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// Copyright 2013 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/task_manager/guest_resource_provider.h"
#include "base/strings/string16.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/favicon/favicon_tab_helper.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/task_manager/renderer_resource.h"
#include "chrome/browser/task_manager/resource_provider.h"
#include "chrome/browser/task_manager/task_manager.h"
#include "chrome/browser/task_manager/task_manager_util.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_widget_host_iterator.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia.h"
using content::RenderProcessHost;
using content::RenderViewHost;
using content::RenderWidgetHost;
using content::WebContents;
using extensions::Extension;
namespace task_manager {
class GuestResource : public RendererResource {
public:
explicit GuestResource(content::RenderViewHost* render_view_host);
virtual ~GuestResource();
// Resource methods:
virtual Type GetType() const OVERRIDE;
virtual base::string16 GetTitle() const OVERRIDE;
virtual base::string16 GetProfileName() const OVERRIDE;
virtual gfx::ImageSkia GetIcon() const OVERRIDE;
virtual content::WebContents* GetWebContents() const OVERRIDE;
virtual const extensions::Extension* GetExtension() const OVERRIDE;
private:
DISALLOW_COPY_AND_ASSIGN(GuestResource);
};
GuestResource::GuestResource(RenderViewHost* render_view_host)
: RendererResource(
render_view_host->GetSiteInstance()->GetProcess()->GetHandle(),
render_view_host) {
}
GuestResource::~GuestResource() {
}
Resource::Type GuestResource::GetType() const {
return GUEST;
}
base::string16 GuestResource::GetTitle() const {
WebContents* web_contents = GetWebContents();
const int message_id = IDS_TASK_MANAGER_WEBVIEW_TAG_PREFIX;
if (web_contents) {
base::string16 title = util::GetTitleFromWebContents(web_contents);
return l10n_util::GetStringFUTF16(message_id, title);
}
return l10n_util::GetStringFUTF16(message_id, base::string16());
}
base::string16 GuestResource::GetProfileName() const {
WebContents* web_contents = GetWebContents();
if (web_contents) {
Profile* profile = Profile::FromBrowserContext(
web_contents->GetBrowserContext());
return util::GetProfileNameFromInfoCache(profile);
}
return base::string16();
}
gfx::ImageSkia GuestResource::GetIcon() const {
WebContents* web_contents = GetWebContents();
if (web_contents && FaviconTabHelper::FromWebContents(web_contents)) {
return FaviconTabHelper::FromWebContents(web_contents)->
GetFavicon().AsImageSkia();
}
return gfx::ImageSkia();
}
WebContents* GuestResource::GetWebContents() const {
return WebContents::FromRenderViewHost(render_view_host());
}
const Extension* GuestResource::GetExtension() const {
return NULL;
}
GuestResourceProvider::GuestResourceProvider(TaskManager* task_manager)
: updating_(false),
task_manager_(task_manager) {
}
GuestResourceProvider::~GuestResourceProvider() {
}
Resource* GuestResourceProvider::GetResource(
int origin_pid,
int render_process_host_id,
int routing_id) {
// If an origin PID was specified then the request originated in a plugin
// working on the WebContents's behalf, so ignore it.
if (origin_pid)
return NULL;
for (GuestResourceMap::iterator i = resources_.begin();
i != resources_.end(); ++i) {
WebContents* contents = WebContents::FromRenderViewHost(i->first);
if (contents &&
contents->GetRenderProcessHost()->GetID() == render_process_host_id &&
contents->GetRenderViewHost()->GetRoutingID() == routing_id) {
return i->second;
}
}
return NULL;
}
void GuestResourceProvider::StartUpdating() {
DCHECK(!updating_);
updating_ = true;
// Add all the existing guest WebContents.
scoped_ptr<content::RenderWidgetHostIterator> widgets(
RenderWidgetHost::GetRenderWidgetHosts());
while (content::RenderWidgetHost* widget = widgets->GetNextHost()) {
if (widget->IsRenderView()) {
RenderViewHost* rvh = RenderViewHost::From(widget);
WebContents* web_contents = WebContents::FromRenderViewHost(rvh);
if (web_contents->IsSubframe())
Add(rvh);
}
}
// Then we register for notifications to get new guests.
registrar_.Add(this, content::NOTIFICATION_WEB_CONTENTS_CONNECTED,
content::NotificationService::AllBrowserContextsAndSources());
registrar_.Add(this, content::NOTIFICATION_WEB_CONTENTS_DISCONNECTED,
content::NotificationService::AllBrowserContextsAndSources());
}
void GuestResourceProvider::StopUpdating() {
DCHECK(updating_);
updating_ = false;
// Unregister for notifications.
registrar_.Remove(this, content::NOTIFICATION_WEB_CONTENTS_CONNECTED,
content::NotificationService::AllBrowserContextsAndSources());
registrar_.Remove(this, content::NOTIFICATION_WEB_CONTENTS_DISCONNECTED,
content::NotificationService::AllBrowserContextsAndSources());
// Delete all the resources.
STLDeleteContainerPairSecondPointers(resources_.begin(), resources_.end());
resources_.clear();
}
void GuestResourceProvider::Add(RenderViewHost* render_view_host) {
GuestResource* resource = new GuestResource(render_view_host);
resources_[render_view_host] = resource;
task_manager_->AddResource(resource);
}
void GuestResourceProvider::Remove(RenderViewHost* render_view_host) {
if (!updating_)
return;
GuestResourceMap::iterator iter = resources_.find(render_view_host);
if (iter == resources_.end())
return;
GuestResource* resource = iter->second;
task_manager_->RemoveResource(resource);
resources_.erase(iter);
delete resource;
}
void GuestResourceProvider::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
WebContents* web_contents = content::Source<WebContents>(source).ptr();
if (!web_contents || !web_contents->IsSubframe())
return;
switch (type) {
case content::NOTIFICATION_WEB_CONTENTS_CONNECTED:
Add(web_contents->GetRenderViewHost());
break;
case content::NOTIFICATION_WEB_CONTENTS_DISCONNECTED:
Remove(web_contents->GetRenderViewHost());
break;
default:
NOTREACHED() << "Unexpected notification.";
}
}
} // namespace task_manager
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