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

1 files changed, 11 insertions, 0 deletions

diff --git a/webkit/glue/webview_impl.cc b/webkit/glue/webview_impl.cc
index 0556ac8..04c18ef 100644
--- a/webkit/glue/webview_impl.cc
+++ b/webkit/glue/webview_impl.cc
@@ -1796,6 +1796,17 @@ bool WebViewImpl::GetIsTransparent() const {
   return is_transparent_;
 }
 
+void WebViewImpl::SetActive(bool active) {
+  if (page() && page()->focusController())
+    page()->focusController()->setActive(active);
+}
+
+bool WebViewImpl::IsActive() {
+  return (page() && page()->focusController())
+      ? page()->focusController()->isActive()
+      : false;
+}
+
 void WebViewImpl::DidCommitLoad(bool* is_new_navigation) {
   if (is_new_navigation)
     *is_new_navigation = observed_new_navigation_;