Forward simplified mouse events to the RenderViewHostDelegate::View so that it can implementsimple hover / tracking behavior.BUG=crbug.com/12067TEST=none (suggestions welcome)

Review URL: http://codereview.chromium.org/113481

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@16279 0039d316-1c4b-4281-b951-d872f2087c98

6 files changed, 43 insertions, 1 deletions

diff --git a/chrome/browser/renderer_host/render_view_host.cc b/chrome/browser/renderer_host/render_view_host.cc
index 5fee2fb..969c6fa 100644
--- a/chrome/browser/renderer_host/render_view_host.cc
+++ b/chrome/browser/renderer_host/render_view_host.cc
@@ -1371,6 +1371,26 @@ gfx::Rect RenderViewHost::GetRootWindowResizerRect() const {
   return delegate_->GetRootWindowResizerRect();
 }
 
+void RenderViewHost::ForwardMouseEvent(
+    const WebKit::WebMouseEvent& mouse_event) {
+  RenderWidgetHost::ForwardMouseEvent(mouse_event);
+
+  RenderViewHostDelegate::View* view = delegate_->GetViewDelegate();
+  if (view) {
+    switch (mouse_event.type) {
+      case WebInputEvent::MouseMove:
+        view->HandleMouseEvent();
+        break;
+      case WebInputEvent::MouseLeave:
+        view->HandleMouseLeave();
+        break;
+      default:
+        // For now, we don't care about the rest.
+        break;
+    }
+  }
+}
+
 void RenderViewHost::OnDebugDisconnect() {
   if (debugger_attached_) {
     debugger_attached_ = false;
diff --git a/chrome/browser/renderer_host/render_view_host.h b/chrome/browser/renderer_host/render_view_host.h
index b23d63b..5c20c12 100644
--- a/chrome/browser/renderer_host/render_view_host.h
+++ b/chrome/browser/renderer_host/render_view_host.h
@@ -417,6 +417,7 @@ class RenderViewHost : public RenderWidgetHost {
   virtual bool IsRenderView() { return true; }
   virtual void OnMessageReceived(const IPC::Message& msg);
   virtual bool CanBlur() const;
+  virtual void ForwardMouseEvent(const WebKit::WebMouseEvent& mouse_event);
   virtual gfx::Rect GetRootWindowResizerRect() const;
 
   // Creates a new RenderView with the given route id.
diff --git a/chrome/browser/renderer_host/render_view_host_delegate.h b/chrome/browser/renderer_host/render_view_host_delegate.h
index 14c1337..39794de 100644
--- a/chrome/browser/renderer_host/render_view_host_delegate.h
+++ b/chrome/browser/renderer_host/render_view_host_delegate.h
@@ -118,6 +118,11 @@ class RenderViewHostDelegate {
     // event (used for keyboard shortcuts).
     virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) = 0;
 
+    // Notifications about mouse events in this view.  This is useful for
+    // implementing global 'on hover' features external to the view.
+    virtual void HandleMouseEvent() {}
+    virtual void HandleMouseLeave() {}
+
     // The content's intrinsic width (prefWidth) changed.
     virtual void UpdatePreferredWidth(int pref_width) = 0;
   };
diff --git a/chrome/browser/renderer_host/render_widget_host.h b/chrome/browser/renderer_host/render_widget_host.h
index 27cb467..8e12099 100644
--- a/chrome/browser/renderer_host/render_widget_host.h
+++ b/chrome/browser/renderer_host/render_widget_host.h
@@ -211,7 +211,7 @@ class RenderWidgetHost : public IPC::Channel::Listener {
 
   // Forwards the given message to the renderer. These are called by the view
   // when it has received a message.
-  void ForwardMouseEvent(const WebKit::WebMouseEvent& mouse_event);
+  virtual void ForwardMouseEvent(const WebKit::WebMouseEvent& mouse_event);
   void ForwardWheelEvent(const WebKit::WebMouseWheelEvent& wheel_event);
   void ForwardKeyboardEvent(const NativeWebKeyboardEvent& key_event);
 
diff --git a/chrome/browser/tab_contents/interstitial_page.cc b/chrome/browser/tab_contents/interstitial_page.cc
index 04afbbc..f697488 100644
--- a/chrome/browser/tab_contents/interstitial_page.cc
+++ b/chrome/browser/tab_contents/interstitial_page.cc
@@ -85,6 +85,8 @@ class InterstitialPage::InterstitialPageRVHViewDelegate
   virtual void UpdateDragCursor(bool is_drop_target);
   virtual void TakeFocus(bool reverse);
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
+  virtual void HandleMouseEvent();
+  virtual void HandleMouseLeave();
   virtual void OnFindReply(int request_id,
                            int number_of_matches,
                            const gfx::Rect& selection_rect,
@@ -533,6 +535,16 @@ void InterstitialPage::InterstitialPageRVHViewDelegate::HandleKeyboardEvent(
     interstitial_page_->tab()->GetViewDelegate()->HandleKeyboardEvent(event);
 }
 
+void InterstitialPage::InterstitialPageRVHViewDelegate::HandleMouseEvent() {
+  if (interstitial_page_->tab() && interstitial_page_->tab()->GetViewDelegate())
+    interstitial_page_->tab()->GetViewDelegate()->HandleMouseEvent();
+}
+
+void InterstitialPage::InterstitialPageRVHViewDelegate::HandleMouseLeave() {
+  if (interstitial_page_->tab() && interstitial_page_->tab()->GetViewDelegate())
+    interstitial_page_->tab()->GetViewDelegate()->HandleMouseLeave();
+}
+
 void InterstitialPage::InterstitialPageRVHViewDelegate::OnFindReply(
     int request_id, int number_of_matches, const gfx::Rect& selection_rect,
     int active_match_ordinal, bool final_update) {
diff --git a/chrome/browser/tab_contents/tab_contents_view.h b/chrome/browser/tab_contents/tab_contents_view.h
index c5868b0..a7299f1 100644
--- a/chrome/browser/tab_contents/tab_contents_view.h
+++ b/chrome/browser/tab_contents/tab_contents_view.h
@@ -129,6 +129,10 @@ class TabContentsView : public RenderViewHostDelegate::View {
   // invoked, SetInitialFocus is invoked.
   virtual void RestoreFocus() = 0;
 
+  // Simple mouse event forwarding from the RenderViewHost.
+  virtual void HandleMouseEvent() {}
+  virtual void HandleMouseLeave() {}
+
   // Set and return the content's intrinsic width.
   virtual void UpdatePreferredWidth(int pref_width);
   int preferred_width() const {