// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Implementation of ChromeActiveDocument #include "chrome_frame/chrome_active_document.h" #include <hlink.h> #include <htiface.h> #include <initguid.h> #include <mshtmcid.h> #include <shdeprecated.h> #include <shlguid.h> #include <shlobj.h> #include <shobjidl.h> #include <tlogstg.h> #include <urlmon.h> #include <wininet.h> #include "base/command_line.h" #include "base/debug/trace_event.h" #include "base/logging.h" #include "base/strings/string_util.h" #include "base/strings/utf_string_conversions.h" #include "base/win/scoped_variant.h" #include "chrome/app/chrome_command_ids.h" #include "chrome/app/chrome_dll_resource.h" #include "chrome/common/automation_messages.h" #include "chrome/common/chrome_constants.h" #include "chrome/test/automation/browser_proxy.h" #include "chrome/test/automation/tab_proxy.h" #include "chrome_frame/bho.h" #include "chrome_frame/bind_context_info.h" #include "chrome_frame/buggy_bho_handling.h" #include "chrome_frame/crash_reporting/crash_metrics.h" #include "chrome_frame/utils.h" #include "content/public/browser/invalidate_type.h" #include "content/public/browser/navigation_type.h" #include "content/public/browser/web_contents.h" #include "content/public/common/page_zoom.h" #include "grit/generated_resources.h" DEFINE_GUID(CGID_DocHostCmdPriv, 0x000214D4L, 0, 0, 0xC0, 0, 0, 0, 0, 0, 0, 0x46); bool g_first_launch_by_process_ = true; const DWORD kIEEncodingIdArray[] = { #define DEFINE_ENCODING_ID_ARRAY(encoding_name, id, chrome_name) encoding_name, INTERNAL_IE_ENCODINGMENU_IDS(DEFINE_ENCODING_ID_ARRAY) #undef DEFINE_ENCODING_ID_ARRAY 0 // The Last data must be 0 to indicate the end of the encoding id array. }; ChromeActiveDocument::ChromeActiveDocument() : navigation_info_(new NavigationInfo()), first_navigation_(true), is_automation_client_reused_(false), popup_allowed_(false), accelerator_table_(NULL) { TRACE_EVENT_BEGIN_ETW("chromeframe.createactivedocument", this, ""); url_fetcher_->set_frame_busting(false); memset(navigation_info_.get(), 0, sizeof(NavigationInfo)); } HRESULT ChromeActiveDocument::FinalConstruct() { // The FinalConstruct implementation in the ChromeFrameActivexBase class // i.e. Base creates an instance of the ChromeFrameAutomationClient class // and initializes it, which would spawn a new Chrome process, etc. // We don't want to be doing this if we have a cached document, whose // automation client instance can be reused. HRESULT hr = BaseActiveX::FinalConstruct(); if (FAILED(hr)) return hr; InitializeAutomationSettings(); find_dialog_.Init(automation_client_.get()); OLECMDF flags = static_cast<OLECMDF>(OLECMDF_ENABLED | OLECMDF_SUPPORTED); null_group_commands_map_[OLECMDID_PRINT] = flags; null_group_commands_map_[OLECMDID_FIND] = flags; null_group_commands_map_[OLECMDID_CUT] = flags; null_group_commands_map_[OLECMDID_COPY] = flags; null_group_commands_map_[OLECMDID_PASTE] = flags; null_group_commands_map_[OLECMDID_SELECTALL] = flags; null_group_commands_map_[OLECMDID_SAVEAS] = flags; mshtml_group_commands_map_[IDM_BASELINEFONT1] = flags; mshtml_group_commands_map_[IDM_BASELINEFONT2] = flags; mshtml_group_commands_map_[IDM_BASELINEFONT3] = flags; mshtml_group_commands_map_[IDM_BASELINEFONT4] = flags; mshtml_group_commands_map_[IDM_BASELINEFONT5] = flags; mshtml_group_commands_map_[IDM_VIEWSOURCE] = flags; HMODULE this_module = reinterpret_cast<HMODULE>(&__ImageBase); accelerator_table_ = LoadAccelerators(this_module, MAKEINTRESOURCE(IDR_CHROME_FRAME_IE_FULL_TAB)); DCHECK(accelerator_table_ != NULL); return S_OK; } ChromeActiveDocument::~ChromeActiveDocument() { DVLOG(1) << __FUNCTION__; if (find_dialog_.IsWindow()) find_dialog_.DestroyWindow(); // ChromeFramePlugin BaseActiveX::Uninitialize(); TRACE_EVENT_END_ETW("chromeframe.createactivedocument", this, ""); } // Override DoVerb STDMETHODIMP ChromeActiveDocument::DoVerb(LONG verb, LPMSG msg, IOleClientSite* active_site, LONG index, HWND parent_window, LPCRECT pos) { // IE will try and in-place activate us in some cases. This happens when // the user opens a new IE window with a URL that has us as the DocObject. // Here we refuse to be activated in-place and we will force IE to UIActivate // us. if (OLEIVERB_INPLACEACTIVATE == verb) return OLEOBJ_E_INVALIDVERB; // Check if we should activate as a docobject or not // (client supports IOleDocumentSite) if (doc_site_) { switch (verb) { case OLEIVERB_SHOW: { base::win::ScopedComPtr<IDocHostUIHandler> doc_host_handler; doc_host_handler.QueryFrom(doc_site_); if (doc_host_handler.get()) doc_host_handler->ShowUI(DOCHOSTUITYPE_BROWSE, this, this, NULL, NULL); } case OLEIVERB_OPEN: case OLEIVERB_UIACTIVATE: if (!m_bUIActive) return doc_site_->ActivateMe(NULL); break; } } return IOleObjectImpl<ChromeActiveDocument>::DoVerb(verb, msg, active_site, index, parent_window, pos); } // Override IOleInPlaceActiveObjectImpl::OnDocWindowActivate STDMETHODIMP ChromeActiveDocument::OnDocWindowActivate(BOOL activate) { DVLOG(1) << __FUNCTION__; return S_OK; } STDMETHODIMP ChromeActiveDocument::TranslateAccelerator(MSG* msg) { DVLOG(1) << __FUNCTION__; if (msg == NULL) return E_POINTER; if (msg->message == WM_KEYDOWN && msg->wParam == VK_TAB) { HWND focus = ::GetFocus(); if (focus != m_hWnd && !::IsChild(m_hWnd, focus)) { // The call to SetFocus triggers a WM_SETFOCUS that makes the base class // set focus to the correct element in Chrome. ::SetFocus(m_hWnd); return S_OK; } } return S_FALSE; } // Override IPersistStorageImpl::IsDirty STDMETHODIMP ChromeActiveDocument::IsDirty() { DVLOG(1) << __FUNCTION__; return