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// Copyright (c) 2012 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/search/thumbnail_source.h"
#include "base/callback.h"
#include "base/memory/ref_counted_memory.h"
#include "base/message_loop/message_loop.h"
#include "chrome/browser/search/instant_io_context.h"
#include "chrome/browser/thumbnails/thumbnail_service.h"
#include "chrome/browser/thumbnails/thumbnail_service_factory.h"
#include "chrome/common/url_constants.h"
#include "net/url_request/url_request.h"
#include "url/gurl.h"
// Set ThumbnailService now as Profile isn't thread safe.
ThumbnailSource::ThumbnailSource(Profile* profile, bool capture_thumbnails)
: thumbnail_service_(ThumbnailServiceFactory::GetForProfile(profile)),
capture_thumbnails_(capture_thumbnails) {
}
ThumbnailSource::~ThumbnailSource() {
}
std::string ThumbnailSource::GetSource() const {
return capture_thumbnails_ ?
chrome::kChromeUIThumbnailHost2 : chrome::kChromeUIThumbnailHost;
}
void ThumbnailSource::StartDataRequest(
const std::string& path,
int render_process_id,
int render_frame_id,
const content::URLDataSource::GotDataCallback& callback) {
scoped_refptr<base::RefCountedMemory> data;
if (thumbnail_service_->GetPageThumbnail(GURL(path), capture_thumbnails_,
&data)) {
// We have the thumbnail.
callback.Run(data.get());
} else {
callback.Run(default_thumbnail_.get());
}
if (capture_thumbnails_)
thumbnail_service_->AddForcedURL(GURL(path));
}
std::string ThumbnailSource::GetMimeType(const std::string&) const {
// We need to explicitly return a mime type, otherwise if the user tries to
// drag the image they get no extension.
return "image/png";
}
base::MessageLoop* ThumbnailSource::MessageLoopForRequestPath(
const std::string& path) const {
// TopSites can be accessed from the IO thread.
return thumbnail_service_.get() ?
NULL : content::URLDataSource::MessageLoopForRequestPath(path);
}
bool ThumbnailSource::ShouldServiceRequest(
const net::URLRequest* request) const {
if (request->url().SchemeIs(chrome::kChromeSearchScheme))
return InstantIOContext::ShouldServiceRequest(request);
return URLDataSource::ShouldServiceRequest(request);
}
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