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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 CHROME_BROWSER_GTK_TAB_CONTENTS_CONTAINER_GTK_H_
#define CHROME_BROWSER_GTK_TAB_CONTENTS_CONTAINER_GTK_H_
#include <gtk/gtk.h>
#include "base/basictypes.h"
#include "chrome/common/notification_observer.h"
class RenderViewHost;
class StatusBubbleGtk;
class TabContents;
class TabContentsContainerGtk : public NotificationObserver {
public:
explicit TabContentsContainerGtk(StatusBubbleGtk* status_bubble);
~TabContentsContainerGtk();
// Inserts our GtkWidget* hierarchy into a GtkBox managed by our owner.
void AddContainerToBox(GtkWidget* widget);
// Make the specified tab visible.
void SetTabContents(TabContents* tab_contents);
TabContents* GetTabContents() const { return tab_contents_; }
// Remove the tab from the hierarchy.
void DetachTabContents(TabContents* tab_contents);
// NotificationObserver implementation.
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
private:
// Add or remove observers for events that we care about.
void AddObservers();
void RemoveObservers();
// Called when the RenderViewHost of the hosted TabContents has changed, e.g.
// to show an interstitial page.
void RenderViewHostChanged(RenderViewHost* old_host,
RenderViewHost* new_host);
// Called when a TabContents is destroyed. This gives us a chance to clean
// up our internal state if the TabContents is somehow destroyed before we
// get notified.
void TabContentsDestroyed(TabContents* contents);
// Implements our hack around a GtkFixed. The entire size of the GtkFixed is
// allocated to normal tab contents views, while the status bubble is
// informed of its parent and its parent's allocation (it makes a decision
// about layout later.)
static void OnFixedSizeAllocate(
GtkWidget* fixed,
GtkAllocation* allocation,
TabContentsContainerGtk* container);
// The currently visible TabContents.
TabContents* tab_contents_;
// The status bubble manager. Always non-NULL.
StatusBubbleGtk* status_bubble_;
// We keep a GtkFixed which is inserted into this object's owner's GtkWidget
// hierarchy. We then insert and remove TabContents GtkWidgets into this
// fixed_. This should not be a GtkVBox since there were errors with timing
// where the vbox was horizontally split with the top half displaying the
// current TabContents and bottom half displaying the loading page. In
// addition, we need to position the status bubble on top of the currently
// displayed TabContents so we put that in this part of the hierarchy.
GtkWidget* fixed_;
DISALLOW_COPY_AND_ASSIGN(TabContentsContainerGtk);
};
#endif // CHROME_BROWSER_GTK_TAB_CONTENTS_CONTAINER_GTK_H_
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