S_FALSE; } void ChromeActiveDocument::OnAutomationServerReady() { BaseActiveX::OnAutomationServerReady(); BaseActiveX::GiveFocusToChrome(true); } STDMETHODIMP ChromeActiveDocument::Load(BOOL fully_avalable, IMoniker* moniker_name, LPBC bind_context, DWORD mode) { if (NULL == moniker_name) return E_INVALIDARG; base::win::ScopedComPtr<IOleClientSite> client_site; if (bind_context) { base::win::ScopedComPtr<IUnknown> site; bind_context->GetObjectParam(SZ_HTML_CLIENTSITE_OBJECTPARAM, site.Receive()); if (site) client_site.QueryFrom(site); } if (client_site) { SetClientSite(client_site); DoQueryService(IID_INewWindowManager, client_site, popup_manager_.Receive()); // See if mshtml parsed the html header for us. If so, we need to // clear the browser service flag that we use to indicate that this // browser instance is navigating to a CF document. base::win::ScopedComPtr<IBrowserService> browser_service; DoQueryService(SID_SShellBrowser, client_site, browser_service.Receive()); if (browser_service) { bool flagged = CheckForCFNavigation(browser_service, true); DVLOG_IF(1, flagged) << "Cleared flagged browser service"; } } NavigationManager* mgr = NavigationManager::GetThreadInstance(); DLOG_IF(ERROR, !mgr) << "Couldn't get instance of NavigationManager"; std::wstring url; base::win::ScopedComPtr<BindContextInfo> info; BindContextInfo::FromBindContext(bind_context, info.Receive()); DCHECK(info); if (info && !info->GetUrl().empty()) { url = info->GetUrl(); if (mgr) { // If the original URL contains an anchor, then the URL queried // from the protocol sink wrapper does not contain the anchor. To // workaround this we retrieve the anchor from the navigation manager // and append it to the url retrieved from the protocol sink wrapper. GURL url_for_anchor(mgr->url()); if (url_for_anchor.has_ref()) { url += L"#"; url += UTF8ToWide(url_for_anchor.ref()); } } } else { // If the original URL contains an anchor, then the URL queried // from the moniker does not contain the anchor. To workaround // this we retrieve the URL from our BHO. url = GetActualUrlFromMoniker(moniker_name, bind_context, mgr ? mgr->url(): std::wstring()); } ChromeFrameUrl cf_url; if (!cf_url.Parse(url)) { DLOG(WARNING) << __FUNCTION__ << " Failed to parse url:" << url; return E_INVALIDARG; } std::string referrer(mgr ? mgr->referrer() : std::string()); RendererType renderer_type = cf_url.is_chrome_protocol() ? RENDERER_TYPE_CHROME_GCF_PROTOCOL : RENDERER_TYPE_UNDETERMINED; // With CTransaction patch we have more robust way to grab the referrer for // each top-level-switch-to-CF request by peeking at our sniffing data // object that lives inside the bind context. We also remember the reason // we're rendering the document in Chrome. if (g_patch_helper.state() == PatchHelper::PATCH_PROTOCOL && info) { scoped_refptr<ProtData> prot_data = info->get_prot_data(); if (prot_data) { referrer = prot_data->referrer(); renderer_type = prot_data->renderer_type(); } } // For gcf: URLs allow only about and view-source schemes to pass through for // further inspection. bool is_safe_scheme = cf_url.gurl().SchemeIs(chrome::kAboutScheme) || cf_url.gurl().SchemeIs(content::kViewSourceScheme); if (cf_url.is_chrome_protocol() && !is_safe_scheme && !GetConfigBool(false, kAllowUnsafeURLs)) { DLOG(ERROR) << __FUNCTION__ << " gcf: not allowed:" << url; return E_INVALIDARG; } if (!LaunchUrl(cf_url, referrer)) { DLOG(ERROR) << __FUNCTION__ << " Failed to launch url:" << url; return E_INVALIDARG; } if (!cf_url.is_chrome_protocol() && !cf_url.attach_to_external_tab()) url_fetcher_->SetInfoForUrl(url.c_str(), moniker_name, bind_context); // Log a metric indicating why GCF is rendering in Chrome. // (Note: we only track the renderer type when using the CTransaction patch. // When the code for the browser service patch and for the moniker patch is // removed, this conditional can also go away.) if (RENDERER_TYPE_UNDETERMINED != renderer_type) { UMA_LAUNCH_TYPE_COUNT(renderer_type); } return S_OK; } STDMETHODIMP ChromeActiveDocument::Save(IMoniker* moniker_name, LPBC bind_context, BOOL remember) { return E_NOTIMPL; } STDMETHODIMP ChromeActiveDocument::SaveCompleted(IMoniker* moniker_name, LPBC bind_context) { return E_NOTIMPL; } STDMETHODIMP ChromeActiveDocument::GetCurMoniker(IMoniker** moniker_name) { return E_NOTIMPL; } STDMETHODIMP ChromeActiveDocument::GetClassID(CLSID* class_id) { if (NULL == class_id) return E_POINTER; *class_id = GetObjectCLSID(); return S_OK; } STDMETHODIMP ChromeActiveDocument::QueryStatus(const GUID* cmd_group_guid, ULONG number_of_commands, OLECMD commands[], OLECMDTEXT* command_text) { DVLOG(1) << __FUNCTION__; CommandStatusMap* command_map = NULL; if (cmd_group_guid) { if (IsEqualGUID(*cmd_group_guid, GUID_NULL)) { command_map = &null_group_commands_map_; } else if (IsEqualGUID(*cmd_group_guid, CGID_MSHTML)) { command_map = &mshtml_group_commands_map_; } else if (IsEqualGUID(*cmd_group_guid, CGID_Explorer)) { command_map = &explorer_group_commands_map_; } else if (IsEqualGUID(*cmd_group_guid, CGID_ShellDocView)) { command_map = &shdoc_view_group_commands_map_; } } else { command_map = &null_group_commands_map_; } if (!command_map) { DVLOG(1) << "unsupported command group: " << GuidToString(*cmd_group_guid); return OLECMDERR_E_NOTSUPPORTED; } for (ULONG command_index = 0; command_index < number_of_commands; command_index++) { DVLOG(1) << "Command id = " << commands[command_index].cmdID; CommandStatusMap::iterator index = command_map->find(commands[command_index].cmdID); if (index != command_map->end()) commands[command_index].cmdf = index->second; } return S_OK; } STDMETHODIMP ChromeActiveDocument::Exec(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { DVLOG(1) << __FUNCTION__ << " Cmd id =" << command_id; // Bail out if we have been uninitialized. if (automation_client_.get() && automation_client_->tab()) { return ProcessExecCommand(cmd_group_guid, command_id, cmd_exec_opt, in_args, out_args); } else if (command_id == OLECMDID_REFRESH && cmd_group_guid == NULL) { // If the automation server has crashed and the user is refreshing the // page, let OnRefreshPage attempt to recover. OnRefreshPage(cmd_group_guid, command_id, cmd_exec_opt, in_args, out_args); } return OLECMDERR_E_NOTSUPPORTED; } STDMETHODIMP ChromeActiveDocument::LoadHistory(IStream* stream, IBindCtx* bind_context) { // Read notes in ChromeActiveDocument::SaveHistory DCHECK(stream); LARGE_INTEGER offset = {0}; ULARGE_INTEGER cur_pos = {0}; STATSTG statstg = {0}; stream->Seek(offset, STREAM_SEEK_CUR, &cur_pos); stream->Stat(&statstg, STATFLAG_NONAME); DWORD url_size = statstg.cbSize.LowPart - cur_pos.LowPart; base::win::ScopedBstr url_bstr; DWORD bytes_read = 0; stream->Read(url_bstr.AllocateBytes(url_size), url_size, &bytes_read); std::wstring url(url_bstr); ChromeFrameUrl cf_url; if (!cf_url.Parse(url)) { DLOG(WARNING) << __FUNCTION__ << " Failed to parse url:" << url; return E_INVALIDARG; } if (!LaunchUrl(cf_url, std::string())) { NOTREACHED() << __FUNCTION__ << " Failed to launch url:" << url; return E_INVALIDARG; } return S_OK; } STDMETHODIMP ChromeActiveDocument::SaveHistory(IStream* stream) { // TODO(sanjeevr): We need to fetch the entire list of navigation entries // from Chrome and persist it in the stream. And in LoadHistory we need to // pass this list back to Chrome which will recreate the list. This will allow // Back-Forward navigation to anchors to work correctly when we navigate to a // page outside of ChromeFrame and then come back. if (!stream) { NOTREACHED(); return E_INVALIDARG; } LARGE_INTEGER offset = {0}; ULARGE_INTEGER new_pos = {0}; DWORD written = 0; std::wstring url = UTF8ToWide(navigation_info_->url.spec()); return stream->Write(url.c_str(), (url.length() + 1) * sizeof(wchar_t), &written); } STDMETHODIMP ChromeActiveDocument::SetPositionCookie(DWORD position_cookie) { if (automation_client_.get()) { int index = static_cast<int>(position_cookie); navigation_info_->navigation_index = index; automation_client_->NavigateToIndex(index); } else { DLOG(WARNING) << "Invalid automation client instance"; } return S_OK; } STDMETHODIMP ChromeActiveDocument::GetPositionCookie(DWORD* position_cookie) { if (!position_cookie) return E_INVALIDARG; *position_cookie = navigation_info_->navigation_index; return S_OK; } STDMETHODIMP ChromeActiveDocument::GetUrlForEvents(BSTR* url) { if (NULL == url) return E_POINTER; *url = ::SysAllocString(url_); return S_OK; } STDMETHODIMP ChromeActiveDocument::GetAddressBarUrl(BSTR* url) { return GetUrlForEvents(url); } STDMETHODIMP ChromeActiveDocument::Reset() { next_privacy_record_ = privacy_info_.privacy_records.begin(); return S_OK; } STDMETHODIMP ChromeActiveDocument::GetSize(DWORD* size) { if (!size) return E_POINTER; *size = privacy_info_.privacy_records.size(); return S_OK; } STDMETHODIMP ChromeActiveDocument::GetPrivacyImpacted(BOOL* privacy_impacted) { if (!privacy_impacted) return E_POINTER; *privacy_impacted = privacy_info_.privacy_impacted; return S_OK; } STDMETHODIMP ChromeActiveDocument::Next(BSTR* url, BSTR* policy, LONG* reserved, DWORD* flags) { if (!url || !policy || !flags) return E_POINTER; if (next_privacy_record_ == privacy_info_.privacy_records.end()) return HRESULT_FROM_WIN32(ERROR_NO_MORE_ITEMS); *url = SysAllocString(next_privacy_record_->first.c_str()); *policy = SysAllocString(next_privacy_record_->second.policy_ref.c_str()); *flags = next_privacy_record_->second.flags; next_privacy_record_++; return S_OK; } bool ChromeActiveDocument::IsSchemeAllowed(const GURL& url) { bool allowed = BaseActiveX::IsSchemeAllowed(url); if (allowed) return true; if (url.SchemeIs(chrome::kAboutScheme)) { if (LowerCaseEqualsASCII(url.spec(), chrome::kAboutPluginsURL)) return true; } return false; } HRESULT ChromeActiveDocument::GetInPlaceFrame( IOleInPlaceFrame** in_place_frame) { DCHECK(in_place_frame); if (in_place_frame_) { *in_place_frame = in_place_frame_.get(); (*in_place_frame)->AddRef(); return S_OK; } else { return S_FALSE; } } HRESULT ChromeActiveDocument::IOleObject_SetClientSite( IOleClientSite* client_site) { if (client_site == NULL) { base::win::ScopedComPtr<IDocHostUIHandler> doc_host_handler; if (doc_site_) doc_host_handler.QueryFrom(doc_site_); if (doc_host_handler.get()) doc_host_handler->HideUI(); doc_site_.Release(); } if (client_site != m_spClientSite) return BaseActiveX::IOleObject_SetClientSite(client_site); return S_OK; } HRESULT ChromeActiveDocument::ActiveXDocActivate(LONG verb) { HRESULT hr = S_OK; m_bNegotiatedWnd = TRUE; if (!m_bInPlaceActive) { hr = m_spInPlaceSite->CanInPlaceActivate(); if (FAILED(hr)) return hr; m_spInPlaceSite->OnInPlaceActivate(); } m_bInPlaceActive = TRUE; // get location in the parent window, // as well as some information about the parent base::win::ScopedComPtr<IOleInPlaceUIWindow> in_place_ui_window; frame_info_.cb = sizeof(OLEINPLACEFRAMEINFO); HWND parent_window = NULL; if (m_spInPlaceSite->GetWindow(&parent_window) == S_OK) { in_place_frame_.Release(); RECT position_rect = {0}; RECT clip_rect = {0}; m_spInPlaceSite->GetWindowContext(in_place_frame_.Receive(), in_place_ui_window.Receive(), &position_rect, &clip_rect, &frame_info_); if (!m_bWndLess) { if (IsWindow()) { ::ShowWindow(m_hWnd, SW_SHOW); SetFocus(); } else { m_hWnd = Create(parent_window, position_rect); if (!IsWindow()) { // This might happen if the automation server couldn't be // instantiated. If so, a NOTREACHED() will have already been hit. DLOG(ERROR) << "Failed to create Ax window"; return AtlHresultFromLastError(); } } } SetObjectRects(&position_rect, &clip_rect); } base::win::ScopedComPtr<IOleInPlaceActiveObject> in_place_active_object(this); // Gone active by now, take care of UIACTIVATE if (DoesVerbUIActivate(verb)) { if (!m_bUIActive) { m_bUIActive = TRUE; hr = m_spInPlaceSite->OnUIActivate(); if (FAILED(hr)) return hr; // set ourselves up in the host if (in_place_active_object) { if (in_place_frame_) in_place_frame_->SetActiveObject(in_place_active_object, NULL); if (in_place_ui_window) in_place_ui_window->SetActiveObject(in_place_active_object, NULL); } } } m_spClientSite->ShowObject(); return S_OK; } void ChromeActiveDocument::OnNavigationStateChanged( int flags, const NavigationInfo& nav_info) { // TODO(joshia): handle INVALIDATE_TYPE_TAB,INVALIDATE_TYPE_LOAD etc. DVLOG(1) << __FUNCTION__ << "\n Flags: " << flags << ", Url: " << nav_info.url << ", Title: " << nav_info.title << ", Type: " << nav_info.navigation_type << ", Relative Offset: " << nav_info.relative_offset << ", Index: " << nav_info.navigation_index; UpdateNavigationState(nav_info, flags); } void ChromeActiveDocument::OnUpdateTargetUrl( const std::wstring& new_target_url) { if (in_place_frame_) in_place_frame_->SetStatusText(new_target_url.c_str()); } bool IsFindAccelerator(const MSG& msg) { // TODO(robertshield): This may not stand up to localization. Fix if this // is the case. return msg.message == WM_KEYDOWN && msg.wParam == 'F' && base::win::IsCtrlPressed() && !(base::win::IsAltPressed() || base::win::IsShiftPressed()); } void ChromeActiveDocument::OnAcceleratorPressed(const MSG& accel_message) { if (::TranslateAccelerator(m_hWnd, accelerator_table_, const_cast<MSG*>(&accel_message))) return; bool handled_accel = false; if (in_place_frame_ != NULL) { handled_accel = (S_OK == in_place_frame_->TranslateAcceleratorW( const_cast<MSG*>(&accel_message), 0)); } if (!handled_accel) { if (IsFindAccelerator(accel_message)) { // Handle the showing of the find dialog explicitly. OnFindInPage(); } else { BaseActiveX::OnAcceleratorPressed(accel_message); } } else { DVLOG(1) << "IE handled accel key " << accel_message.wParam; } } void ChromeActiveDocument::OnTabbedOut(bool reverse) { DVLOG(1) << __FUNCTION__; if (in_place_frame_) { MSG msg = { NULL, WM_KEYDOWN, VK_TAB }; in_place_frame_->TranslateAcceleratorW(&msg, 0); } } void ChromeActiveDocument::OnDidNavigate(const NavigationInfo& nav_info) { DVLOG(1) << __FUNCTION__ << std::endl << "Url: " << nav_info.url << ", Title: " << nav_info.title << ", Type: " << nav_info.navigation_type << ", Relative Offset: " << nav_info.relative_offset << ", Index: " << nav_info.navigation_index; CrashMetricsReporter::GetInstance()->IncrementMetric( CrashMetricsReporter::CHROME_FRAME_NAVIGATION_COUNT); UpdateNavigationState(nav_info, 0); } void ChromeActiveDocument::OnCloseTab() { // Base class will fire DIChromeFrameEvents::onclose. BaseActiveX::OnCloseTab(); // Close the container window. base::win::ScopedComPtr<IWebBrowser2> web_browser2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive()); if (web_browser2) web_browser2->Quit(); } void ChromeActiveDocument::UpdateNavigationState( const NavigationInfo& new_navigation_info, int flags) { // This could be NULL if the active document instance is being destroyed. if (!m_spInPlaceSite) { DVLOG(1) << __FUNCTION__ << "m_spInPlaceSite is NULL. Returning"; return; } HRESULT hr = S_OK; bool is_title_changed = (navigation_info_->title != new_navigation_info.title); bool is_ssl_state_changed = (navigation_info_->security_style != new_navigation_info.security_style) || (navigation_info_->displayed_insecure_content != new_navigation_info.displayed_insecure_content) || (navigation_info_->ran_insecure_content != new_navigation_info.ran_insecure_content); if (is_ssl_state_changed) { int lock_status = SECURELOCK_SET_UNSECURE; switch (new_navigation_info.security_style) { case content::SECURITY_STYLE_AUTHENTICATED: lock_status = new_navigation_info.displayed_insecure_content ? SECURELOCK_SET_MIXED : SECURELOCK_SET_SECUREUNKNOWNBIT; break; default: break; } base::win::ScopedVariant secure_lock_status(lock_status); IEExec(&CGID_ShellDocView, INTERNAL_CMDID_SET_SSL_LOCK, OLECMDEXECOPT_DODEFAULT, secure_lock_status.AsInput(), NULL); } // A number of poorly written bho's crash in their event sink callbacks if // chrome frame is the currently loaded document. This is because they expect // chrome frame to implement interfaces like IHTMLDocument, etc. We patch the // event sink's of these bho's and don't invoke the event sink if chrome // frame is the currently loaded document. if (GetConfigBool(true, kEnableBuggyBhoIntercept)) { base::win::ScopedComPtr<IWebBrowser2> wb2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, wb2.Receive()); if (wb2 && buggy_bho::BuggyBhoTls::GetInstance()) { buggy_bho::BuggyBhoTls::GetInstance()->PatchBuggyBHOs(wb2); } } // Ideally all navigations should come to Chrome Frame so that we can call // BeforeNavigate2 on installed BHOs and give them a chance to cancel the // navigation. However, in practice what happens is as below: // The very first navigation that happens in CF happens via a Load or a // LoadHistory call. In this case, IE already has the correct information for // its travel log as well