views: Add OnEnabledChanged() method to View class.

views/controls/link.cc

 // Copyright (c) 2011 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 "views/controls/link.h"
 
 #include "build/build_config.h"
 
 #if defined(OS_LINUX)
 #include <gdk/gdk.h>
@@ skipping 70 matching lines @@
 
 void Link::Init() {
   GetColors(NULL, &highlighted_color_, &disabled_color_, &normal_color_);
   SetColor(normal_color_);
   ValidateStyle();
 }
 
 Link::~Link() {
 }
 
-void Link::SetEnabled(bool flag) {
-  if (flag != enabled_) {
-    enabled_ = flag;
-    ValidateStyle();
-    SchedulePaint();
-  }
+void Link::OnEnabledChanged() {
+  ValidateStyle();
+  View::OnEnabledChanged();
 }
 
 std::string Link::GetClassName() const {
   return kViewClassName;
 }
 
 gfx::NativeCursor Link::GetCursor(const MouseEvent& event) {
-  if (!enabled_)
+  if (!IsEnabled())
     return NULL;
 #if defined(OS_WIN)
   static HCURSOR g_hand_cursor = LoadCursor(NULL, IDC_HAND);
   return g_hand_cursor;
 #elif defined(OS_LINUX)
   return gfx::GetCursor(GDK_HAND2);
 #endif
 }
 
 bool Link::OnMousePressed(const MouseEvent& event) {
-  if (!enabled_ || (!event.IsLeftMouseButton() && !event.IsMiddleMouseButton()))
+  if (!IsEnabled() ||
+      (!event.IsLeftMouseButton() && !event.IsMiddleMouseButton()))
     return false;
   SetHighlighted(true);
   return true;
 }
 
 bool Link::OnMouseDragged(const MouseEvent& event) {
-  SetHighlighted(enabled_ &&
+  SetHighlighted(IsEnabled() &&
                  (event.IsLeftMouseButton() || event.IsMiddleMouseButton()) &&
                  HitTest(event.location()));
   return true;
 }
 
 void Link::OnMouseReleased(const MouseEvent& event) {
   // Change the highlight first just in case this instance is deleted
   // while calling the controller
   OnMouseCaptureLost();
-  if (enabled_ && (event.IsLeftMouseButton() || event.IsMiddleMouseButton()) &&
+  if (IsEnabled() &&
+      (event.IsLeftMouseButton() || event.IsMiddleMouseButton()) &&
       HitTest(event.location())) {
     // Focus the link on click.
     RequestFocus();
 
     if (listener_)
       listener_->LinkClicked(this, event.flags());
   }
 }
 
 void Link::OnMouseCaptureLost() {
@@ skipping 55 matching lines @@
 
 void Link::SetHighlighted(bool f) {
   if (f != highlighted_) {
     highlighted_ = f;
     ValidateStyle();
     SchedulePaint();
   }
 }
 
 void Link::ValidateStyle() {
-  if (enabled_) {
+  if (IsEnabled()) {
     if (!(font().GetStyle() & gfx::Font::UNDERLINED)) {
       Label::SetFont(
           font().DeriveFont(0, font().GetStyle() | gfx::Font::UNDERLINED));
     }
     Label::SetColor(highlighted_ ? highlighted_color_ : normal_color_);
   } else {
     if (font().GetStyle() & gfx::Font::UNDERLINED) {
       Label::SetFont(
           font().DeriveFont(0, font().GetStyle() & ~gfx::Font::UNDERLINED));
     }
     Label::SetColor(disabled_color_);
   }
 }
 
 }  // namespace views