Tracks changes to zoom icon and zoom percentage. Notifies browser window if the icon should be chan…

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 3694 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, BookmarkTabHelperDelegate implementation:
 
 void Browser::URLStarredChanged(TabContentsWrapper* source, bool starred) {
   if (source == GetSelectedTabContentsWrapper())
     window_->SetStarredState(starred);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
+// Browser, ZoomObserver implementation:
+
+void Browser::OnZoomIconChanged(TabContentsWrapper* source,
+                                ZoomController::ZoomIconState state) {
+  if (source == GetSelectedTabContentsWrapper())
+    window_->SetZoomIconState(state);
+}
+
+void Browser::OnZoomChanged(TabContentsWrapper* source,
+                            int zoom_percent,
+                            bool can_show_bubble) {
+  if (source == GetSelectedTabContentsWrapper()) {
+    window_->SetZoomIconTooltipPercent(zoom_percent);
+
+    // Only show the zoom bubble for zoom changes in the active window.
+    if (can_show_bubble && window_->IsActive())
+      window_->ShowZoomBubble(zoom_percent);
+  }
+}
+
+///////////////////////////////////////////////////////////////////////////////
 // Browser, ExtensionTabHelperDelegate implementation:
 
 void Browser::OnDidGetApplicationInfo(TabContentsWrapper* source,
                                       int32 page_id) {
   if (GetSelectedTabContentsWrapper() != source)
     return;
 
   NavigationEntry* entry =
       source->web_contents()->GetController().GetLastCommittedEntry();
   if (!entry || (entry->GetPageID() != page_id))
@@ skipping 463 matching lines @@
   command_updater_.UpdateCommandEnabled(IDC_RELOAD_IGNORING_CACHE,
                                         CanReloadContents(current_tab));
 
   // Window management commands
   command_updater_.UpdateCommandEnabled(IDC_DUPLICATE_TAB,
       !is_app() && CanDuplicateContentsAt(active_index()));
 
   // Page-related commands
   window_->SetStarredState(
       current_tab_wrapper->bookmark_tab_helper()->is_starred());
+  window_->SetZoomIconState(
+      current_tab_wrapper->zoom_controller()->zoom_icon_state());
+  window_->SetZoomIconTooltipPercent(
+      current_tab_wrapper->zoom_controller()->zoom_percent());
   command_updater_.UpdateCommandEnabled(IDC_VIEW_SOURCE,
       current_tab->GetController().CanViewSource());
   command_updater_.UpdateCommandEnabled(IDC_EMAIL_PAGE_LOCATION,
       toolbar_model_->ShouldDisplayURL() && current_tab->GetURL().is_valid());
   if (is_devtools())
       command_updater_.UpdateCommandEnabled(IDC_OPEN_FILE, false);
 
   // Changing the encoding is not possible on Chrome-internal webpages.
   bool is_chrome_internal = HasInternalURL(nc.GetActiveEntry()) ||
       current_tab->ShowingInterstitialPage();
@@ skipping 476 matching lines @@
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, Assorted utility functions (private):
 
 void Browser::SetAsDelegate(TabContentsWrapper* tab, Browser* delegate) {
   // WebContents...
   tab->web_contents()->SetDelegate(delegate);
 
   // ...and all the helpers.
   tab->blocked_content_tab_helper()->set_delegate(delegate);
   tab->bookmark_tab_helper()->set_delegate(delegate);
+  tab->zoom_controller()->set_observer(delegate);
   tab->constrained_window_tab_helper()->set_delegate(delegate);
   tab->core_tab_helper()->set_delegate(delegate);
   tab->extension_tab_helper()->set_delegate(delegate);
   tab->search_engine_tab_helper()->set_delegate(delegate);
 }
 
 void Browser::FindInPage(bool find_next, bool forward_direction) {
   ShowFindBar();
   if (find_next) {
     string16 find_text;
@@ skipping 417 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;
 }