Make scrollbars and other controls tint/untint upon main window gaining

focus on Mac. This entails the following:
  - getting notifications that the main window has become or lost key
    window status (in BrowserWindowController) [new]
  - ... which tells the RenderWidgetHostView(Mac) to (de)activate [new]
  - ... which tells the RenderWidgetHost to (de)activate [new]
  - ... which sends a ViewMsg_SetActive message [new message] to the
    RenderView [new]
  - ... which tells the WebView(Impl) to (de)activate [new]
  - ... which tells its page()'s FocusController to (de)activate [new]
  - ... which is now in WebKit-land.

N.B.: "Activate" is the nomenclature used in WebKit; "focus"/"blur" can
sometimes (kind of) mean the same thing, but is ambiguous, since "focus"
has a more specific meaning.

Added a WebView unit test, which currently only tests to make sure that
SetActive() (and IsActive() [also new]) work correctly. The changes to
the other classes aren't very testable since they don't actually do
anything (other than pass things along).

BUG=12507
TEST=webkit/glue/webkit_unittest.cc


Patch by viettrungluu@gmail.com (see http://codereview.chromium.org/159048 ),
r=avi


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@21284 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 10 insertions, 1 deletions

diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index 22671ce..34a415f 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -423,6 +423,7 @@ void RenderView::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ViewMsg_EnableIntrinsicWidthChangedMode,
                         OnEnableIntrinsicWidthChangedMode)
     IPC_MESSAGE_HANDLER(ViewMsg_SetRendererPrefs, OnSetRendererPrefs)
+    IPC_MESSAGE_HANDLER(ViewMsg_SetActive, OnSetActive)
 
     // Have the super handle all other messages.
     IPC_MESSAGE_UNHANDLED(RenderWidget::OnMessageReceived(message))
@@ -2845,6 +2846,11 @@ void RenderView::OnSetBackground(const SkBitmap& background) {
   SetBackground(background);
 }
 
+void RenderView::OnSetActive(bool active) {
+  if (webview())
+    webview()->SetActive(active);
+}
+
 void RenderView::SendExtensionRequest(const std::string& name,
                                       const std::string& args,
                                       int request_id,
diff --git a/chrome/renderer/render_view.h b/chrome/renderer/render_view.h
index 9d8705a..7624620 100644
--- a/chrome/renderer/render_view.h
+++ b/chrome/renderer/render_view.h
@@ -380,7 +380,6 @@ class RenderView : public RenderWidget,
   // RenderWidget override.
   virtual void OnResize(const gfx::Size& new_size,
                         const gfx::Rect& resizer_rect);
-
   // RenderWidget override
   virtual void DidPaint();
 
@@ -587,6 +586,10 @@ class RenderView : public RenderWidget,
   // a custom background.
   void OnSetBackground(const SkBitmap& background);
 
+  // Activate/deactivate the RenderView (i.e., set its controls' tint
+  // accordingly, etc.).
+  void OnSetActive(bool active);
+
   // Attempt to upload the file that we are trying to process if any.
   // Reset the pending file upload data if the form was successfully
   // posted.