Zoom Extension API (chrome)

chrome/browser/guest_view/web_view/web_view_guest.cc

 // Copyright 2014 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/guest_view/web_view/web_view_guest.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/extensions/api/web_request/web_request_api.h"
 #include "chrome/browser/extensions/api/web_view/web_view_internal_api.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/extensions/menu_manager.h"
 #include "chrome/browser/extensions/script_executor.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/geolocation/geolocation_permission_context.h"
 #include "chrome/browser/geolocation/geolocation_permission_context_factory.h"
 #include "chrome/browser/guest_view/guest_view_constants.h"
 #include "chrome/browser/guest_view/guest_view_manager.h"
 #include "chrome/browser/guest_view/web_view/web_view_constants.h"
 #include "chrome/browser/guest_view/web_view/web_view_permission_types.h"
 #include "chrome/browser/guest_view/web_view/web_view_renderer_state.h"
 #include "chrome/browser/renderer_context_menu/context_menu_delegate.h"
 #include "chrome/browser/renderer_context_menu/render_view_context_menu.h"
 #include "chrome/browser/ui/pdf/pdf_tab_helper.h"
+#include "chrome/browser/ui/zoom/zoom_controller.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/render_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
-#include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_request_details.h"
 #include "content/public/browser/site_instance.h"
@@ skipping 114 matching lines @@
     int view_instance_id) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
   ExtensionWebRequestEventRouter::GetInstance()->RemoveWebViewEventListeners(
       profile,
       extension_id,
       embedder_process_id,
       view_instance_id);
 }
 
 void AttachWebViewHelpers(WebContents* contents) {
+  // Create a zoom controller for the guest contents give it access to
+  // GetZoomLevel() and and SetZoomLevel() in WebViewGuest.
+  // TODO(wjmaclean) This currently uses the same HostZoomMap as the browser
+  // context, but we eventually want to isolate the guest contents from zoom
+  // changes outside the guest (e.g. in the main browser), so we should
+  // create a separate HostZoomMap for the guest.
+  ZoomController::CreateForWebContents(contents);
+
   FaviconTabHelper::CreateForWebContents(contents);
   extensions::ChromeExtensionWebContentsObserver::CreateForWebContents(
       contents);
 #if defined(ENABLE_PLUGINS) && !defined(OS_ANDROID)
   PluginPermissionHelper::CreateForWebContents(contents);
 #endif
 #if defined(ENABLE_PRINTING)
 #if defined(ENABLE_FULL_PRINTING)
   printing::PrintViewManager::CreateForWebContents(contents);
   printing::PrintPreviewMessageHandler::CreateForWebContents(contents);
@@ skipping 844 matching lines @@
   args->SetInteger(webview::kInternalCurrentEntryIndex,
       guest_web_contents()->GetController().GetCurrentEntryIndex());
   args->SetInteger(webview::kInternalEntryCount,
       guest_web_contents()->GetController().GetEntryCount());
   args->SetInteger(webview::kInternalProcessId,
       guest_web_contents()->GetRenderProcessHost()->GetID());
   DispatchEvent(
       new GuestViewBase::Event(webview::kEventLoadCommit, args.Pass()));
 
   // Update the current zoom factor for the new page.
-  current_zoom_factor_ = content::ZoomLevelToZoomFactor(
-      content::HostZoomMap::GetZoomLevel(guest_web_contents()));
+  ZoomController* zoom_controller =
+      ZoomController::FromWebContents(guest_web_contents());
+  DCHECK(zoom_controller);
+  current_zoom_factor_ = zoom_controller->GetZoomLevel();
 
   if (!render_frame_host->GetParent()) {
     chromevox_injected_ = false;
     main_frame_id_ = render_frame_host->GetRoutingID();
   }
 }
 
 void WebViewGuest::DidFailProvisionalLoad(
     content::RenderFrameHost* render_frame_host,
     const GURL& validated_url,
@@ skipping 434 matching lines @@
 
 void WebViewGuest::SetName(const std::string& name) {
   if (name_ == name)
     return;
   name_ = name;
 
   Send(new ChromeViewMsg_SetName(routing_id(), name_));
 }
 
 void WebViewGuest::SetZoom(double zoom_factor) {
+  ZoomController* zoom_controller =
+      ZoomController::FromWebContents(guest_web_contents());
+  DCHECK(zoom_controller);
   double zoom_level = content::ZoomFactorToZoomLevel(zoom_factor);
-  content::HostZoomMap::SetZoomLevel(guest_web_contents(), zoom_level);
+  zoom_controller->SetZoomLevel(zoom_level);
 
   scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
   args->SetDouble(webview::kOldZoomFactor, current_zoom_factor_);
   args->SetDouble(webview::kNewZoomFactor, zoom_factor);
   DispatchEvent(
       new GuestViewBase::Event(webview::kEventZoomChange, args.Pass()));
 
   current_zoom_factor_ = zoom_factor;
 }
 
@@ skipping 147 matching lines @@
     bool allow,
     const std::string& user_input) {
   WebViewGuest* guest =
       WebViewGuest::From(embedder_render_process_id(), new_window_instance_id);
   if (!guest)
     return;
 
   if (!allow)
     guest->Destroy();
 }