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/*
* Copyright (C) 2011, 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WebViewImpl.h"
#include "AutofillPopupMenuClient.h"
#include "CSSValueKeywords.h"
#include "CompositionUnderlineVectorBuilder.h"
#include "ContextFeaturesClientImpl.h"
#include "DatabaseClientImpl.h"
#include "FullscreenController.h"
#include "GeolocationClientProxy.h"
#include "GraphicsLayerFactoryChromium.h"
#include "HTMLNames.h"
#include "LinkHighlight.h"
#include "LocalFileSystemClient.h"
#include "MIDIClientProxy.h"
#include "PinchViewports.h"
#include "PopupContainer.h"
#include "PrerendererClientImpl.h"
#include "RuntimeEnabledFeatures.h"
#include "SharedWorkerRepositoryClientImpl.h"
#include "SpeechInputClientImpl.h"
#include "SpeechRecognitionClientProxy.h"
#include "ValidationMessageClientImpl.h"
#include "ViewportAnchor.h"
#include "WebAXObject.h"
#include "WebActiveWheelFlingParameters.h"
#include "WebAutofillClient.h"
#include "WebDevToolsAgentImpl.h"
#include "WebDevToolsAgentPrivate.h"
#include "WebFrameImpl.h"
#include "WebHelperPluginImpl.h"
#include "WebHitTestResult.h"
#include "WebInputElement.h"
#include "WebInputEventConversion.h"
#include "WebMediaPlayerAction.h"
#include "WebNode.h"
#include "WebPagePopupImpl.h"
#include "WebPlugin.h"
#include "WebPluginAction.h"
#include "WebPluginContainerImpl.h"
#include "WebPopupMenuImpl.h"
#include "WebRange.h"
#include "WebSettingsImpl.h"
#include "WebTextInputInfo.h"
#include "WebViewClient.h"
#include "WebWindowFeatures.h"
#include "WorkerGlobalScopeProxyProviderImpl.h"
#include "core/accessibility/AXObjectCache.h"
#include "core/dom/Document.h"
#include "core/dom/DocumentMarkerController.h"
#include "core/dom/Text.h"
#include "core/dom/WheelController.h"
#include "core/editing/Editor.h"
#include "core/editing/FrameSelection.h"
#include "core/editing/InputMethodController.h"
#include "core/editing/TextIterator.h"
#include "core/events/KeyboardEvent.h"
#include "core/events/WheelEvent.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/HTMLMediaElement.h"
#include "core/html/HTMLPlugInElement.h"
#include "core/html/HTMLTextAreaElement.h"
#include "core/html/HTMLVideoElement.h"
#include "core/html/ime/InputMethodContext.h"
#include "core/inspector/InspectorController.h"
#include "core/loader/DocumentLoader.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/UniqueIdentifier.h"
#include "core/page/Chrome.h"
#include "core/page/ContextMenuController.h"
#include "core/page/DragController.h"
#include "core/page/DragData.h"
#include "core/page/DragSession.h"
#include "core/page/EventHandler.h"
#include "core/page/FocusController.h"
#include "core/frame/Frame.h"
#include "core/page/FrameTree.h"
#include "core/frame/FrameView.h"
#include "core/page/Page.h"
#include "core/page/PageGroup.h"
#include "core/page/PageGroupLoadDeferrer.h"
#include "core/page/PagePopupClient.h"
#include "core/page/PointerLockController.h"
#include "core/frame/Settings.h"
#include "core/frame/SmartClip.h"
#include "core/page/TouchDisambiguation.h"
#include "core/platform/chromium/ChromiumDataObject.h"
#include "core/rendering/RenderLayerCompositor.h"
#include "core/rendering/RenderView.h"
#include "core/rendering/RenderWidget.h"
#include "core/rendering/TextAutosizer.h"
#include "modules/geolocation/GeolocationController.h"
#include "modules/notifications/NotificationController.h"
#include "painting/ContinuousPainter.h"
#include "platform/ContextMenu.h"
#include "platform/ContextMenuItem.h"
#include "platform/Cursor.h"
#include "platform/KeyboardCodes.h"
#include "platform/NotImplemented.h"
#include "platform/OverscrollTheme.h"
#include "platform/PlatformGestureEvent.h"
#include "platform/PlatformKeyboardEvent.h"
#include "platform/PlatformMouseEvent.h"
#include "platform/PlatformWheelEvent.h"
#include "platform/PopupMenuClient.h"
#include "platform/TraceEvent.h"
#include "platform/exported/WebActiveGestureAnimation.h"
#include "platform/fonts/FontCache.h"
#include "platform/graphics/Color.h"
#include "platform/graphics/Image.h"
#include "platform/graphics/ImageBuffer.h"
#include "platform/scroll/ScrollbarTheme.h"
#include "platform/weborigin/SchemeRegistry.h"
#include "public/platform/Platform.h"
#include "public/platform/WebDragData.h"
#include "public/platform/WebFloatPoint.h"
#include "public/platform/WebGestureCurve.h"
#include "public/platform/WebImage.h"
#include "public/platform/WebLayerTreeView.h"
#include "public/platform/WebVector.h"
#include "wtf/CurrentTime.h"
#include "wtf/RefPtr.h"
#include "wtf/TemporaryChange.h"
#if USE(DEFAULT_RENDER_THEME)
#include "core/rendering/RenderThemeChromiumDefault.h"
#endif
#if OS(WIN)
#if !USE(DEFAULT_RENDER_THEME)
#include "core/rendering/RenderThemeChromiumWin.h"
#endif
#else
#include "core/rendering/RenderTheme.h"
#endif
// Get rid of WTF's pow define so we can use std::pow.
#undef pow
#include <cmath> // for std::pow
using namespace WebCore;
using namespace std;
// The following constants control parameters for automated scaling of webpages
// (such as due to a double tap gesture or find in page etc.). These are
// experimentally determined.
static const int touchPointPadding = 32;
static const int nonUserInitiatedPointPadding = 11;
static const float minScaleDifference = 0.01f;
static const float doubleTapZoomContentDefaultMargin = 5;
static const float doubleTapZoomContentMinimumMargin = 2;
static const double doubleTapZoomAnimationDurationInSeconds = 0.25;
static const float doubleTapZoomAlreadyLegibleRatio = 1.2f;
static const double multipleTargetsZoomAnimationDurationInSeconds = 0.25;
static const double findInPageAnimationDurationInSeconds = 0;
// Constants for viewport anchoring on resize.
static const float viewportAnchorXCoord = 0.5f;
static const float viewportAnchorYCoord = 0;
// Constants for zooming in on a focused text field.
static const double scrollAndScaleAnimationDurationInSeconds = 0.2;
static const int minReadableCaretHeight = 18;
static const float minScaleChangeToTriggerZoom = 1.05f;
static const float leftBoxRatio = 0.3f;
static const int caretPadding = 10;
namespace blink {
// Change the text zoom level by kTextSizeMultiplierRatio each time the user
// zooms text in or out (ie., change by 20%). The min and max values limit
// text zoom to half and 3x the original text size. These three values match
// those in Apple's port in WebKit/WebKit/WebView/WebView.mm
const double WebView::textSizeMultiplierRatio = 1.2;
const double WebView::minTextSizeMultiplier = 0.5;
const double WebView::maxTextSizeMultiplier = 3.0;
// Used to defer all page activity in cases where the embedder wishes to run
// a nested event loop. Using a stack enables nesting of message loop invocations.
static Vector<PageGroupLoadDeferrer*>& pageGroupLoadDeferrerStack()
{
DEFINE_STATIC_LOCAL(Vector<PageGroupLoadDeferrer*>, deferrerStack, ());
return deferrerStack;
}
// Ensure that the WebDragOperation enum values stay in sync with the original
// DragOperation constants.
#define COMPILE_ASSERT_MATCHING_ENUM(coreName) \
COMPILE_ASSERT(int(coreName) == int(Web##coreName), dummy##coreName)
COMPILE_ASSERT_MATCHING_ENUM(DragOperationNone);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationCopy);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationLink);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationGeneric);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationPrivate);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationMove);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationDelete);
COMPILE_ASSERT_MATCHING_ENUM(DragOperationEvery);
static const PopupContainerSettings autofillPopupSettings = {
false, // setTextOnIndexChange
false, // acceptOnAbandon
true, // loopSelectionNavigation
false // restrictWidthOfListBox (For security reasons show the entire entry
// so the user doesn't enter information he did not intend to.)
};
static bool shouldUseExternalPopupMenus = false;
static int webInputEventKeyStateToPlatformEventKeyState(int webInputEventKeyState)
{
int platformEventKeyState = 0;
if (webInputEventKeyState & WebInputEvent::ShiftKey)
platformEventKeyState = platformEventKeyState | WebCore::PlatformEvent::ShiftKey;
if (webInputEventKeyState & WebInputEvent::ControlKey)
platformEventKeyState = platformEventKeyState | WebCore::PlatformEvent::CtrlKey;
if (webInputEventKeyState & WebInputEvent::AltKey)
platformEventKeyState = platformEventKeyState | WebCore::PlatformEvent::AltKey;
if (webInputEventKeyState & WebInputEvent::MetaKey)
platformEventKeyState = platformEventKeyState | WebCore::PlatformEvent::MetaKey;
return platformEventKeyState;
}
// WebView ----------------------------------------------------------------
WebView* WebView::create(WebViewClient* client)
{
// Pass the WebViewImpl's self-reference to the caller.
return WebViewImpl::create(client);
}
WebViewImpl* WebViewImpl::create(WebViewClient* client)
{
// Pass the WebViewImpl's self-reference to the caller.
return adoptRef(new WebViewImpl(client)).leakRef();
}
void WebView::setUseExternalPopupMenus(bool useExternalPopupMenus)
{
shouldUseExternalPopupMenus = useExternalPopupMenus;
}
void WebView::updateVisitedLinkState(unsigned long long linkHash)
{
Page::visitedStateChanged(PageGroup::sharedGroup(), linkHash);
}
void WebView::resetVisitedLinkState()
{
Page::allVisitedStateChanged(PageGroup::sharedGroup());
}
void WebView::willEnterModalLoop()
{
PageGroup* pageGroup = PageGroup::sharedGroup();
if (pageGroup->pages().isEmpty())
pageGroupLoadDeferrerStack().append(static_cast<PageGroupLoadDeferrer*>(0));
else {
// Pick any page in the page group since we are deferring all pages.
pageGroupLoadDeferrerStack().append(new PageGroupLoadDeferrer(*pageGroup->pages().begin(), true));
}
}
void WebView::didExitModalLoop()
{
ASSERT(pageGroupLoadDeferrerStack().size());
delete pageGroupLoadDeferrerStack().last();
pageGroupLoadDeferrerStack().removeLast();
}
void WebViewImpl::setMainFrame(WebFrame* frame)
{
// NOTE: The WebFrameImpl takes a reference to itself within
// initializeAsMainFrame() and releases that reference once the
// corresponding Frame is destroyed.
toWebFrameImpl(frame)->initializeAsMainFrame(page());
}
void WebViewImpl::initializeMainFrame(WebFrameClient* frameClient)
{
// NOTE: Previously, WebViewImpl was responsible for allocating its own
// mainframe. This code is for supporting clients that have yet to move
// to setMainFrame(). Though the setMainFrame() accepts a raw pointer, it
// implicitly takes a refcount on the frame. Dropping our RefPtr here
// will effectively pass ownership to m_page. New users of WebViewImpl
// should call WebFrameImpl::create() to construct their own mainframe,
// pass it into WebViewImpl::setMainFrame(), keep a pointer to the
// mainframe, and call WebFrameImpl::close() on it when closing the
// WebViewImpl.
RefPtr<WebFrameImpl> frame = adoptRef(WebFrameImpl::create(frameClient));
setMainFrame(frame.get());
}
void WebViewImpl::setAutofillClient(WebAutofillClient* autofillClient)
{
m_autofillClient = autofillClient;
}
void WebViewImpl::setDevToolsAgentClient(WebDevToolsAgentClient* devToolsClient)
{
if (devToolsClient)
m_devToolsAgent = adoptPtr(new WebDevToolsAgentImpl(this, devToolsClient));
else
m_devToolsAgent.clear();
}
void WebViewImpl::setValidationMessageClient(WebValidationMessageClient* client)
{
ASSERT(client);
m_validationMessage = ValidationMessageClientImpl::create(*this, client);
m_page->setValidationMessageClient(m_validationMessage.get());
}
void WebViewImpl::setPermissionClient(WebPermissionClient* permissionClient)
{
m_permissionClient = permissionClient;
m_featureSwitchClient->setPermissionClient(permissionClient);
}
void WebViewImpl::setPrerendererClient(WebPrerendererClient* prerendererClient)
{
providePrerendererClientTo(m_page.get(), new PrerendererClientImpl(prerendererClient));
}
void WebViewImpl::setSpellCheckClient(WebSpellCheckClient* spellCheckClient)
{
m_spellCheckClient = spellCheckClient;
}
void WebViewImpl::setPasswordGeneratorClient(WebPasswordGeneratorClient* client)
{
m_passwordGeneratorClient = client;
}
void WebViewImpl::setSharedWorkerRepositoryClient(WebSharedWorkerRepositoryClient* client)
{
m_sharedWorkerRepositoryClient = SharedWorkerRepositoryClientImpl::create(client);
m_page->setSharedWorkerRepositoryClient(m_sharedWorkerRepositoryClient.get());
}
WebViewImpl::WebViewImpl(WebViewClient* client)
: m_client(client)
, m_autofillClient(0)
, m_permissionClient(0)
, m_spellCheckClient(0)
, m_passwordGeneratorClient(0)
, m_chromeClientImpl(this)
, m_contextMenuClientImpl(this)
, m_dragClientImpl(this)
, m_editorClientImpl(this)
, m_inspectorClientImpl(this)
, m_backForwardClientImpl(this)
, m_spellCheckerClientImpl(this)
, m_fixedLayoutSizeLock(false)
, m_shouldAutoResize(false)
, m_zoomLevel(0)
, m_minimumZoomLevel(zoomFactorToZoomLevel(minTextSizeMultiplier))
, m_maximumZoomLevel(zoomFactorToZoomLevel(maxTextSizeMultiplier))
, m_savedPageScaleFactor(0)
, m_doubleTapZoomPageScaleFactor(0)
, m_doubleTapZoomPending(false)
, m_enableFakePageScaleAnimationForTesting(false)
, m_fakePageScaleAnimationPageScaleFactor(0)
, m_fakePageScaleAnimationUseAnchor(false)
, m_contextMenuAllowed(false)
, m_doingDragAndDrop(false)
, m_ignoreInputEvents(false)
, m_compositorDeviceScaleFactorOverride(0)
, m_rootLayerScale(1)
, m_suppressNextKeypressEvent(false)
, m_imeAcceptEvents(true)
, m_operationsAllowed(WebDragOperationNone)
, m_dragOperation(WebDragOperationNone)
, m_featureSwitchClient(adoptPtr(new ContextFeaturesClientImpl()))
, m_autofillPopupShowing(false)
, m_autofillPopup(0)
, m_isTransparent(false)
, m_tabsToLinks(false)
, m_layerTreeView(0)
, m_rootLayer(0)
, m_rootGraphicsLayer(0)
, m_graphicsLayerFactory(adoptPtr(new GraphicsLayerFactoryChromium(this)))
, m_isAcceleratedCompositingActive(false)
, m_layerTreeViewCommitsDeferred(false)
, m_compositorCreationFailed(false)
, m_recreatingGraphicsContext(false)
#if ENABLE(INPUT_SPEECH)
, m_speechInputClient(SpeechInputClientImpl::create(client))
#endif
, m_speechRecognitionClient(SpeechRecognitionClientProxy::create(client ? client->speechRecognizer() : 0))
, m_geolocationClientProxy(adoptPtr(new GeolocationClientProxy(client ? client->geolocationClient() : 0)))
, m_userMediaClientImpl(this)
, m_midiClientProxy(adoptPtr(new MIDIClientProxy(client ? client->webMIDIClient() : 0)))
#if ENABLE(NAVIGATOR_CONTENT_UTILS)
, m_navigatorContentUtilsClient(NavigatorContentUtilsClientImpl::create(this))
#endif
, m_flingModifier(0)
, m_flingSourceDevice(false)
, m_fullscreenController(FullscreenController::create(this))
, m_showFPSCounter(false)
, m_showPaintRects(false)
, m_showDebugBorders(false)
, m_continuousPaintingEnabled(false)
, m_showScrollBottleneckRects(false)
, m_baseBackgroundColor(Color::white)
, m_backgroundColorOverride(Color::transparent)
, m_zoomFactorOverride(0)
, m_helperPluginCloseTimer(this, &WebViewImpl::closePendingHelperPlugins)
{
Page::PageClients pageClients;
pageClients.chromeClient = &m_chromeClientImpl;
pageClients.contextMenuClient = &m_contextMenuClientImpl;
pageClients.editorClient = &m_editorClientImpl;
pageClients.dragClient = &m_dragClientImpl;
pageClients.inspectorClient = &m_inspectorClientImpl;
pageClients.backForwardClient = &m_backForwardClientImpl;
pageClients.spellCheckerClient = &m_spellCheckerClientImpl;
m_page = adoptPtr(new Page(pageClients));
provideUserMediaTo(m_page.get(), &m_userMediaClientImpl);
provideMIDITo(m_page.get(), m_midiClientProxy.get());
#if ENABLE(INPUT_SPEECH)
provideSpeechInputTo(m_page.get(), m_speechInputClient.get());
#endif
provideSpeechRecognitionTo(m_page.get(), m_speechRecognitionClient.get());
provideNotification(m_page.get(), notificationPresenterImpl());
#if ENABLE(NAVIGATOR_CONTENT_UTILS)
provideNavigatorContentUtilsTo(m_page.get(), m_navigatorContentUtilsClient.get());
#endif
provideContextFeaturesTo(m_page.get(), m_featureSwitchClient.get());
provideGeolocationTo(m_page.get(), m_geolocationClientProxy.get());
m_geolocationClientProxy->setController(GeolocationController::from(m_page.get()));
provideLocalFileSystemTo(m_page.get(), LocalFileSystemClient::create());
provideDatabaseClientTo(m_page.get(), DatabaseClientImpl::create());
m_validationMessage = ValidationMessageClientImpl::create(*this, 0);
m_page->setValidationMessageClient(m_validationMessage.get());
provideWorkerGlobalScopeProxyProviderTo(m_page.get(), WorkerGlobalScopeProxyProviderImpl::create());
m_page->setGroupType(Page::SharedPageGroup);
if (m_client) {
setDeviceScaleFactor(m_client->screenInfo().deviceScaleFactor);
setVisibilityState(m_client->visibilityState(), true);
}
m_inspectorSettingsMap = adoptPtr(new SettingsMap);
}
WebViewImpl::~WebViewImpl()
{
ASSERT(!m_page);
ASSERT(!m_helperPluginCloseTimer.isActive());
ASSERT(m_helperPluginsPendingClose.isEmpty());
}
WebFrameImpl* WebViewImpl::mainFrameImpl()
{
return m_page ? WebFrameImpl::fromFrame(m_page->mainFrame()) : 0;
}
bool WebViewImpl::tabKeyCyclesThroughElements() const
{
ASSERT(m_page);
return m_page->tabKeyCyclesThroughElements();
}
void WebViewImpl::setTabKeyCyclesThroughElements(bool value)
{
if (m_page)
m_page->setTabKeyCyclesThroughElements(value);
}
void WebViewImpl::handleMouseLeave(Frame& mainFrame, const WebMouseEvent& event)
{
m_client->setMouseOverURL(WebURL());
PageWidgetEventHandler::handleMouseLeave(mainFrame, event);
}
void WebViewImpl::handleMouseDown(Frame& mainFrame, const WebMouseEvent& event)
{
// If there is a popup open, close it as the user is clicking on the page (outside of the
// popup). We also save it so we can prevent a click on an element from immediately
// reopening the same popup.
