Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/browser/instant/instant_loader.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/instant/instant_loader.h"
 
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/instant/instant_controller.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/thumbnails/thumbnail_tab_helper.h"
@@ skipping 86 matching lines @@
 
   // Message from the renderer determining whether it supports the Instant API.
   void OnInstantSupportDetermined(int page_id, bool result);
 
   // Message from the renderer requesting the preview be shown.
   void OnShowInstantPreview(int page_id,
                             InstantShownReason reason,
                             int height,
                             InstantSizeUnits units);
 
+  // Message from the renderer requesting the browser to start capturing user
+  // key strokes.
+  void OnStartCapturingKeyStrokes(int page_id);
+
+  // Message from the renderer requesting the browser to stop capturing user
+  // key strokes.
+  void OnStopCapturingKeyStrokes(int page_id);
+
   void CommitFromPointerReleaseIfNecessary();
   void MaybeSetAndNotifyInstantSupportDetermined(bool supports_instant);
 
   InstantLoader* const loader_;
 
   // True if the mouse or a touch pointer is down from an activate.
   bool is_pointer_down_from_activate_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsDelegateImpl);
 };
@@ skipping 88 matching lines @@
 
 bool InstantLoader::WebContentsDelegateImpl::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WebContentsDelegateImpl, message)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SetSuggestions, OnSetSuggestions)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_InstantSupportDetermined,
                         OnInstantSupportDetermined)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_ShowInstantPreview,
                         OnShowInstantPreview);
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_StartCapturingKeyStrokes,
+                        OnStartCapturingKeyStrokes);
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_StopCapturingKeyStrokes,
+                        OnStopCapturingKeyStrokes);
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void InstantLoader::WebContentsDelegateImpl::OnSetSuggestions(
     int page_id,
     const std::vector<InstantSuggestion>& suggestions) {
   DCHECK(loader_->preview_contents());
   DCHECK(loader_->preview_contents_->web_contents());
@@ skipping 24 matching lines @@
   DCHECK(loader_->preview_contents());
   DCHECK(loader_->preview_contents_->web_contents());
   content::NavigationEntry* entry = loader_->preview_contents_->web_contents()->
                                         GetController().GetActiveEntry();
   if (entry && page_id == entry->GetPageID()) {
     MaybeSetAndNotifyInstantSupportDetermined(true);
     loader_->controller_->ShowInstantPreview(loader_, reason, height, units);
   }
 }
 
+void InstantLoader::WebContentsDelegateImpl::OnStartCapturingKeyStrokes(
+    int page_id) {
+  DCHECK(loader_->preview_contents());
+  DCHECK(loader_->preview_contents_->web_contents());
+  content::NavigationEntry* entry = loader_->preview_contents_->web_contents()->
+                                        GetController().GetActiveEntry();
+  if (entry && page_id == entry->GetPageID()) {
+    MaybeSetAndNotifyInstantSupportDetermined(true);
+    loader_->controller_->StartCapturingKeyStrokes(loader_);
+  }
+}
+
+void InstantLoader::WebContentsDelegateImpl::OnStopCapturingKeyStrokes(
+    int page_id) {
+  DCHECK(loader_->preview_contents());
+  DCHECK(loader_->preview_contents_->web_contents());
+  content::NavigationEntry* entry = loader_->preview_contents_->web_contents()->
+                                        GetController().GetActiveEntry();
+  if (entry && page_id == entry->GetPageID()) {
+    MaybeSetAndNotifyInstantSupportDetermined(true);
+    // NOTE(samarth): we don't do anything else yet in this case.
+  }
+}
+
 void InstantLoader::WebContentsDelegateImpl
     ::CommitFromPointerReleaseIfNecessary() {
   if (is_pointer_down_from_activate_) {
     is_pointer_down_from_activate_ = false;
     loader_->controller_->CommitInstantLoader(loader_);
   }
 }
 
 void InstantLoader::WebContentsDelegateImpl
     ::MaybeSetAndNotifyInstantSupportDetermined(bool supports_instant) {
@@ skipping 200 matching lines @@
                                            content::WebContents* new_contents) {
   DCHECK_EQ(old_contents, preview_contents_->web_contents());
   CleanupPreviewContents();
   // We release here without deleting so that the caller still has the
   // responsibility for deleting the TabContents.
   ignore_result(preview_contents_.release());
   preview_contents_.reset(TabContents::FromWebContents(new_contents));
   SetupPreviewContents();
   controller_->SwappedTabContents(this);
 }