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apache / logging-site / dbf00bf3edf8aaf89688e280d5bdb63120757a2f / . / docs / projects / chainsaw / chainsaw_20060302 / xref / org / apache / log4j / chainsaw / prefs / MRUFileList.html
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<a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em>
<a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
<a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2." target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.</a>0</em>
<a class="jxr_linenumber" name="L10" href="#L10">10</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * limitations under the License.</em>
<a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="L17" href="#L17">17</a> <strong class="jxr_keyword">package</strong> org.apache.log4j.chainsaw.prefs;
<a class="jxr_linenumber" name="L18" href="#L18">18</a>
<a class="jxr_linenumber" name="L19" href="#L19">19</a> <strong class="jxr_keyword">import</strong> java.io.Reader;
<a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">import</strong> java.net.URL;
<a class="jxr_linenumber" name="L21" href="#L21">21</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a class="jxr_linenumber" name="L22" href="#L22">22</a> <strong class="jxr_keyword">import</strong> java.util.Collections;
<a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> java.util.EventListener;
<a class="jxr_linenumber" name="L24" href="#L24">24</a> <strong class="jxr_keyword">import</strong> java.util.List;
<a class="jxr_linenumber" name="L25" href="#L25">25</a>
<a class="jxr_linenumber" name="L26" href="#L26">26</a> <strong class="jxr_keyword">import</strong> javax.swing.event.ChangeEvent;
<a class="jxr_linenumber" name="L27" href="#L27">27</a> <strong class="jxr_keyword">import</strong> javax.swing.event.ChangeListener;
<a class="jxr_linenumber" name="L28" href="#L28">28</a> <strong class="jxr_keyword">import</strong> javax.swing.event.EventListenerList;
<a class="jxr_linenumber" name="L29" href="#L29">29</a>
<a class="jxr_linenumber" name="L30" href="#L30">30</a> <strong class="jxr_keyword">import</strong> com.thoughtworks.xstream.XStream;
<a class="jxr_linenumber" name="L31" href="#L31">31</a> <strong class="jxr_keyword">import</strong> com.thoughtworks.xstream.io.xml.DomDriver;
<a class="jxr_linenumber" name="L32" href="#L32">32</a>
<a class="jxr_linenumber" name="L33" href="#L33">33</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/log4j/chainsaw/prefs/MRUFileList.html">MRUFileList</a>{
<a class="jxr_linenumber" name="L34" href="#L34">34</a>
<a class="jxr_linenumber" name="L35" href="#L35">35</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../../org/apache/log4j/chainsaw/prefs/MRUFileList.html">MRUFileList</a> log4jList = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/log4j/chainsaw/prefs/MRUFileList.html">MRUFileList</a>();
<a class="jxr_linenumber" name="L36" href="#L36">36</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> DEFAULT_MRU_SIZE = 5;
<a class="jxr_linenumber" name="L37" href="#L37">37</a>
<a class="jxr_linenumber" name="L38" href="#L38">38</a> <strong class="jxr_keyword">private</strong> List fileList = <strong class="jxr_keyword">new</strong> ArrayList();
<a class="jxr_linenumber" name="L39" href="#L39">39</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> size = DEFAULT_MRU_SIZE;
<a class="jxr_linenumber" name="L40" href="#L40">40</a>
<a class="jxr_linenumber" name="L41" href="#L41">41</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">transient</strong> EventListenerList listeners = <strong class="jxr_keyword">new</strong> EventListenerList();
<a class="jxr_linenumber" name="L42" href="#L42">42</a>
<a class="jxr_linenumber" name="L43" href="#L43">43</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/log4j/chainsaw/prefs/MRUFileList.html">MRUFileList</a>() {
<a class="jxr_linenumber" name="L44" href="#L44">44</a>
<a class="jxr_linenumber" name="L45" href="#L45">45</a> }
<a class="jxr_linenumber" name="L46" href="#L46">46</a>
<a class="jxr_linenumber" name="L47" href="#L47">47</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> addChangeListener(ChangeListener listener){
<a class="jxr_linenumber" name="L48" href="#L48">48</a> listeners.add(ChangeListener.<strong class="jxr_keyword">class</strong>, listener);
<a class="jxr_linenumber" name="L49" href="#L49">49</a> }
<a class="jxr_linenumber" name="L50" href="#L50">50</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> removeChangeListener(ChangeListener listener) {
<a class="jxr_linenumber" name="L51" href="#L51">51</a> listeners.remove(ChangeListener.<strong class="jxr_keyword">class</strong>, listener);
<a class="jxr_linenumber" name="L52" href="#L52">52</a> }
<a class="jxr_linenumber" name="L53" href="#L53">53</a>
<a class="jxr_linenumber" name="L54" href="#L54">54</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L55" href="#L55">55</a> <em class="jxr_javadoccomment"> * Call this method when something opens a log file, this method</em>
<a class="jxr_linenumber" name="L56" href="#L56">56</a> <em class="jxr_javadoccomment"> * adds the URL to the list of known URL's, automatically </em>
<a class="jxr_linenumber" name="L57" href="#L57">57</a> <em class="jxr_javadoccomment"> * rolling the list to ensure the list maintains the</em>
<a class="jxr_linenumber" name="L58" href="#L58">58</a> <em class="jxr_javadoccomment"> * size property</em>