RefPtr<WebCore::PopupContainer> selectPopup;
RefPtr<WebPagePopupImpl> pagePopup;
if (event.button == WebMouseEvent::ButtonLeft) {
selectPopup = m_selectPopup;
pagePopup = m_pagePopup;
hidePopups();
ASSERT(!m_selectPopup);
ASSERT(!m_pagePopup);
}
m_lastMouseDownPoint = WebPoint(event.x, event.y);
if (event.button == WebMouseEvent::ButtonLeft) {
IntPoint point(event.x, event.y);
point = m_page->mainFrame()->view()->windowToContents(point);
HitTestResult result(m_page->mainFrame()->eventHandler().hitTestResultAtPoint(point));
Node* hitNode = result.innerNonSharedNode();
// Take capture on a mouse down on a plugin so we can send it mouse events.
if (hitNode && hitNode->renderer() && hitNode->renderer()->isEmbeddedObject()) {
m_mouseCaptureNode = hitNode;
TRACE_EVENT_ASYNC_BEGIN0("input", "capturing mouse", this);
}
}
PageWidgetEventHandler::handleMouseDown(mainFrame, event);
if (m_selectPopup && m_selectPopup == selectPopup) {
// That click triggered a select popup which is the same as the one that
// was showing before the click. It means the user clicked the select
// while the popup was showing, and as a result we first closed then
// immediately reopened the select popup. It needs to be closed.
hideSelectPopup();
}
if (m_pagePopup && pagePopup && m_pagePopup->hasSamePopupClient(pagePopup.get())) {
// That click triggered a page popup that is the same as the one we just closed.
// It needs to be closed.
closePagePopup(m_pagePopup.get());
}
// Dispatch the contextmenu event regardless of if the click was swallowed.
#if OS(WIN)
// On Windows, we handle it on mouse up, not down.
#elif OS(MACOSX)
if (event.button == WebMouseEvent::ButtonRight
|| (event.button == WebMouseEvent::ButtonLeft
&& event.modifiers & WebMouseEvent::ControlKey))
mouseContextMenu(event);
#else
if (event.button == WebMouseEvent::ButtonRight)
mouseContextMenu(event);
#endif
}
void WebViewImpl::mouseContextMenu(const WebMouseEvent& event)
{
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
return;
m_page->contextMenuController().clearContextMenu();
PlatformMouseEventBuilder pme(mainFrameImpl()->frameView(), event);
// Find the right target frame. See issue 1186900.
HitTestResult result = hitTestResultForWindowPos(pme.position());
Frame* targetFrame;
if (result.innerNonSharedNode())
targetFrame = result.innerNonSharedNode()->document().frame();
else
targetFrame = m_page->focusController().focusedOrMainFrame();
#if OS(WIN)
targetFrame->view()->setCursor(pointerCursor());
#endif
m_contextMenuAllowed = true;
targetFrame->eventHandler().sendContextMenuEvent(pme);
m_contextMenuAllowed = false;
// Actually showing the context menu is handled by the ContextMenuClient
// implementation...
}
void WebViewImpl::handleMouseUp(Frame& mainFrame, const WebMouseEvent& event)
{
PageWidgetEventHandler::handleMouseUp(mainFrame, event);
#if OS(WIN)
// Dispatch the contextmenu event regardless of if the click was swallowed.
// On Mac/Linux, we handle it on mouse down, not up.
if (event.button == WebMouseEvent::ButtonRight)
mouseContextMenu(event);
#endif
}
bool WebViewImpl::handleMouseWheel(Frame& mainFrame, const WebMouseWheelEvent& event)
{
hidePopups();
return PageWidgetEventHandler::handleMouseWheel(mainFrame, event);
}
void WebViewImpl::scrollBy(const WebFloatSize& delta)
{
if (m_flingSourceDevice == WebGestureEvent::Touchpad) {
WebMouseWheelEvent syntheticWheel;
const float tickDivisor = WebCore::WheelEvent::TickMultiplier;
syntheticWheel.deltaX = delta.width;
syntheticWheel.deltaY = delta.height;
syntheticWheel.wheelTicksX = delta.width / tickDivisor;
syntheticWheel.wheelTicksY = delta.height / tickDivisor;
syntheticWheel.hasPreciseScrollingDeltas = true;
syntheticWheel.x = m_positionOnFlingStart.x;
syntheticWheel.y = m_positionOnFlingStart.y;
syntheticWheel.globalX = m_globalPositionOnFlingStart.x;
syntheticWheel.globalY = m_globalPositionOnFlingStart.y;
syntheticWheel.modifiers = m_flingModifier;
if (m_page && m_page->mainFrame() && m_page->mainFrame()->view())
handleMouseWheel(*m_page->mainFrame(), syntheticWheel);
} else {
WebGestureEvent syntheticGestureEvent;
syntheticGestureEvent.type = WebInputEvent::GestureScrollUpdateWithoutPropagation;
syntheticGestureEvent.data.scrollUpdate.deltaX = delta.width;
syntheticGestureEvent.data.scrollUpdate.deltaY = delta.height;
syntheticGestureEvent.x = m_positionOnFlingStart.x;
syntheticGestureEvent.y = m_positionOnFlingStart.y;
syntheticGestureEvent.globalX = m_globalPositionOnFlingStart.x;
syntheticGestureEvent.globalY = m_globalPositionOnFlingStart.y;
syntheticGestureEvent.modifiers = m_flingModifier;
syntheticGestureEvent.sourceDevice = WebGestureEvent::Touchscreen;
if (m_page && m_page->mainFrame() && m_page->mainFrame()->view())
handleGestureEvent(syntheticGestureEvent);
}
}
bool WebViewImpl::handleGestureEvent(const WebGestureEvent& event)
{
bool eventSwallowed = false;
bool eventCancelled = false; // for disambiguation
// Special handling for slow-path fling gestures.
switch (event.type) {
case WebInputEvent::GestureFlingStart: {
if (mainFrameImpl()->frame()->eventHandler().isScrollbarHandlingGestures())
break;
m_client->cancelScheduledContentIntents();
m_positionOnFlingStart = WebPoint(event.x / pageScaleFactor(), event.y / pageScaleFactor());
m_globalPositionOnFlingStart = WebPoint(event.globalX, event.globalY);
m_flingModifier = event.modifiers;
m_flingSourceDevice = event.sourceDevice;
OwnPtr<WebGestureCurve> flingCurve = adoptPtr(Platform::current()->createFlingAnimationCurve(event.sourceDevice, WebFloatPoint(event.data.flingStart.velocityX, event.data.flingStart.velocityY), WebSize()));
m_gestureAnimation = WebActiveGestureAnimation::createAtAnimationStart(flingCurve.release(), this);
scheduleAnimation();
eventSwallowed = true;
m_client->didHandleGestureEvent(event, eventCancelled);
return eventSwallowed;
}
case WebInputEvent::GestureFlingCancel:
if (endActiveFlingAnimation())
eventSwallowed = true;
m_client->didHandleGestureEvent(event, eventCancelled);
return eventSwallowed;
default:
break;
}
PlatformGestureEventBuilder platformEvent(mainFrameImpl()->frameView(), event);
// Handle link highlighting outside the main switch to avoid getting lost in the
// complicated set of cases handled below.
switch (event.type) {
case WebInputEvent::GestureShowPress:
// Queue a highlight animation, then hand off to regular handler.
if (settingsImpl()->gestureTapHighlightEnabled())
enableTapHighlightAtPoint(platformEvent);
break;
case WebInputEvent::GestureTapCancel:
case WebInputEvent::GestureTap:
case WebInputEvent::GestureLongPress:
for (size_t i = 0; i < m_linkHighlights.size(); ++i)
m_linkHighlights[i]->startHighlightAnimationIfNeeded();
break;
default:
break;
}
switch (event.type) {
case WebInputEvent::GestureTap: {
m_client->cancelScheduledContentIntents();
if (detectContentOnTouch(platformEvent.position())) {
eventSwallowed = true;
break;
}
RefPtr<WebCore::PopupContainer> selectPopup;
selectPopup = m_selectPopup;
hideSelectPopup();
ASSERT(!m_selectPopup);
// Don't trigger a disambiguation popup on sites designed for mobile devices.
// Instead, assume that the page has been designed with big enough buttons and links.
if (event.data.tap.width > 0 && !shouldDisableDesktopWorkarounds()) {
// FIXME: didTapMultipleTargets should just take a rect instead of
// an event.
WebGestureEvent scaledEvent = event;
scaledEvent.x = event.x / pageScaleFactor();
scaledEvent.y = event.y / pageScaleFactor();
scaledEvent.data.tap.width = event.data.tap.width / pageScaleFactor();
scaledEvent.data.tap.height = event.data.tap.height / pageScaleFactor();
IntRect boundingBox(scaledEvent.x - scaledEvent.data.tap.width / 2, scaledEvent.y - scaledEvent.data.tap.height / 2, scaledEvent.data.tap.width, scaledEvent.data.tap.height);
Vector<IntRect> goodTargets;
Vector<Node*> highlightNodes;
findGoodTouchTargets(boundingBox, mainFrameImpl()->frame(), goodTargets, highlightNodes);
// FIXME: replace touch adjustment code when numberOfGoodTargets == 1?
// Single candidate case is currently handled by: https://bugs.webkit.org/show_bug.cgi?id=85101
if (goodTargets.size() >= 2 && m_client && m_client->didTapMultipleTargets(scaledEvent, goodTargets)) {
if (settingsImpl()->gestureTapHighlightEnabled())
enableTapHighlights(highlightNodes);
for (size_t i = 0; i < m_linkHighlights.size(); ++i)
m_linkHighlights[i]->startHighlightAnimationIfNeeded();
eventSwallowed = true;
eventCancelled = true;
break;
}
}
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent);
if (m_selectPopup && m_selectPopup == selectPopup) {
// That tap triggered a select popup which is the same as the one that
// was showing before the tap. It means the user tapped the select
// while the popup was showing, and as a result we first closed then
// immediately reopened the select popup. It needs to be closed.
hideSelectPopup();
}
break;
}
case WebInputEvent::GestureTwoFingerTap:
case WebInputEvent::GestureLongPress:
case WebInputEvent::GestureLongTap: {
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
break;
m_client->cancelScheduledContentIntents();
m_page->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent);
m_contextMenuAllowed = false;
break;
}
case WebInputEvent::GestureShowPress: {
m_client->cancelScheduledContentIntents();
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent);
break;
}
case WebInputEvent::GestureDoubleTap:
if (m_webSettings->doubleTapToZoomEnabled() && minimumPageScaleFactor() != maximumPageScaleFactor()) {
m_client->cancelScheduledContentIntents();
animateDoubleTapZoom(platformEvent.position());
}
// GestureDoubleTap is currently only used by Android for zooming. For WebCore,
// GestureTap with tap count = 2 is used instead. So we drop GestureDoubleTap here.
eventSwallowed = true;
break;
case WebInputEvent::GestureScrollBegin:
case WebInputEvent::GesturePinchBegin:
m_client->cancelScheduledContentIntents();
case WebInputEvent::GestureTapDown:
case WebInputEvent::GestureScrollEnd:
case WebInputEvent::GestureScrollUpdate:
case WebInputEvent::GestureScrollUpdateWithoutPropagation:
case WebInputEvent::GestureTapCancel:
case WebInputEvent::GestureTapUnconfirmed:
case WebInputEvent::GesturePinchEnd:
case WebInputEvent::GesturePinchUpdate:
case WebInputEvent::GestureFlingStart: {
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(platformEvent);
break;
}
default:
ASSERT_NOT_REACHED();
}
m_client->didHandleGestureEvent(event, eventCancelled);
return eventSwallowed;
}
void WebViewImpl::transferActiveWheelFlingAnimation(const WebActiveWheelFlingParameters& parameters)
{
TRACE_EVENT0("webkit", "WebViewImpl::transferActiveWheelFlingAnimation");
ASSERT(!m_gestureAnimation);
m_positionOnFlingStart = parameters.point;
m_globalPositionOnFlingStart = parameters.globalPoint;
m_flingModifier = parameters.modifiers;
OwnPtr<WebGestureCurve> curve = adoptPtr(Platform::current()->createFlingAnimationCurve(parameters.sourceDevice, WebFloatPoint(parameters.delta), parameters.cumulativeScroll));
m_gestureAnimation = WebActiveGestureAnimation::createWithTimeOffset(curve.release(), this, parameters.startTime);
scheduleAnimation();
}
bool WebViewImpl::endActiveFlingAnimation()
{
if (m_gestureAnimation) {
m_gestureAnimation.clear();
if (m_layerTreeView)
m_layerTreeView->didStopFlinging();
return true;
}
return false;
}
bool WebViewImpl::startPageScaleAnimation(const IntPoint& targetPosition, bool useAnchor, float newScale, double durationInSeconds)
{
WebPoint clampedPoint = targetPosition;
if (!useAnchor) {
clampedPoint = clampOffsetAtScale(targetPosition, newScale);
if (!durationInSeconds) {
setPageScaleFactor(newScale, clampedPoint);
return false;
}
}
if (useAnchor && newScale == pageScaleFactor())
return false;
if (m_enableFakePageScaleAnimationForTesting) {
m_fakePageScaleAnimationTargetPosition = targetPosition;
m_fakePageScaleAnimationUseAnchor = useAnchor;
m_fakePageScaleAnimationPageScaleFactor = newScale;
} else {
if (!m_layerTreeView)
return false;
m_layerTreeView->startPageScaleAnimation(targetPosition, useAnchor, newScale, durationInSeconds);
}
return true;
}
void WebViewImpl::enableFakePageScaleAnimationForTesting(bool enable)
{
m_enableFakePageScaleAnimationForTesting = enable;
}
void WebViewImpl::setShowFPSCounter(bool show)
{
if (m_layerTreeView) {
TRACE_EVENT0("webkit", "WebViewImpl::setShowFPSCounter");
m_layerTreeView->setShowFPSCounter(show);
}
m_showFPSCounter = show;
}
void WebViewImpl::setShowPaintRects(bool show)
{
if (m_layerTreeView) {
TRACE_EVENT0("webkit", "WebViewImpl::setShowPaintRects");
m_layerTreeView->setShowPaintRects(show);
}
m_showPaintRects = show;
}
void WebViewImpl::setShowDebugBorders(bool show)
{
if (m_layerTreeView)
m_layerTreeView->setShowDebugBorders(show);
m_showDebugBorders = show;
}
void WebViewImpl::setContinuousPaintingEnabled(bool enabled)
{
if (m_layerTreeView) {
TRACE_EVENT0("webkit", "WebViewImpl::setContinuousPaintingEnabled");
m_layerTreeView->setContinuousPaintingEnabled(enabled);
}
m_continuousPaintingEnabled = enabled;
m_client->scheduleAnimation();
}
void WebViewImpl::setShowScrollBottleneckRects(bool show)
{
if (m_layerTreeView)
m_layerTreeView->setShowScrollBottleneckRects(show);
m_showScrollBottleneckRects = show;
}
bool WebViewImpl::handleKeyEvent(const WebKeyboardEvent& event)
{
ASSERT((event.type == WebInputEvent::RawKeyDown)
|| (event.type == WebInputEvent::KeyDown)
|| (event.type == WebInputEvent::KeyUp));
// Halt an in-progress fling on a key event.
endActiveFlingAnimation();
// Please refer to the comments explaining the m_suppressNextKeypressEvent
// member.
