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<h2><a name="content"></a>akregator/src</h2>
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<h1>feedlist.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) 2004 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 <span class="preprocessor">#include "feedlist.h"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#include <qdatetime.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <qdom.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <qmap.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <qvaluelist.h></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <klocale.h></span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="preprocessor">#include "article.h"</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include "feed.h"</span>
<a name="l00036"></a>00036 <span class="preprocessor">#include "folder.h"</span>
<a name="l00037"></a>00037 <span class="preprocessor">#include "treenode.h"</span>
<a name="l00038"></a>00038 <span class="preprocessor">#include "treenodevisitor.h"</span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="keyword">namespace </span>Akregator {
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">class </span>FeedList::FeedListPrivate
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <span class="keyword">public</span>:
<a name="l00045"></a>00045
<a name="l00046"></a>00046 QMap<QString, QValueList<Feed*> > urlMap;
<a name="l00047"></a>00047 AddNodeVisitor* addNodeVisitor;
<a name="l00048"></a>00048 RemoveNodeVisitor* removeNodeVisitor;
<a name="l00049"></a>00049 };
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">class </span>FeedList::AddNodeVisitor : <span class="keyword">public</span> TreeNodeVisitor
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="keyword">public</span>:
<a name="l00054"></a>00054 AddNodeVisitor(FeedList* list) : m_list(list) {}
<a name="l00055"></a>00055
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> visitFeed(Feed* node)
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059 m_list->idMap()->insert(node->id(), node);
<a name="l00060"></a>00060 m_list->flatList()->append(node);
<a name="l00061"></a>00061 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00062"></a>00062 }
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="keyword">private</span>:
<a name="l00065"></a>00065 FeedList* m_list;
<a name="l00066"></a>00066 };
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keyword">class </span>FeedList::RemoveNodeVisitor : <span class="keyword">public</span> TreeNodeVisitor
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 <span class="keyword">public</span>:
<a name="l00071"></a>00071 RemoveNodeVisitor(FeedList* list) : m_list(list) {}
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> visitFeed(Feed* node)
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 m_list->d->urlMap[node->xmlUrl()].remove(node);
<a name="l00076"></a>00076 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keyword">private</span>:
<a name="l00080"></a>00080 FeedList* m_list;
<a name="l00081"></a>00081 };
<a name="l00082"></a>00082
<a name="l00083"></a>00083 FeedList::FeedList(QObject *parent, <span class="keyword">const</span> <span class="keywordtype">char</span> *name)
<a name="l00084"></a>00084 : NodeList(parent, name), d(new FeedListPrivate)
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 d->addNodeVisitor = <span class="keyword">new</span> AddNodeVisitor(<span class="keyword">this</span>);
<a name="l00087"></a>00087 d->removeNodeVisitor = <span class="keyword">new</span> RemoveNodeVisitor(<span class="keyword">this</span>);
<a name="l00088"></a>00088
<a name="l00089"></a>00089 Folder* rootNode = <span class="keyword">new</span> Folder(i18n(<span class="stringliteral">"All Feeds"</span>));
<a name="l00090"></a>00090 rootNode->setId(1);
<a name="l00091"></a>00091 setRootNode(rootNode);
<a name="l00092"></a>00092 addNode(rootNode, <span class="keyword">true</span>);
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordtype">void</span> FeedList::addNode(TreeNode* node, <span class="keywordtype">bool</span> preserveID)
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 NodeList::addNode(node, preserveID);
<a name="l00098"></a>00098 d->addNodeVisitor->visit(node);
