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// Copyright (c) 2009 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.
#ifndef VIEWS_EXAMPLES_WIDGET_EXAMPLE_H_
#define VIEWS_EXAMPLES_WIDGET_EXAMPLE_H_
#include "views/background.h"
#include "views/controls/button/text_button.h"
#include "views/examples/example_base.h"
#include "views/fill_layout.h"
#include "views/view.h"
#include "views/widget/root_view.h"
#include "views/widget/widget.h"
namespace examples {
// WidgetExample demonstrates how to create a popup widget.
class WidgetExample : public ExampleBase, public views::ButtonListener {
public:
explicit WidgetExample(ExamplesMain* main) : ExampleBase(main) {
}
virtual ~WidgetExample() {}
virtual std::wstring GetExampleTitle() {
return L"Widget";
}
virtual void CreateExampleView(views::View* container) {
create_button_ = new views::TextButton(this, L"Create a popup widget");
container->SetLayoutManager(new views::FillLayout);
container->AddChildView(create_button_);
// We'll create close_button_ and popup_widget_, when the create button
// is clicked.
close_button_ = NULL;
popup_widget_ = NULL;
}
private:
// ButtonListner implementation.
virtual void ButtonPressed(views::Button* sender, const views::Event& event) {
if (sender == create_button_) {
// Disable the create button.
create_button_->SetEnabled(false);
// Create a popup widget.
popup_widget_ = views::Widget::CreatePopupWidget(
views::Widget::NotTransparent,
views::Widget::AcceptEvents,
views::Widget::DeleteOnDestroy);
// Compute where to place the popup widget.
// We'll place it right below the create_button_.
gfx::Point point = create_button_->GetPosition();
// The position in point is relative to the parent. Make it absolute.
views::View::ConvertPointToScreen(create_button_, &point);
// Add the height of create_button_.
point.Offset(0, create_button_->size().height());
gfx::Rect bounds(point.x(), point.y(), 200, 300);
// Initialize the popup widget with the computed bounds.
popup_widget_->Init(NULL, bounds);
// Add a button to close the popup widget.
close_button_ = new views::TextButton(this, L"Close");
views::View* widget_container = new views::View;
widget_container->SetLayoutManager(new views::FillLayout);
widget_container->set_background(
views::Background::CreateStandardPanelBackground());
widget_container->AddChildView(close_button_);
popup_widget_->GetRootView()->SetContentsView(widget_container);
// Show the popup widget.
popup_widget_->Show();
} else if (sender == close_button_) {
// Close the popup widget. This will delete popup_widget_ as
// DeleteOnDestroy is specified when the widget was created.
// Views on the widget will also be deleted.
popup_widget_->Close();
// Re-enable the create button.
create_button_->SetEnabled(true);
close_button_ = NULL;
popup_widget_ = NULL;
}
}
views::TextButton* create_button_;
views::TextButton* close_button_;
views::Widget* popup_widget_;
DISALLOW_COPY_AND_ASSIGN(WidgetExample);
};
} // namespace examples
#endif // VIEWS_EXAMPLES_WIDGET_EXAMPLE_H_
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