// The m_suppressNextKeypressEvent is set if the KeyDown is handled by
// Webkit. A keyDown event is typically associated with a keyPress(char)
// event and a keyUp event. We reset this flag here as this is a new keyDown
// event.
m_suppressNextKeypressEvent = false;
// If there is a select popup, it should be the one processing the event,
// not the page.
if (m_selectPopup)
return m_selectPopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
if (m_pagePopup) {
m_pagePopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
// We need to ignore the next Char event after this otherwise pressing
// enter when selecting an item in the popup will go to the page.
if (WebInputEvent::RawKeyDown == event.type)
m_suppressNextKeypressEvent = true;
return true;
}
// Give Autocomplete a chance to consume the key events it is interested in.
if (autocompleteHandleKeyEvent(event))
return true;
RefPtr<Frame> frame = focusedWebCoreFrame();
if (!frame)
return false;
#if !OS(MACOSX)
const WebInputEvent::Type contextMenuTriggeringEventType =
#if OS(WIN)
WebInputEvent::KeyUp;
#else
WebInputEvent::RawKeyDown;
#endif
bool isUnmodifiedMenuKey = !(event.modifiers & WebInputEvent::InputModifiers) && event.windowsKeyCode == VKEY_APPS;
bool isShiftF10 = event.modifiers == WebInputEvent::ShiftKey && event.windowsKeyCode == VKEY_F10;
if ((isUnmodifiedMenuKey || isShiftF10) && event.type == contextMenuTriggeringEventType) {
sendContextMenuEvent(event);
return true;
}
#endif // !OS(MACOSX)
PlatformKeyboardEventBuilder evt(event);
if (frame->eventHandler().keyEvent(evt)) {
if (WebInputEvent::RawKeyDown == event.type) {
// Suppress the next keypress event unless the focused node is a plug-in node.
// (Flash needs these keypress events to handle non-US keyboards.)
Element* element = focusedElement();
if (!element || !element->renderer() || !element->renderer()->isEmbeddedObject())
m_suppressNextKeypressEvent = true;
}
return true;
}
return keyEventDefault(event);
}
bool WebViewImpl::autocompleteHandleKeyEvent(const WebKeyboardEvent& event)
{
if (!m_autofillPopupShowing
// Home and End should be left to the text field to process.
|| event.windowsKeyCode == VKEY_HOME
|| event.windowsKeyCode == VKEY_END)
return false;
// Pressing delete triggers the removal of the selected suggestion from the DB.
if (event.windowsKeyCode == VKEY_DELETE
&& m_autofillPopup->selectedIndex() != -1) {
Element* element = focusedElement();
if (!element) {
ASSERT_NOT_REACHED();
return false;
}
if (!element->hasTagName(HTMLNames::inputTag)) {
ASSERT_NOT_REACHED();
return false;
}
int selectedIndex = m_autofillPopup->selectedIndex();
if (!m_autofillPopupClient->canRemoveSuggestionAtIndex(selectedIndex))
return false;
WebString name = WebInputElement(toHTMLInputElement(element)).nameForAutofill();
WebString value = m_autofillPopupClient->itemText(selectedIndex);
m_autofillClient->removeAutocompleteSuggestion(name, value);
// Update the entries in the currently showing popup to reflect the
// deletion.
m_autofillPopupClient->removeSuggestionAtIndex(selectedIndex);
refreshAutofillPopup();
return false;
}
if (!m_autofillPopup->isInterestedInEventForKey(event.windowsKeyCode))
return false;
if (m_autofillPopup->handleKeyEvent(PlatformKeyboardEventBuilder(event))) {
// We need to ignore the next Char event after this otherwise pressing
// enter when selecting an item in the menu will go to the page.
if (WebInputEvent::RawKeyDown == event.type)
m_suppressNextKeypressEvent = true;
return true;
}
return false;
}
bool WebViewImpl::handleCharEvent(const WebKeyboardEvent& event)
{
ASSERT(event.type == WebInputEvent::Char);
// Please refer to the comments explaining the m_suppressNextKeypressEvent
// member. The m_suppressNextKeypressEvent is set if the KeyDown is
// handled by Webkit. A keyDown event is typically associated with a
// keyPress(char) event and a keyUp event. We reset this flag here as it
// only applies to the current keyPress event.
bool suppress = m_suppressNextKeypressEvent;
m_suppressNextKeypressEvent = false;
// If there is a select popup, it should be the one processing the event,
// not the page.
if (m_selectPopup)
return m_selectPopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
if (m_pagePopup)
return m_pagePopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
Frame* frame = focusedWebCoreFrame();
if (!frame)
return suppress;
EventHandler& handler = frame->eventHandler();
PlatformKeyboardEventBuilder evt(event);
if (!evt.isCharacterKey())
return true;
// Accesskeys are triggered by char events and can't be suppressed.
if (handler.handleAccessKey(evt))
return true;
// Safari 3.1 does not pass off windows system key messages (WM_SYSCHAR) to
// the eventHandler::keyEvent. We mimic this behavior on all platforms since
// for now we are converting other platform's key events to windows key
// events.
if (evt.isSystemKey())
return false;
if (!suppress && !handler.keyEvent(evt))
return keyEventDefault(event);
return true;
}
WebRect WebViewImpl::computeBlockBounds(const WebRect& rect, bool ignoreClipping)
{
if (!mainFrameImpl())
return WebRect();
// Use the rect-based hit test to find the node.
IntPoint point = mainFrameImpl()->frameView()->windowToContents(IntPoint(rect.x, rect.y));
HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ConfusingAndOftenMisusedDisallowShadowContent | (ignoreClipping ? HitTestRequest::IgnoreClipping : 0);
HitTestResult result = mainFrameImpl()->frame()->eventHandler().hitTestResultAtPoint(point, hitType, IntSize(rect.width, rect.height));
Node* node = result.innerNonSharedNode();
if (!node)
return WebRect();
// Find the block type node based on the hit node.
while (node && (!node->renderer() || node->renderer()->isInline()))
node = node->parentNode();
// Return the bounding box in the window coordinate system.
if (node) {
IntRect rect = node->Node::pixelSnappedBoundingBox();
Frame* frame = node->document().frame();
return frame->view()->contentsToWindow(rect);
}
return WebRect();
}
WebRect WebViewImpl::widenRectWithinPageBounds(const WebRect& source, int targetMargin, int minimumMargin)
{
WebSize maxSize;
if (mainFrame())
maxSize = mainFrame()->contentsSize();
IntSize scrollOffset;
if (mainFrame())
scrollOffset = mainFrame()->scrollOffset();
int leftMargin = targetMargin;
int rightMargin = targetMargin;
const int absoluteSourceX = source.x + scrollOffset.width();
if (leftMargin > absoluteSourceX) {
leftMargin = absoluteSourceX;
rightMargin = max(leftMargin, minimumMargin);
}
const int maximumRightMargin = maxSize.width - (source.width + absoluteSourceX);
if (rightMargin > maximumRightMargin) {
rightMargin = maximumRightMargin;
leftMargin = min(leftMargin, max(rightMargin, minimumMargin));
}
const int newWidth = source.width + leftMargin + rightMargin;
const int newX = source.x - leftMargin;
ASSERT(newWidth >= 0);
ASSERT(scrollOffset.width() + newX + newWidth <= maxSize.width);
return WebRect(newX, source.y, newWidth, source.height);
}
float WebViewImpl::legibleScale() const
{
// Pages should be as legible as on desktop when at dpi scale, so no
// need to zoom in further when automatically determining zoom level
// (after double tap, find in page, etc), though the user should still
// be allowed to manually pinch zoom in further if they desire.
float legibleScale = 1;
if (page())
legibleScale *= page()->settings().accessibilityFontScaleFactor();
return legibleScale;
}
void WebViewImpl::computeScaleAndScrollForBlockRect(const WebPoint& hitPoint, const WebRect& blockRect, float padding, float defaultScaleWhenAlreadyLegible, float& scale, WebPoint& scroll)
{
scale = pageScaleFactor();
scroll.x = scroll.y = 0;
WebRect rect = blockRect;
if (!rect.isEmpty()) {
float defaultMargin = doubleTapZoomContentDefaultMargin;
float minimumMargin = doubleTapZoomContentMinimumMargin;
// We want the margins to have the same physical size, which means we
// need to express them in post-scale size. To do that we'd need to know
// the scale we're scaling to, but that depends on the margins. Instead
// we express them as a fraction of the target rectangle: this will be
// correct if we end up fully zooming to it, and won't matter if we
// don't.
rect = widenRectWithinPageBounds(rect,
static_cast<int>(defaultMargin * rect.width / m_size.width),
static_cast<int>(minimumMargin * rect.width / m_size.width));
// Fit block to screen, respecting limits.
scale = static_cast<float>(m_size.width) / rect.width;
scale = min(scale, legibleScale());
if (pageScaleFactor() < defaultScaleWhenAlreadyLegible)
scale = max(scale, defaultScaleWhenAlreadyLegible);
scale = clampPageScaleFactorToLimits(scale);
}
// FIXME: If this is being called for auto zoom during find in page,
// then if the user manually zooms in it'd be nice to preserve the
// relative increase in zoom they caused (if they zoom out then it's ok
// to zoom them back in again). This isn't compatible with our current
// double-tap zoom strategy (fitting the containing block to the screen)
// though.
float screenWidth = m_size.width / scale;
float screenHeight = m_size.height / scale;
// Scroll to vertically align the block.
if (rect.height < screenHeight) {
// Vertically center short blocks.
rect.y -= 0.5 * (screenHeight - rect.height);
} else {
// Ensure position we're zooming to (+ padding) isn't off the bottom of
// the screen.
rect.y = max<float>(rect.y, hitPoint.y + padding - screenHeight);
} // Otherwise top align the block.
// Do the same thing for horizontal alignment.
if (rect.width < screenWidth)
rect.x -= 0.5 * (screenWidth - rect.width);
else
rect.x = max<float>(rect.x, hitPoint.x + padding - screenWidth);
scroll.x = rect.x;
scroll.y = rect.y;
scale = clampPageScaleFactorToLimits(scale);
scroll = mainFrameImpl()->frameView()->windowToContents(scroll);
scroll = clampOffsetAtScale(scroll, scale);
}
static bool invokesHandCursor(Node* node, bool shiftKey, Frame* frame)
{
if (!node || !node->renderer())
return false;
ECursor cursor = node->renderer()->style()->cursor();
return cursor == CURSOR_POINTER
|| (cursor == CURSOR_AUTO && frame->eventHandler().useHandCursor(node, node->isLink(), shiftKey));
}
Node* WebViewImpl::bestTapNode(const PlatformGestureEvent& tapEvent)
{
if (!m_page || !m_page->mainFrame())
return 0;
Node* bestTouchNode = 0;
IntPoint touchEventLocation(tapEvent.position());
m_page->mainFrame()->eventHandler().adjustGesturePosition(tapEvent, touchEventLocation);
IntPoint hitTestPoint = m_page->mainFrame()->view()->windowToContents(touchEventLocation);
HitTestResult result = m_page->mainFrame()->eventHandler().hitTestResultAtPoint(hitTestPoint, HitTestRequest::TouchEvent | HitTestRequest::ConfusingAndOftenMisusedDisallowShadowContent);
bestTouchNode = result.targetNode();
Node* firstUncontainedNode = 0;
// We might hit something like an image map that has no renderer on it
// Walk up the tree until we have a node with an attached renderer
while (bestTouchNode && !bestTouchNode->renderer())
bestTouchNode = bestTouchNode->parentNode();
// FIXME: http://crbug.com/289764 - Instead of stopping early on isContainedInParentBoundingBox, LinkHighlight
// should calculate the appropriate rects (currently it just uses the linebox)
// Check if we're in the subtree of a node with a hand cursor
// this is the heuristic we use to determine if we show a highlight on tap
while (bestTouchNode && !invokesHandCursor(bestTouchNode, false, m_page->mainFrame())) {
if (!firstUncontainedNode && !bestTouchNode->renderer()->isContainedInParentBoundingBox())
firstUncontainedNode = bestTouchNode;
bestTouchNode = bestTouchNode->parentNode();
}
if (!bestTouchNode)
return 0;
if (firstUncontainedNode)
return firstUncontainedNode;
// We should pick the largest enclosing node with hand cursor set.
while (bestTouchNode->parentNode()
&& invokesHandCursor(bestTouchNode->parentNode(), false, m_page->mainFrame())
&& bestTouchNode->renderer()->isContainedInParentBoundingBox())
bestTouchNode = bestTouchNode->parentNode();
return bestTouchNode;
}
void WebViewImpl::enableTapHighlightAtPoint(const PlatformGestureEvent& tapEvent)
{
Node* touchNode = bestTapNode(tapEvent);
Vector<Node*> highlightNodes;
highlightNodes.append(touchNode);
enableTapHighlights(highlightNodes);
}
void WebViewImpl::enableTapHighlights(Vector<Node*>& highlightNodes)
{
// Always clear any existing highlight when this is invoked, even if we
// don't get a new target to highlight.
m_linkHighlights.clear();
for (size_t i = 0; i < highlightNodes.size(); ++i) {
Node* node = highlightNodes[i];
if (!node || !node->renderer() || !node->renderer()->enclosingLayer())
continue;
Color highlightColor = node->renderer()->style()->tapHighlightColor();
// Safari documentation for -webkit-tap-highlight-color says if the specified color has 0 alpha,
// then tap highlighting is disabled.
// http://developer.apple.com/library/safari/#documentation/appleapplications/reference/safaricssref/articles/standardcssproperties.html
if (!highlightColor.alpha())
continue;
m_linkHighlights.append(LinkHighlight::create(node, this));
}
}
void WebViewImpl::animateDoubleTapZoom(const IntPoint& point)
{
if (!mainFrameImpl())
return;
WebRect rect(point.x(), point.y(), touchPointPadding, touchPointPadding);
WebRect blockBounds = computeBlockBounds(rect, false);
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(point, blockBounds, touchPointPadding, minimumPageScaleFactor() * doubleTapZoomAlreadyLegibleRatio, scale, scroll);
bool stillAtPreviousDoubleTapScale = (pageScaleFactor() == m_doubleTapZoomPageScaleFactor
&& m_doubleTapZoomPageScaleFactor != minimumPageScaleFactor())
|| m_doubleTapZoomPending;
bool scaleUnchanged = fabs(pageScaleFactor() - scale) < minScaleDifference;
bool shouldZoomOut = blockBounds.isEmpty() || scaleUnchanged || stillAtPreviousDoubleTapScale;
bool isAnimating;
if (shouldZoomOut) {
scale = minimumPageScaleFactor();
isAnimating = startPageScaleAnimation(mainFrameImpl()->frameView()->windowToContents(point), true, scale, doubleTapZoomAnimationDurationInSeconds);
} else {
isAnimating = startPageScaleAnimation(scroll, false, scale, doubleTapZoomAnimationDurationInSeconds);
}
if (isAnimating) {
m_doubleTapZoomPageScaleFactor = scale;
m_doubleTapZoomPending = true;
}
}
void WebViewImpl::zoomToFindInPageRect(const WebRect& rect)
{
if (!mainFrameImpl())
return;
WebRect blockBounds = computeBlockBounds(rect, true);
if (blockBounds.isEmpty()) {
// Keep current scale (no need to scroll as x,y will normally already
// be visible). FIXME: Revisit this if it isn't always true.
return;
}
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(WebPoint(rect.x, rect.y), blockBounds, nonUserInitiatedPointPadding, minimumPageScaleFactor(), scale, scroll);
startPageScaleAnimation(scroll, false, scale, findInPageAnimationDurationInSeconds);
}
bool WebViewImpl::zoomToMultipleTargetsRect(const WebRect& rect)
{
if (!mainFrameImpl())
return false;
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(WebPoint(rect.x, rect.y), rect, nonUserInitiatedPointPadding, minimumPageScaleFactor(), scale, scroll);
if (scale <= pageScaleFactor())
return false;
startPageScaleAnimation(scroll, false, scale, multipleTargetsZoomAnimationDurationInSeconds);
return true;
}
void WebViewImpl::numberOfWheelEventHandlersChanged(unsigned numberOfWheelHandlers)
{
if (m_client)
m_client->numberOfWheelEventHandlersChanged(numberOfWheelHandlers);
}
void WebViewImpl::hasTouchEventHandlers(bool hasTouchHandlers)
{
if (m_client)
m_client->hasTouchEventHandlers(hasTouchHandlers);
}
bool WebViewImpl::hasTouchEventHandlersAt(const WebPoint& point)
{
// FIXME: Implement this. Note that the point must be divided by pageScaleFactor.
return true;
}
#if !OS(MACOSX)
// Mac has no way to open a context menu based on a keyboard event.
bool WebViewImpl::sendContextMenuEvent(const WebKeyboardEvent& event)
{
// The contextMenuController() holds onto the last context menu that was
// popped up on the page until a new one is created. We need to clear
// this menu before propagating the event through the DOM so that we can
// detect if we create a new menu for this event, since we won't create
// a new menu if the DOM swallows the event and the defaultEventHandler does
// not run.
page()->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
Frame* focusedFrame = page()->focusController().focusedOrMainFrame();
bool handled = focusedFrame->eventHandler().sendContextMenuEventForKey();
m_contextMenuAllowed = false;
return handled;
}
#endif
bool WebViewImpl::keyEventDefault(const WebKeyboardEvent& event)
{
Frame* frame = focusedWebCoreFrame();
if (!frame)
return false;
switch (event.type) {
case WebInputEvent::Char:
if (event.windowsKeyCode == VKEY_SPACE) {
int keyCode = ((event.modifiers & WebInputEvent::ShiftKey) ? VKEY_PRIOR : VKEY_NEXT);
return scrollViewWithKeyboard(keyCode, event.modifiers);
}
break;
case WebInputEvent::RawKeyDown:
if (event.modifiers == WebInputEvent::ControlKey) {
switch (event.windowsKeyCode) {
#if !OS(MACOSX)
case 'A':
focusedFrame()->executeCommand(WebString::fromUTF8("SelectAll"));
return true;
case VKEY_INSERT:
case 'C':
focusedFrame()->executeCommand(WebString::fromUTF8("Copy"));
return true;
#endif
// Match FF behavior in the sense that Ctrl+home/end are the only Ctrl
// key combinations which affect scrolling. Safari is buggy in the
// sense that it scrolls the page for all Ctrl+scrolling key
// combinations. For e.g. Ctrl+pgup/pgdn/up/down, etc.
case VKEY_HOME:
case VKEY_END:
break;
default:
return false;
}
}
if (!event.isSystemKey && !(event.modifiers & WebInputEvent::ShiftKey))
return scrollViewWithKeyboard(event.windowsKeyCode, event.modifiers);
break;
default:
break;
}
return false;
}
bool WebViewImpl::scrollViewWithKeyboard(int keyCode, int modifiers)
{
ScrollDirection scrollDirection;
ScrollGranularity scrollGranularity;
#if OS(MACOSX)
// Control-Up/Down should be PageUp/Down on Mac.
