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// 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.
#include "chrome/browser/extensions/extension_tab_id_map.h"
#include "content/browser/browser_thread.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "content/browser/renderer_host/render_view_host.h"
#include "content/browser/renderer_host/render_process_host.h"
#include "content/common/notification_registrar.h"
#include "content/common/notification_observer.h"
#include "content/common/notification_service.h"
// ExtensionTabIdMap is a Singleton, so it doesn't need refcounting.
DISABLE_RUNNABLE_METHOD_REFCOUNT(ExtensionTabIdMap);
//
// ExtensionTabIdMap::TabObserver
//
// This class listens for notifications about new and closed tabs on the UI
// thread, and notifies the ExtensionTabIdMap on the IO thread. It should only
// ever be accessed on the UI thread.
class ExtensionTabIdMap::TabObserver : public NotificationObserver {
public:
TabObserver();
~TabObserver();
private:
// NotificationObserver interface.
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
NotificationRegistrar registrar_;
};
ExtensionTabIdMap::TabObserver::TabObserver() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
registrar_.Add(this, NotificationType::RENDER_VIEW_HOST_CREATED_FOR_TAB,
NotificationService::AllSources());
registrar_.Add(this, NotificationType::RENDER_VIEW_HOST_DELETED,
NotificationService::AllSources());
registrar_.Add(this, NotificationType::TAB_PARENTED,
NotificationService::AllSources());
}
ExtensionTabIdMap::TabObserver::~TabObserver() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
void ExtensionTabIdMap::TabObserver::Observe(
NotificationType type, const NotificationSource& source,
const NotificationDetails& details) {
switch (type.value) {
case NotificationType::RENDER_VIEW_HOST_CREATED_FOR_TAB: {
TabContents* contents = Source<TabContents>(source).ptr();
RenderViewHost* host = Details<RenderViewHost>(details).ptr();
// TODO(mpcmoplete): How can we tell if window_id is bogus? It may not
// have been set yet.
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(
ExtensionTabIdMap::GetInstance(),
&ExtensionTabIdMap::SetTabAndWindowId,
host->process()->id(), host->routing_id(),
contents->controller().session_id().id(),
contents->controller().window_id().id()));
break;
}
case NotificationType::TAB_PARENTED: {
NavigationController* controller =
Source<NavigationController>(source).ptr();
RenderViewHost* host = controller->tab_contents()->render_view_host();
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(
ExtensionTabIdMap::GetInstance(),
&ExtensionTabIdMap::SetTabAndWindowId,
host->process()->id(), host->routing_id(),
controller->session_id().id(),
controller->window_id().id()));
break;
}
case NotificationType::RENDER_VIEW_HOST_DELETED: {
RenderViewHost* host = Source<RenderViewHost>(source).ptr();
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(
ExtensionTabIdMap::GetInstance(),
&ExtensionTabIdMap::ClearTabAndWindowId,
host->process()->id(), host->routing_id()));
break;
}
default:
NOTREACHED();
return;
}
}
//
// ExtensionTabIdMap
//
ExtensionTabIdMap::ExtensionTabIdMap() : observer_(NULL) {
}
ExtensionTabIdMap::~ExtensionTabIdMap() {
}
// static
ExtensionTabIdMap* ExtensionTabIdMap::GetInstance() {
return Singleton<ExtensionTabIdMap>::get();
}
void ExtensionTabIdMap::Init() {
observer_ = new TabObserver;
}
void ExtensionTabIdMap::Shutdown() {
delete observer_;
}
void ExtensionTabIdMap::SetTabAndWindowId(
int render_process_host_id, int routing_id, int tab_id, int window_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
RenderId render_id(render_process_host_id, routing_id);
map_[render_id] = TabAndWindowId(tab_id, window_id);
}
void ExtensionTabIdMap::ClearTabAndWindowId(
int render_process_host_id, int routing_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
RenderId render_id(render_process_host_id, routing_id);
map_.erase(render_id);
}
bool ExtensionTabIdMap::GetTabAndWindowId(
int render_process_host_id, int routing_id, int* tab_id, int* window_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
RenderId render_id(render_process_host_id, routing_id);
TabAndWindowIdMap::iterator iter = map_.find(render_id);
if (iter != map_.end()) {
*tab_id = iter->second.first;
*window_id = iter->second.second;
return true;
}
return false;
}
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