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<h2><a name="content"></a>akregator/src</h2>
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<h1>tagnode.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> This file is part of Akregator.</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment"> Copyright (C) 2005 Frank Osterfeld <frank.osterfeld at kdemail.net></span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment"> This program is free software; you can redistribute it and/or modify</span>
<a name="l00007"></a>00007 <span class="comment"> it under the terms of the GNU General Public License as published by</span>
<a name="l00008"></a>00008 <span class="comment"> the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00009"></a>00009 <span class="comment"> (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"></span>
<a name="l00011"></a>00011 <span class="comment"> This program is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00014"></a>00014 <span class="comment"> GNU General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"></span>
<a name="l00016"></a>00016 <span class="comment"> You should have received a copy of the GNU General Public License</span>
<a name="l00017"></a>00017 <span class="comment"> along with this program; if not, write to the Free Software</span>
<a name="l00018"></a>00018 <span class="comment"> Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.</span>
<a name="l00019"></a>00019 <span class="comment"></span>
<a name="l00020"></a>00020 <span class="comment"> As a special exception, permission is given to link this program</span>
<a name="l00021"></a>00021 <span class="comment"> with any edition of Qt, and distribute the resulting executable,</span>
<a name="l00022"></a>00022 <span class="comment"> without including the source code for Qt in the source distribution.</span>
<a name="l00023"></a>00023 <span class="comment">*/</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="preprocessor">#include "article.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "articlefilter.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "fetchqueue.h"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "folder.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "tag.h"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "tagnode.h"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "treenode.h"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "treenodevisitor.h"</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="preprocessor">#include <qdom.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <qstring.h></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <qvaluelist.h></span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keyword">namespace </span>Akregator {
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="keyword">class </span>TagNode::TagNodePrivate
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="keyword">public</span>:
<a name="l00043"></a>00043 Filters::TagMatcher filter;
<a name="l00044"></a>00044 TreeNode* observed;
<a name="l00045"></a>00045 <span class="keywordtype">int</span> unread;
<a name="l00046"></a>00046 QString icon;
<a name="l00047"></a>00047 Tag tag;
<a name="l00048"></a>00048 QValueList<Article> articles;
<a name="l00049"></a>00049 QValueList<Article> addedArticlesNotify;
<a name="l00050"></a>00050 QValueList<Article> removedArticlesNotify;
<a name="l00051"></a>00051 QValueList<Article> updatedArticlesNotify;
<a name="l00052"></a>00052 };
<a name="l00053"></a>00053
<a name="l00054"></a>00054 TagNode::TagNode(<span class="keyword">const</span> Tag& tag, TreeNode* observed) : d(new TagNodePrivate)
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056 d->tag = tag;
<a name="l00057"></a>00057 d->icon = tag.icon();
<a name="l00058"></a>00058 d->filter = Filters::TagMatcher(tag.id());
<a name="l00059"></a>00059 setTitle(tag.name());
<a name="l00060"></a>00060 d->observed = observed;
<a name="l00061"></a>00061 d->unread = 0;
<a name="l00062"></a>00062
<a name="l00063"></a>00063 connect(observed, SIGNAL(signalDestroyed(TreeNode*)), <span class="keyword">this</span>, SLOT(slotObservedDestroyed(TreeNode*)));
<a name="l00064"></a>00064 connect(observed, SIGNAL(signalArticlesAdded(TreeNode*, <span class="keyword">const</span> QValueList<Article>&)), <span class="keyword">this</span>, SLOT(slotArticlesAdded(TreeNode*, <span class="keyword">const</span> QValueList<Article>&)) );
<a name="l00065"></a>00065 connect(observed, SIGNAL(signalArticlesUpdated(TreeNode*, <span class="keyword">const</span> QValueList<Article>&)), <span class="keyword">this</span>, SLOT(slotArticlesUpdated(TreeNode*, <span class="keyword">const</span> QValueList<Article>&)) );