if (modifiers & WebMouseEvent::ControlKey) {
if (keyCode == VKEY_UP)
keyCode = VKEY_PRIOR;
else if (keyCode == VKEY_DOWN)
keyCode = VKEY_NEXT;
}
#endif
if (!mapKeyCodeForScroll(keyCode, &scrollDirection, &scrollGranularity))
return false;
return propagateScroll(scrollDirection, scrollGranularity);
}
bool WebViewImpl::mapKeyCodeForScroll(int keyCode,
WebCore::ScrollDirection* scrollDirection,
WebCore::ScrollGranularity* scrollGranularity)
{
switch (keyCode) {
case VKEY_LEFT:
*scrollDirection = ScrollLeft;
*scrollGranularity = ScrollByLine;
break;
case VKEY_RIGHT:
*scrollDirection = ScrollRight;
*scrollGranularity = ScrollByLine;
break;
case VKEY_UP:
*scrollDirection = ScrollUp;
*scrollGranularity = ScrollByLine;
break;
case VKEY_DOWN:
*scrollDirection = ScrollDown;
*scrollGranularity = ScrollByLine;
break;
case VKEY_HOME:
*scrollDirection = ScrollUp;
*scrollGranularity = ScrollByDocument;
break;
case VKEY_END:
*scrollDirection = ScrollDown;
*scrollGranularity = ScrollByDocument;
break;
case VKEY_PRIOR: // page up
*scrollDirection = ScrollUp;
*scrollGranularity = ScrollByPage;
break;
case VKEY_NEXT: // page down
*scrollDirection = ScrollDown;
*scrollGranularity = ScrollByPage;
break;
default:
return false;
}
return true;
}
void WebViewImpl::hideSelectPopup()
{
if (m_selectPopup)
m_selectPopup->hidePopup();
}
bool WebViewImpl::propagateScroll(ScrollDirection scrollDirection,
ScrollGranularity scrollGranularity)
{
Frame* frame = focusedWebCoreFrame();
if (!frame)
return false;
bool scrollHandled = frame->eventHandler().scrollOverflow(scrollDirection, scrollGranularity);
Frame* currentFrame = frame;
while (!scrollHandled && currentFrame) {
scrollHandled = currentFrame->view()->scroll(scrollDirection, scrollGranularity);
currentFrame = currentFrame->tree().parent();
}
return scrollHandled;
}
void WebViewImpl::popupOpened(WebCore::PopupContainer* popupContainer)
{
if (popupContainer->popupType() == WebCore::PopupContainer::Select) {
ASSERT(!m_selectPopup);
m_selectPopup = popupContainer;
Document* document = mainFrameImpl()->frame()->document();
WheelController::from(document)->didAddWheelEventHandler(document);
}
}
void WebViewImpl::popupClosed(WebCore::PopupContainer* popupContainer)
{
if (popupContainer->popupType() == WebCore::PopupContainer::Select) {
ASSERT(m_selectPopup);
m_selectPopup = 0;
Document* document = mainFrameImpl()->frame()->document();
WheelController::from(document)->didRemoveWheelEventHandler(document);
}
}
PagePopup* WebViewImpl::openPagePopup(PagePopupClient* client, const IntRect& originBoundsInRootView)
{
ASSERT(client);
if (hasOpenedPopup())
hidePopups();
ASSERT(!m_pagePopup);
WebWidget* popupWidget = m_client->createPopupMenu(WebPopupTypePage);
ASSERT(popupWidget);
m_pagePopup = toWebPagePopupImpl(popupWidget);
if (!m_pagePopup->initialize(this, client, originBoundsInRootView)) {
m_pagePopup->closePopup();
m_pagePopup = 0;
}
return m_pagePopup.get();
}
void WebViewImpl::closePagePopup(PagePopup* popup)
{
ASSERT(popup);
WebPagePopupImpl* popupImpl = toWebPagePopupImpl(popup);
ASSERT(m_pagePopup.get() == popupImpl);
if (m_pagePopup.get() != popupImpl)
return;
m_pagePopup->closePopup();
m_pagePopup = 0;
}
void WebViewImpl::hideAutofillPopup()
{
if (m_autofillPopupShowing) {
m_autofillPopup->hidePopup();
m_autofillPopupShowing = false;
}
}
WebHelperPluginImpl* WebViewImpl::createHelperPlugin(const String& pluginType, const WebDocument& hostDocument)
{
WebWidget* popupWidget = m_client->createPopupMenu(WebPopupTypeHelperPlugin);
ASSERT(popupWidget);
WebHelperPluginImpl* helperPlugin = toWebHelperPluginImpl(popupWidget);
if (!helperPlugin->initialize(pluginType, hostDocument, this)) {
helperPlugin->closeHelperPlugin();
helperPlugin = 0;
}
return helperPlugin;
}
void WebViewImpl::closeHelperPluginSoon(PassRefPtr<WebHelperPluginImpl> helperPlugin)
{
m_helperPluginsPendingClose.append(helperPlugin);
if (!m_helperPluginCloseTimer.isActive())
m_helperPluginCloseTimer.startOneShot(0);
}
void WebViewImpl::closePendingHelperPlugins(Timer<WebViewImpl>* timer)
{
ASSERT_UNUSED(timer, !timer || timer == &m_helperPluginCloseTimer);
ASSERT(!m_helperPluginsPendingClose.isEmpty());
Vector<RefPtr<WebHelperPluginImpl> > helperPlugins;
helperPlugins.swap(m_helperPluginsPendingClose);
for (Vector<RefPtr<WebHelperPluginImpl> >::iterator it = helperPlugins.begin();
it != helperPlugins.end(); ++it) {
(*it)->closeHelperPlugin();
}
ASSERT(m_helperPluginsPendingClose.isEmpty());
}
Frame* WebViewImpl::focusedWebCoreFrame() const
{
return m_page ? m_page->focusController().focusedOrMainFrame() : 0;
}
WebViewImpl* WebViewImpl::fromPage(Page* page)
{
if (!page)
return 0;
return static_cast<WebViewImpl*>(page->chrome().client().webView());
}
// WebWidget ------------------------------------------------------------------
void WebViewImpl::close()
{
if (m_page) {
// Initiate shutdown for the entire frameset. This will cause a lot of
// notifications to be sent.
if (m_page->mainFrame())
m_page->mainFrame()->loader().frameDetached();
m_page.clear();
}
// Should happen after m_page.clear().
if (m_devToolsAgent)
m_devToolsAgent.clear();
// Helper Plugins must be closed now since doing so accesses RenderViewImpl,
// which will be destroyed after this function returns.
if (m_helperPluginCloseTimer.isActive()) {
m_helperPluginCloseTimer.stop();
closePendingHelperPlugins(0);
}
// Reset the delegate to prevent notifications being sent as we're being
// deleted.
m_client = 0;
deref(); // Balances ref() acquired in WebView::create
}
void WebViewImpl::willStartLiveResize()
{
if (mainFrameImpl() && mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->willStartLiveResize();
Frame* frame = mainFrameImpl()->frame();
WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(frame);
if (pluginContainer)
pluginContainer->willStartLiveResize();
}
WebSize WebViewImpl::size()
{
return m_size;
}
void WebViewImpl::resize(const WebSize& newSize)
{
if (m_shouldAutoResize || m_size == newSize)
return;
FrameView* view = mainFrameImpl()->frameView();
if (!view)
return;
WebSize oldSize = m_size;
float oldPageScaleFactor = pageScaleFactor();
int oldContentsWidth = contentsSize().width();
m_size = newSize;
bool shouldAnchorAndRescaleViewport = settings()->mainFrameResizesAreOrientationChanges()
&& oldSize.width && oldContentsWidth && newSize.width != oldSize.width;
ViewportAnchor viewportAnchor(&mainFrameImpl()->frame()->eventHandler());
if (shouldAnchorAndRescaleViewport) {
viewportAnchor.setAnchor(view->visibleContentRect(),
FloatSize(viewportAnchorXCoord, viewportAnchorYCoord));
}
updatePageDefinedViewportConstraints(mainFrameImpl()->frame()->document()->viewportDescription());
updateMainFrameLayoutSize();
WebDevToolsAgentPrivate* agentPrivate = devToolsAgentPrivate();
if (agentPrivate)
agentPrivate->webViewResized(newSize);
WebFrameImpl* webFrame = mainFrameImpl();
if (webFrame->frameView()) {
webFrame->frameView()->resize(m_size);
if (m_pinchViewports)
m_pinchViewports->setViewportSize(m_size);
}
if (settings()->viewportEnabled() && !m_fixedLayoutSizeLock) {
// Relayout immediately to recalculate the minimum scale limit.
if (view->needsLayout())
view->layout();
if (shouldAnchorAndRescaleViewport) {
float viewportWidthRatio = static_cast<float>(newSize.width) / oldSize.width;
float contentsWidthRatio = static_cast<float>(contentsSize().width()) / oldContentsWidth;
float scaleMultiplier = viewportWidthRatio / contentsWidthRatio;
IntSize viewportSize = view->visibleContentRect().size();
if (scaleMultiplier != 1) {
float newPageScaleFactor = oldPageScaleFactor * scaleMultiplier;
viewportSize.scale(pageScaleFactor() / newPageScaleFactor);
IntPoint scrollOffsetAtNewScale = viewportAnchor.computeOrigin(viewportSize);
setPageScaleFactor(newPageScaleFactor, scrollOffsetAtNewScale);
} else {
IntPoint scrollOffsetAtNewScale = clampOffsetAtScale(viewportAnchor.computeOrigin(viewportSize), pageScaleFactor());
updateMainFrameScrollPosition(scrollOffsetAtNewScale, false);
}
}
}
sendResizeEventAndRepaint();
}
void WebViewImpl::willEndLiveResize()
{
if (mainFrameImpl() && mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->willEndLiveResize();
Frame* frame = mainFrameImpl()->frame();
WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(frame);
if (pluginContainer)
pluginContainer->willEndLiveResize();
}
void WebViewImpl::willEnterFullScreen()
{
m_fullscreenController->willEnterFullScreen();
}
void WebViewImpl::didEnterFullScreen()
{
m_fullscreenController->didEnterFullScreen();
}
void WebViewImpl::willExitFullScreen()
{
m_fullscreenController->willExitFullScreen();
}
void WebViewImpl::didExitFullScreen()
{
m_fullscreenController->didExitFullScreen();
}
void WebViewImpl::animate(double monotonicFrameBeginTime)
{
TRACE_EVENT0("webkit", "WebViewImpl::animate");
if (!monotonicFrameBeginTime)
monotonicFrameBeginTime = monotonicallyIncreasingTime();
// Create synthetic wheel events as necessary for fling.
if (m_gestureAnimation) {
if (m_gestureAnimation->animate(monotonicFrameBeginTime))
scheduleAnimation();
else {
endActiveFlingAnimation();
PlatformGestureEvent endScrollEvent(PlatformEvent::GestureScrollEnd,
m_positionOnFlingStart, m_globalPositionOnFlingStart,
IntSize(), 0, false, false, false, false,
0, 0, 0, 0);
mainFrameImpl()->frame()->eventHandler().handleGestureScrollEnd(endScrollEvent);
}
}
if (!m_page)
return;
PageWidgetDelegate::animate(m_page.get(), monotonicFrameBeginTime);
if (m_continuousPaintingEnabled) {
ContinuousPainter::setNeedsDisplayRecursive(m_rootGraphicsLayer, m_pageOverlays.get());
m_client->scheduleAnimation();
}
}
void WebViewImpl::layout()
{
TRACE_EVENT0("webkit", "WebViewImpl::layout");
PageWidgetDelegate::layout(m_page.get());
updateLayerTreeBackgroundColor();
for (size_t i = 0; i < m_linkHighlights.size(); ++i)
m_linkHighlights[i]->updateGeometry();
}
void WebViewImpl::enterForceCompositingMode(bool enter)
{
if (page()->settings().forceCompositingMode() == enter)
return;
TRACE_EVENT1("webkit", "WebViewImpl::enterForceCompositingMode", "enter", enter);
settingsImpl()->setForceCompositingMode(enter);
if (enter) {
if (!m_page)
return;
Frame* mainFrame = m_page->mainFrame();
if (!mainFrame)
return;
mainFrame->view()->updateCompositingLayersAfterStyleChange();
}
}
void WebViewImpl::doPixelReadbackToCanvas(WebCanvas* canvas, const IntRect& rect)
{
ASSERT(m_layerTreeView);
SkBitmap target;
target.setConfig(SkBitmap::kARGB_8888_Config, rect.width(), rect.height(), rect.width() * 4);
target.allocPixels();
m_layerTreeView->compositeAndReadback(target.getPixels(), rect);
#if (!SK_R32_SHIFT && SK_B32_SHIFT == 16)
// The compositor readback always gives back pixels in BGRA order, but for
// example Android's Skia uses RGBA ordering so the red and blue channels
// need to be swapped.
uint8_t* pixels = reinterpret_cast<uint8_t*>(target.getPixels());
for (size_t i = 0; i < target.getSize(); i += 4)
std::swap(pixels[i], pixels[i + 2]);
#endif
canvas->writePixels(target, rect.x(), rect.y());
}
void WebViewImpl::paint(WebCanvas* canvas, const WebRect& rect, PaintOptions option)
{
#if !OS(ANDROID)
// ReadbackFromCompositorIfAvailable is the only option available on non-Android.
// Ideally, Android would always use ReadbackFromCompositorIfAvailable as well.
ASSERT(option == ReadbackFromCompositorIfAvailable);
#endif
if (option == ReadbackFromCompositorIfAvailable && isAcceleratedCompositingActive()) {
// If a canvas was passed in, we use it to grab a copy of the
// freshly-rendered pixels.
if (canvas) {
// Clip rect to the confines of the rootLayerTexture.
IntRect resizeRect(rect);
resizeRect.intersect(IntRect(IntPoint(0, 0), m_layerTreeView->deviceViewportSize()));
doPixelReadbackToCanvas(canvas, resizeRect);
}
} else {
FrameView* view = page()->mainFrame()->view();
PaintBehavior oldPaintBehavior = view->paintBehavior();
if (isAcceleratedCompositingActive()) {
ASSERT(option == ForceSoftwareRenderingAndIgnoreGPUResidentContent);
view->setPaintBehavior(oldPaintBehavior | PaintBehaviorFlattenCompositingLayers);
}
double paintStart = currentTime();
PageWidgetDelegate::paint(m_page.get(), pageOverlays(), canvas, rect, isTransparent() ? PageWidgetDelegate::Translucent : PageWidgetDelegate::Opaque);
double paintEnd = currentTime();
double pixelsPerSec = (rect.width * rect.height) / (paintEnd - paintStart);
blink::Platform::current()->histogramCustomCounts("Renderer4.SoftwarePaintDurationMS", (paintEnd - paintStart) * 1000, 0, 120, 30);
blink::Platform::current()->histogramCustomCounts("Renderer4.SoftwarePaintMegapixPerSecond", pixelsPerSec / 1000000, 10, 210, 30);
if (isAcceleratedCompositingActive()) {
ASSERT(option == ForceSoftwareRenderingAndIgnoreGPUResidentContent);
view->setPaintBehavior(oldPaintBehavior);
}
}
}
bool WebViewImpl::isTrackingRepaints() const
{
if (!page())
return false;
FrameView* view = page()->mainFrame()->view();
return view->isTrackingRepaints();
}
void WebViewImpl::themeChanged()
{
if (!page())
return;
FrameView* view = page()->mainFrame()->view();
WebRect damagedRect(0, 0, m_size.width, m_size.height);
view->invalidateRect(damagedRect);
}
void WebViewImpl::enterFullScreenForElement(WebCore::Element* element)
{
m_fullscreenController->enterFullScreenForElement(element);
}
void WebViewImpl::exitFullScreenForElement(WebCore::Element* element)
{
m_fullscreenController->exitFullScreenForElement(element);
}
bool WebViewImpl::hasHorizontalScrollbar()
{
return mainFrameImpl()->frameView()->horizontalScrollbar();
}
bool WebViewImpl::hasVerticalScrollbar()
{
return mainFrameImpl()->frameView()->verticalScrollbar();
}
const WebInputEvent* WebViewImpl::m_currentInputEvent = 0;
bool WebViewImpl::handleInputEvent(const WebInputEvent& inputEvent)
{
TRACE_EVENT0("input", "WebViewImpl::handleInputEvent");
// If we've started a drag and drop operation, ignore input events until
// we're done.
if (m_doingDragAndDrop)
return true;
if (m_devToolsAgent && m_devToolsAgent->handleInputEvent(m_page.get(), inputEvent))
return true;
// Report the event to be NOT processed by WebKit, so that the browser can handle it appropriately.
if (m_ignoreInputEvents)
return false;
TemporaryChange<const WebInputEvent*> currentEventChange(m_currentInputEvent, &inputEvent);
if (isPointerLocked() && WebInputEvent::isMouseEventType(inputEvent.type)) {
pointerLockMouseEvent(inputEvent);
return true;
}
if (m_mouseCaptureNode && WebInputEvent::isMouseEventType(inputEvent.type)) {
TRACE_EVENT1("input", "captured mouse event", "type", inputEvent.type);
// Save m_mouseCaptureNode since mouseCaptureLost() will clear it.
