Big restructuring of the RSS code

Dropped Qt 4.4 support

src/rss/rssfolder.cpp

@@ -0,0 +1,303 @@
+/*
+ * Bittorrent Client using Qt4 and libtorrent.
+ * Copyright (C) 2010  Christophe Dumez, Arnaud Demaiziere
+ *
+ * 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.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ *
+ * Contact: chris@qbittorrent.org, arnaud@qbittorrent.org
+ */
+
+#include "rssfolder.h"
+#include "rssarticle.h"
+#include "qbtsession.h"
+#include "downloadthread.h"
+#include "rssmanager.h"
+#include "rssfeed.h"
+
+RssFolder::RssFolder(RssFolder *parent, RssManager *rssmanager, Bittorrent *BTSession, QString name): parent(parent), rssmanager(rssmanager), BTSession(BTSession), name(name) {
+  downloader = new downloadThread(this);
+  connect(downloader, SIGNAL(downloadFinished(QString, QString)), this, SLOT(processFinishedDownload(QString, QString)));
+  connect(downloader, SIGNAL(downloadFailure(QString, QString)), this, SLOT(handleDownloadFailure(QString, QString)));
+}
+
+RssFolder::~RssFolder() {
+  qDebug("Deleting a RSS folder, removing elements");
+  qDeleteAll(this->values());
+  qDebug("Deleting downloader thread");
+  delete downloader;
+  qDebug("Downloader thread removed");
+}
+
+unsigned int RssFolder::getNbUnRead() const {
+  unsigned int nb_unread = 0;
+  foreach(RssFile *file, this->values()) {
+    nb_unread += file->getNbUnRead();
+  }
+  return nb_unread;
+}
+
+RssFile::FileType RssFolder::getType() const {
+  return RssFile::FOLDER;
+}
+
+void RssFolder::refreshAll(){
+  qDebug("Refreshing all rss feeds");
+  const QList<RssFile*> items = this->values();
+  for(int i=0; i<items.size(); ++i) {
+    //foreach(RssFile *item, *this){
+    RssFile *item = items.at(i);
+    if(item->getType() == RssFile::FEED) {
+      RssFeed* stream = (RssFeed*) item;
+      QString url = stream->getUrl();
+      if(stream->isLoading()) return;
+      stream->setLoading(true);
+      downloader->downloadUrl(url);
+      if(!stream->hasCustomIcon()){
+        downloader->downloadUrl(stream->getIconUrl());
+      }
+    } else {
+      RssFolder *folder = (RssFolder*)item;
+      folder->refreshAll();
+    }
+  }
+}
+
+void RssFolder::removeFile(QString ID) {
+  if(this->contains(ID)) {
+    RssFile* child = this->take(ID);
+    child->removeAllSettings();
+    child->removeAllItems();
+    delete child;
+  }
+}
+
+RssFolder* RssFolder::addFolder(QString name) {
+  RssFolder *subfolder;
+  if(!this->contains(name)) {
+    subfolder = new RssFolder(this, rssmanager, BTSession, name);
+    (*this)[name] = subfolder;
+  } else {
+    subfolder = (RssFolder*)this->value(name);
+  }
+  return subfolder;
+}
+
+RssFeed* RssFolder::addStream(QString url) {
+  RssFeed* stream = new RssFeed(this, rssmanager, BTSession, url);
+  Q_ASSERT(!this->contains(stream->getUrl()));
+  (*this)[stream->getUrl()] = stream;
+  refreshStream(stream->getUrl());
+  return stream;
+}
+
+// Refresh All Children
+void RssFolder::refresh() {
+  foreach(RssFile *child, this->values()) {
+    // Little optimization child->refresh() would work too
+    if(child->getType() == RssFile::FEED)
+      refreshStream(child->getID());
+    else
+      child->refresh();
+  }
+}
+
+QList<RssArticle*> RssFolder::getNewsList() const {
+  QList<RssArticle*> news;
+  foreach(RssFile *child, this->values()) {
+    news << child->getNewsList();
+  }
+  return news;
+}
+
+QList<RssArticle*> RssFolder::getUnreadNewsList() const {
+  QList<RssArticle*> unread_news;
+  foreach(RssFile *child, this->values()) {
+    unread_news << child->getUnreadNewsList();
+  }
+  return unread_news;
+}
+
+void RssFolder::refreshStream(QString url) {
+  qDebug("Refreshing feed: %s", url.toLocal8Bit().data());
+  Q_ASSERT(this->contains(url));
+  RssFeed *stream = (RssFeed*)this->value(url);
+  if(stream->isLoading()) {
+    qDebug("Stream %s is already being loaded...", stream->getUrl().toLocal8Bit().data());
+    return;
+  }
+  stream->setLoading(true);
+  qDebug("stream %s : loaded=true", stream->getUrl().toLocal8Bit().data());
+  downloader->downloadUrl(url);
+  if(!stream->hasCustomIcon()){
+    downloader->downloadUrl(stream->getIconUrl());
+  }else{
+    qDebug("No need to download this feed's icon, it was already downloaded");
+  }
+}
+
+QList<RssFile*> RssFolder::getContent() const {
