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// Copyright (c) 2012 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 "ash/wm/resize_shadow_controller.h"
#include <utility>
#include "ash/wm/resize_shadow.h"
#include "ui/aura/window.h"
namespace ash {
namespace internal {
ResizeShadowController::ResizeShadowController() {
}
ResizeShadowController::~ResizeShadowController() {
for (WindowShadowMap::const_iterator it = window_shadows_.begin();
it != window_shadows_.end(); ++it) {
it->first->RemoveObserver(this);
}
}
void ResizeShadowController::ShowShadow(aura::Window* window, int hit_test) {
ResizeShadow* shadow = GetShadowForWindow(window);
if (!shadow)
shadow = CreateShadow(window);
shadow->ShowForHitTest(hit_test);
}
void ResizeShadowController::HideShadow(aura::Window* window) {
ResizeShadow* shadow = GetShadowForWindow(window);
if (shadow)
shadow->Hide();
}
void ResizeShadowController::OnWindowBoundsChanged(aura::Window* window,
const gfx::Rect& bounds) {
ResizeShadow* shadow = GetShadowForWindow(window);
if (shadow)
shadow->Layout(bounds);
}
void ResizeShadowController::OnWindowDestroyed(aura::Window* window) {
window_shadows_.erase(window);
}
ResizeShadow* ResizeShadowController::CreateShadow(aura::Window* window) {
linked_ptr<ResizeShadow> shadow(new ResizeShadow());
window_shadows_.insert(std::make_pair(window, shadow));
// Attach the layers to this window.
shadow->Init(window);
// Ensure initial bounds are correct.
shadow->Layout(window->bounds());
// Watch for bounds changes.
window->AddObserver(this);
return shadow.get();
}
ResizeShadow* ResizeShadowController::GetShadowForWindow(aura::Window* window) {
WindowShadowMap::const_iterator it = window_shadows_.find(window);
return it != window_shadows_.end() ? it->second.get() : NULL;
}
} // namespace internal
} // namespace ash
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