RefPtr<Node> node = m_mouseCaptureNode;
// Not all platforms call mouseCaptureLost() directly.
if (inputEvent.type == WebInputEvent::MouseUp)
mouseCaptureLost();
AtomicString eventType;
switch (inputEvent.type) {
case WebInputEvent::MouseMove:
eventType = EventTypeNames::mousemove;
break;
case WebInputEvent::MouseLeave:
eventType = EventTypeNames::mouseout;
break;
case WebInputEvent::MouseDown:
eventType = EventTypeNames::mousedown;
break;
case WebInputEvent::MouseUp:
eventType = EventTypeNames::mouseup;
break;
default:
ASSERT_NOT_REACHED();
}
node->dispatchMouseEvent(
PlatformMouseEventBuilder(mainFrameImpl()->frameView(), *static_cast<const WebMouseEvent*>(&inputEvent)),
eventType, static_cast<const WebMouseEvent*>(&inputEvent)->clickCount);
return true;
}
return PageWidgetDelegate::handleInputEvent(m_page.get(), *this, inputEvent);
}
void WebViewImpl::setCursorVisibilityState(bool isVisible)
{
if (m_page)
m_page->setIsCursorVisible(isVisible);
}
void WebViewImpl::mouseCaptureLost()
{
TRACE_EVENT_ASYNC_END0("input", "capturing mouse", this);
m_mouseCaptureNode = 0;
}
void WebViewImpl::setFocus(bool enable)
{
m_page->focusController().setFocused(enable);
if (enable) {
m_page->focusController().setActive(true);
RefPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
if (focusedFrame) {
Element* element = focusedFrame->document()->focusedElement();
if (element && focusedFrame->selection().selection().isNone()) {
// If the selection was cleared while the WebView was not
// focused, then the focus element shows with a focus ring but
// no caret and does respond to keyboard inputs.
if (element->isTextFormControl()) {
element->updateFocusAppearance(true);
} else if (element->isContentEditable()) {
// updateFocusAppearance() selects all the text of
// contentseditable DIVs. So we set the selection explicitly
// instead. Note that this has the side effect of moving the
// caret back to the beginning of the text.
Position position(element, 0, Position::PositionIsOffsetInAnchor);
focusedFrame->selection().setSelection(VisibleSelection(position, SEL_DEFAULT_AFFINITY));
}
}
}
m_imeAcceptEvents = true;
} else {
hidePopups();
// Clear focus on the currently focused frame if any.
if (!m_page)
return;
Frame* frame = m_page->mainFrame();
if (!frame)
return;
RefPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
if (focusedFrame) {
// Finish an ongoing composition to delete the composition node.
if (focusedFrame->inputMethodController().hasComposition()) {
if (m_autofillClient)
m_autofillClient->setIgnoreTextChanges(true);
focusedFrame->inputMethodController().confirmComposition();
if (m_autofillClient)
m_autofillClient->setIgnoreTextChanges(false);
}
m_imeAcceptEvents = false;
}
}
}
bool WebViewImpl::setComposition(
const WebString& text,
const WebVector<WebCompositionUnderline>& underlines,
int selectionStart,
int selectionEnd)
{
Frame* focused = focusedWebCoreFrame();
if (!focused || !m_imeAcceptEvents)
return false;
if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
return plugin->setComposition(text, underlines, selectionStart, selectionEnd);
// The input focus has been moved to another WebWidget object.
// We should use this |editor| object only to complete the ongoing
// composition.
InputMethodController& inputMethodController = focused->inputMethodController();
if (!focused->editor().canEdit() && !inputMethodController.hasComposition())
return false;
// We should verify the parent node of this IME composition node are
// editable because JavaScript may delete a parent node of the composition
// node. In this case, WebKit crashes while deleting texts from the parent
// node, which doesn't exist any longer.
RefPtr<Range> range = inputMethodController.compositionRange();
if (range) {
Node* node = range->startContainer();
if (!node || !node->isContentEditable())
return false;
}
// If we're not going to fire a keypress event, then the keydown event was
// canceled. In that case, cancel any existing composition.
if (text.isEmpty() || m_suppressNextKeypressEvent) {
// A browser process sent an IPC message which does not contain a valid
// string, which means an ongoing composition has been canceled.
// If the ongoing composition has been canceled, replace the ongoing
// composition string with an empty string and complete it.
String emptyString;
Vector<CompositionUnderline> emptyUnderlines;
inputMethodController.setComposition(emptyString, emptyUnderlines, 0, 0);
return text.isEmpty();
}
// When the range of composition underlines overlap with the range between
// selectionStart and selectionEnd, WebKit somehow won't paint the selection
// at all (see InlineTextBox::paint() function in InlineTextBox.cpp).
// But the selection range actually takes effect.
inputMethodController.setComposition(String(text),
CompositionUnderlineVectorBuilder(underlines),
selectionStart, selectionEnd);
return inputMethodController.hasComposition();
}
bool WebViewImpl::confirmComposition()
{
return confirmComposition(DoNotKeepSelection);
}
bool WebViewImpl::confirmComposition(ConfirmCompositionBehavior selectionBehavior)
{
return confirmComposition(WebString(), selectionBehavior);
}
bool WebViewImpl::confirmComposition(const WebString& text)
{
return confirmComposition(text, DoNotKeepSelection);
}
bool WebViewImpl::confirmComposition(const WebString& text, ConfirmCompositionBehavior selectionBehavior)
{
Frame* focused = focusedWebCoreFrame();
if (!focused || !m_imeAcceptEvents)
return false;
if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
return plugin->confirmComposition(text, selectionBehavior);
return focused->inputMethodController().confirmCompositionOrInsertText(text, selectionBehavior == KeepSelection ? InputMethodController::KeepSelection : InputMethodController::DoNotKeepSelection);
}
bool WebViewImpl::compositionRange(size_t* location, size_t* length)
{
Frame* focused = focusedWebCoreFrame();
if (!focused || !m_imeAcceptEvents)
return false;
RefPtr<Range> range = focused->inputMethodController().compositionRange();
if (!range)
return false;
Element* editable = focused->selection().rootEditableElementOrDocumentElement();
ASSERT(editable);
PlainTextRange plainTextRange(PlainTextRange::create(*editable, *range.get()));
if (plainTextRange.isNull())
return false;
*location = plainTextRange.start();
*length = plainTextRange.length();
return true;
}
WebTextInputInfo WebViewImpl::textInputInfo()
{
WebTextInputInfo info;
Frame* focused = focusedWebCoreFrame();
if (!focused)
return info;
FrameSelection& selection = focused->selection();
Node* node = selection.selection().rootEditableElement();
if (!node)
return info;
info.inputMode = inputModeOfFocusedElement();
info.type = textInputType();
if (info.type == WebTextInputTypeNone)
return info;
if (!focused->editor().canEdit())
return info;
info.value = plainText(rangeOfContents(node).get());
if (info.value.isEmpty())
return info;
if (RefPtr<Range> range = selection.selection().firstRange()) {
PlainTextRange plainTextRange(PlainTextRange::create(*node, *range.get()));
if (plainTextRange.isNotNull()) {
info.selectionStart = plainTextRange.start();
info.selectionEnd = plainTextRange.end();
}
}
if (RefPtr<Range> range = focused->inputMethodController().compositionRange()) {
PlainTextRange plainTextRange(PlainTextRange::create(*node, *range.get()));
if (plainTextRange.isNotNull()) {
info.compositionStart = plainTextRange.start();
info.compositionEnd = plainTextRange.end();
}
}
return info;
}
WebTextInputType WebViewImpl::textInputType()
{
Element* element = focusedElement();
if (!element)
return WebTextInputTypeNone;
if (element->hasTagName(HTMLNames::inputTag)) {
HTMLInputElement* input = toHTMLInputElement(element);
if (input->isDisabledOrReadOnly())
return WebTextInputTypeNone;
if (input->isPasswordField())
return WebTextInputTypePassword;
if (input->isSearchField())
return WebTextInputTypeSearch;
if (input->isEmailField())
return WebTextInputTypeEmail;
if (input->isNumberField())
return WebTextInputTypeNumber;
if (input->isTelephoneField())
return WebTextInputTypeTelephone;
if (input->isURLField())
return WebTextInputTypeURL;
if (input->isDateField())
return WebTextInputTypeDate;
if (input->isDateTimeLocalField())
return WebTextInputTypeDateTimeLocal;
if (input->isMonthField())
return WebTextInputTypeMonth;
if (input->isTimeField())
return WebTextInputTypeTime;
if (input->isWeekField())
return WebTextInputTypeWeek;
if (input->isTextField())
return WebTextInputTypeText;
return WebTextInputTypeNone;
}
if (isHTMLTextAreaElement(element)) {
if (toHTMLTextAreaElement(element)->isDisabledOrReadOnly())
return WebTextInputTypeNone;
return WebTextInputTypeTextArea;
}
#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
if (element->isHTMLElement()) {
if (toHTMLElement(element)->isDateTimeFieldElement())
return WebTextInputTypeDateTimeField;
}
#endif
if (element->shouldUseInputMethod())
return WebTextInputTypeContentEditable;
return WebTextInputTypeNone;
}
WebString WebViewImpl::inputModeOfFocusedElement()
{
if (!RuntimeEnabledFeatures::inputModeAttributeEnabled())
return WebString();
Element* element = focusedElement();
if (!element)
return WebString();
if (element->hasTagName(HTMLNames::inputTag)) {
const HTMLInputElement* input = toHTMLInputElement(element);
if (input->supportsInputModeAttribute())
return input->fastGetAttribute(HTMLNames::inputmodeAttr).lower();
return WebString();
}
if (isHTMLTextAreaElement(element)) {
const HTMLTextAreaElement* textarea = toHTMLTextAreaElement(element);
return textarea->fastGetAttribute(HTMLNames::inputmodeAttr).lower();
}
return WebString();
}
bool WebViewImpl::selectionBounds(WebRect& anchor, WebRect& focus) const
{
const Frame* frame = focusedWebCoreFrame();
if (!frame)
return false;
FrameSelection& selection = frame->selection();
if (selection.isCaret()) {
anchor = focus = selection.absoluteCaretBounds();
} else {
RefPtr<Range> selectedRange = selection.toNormalizedRange();
if (!selectedRange)
return false;
RefPtr<Range> range(Range::create(selectedRange->startContainer()->document(),
selectedRange->startContainer(),
selectedRange->startOffset(),
selectedRange->startContainer(),
selectedRange->startOffset()));
anchor = frame->editor().firstRectForRange(range.get());
range = Range::create(selectedRange->endContainer()->document(),
selectedRange->endContainer(),
selectedRange->endOffset(),
selectedRange->endContainer(),
selectedRange->endOffset());
focus = frame->editor().firstRectForRange(range.get());
}
IntRect scaledAnchor(frame->view()->contentsToWindow(anchor));
IntRect scaledFocus(frame->view()->contentsToWindow(focus));
scaledAnchor.scale(pageScaleFactor());
scaledFocus.scale(pageScaleFactor());
anchor = scaledAnchor;
focus = scaledFocus;
if (!selection.selection().isBaseFirst())
std::swap(anchor, focus);
return true;
}
InputMethodContext* WebViewImpl::inputMethodContext()
{
if (!m_imeAcceptEvents)
return 0;
Frame* focusedFrame = focusedWebCoreFrame();
if (!focusedFrame)
return 0;
Element* target = focusedFrame->document()->focusedElement();
if (target && target->hasInputMethodContext())
return target->inputMethodContext();
return 0;
}
WebPlugin* WebViewImpl::focusedPluginIfInputMethodSupported(Frame* frame)
{
WebPluginContainerImpl* container = WebFrameImpl::pluginContainerFromNode(frame, WebNode(focusedElement()));
if (container && container->supportsInputMethod())
return container->plugin();
return 0;
}
void WebViewImpl::didShowCandidateWindow()
{
if (InputMethodContext* context = inputMethodContext())
context->dispatchCandidateWindowShowEvent();
}
void WebViewImpl::didUpdateCandidateWindow()
{
if (InputMethodContext* context = inputMethodContext())
context->dispatchCandidateWindowUpdateEvent();
}
void WebViewImpl::didHideCandidateWindow()
{
if (InputMethodContext* context = inputMethodContext())
context->dispatchCandidateWindowHideEvent();
}
bool WebViewImpl::selectionTextDirection(WebTextDirection& start, WebTextDirection& end) const
{
const Frame* frame = focusedWebCoreFrame();
if (!frame)
return false;
FrameSelection& selection = frame->selection();
if (!selection.toNormalizedRange())
return false;
start = selection.start().primaryDirection() == RTL ? WebTextDirectionRightToLeft : WebTextDirectionLeftToRight;
end = selection.end().primaryDirection() == RTL ? WebTextDirectionRightToLeft : WebTextDirectionLeftToRight;
return true;
}
bool WebViewImpl::isSelectionAnchorFirst() const
{
if (const Frame* frame = focusedWebCoreFrame())
return frame->selection().selection().isBaseFirst();
return false;
}
bool WebViewImpl::setEditableSelectionOffsets(int start, int end)
{
const Frame* focused = focusedWebCoreFrame();
if (!focused)
return false;
return focused->inputMethodController().setEditableSelectionOffsets(PlainTextRange(start, end));
}
bool WebViewImpl::setCompositionFromExistingText(int compositionStart, int compositionEnd, const WebVector<WebCompositionUnderline>& underlines)
{
const Frame* focused = focusedWebCoreFrame();
if (!focused)
return false;
if (!focused->editor().canEdit())
return false;
InputMethodController& inputMethodController = focused->inputMethodController();
inputMethodController.cancelComposition();
if (compositionStart == compositionEnd)
return true;
inputMethodController.setCompositionFromExistingText(CompositionUnderlineVectorBuilder(underlines), compositionStart, compositionEnd);
return true;
}
WebVector<WebCompositionUnderline> WebViewImpl::compositionUnderlines() const
{
const Frame* focused = focusedWebCoreFrame();
if (!focused)
return WebVector<WebCompositionUnderline>();
const Vector<CompositionUnderline>& underlines = focused->inputMethodController().customCompositionUnderlines();
WebVector<WebCompositionUnderline> results(underlines.size());
for (size_t index = 0; index < underlines.size(); ++index) {
CompositionUnderline underline = underlines[index];
results[index] = WebCompositionUnderline(underline.startOffset, underline.endOffset, static_cast<WebColor>(underline.color.rgb()), underline.thick);
}
return results;
}
void WebViewImpl::extendSelectionAndDelete(int before, int after)
{
Frame* focused = focusedWebCoreFrame();
if (!focused)
return;
if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused)) {
plugin->extendSelectionAndDelete(before, after);
return;
}
focused->inputMethodController().extendSelectionAndDelete(before, after);
}
bool WebViewImpl::isSelectionEditable() const
{
if (const Frame* frame = focusedWebCoreFrame())
return frame->selection().isContentEditable();
return false;
}
WebColor WebViewImpl::backgroundColor() const
{
if (isTransparent())
return Color::transparent;
if (!m_page)
return m_baseBackgroundColor;
if (!m_page->mainFrame())
return m_baseBackgroundColor;
FrameView* view = m_page->mainFrame()->view();
Color backgroundColor = view->documentBackgroundColor();
if (!backgroundColor.isValid())
return m_baseBackgroundColor;
return backgroundColor.rgb();
}
bool WebViewImpl::caretOrSelectionRange(size_t* location, size_t* length)
{
const Frame* focused = focusedWebCoreFrame();
if (!focused)
return false;
PlainTextRange selectionOffsets = focused->inputMethodController().getSelectionOffsets();
if (selectionOffsets.isNull())
return false;
*location = selectionOffsets.start();
*length = selectionOffsets.length();
return true;
}
void WebViewImpl::setTextDirection(WebTextDirection direction)
{
// The Editor::setBaseWritingDirection() function checks if we can change
// the text direction of the selected node and updates its DOM "dir"
// attribute and its CSS "direction" property.
// So, we just call the function as Safari does.
const Frame* focused = focusedWebCoreFrame();
if (!focused)
return;
Editor& editor = focused->editor();
if (!editor.canEdit())
return;
switch (direction) {
case WebTextDirectionDefault:
editor.setBaseWritingDirection(NaturalWritingDirection);
break;
case WebTextDirectionLeftToRight:
editor.setBaseWritingDirection(LeftToRightWritingDirection);
break;
case WebTextDirectionRightToLeft:
editor.setBaseWritingDirection(RightToLeftWritingDirection);
break;
default:
notImplemented();
break;
}
}
bool WebViewImpl::isAcceleratedCompositingActive() const
{
return m_isAcceleratedCompositingActive;
}
void WebViewImpl::willCloseLayerTreeView()
{
setIsAcceleratedCompositingActive(false);
m_layerTreeView = 0;
}
void WebViewImpl::didAcquirePointerLock()
{
if (page())
page()->pointerLockController().didAcquirePointerLock();
}
void WebViewImpl::didNotAcquirePointerLock()
{
if (page())
page()->pointerLockController().didNotAcquirePointerLock();
}
void WebViewImpl::didLosePointerLock()
{
if (page())
page()->pointerLockController().didLosePointerLock();
}
void WebViewImpl::didChangeWindowResizerRect()
{
if (mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->windowResizerRectChanged();
}
// WebView --------------------------------------------------------------------
WebSettingsImpl* WebViewImpl::settingsImpl()
{
if (!m_webSettings)
m_webSettings = adoptPtr(new WebSettingsImpl(&m_page->settings()));
ASSERT(m_webSettings);
return m_webSettings.get();
}
WebSettings* WebViewImpl::settings()
{
return settingsImpl();
}
WebString WebViewImpl::pageEncoding() const
{
if (!m_page)
return WebString();
// FIXME: Is this check needed?
if (!m_page->mainFrame()->document()->loader())
return WebString();
return m_page->mainFrame()->document()->encodingName();
}
void WebViewImpl::setPageEncoding(const WebString& encodingName)
{
if (!m_page)
return;
// Only change override encoding, don't change default encoding.
// Note that the new encoding must be 0 if it isn't supposed to be set.
String newEncodingName;
if (!encodingName.isEmpty())
newEncodingName = encodingName;
m_page->mainFrame()->loader().reload(NormalReload, KURL(), newEncodingName);
}
bool WebViewImpl::dispatchBeforeUnloadEvent()
{
// FIXME: This should really cause a recursive depth-first walk of all
// frames in the tree, calling each frame's onbeforeunload. At the moment,
// we're consistent with Safari 3.1, not IE/FF.
