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

4 files changed, 46 insertions, 0 deletions

diff --git a/webkit/glue/webview.h b/webkit/glue/webview.h
index 81d0094..565143d 100644
--- a/webkit/glue/webview.h
+++ b/webkit/glue/webview.h
@@ -230,6 +230,12 @@ class WebView : public WebKit::WebWidget {
   virtual void SetIsTransparent(bool is_transparent) = 0;
   virtual bool GetIsTransparent() const = 0;
 
+  // Updates the WebView's active state (i.e., control tints).
+  virtual void SetActive(bool active) = 0;
+
+  // Gets the WebView's active state (i.e., state of control tints).
+  virtual bool IsActive() = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(WebView);
 };
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_;
diff --git a/webkit/glue/webview_impl.h b/webkit/glue/webview_impl.h
index 6c2f883..92dd080 100644
--- a/webkit/glue/webview_impl.h
+++ b/webkit/glue/webview_impl.h
@@ -131,6 +131,9 @@ class WebViewImpl : public WebView, public base::RefCounted<WebViewImpl> {
   virtual void SetIsTransparent(bool is_transparent);
   virtual bool GetIsTransparent() const;
 
+  virtual void SetActive(bool active);
+  virtual bool IsActive();
+
   // WebViewImpl
 
   const WebKit::WebPoint& last_mouse_down_point() const {
diff --git a/webkit/glue/webview_unittest.cc b/webkit/glue/webview_unittest.cc
new file mode 100644
index 0000000..c3ae5c2
--- /dev/null
+++ b/webkit/glue/webview_unittest.cc
@@ -0,0 +1,26 @@
+// Copyright (c) 2006-2008 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 "testing/gtest/include/gtest/gtest.h"
+#include "webkit/glue/webview.h"
+#include "webkit/tools/test_shell/test_shell_test.h"
+
+class WebViewTest : public TestShellTest {
+};
+
+TEST_F(WebViewTest, GetContentAsPlainText) {
+  WebView* view = test_shell_->webView();
+  ASSERT_TRUE(view != 0);
+
+  view->SetActive(true);
+  EXPECT_TRUE(view->IsActive());
+
+  view->SetActive(false);
+  EXPECT_FALSE(view->IsActive());
+
+  view->SetActive(true);
+  EXPECT_TRUE(view->IsActive());
+}
+
+// TODO(viettrungluu): add more tests