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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_shell/launcher/launcher.h"
#include "grit/ui_resources.h"
#include "ui/aura/window.h"
#include "ui/aura_shell/launcher/launcher_model.h"
#include "ui/aura_shell/launcher/launcher_view.h"
#include "ui/aura_shell/shell.h"
#include "ui/aura_shell/shell_delegate.h"
#include "ui/aura_shell/shell_window_ids.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/compositor/layer.h"
#include "ui/gfx/image/image.h"
#include "ui/views/painter.h"
#include "ui/views/widget/widget.h"
namespace aura_shell {
namespace {
// Used to draw the background of the shelf.
class ShelfPainter : public views::Painter {
public:
ShelfPainter() {
ResourceBundle& rb = ResourceBundle::GetSharedInstance();
image_ = *rb.GetImageNamed(IDR_AURA_LAUNCHER_BACKGROUND).ToSkBitmap();
}
virtual void Paint(int w, int h, gfx::Canvas* canvas) OVERRIDE {
canvas->TileImageInt(image_, 0, 0, w, h);
}
private:
SkBitmap image_;
DISALLOW_COPY_AND_ASSIGN(ShelfPainter);
};
} // namespace
// The contents view of the Widget. This view contains LauncherView and
// sizes it to the width of the widget minus the size of the status area.
class Launcher::DelegateView : public views::WidgetDelegateView {
public:
explicit DelegateView();
virtual ~DelegateView();
void SetStatusWidth(int width);
int status_width() const { return status_width_; }
// views::View overrides
virtual gfx::Size GetPreferredSize() OVERRIDE;
virtual void Layout() OVERRIDE;
private:
int status_width_;
DISALLOW_COPY_AND_ASSIGN(DelegateView);
};
Launcher::DelegateView::DelegateView()
: status_width_(0) {
set_background(
views::Background::CreateBackgroundPainter(true, new ShelfPainter()));
}
Launcher::DelegateView::~DelegateView() {
}
void Launcher::DelegateView::SetStatusWidth(int width) {
if (status_width_ == width)
return;
status_width_ = width;
Layout();
}
gfx::Size Launcher::DelegateView::GetPreferredSize() {
return child_count() > 0 ? child_at(0)->GetPreferredSize() : gfx::Size();
}
void Launcher::DelegateView::Layout() {
if (child_count() == 0)
return;
child_at(0)->SetBounds(0, 0, std::max(0, width() - status_width_), height());
}
Launcher::Launcher(aura::Window* window_container)
: widget_(NULL),
window_container_(window_container),
delegate_view_(NULL) {
window_container->AddObserver(this);
model_.reset(new LauncherModel);
widget_ = new views::Widget;
views::Widget::InitParams params(views::Widget::InitParams::TYPE_CONTROL);
params.create_texture_for_layer = true;
params.transparent = true;
params.parent = Shell::GetInstance()->GetContainer(
aura_shell::internal::kShellWindowId_LauncherContainer);
internal::LauncherView* launcher_view =
new internal::LauncherView(model_.get());
launcher_view->Init();
delegate_view_ = new DelegateView;
delegate_view_->AddChildView(launcher_view);
params.delegate = delegate_view_;
widget_->Init(params);
gfx::Size pref = static_cast<views::View*>(launcher_view)->GetPreferredSize();
widget_->SetBounds(gfx::Rect(0, 0, pref.width(), pref.height()));
widget_->SetContentsView(delegate_view_);
widget_->Show();
widget_->GetNativeView()->SetName("LauncherView");
}
Launcher::~Launcher() {
widget_->CloseNow();
window_container_->RemoveObserver(this);
for (WindowMap::iterator i = known_windows_.begin();
i != known_windows_.end(); ++i) {
i->first->RemoveObserver(this);
}
}
void Launcher::SetStatusWidth(int width) {
delegate_view_->SetStatusWidth(width);
}
int Launcher::GetStatusWidth() {
return delegate_view_->status_width();
}
void Launcher::MaybeAdd(aura::Window* window) {
if (known_windows_[window] == true)
return; // We already tried to add this window.
known_windows_[window] = true;
ShellDelegate* delegate = Shell::GetInstance()->delegate();
if (!delegate)
return;
LauncherItem item;
item.window = window;
if (!delegate->ConfigureLauncherItem(&item))
return; // The delegate doesn't want to show this item in the launcher.
model_->Add(model_->items().size(), item);
}
void Launcher::OnWindowAdded(aura::Window* new_window) {
if (new_window->parent() != window_container_)
return;
DCHECK(known_windows_.find(new_window) == known_windows_.end());
known_windows_[new_window] = false;
new_window->AddObserver(this);
// Windows are created initially invisible. Wait until the window is made
// visible before asking, as othewise the delegate likely doesn't know about
// window (it's still creating it).
if (new_window->IsVisible())
MaybeAdd(new_window);
}
void Launcher::OnWillRemoveWindow(aura::Window* window) {
if (window->parent() != window_container_)
return;
window->RemoveObserver(this);
known_windows_.erase(window);
LauncherItems::const_iterator i = model_->ItemByWindow(window);
if (i != model_->items().end())
model_->RemoveItemAt(i - model_->items().begin());
}
void Launcher::OnWindowVisibilityChanged(aura::Window* window,
bool visibile) {
if (visibile && !known_windows_[window])
MaybeAdd(window);
}
} // namespace aura_shell
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