Frame* frame = m_page->mainFrame();
if (!frame)
return true;
return frame->loader().shouldClose();
}
void WebViewImpl::dispatchUnloadEvent()
{
// Run unload handlers.
m_page->mainFrame()->loader().closeURL();
}
WebFrame* WebViewImpl::mainFrame()
{
return mainFrameImpl();
}
WebFrame* WebViewImpl::findFrameByName(
const WebString& name, WebFrame* relativeToFrame)
{
if (!relativeToFrame)
relativeToFrame = mainFrame();
Frame* frame = toWebFrameImpl(relativeToFrame)->frame();
frame = frame->tree().find(name);
return WebFrameImpl::fromFrame(frame);
}
WebFrame* WebViewImpl::focusedFrame()
{
return WebFrameImpl::fromFrame(focusedWebCoreFrame());
}
void WebViewImpl::setFocusedFrame(WebFrame* frame)
{
if (!frame) {
// Clears the focused frame if any.
if (Frame* focusedFrame = focusedWebCoreFrame())
focusedFrame->selection().setFocused(false);
return;
}
Frame* webcoreFrame = toWebFrameImpl(frame)->frame();
webcoreFrame->page()->focusController().setFocusedFrame(webcoreFrame);
}
void WebViewImpl::setInitialFocus(bool reverse)
{
if (!m_page)
return;
Frame* frame = page()->focusController().focusedOrMainFrame();
if (Document* document = frame->document())
document->setFocusedElement(0);
page()->focusController().setInitialFocus(reverse ? FocusDirectionBackward : FocusDirectionForward);
}
void WebViewImpl::clearFocusedNode()
{
RefPtr<Frame> frame = focusedWebCoreFrame();
if (!frame)
return;
RefPtr<Document> document = frame->document();
if (!document)
return;
RefPtr<Element> oldFocusedElement = document->focusedElement();
// Clear the focused node.
document->setFocusedElement(0);
if (!oldFocusedElement)
return;
// If a text field has focus, we need to make sure the selection controller
// knows to remove selection from it. Otherwise, the text field is still
// processing keyboard events even though focus has been moved to the page and
// keystrokes get eaten as a result.
if (oldFocusedElement->isContentEditable() || oldFocusedElement->isTextFormControl())
frame->selection().clear();
}
void WebViewImpl::scrollFocusedNodeIntoView()
{
if (Element* element = focusedElement())
element->scrollIntoViewIfNeeded(true);
}
void WebViewImpl::scrollFocusedNodeIntoRect(const WebRect& rect)
{
Frame* frame = page()->mainFrame();
Element* element = focusedElement();
if (!frame || !frame->view() || !element)
return;
if (!m_webSettings->autoZoomFocusedNodeToLegibleScale()) {
frame->view()->scrollElementToRect(element, IntRect(rect.x, rect.y, rect.width, rect.height));
return;
}
float scale;
IntPoint scroll;
bool needAnimation;
computeScaleAndScrollForFocusedNode(element, scale, scroll, needAnimation);
if (needAnimation)
startPageScaleAnimation(scroll, false, scale, scrollAndScaleAnimationDurationInSeconds);
}
void WebViewImpl::computeScaleAndScrollForFocusedNode(Node* focusedNode, float& newScale, IntPoint& newScroll, bool& needAnimation)
{
focusedNode->document().updateLayoutIgnorePendingStylesheets();
// 'caret' is rect encompassing the blinking cursor.
IntRect textboxRect = focusedNode->document().view()->contentsToWindow(pixelSnappedIntRect(focusedNode->Node::boundingBox()));
WebRect caret, unusedEnd;
selectionBounds(caret, unusedEnd);
IntRect unscaledCaret = caret;
unscaledCaret.scale(1 / pageScaleFactor());
caret = unscaledCaret;
// Pick a scale which is reasonably readable. This is the scale at which
// the caret height will become minReadableCaretHeight (adjusted for dpi
// and font scale factor).
newScale = clampPageScaleFactorToLimits(legibleScale() * minReadableCaretHeight / caret.height);
const float deltaScale = newScale / pageScaleFactor();
// Convert the rects to absolute space in the new scale.
IntRect textboxRectInDocumentCoordinates = textboxRect;
textboxRectInDocumentCoordinates.move(mainFrame()->scrollOffset());
IntRect caretInDocumentCoordinates = caret;
caretInDocumentCoordinates.move(mainFrame()->scrollOffset());
int viewWidth = m_size.width / newScale;
int viewHeight = m_size.height / newScale;
if (textboxRectInDocumentCoordinates.width() <= viewWidth) {
// Field is narrower than screen. Try to leave padding on left so field's
// label is visible, but it's more important to ensure entire field is
// onscreen.
int idealLeftPadding = viewWidth * leftBoxRatio;
int maxLeftPaddingKeepingBoxOnscreen = viewWidth - textboxRectInDocumentCoordinates.width();
newScroll.setX(textboxRectInDocumentCoordinates.x() - min<int>(idealLeftPadding, maxLeftPaddingKeepingBoxOnscreen));
} else {
// Field is wider than screen. Try to left-align field, unless caret would
// be offscreen, in which case right-align the caret.
newScroll.setX(max<int>(textboxRectInDocumentCoordinates.x(), caretInDocumentCoordinates.x() + caretInDocumentCoordinates.width() + caretPadding - viewWidth));
}
if (textboxRectInDocumentCoordinates.height() <= viewHeight) {
// Field is shorter than screen. Vertically center it.
newScroll.setY(textboxRectInDocumentCoordinates.y() - (viewHeight - textboxRectInDocumentCoordinates.height()) / 2);
} else {
// Field is taller than screen. Try to top align field, unless caret would
// be offscreen, in which case bottom-align the caret.
newScroll.setY(max<int>(textboxRectInDocumentCoordinates.y(), caretInDocumentCoordinates.y() + caretInDocumentCoordinates.height() + caretPadding - viewHeight));
}
needAnimation = false;
// If we are at less than the target zoom level, zoom in.
if (deltaScale > minScaleChangeToTriggerZoom)
needAnimation = true;
// If the caret is offscreen, then animate.
IntRect sizeRect(0, 0, viewWidth, viewHeight);
if (!sizeRect.contains(caret))
needAnimation = true;
// If the box is partially offscreen and it's possible to bring it fully
// onscreen, then animate.
if (sizeRect.contains(textboxRectInDocumentCoordinates.width(), textboxRectInDocumentCoordinates.height()) && !sizeRect.contains(textboxRect))
needAnimation = true;
}
void WebViewImpl::advanceFocus(bool reverse)
{
page()->focusController().advanceFocus(reverse ? FocusDirectionBackward : FocusDirectionForward);
}
double WebViewImpl::zoomLevel()
{
return m_zoomLevel;
}
double WebViewImpl::setZoomLevel(double zoomLevel)
{
if (zoomLevel < m_minimumZoomLevel)
m_zoomLevel = m_minimumZoomLevel;
else if (zoomLevel > m_maximumZoomLevel)
m_zoomLevel = m_maximumZoomLevel;
else
m_zoomLevel = zoomLevel;
Frame* frame = mainFrameImpl()->frame();
WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(frame);
if (pluginContainer)
pluginContainer->plugin()->setZoomLevel(m_zoomLevel, false);
else {
float zoomFactor = m_zoomFactorOverride ? m_zoomFactorOverride : static_cast<float>(zoomLevelToZoomFactor(m_zoomLevel));
frame->setPageZoomFactor(zoomFactor);
}
return m_zoomLevel;
}
void WebViewImpl::zoomLimitsChanged(double minimumZoomLevel,
double maximumZoomLevel)
{
m_minimumZoomLevel = minimumZoomLevel;
m_maximumZoomLevel = maximumZoomLevel;
m_client->zoomLimitsChanged(m_minimumZoomLevel, m_maximumZoomLevel);
}
float WebViewImpl::textZoomFactor()
{
return mainFrameImpl()->frame()->textZoomFactor();
}
float WebViewImpl::setTextZoomFactor(float textZoomFactor)
{
Frame* frame = mainFrameImpl()->frame();
if (WebFrameImpl::pluginContainerFromFrame(frame))
return 1;
frame->setTextZoomFactor(textZoomFactor);
return textZoomFactor;
}
void WebViewImpl::fullFramePluginZoomLevelChanged(double zoomLevel)
{
if (zoomLevel == m_zoomLevel)
return;
m_zoomLevel = max(min(zoomLevel, m_maximumZoomLevel), m_minimumZoomLevel);
m_client->zoomLevelChanged();
}
double WebView::zoomLevelToZoomFactor(double zoomLevel)
{
return pow(textSizeMultiplierRatio, zoomLevel);
}
double WebView::zoomFactorToZoomLevel(double factor)
{
// Since factor = 1.2^level, level = log(factor) / log(1.2)
return log(factor) / log(textSizeMultiplierRatio);
}
float WebViewImpl::pageScaleFactor() const
{
if (!page())
return 1;
return page()->pageScaleFactor();
}
float WebViewImpl::clampPageScaleFactorToLimits(float scaleFactor) const
{
return m_pageScaleConstraintsSet.finalConstraints().clampToConstraints(scaleFactor);
}
IntPoint WebViewImpl::clampOffsetAtScale(const IntPoint& offset, float scale)
{
FrameView* view = mainFrameImpl()->frameView();
if (!view)
return offset;
IntPoint maxScrollExtent(contentsSize().width() - view->scrollOrigin().x(), contentsSize().height() - view->scrollOrigin().y());
FloatSize scaledSize = view->unscaledVisibleContentSize();
scaledSize.scale(1 / scale);
IntPoint clampedOffset = offset;
clampedOffset = clampedOffset.shrunkTo(maxScrollExtent - expandedIntSize(scaledSize));
clampedOffset = clampedOffset.expandedTo(-view->scrollOrigin());
return clampedOffset;
}
void WebViewImpl::setPageScaleFactor(float scaleFactor, const WebPoint& origin)
{
if (!page())
return;
IntPoint newScrollOffset = origin;
scaleFactor = clampPageScaleFactorToLimits(scaleFactor);
newScrollOffset = clampOffsetAtScale(newScrollOffset, scaleFactor);
page()->setPageScaleFactor(scaleFactor, newScrollOffset);
}
void WebViewImpl::setPageScaleFactorPreservingScrollOffset(float scaleFactor)
{
if (clampPageScaleFactorToLimits(scaleFactor) == pageScaleFactor())
return;
IntPoint scrollOffset(mainFrame()->scrollOffset().width, mainFrame()->scrollOffset().height);
setPageScaleFactor(scaleFactor, scrollOffset);
}
float WebViewImpl::deviceScaleFactor() const
{
if (!page())
return 1;
return page()->deviceScaleFactor();
}
void WebViewImpl::setDeviceScaleFactor(float scaleFactor)
{
if (!page())
return;
page()->setDeviceScaleFactor(scaleFactor);
if (m_layerTreeView)
updateLayerTreeDeviceScaleFactor();
}
void WebViewImpl::enableAutoResizeMode(const WebSize& minSize, const WebSize& maxSize)
{
m_shouldAutoResize = true;
m_minAutoSize = minSize;
m_maxAutoSize = maxSize;
configureAutoResizeMode();
}
void WebViewImpl::disableAutoResizeMode()
{
m_shouldAutoResize = false;
configureAutoResizeMode();
}
void WebViewImpl::setUserAgentPageScaleConstraints(PageScaleConstraints newConstraints)
{
if (newConstraints == m_pageScaleConstraintsSet.userAgentConstraints())
return;
m_pageScaleConstraintsSet.setUserAgentConstraints(newConstraints);
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
return;
mainFrameImpl()->frameView()->setNeedsLayout();
}
void WebViewImpl::setInitialPageScaleOverride(float initialPageScaleFactorOverride)
{
PageScaleConstraints constraints = m_pageScaleConstraintsSet.userAgentConstraints();
constraints.initialScale = initialPageScaleFactorOverride;
if (constraints == m_pageScaleConstraintsSet.userAgentConstraints())
return;
m_pageScaleConstraintsSet.setNeedsReset(true);
setUserAgentPageScaleConstraints(constraints);
}
void WebViewImpl::setPageScaleFactorLimits(float minPageScale, float maxPageScale)
{
PageScaleConstraints constraints = m_pageScaleConstraintsSet.userAgentConstraints();
constraints.minimumScale = minPageScale;
constraints.maximumScale = maxPageScale;
setUserAgentPageScaleConstraints(constraints);
}
void WebViewImpl::setIgnoreViewportTagScaleLimits(bool ignore)
{
PageScaleConstraints constraints = m_pageScaleConstraintsSet.userAgentConstraints();
if (ignore) {
constraints.minimumScale = m_pageScaleConstraintsSet.defaultConstraints().minimumScale;
constraints.maximumScale = m_pageScaleConstraintsSet.defaultConstraints().maximumScale;
} else {
constraints.minimumScale = -1;
constraints.maximumScale = -1;
}
setUserAgentPageScaleConstraints(constraints);
}
void WebViewImpl::refreshPageScaleFactorAfterLayout()
{
if (!mainFrame() || !page() || !page()->mainFrame() || !page()->mainFrame()->view())
return;
FrameView* view = page()->mainFrame()->view();
updatePageDefinedViewportConstraints(mainFrameImpl()->frame()->document()->viewportDescription());
m_pageScaleConstraintsSet.computeFinalConstraints();
if (settings()->viewportEnabled() && !m_fixedLayoutSizeLock) {
int verticalScrollbarWidth = 0;
if (view->verticalScrollbar() && !view->verticalScrollbar()->isOverlayScrollbar())
verticalScrollbarWidth = view->verticalScrollbar()->width();
m_pageScaleConstraintsSet.adjustFinalConstraintsToContentsSize(m_size, contentsSize(), verticalScrollbarWidth);
}
float newPageScaleFactor = pageScaleFactor();
if (m_pageScaleConstraintsSet.needsReset() && m_pageScaleConstraintsSet.finalConstraints().initialScale != -1) {
newPageScaleFactor = m_pageScaleConstraintsSet.finalConstraints().initialScale;
m_pageScaleConstraintsSet.setNeedsReset(false);
}
setPageScaleFactorPreservingScrollOffset(newPageScaleFactor);
updateLayerTreeViewport();
// Relayout immediately to avoid violating the rule that needsLayout()
// isn't set at the end of a layout.
if (view->needsLayout())
view->layout();
}
void WebViewImpl::updatePageDefinedViewportConstraints(const ViewportDescription& description)
{
if (!settings()->viewportEnabled() || !page() || (!m_size.width && !m_size.height))
return;
ViewportDescription adjustedDescription = description;
if (settingsImpl()->viewportMetaLayoutSizeQuirk() && adjustedDescription.type == ViewportDescription::ViewportMeta) {
if (adjustedDescription.maxWidth.type() == ExtendToZoom)
adjustedDescription.maxWidth = Length(); // auto
const int legacyWidthSnappingMagicNumber = 320;
if (adjustedDescription.maxWidth.isFixed() && adjustedDescription.maxWidth.value() <= legacyWidthSnappingMagicNumber)
adjustedDescription.maxWidth = Length(100, ViewportPercentageWidth);
if (adjustedDescription.maxHeight.isFixed() && adjustedDescription.maxWidth.value() <= m_size.height)
adjustedDescription.maxHeight = Length(100, ViewportPercentageHeight);
adjustedDescription.minWidth = adjustedDescription.maxWidth;
adjustedDescription.minHeight = adjustedDescription.maxHeight;
}
float oldInitialScale = m_pageScaleConstraintsSet.pageDefinedConstraints().initialScale;
m_pageScaleConstraintsSet.updatePageDefinedConstraints(adjustedDescription, m_size);
if (settingsImpl()->clobberUserAgentInitialScaleQuirk()
&& m_pageScaleConstraintsSet.userAgentConstraints().initialScale != -1
&& m_pageScaleConstraintsSet.userAgentConstraints().initialScale * deviceScaleFactor() <= 1) {
if (description.maxWidth == Length(100, ViewportPercentageWidth)
|| (description.maxWidth.type() == ExtendToZoom && m_pageScaleConstraintsSet.pageDefinedConstraints().initialScale == 1.0f))
setInitialPageScaleOverride(-1);
}
m_pageScaleConstraintsSet.adjustForAndroidWebViewQuirks(adjustedDescription, m_size, page()->settings().layoutFallbackWidth(), deviceScaleFactor(), settingsImpl()->supportDeprecatedTargetDensityDPI(), page()->settings().wideViewportQuirkEnabled(), page()->settings().useWideViewport(), page()->settings().loadWithOverviewMode(), settingsImpl()->viewportMetaNonUserScalableQuirk());
float newInitialScale = m_pageScaleConstraintsSet.pageDefinedConstraints().initialScale;
if (oldInitialScale != newInitialScale && newInitialScale != -1) {
m_pageScaleConstraintsSet.setNeedsReset(true);
if (mainFrameImpl() && mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->setNeedsLayout();
}
updateMainFrameLayoutSize();
}
void WebViewImpl::updateMainFrameLayoutSize()
{
if (m_fixedLayoutSizeLock || !mainFrameImpl())
return;
FrameView* view = mainFrameImpl()->frameView();
if (!view)
return;
WebSize layoutSize = m_size;
if (settings()->viewportEnabled()) {
layoutSize = flooredIntSize(m_pageScaleConstraintsSet.pageDefinedConstraints().layoutSize);
if (page()->settings().textAutosizingEnabled() && layoutSize.width != view->layoutSize().width()) {
TextAutosizer* textAutosizer = page()->mainFrame()->document()->textAutosizer();
if (textAutosizer)
textAutosizer->recalculateMultipliers();
}
}
view->setLayoutSize(layoutSize);
}
IntSize WebViewImpl::contentsSize() const
{
RenderView* root = page()->mainFrame()->contentRenderer();
if (!root)
return IntSize();
return root->documentRect().size();
}
WebSize WebViewImpl::contentsPreferredMinimumSize()
{
Document* document = m_page->mainFrame()->document();
if (!document || !document->renderView() || !document->documentElement())
return WebSize();
layout();
FontCachePurgePreventer fontCachePurgePreventer; // Required by minPreferredLogicalWidth().
