Add core plumbing for Instant Extended work

chrome/browser/ui/browser.cc

 // Copyright (c) 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  // OS_WIN
@@ skipping 101 matching lines @@
 #include "chrome/browser/ui/fullscreen_controller.h"
 #include "chrome/browser/ui/global_error.h"
 #include "chrome/browser/ui/global_error_service.h"
 #include "chrome/browser/ui/global_error_service_factory.h"
 #include "chrome/browser/ui/hung_plugin_tab_helper.h"
 #include "chrome/browser/ui/intents/web_intent_picker_controller.h"
 #include "chrome/browser/ui/media_stream_infobar_delegate.h"
 #include "chrome/browser/ui/omnibox/location_bar.h"
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_manager.h"
+#include "chrome/browser/ui/search/search.h"
+#include "chrome/browser/ui/search/search_delegate.h"
+#include "chrome/browser/ui/search/search_model.h"
 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 #include "chrome/browser/ui/status_bubble.h"
 #include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/tabs/dock_info.h"
 #include "chrome/browser/ui/tabs/tab_finder.h"
 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/web_applications/web_app_ui.h"
@@ skipping 235 matching lines @@
           tab_restore_service_delegate_(
               new BrowserTabRestoreServiceDelegate(this))),
       ALLOW_THIS_IN_INITIALIZER_LIST(
           synced_window_delegate_(
               new BrowserSyncedWindowDelegate(this))),
       bookmark_bar_state_(BookmarkBar::HIDDEN),
       window_has_shown_(false) {
   tab_strip_model_->AddObserver(this);
 
   toolbar_model_.reset(new ToolbarModel(toolbar_model_delegate_.get()));
+  search_model_.reset(new chrome::search::SearchModel(NULL));
+  search_delegate_.reset(
+      new chrome::search::SearchDelegate(search_model_.get()));
 
   registrar_.Add(this, content::NOTIFICATION_SSL_VISIBLE_STATE_CHANGED,
                  content::NotificationService::AllSources());
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
                  content::Source<Profile>(profile_->GetOriginalProfile()));
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
                  content::Source<Profile>(profile_->GetOriginalProfile()));
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
                  content::Source<Profile>(profile_->GetOriginalProfile()));
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
@@ skipping 2454 matching lines @@
   // Sever the WebContents' connection back to us.
   SetAsDelegate(contents, NULL);
 }
 
 void Browser::TabDetachedAt(TabContents* contents, int index) {
   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
 }
 
 void Browser::TabDeactivated(TabContents* contents) {
   fullscreen_controller_->OnTabDeactivated(contents);
+  search_delegate_->OnTabDeactivated(contents);
+
   if (instant())
     instant()->Hide();
 
   // Save what the user's currently typing, so it can be restored when we
   // switch back to this tab.
   window_->GetLocationBar()->SaveStateToContents(contents->web_contents());
 }
 
 void Browser::ActiveTabChanged(TabContents* old_contents,
                                TabContents* new_contents,
@@ skipping 24 matching lines @@
     Reload(CURRENT_TAB);
   }
 
   // If we have any update pending, do it now.
   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
     ProcessPendingUIUpdates();
 
   // Propagate the profile to the location bar.
   UpdateToolbar(true);
 
+  // Propagate tab state to toolbar, tab-strip, etc.
+  UpdateSearchState(new_contents);
+
   // Update reload/stop state.
   UpdateReloadStopState(new_contents->web_contents()->IsLoading(), true);
 
   // Update commands to reflect current state.
   UpdateCommandsForTabState();
 
   // Reset the status bubble.
   StatusBubble* status_bubble = GetStatusBubble();
   if (status_bubble) {
     status_bubble->Hide();
@@ skipping 1513 matching lines @@
   command_updater_.UpdateCommandEnabled(IDC_STOP, is_loading);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, UI update coalescing and handling (private):
 
 void Browser::UpdateToolbar(bool should_restore_state) {
   window_->UpdateToolbar(GetActiveTabContents(), should_restore_state);
 }
 
+void Browser::UpdateSearchState(TabContents* contents) {
+  if (chrome::search::IsInstantExtendedAPIEnabled(profile_))
+    search_delegate_->OnTabActivated(contents);
+}
+
 void Browser::ScheduleUIUpdate(const WebContents* source,
                                unsigned changed_flags) {
   if (!source)
     return;
 
   // Do some synchronous updates.
   if (changed_flags & content::INVALIDATE_TYPE_URL &&
       source == GetActiveWebContents()) {
     // Only update the URL for the current tab. Note that we do not update
     // the navigation commands since those would have already been updated
@@ skipping 342 matching lines @@
   }
 
   if (is_attempting_to_close_browser_) {
     // If this is the last tab with unload handlers, then ProcessPendingTabs
     // would call back into the TabStripModel (which is invoking this method on
     // us). Avoid that by passing in false so that the call to
     // ProcessPendingTabs is delayed.
     ClearUnloadState(contents->web_contents(), false);
   }
 
+  // Stop observing search model changes for this tab.
+  search_delegate_->OnTabDetached(contents);
+
   registrar_.Remove(this, content::NOTIFICATION_INTERSTITIAL_ATTACHED,
                     content::Source<WebContents>(contents->web_contents()));
   registrar_.Remove(this, content::NOTIFICATION_INTERSTITIAL_DETACHED,
                     content::Source<WebContents>(contents->web_contents()));
   registrar_.Remove(this, content::NOTIFICATION_WEB_CONTENTS_DISCONNECTED,
                     content::Source<WebContents>(contents->web_contents()));
 }
 
 // static
 void Browser::RegisterAppPrefs(const std::string& app_name, Profile* profile) {
@@ skipping 360 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;
 }