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// 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/desktop.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "ui/aura/desktop_delegate.h"
#include "ui/aura/desktop_host.h"
#include "ui/aura/focus_manager.h"
#include "ui/aura/root_window.h"
#include "ui/aura/toplevel_window_container.h"
#include "ui/aura/window.h"
#include "ui/aura/window_delegate.h"
#include "ui/gfx/compositor/compositor.h"
#include "ui/gfx/compositor/layer.h"
namespace aura {
// static
Desktop* Desktop::instance_ = NULL;
// static
ui::Compositor*(*Desktop::compositor_factory_)() = NULL;
Desktop::Desktop()
: delegate_(NULL),
host_(aura::DesktopHost::Create(gfx::Rect(200, 200, 1280, 1024))),
ALLOW_THIS_IN_INITIALIZER_LIST(schedule_paint_(this)),
active_window_(NULL),
in_destructor_(false) {
if (compositor_factory_) {
compositor_ = (*Desktop::compositor_factory())();
} else {
compositor_ = ui::Compositor::Create(this, host_->GetAcceleratedWidget(),
host_->GetSize());
}
host_->SetDesktop(this);
DCHECK(compositor_.get());
window_.reset(new internal::RootWindow);
}
Desktop::~Desktop() {
in_destructor_ = true;
if (instance_ == this)
instance_ = NULL;
}
void Desktop::SetDelegate(DesktopDelegate* delegate) {
delegate_.reset(delegate);
}
void Desktop::Init() {
window_->Init();
window_->SetBounds(gfx::Rect(gfx::Point(), host_->GetSize()));
window_->Show();
compositor()->SetRootLayer(window_->layer());
}
void Desktop::Show() {
host_->Show();
}
void Desktop::SetSize(const gfx::Size& size) {
host_->SetSize(size);
}
gfx::Size Desktop::GetSize() const {
return host_->GetSize();
}
void Desktop::SetCursor(gfx::NativeCursor cursor) {
host_->SetCursor(cursor);
}
void Desktop::Run() {
Show();
MessageLoopForUI::current()->Run(host_.get());
}
void Desktop::Draw() {
compositor_->Draw(false);
}
bool Desktop::OnMouseEvent(const MouseEvent& event) {
return window_->HandleMouseEvent(event);
}
bool Desktop::OnKeyEvent(const KeyEvent& event) {
return window_->HandleKeyEvent(event);
}
void Desktop::OnHostResized(const gfx::Size& size) {
gfx::Rect bounds(0, 0, size.width(), size.height());
compositor_->WidgetSizeChanged(size);
window_->SetBounds(bounds);
}
void Desktop::ScheduleDraw() {
if (schedule_paint_.empty()) {
MessageLoop::current()->PostTask(FROM_HERE,
schedule_paint_.NewRunnableMethod(&Desktop::Draw));
}
}
void Desktop::SetActiveWindow(Window* window, Window* to_focus) {
// We only allow top level windows to be active.
if (window && window != window->GetToplevelWindow()) {
// Ignore requests to activate windows that aren't in a top level window.
return;
}
if (active_window_ == window)
return;
if (active_window_ && active_window_->delegate())
active_window_->delegate()->OnLostActive();
active_window_ = window;
if (active_window_) {
active_window_->parent()->MoveChildToFront(active_window_);
if (active_window_->delegate())
active_window_->delegate()->OnActivated();
active_window_->GetFocusManager()->SetFocusedWindow(
to_focus ? to_focus : active_window_);
}
}
void Desktop::ActivateTopmostWindow() {
SetActiveWindow(delegate_->GetTopmostWindowToActivate(NULL), NULL);
}
void Desktop::Deactivate(Window* window) {
if (!window)
return;
Window* toplevel_ancestor = window->GetToplevelWindow();
if (!toplevel_ancestor || toplevel_ancestor != window)
return; // Not a top level window.
if (active_window() != toplevel_ancestor)
return; // Top level ancestor is already not active.
Window* to_activate =
delegate_->GetTopmostWindowToActivate(toplevel_ancestor);
if (to_activate)
SetActiveWindow(to_activate, NULL);
}
void Desktop::WindowDestroying(Window* window) {
if (in_destructor_ || window != active_window_)
return;
// Reset active_window_ before invoking SetActiveWindow so that we don't
// attempt to notify it while running its destructor.
active_window_ = NULL;
SetActiveWindow(delegate_->GetTopmostWindowToActivate(window), NULL);
}
MessageLoop::Dispatcher* Desktop::GetDispatcher() {
return host_.get();
}
// static
Desktop* Desktop::GetInstance() {
if (!instance_) {
instance_ = new Desktop;
instance_->Init();
}
return instance_;
}
} // namespace aura
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