IntSize preferredMinimumSize(document->renderView()->minPreferredLogicalWidth(), document->documentElement()->scrollHeight());
preferredMinimumSize.scale(zoomLevelToZoomFactor(zoomLevel()));
return preferredMinimumSize;
}
float WebViewImpl::minimumPageScaleFactor() const
{
return m_pageScaleConstraintsSet.finalConstraints().minimumScale;
}
float WebViewImpl::maximumPageScaleFactor() const
{
return m_pageScaleConstraintsSet.finalConstraints().maximumScale;
}
void WebViewImpl::saveScrollAndScaleState()
{
m_savedPageScaleFactor = pageScaleFactor();
m_savedScrollOffset = mainFrame()->scrollOffset();
}
void WebViewImpl::restoreScrollAndScaleState()
{
if (!m_savedPageScaleFactor)
return;
startPageScaleAnimation(IntPoint(m_savedScrollOffset), false, m_savedPageScaleFactor, scrollAndScaleAnimationDurationInSeconds);
resetSavedScrollAndScaleState();
}
void WebViewImpl::resetSavedScrollAndScaleState()
{
m_savedPageScaleFactor = 0;
m_savedScrollOffset = IntSize();
}
void WebViewImpl::resetScrollAndScaleState()
{
page()->setPageScaleFactor(1, IntPoint());
// Clear out the values for the current history item. This will prevent the history item from clobbering the
// value determined during page scale initialization, which may be less than 1.
page()->mainFrame()->loader().saveDocumentAndScrollState();
page()->mainFrame()->loader().clearScrollPositionAndViewState();
m_pageScaleConstraintsSet.setNeedsReset(true);
// Clobber saved scales and scroll offsets.
if (FrameView* view = page()->mainFrame()->document()->view())
view->cacheCurrentScrollPosition();
resetSavedScrollAndScaleState();
}
void WebViewImpl::setFixedLayoutSize(const WebSize& layoutSize)
{
if (!page())
return;
Frame* frame = page()->mainFrame();
if (!frame)
return;
FrameView* view = frame->view();
if (!view)
return;
m_fixedLayoutSizeLock = layoutSize.width || layoutSize.height;
if (m_fixedLayoutSizeLock)
view->setLayoutSize(layoutSize);
else
updateMainFrameLayoutSize();
}
void WebViewImpl::performMediaPlayerAction(const WebMediaPlayerAction& action,
const WebPoint& location)
{
HitTestResult result = hitTestResultForWindowPos(location);
RefPtr<Node> node = result.innerNonSharedNode();
if (!isHTMLVideoElement(node.get()) && !node->hasTagName(HTMLNames::audioTag))
return;
RefPtr<HTMLMediaElement> mediaElement =
static_pointer_cast<HTMLMediaElement>(node);
switch (action.type) {
case WebMediaPlayerAction::Play:
if (action.enable)
mediaElement->play();
else
mediaElement->pause();
break;
case WebMediaPlayerAction::Mute:
mediaElement->setMuted(action.enable);
break;
case WebMediaPlayerAction::Loop:
mediaElement->setLoop(action.enable);
break;
case WebMediaPlayerAction::Controls:
mediaElement->setControls(action.enable);
break;
default:
ASSERT_NOT_REACHED();
}
}
void WebViewImpl::performPluginAction(const WebPluginAction& action,
const WebPoint& location)
{
HitTestResult result = hitTestResultForWindowPos(location);
RefPtr<Node> node = result.innerNonSharedNode();
if (!node->hasTagName(HTMLNames::objectTag) && !node->hasTagName(HTMLNames::embedTag))
return;
RenderObject* object = node->renderer();
if (object && object->isWidget()) {
Widget* widget = toRenderWidget(object)->widget();
if (widget && widget->isPluginContainer()) {
WebPluginContainerImpl* plugin = toPluginContainerImpl(widget);
switch (action.type) {
case WebPluginAction::Rotate90Clockwise:
plugin->plugin()->rotateView(WebPlugin::RotationType90Clockwise);
break;
case WebPluginAction::Rotate90Counterclockwise:
plugin->plugin()->rotateView(WebPlugin::RotationType90Counterclockwise);
break;
default:
ASSERT_NOT_REACHED();
}
}
}
}
WebHitTestResult WebViewImpl::hitTestResultAt(const WebPoint& point)
{
IntPoint scaledPoint = point;
scaledPoint.scale(1 / pageScaleFactor(), 1 / pageScaleFactor());
return hitTestResultForWindowPos(scaledPoint);
}
void WebViewImpl::copyImageAt(const WebPoint& point)
{
if (!m_page)
return;
HitTestResult result = hitTestResultForWindowPos(point);
if (result.absoluteImageURL().isEmpty()) {
// There isn't actually an image at these coordinates. Might be because
// the window scrolled while the context menu was open or because the page
// changed itself between when we thought there was an image here and when
// we actually tried to retreive the image.
//
// FIXME: implement a cache of the most recent HitTestResult to avoid having
// to do two hit tests.
return;
}
m_page->mainFrame()->editor().copyImage(result);
}
void WebViewImpl::dragSourceEndedAt(
const WebPoint& clientPoint,
const WebPoint& screenPoint,
WebDragOperation operation)
{
PlatformMouseEvent pme(clientPoint,
screenPoint,
LeftButton, PlatformEvent::MouseMoved, 0, false, false, false,
false, 0);
m_page->mainFrame()->eventHandler().dragSourceEndedAt(pme,
static_cast<DragOperation>(operation));
}
void WebViewImpl::dragSourceMovedTo(
const WebPoint& clientPoint,
const WebPoint& screenPoint,
WebDragOperation operation)
{
}
void WebViewImpl::dragSourceSystemDragEnded()
{
// It's possible for us to get this callback while not doing a drag if
// it's from a previous page that got unloaded.
if (m_doingDragAndDrop) {
m_page->dragController().dragEnded();
m_doingDragAndDrop = false;
}
}
WebDragOperation WebViewImpl::dragTargetDragEnter(
const WebDragData& webDragData,
const WebPoint& clientPoint,
const WebPoint& screenPoint,
WebDragOperationsMask operationsAllowed,
int keyModifiers)
{
ASSERT(!m_currentDragData);
m_currentDragData = webDragData;
m_operationsAllowed = operationsAllowed;
return dragTargetDragEnterOrOver(clientPoint, screenPoint, DragEnter, keyModifiers);
}
WebDragOperation WebViewImpl::dragTargetDragOver(
const WebPoint& clientPoint,
const WebPoint& screenPoint,
WebDragOperationsMask operationsAllowed,
int keyModifiers)
{
m_operationsAllowed = operationsAllowed;
return dragTargetDragEnterOrOver(clientPoint, screenPoint, DragOver, keyModifiers);
}
void WebViewImpl::dragTargetDragLeave()
{
ASSERT(m_currentDragData);
DragData dragData(
m_currentDragData.get(),
IntPoint(),
IntPoint(),
static_cast<DragOperation>(m_operationsAllowed));
m_page->dragController().dragExited(&dragData);
// FIXME: why is the drag scroll timer not stopped here?
m_dragOperation = WebDragOperationNone;
m_currentDragData = 0;
}
void WebViewImpl::dragTargetDrop(const WebPoint& clientPoint,
const WebPoint& screenPoint,
int keyModifiers)
{
ASSERT(m_currentDragData);
// If this webview transitions from the "drop accepting" state to the "not
// accepting" state, then our IPC message reply indicating that may be in-
// flight, or else delayed by javascript processing in this webview. If a
// drop happens before our IPC reply has reached the browser process, then
// the browser forwards the drop to this webview. So only allow a drop to
// proceed if our webview m_dragOperation state is not DragOperationNone.
if (m_dragOperation == WebDragOperationNone) { // IPC RACE CONDITION: do not allow this drop.
dragTargetDragLeave();
return;
}
m_currentDragData->setModifierKeyState(webInputEventKeyStateToPlatformEventKeyState(keyModifiers));
DragData dragData(
m_currentDragData.get(),
clientPoint,
screenPoint,
static_cast<DragOperation>(m_operationsAllowed));
m_page->dragController().performDrag(&dragData);
m_dragOperation = WebDragOperationNone;
m_currentDragData = 0;
}
void WebViewImpl::spellingMarkers(WebVector<uint32_t>* markers)
{
Vector<uint32_t> result;
for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
const Vector<DocumentMarker*>& documentMarkers = frame->document()->markers()->markers();
for (size_t i = 0; i < documentMarkers.size(); ++i)
result.append(documentMarkers[i]->hash());
}
markers->assign(result);
}
WebDragOperation WebViewImpl::dragTargetDragEnterOrOver(const WebPoint& clientPoint, const WebPoint& screenPoint, DragAction dragAction, int keyModifiers)
{
ASSERT(m_currentDragData);
m_currentDragData->setModifierKeyState(webInputEventKeyStateToPlatformEventKeyState(keyModifiers));
DragData dragData(
m_currentDragData.get(),
clientPoint,
screenPoint,
static_cast<DragOperation>(m_operationsAllowed));
DragSession dragSession;
if (dragAction == DragEnter)
dragSession = m_page->dragController().dragEntered(&dragData);
else
dragSession = m_page->dragController().dragUpdated(&dragData);
DragOperation dropEffect = dragSession.operation;
// Mask the drop effect operation against the drag source's allowed operations.
if (!(dropEffect & dragData.draggingSourceOperationMask()))
dropEffect = DragOperationNone;
m_dragOperation = static_cast<WebDragOperation>(dropEffect);
return m_dragOperation;
}
void WebViewImpl::sendResizeEventAndRepaint()
{
// FIXME: This is wrong. The FrameView is responsible sending a resizeEvent
// as part of layout. Layout is also responsible for sending invalidations
// to the embedder. This method and all callers may be wrong. -- eseidel.
if (mainFrameImpl()->frameView()) {
// Enqueues the resize event.
mainFrameImpl()->frame()->document()->enqueueResizeEvent();
}
if (m_client) {
if (isAcceleratedCompositingActive()) {
updateLayerTreeViewport();
} else {
WebRect damagedRect(0, 0, m_size.width, m_size.height);
m_client->didInvalidateRect(damagedRect);
}
}
if (m_pageOverlays)
m_pageOverlays->update();
}
void WebViewImpl::configureAutoResizeMode()
{
if (!mainFrameImpl() || !mainFrameImpl()->frame() || !mainFrameImpl()->frame()->view())
return;
mainFrameImpl()->frame()->view()->enableAutoSizeMode(m_shouldAutoResize, m_minAutoSize, m_maxAutoSize);
}
unsigned long WebViewImpl::createUniqueIdentifierForRequest()
{
return createUniqueIdentifier();
}
void WebViewImpl::inspectElementAt(const WebPoint& point)
{
if (!m_page)
return;
if (point.x == -1 || point.y == -1) {
m_page->inspectorController().inspect(0);
} else {
HitTestRequest::HitTestRequestType hitType = HitTestRequest::Move | HitTestRequest::ReadOnly | HitTestRequest::AllowChildFrameContent | HitTestRequest::IgnorePointerEventsNone;
HitTestRequest request(hitType);
FrameView* frameView = m_page->mainFrame()->view();
IntPoint transformedPoint(point);
transformedPoint = transformedPoint - frameView->inputEventsOffsetForEmulation();
transformedPoint.scale(1 / frameView->inputEventsScaleFactor(), 1 / frameView->inputEventsScaleFactor());
HitTestResult result(m_page->mainFrame()->view()->windowToContents(transformedPoint));
m_page->mainFrame()->contentRenderer()->hitTest(request, result);
Node* node = result.innerNode();
if (!node && m_page->mainFrame()->document())
node = m_page->mainFrame()->document()->documentElement();
m_page->inspectorController().inspect(node);
}
}
WebString WebViewImpl::inspectorSettings() const
{
return m_inspectorSettings;
}
void WebViewImpl::setInspectorSettings(const WebString& settings)
{
m_inspectorSettings = settings;
}
bool WebViewImpl::inspectorSetting(const WebString& key, WebString* value) const
{
if (!m_inspectorSettingsMap->contains(key))
return false;
*value = m_inspectorSettingsMap->get(key);
return true;
}
void WebViewImpl::setInspectorSetting(const WebString& key,
const WebString& value)
{
m_inspectorSettingsMap->set(key, value);
client()->didUpdateInspectorSetting(key, value);
}
void WebViewImpl::setCompositorDeviceScaleFactorOverride(float deviceScaleFactor)
{
m_compositorDeviceScaleFactorOverride = deviceScaleFactor;
if (page() && m_layerTreeView)
updateLayerTreeDeviceScaleFactor();
}
void WebViewImpl::setRootLayerTransform(const WebSize& rootLayerOffset, float rootLayerScale)
{
m_rootLayerScale = rootLayerScale;
m_rootLayerOffset = rootLayerOffset;
if (mainFrameImpl())
mainFrameImpl()->setInputEventsTransformForEmulation(m_rootLayerOffset, m_rootLayerScale);
updateRootLayerTransform();
}
WebDevToolsAgent* WebViewImpl::devToolsAgent()
{
return m_devToolsAgent.get();
}
WebAXObject WebViewImpl::accessibilityObject()
{
if (!mainFrameImpl())
return WebAXObject();
Document* document = mainFrameImpl()->frame()->document();
return WebAXObject(
document->axObjectCache()->getOrCreate(document->renderer()));
}
void WebViewImpl::applyAutofillSuggestions(
const WebNode& node,
const WebVector<WebString>& names,
const WebVector<WebString>& labels,
const WebVector<WebString>& icons,
const WebVector<int>& itemIDs,
int separatorIndex)
{
ASSERT(names.size() == labels.size());
ASSERT(names.size() == itemIDs.size());
if (names.isEmpty()) {
hideAutofillPopup();
return;
}
RefPtr<Element> element = focusedElement();
// If the node for which we queried the Autofill suggestions is not the
// focused node, then we have nothing to do. FIXME: also check the
// caret is at the end and that the text has not changed.
if (!element || element != PassRefPtr<Node>(node)) {
hideAutofillPopup();
return;
}
HTMLInputElement* inputElem = toHTMLInputElement(element);
// The first time the Autofill popup is shown we'll create the client and
// the popup.
if (!m_autofillPopupClient)
m_autofillPopupClient = adoptPtr(new AutofillPopupMenuClient);
m_autofillPopupClient->initialize(
inputElem, names, labels, icons, itemIDs, separatorIndex);
if (!m_autofillPopup) {
PopupContainerSettings popupSettings = autofillPopupSettings;
popupSettings.deviceSupportsTouch = settingsImpl()->deviceSupportsTouch();
m_autofillPopup = PopupContainer::create(m_autofillPopupClient.get(),
PopupContainer::Suggestion,
popupSettings);
}
if (m_autofillPopupShowing) {
refreshAutofillPopup();
} else {
m_autofillPopupShowing = true;
IntRect rect = element->pixelSnappedBoundingBox();
m_autofillPopup->showInRect(FloatQuad(rect), rect.size(), element->ownerDocument()->view(), 0);
}
}
void WebViewImpl::hidePopups()
{
hideSelectPopup();
hideAutofillPopup();
if (m_pagePopup)
closePagePopup(m_pagePopup.get());
}
void WebViewImpl::performCustomContextMenuAction(unsigned action)
{
if (!m_page)
return;
ContextMenu* menu = m_page->contextMenuController().contextMenu();
if (!menu)
return;
const ContextMenuItem* item = menu->itemWithAction(static_cast<ContextMenuAction>(ContextMenuItemBaseCustomTag + action));
if (item)
m_page->contextMenuController().contextMenuItemSelected(item);
m_page->contextMenuController().clearContextMenu();
}
void WebViewImpl::showContextMenu()
{
if (!page())
return;
page()->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
if (Frame* focusedFrame = page()->focusController().focusedOrMainFrame())
focusedFrame->eventHandler().sendContextMenuEventForKey();
m_contextMenuAllowed = false;
}
WebString WebViewImpl::getSmartClipData(WebRect rect)
{
Frame* frame = focusedWebCoreFrame();
if (!frame)
return WebString();
return WebCore::SmartClip(frame).dataForRect(rect).toString();
}
void WebViewImpl::setIsTransparent(bool isTransparent)
{
// Set any existing frames to be transparent.