address bar. For other internal navigations (navs // that only happen within Chrome such as anchor navigations) we need to // update IE's internal state after the fact. In the case of internal // navigations, we notify the BHOs but ignore the should_cancel flag. // Another case where we need to issue BeforeNavigate2 calls is as below:- // We get notified after the fact, when navigations are initiated within // Chrome via window.open calls. These navigations are handled by creating // an external tab container within chrome and then connecting to it from IE. // We still want to update the address bar/history, etc, to ensure that // the special URL used by Chrome to indicate this is updated correctly. ChromeFrameUrl cf_url; bool is_attach_external_tab_url = cf_url.Parse(std::wstring(url_)) && cf_url.attach_to_external_tab(); bool is_internal_navigation = IsNewNavigation(new_navigation_info, flags) || is_attach_external_tab_url; if (new_navigation_info.url.is_valid()) url_.Allocate(UTF8ToWide(new_navigation_info.url.spec()).c_str()); if (is_internal_navigation) { // IE6 does not support tabs. If Chrome sent us a window open request // indicating that the navigation needs to occur in a foreground tab or // a popup window, then we need to ensure that the new window in IE6 is // brought to the foreground. if (GetIEVersion() == IE_6 && is_attach_external_tab_url && (cf_url.disposition() == NEW_FOREGROUND_TAB || cf_url.disposition() == NEW_POPUP)) { base::win::ScopedComPtr<IWebBrowser2> wb2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, wb2.Receive()); if (wb2) BaseActiveX::BringWebBrowserWindowToTop(wb2); } base::win::ScopedComPtr<IDocObjectService> doc_object_svc; base::win::ScopedComPtr<IWebBrowserEventsService> web_browser_events_svc; DoQueryService(__uuidof(web_browser_events_svc), m_spClientSite, web_browser_events_svc.Receive()); if (!web_browser_events_svc.get()) { DoQueryService(SID_SShellBrowser, m_spClientSite, doc_object_svc.Receive()); } // web_browser_events_svc can be NULL on IE6. if (web_browser_events_svc) { VARIANT_BOOL should_cancel = VARIANT_FALSE; web_browser_events_svc->FireBeforeNavigate2Event(&should_cancel); } else if (doc_object_svc) { BOOL should_cancel = FALSE; doc_object_svc->FireBeforeNavigate2(NULL, url_, 0, NULL, NULL, 0, NULL, FALSE, &should_cancel); } // We need to tell IE that we support navigation so that IE will query us // for IPersistHistory and call GetPositionCookie to save our navigation // index. base::win::ScopedVariant html_window(static_cast<IUnknown*>( static_cast<IHTMLWindow2*>(this))); IEExec(&CGID_DocHostCmdPriv, DOCHOST_DOCCANNAVIGATE, 0, html_window.AsInput(), NULL); // We pass the HLNF_INTERNALJUMP flag to INTERNAL_CMDID_FINALIZE_TRAVEL_LOG // since we want to make IE treat all internal navigations within this page // (including anchor navigations and subframe navigations) as anchor // navigations. This will ensure that IE calls GetPositionCookie // to save the current position cookie in the travel log and then call // SetPositionCookie when the user hits Back/Forward to come back here. base::win::ScopedVariant internal_navigation(HLNF_INTERNALJUMP); IEExec(&CGID_Explorer, INTERNAL_CMDID_FINALIZE_TRAVEL_LOG, 0, internal_navigation.AsInput(), NULL); // We no longer need to lie to IE. If we lie persistently to IE, then // IE reuses us for new navigations. IEExec(&CGID_DocHostCmdPriv, DOCHOST_DOCCANNAVIGATE, 0, NULL, NULL); if (doc_object_svc) { // Now call the FireNavigateCompleteEvent which makes IE update the text // in the address-bar. doc_object_svc->FireNavigateComplete2(this, 0); doc_object_svc->FireDocumentComplete(this, 0); } else if (web_browser_events_svc) { web_browser_events_svc->FireNavigateComplete2Event(); web_browser_events_svc->FireDocumentCompleteEvent(); } } if (is_title_changed) { base::win::ScopedVariant title(new_navigation_info.title.c_str()); IEExec(NULL, OLECMDID_SETTITLE, OLECMDEXECOPT_DONTPROMPTUSER, title.AsInput(), NULL); } // There are cases in which we receive NavigationStateChanged events for // provisional loads. These events will contain a new URL but will not be // considered new navigations since their navigation_index is 0. For these // events, do not update the navigation_info_ state, as this will muck up the // travel log when the subsequent committed navigation event takes place. // // Given this filtering, also special-case first navigations since those // are needed to initially populate navigation_info_ to keep it in sync with // what was placed in the IE travel log when CF was first opened. // // Lastly, allow through navigation events that would neither affect the // travel log nor cause the page location to change, as these will // contain informational state (referrer, title, etc.) that we should // preserve. if (is_internal_navigation || IsFirstNavigation(new_navigation_info) || new_navigation_info.url == navigation_info_->url) { // It is important that we only update the navigation_info_ after we have // finalized the travel log. This is because IE will ask for information // such as navigation index when the travel log is finalized and we need // supply the old index and not the new one. *navigation_info_ = new_navigation_info; } // Update the IE zone here. Ideally we would like to do it when the active // document is activated. However that does not work at times as the frame we // get there is not the actual frame which handles the command. IEExec(&CGID_Explorer, SBCMDID_MIXEDZONE, 0, NULL, NULL); } void ChromeActiveDocument::OnFindInPage() { TabProxy* tab = GetTabProxy(); if (tab) { if (!find_dialog_.IsWindow()) find_dialog_.Create(m_hWnd); find_dialog_.ShowWindow(SW_SHOW); } } void ChromeActiveDocument::OnViewSource() { DCHECK(navigation_info_->url.is_valid()); HostNavigate(GURL(content::kViewSourceScheme + std::string(":") + navigation_info_->url.spec()), GURL(), NEW_WINDOW); } void ChromeActiveDocument::OnDetermineSecurityZone(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { // Always return URLZONE_INTERNET since that is the Chrome's behaviour. // Correct step is to use MapUrlToZone(). if (out_args != NULL) { out_args->vt = VT_UI4; out_args->ulVal = URLZONE_INTERNET; } } void ChromeActiveDocument::OnDisplayPrivacyInfo() { privacy_info_ = url_fetcher_->privacy_info(); Reset(); DoPrivacyDlg(m_hWnd, url_, this, TRUE); } void ChromeActiveDocument::OnGetZoomRange(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { if (out_args != NULL) { out_args->vt = VT_I4; out_args->lVal = 0; } } void ChromeActiveDocument::OnSetZoomRange(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { const int kZoomIn = 125; const int kZoomOut = 75; if (in_args && V_VT(in_args) == VT_I4 && IsValid()) { if (in_args->lVal == kZoomIn) { automation_client_->SetZoomLevel(content::PAGE_ZOOM_IN); } else if (in_args->lVal == kZoomOut) { automation_client_->SetZoomLevel(content::PAGE_ZOOM_OUT); } else { DLOG(WARNING) << "Unsupported zoom level:" << in_args->lVal; } } } void ChromeActiveDocument::OnUnload(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { if (IsValid() && out_args) { // If the navigation is attempted to the url loaded in CF, with the only // difference being the addition of an anchor, IE will attempt to unload // the currently loaded document which basically would end up running // unload handlers on the currently loaded document thus rendering it non // functional. We handle this as below:- // The BHO receives the new url in the BeforeNavigate event. // We compare the non anchor portions of the url in the BHO with the loaded // url and if they match, we initiate a Chrome navigation to the url with // the anchor which works nicely. // We don't want to continue processing the unload in this case. // Note:- // IE handles these navigations by querying the loaded document for // IHTMLDocument which then handles the new navigation. That won't work for // us as we don't implement IHTMLDocument. NavigationManager* mgr = NavigationManager::GetThreadInstance(); DLOG_IF(ERROR, !mgr) << "Couldn't get instance of NavigationManager"; if (mgr) { ChromeFrameUrl url; url.Parse(mgr->url()); if (url.gurl().has_ref()) { url_canon::Replacements<char> replacements; replacements.ClearRef(); if (url.gurl().ReplaceComponents(replacements) == GURL(static_cast<BSTR>(url_))) { // We want to reuse the existing automation client and channel for // initiating the new navigation. Setting the // is_automation_client_reused_ flag to true before calling the // LaunchUrl function achieves that. is_automation_client_reused_ = true; LaunchUrl(url, mgr->referrer()); out_args->vt = VT_BOOL; out_args->boolVal = VARIANT_FALSE; return; } } } bool should_unload = true; automation_client_->OnUnload(&should_unload); out_args->vt = VT_BOOL; out_args->boolVal = should_unload ? VARIANT_TRUE : VARIANT_FALSE; } } void ChromeActiveDocument::OnAttachExternalTab( const AttachExternalTabParams& params) { if (!automation_client_.get()) { DLOG(WARNING) << "Invalid automation client instance"; return; } DWORD flags = 0; if (params.user_gesture) flags = NWMF_USERREQUESTED; else if (popup_allowed_) flags = NWMF_USERALLOWED; HRESULT hr = S_OK; if (popup_manager_) { const std::wstring& url_wide = UTF8ToWide(params.url.spec()); hr = popup_manager_->EvaluateNewWindow(url_wide.c_str(), NULL, url_, NULL, FALSE, flags, 0); } // Allow popup if (hr == S_OK) { BaseActiveX::OnAttachExternalTab(params); return; } automation_client_->BlockExternalTab(params.cookie); } bool ChromeActiveDocument::PreProcessContextMenu(HMENU menu) { base::win::ScopedComPtr<IBrowserService> browser_service; base::win::ScopedComPtr<ITravelLog> travel_log; GetBrowserServiceAndTravelLog(browser_service.Receive(), travel_log.Receive()); if (!browser_service || !travel_log) return true; EnableMenuItem(menu, IDC_BACK, MF_BYCOMMAND | (SUCCEEDED(travel_log->GetTravelEntry(browser_service, TLOG_BACK, NULL)) ? MF_ENABLED : MF_DISABLED)); EnableMenuItem(menu, IDC_FORWARD, MF_BYCOMMAND | (SUCCEEDED(travel_log->GetTravelEntry(browser_service, TLOG_FORE, NULL)) ? MF_ENABLED : MF_DISABLED)); // Call base class (adds 'About' item) return BaseActiveX::PreProcessContextMenu(menu); } bool ChromeActiveDocument::HandleContextMenuCommand( UINT cmd, const MiniContextMenuParams& params) { base::win::ScopedComPtr<IWebBrowser2> web_browser2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive()); if (cmd == IDC_BACK) web_browser2->GoBack(); else if (cmd == IDC_FORWARD) web_browser2->GoForward(); else if (cmd == IDC_RELOAD) web_browser2->Refresh(); else return BaseActiveX::HandleContextMenuCommand(cmd, params); return true; } HRESULT ChromeActiveDocument::IEExec(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { HRESULT hr = E_FAIL; base::win::ScopedComPtr<IOleCommandTarget> frame_cmd_target; base::win::ScopedComPtr<IOleInPlaceSite> in_place_site(m_spInPlaceSite); if (!in_place_site.get() && m_spClientSite != NULL) in_place_site.QueryFrom(m_spClientSite); if (in_place_site) hr = frame_cmd_target.QueryFrom(in_place_site); if (frame_cmd_target) { hr = frame_cmd_target->Exec(cmd_group_guid, command_id, cmd_exec_opt, in_args, out_args); } return hr; } bool ChromeActiveDocument::LaunchUrl(const