Zoom Extension API (chrome)

chrome/browser/ui/browser.cc

 // Copyright 2012 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.
 
 #include "chrome/browser/ui/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // defined(OS_WIN)
@@ skipping 32 matching lines @@
 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
 #include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/devtools/devtools_toggle_action.h"
 #include "chrome/browser/devtools/devtools_window.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/download/download_service.h"
 #include "chrome/browser/download/download_service_factory.h"
 #include "chrome/browser/download/download_shelf.h"
+#include "chrome/browser/extensions/api/tabs/tabs_event_router.h"
+#include "chrome/browser/extensions/api/tabs/tabs_windows_api.h"
 #include "chrome/browser/extensions/browser_extension_window_controller.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/file_select_helper.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/history/top_sites.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
@@ skipping 820 matching lines @@
   return OpenURLFromTab(NULL, params);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, TabStripModelObserver implementation:
 
 void Browser::TabInsertedAt(WebContents* contents,
                             int index,
                             bool foreground) {
   SetAsDelegate(contents, this);
+  SetAsObserver(contents);
   SessionTabHelper* session_tab_helper =
       SessionTabHelper::FromWebContents(contents);
   session_tab_helper->SetWindowID(session_id());
 
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_TAB_PARENTED,
       content::Source<content::WebContents>(contents),
       content::NotificationService::NoDetails());
 
   SyncHistoryWithTabs(index);
@@ skipping 23 matching lines @@
       SessionServiceFactory::GetForProfile(profile_);
   if (session_service)
     session_service->TabClosing(contents);
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_TAB_CLOSING,
       content::Source<NavigationController>(&contents->GetController()),
       content::NotificationService::NoDetails());
 
   // Sever the WebContents' connection back to us.
   SetAsDelegate(contents, NULL);
+  ClearAsObserver(contents);
 }
 
 void Browser::TabDetachedAt(WebContents* contents, int index) {
   // TabDetachedAt is called before TabStripModel has updated the
   // active index.
   int old_active_index = tab_strip_model_->active_index();
   if (index < old_active_index && !tab_strip_model_->closing_all()) {
     SessionService* session_service =
         SessionServiceFactory::GetForProfileIfExisting(profile_);
     if (session_service)
@@ skipping 1228 matching lines @@
                  weak_factory_.GetWeakPtr()));
 
   // Return false so the browser does not close.  We'll close if the user
   // confirms in the dialog.
   return false;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, Assorted utility functions (private):
 
+void Browser::SetAsObserver(WebContents* web_contents) {
+  ZoomController::FromWebContents(web_contents)->AddObserver(this);
+}
+
+void Browser::ClearAsObserver(WebContents* web_contents) {
+  ZoomController::FromWebContents(web_contents)->RemoveObserver(this);
+}
+
 void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
   // WebContents...
   web_contents->SetDelegate(delegate);
 
   // ...and all the helpers.
   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
   WebContentsModalDialogManager::FromWebContents(web_contents)->
       SetDelegate(delegate);
   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
   SearchTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
-  ZoomController::FromWebContents(web_contents)->set_observer(delegate);
   ChromeTranslateClient* chrome_translate_client =
       ChromeTranslateClient::FromWebContents(web_contents);
   chrome_translate_client->translate_driver().set_observer(
       delegate ? delegate->translate_driver_observer_.get() : NULL);
 }
 
 void Browser::CloseFrame() {
   window_->Close();
 }
 
 void Browser::TabDetachedAtImpl(content::WebContents* contents,
                                 int index,
                                 DetachType type) {
   if (type == DETACH_TYPE_DETACH) {
     // Save the current location bar state, but only if the tab being detached
     // is the selected tab.  Because saving state can conditionally revert the
     // location bar, saving the current tab's location bar state to a
     // non-selected tab can corrupt both tabs.
     if (contents == tab_strip_model_->GetActiveWebContents()) {
       LocationBar* location_bar = window()->GetLocationBar();
       if (location_bar)
         location_bar->SaveStateToContents(contents);
     }
 
     if (!tab_strip_model_->closing_all())
       SyncHistoryWithTabs(0);
   }
 
   SetAsDelegate(contents, NULL);
+  ClearAsObserver(contents);
   RemoveScheduledUpdatesFor(contents);
 
   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
     find_bar_controller_->ChangeWebContents(NULL);
   }
 
   // Stop observing search model changes for this tab.
   search_delegate_->OnTabDetached(contents);
 
   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
@@ skipping 182 matching lines @@
   if (contents && !allow_js_access) {
     contents->web_contents()->GetController().LoadURL(
         target_url,
         content::Referrer(),
         content::PAGE_TRANSITION_LINK,
         std::string());  // No extra headers.
   }
 
   return contents != NULL;
 }