<a class="jxr_linenumber" name="L59" href="#L59">59</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="L60" href="#L60">60</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="L61" href="#L61">61</a> <em class="jxr_javadoccomment"> * @param url</em>
<a class="jxr_linenumber" name="L62" href="#L62">62</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L63" href="#L63">63</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> opened(URL url) {
<a class="jxr_linenumber" name="L64" href="#L64">64</a> <em class="jxr_comment">// first remove any existence of the URL already, make sure we don't have dupes</em>
<a class="jxr_linenumber" name="L65" href="#L65">65</a> fileList.remove(url);
<a class="jxr_linenumber" name="L66" href="#L66">66</a> <em class="jxr_comment">// now make sure we obey the size property, leaving room for 1 more to be added at the front</em>
<a class="jxr_linenumber" name="L67" href="#L67">67</a> <strong class="jxr_keyword">while</strong>(fileList.size()&gt;=size) {
<a class="jxr_linenumber" name="L68" href="#L68">68</a> fileList.remove(fileList.size()-1);
<a class="jxr_linenumber" name="L69" href="#L69">69</a> }
<a class="jxr_linenumber" name="L70" href="#L70">70</a> fileList.add(0, url);
<a class="jxr_linenumber" name="L71" href="#L71">71</a> fireChangeEvent();
<a class="jxr_linenumber" name="L72" href="#L72">72</a> }
<a class="jxr_linenumber" name="L73" href="#L73">73</a>
<a class="jxr_linenumber" name="L74" href="#L74">74</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> fireChangeEvent() {
<a class="jxr_linenumber" name="L75" href="#L75">75</a>
<a class="jxr_linenumber" name="L76" href="#L76">76</a> ChangeEvent event = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L77" href="#L77">77</a> EventListener[] eventListeners = listeners.getListeners(ChangeListener.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="L78" href="#L78">78</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; eventListeners.length; i++) {
<a class="jxr_linenumber" name="L79" href="#L79">79</a> ChangeListener listener = (ChangeListener) eventListeners[i];
<a class="jxr_linenumber" name="L80" href="#L80">80</a> <strong class="jxr_keyword">if</strong>(event==<strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L81" href="#L81">81</a> event = <strong class="jxr_keyword">new</strong> ChangeEvent(MRUFileList.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="L82" href="#L82">82</a> }
<a class="jxr_linenumber" name="L83" href="#L83">83</a> listener.stateChanged(event);
<a class="jxr_linenumber" name="L84" href="#L84">84</a> }
<a class="jxr_linenumber" name="L85" href="#L85">85</a> }
<a class="jxr_linenumber" name="L86" href="#L86">86</a>
<a class="jxr_linenumber" name="L87" href="#L87">87</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L88" href="#L88">88</a> <em class="jxr_javadoccomment"> * Returns an &lt;b&gt;unmodifiable&lt;/b&gt; List of the MRU opened file list within Chainsaw</em>
<a class="jxr_linenumber" name="L89" href="#L89">89</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="L90" href="#L90">90</a> <em class="jxr_javadoccomment"> * @return</em>
<a class="jxr_linenumber" name="L91" href="#L91">91</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L92" href="#L92">92</a> <strong class="jxr_keyword">public</strong> List getMRUList() {
<a class="jxr_linenumber" name="L93" href="#L93">93</a> <strong class="jxr_keyword">return</strong> Collections.unmodifiableList(fileList);
<a class="jxr_linenumber" name="L94" href="#L94">94</a> }
<a class="jxr_linenumber" name="L95" href="#L95">95</a>
<a class="jxr_linenumber" name="L96" href="#L96">96</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../../org/apache/log4j/chainsaw/prefs/MRUFileList.html">MRUFileList</a> log4jMRU() {
<a class="jxr_linenumber" name="L97" href="#L97">97</a> <strong class="jxr_keyword">return</strong> log4jList;
<a class="jxr_linenumber" name="L98" href="#L98">98</a> }
<a class="jxr_linenumber" name="L99" href="#L99">99</a>
<a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> loadLog4jMRUListFromXML(String xml) {
<a class="jxr_linenumber" name="L101" href="#L101">101</a> XStream xstream = <strong class="jxr_keyword">new</strong> XStream(<strong class="jxr_keyword">new</strong> DomDriver());
<a class="jxr_linenumber" name="L102" href="#L102">102</a> log4jList = (MRUFileList) xstream.fromXML(xml);
<a class="jxr_linenumber" name="L103" href="#L103">103</a> fireChangeEvent();
<a class="jxr_linenumber" name="L104" href="#L104">104</a> }
<a class="jxr_linenumber" name="L105" href="#L105">105</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> loadLog4jMRUListFromReader(Reader reader) {
<a class="jxr_linenumber" name="L106" href="#L106">106</a> XStream xstream = <strong class="jxr_keyword">new</strong> XStream(<strong class="jxr_keyword">new</strong> DomDriver());
<a class="jxr_linenumber" name="L107" href="#L107">107</a> log4jList = (MRUFileList) xstream.fromXML(reader);
<a class="jxr_linenumber" name="L108" href="#L108">108</a> fireChangeEvent();
<a class="jxr_linenumber" name="L109" href="#L109">109</a>
<a class="jxr_linenumber" name="L110" href="#L110">110</a> }
<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em class="jxr_comment">// TODO Auto-generated method stub</em>
<a class="jxr_linenumber" name="L112" href="#L112">112</a> }
</pre>
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