<a name="l00066"></a>00066 connect(observed, SIGNAL(signalArticlesRemoved(TreeNode*, <span class="keyword">const</span> QValueList<Article>&)), <span class="keyword">this</span>, SLOT(slotArticlesRemoved(TreeNode*, <span class="keyword">const</span> QValueList<Article>&)) );
<a name="l00067"></a>00067
<a name="l00068"></a>00068 d->articles = observed->articles(tag.id());
<a name="l00069"></a>00069 calcUnread();
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072 QString TagNode::icon()<span class="keyword"> const</span>
<a name="l00073"></a>00073 <span class="keyword"></span>{
<a name="l00074"></a>00074 <span class="keywordflow">return</span> d->icon;
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076
<a name="l00077"></a>00077 Tag TagNode::tag()<span class="keyword"> const</span>
<a name="l00078"></a>00078 <span class="keyword"></span>{
<a name="l00079"></a>00079 <span class="keywordflow">return</span> d->tag;
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082 TagNode::~TagNode()
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 emitSignalDestroyed();
<a name="l00085"></a>00085 <span class="keyword">delete</span> d;
<a name="l00086"></a>00086 d = 0;
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="keywordtype">bool</span> TagNode::accept(TreeNodeVisitor* visitor)
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 <span class="keywordflow">if</span> (visitor->visitTagNode(<span class="keyword">this</span>))
<a name="l00092"></a>00092 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00093"></a>00093 <span class="keywordflow">else</span>
<a name="l00094"></a>00094 <span class="keywordflow">return</span> visitor->visitTreeNode(<span class="keyword">this</span>);
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keywordtype">void</span> TagNode::calcUnread()
<a name="l00098"></a>00098 {
<a name="l00099"></a>00099 <span class="keywordtype">int</span> unread = 0;
<a name="l00100"></a>00100 QValueList<Article>::Iterator en = d->articles.end();
<a name="l00101"></a>00101 <span class="keywordflow">for</span> (QValueList<Article>::Iterator it = d->articles.begin(); it != en; ++it)
<a name="l00102"></a>00102 <span class="keywordflow">if</span> ((*it).status() != Article::Read)
<a name="l00103"></a>00103 ++unread;
<a name="l00104"></a>00104 <span class="keywordflow">if</span> (d->unread != unread)
<a name="l00105"></a>00105 {
<a name="l00106"></a>00106 d->unread = unread;
<a name="l00107"></a>00107 nodeModified();
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <span class="keywordtype">int</span> TagNode::unread()<span class="keyword"> const</span>
<a name="l00112"></a>00112 <span class="keyword"></span>{
<a name="l00113"></a>00113 <span class="keywordflow">return</span> d->unread;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordtype">int</span> TagNode::totalCount()<span class="keyword"> const</span>
<a name="l00118"></a>00118 <span class="keyword"></span>{
<a name="l00119"></a>00119 <span class="keywordflow">return</span> d->articles.count();
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122
<a name="l00123"></a>00123 QValueList<Article> TagNode::articles(<span class="keyword">const</span> QString& tag)
<a name="l00124"></a>00124 {
<a name="l00125"></a>00125 <span class="keywordflow">return</span> d->articles;
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 QStringList TagNode::tags()<span class="keyword"> const</span>
<a name="l00129"></a>00129 <span class="keyword"></span>{
<a name="l00130"></a>00130 <span class="comment">// TODO</span>
<a name="l00131"></a>00131 <span class="keywordflow">return</span> QStringList();
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133
<a name="l00134"></a>00134 QDomElement TagNode::toOPML( QDomElement parent, QDomDocument document )<span class="keyword"> const</span>
<a name="l00135"></a>00135 <span class="keyword"></span>{
<a name="l00136"></a>00136 <span class="keywordflow">return</span> QDomElement();
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138
<a name="l00139"></a>00139 TreeNode* TagNode::next()
<a name="l00140"></a>00140 {
<a name="l00141"></a>00141 <span class="keywordflow">if</span> ( nextSibling() )
<a name="l00142"></a>00142 <span class="keywordflow">return</span> nextSibling();
<a name="l00143"></a>00143
<a name="l00144"></a>00144 Folder* p = parent();
<a name="l00145"></a>00145 <span class="keywordflow">while</span> (p)
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147 <span class="keywordflow">if</span> ( p->nextSibling() )
<a name="l00148"></a>00148 <span class="keywordflow">return</span> p->nextSibling();
<a name="l00149"></a>00149 <span class="keywordflow">else</span>
