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305 lines
7.5 KiB
305 lines
7.5 KiB
/*
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This file is part of Akregator.
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Copyright (C) 2005 Frank Osterfeld <frank.osterfeld at kdemail.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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As a special exception, permission is given to link this program
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with any edition of Qt, and distribute the resulting executable,
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without including the source code for Qt in the source distribution.
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*/
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#include "article.h"
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#include "articlefilter.h"
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#include "fetchqueue.h"
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#include "folder.h"
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#include "tag.h"
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#include "tagnode.h"
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#include "treenode.h"
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#include "treenodevisitor.h"
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#include <qdom.h>
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#include <qstring.h>
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#include <qvaluelist.h>
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namespace Akregator {
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class TagNode::TagNodePrivate
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{
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public:
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Filters::TagMatcher filter;
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TreeNode* observed;
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int unread;
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QString icon;
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Tag tag;
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QValueList<Article> articles;
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QValueList<Article> addedArticlesNotify;
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QValueList<Article> removedArticlesNotify;
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QValueList<Article> updatedArticlesNotify;
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};
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TagNode::TagNode(const Tag& tag, TreeNode* observed) : d(new TagNodePrivate)
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{
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d->tag = tag;
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d->icon = tag.icon();
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d->filter = Filters::TagMatcher(tag.id());
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setTitle(tag.name());
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d->observed = observed;
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d->unread = 0;
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connect(observed, SIGNAL(signalDestroyed(TreeNode*)), this, SLOT(slotObservedDestroyed(TreeNode*)));
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connect(observed, SIGNAL(signalArticlesAdded(TreeNode*, const QValueList<Article>&)), this, SLOT(slotArticlesAdded(TreeNode*, const QValueList<Article>&)) );
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connect(observed, SIGNAL(signalArticlesUpdated(TreeNode*, const QValueList<Article>&)), this, SLOT(slotArticlesUpdated(TreeNode*, const QValueList<Article>&)) );
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connect(observed, SIGNAL(signalArticlesRemoved(TreeNode*, const QValueList<Article>&)), this, SLOT(slotArticlesRemoved(TreeNode*, const QValueList<Article>&)) );
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d->articles = observed->articles(tag.id());
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calcUnread();
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}
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QString TagNode::icon() const
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{
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return d->icon;
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}
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Tag TagNode::tag() const
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{
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return d->tag;
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}
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TagNode::~TagNode()
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{
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emitSignalDestroyed();
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delete d;
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d = 0;
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}
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bool TagNode::accept(TreeNodeVisitor* visitor)
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{
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if (visitor->visitTagNode(this))
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return true;
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else
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return visitor->visitTreeNode(this);
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}
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void TagNode::calcUnread()
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{
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int unread = 0;
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QValueList<Article>::Iterator en = d->articles.end();
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for (QValueList<Article>::Iterator it = d->articles.begin(); it != en; ++it)
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if ((*it).status() != Article::Read)
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++unread;
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if (d->unread != unread)
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{
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d->unread = unread;
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nodeModified();
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}
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}
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int TagNode::unread() const
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{
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return d->unread;
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}
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int TagNode::totalCount() const
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{
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return d->articles.count();
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}
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QValueList<Article> TagNode::articles(const QString& tag)
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{
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return d->articles;
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}
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QStringList TagNode::tags() const
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{
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// TODO
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return QStringList();
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}
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QDomElement TagNode::toOPML( QDomElement parent, QDomDocument document ) const
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{
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return QDomElement();
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}
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TreeNode* TagNode::next()
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{
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if ( nextSibling() )
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return nextSibling();
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Folder* p = parent();
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while (p)
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{
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if ( p->nextSibling() )
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return p->nextSibling();
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else
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p = p->parent();
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}
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return 0;
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}
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void TagNode::slotDeleteExpiredArticles()
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{
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// not our business
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}
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void TagNode::slotMarkAllArticlesAsRead()
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{
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setNotificationMode(false);
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QValueList<Article>::Iterator en = d->articles.end();
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for (QValueList<Article>::Iterator it = d->articles.begin(); it != en; ++it)
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(*it).setStatus(Article::Read);
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setNotificationMode(true);
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}
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void TagNode::slotAddToFetchQueue(FetchQueue* /*queue*/, bool /*intervalFetchOnly*/)
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{
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// not our business
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}
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void TagNode::doArticleNotification()
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{
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if (!d->addedArticlesNotify.isEmpty())
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{
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emit signalArticlesAdded(this, d->addedArticlesNotify);
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d->addedArticlesNotify.clear();
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}
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if (!d->updatedArticlesNotify.isEmpty())
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{
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emit signalArticlesUpdated(this, d->updatedArticlesNotify);
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d->updatedArticlesNotify.clear();
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}
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if (!d->removedArticlesNotify.isEmpty())
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{
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emit signalArticlesRemoved(this, d->removedArticlesNotify);
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d->removedArticlesNotify.clear();
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}
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TreeNode::doArticleNotification();
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}
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void TagNode::slotArticlesAdded(TreeNode* node, const QValueList<Article>& list)
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{
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bool added = false;
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for (QValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
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{
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if (!d->articles.contains(*it) && d->filter.matches(*it))
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{
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d->articles.append(*it);
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d->addedArticlesNotify.append(*it);
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added = true;
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}
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}
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if (added)
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{
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calcUnread();
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articlesModified();
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}
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}
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void TagNode::slotArticlesUpdated(TreeNode* node, const QValueList<Article>& list)
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{
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bool updated = false;
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for (QValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
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{
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if (d->articles.contains(*it))
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{
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if (!d->filter.matches(*it)) // articles is in list, but doesn't match our criteria anymore -> remove it
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{
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d->articles.remove(*it);
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d->removedArticlesNotify.append(*it);
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updated = true;
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}
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else // otherwise the article remains in the list and we just forward the update
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{
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d->updatedArticlesNotify.append(*it);
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updated = true;
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}
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}
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else // article not in list
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{
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if (d->filter.matches(*it)) // articles is not in list, but matches our criteria -> add it
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{
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d->articles.append(*it);
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d->addedArticlesNotify.append(*it);
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updated = true;
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}
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}
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}
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if (updated)
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{
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calcUnread();
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articlesModified();
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}
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}
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void TagNode::slotArticlesRemoved(TreeNode* node, const QValueList<Article>& list)
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{
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bool removed = false;
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for (QValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
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{
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if (d->articles.contains(*it))
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{
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d->articles.remove(*it);
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d->removedArticlesNotify.append(*it);
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removed = true;
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}
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}
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if (removed)
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{
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calcUnread();
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articlesModified();
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}
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}
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void TagNode::setTitle(const QString& title)
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{
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if (d->tag.name() != title)
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d->tag.setName(title);
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TreeNode::setTitle(title);
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}
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void TagNode::slotObservedDestroyed(TreeNode* /*observed*/)
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{
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d->removedArticlesNotify = d->articles;
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d->articles.clear();
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articlesModified();
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}
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void TagNode::tagChanged()
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{
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bool changed = false;
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if (title() != d->tag.name())
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{
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setTitle(d->tag.name());
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changed = true;
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}
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if (d->icon != d->tag.icon())
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{
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d->icon = d->tag.icon();
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changed = true;
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}
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if (changed)
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nodeModified();
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}
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} // namespace Akregator
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#include "tagnode.moc"
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