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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 "ui/wm/core/window_util.h"
#include "ui/aura/window.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_tree_owner.h"
#include "ui/wm/core/transient_window_manager.h"
#include "ui/wm/public/activation_client.h"
namespace {
// Invokes RecreateLayer() on all the children of |to_clone|, adding the newly
// cloned children to |parent|.
//
// WARNING: It is assumed that |parent| is ultimately owned by a LayerTreeOwner.
void CloneChildren(ui::Layer* to_clone, ui::Layer* parent) {
typedef std::vector<ui::Layer*> Layers;
// Make a copy of the children since RecreateLayer() mutates it.
Layers children(to_clone->children());
for (Layers::const_iterator i = children.begin(); i != children.end(); ++i) {
ui::LayerOwner* owner = (*i)->owner();
ui::Layer* old_layer = owner ? owner->RecreateLayer().release() : NULL;
if (old_layer) {
parent->Add(old_layer);
// RecreateLayer() moves the existing children to the new layer. Create a
// copy of those.
CloneChildren(owner->layer(), old_layer);
}
}
}
} // namespace
namespace wm {
void ActivateWindow(aura::Window* window) {
DCHECK(window);
DCHECK(window->GetRootWindow());
aura::client::GetActivationClient(window->GetRootWindow())->ActivateWindow(
window);
}
void DeactivateWindow(aura::Window* window) {
DCHECK(window);
DCHECK(window->GetRootWindow());
aura::client::GetActivationClient(window->GetRootWindow())->DeactivateWindow(
window);
}
bool IsActiveWindow(aura::Window* window) {
DCHECK(window);
if (!window->GetRootWindow())
return false;
aura::client::ActivationClient* client =
aura::client::GetActivationClient(window->GetRootWindow());
return client && client->GetActiveWindow() == window;
}
bool CanActivateWindow(aura::Window* window) {
DCHECK(window);
if (!window->GetRootWindow())
return false;
aura::client::ActivationClient* client =
aura::client::GetActivationClient(window->GetRootWindow());
return client && client->CanActivateWindow(window);
}
aura::Window* GetActivatableWindow(aura::Window* window) {
aura::client::ActivationClient* client =
aura::client::GetActivationClient(window->GetRootWindow());
return client ? client->GetActivatableWindow(window) : NULL;
}
aura::Window* GetToplevelWindow(aura::Window* window) {
aura::client::ActivationClient* client =
aura::client::GetActivationClient(window->GetRootWindow());
return client ? client->GetToplevelWindow(window) : NULL;
}
scoped_ptr<ui::LayerTreeOwner> RecreateLayers(ui::LayerOwner* root) {
scoped_ptr<ui::LayerTreeOwner> old_layer(
new ui::LayerTreeOwner(root->RecreateLayer().release()));
if (old_layer->root())
CloneChildren(root->layer(), old_layer->root());
return old_layer.Pass();
}
aura::Window* GetTransientParent(aura::Window* window) {
return const_cast<aura::Window*>(GetTransientParent(
const_cast<const aura::Window*>(window)));
}
const aura::Window* GetTransientParent(const aura::Window* window) {
const TransientWindowManager* manager = TransientWindowManager::Get(window);
return manager ? manager->transient_parent() : NULL;
}
const std::vector<aura::Window*>& GetTransientChildren(
const aura::Window* window) {
const TransientWindowManager* manager = TransientWindowManager::Get(window);
if (manager)
return manager->transient_children();
static std::vector<aura::Window*>* shared = new std::vector<aura::Window*>;
return *shared;
}
void AddTransientChild(aura::Window* parent, aura::Window* child) {
TransientWindowManager::Get(parent)->AddTransientChild(child);
}
void RemoveTransientChild(aura::Window* parent, aura::Window* child) {
TransientWindowManager::Get(parent)->RemoveTransientChild(child);
}
bool HasTransientAncestor(const aura::Window* window,
const aura::Window* ancestor) {
const aura::Window* transient_parent = GetTransientParent(window);
if (transient_parent == ancestor)
return true;
return transient_parent ?
HasTransientAncestor(transient_parent, ancestor) : false;
}
} // namespace wm
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