ChromeFrameUrl& cf_url, const std::string& referrer) { DCHECK(!cf_url.gurl().is_empty()); if (!automation_client_.get()) { // http://code.google.com/p/chromium/issues/detail?id=52894 // Still not sure how this happens. DLOG(ERROR) << "No automation client!"; if (!Initialize()) { NOTREACHED() << "...and failed to start a new one >:("; return false; } } document_url_ = cf_url.gurl().spec(); url_.Allocate(UTF8ToWide(cf_url.gurl().spec()).c_str()); if (cf_url.attach_to_external_tab()) { automation_client_->AttachExternalTab(cf_url.cookie()); OnMoveWindow(cf_url.dimensions()); } else if (!automation_client_->InitiateNavigation(cf_url.gurl().spec(), referrer, this)) { DLOG(ERROR) << "Invalid URL: " << url_; Error(L"Invalid URL"); url_.Reset(); return false; } if (is_automation_client_reused_) return true; automation_client_->SetUrlFetcher(url_fetcher_.get()); if (launch_params_) { return automation_client_->Initialize(this, launch_params_); } else { std::wstring profile = UTF8ToWide(cf_url.profile_name()); // If no profile was given, then make use of the host process's name. if (profile.empty()) profile = GetHostProcessName(false); return InitializeAutomation(profile, IsIEInPrivate(), false, cf_url.gurl(), GURL(referrer), false); } } HRESULT ChromeActiveDocument::OnRefreshPage(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { DVLOG(1) << __FUNCTION__; popup_allowed_ = false; if (in_args->vt == VT_I4 && in_args->lVal & OLECMDIDF_REFRESH_PAGEACTION_POPUPWINDOW) { popup_allowed_ = true; // Ask the yellow security band to change the text and icon and to remain // visible. IEExec(&CGID_DocHostCommandHandler, OLECMDID_PAGEACTIONBLOCKED, 0x80000000 | OLECMDIDF_WINDOWSTATE_USERVISIBLE_VALID, NULL, NULL); } NavigationManager* mgr = NavigationManager::GetThreadInstance(); DLOG_IF(ERROR, !mgr) << "Couldn't get instance of NavigationManager"; // If ChromeFrame was activated on this page as a result of a document // received in response to a top level post, then we ask the user for // permission to repost and issue a navigation with the saved post data // which reinitates the whole sequence, i.e. the server receives the top // level post and chrome frame will be reactivated in response. if (mgr && mgr->post_data().type() != VT_EMPTY) { if (MessageBox( SimpleResourceLoader::Get(IDS_HTTP_POST_WARNING).c_str(), SimpleResourceLoader::Get(IDS_HTTP_POST_WARNING_TITLE).c_str(), MB_YESNO | MB_ICONEXCLAMATION) == IDYES) { base::win::ScopedComPtr<IWebBrowser2> web_browser2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive()); DCHECK(web_browser2); VARIANT empty = base::win::ScopedVariant::kEmptyVariant; VARIANT flags = { VT_I4 }; V_I4(&flags) = navNoHistory; return web_browser2->Navigate2(base::win::ScopedVariant(url_).AsInput(), &flags, &empty, const_cast<VARIANT*>(&mgr->post_data()), const_cast<VARIANT*>(&mgr->headers())); } else { return S_OK; } } TabProxy* tab_proxy = GetTabProxy(); if (tab_proxy) { tab_proxy->ReloadAsync(); } else { DLOG(ERROR) << "No automation proxy"; DCHECK(automation_client_.get() != NULL) << "how did it get freed?"; // The current url request manager (url_fetcher_) has been switched to // a stopping state so we need to reset it and get a new one for the new // automation server. ResetUrlRequestManager(); url_fetcher_->set_frame_busting(false); // And now launch the current URL again. This starts a new server process. DCHECK(navigation_info_->url.is_valid()); ChromeFrameUrl cf_url; cf_url.Parse(UTF8ToWide(navigation_info_->url.spec())); LaunchUrl(cf_url, navigation_info_->referrer.spec()); } return S_OK; } HRESULT ChromeActiveDocument::SetPageFontSize(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { if (!automation_client_.get()) { NOTREACHED() << "Invalid automation client"; return E_FAIL; } switch (command_id) { case IDM_BASELINEFONT1: automation_client_->SetPageFontSize(SMALLEST_FONT); break; case IDM_BASELINEFONT2: automation_client_->SetPageFontSize(SMALL_FONT); break; case IDM_BASELINEFONT3: automation_client_->SetPageFontSize(MEDIUM_FONT); break; case IDM_BASELINEFONT4: automation_client_->SetPageFontSize(LARGE_FONT); break; case IDM_BASELINEFONT5: automation_client_->SetPageFontSize(LARGEST_FONT); break; default: NOTREACHED() << "Invalid font size command: " << command_id; return E_FAIL; } // Forward the command back to IEFrame with group set to // CGID_ExplorerBarDoc. This is probably needed to update the menu state to // indicate that the font size was set. This currently fails with error // 0x80040104. // TODO(iyengar) // Do some investigation into why this Exec call fails. IEExec(&CGID_ExplorerBarDoc, command_id, cmd_exec_opt, NULL, NULL); return S_OK; } HRESULT ChromeActiveDocument::OnEncodingChange(const GUID* cmd_group_guid, DWORD command_id, DWORD cmd_exec_opt, VARIANT* in_args, VARIANT* out_args) { const struct EncodingMapData { DWORD ie_encoding_id; const char* chrome_encoding_name; } kEncodingTestDatas[] = { #define DEFINE_ENCODING_MAP(encoding_name, id, chrome_name) \ { encoding_name, chrome_name }, INTERNAL_IE_ENCODINGMENU_IDS(DEFINE_ENCODING_MAP) #undef DEFINE_ENCODING_MAP }; if (!automation_client_.get()) { NOTREACHED() << "Invalid automtion client"; return E_FAIL; } // Using ARRAYSIZE_UNSAFE in here is because we define the struct // EncodingMapData inside function. const char* chrome_encoding_name = NULL; for (int i = 0; i < ARRAYSIZE_UNSAFE(kEncodingTestDatas); ++i) { const struct EncodingMapData* encoding_data = &kEncodingTestDatas[i]; if (command_id == encoding_data->ie_encoding_id) { chrome_encoding_name = encoding_data->chrome_encoding_name; break; } } // Return