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="keywordtype">void</span> FeedList::removeNode(TreeNode* node)
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 NodeList::removeNode(node);
<a name="l00104"></a>00104 d->removeNodeVisitor->visit(node);
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="keywordtype">void</span> FeedList::parseChildNodes(QDomNode &node, Folder* parent)
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 QDomElement e = node.toElement(); <span class="comment">// try to convert the node to an element.</span>
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <span class="keywordflow">if</span>( !e.isNull() )
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 QString title = e.hasAttribute(<span class="stringliteral">"text"</span>) ? e.attribute(<span class="stringliteral">"text"</span>) : e.attribute(<span class="stringliteral">"title"</span>);
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keywordflow">if</span> (e.hasAttribute(<span class="stringliteral">"xmlUrl"</span>) || e.hasAttribute(<span class="stringliteral">"xmlurl"</span>) || e.hasAttribute(<span class="stringliteral">"xmlURL"</span>) )
<a name="l00116"></a>00116 {
<a name="l00117"></a>00117 Feed* feed = <a class="code" href="classAkregator_1_1Feed.html#2aa968820e6a1e32eda573ec106c9226" title="creates a Feed object from a description in OPML format">Feed::fromOPML</a>(e);
<a name="l00118"></a>00118 <span class="keywordflow">if</span> (feed)
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120 <span class="keywordflow">if</span> (!d->urlMap[feed->xmlUrl()].contains(feed))
<a name="l00121"></a>00121 d->urlMap[feed->xmlUrl()].append(feed);
<a name="l00122"></a>00122 parent->appendChild(feed);
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 <span class="keywordflow">else</span>
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 Folder* fg = <a class="code" href="classAkregator_1_1Folder.html#d58acb9448a582b50550fb5ed3775e99" title="creates a feed group parsed from a XML dom element.">Folder::fromOPML</a>(e);
<a name="l00128"></a>00128 parent->appendChild(fg);
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="keywordflow">if</span> (e.hasChildNodes())
<a name="l00131"></a>00131 {
<a name="l00132"></a>00132 QDomNode child = e.firstChild();
<a name="l00133"></a>00133 <span class="keywordflow">while</span>(!child.isNull())
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 parseChildNodes(child, fg);
<a name="l00136"></a>00136 child = child.nextSibling();
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a><a class="code" href="classAkregator_1_1FeedList.html#632935fbc18dfbdd1012b41ac9f91423">00143</a> <span class="keywordtype">bool</span> <a class="code" href="classAkregator_1_1FeedList.html#632935fbc18dfbdd1012b41ac9f91423" title="reads an OPML document and appends the items to this list">FeedList::readFromXML</a>(<span class="keyword">const</span> QDomDocument& doc)
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145 QDomElement root = doc.documentElement();
<a name="l00146"></a>00146
<a name="l00147"></a>00147 kdDebug() << <span class="stringliteral">"loading OPML feed "</span> << root.tagName().lower() << endl;
<a name="l00148"></a>00148
<a name="l00149"></a>00149 kdDebug() << <span class="stringliteral">"measuring startup time: START"</span> << endl;
<a name="l00150"></a>00150 QTime spent;
<a name="l00151"></a>00151 spent.start();
<a name="l00152"></a>00152
<a name="l00153"></a>00153 <span class="keywordflow">if</span> (root.tagName().lower() != <span class="stringliteral">"opml"</span>)
<a name="l00154"></a>00154 {
<a name="l00155"></a>00155 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157 QDomNode bodyNode = root.firstChild();
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="keywordflow">while</span> (!bodyNode.isNull() && bodyNode.toElement().tagName().lower() != <span class="stringliteral">"body"</span>)
<a name="l00160"></a>00160 bodyNode = bodyNode.nextSibling();
<a name="l00161"></a>00161
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="keywordflow">if</span> (bodyNode.isNull())
<a name="l00164"></a>00164 {
<a name="l00165"></a>00165 kdDebug() << <span class="stringliteral">"Failed to acquire body node, markup broken?"</span> << endl;
<a name="l00166"></a>00166 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168
