Add views/examples/widget_example.h.

The example demonstrates how to create a popup widget.

BUG=none
TEST=manually tested on a linux machine.

Review URL: http://codereview.chromium.org/406001



git-svn-id: svn://svn.chromium.org/chrome/trunk/src@32490 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 93 insertions, 1 deletions

diff --git a/views/examples/examples_main.cc b/views/examples/examples_main.cc
index 9aa2adf..badef5c 100644
--- a/views/examples/examples_main.cc
+++ b/views/examples/examples_main.cc
@@ -23,6 +23,7 @@
 #include "views/examples/table2_example.h"
 #endif
 #include "views/examples/textfield_example.h"
+#include "views/examples/widget_example.h"
 #include "views/focus/accelerator_handler.h"
 #include "views/grid_layout.h"
 #include "views/window/window.h"
@@ -78,7 +79,7 @@ void ExamplesMain::Run() {
   layout->AddView(status_label_);
 
   views::Window* window =
-      views::Window::CreateChromeWindow(NULL, gfx::Rect(0, 0, 600, 300), this);
+      views::Window::CreateChromeWindow(NULL, gfx::Rect(0, 0, 700, 300), this);
 
   examples::TextfieldExample textfield_example(this);
   tabbed_pane->AddTab(textfield_example.GetExampleTitle(),
@@ -119,6 +120,10 @@ void ExamplesMain::Run() {
                       table2_example.GetExampleView());
 #endif
 
+  examples::WidgetExample widget_example(this);
+  tabbed_pane->AddTab(widget_example.GetExampleTitle(),
+                      widget_example.GetExampleView());
+
   window->Show();
   views::AcceleratorHandler accelerator_handler;
   MessageLoopForUI::current()->Run(&accelerator_handler);
diff --git a/views/examples/widget_example.h b/views/examples/widget_example.h
new file mode 100644
index 0000000..d7af468
--- /dev/null
+++ b/views/examples/widget_example.h
@@ -0,0 +1,87 @@
+// 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);
+      popup_widget_->Init(NULL, gfx::Rect(100, 100, 200, 300));
+
+      // 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_
+