E_FAIL when encountering invalid encoding id. if (!chrome_encoding_name) return E_FAIL; TabProxy* tab = GetTabProxy(); if (!tab) { NOTREACHED() << "Can not get TabProxy"; return E_FAIL; } if (chrome_encoding_name) tab->OverrideEncoding(chrome_encoding_name); // Like we did on SetPageFontSize, we may forward the command back to IEFrame // to update the menu state to indicate that which encoding was set. // TODO(iyengar) // Do some investigation into why this Exec call fails. IEExec(&CGID_ExplorerBarDoc, command_id, cmd_exec_opt, NULL, NULL); return S_OK; } void ChromeActiveDocument::OnGoToHistoryEntryOffset(int offset) { DVLOG(1) << __FUNCTION__ << " - offset:" << offset; base::win::ScopedComPtr<IBrowserService> browser_service; base::win::ScopedComPtr<ITravelLog> travel_log; GetBrowserServiceAndTravelLog(browser_service.Receive(), travel_log.Receive()); if (browser_service && travel_log) travel_log->Travel(browser_service, offset); } void ChromeActiveDocument::OnMoveWindow(const gfx::Rect& dimensions) { base::win::ScopedComPtr<IWebBrowser2> web_browser2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive()); if (!web_browser2) return; DVLOG(1) << "this:" << this << "\ndimensions: width:" << dimensions.width() << " height:" << dimensions.height(); if (!dimensions.IsEmpty()) { web_browser2->put_MenuBar(VARIANT_FALSE); web_browser2->put_ToolBar(VARIANT_FALSE); int width = dimensions.width(); int height = dimensions.height(); // Compute the size of the browser window given the desired size of the // content area. As per MSDN, the WebBrowser object returns an error from // this method. As a result the code below is best effort. web_browser2->ClientToWindow(&width, &height); web_browser2->put_Width(width); web_browser2->put_Height(height); web_browser2->put_Left(dimensions.x()); web_browser2->put_Top(dimensions.y()); } } HRESULT ChromeActiveDocument::GetBrowserServiceAndTravelLog( IBrowserService** browser_service, ITravelLog** travel_log) { DCHECK(browser_service || travel_log); base::win::ScopedComPtr<IBrowserService> browser_service_local; HRESULT hr = DoQueryService(SID_SShellBrowser, m_spClientSite, browser_service_local.Receive()); if (!browser_service_local) { NOTREACHED() << "DoQueryService for IBrowserService failed: " << hr; return hr; } if (travel_log) { hr = browser_service_local->GetTravelLog(travel_log); DVLOG_IF(1, !travel_log) << "browser_service->GetTravelLog failed: " << hr; } if (browser_service) *browser_service = browser_service_local.Detach(); return hr; } LRESULT ChromeActiveDocument::OnForward(WORD notify_code, WORD id, HWND control_window, BOOL& bHandled) { base::win::ScopedComPtr<IWebBrowser2> web_browser2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive()); DCHECK(web_browser2); if (web_browser2) web_browser2->GoForward(); return 0; } LRESULT ChromeActiveDocument::OnBack(WORD notify_code, WORD id, HWND control_window, BOOL& bHandled) { base::win::ScopedComPtr<IWebBrowser2> web_browser2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive()); DCHECK(web_browser2); if (web_browser2) web_browser2->GoBack(); return 0; } LRESULT ChromeActiveDocument::OnFirePrivacyChange(UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) { if (!m_spClientSite) return 0; base::win::ScopedComPtr<IWebBrowser2> web_browser2; DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive()); if (!web_browser2) { NOTREACHED() << "Failed to retrieve IWebBrowser2 interface."; return 0; } base::win::ScopedComPtr<IShellBrowser> shell_browser; DoQueryService(SID_STopLevelBrowser, web_browser2, shell_browser.Receive()); DCHECK(shell_browser.get() != NULL); base::win::ScopedComPtr<ITridentService2> trident_services; trident_services.QueryFrom(shell_browser); if (trident_services) trident_services->FirePrivacyImpactedStateChange(wparam); else NOTREACHED() << "Failed to retrieve IWebBrowser2 interface."; return 0; } LRESULT ChromeActiveDocument::OnShowWindow(UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) { // NO_LINT if (wparam) SetFocus(); return 0; } LRESULT ChromeActiveDocument::OnSetFocus(UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled) { // NO_LINT if (!ignore_setfocus_) GiveFocusToChrome(false); return 0; } bool ChromeActiveDocument::IsNewNavigation( const NavigationInfo& new_navigation_info, int flags) const { // A new navigation is typically an internal navigation which is initiated by // the renderer(WebKit). Condition 1 below has to be true along with the // any of the other conditions below. // 1. The navigation notification flags passed in as the flags parameter // is not INVALIDATE_TYPE_LOAD which indicates that the loading state of // the tab changed. // 2. The navigation index is greater than 0 which means that a top level // navigation was initiated on the current external tab. // 3. The navigation type has changed. // 4. The url or the referrer are different. if (flags == content::INVALIDATE_TYPE_LOAD) return false; if (new_navigation_info.navigation_index <= 0) return false; if (new_navigation_info.navigation_index == navigation_info_->navigation_index) return false; if (new_navigation_info.navigation_type != navigation_info_->navigation_type) return true; if (new_navigation_info.url != navigation_info_->url) return true; if (new_navigation_info.referrer != navigation_info_->referrer) return true; return false; } bool ChromeActiveDocument::IsFirstNavigation( const NavigationInfo& new_navigation_info) const { return (navigation_info_->url.is_empty() && new_navigation_info.navigation_type == content::NAVIGATION_TYPE_NEW_PAGE); }