<a name="l00169"></a>00169 QDomElement body = bodyNode.toElement();
<a name="l00170"></a>00170
<a name="l00171"></a>00171 QDomNode i = body.firstChild();
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="keywordflow">while</span>( !i.isNull() )
<a name="l00174"></a>00174 {
<a name="l00175"></a>00175 parseChildNodes(i, rootNode());
<a name="l00176"></a>00176 i = i.nextSibling();
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="keywordflow">for</span> (<a class="code" href="classAkregator_1_1TreeNode.html" title="Abstract base class for all kind of elements in the feed tree, like feeds and feed...">TreeNode</a>* i = rootNode()->firstChild(); i && i != rootNode(); i = i->next() )
<a name="l00180"></a>00180 <span class="keywordflow">if</span> (i->id() == 0)
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182 uint <span class="keywordtype">id</span> = generateID();
<a name="l00183"></a>00183 i->setId(<span class="keywordtype">id</span>);
<a name="l00184"></a>00184 idMap()->insert(<span class="keywordtype">id</span>, i);
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00187"></a>00187 kdDebug() << <span class="stringliteral">"measuring startup time: STOP, "</span> << spent.elapsed() << <span class="stringliteral">"ms"</span> << endl;
<a name="l00188"></a>00188 kdDebug() << <span class="stringliteral">"Number of articles loaded: "</span> << rootNode()->totalCount() << endl;
<a name="l00189"></a>00189 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191
<a name="l00192"></a><a class="code" href="classAkregator_1_1FeedList.html#be93a6038561d5d1ff0c419691b6f046">00192</a> <a class="code" href="classAkregator_1_1FeedList.html#be93a6038561d5d1ff0c419691b6f046" title="Destructor.">FeedList::~FeedList</a>()
<a name="l00193"></a>00193 {
<a name="l00194"></a>00194 emit signalDestroyed(<span class="keyword">this</span>);
<a name="l00195"></a>00195 setRootNode(0);
<a name="l00196"></a>00196 <span class="keyword">delete</span> d->addNodeVisitor;
<a name="l00197"></a>00197 <span class="keyword">delete</span> d->removeNodeVisitor;
<a name="l00198"></a>00198 <span class="keyword">delete</span> d;
<a name="l00199"></a>00199 d = 0;
<a name="l00200"></a>00200 }
<a name="l00201"></a>00201
<a name="l00202"></a><a class="code" href="classAkregator_1_1FeedList.html#e44cbd10dc10f44a690649465f4d075b">00202</a> <a class="code" href="classAkregator_1_1Feed.html" title="represents a feed">Feed</a>* <a class="code" href="classAkregator_1_1FeedList.html#e44cbd10dc10f44a690649465f4d075b" title="returns a feed object for a given feed URL.">FeedList::findByURL</a>(<span class="keyword">const</span> QString& feedURL)<span class="keyword"> const</span>
<a name="l00203"></a>00203 <span class="keyword"></span>{
<a name="l00204"></a>00204 <span class="keywordflow">if</span> (d->urlMap[feedURL].isEmpty())
<a name="l00205"></a>00205 <span class="keywordflow">return</span> 0;
<a name="l00206"></a>00206 <span class="keywordflow">else</span>
<a name="l00207"></a>00207 <span class="keywordflow">return</span> *(d->urlMap[feedURL].begin());
<a name="l00208"></a>00208 }
<a name="l00209"></a>00209
<a name="l00210"></a>00210 <a class="code" href="classAkregator_1_1Article.html" title="A proxy class for RSS::Article with some additional methods to assist sorting.">Article</a> FeedList::findArticle(<span class="keyword">const</span> QString& feedURL, <span class="keyword">const</span> QString& guid)<span class="keyword"> const</span>
<a name="l00211"></a>00211 <span class="keyword"></span>{
<a name="l00212"></a>00212 <a class="code" href="classAkregator_1_1Feed.html" title="represents a feed">Feed</a>* feed = <a class="code" href="classAkregator_1_1FeedList.html#e44cbd10dc10f44a690649465f4d075b" title="returns a feed object for a given feed URL.">findByURL</a>(feedURL);
<a name="l00213"></a>00213
<a name="l00214"></a>00214 <span class="keywordflow">return</span> feed ? feed-><a class="code" href="classAkregator_1_1Feed.html#d1d3d91c786cc3dceb7e7eb79893970d" title="returns the article with the given guid, or a null article if it not exists">findArticle</a>(guid) : <a class="code" href="classAkregator_1_1Article.html" title="A proxy class for RSS::Article with some additional methods to assist sorting.">Article</a>();
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216