<a name="l00150"></a>00150 p = p->parent();
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152 <span class="keywordflow">return</span> 0;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="keywordtype">void</span> TagNode::slotDeleteExpiredArticles()
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157 <span class="comment">// not our business</span>
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordtype">void</span> TagNode::slotMarkAllArticlesAsRead()
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162 setNotificationMode(<span class="keyword">false</span>);
<a name="l00163"></a>00163 QValueList<Article>::Iterator en = d->articles.end();
<a name="l00164"></a>00164 <span class="keywordflow">for</span> (QValueList<Article>::Iterator it = d->articles.begin(); it != en; ++it)
<a name="l00165"></a>00165 (*it).setStatus(Article::Read);
<a name="l00166"></a>00166 setNotificationMode(<span class="keyword">true</span>);
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keywordtype">void</span> TagNode::slotAddToFetchQueue(FetchQueue* <span class="comment">/*queue*/</span>, <span class="keywordtype">bool</span> <span class="comment">/*intervalFetchOnly*/</span>)
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 <span class="comment">// not our business</span>
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keywordtype">void</span> TagNode::doArticleNotification()
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176 <span class="keywordflow">if</span> (!d->addedArticlesNotify.isEmpty())
<a name="l00177"></a>00177 {
<a name="l00178"></a>00178 emit signalArticlesAdded(<span class="keyword">this</span>, d->addedArticlesNotify);
<a name="l00179"></a>00179 d->addedArticlesNotify.clear();
<a name="l00180"></a>00180 }
<a name="l00181"></a>00181 <span class="keywordflow">if</span> (!d->updatedArticlesNotify.isEmpty())
<a name="l00182"></a>00182 {
<a name="l00183"></a>00183 emit signalArticlesUpdated(<span class="keyword">this</span>, d->updatedArticlesNotify);
<a name="l00184"></a>00184 d->updatedArticlesNotify.clear();
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186 <span class="keywordflow">if</span> (!d->removedArticlesNotify.isEmpty())
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 emit signalArticlesRemoved(<span class="keyword">this</span>, d->removedArticlesNotify);
<a name="l00189"></a>00189 d->removedArticlesNotify.clear();
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191 <a class="code" href="classAkregator_1_1TreeNode.html#579bead48c6af330521ffbf24cfc56c2" title="reimplement this in subclasses to do the actual notification called by articlesModified...">TreeNode::doArticleNotification</a>();
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="keywordtype">void</span> TagNode::slotArticlesAdded(TreeNode* node, <span class="keyword">const</span> QValueList<Article>& list)
<a name="l00195"></a>00195 {
<a name="l00196"></a>00196 <span class="keywordtype">bool</span> added = <span class="keyword">false</span>;
<a name="l00197"></a>00197 <span class="keywordflow">for</span> (QValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
<a name="l00198"></a>00198 {
<a name="l00199"></a>00199 <span class="keywordflow">if</span> (!d->articles.contains(*it) && d->filter.matches(*it))
<a name="l00200"></a>00200 {
<a name="l00201"></a>00201 d->articles.append(*it);
<a name="l00202"></a>00202 d->addedArticlesNotify.append(*it);
<a name="l00203"></a>00203 added = <span class="keyword">true</span>;
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <span class="keywordflow">if</span> (added)
<a name="l00208"></a>00208 {
<a name="l00209"></a>00209 calcUnread();
<a name="l00210"></a>00210 articlesModified();
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213
<a name="l00214"></a>00214 <span class="keywordtype">void</span> TagNode::slotArticlesUpdated(TreeNode* node, <span class="keyword">const</span> QValueList<Article>& list)
<a name="l00215"></a>00215 {
<a name="l00216"></a>00216 <span class="keywordtype">bool</span> updated = <span class="keyword">false</span>;
<a name="l00217"></a>00217 <span class="keywordflow">for</span> (QValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
<a name="l00218"></a>00218 {
<a name="l00219"></a>00219 <span class="keywordflow">if</span> (d->articles.contains(*it))
<a name="l00220"></a>00220 {
<a name="l00221"></a>00221 <span class="keywordflow">if</span> (!d->filter.matches(*it)) <span class="comment">// articles is in list, but doesn't match our criteria anymore -> remove it</span>
<a name="l00222"></a>00222 {
<a name="l00223"></a>00223 d->articles.remove(*it);
<a name="l00224"></a>00224 d->removedArticlesNotify.append(*it);
