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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/dom_ui/dom_ui_thumbnail_source.h"
#include "app/resource_bundle.h"
#include "chrome/browser/profile.h"
#include "chrome/common/url_constants.h"
#include "googleurl/src/gurl.h"
#include "grit/theme_resources.h"
DOMUIThumbnailSource::DOMUIThumbnailSource(Profile* profile)
: DataSource(chrome::kChromeUIThumbnailPath, MessageLoop::current()),
profile_(profile) {
}
void DOMUIThumbnailSource::StartDataRequest(const std::string& path,
int request_id) {
HistoryService* hs = profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
if (hs) {
HistoryService::Handle handle = hs->GetPageThumbnail(
GURL(path),
&cancelable_consumer_,
NewCallback(this, &DOMUIThumbnailSource::OnThumbnailDataAvailable));
// Attach the ChromeURLDataManager request ID to the history request.
cancelable_consumer_.SetClientData(hs, handle, request_id);
} else {
// Tell the caller that no thumbnail is available.
SendResponse(request_id, NULL);
}
}
void DOMUIThumbnailSource::OnThumbnailDataAvailable(
HistoryService::Handle request_handle,
scoped_refptr<RefCountedBytes> data) {
HistoryService* hs =
profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
int request_id = cancelable_consumer_.GetClientData(hs, request_handle);
// Forward the data along to the networking system.
if (data.get() && !data->data.empty()) {
SendResponse(request_id, data);
} else {
if (!default_thumbnail_.get()) {
default_thumbnail_ = new RefCountedBytes;
ResourceBundle::GetSharedInstance().LoadImageResourceBytes(
IDR_DEFAULT_THUMBNAIL, &default_thumbnail_->data);
}
SendResponse(request_id, default_thumbnail_);
}
}
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