<a name="l00217"></a><a class="code" href="classAkregator_1_1FeedList.html#bb859a2c58a78ef7a498c87dba354cd3">00217</a> <span class="keywordtype">void</span> <a class="code" href="classAkregator_1_1FeedList.html#bb859a2c58a78ef7a498c87dba354cd3" title="appends another feed list as sub tree.">FeedList::append</a>(<a class="code" href="classAkregator_1_1FeedList.html" title="The model of a feed tree, represents an OPML document.">FeedList</a>* list, <a class="code" href="classAkregator_1_1Folder.html" title="Represents a folder (containing feeds and/or other folders).">Folder</a>* parent, <a class="code" href="classAkregator_1_1TreeNode.html" title="Abstract base class for all kind of elements in the feed tree, like feeds and feed...">TreeNode</a>* after)
<a name="l00218"></a>00218 {
<a name="l00219"></a>00219 <span class="keywordflow">if</span> ( list == <span class="keyword">this</span> )
<a name="l00220"></a>00220 <span class="keywordflow">return</span>;
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="keywordflow">if</span> ( !flatList()->contains(parent) )
<a name="l00223"></a>00223 parent = rootNode();
<a name="l00224"></a>00224
<a name="l00225"></a>00225 QValueList<TreeNode*> children = list->rootNode()->children();
<a name="l00226"></a>00226
<a name="l00227"></a>00227 QValueList<TreeNode*>::ConstIterator end( children.end() );
<a name="l00228"></a>00228 <span class="keywordflow">for</span> (QValueList<TreeNode*>::ConstIterator it = children.begin(); it != end; ++it)
<a name="l00229"></a>00229 {
<a name="l00230"></a>00230 list->rootNode()->removeChild(*it);
<a name="l00231"></a>00231 parent-><a class="code" href="classAkregator_1_1Folder.html#24e0997c19feed2e4581e7b226fbbed5" title="inserts node as child after child node after.">insertChild</a>(*it, after);
<a name="l00232"></a>00232 after = *it;
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234 }
<a name="l00235"></a>00235
<a name="l00236"></a><a class="code" href="classAkregator_1_1FeedList.html#7e43794e7d2883e279426709dd21bbae">00236</a> QDomDocument <a class="code" href="classAkregator_1_1FeedList.html#7e43794e7d2883e279426709dd21bbae" title="exports the feed list as OPML.">FeedList::toXML</a>()<span class="keyword"> const</span>
<a name="l00237"></a>00237 <span class="keyword"></span>{
<a name="l00238"></a>00238 QDomDocument doc;
<a name="l00239"></a>00239 doc.appendChild( doc.createProcessingInstruction( <span class="stringliteral">"xml"</span>, <span class="stringliteral">"version=\"1.0\" encoding=\"UTF-8\""</span> ) );
<a name="l00240"></a>00240
<a name="l00241"></a>00241 QDomElement root = doc.createElement( <span class="stringliteral">"opml"</span> );
<a name="l00242"></a>00242 root.setAttribute( <span class="stringliteral">"version"</span>, <span class="stringliteral">"1.0"</span> );
<a name="l00243"></a>00243 doc.appendChild( root );
<a name="l00244"></a>00244
<a name="l00245"></a>00245 QDomElement head = doc.createElement( <span class="stringliteral">"head"</span> );
<a name="l00246"></a>00246 root.appendChild( head );
<a name="l00247"></a>00247
<a name="l00248"></a>00248 QDomElement ti = doc.createElement( <span class="stringliteral">"text"</span> );
<a name="l00249"></a>00249 head.appendChild( ti );
<a name="l00250"></a>00250
<a name="l00251"></a>00251 QDomText t = doc.createTextNode( title() );
<a name="l00252"></a>00252 ti.appendChild( t );
<a name="l00253"></a>00253
<a name="l00254"></a>00254 QDomElement body = doc.createElement( <span class="stringliteral">"body"</span> );
<a name="l00255"></a>00255 root.appendChild( body );
<a name="l00256"></a>00256
<a name="l00257"></a>00257 QValueList<TreeNode*> children = rootNode()->children();
<a name="l00258"></a>00258
<a name="l00259"></a>00259 QValueList<TreeNode*>::ConstIterator end( children.end() );
<a name="l00260"></a>00260
<a name="l00261"></a>00261 <span class="keywordflow">for</span> (QValueList<TreeNode*>::ConstIterator it = children.begin(); it != end; ++it)
<a name="l00262"></a>00262 body.appendChild( (*it)->toOPML(body, doc) );
<a name="l00263"></a>00263
<a name="l00264"></a>00264 <span class="keywordflow">return</span> doc;
<a name="l00265"></a>00265 }
<a name="l00266"></a>00266
<a name="l00267"></a>00267 } <span class="comment">// namespace Akregator</span>
<a name="l00268"></a>00268 <span class="preprocessor">#include "feedlist.moc"</span>
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