Reland r114898: Add TabModalConfirmDialogDelegate.

chrome/browser/ui/gtk/tab_modal_confirm_dialog_gtk.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_GTK_TAB_MODAL_CONFIRM_DIALOG_GTK_H_
+#define CHROME_BROWSER_UI_GTK_TAB_MODAL_CONFIRM_DIALOG_GTK_H_
+#pragma once
+
+#include <gtk/gtk.h>
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/ui/gtk/constrained_window_gtk.h"
+#include "ui/base/gtk/gtk_signal.h"
+
+class TabContentsWrapper;
+class TabModalConfirmDialogDelegate;
+
+// Displays a tab-modal dialog, i.e. a dialog that will block the current page
+// but still allow the user to switch to a different page.
+// To display the dialog, allocate this object on the heap. It will open the
+// dialog from its constructor and then delete itself when the user dismisses
+// the dialog.
+class TabModalConfirmDialogGtk : public ConstrainedWindowGtkDelegate {
+ public:
+  TabModalConfirmDialogGtk(TabModalConfirmDialogDelegate* delegate,
+                           TabContentsWrapper* wrapper);
+
+  // ConstrainedWindowGtkDelegate methods
+  virtual GtkWidget* GetWidgetRoot() OVERRIDE;
+  virtual GtkWidget* GetFocusWidget() OVERRIDE;
+  virtual void DeleteDelegate() OVERRIDE;
+
+ private:
+  virtual ~TabModalConfirmDialogGtk();
+
+  // Callbacks
+  CHROMEGTK_CALLBACK_0(TabModalConfirmDialogGtk, void, OnAccept);
+  CHROMEGTK_CALLBACK_0(TabModalConfirmDialogGtk, void, OnCancel);
+
+  scoped_ptr<TabModalConfirmDialogDelegate> delegate_;
+
+  GtkWidget* dialog_;
+  GtkWidget* ok_;
+  GtkWidget* cancel_;
+
+  DISALLOW_COPY_AND_ASSIGN(TabModalConfirmDialogGtk);
+};
+
+#endif  // CHROME_BROWSER_UI_GTK_TAB_MODAL_CONFIRM_DIALOG_GTK_H_