MacViews: Implement Window-modal dialogs using sheets

ui/views/examples/widget_example.cc

 // 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/views/examples/widget_example.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/views/background.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/label.h"
@@ skipping 12 matching lines @@
 class DialogExample : public DialogDelegateView {
  public:
   DialogExample();
   ~DialogExample() override;
   base::string16 GetWindowTitle() const override;
   View* CreateExtraView() override;
   View* CreateTitlebarExtraView() override;
   View* CreateFootnoteView() override;
 };
 
+class ModalDialogExample : public DialogExample {
+ public:
+  ModalDialogExample() {}
+
+  // WidgetDelegate:
+  ui::ModalType GetModalType() const override { return ui::MODAL_TYPE_WINDOW; }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ModalDialogExample);
+};
+
 DialogExample::DialogExample() {
   set_background(Background::CreateSolidBackground(SK_ColorGRAY));
   SetLayoutManager(new BoxLayout(BoxLayout::kVertical, 10, 10, 10));
   AddChildView(new Label(ASCIIToUTF16("Dialog contents label!")));
 }
 
 DialogExample::~DialogExample() {}
 
 base::string16 DialogExample::GetWindowTitle() const {
   return ASCIIToUTF16("Dialog Widget Example");
@@ skipping 20 matching lines @@
 WidgetExample::WidgetExample() : ExampleBase("Widget") {
 }
 
 WidgetExample::~WidgetExample() {
 }
 
 void WidgetExample::CreateExampleView(View* container) {
   container->SetLayoutManager(new BoxLayout(BoxLayout::kHorizontal, 0, 0, 10));
   BuildButton(container, "Popup widget", POPUP);
   BuildButton(container, "Dialog widget", DIALOG);
+  BuildButton(container, "Modal Dialog", MODAL_DIALOG);
 #if defined(OS_LINUX)
   // Windows does not support TYPE_CONTROL top-level widgets.
   BuildButton(container, "Child widget", CHILD);
 #endif
 }
 
 void WidgetExample::BuildButton(View* container,
                                 const std::string& label,
                                 int tag) {
   LabelButton* button = new LabelButton(this, ASCIIToUTF16(label));
@@ skipping 26 matching lines @@
 void WidgetExample::ButtonPressed(Button* sender, const ui::Event& event) {
   switch (sender->tag()) {
     case POPUP:
       ShowWidget(sender, Widget::InitParams(Widget::InitParams::TYPE_POPUP));
       break;
     case DIALOG: {
       DialogDelegate::CreateDialogWidget(new DialogExample(), NULL,
           sender->GetWidget()->GetNativeView())->Show();
       break;
     }
+    case MODAL_DIALOG: {
+      DialogDelegate::CreateDialogWidget(new ModalDialogExample(), NULL,
+          sender->GetWidget()->GetNativeView())->Show();
+      break;
+    }
     case CHILD:
       ShowWidget(sender, Widget::InitParams(Widget::InitParams::TYPE_CONTROL));
       break;
     case CLOSE_WIDGET:
       sender->GetWidget()->Close();
       break;
   }
 }
 
 }  // namespace examples
 }  // namespace views