Frame* frame = m_page->mainFrame();
while (frame) {
frame->view()->setTransparent(isTransparent);
frame = frame->tree().traverseNext();
}
// Future frames check this to know whether to be transparent.
m_isTransparent = isTransparent;
}
bool WebViewImpl::isTransparent() const
{
return m_isTransparent;
}
void WebViewImpl::setBaseBackgroundColor(WebColor color)
{
if (m_baseBackgroundColor == color)
return;
m_baseBackgroundColor = color;
if (m_page->mainFrame())
m_page->mainFrame()->view()->setBaseBackgroundColor(color);
updateLayerTreeBackgroundColor();
}
void WebViewImpl::setIsActive(bool active)
{
if (page())
page()->focusController().setActive(active);
}
bool WebViewImpl::isActive() const
{
return page() ? page()->focusController().isActive() : false;
}
void WebViewImpl::setDomainRelaxationForbidden(bool forbidden, const WebString& scheme)
{
SchemeRegistry::setDomainRelaxationForbiddenForURLScheme(forbidden, String(scheme));
}
void WebViewImpl::setWindowFeatures(const WebWindowFeatures& features)
{
m_page->chrome().setWindowFeatures(features);
}
void WebViewImpl::setSelectionColors(unsigned activeBackgroundColor,
unsigned activeForegroundColor,
unsigned inactiveBackgroundColor,
unsigned inactiveForegroundColor) {
#if USE(DEFAULT_RENDER_THEME)
RenderThemeChromiumDefault::setSelectionColors(activeBackgroundColor, activeForegroundColor, inactiveBackgroundColor, inactiveForegroundColor);
RenderTheme::theme().platformColorsDidChange();
#endif
}
void WebView::injectStyleSheet(const WebString& sourceCode, const WebVector<WebString>& patternsIn, WebView::StyleInjectionTarget injectIn)
{
Vector<String> patterns;
for (size_t i = 0; i < patternsIn.size(); ++i)
patterns.append(patternsIn[i]);
PageGroup* pageGroup = PageGroup::sharedGroup();
pageGroup->injectStyleSheet(sourceCode, patterns, static_cast<WebCore::StyleInjectionTarget>(injectIn));
}
void WebView::removeInjectedStyleSheets()
{
PageGroup::sharedGroup()->removeInjectedStyleSheets();
}
void WebViewImpl::didCommitLoad(bool isNewNavigation, bool isNavigationWithinPage)
{
if (isNewNavigation && !isNavigationWithinPage)
m_pageScaleConstraintsSet.setNeedsReset(true);
// Make sure link highlight from previous page is cleared.
m_linkHighlights.clear();
endActiveFlingAnimation();
resetSavedScrollAndScaleState();
}
void WebViewImpl::layoutUpdated(WebFrameImpl* webframe)
{
if (!m_client || webframe != mainFrameImpl())
return;
if (m_layerTreeViewCommitsDeferred) {
// If we finished a layout while in deferred commit mode,
// that means it's time to start producing frames again so un-defer.
if (m_layerTreeView)
m_layerTreeView->setDeferCommits(false);
m_layerTreeViewCommitsDeferred = false;
}
if (m_shouldAutoResize && mainFrameImpl()->frame() && mainFrameImpl()->frame()->view()) {
WebSize frameSize = mainFrameImpl()->frame()->view()->frameRect().size();
if (frameSize != m_size) {
m_size = frameSize;
m_client->didAutoResize(m_size);
sendResizeEventAndRepaint();
}
}
if (m_pageScaleConstraintsSet.constraintsDirty())
refreshPageScaleFactorAfterLayout();
m_client->didUpdateLayout();
}
void WebViewImpl::didChangeContentsSize()
{
m_pageScaleConstraintsSet.didChangeContentsSize(contentsSize(), pageScaleFactor());
}
void WebViewImpl::deviceOrPageScaleFactorChanged()
{
if (pageScaleFactor() && pageScaleFactor() != 1)
enterForceCompositingMode(true);
m_pageScaleConstraintsSet.setNeedsReset(false);
updateLayerTreeViewport();
}
bool WebViewImpl::useExternalPopupMenus()
{
return shouldUseExternalPopupMenus;
}
void WebViewImpl::startDragging(Frame* frame,
const WebDragData& dragData,
WebDragOperationsMask mask,
const WebImage& dragImage,
const WebPoint& dragImageOffset)
{
if (!m_client)
return;
ASSERT(!m_doingDragAndDrop);
m_doingDragAndDrop = true;
m_client->startDragging(WebFrameImpl::fromFrame(frame), dragData, mask, dragImage, dragImageOffset);
}
void WebViewImpl::setIgnoreInputEvents(bool newValue)
{
ASSERT(m_ignoreInputEvents != newValue);
m_ignoreInputEvents = newValue;
}
void WebViewImpl::setBackgroundColorOverride(WebColor color)
{
m_backgroundColorOverride = color;
updateLayerTreeBackgroundColor();
}
void WebViewImpl::setZoomFactorOverride(float zoomFactor)
{
m_zoomFactorOverride = zoomFactor;
setZoomLevel(zoomLevel());
}
void WebViewImpl::addPageOverlay(WebPageOverlay* overlay, int zOrder)
{
if (!m_pageOverlays)
m_pageOverlays = PageOverlayList::create(this);
m_pageOverlays->add(overlay, zOrder);
}
void WebViewImpl::removePageOverlay(WebPageOverlay* overlay)
{
if (m_pageOverlays && m_pageOverlays->remove(overlay) && m_pageOverlays->empty())
m_pageOverlays = nullptr;
}
void WebViewImpl::setOverlayLayer(WebCore::GraphicsLayer* layer)
{
if (m_rootGraphicsLayer) {
if (layer->parent() != m_rootGraphicsLayer)
m_rootGraphicsLayer->addChild(layer);
}
}
NotificationPresenterImpl* WebViewImpl::notificationPresenterImpl()
{
if (!m_notificationPresenter.isInitialized() && m_client)
m_notificationPresenter.initialize(m_client->notificationPresenter());
return &m_notificationPresenter;
}
void WebViewImpl::refreshAutofillPopup()
{
ASSERT(m_autofillPopupShowing);
// Hide the popup if it has become empty.
if (!m_autofillPopupClient->listSize()) {
hideAutofillPopup();
return;
}
WebRect newWidgetRect = m_autofillPopup->refresh(focusedElement()->pixelSnappedBoundingBox());
// Let's resize the backing window if necessary.
WebPopupMenuImpl* popupMenu = toWebPopupMenuImpl(m_autofillPopup->client());
if (popupMenu && popupMenu->client()->windowRect() != newWidgetRect)
popupMenu->client()->setWindowRect(newWidgetRect);
}
Element* WebViewImpl::focusedElement()
{
Frame* frame = m_page->focusController().focusedFrame();
if (!frame)
return 0;
Document* document = frame->document();
if (!document)
return 0;
return document->focusedElement();
}
HitTestResult WebViewImpl::hitTestResultForWindowPos(const IntPoint& pos)
{
IntPoint docPoint(m_page->mainFrame()->view()->windowToContents(pos));
return m_page->mainFrame()->eventHandler().hitTestResultAtPoint(docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ConfusingAndOftenMisusedDisallowShadowContent);
}
void WebViewImpl::setTabsToLinks(bool enable)
{
m_tabsToLinks = enable;
}
bool WebViewImpl::tabsToLinks() const
{
return m_tabsToLinks;
}
void WebViewImpl::suppressInvalidations(bool enable)
{
if (m_client)
m_client->suppressCompositorScheduling(enable);
}
bool WebViewImpl::allowsAcceleratedCompositing()
{
return !m_compositorCreationFailed;
}
void WebViewImpl::setRootGraphicsLayer(GraphicsLayer* layer)
{
suppressInvalidations(true);
if (page()->settings().pinchVirtualViewportEnabled()) {
if (!m_pinchViewports)
m_pinchViewports = PinchViewports::create(this);
m_pinchViewports->setOverflowControlsHostLayer(layer);
m_pinchViewports->setViewportSize(mainFrameImpl()->frame()->view()->frameRect().size());
if (layer) {
m_rootGraphicsLayer = m_pinchViewports->rootGraphicsLayer();
m_rootLayer = m_pinchViewports->rootGraphicsLayer()->platformLayer();
} else {
m_rootGraphicsLayer = 0;
m_rootLayer = 0;
}
} else {
m_rootGraphicsLayer = layer;
m_rootLayer = layer ? layer->platformLayer() : 0;
}
setIsAcceleratedCompositingActive(layer);
updateRootLayerTransform();
if (m_layerTreeView) {
if (m_rootLayer) {
m_layerTreeView->setRootLayer(*m_rootLayer);
// We register viewport layers here since there may not be a layer
// tree view prior to this point.
if (m_pinchViewports) {
m_pinchViewports->registerViewportLayersWithTreeView(m_layerTreeView);
} else {
GraphicsLayer* rootScrollLayer = compositor()->scrollLayer();
ASSERT(rootScrollLayer);
WebLayer* pageScaleLayer = rootScrollLayer->parent() ? rootScrollLayer->parent()->platformLayer() : 0;
m_layerTreeView->registerViewportLayers(pageScaleLayer, rootScrollLayer->platformLayer(), 0);
}
} else {
m_layerTreeView->clearRootLayer();
if (m_pinchViewports)
m_pinchViewports->clearViewportLayersForTreeView(m_layerTreeView);
else
m_layerTreeView->clearViewportLayers();
}
}
suppressInvalidations(false);
}
void WebViewImpl::scheduleCompositingLayerSync()
{
m_layerTreeView->setNeedsAnimate();
}
void WebViewImpl::scrollRootLayerRect(const IntSize&, const IntRect&)
{
updateLayerTreeViewport();
}
void WebViewImpl::invalidateRect(const IntRect& rect)
{
if (m_isAcceleratedCompositingActive) {
ASSERT(m_layerTreeView);
updateLayerTreeViewport();
} else if (m_client)
m_client->didInvalidateRect(rect);
}
WebCore::GraphicsLayerFactory* WebViewImpl::graphicsLayerFactory() const
{
return m_graphicsLayerFactory.get();
}
WebCore::RenderLayerCompositor* WebViewImpl::compositor() const
{
if (!page()
|| !page()->mainFrame()
|| !page()->mainFrame()->document()
|| !page()->mainFrame()->document()->renderView())
return 0;
return page()->mainFrame()->document()->renderView()->compositor();
}
void WebViewImpl::registerForAnimations(WebLayer* layer)
{
if (m_layerTreeView)
m_layerTreeView->registerForAnimations(layer);
}
WebCore::GraphicsLayer* WebViewImpl::rootGraphicsLayer()
{
return m_rootGraphicsLayer;
}
void WebViewImpl::scheduleAnimation()
{
if (isAcceleratedCompositingActive()) {
ASSERT(m_layerTreeView);
m_layerTreeView->setNeedsAnimate();
return;
}
if (m_client)
m_client->scheduleAnimation();
}
void WebViewImpl::setIsAcceleratedCompositingActive(bool active)
{
blink::Platform::current()->histogramEnumeration("GPU.setIsAcceleratedCompositingActive", active * 2 + m_isAcceleratedCompositingActive, 4);
if (m_isAcceleratedCompositingActive == active)
return;
if (!active) {
m_isAcceleratedCompositingActive = false;
// We need to finish all GL rendering before sending didDeactivateCompositor() to prevent
// flickering when compositing turns off. This is only necessary if we're not in
// force-compositing-mode.
if (m_layerTreeView && !page()->settings().forceCompositingMode())
m_layerTreeView->finishAllRendering();
m_client->didDeactivateCompositor();
if (!m_layerTreeViewCommitsDeferred
&& blink::Platform::current()->isThreadedCompositingEnabled()) {
ASSERT(m_layerTreeView);
// In threaded compositing mode, force compositing mode is always on so setIsAcceleratedCompositingActive(false)
// means that we're transitioning to a new page. Suppress commits until WebKit generates invalidations so
// we don't attempt to paint too early in the next page load.
m_layerTreeView->setDeferCommits(true);
m_layerTreeViewCommitsDeferred = true;
}
} else if (m_layerTreeView) {
m_isAcceleratedCompositingActive = true;
updateLayerTreeViewport();
if (m_pageOverlays)
m_pageOverlays->update();
m_client->didActivateCompositor(0);
} else {
TRACE_EVENT0("webkit", "WebViewImpl::setIsAcceleratedCompositingActive(true)");
m_client->initializeLayerTreeView();
m_layerTreeView = m_client->layerTreeView();
if (m_layerTreeView) {
m_layerTreeView->setRootLayer(*m_rootLayer);
bool visible = page()->visibilityState() == PageVisibilityStateVisible;
m_layerTreeView->setVisible(visible);
updateLayerTreeDeviceScaleFactor();
m_layerTreeView->setPageScaleFactorAndLimits(pageScaleFactor(), minimumPageScaleFactor(), maximumPageScaleFactor());
updateLayerTreeBackgroundColor();
m_layerTreeView->setHasTransparentBackground(isTransparent());
#if USE(RUBBER_BANDING)
RefPtr<Image> overhangImage = OverscrollTheme::theme()->getOverhangImage();
if (overhangImage)
m_layerTreeView->setOverhangBitmap(overhangImage->nativeImageForCurrentFrame()->bitmap());
#endif
updateLayerTreeViewport();
m_client->didActivateCompositor(0);
m_isAcceleratedCompositingActive = true;
m_compositorCreationFailed = false;
if (m_pageOverlays)
m_pageOverlays->update();
m_layerTreeView->setShowFPSCounter(m_showFPSCounter);
m_layerTreeView->setShowPaintRects(m_showPaintRects);
m_layerTreeView->setShowDebugBorders(m_showDebugBorders);
m_layerTreeView->setContinuousPaintingEnabled(m_continuousPaintingEnabled);
m_layerTreeView->setShowScrollBottleneckRects(m_showScrollBottleneckRects);
} else {
m_isAcceleratedCompositingActive = false;
m_client->didDeactivateCompositor();
m_compositorCreationFailed = true;
}
}
if (page())
page()->mainFrame()->view()->setClipsRepaints(!m_isAcceleratedCompositingActive);
}
void WebViewImpl::updateMainFrameScrollPosition(const IntPoint& scrollPosition, bool programmaticScroll)
{
FrameView* frameView = page()->mainFrame()->view();
if (!frameView)
return;
if (frameView->scrollPosition() == scrollPosition)
return;
bool oldProgrammaticScroll = frameView->inProgrammaticScroll();
frameView->setInProgrammaticScroll(programmaticScroll);
frameView->notifyScrollPositionChanged(scrollPosition);
frameView->setInProgrammaticScroll(oldProgrammaticScroll);
}
void WebViewImpl::applyScrollAndScale(const WebSize& scrollDelta, float pageScaleDelta)
{
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
return;
if (pageScaleDelta == 1) {
TRACE_EVENT_INSTANT2("webkit", "WebViewImpl::applyScrollAndScale::scrollBy", "x", scrollDelta.width, "y", scrollDelta.height);
WebSize webScrollOffset = mainFrame()->scrollOffset();
IntPoint scrollOffset(webScrollOffset.width + scrollDelta.width, webScrollOffset.height + scrollDelta.height);
updateMainFrameScrollPosition(scrollOffset, false);
} else {
// The page scale changed, so apply a scale and scroll in a single
// operation.
WebSize scrollOffset = mainFrame()->scrollOffset();
scrollOffset.width += scrollDelta.width;
scrollOffset.height += scrollDelta.height;
WebPoint scrollPoint(scrollOffset.width, scrollOffset.height);
setPageScaleFactor(pageScaleFactor() * pageScaleDelta, scrollPoint);
m_doubleTapZoomPending = false;
}
}
void WebViewImpl::didExitCompositingMode()
{
ASSERT(m_isAcceleratedCompositingActive);
setIsAcceleratedCompositingActive(false);
m_compositorCreationFailed = true;
m_client->didInvalidateRect(IntRect(0, 0, m_size.width, m_size.height));
// Force a style recalc to remove all the composited layers.
m_page->mainFrame()->document()->setNeedsStyleRecalc();
if (m_pageOverlays)
m_pageOverlays->update();
}
void WebViewImpl::updateLayerTreeViewport()
{
if (!page() || !m_layerTreeView)
return;
m_layerTreeView->setPageScaleFactorAndLimits(pageScaleFactor(), minimumPageScaleFactor(), maximumPageScaleFactor());
}
void WebViewImpl::updateLayerTreeBackgroundColor()
{
if (!m_layerTreeView)
return;
m_layerTreeView->setBackgroundColor(m_backgroundColorOverride != Color::transparent ? m_backgroundColorOverride : backgroundColor());
}
void WebViewImpl::updateLayerTreeDeviceScaleFactor()
{
ASSERT(page());
ASSERT(m_layerTreeView);
float deviceScaleFactor = m_compositorDeviceScaleFactorOverride ? m_compositorDeviceScaleFactorOverride : page()->deviceScaleFactor();
m_layerTreeView->setDeviceScaleFactor(deviceScaleFactor);
}
void WebViewImpl::updateRootLayerTransform()
{
if (m_rootGraphicsLayer) {
WebCore::TransformationMatrix transform;
transform.translate(m_rootLayerOffset.width, m_rootLayerOffset.height);
transform = transform.scale(m_rootLayerScale);
m_rootGraphicsLayer->setChildrenTransform(transform);
}
}
void WebViewImpl::selectAutofillSuggestionAtIndex(unsigned listIndex)
{
if (m_autofillPopupClient && listIndex < m_autofillPopupClient->getSuggestionsCount())
m_autofillPopupClient->valueChanged(listIndex);
}
bool WebViewImpl::detectContentOnTouch(const WebPoint& position)
{
HitTestResult touchHit = hitTestResultForWindowPos(position);
if (touchHit.isContentEditable())
return false;
Node* node = touchHit.innerNode();
if (!node || !node->isTextNode())
return false;
// Ignore when tapping on links or nodes listening to click events, unless the click event is on the
// body element, in which case it's unlikely that the original node itself was intended to be clickable.
for (; node && !node->hasTagName(HTMLNames::bodyTag); node = node->parentNode()) {
if (node->isLink() || node->willRespondToTouchEvents() || node->willRespondToMouseClickEvents())
return false;
}
WebContentDetectionResult content = m_client->detectContentAround(touchHit);
if (!content.isValid())
return false;
m_client->scheduleContentIntent(content.intent());
return true;
}
void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState,
bool isInitialState) {
if (!page())
return;
ASSERT(visibilityState == WebPageVisibilityStateVisible || visibilityState == WebPageVisibilityStateHidden || visibilityState == WebPageVisibilityStatePrerender);
m_page->setVisibilityState(static_cast<PageVisibilityState>(static_cast<int>(visibilityState)), isInitialState);
if (m_layerTreeView) {
bool visible = visibilityState == WebPageVisibilityStateVisible;
m_layerTreeView->setVisible(visible);
}
}
bool WebViewImpl::requestPointerLock()
{
return m_client && m_client->requestPointerLock();
}
void WebViewImpl::requestPointerUnlock()
{
if (m_client)
m_client->requestPointerUnlock();
}
bool WebViewImpl::isPointerLocked()
{
return m_client && m_client->isPointerLocked();
}
void WebViewImpl::pointerLockMouseEvent(const WebInputEvent& event)
{
AtomicString eventType;
switch (event.type) {
case WebInputEvent::MouseDown:
eventType = EventTypeNames::mousedown;
break;
case WebInputEvent::MouseUp:
eventType = EventTypeNames::mouseup;
break;
case WebInputEvent::MouseMove:
eventType = EventTypeNames::mousemove;
break;
default:
ASSERT_NOT_REACHED();
}
const WebMouseEvent& mouseEvent = static_cast<const WebMouseEvent&>(event);
if (page())
page()->pointerLockController().dispatchLockedMouseEvent(
PlatformMouseEventBuilder(mainFrameImpl()->frameView(), mouseEvent),
eventType);
}
bool WebViewImpl::shouldDisableDesktopWorkarounds()
{
if (!settings()->viewportEnabled())
return false;
// A document is considered adapted to small screen UAs if one of these holds:
// 1. The author specified viewport has a constrained width that is equal to
// the initial viewport width.
// 2. The author has disabled viewport zoom.
const PageScaleConstraints& constraints = m_pageScaleConstraintsSet.pageDefinedConstraints();
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
return false;
return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
|| (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
}
} // namespace blink