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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.
#include "chrome/browser/gtk/tab_contents_container_gtk.h"
#include "base/gfx/native_widget_types.h"
#include "chrome/browser/gtk/find_bar_gtk.h"
#include "chrome/browser/tab_contents/web_contents.h"
#include "chrome/browser/renderer_host/render_widget_host_view_gtk.h"
#include "chrome/common/notification_service.h"
TabContentsContainerGtk::TabContentsContainerGtk()
: tab_contents_(NULL),
vbox_(gtk_vbox_new(FALSE, 0)) {
gtk_widget_show_all(vbox_);
}
TabContentsContainerGtk::~TabContentsContainerGtk() {
if (tab_contents_)
RemoveObservers();
}
void TabContentsContainerGtk::AddContainerToBox(GtkWidget* box) {
gtk_box_pack_start(GTK_BOX(box), vbox_, TRUE, TRUE, 0);
}
void TabContentsContainerGtk::SetTabContents(TabContents* tab_contents) {
if (tab_contents_) {
gfx::NativeView widget = tab_contents_->GetNativeView();
if (widget)
gtk_container_remove(GTK_CONTAINER(vbox_), widget);
tab_contents_->WasHidden();
RemoveObservers();
}
tab_contents_ = tab_contents;
// When detaching the last tab of the browser SetTabContents is invoked
// with NULL. Don't attempt to do anything in that case.
if (tab_contents_) {
AddObservers();
gfx::NativeView widget = tab_contents_->GetNativeView();
if (widget) {
gtk_box_pack_end(GTK_BOX(vbox_), widget, TRUE, TRUE, 0);
gtk_widget_show_all(widget);
}
// We need to make sure that the find bar is on top before any painting
// is done.
if (tab_contents_->find_ui_active())
findbar_->AssureOnTop();
}
}
void TabContentsContainerGtk::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
if (type == NotificationType::RENDER_VIEW_HOST_CHANGED) {
RenderViewHostSwitchedDetails* switched_details =
Details<RenderViewHostSwitchedDetails>(details).ptr();
RenderViewHostChanged(switched_details->old_host,
switched_details->new_host);
} else if (type == NotificationType::TAB_CONTENTS_DESTROYED) {
TabContentsDestroyed(Source<TabContents>(source).ptr());
} else {
NOTREACHED();
}
}
void TabContentsContainerGtk::AddObservers() {
DCHECK(tab_contents_);
if (tab_contents_->AsWebContents()) {
// WebContents can change their RenderViewHost and hence the GtkWidget that
// is shown. I'm not entirely sure that we need to observe this event under
// GTK, but am putting a stub implementation and a comment saying that if
// we crash after that NOTIMPLEMENTED(), we'll need it.
NotificationService::current()->AddObserver(
this, NotificationType::RENDER_VIEW_HOST_CHANGED,
Source<NavigationController>(&tab_contents_->controller()));
}
NotificationService::current()->AddObserver(
this,
NotificationType::TAB_CONTENTS_DESTROYED,
Source<TabContents>(tab_contents_));
}
void TabContentsContainerGtk::RemoveObservers() {
DCHECK(tab_contents_);
if (tab_contents_->AsWebContents()) {
NotificationService::current()->RemoveObserver(
this,
NotificationType::RENDER_VIEW_HOST_CHANGED,
Source<NavigationController>(&tab_contents_->controller()));
}
NotificationService::current()->RemoveObserver(
this,
NotificationType::TAB_CONTENTS_DESTROYED,
Source<TabContents>(tab_contents_));
}
void TabContentsContainerGtk::RenderViewHostChanged(RenderViewHost* old_host,
RenderViewHost* new_host) {
// TODO(port): Remove this method and the logic where we subscribe to the
// RENDER_VIEW_HOST_CHANGED notification. This was used on Windows for focus
// issues, and I'm not entirely convinced that this isn't necessary.
}
void TabContentsContainerGtk::TabContentsDestroyed(TabContents* contents) {
// Sometimes, a TabContents is destroyed before we know about it. This allows
// us to clean up our state in case this happens.
DCHECK(contents == tab_contents_);
SetTabContents(NULL);
}
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