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/*
* Copyright (C) 2009-2012 Geometer Plus <contact@geometerplus.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <ZLStringUtil.h>
#include <ZLNetworkManager.h>
#include <ZLBase64EncodedImage.h>
#include <ZLNetworkImage.h>
#include "NetworkCatalogUtil.h"
#include "../NetworkLinkCollection.h"
shared_ptr<const ZLImage> NetworkCatalogUtil::getImageByNetworkUrl(const std::string &url, const std::string &prefix) {
if (!ZLStringUtil::stringStartsWith(url, prefix)) {
return 0;
}
return new ZLNetworkImage(ZLMimeType::IMAGE_AUTO, url);
}
shared_ptr<const ZLImage> NetworkCatalogUtil::getImageByDataUrl(const std::string &url) {
if (!ZLStringUtil::stringStartsWith(url, "data:")) {
return 0;
}
std::size_t index = url.find(',');
if (index == std::string::npos) {
return 0;
}
ZLBase64EncodedImage *image = new ZLBase64EncodedImage(ZLMimeType::IMAGE_AUTO);
image->addData(url, index + 1, std::string::npos);
return image;
}
shared_ptr<const ZLImage> NetworkCatalogUtil::getImageByUrl(const std::string &url) {
shared_ptr<const ZLImage> image;
image = getImageByNetworkUrl(url, "http://");
if (!image.isNull()) {
return image;
}
image = getImageByNetworkUrl(url, "https://");
if (!image.isNull()) {
return image;
}
return getImageByDataUrl(url);
}
class NetworkImageDownloadListener : public ZLNetworkRequest::Listener {
public:
NetworkImageDownloadListener(ZLTreeNode *node) : myNode(node) {}
void finished(const std::string &error) {
if (error.empty()) {
myNode->updated();
}
}
private:
ZLTreeNode *myNode;
};
shared_ptr<const ZLImage> NetworkCatalogUtil::getAndDownloadImageByUrl(const std::string &url, const ZLTreeNode *node) {
shared_ptr<const ZLImage> image = getImageByUrl(url);
if (!image.isNull()) {
shared_ptr<ZLNetworkRequest> downloadRequest = image->synchronizationData();
if (!downloadRequest.isNull()) {
downloadRequest->setListener(new NetworkImageDownloadListener(const_cast<ZLTreeNode*>(node)));
ZLNetworkManager::Instance().performAsync(downloadRequest);
}
}
return image;
}
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