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// Copyright (c) 2010 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/views/tab_contents/tab_contents_container.h"
#include "chrome/browser/renderer_host/render_view_host.h"
#include "chrome/browser/renderer_host/render_widget_host_view.h"
#include "chrome/browser/tab_contents/interstitial_page.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/view_ids.h"
#include "chrome/browser/views/tab_contents/native_tab_contents_container.h"
#include "chrome/common/notification_service.h"
#if defined(TOUCH_UI)
#include "chrome/browser/ui/views/tab_contents/native_tab_contents_container_gtk.h"
#include "chrome/browser/ui/views/tab_contents/tab_contents_view_views.h"
#include "views/border.h"
#include "views/fill_layout.h"
#endif
////////////////////////////////////////////////////////////////////////////////
// TabContentsContainer, public:
TabContentsContainer::TabContentsContainer()
: native_container_(NULL),
tab_contents_(NULL),
reserved_area_delegate_(NULL) {
SetID(VIEW_ID_TAB_CONTAINER);
}
TabContentsContainer::~TabContentsContainer() {
if (tab_contents_)
RemoveObservers();
}
void TabContentsContainer::ChangeTabContents(TabContents* contents) {
if (tab_contents_) {
#if !defined(TOUCH_UI)
native_container_->DetachContents(tab_contents_);
#endif
tab_contents_->WasHidden();
RemoveObservers();
}
#if !defined(TOUCH_UI)
TabContents* old_contents = tab_contents_;
#endif
tab_contents_ = contents;
// When detaching the last tab of the browser ChangeTabContents is invoked
// with NULL. Don't attempt to do anything in that case.
if (tab_contents_) {
#if defined(TOUCH_UI)
views::View *v = static_cast<TabContentsViewViews*>(contents->view());
// Guard against re-adding ourselves, which happens because the NULL
// value is ignored by the pre-existing if() above.
if (v->GetParent() != this) {
AddChildView(v);
SetLayoutManager(new views::FillLayout());
Layout();
}
#else
RenderWidgetHostViewChanged(
old_contents ? old_contents->GetRenderWidgetHostView() : NULL,
tab_contents_->GetRenderWidgetHostView());
native_container_->AttachContents(tab_contents_);
#endif
AddObservers();
}
}
void TabContentsContainer::TabContentsFocused(TabContents* tab_contents) {
if (native_container_)
native_container_->TabContentsFocused(tab_contents);
}
void TabContentsContainer::SetFastResize(bool fast_resize) {
if (native_container_)
native_container_->SetFastResize(fast_resize);
}
////////////////////////////////////////////////////////////////////////////////
// TabContentsContainer, NotificationObserver implementation:
void TabContentsContainer::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();
}
}
////////////////////////////////////////////////////////////////////////////////
// TabContentsContainer, View overrides:
void TabContentsContainer::Layout() {
#if defined(TOUCH_UI)
views::View::Layout();
#else
if (native_container_) {
if (reserved_area_delegate_)
reserved_area_delegate_->UpdateReservedContentsRect(this);
native_container_->GetView()->SetBounds(0, 0, width(), height());
native_container_->GetView()->Layout();
}
#endif
}
AccessibilityTypes::Role TabContentsContainer::GetAccessibleRole() {
return AccessibilityTypes::ROLE_WINDOW;
}
void TabContentsContainer::ViewHierarchyChanged(bool is_add,
views::View* parent,
views::View* child) {
#if defined(TOUCH_UI)
views::View::ViewHierarchyChanged(is_add, parent, child);
#else
if (is_add && child == this) {
native_container_ = NativeTabContentsContainer::CreateNativeContainer(this);
AddChildView(native_container_->GetView());
}
#endif
}
////////////////////////////////////////////////////////////////////////////////
// TabContentsContainer, private:
void TabContentsContainer::AddObservers() {
// TabContents can change their RenderViewHost and hence the HWND that is
// shown and getting focused. We need to keep track of that so we install
// the focus subclass on the shown HWND so we intercept focus change events.
registrar_.Add(this,
NotificationType::RENDER_VIEW_HOST_CHANGED,
Source<NavigationController>(&tab_contents_->controller()));
registrar_.Add(this,
NotificationType::TAB_CONTENTS_DESTROYED,
Source<TabContents>(tab_contents_));
}
void TabContentsContainer::RemoveObservers() {
registrar_.RemoveAll();
}
void TabContentsContainer::RenderViewHostChanged(RenderViewHost* old_host,
RenderViewHost* new_host) {
#if defined(TOUCH_UI)
NOTIMPLEMENTED(); // TODO(anicolao)
#else
if (new_host) {
RenderWidgetHostViewChanged(
old_host ? old_host->view() : NULL, new_host->view());
}
native_container_->RenderViewHostChanged(old_host, new_host);
#endif
}
void TabContentsContainer::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_);
ChangeTabContents(NULL);
}
void TabContentsContainer::RenderWidgetHostViewChanged(
RenderWidgetHostView* old_view, RenderWidgetHostView* new_view) {
// Carry over the reserved rect, if possible.
if (old_view && new_view) {
new_view->set_reserved_contents_rect(old_view->reserved_contents_rect());
} else {
if (reserved_area_delegate_)
reserved_area_delegate_->UpdateReservedContentsRect(this);
}
}
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