views: Some more layer change, and add/update some tests for layers.

ui/aura/window.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 "ui/aura/window.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "ui/aura/desktop.h"
@@ skipping 349 matching lines @@
 }
 
 internal::RootWindow* Window::GetRoot() {
   return parent_ ? parent_->GetRoot() : NULL;
 }
 
 void Window::SetVisible(bool visible) {
   bool was_visible = IsVisible();
   layer_->SetVisible(visible);
   bool is_visible = IsVisible();
-  if (was_visible != is_visible)
+  if (was_visible != is_visible) {
     SchedulePaint();
+    if (delegate_)
+      delegate_->OnWindowVisibilityChanged(is_visible);

[oshima, 2011/10/11 00:52:19]

how child layers get notifified visibility change?

[sadrul, 2011/10/11 01:03:18]

Child windows don't get notified of the visibility change. This is the same at
least on GTK (when a toplevel window is hidden, a child widget's "hide" callback
does not trigger).

+  }
 }
 
 void Window::SchedulePaint() {
   SchedulePaintInRect(gfx::Rect(0, 0, bounds().width(), bounds().height()));
 }
 
 bool Window::StopsEventPropagation() const {
   return stops_event_propagation_ && !children_.empty();
 }
 
 bool Window::UpdateShowStateAndRestoreBounds(
     ui::WindowShowState new_show_state) {
   if (show_state_ == new_show_state)
     return false;
   show_state_ = new_show_state;
   if (restore_bounds_.IsEmpty())
     restore_bounds_ = bounds();
   return true;
 }
 
 void Window::OnPaintLayer(gfx::Canvas* canvas) {
   delegate_->OnPaint(canvas);
 }
 
 }  // namespace aura