<a name="l00225"></a>00225 updated = <span class="keyword">true</span>;
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227 <span class="keywordflow">else</span> <span class="comment">// otherwise the article remains in the list and we just forward the update</span>
<a name="l00228"></a>00228 {
<a name="l00229"></a>00229 d->updatedArticlesNotify.append(*it);
<a name="l00230"></a>00230 updated = <span class="keyword">true</span>;
<a name="l00231"></a>00231 }
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233 <span class="keywordflow">else</span> <span class="comment">// article not in list</span>
<a name="l00234"></a>00234 {
<a name="l00235"></a>00235 <span class="keywordflow">if</span> (d->filter.matches(*it)) <span class="comment">// articles is not in list, but matches our criteria -> add it</span>
<a name="l00236"></a>00236 {
<a name="l00237"></a>00237 d->articles.append(*it);
<a name="l00238"></a>00238 d->addedArticlesNotify.append(*it);
<a name="l00239"></a>00239 updated = <span class="keyword">true</span>;
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241 }
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243 <span class="keywordflow">if</span> (updated)
<a name="l00244"></a>00244 {
<a name="l00245"></a>00245 calcUnread();
<a name="l00246"></a>00246 articlesModified();
<a name="l00247"></a>00247 }
<a name="l00248"></a>00248 }
<a name="l00249"></a>00249
<a name="l00250"></a>00250 <span class="keywordtype">void</span> TagNode::slotArticlesRemoved(TreeNode* node, <span class="keyword">const</span> QValueList<Article>& list)
<a name="l00251"></a>00251 {
<a name="l00252"></a>00252 <span class="keywordtype">bool</span> removed = <span class="keyword">false</span>;
<a name="l00253"></a>00253 <span class="keywordflow">for</span> (QValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
<a name="l00254"></a>00254 {
<a name="l00255"></a>00255 <span class="keywordflow">if</span> (d->articles.contains(*it))
<a name="l00256"></a>00256 {
<a name="l00257"></a>00257 d->articles.remove(*it);
<a name="l00258"></a>00258 d->removedArticlesNotify.append(*it);
<a name="l00259"></a>00259 removed = <span class="keyword">true</span>;
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261 }
<a name="l00262"></a>00262 <span class="keywordflow">if</span> (removed)
<a name="l00263"></a>00263 {
<a name="l00264"></a>00264 calcUnread();
<a name="l00265"></a>00265 articlesModified();
<a name="l00266"></a>00266 }
<a name="l00267"></a>00267 }
<a name="l00268"></a>00268
<a name="l00269"></a>00269 <span class="keywordtype">void</span> TagNode::setTitle(<span class="keyword">const</span> QString& title)
<a name="l00270"></a>00270 {
<a name="l00271"></a>00271 <span class="keywordflow">if</span> (d->tag.name() != title)
<a name="l00272"></a>00272 d->tag.setName(title);
<a name="l00273"></a>00273 <a class="code" href="classAkregator_1_1TreeNode.html#3fa0ca0cfd4cca5d9b8e5116feb67e7b" title="Sets the title of the node.">TreeNode::setTitle</a>(title);
<a name="l00274"></a>00274 }
<a name="l00275"></a>00275
<a name="l00276"></a>00276 <span class="keywordtype">void</span> TagNode::slotObservedDestroyed(TreeNode* <span class="comment">/*observed*/</span>)
<a name="l00277"></a>00277 {
<a name="l00278"></a>00278 d->removedArticlesNotify = d->articles;
<a name="l00279"></a>00279 d->articles.clear();
<a name="l00280"></a>00280 articlesModified();
<a name="l00281"></a>00281 }
<a name="l00282"></a>00282
<a name="l00283"></a>00283 <span class="keywordtype">void</span> TagNode::tagChanged()
<a name="l00284"></a>00284 {
<a name="l00285"></a>00285 <span class="keywordtype">bool</span> changed = <span class="keyword">false</span>;
<a name="l00286"></a>00286 <span class="keywordflow">if</span> (title() != d->tag.name())
<a name="l00287"></a>00287 {
<a name="l00288"></a>00288 setTitle(d->tag.name());
<a name="l00289"></a>00289 changed = <span class="keyword">true</span>;
<a name="l00290"></a>00290 }
<a name="l00291"></a>00291
<a name="l00292"></a>00292 <span class="keywordflow">if</span> (d->icon != d->tag.icon())
<a name="l00293"></a>00293 {
<a name="l00294"></a>00294 d->icon = d->tag.icon();
<a name="l00295"></a>00295 changed = <span class="keyword">true</span>;
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297
<a name="l00298"></a>00298 <span class="keywordflow">if</span> (changed)
<a name="l00299"></a>00299 nodeModified();
<a name="l00300"></a>00300 }
<a name="l00301"></a>00301
<a name="l00302"></a>00302 } <span class="comment">// namespace Akregator</span>
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="preprocessor">#include "tagnode.moc"</span>
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