+  return this->values();
+}
+
+unsigned int RssFolder::getNbFeeds() const {
+  unsigned int nbFeeds = 0;
+  foreach(RssFile* item, this->values()) {
+    if(item->getType() == RssFile::FOLDER)
+      nbFeeds += ((RssFolder*)item)->getNbFeeds();
+    else
+      nbFeeds += 1;
+  }
+  return nbFeeds;
+}
+
+void RssFolder::processFinishedDownload(QString url, QString path) {
+  if(url.endsWith("favicon.ico")){
+    // Icon downloaded
+    QImage fileIcon;
+    if(fileIcon.load(path)) {
+      QList<RssFeed*> res = findFeedsWithIcon(url);
+      RssFeed* stream;
+      foreach(stream, res){
+        stream->setIconPath(path);
+        if(!stream->isLoading())
+          rssmanager->forwardFeedIconChanged(stream->getUrl(), stream->getIconPath());
+      }
+    }else{
+      qDebug("Unsupported icon format at %s", (const char*)url.toLocal8Bit());
+    }
+    return;
+  }
+  RssFeed *stream = (RssFeed*)this->value(url, 0);
+  if(!stream){
+    qDebug("This rss stream was deleted in the meantime, nothing to update");
+    return;
+  }
+  stream->processDownloadedFile(path);
+  stream->setLoading(false);
+  qDebug("stream %s : loaded=false", stream->getUrl().toLocal8Bit().data());
+  // If the feed has no alias, then we use the title as Alias
+  // this is more user friendly
+  if(stream->getName().isEmpty()){
+    if(!stream->getTitle().isEmpty())
+      stream->rename(stream->getTitle());
+  }
+  rssmanager->forwardFeedInfosChanged(url, stream->getName(), stream->getNbUnRead());
+}
+
+void RssFolder::handleDownloadFailure(QString url, QString reason) {
+  if(url.endsWith("favicon.ico")){
+    // Icon download failure
+    qDebug("Could not download icon at %s, reason: %s", (const char*)url.toLocal8Bit(), (const char*)reason.toLocal8Bit());
+    return;
+  }
+  RssFeed *stream = (RssFeed*)this->value(url, 0);
+  if(!stream){
+    qDebug("This rss stream was deleted in the meantime, nothing to update");
+    return;
+  }
+  stream->setLoading(false);
+  qDebug("Could not download Rss at %s, reason: %s", (const char*)url.toLocal8Bit(), (const char*)reason.toLocal8Bit());
+  stream->setDownloadFailed();
+  rssmanager->forwardFeedInfosChanged(url, stream->getName(), stream->getNbUnRead());
+}
+
+QList<RssFeed*> RssFolder::findFeedsWithIcon(QString icon_url) const {
+  QList<RssFeed*> res;
+  RssFile* item;
+  foreach(item, this->values()){
+    if(item->getType() == RssFile::FEED && ((RssFeed*)item)->getIconUrl() == icon_url)
+      res << (RssFeed*)item;
+  }
+  return res;
+}
+
+QString RssFolder::getName() const {
+  return name;
+}
+
+void RssFolder::rename(QString new_name) {
+  Q_ASSERT(!parent->contains(new_name));
+  if(!parent->contains(new_name)) {
+    // Update parent
+    (*parent)[new_name] = parent->take(name);
+    // Actually rename
+    name = new_name;
+  }
+}
+
+void RssFolder::markAllAsRead() {
+  foreach(RssFile *item, this->values()) {
+    item->markAllAsRead();
+  }
+}
+
+QList<RssFeed*> RssFolder::getAllFeeds() const {
+  QList<RssFeed*> streams;
+  foreach(RssFile *item, this->values()) {
+    if(item->getType() == RssFile::FEED) {
+      streams << ((RssFeed*)item);
+    } else {
+      foreach(RssFeed* stream, ((RssFolder*)item)->getAllFeeds()) {
+        streams << stream;
+      }
+    }
+  }
+  return streams;
+}
+
+void RssFolder::addFile(RssFile * item) {
+  if(item->getType() == RssFile::FEED) {
+    Q_ASSERT(!this->contains(((RssFeed*)item)->getUrl()));
+    (*this)[((RssFeed*)item)->getUrl()] = item;
+    qDebug("Added feed %s to folder ./%s", ((RssFeed*)item)->getUrl().toLocal8Bit().data(), name.toLocal8Bit().data());
+  } else {
+    Q_ASSERT(!this->contains(((RssFolder*)item)->getName()));
+    (*this)[((RssFolder*)item)->getName()] = item;
+    qDebug("Added folder %s to folder ./%s", ((RssFolder*)item)->getName().toLocal8Bit().data(), name.toLocal8Bit().data());
+  }
+  // Update parent
+  item->setParent(this);
+}
+
+void RssFolder::removeAllItems() {
+  foreach(RssFile* child, values()) {
+    child->removeAllItems();
+  }
+  qDeleteAll(values());
+  clear();
+}
+
+void RssFolder::removeAllSettings() {
+  foreach(RssFile* child, values()) {
+    child->removeAllSettings();
+  }
+}
+
+QString RssFolder::getID() const {
+  return name;
+}
+
+bool RssFolder::hasChild(QString ID) {
+  return this->contains(ID);
+}