doc/Plugin-System.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4   <meta charset="utf-8">
   5   <meta name="generator" content="pandoc">
   6   <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
   7   <title>Shaarli - Plugin System</title>
   8   <style type="text/css">code{white-space: pre;}</style>
   9   <!--[if lt IE 9]>
  10     <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
  11   <![endif]-->
  12   <style type="text/css">
  13 table.sourceCode, tr.sourceCode, td.lineNumbers, td.sourceCode {
  14   margin: 0; padding: 0; vertical-align: baseline; border: none; }
  15 table.sourceCode { width: 100%; line-height: 100%; }
  16 td.lineNumbers { text-align: right; padding-right: 4px; padding-left: 4px; color: #aaaaaa; border-right: 1px solid #aaaaaa; }
  17 td.sourceCode { padding-left: 5px; }
  18 code > span.kw { color: #007020; font-weight: bold; }
  19 code > span.dt { color: #902000; }
  20 code > span.dv { color: #40a070; }
  21 code > span.bn { color: #40a070; }
  22 code > span.fl { color: #40a070; }
  23 code > span.ch { color: #4070a0; }
  24 code > span.st { color: #4070a0; }
  25 code > span.co { color: #60a0b0; font-style: italic; }
  26 code > span.ot { color: #007020; }
  27 code > span.al { color: #ff0000; font-weight: bold; }
  28 code > span.fu { color: #06287e; }
  29 code > span.er { color: #ff0000; font-weight: bold; }
  30   </style>
  31   <link rel="stylesheet" href="github-markdown.css">
  32 </head>
  33 <body>
  34 <div id="local-sidebar">
  35 <ul>
  36 <li><a href="Home.html">Home</a></li>
  37 <li>Installation
  38 <ul>
  39 <li><a href="Server-requirements.html">Server requirements</a></li>
  40 <li><a href="Server-configuration.html">Server configuration</a></li>
  41 <li><a href="Shaarli-configuration.html">Shaarli configuration</a></li>
  42 </ul></li>
  43 <li><a href="Usage.html">Usage</a>
  44 <ul>
  45 <li><a href="Sharing-button.html">Sharing button</a> (bookmarklet)</li>
  46 <li><a href="Firefox-share.html">Firefox share</a></li>
  47 <li><a href="RSS-feeds.html">RSS feeds</a></li>
  48 </ul></li>
  49 <li>How To
  50 <ul>
  51 <li><a href="Backup,-restore,-import-and-export.html">Backup, restore, import and export</a></li>
  52 <li><a href="Copy-an-existing-installation-over-SSH-and-serve-it-locally.html">Copy an existing installation over SSH and serve it locally</a></li>
  53 <li><a href="Download-CSS-styles-from-an-OPML-list.html">Download CSS styles from an OPML list</a></li>
  54 <li><a href="Datastore-hacks.html">Datastore hacks</a></li>
  55 </ul></li>
  56 <li><a href="Troubleshooting.html">Troubleshooting</a></li>
  57 <li><a href="Development.html">Development</a>
  58 <ul>
  59 <li><a href="GnuPG-signature.html">GnuPG signature</a></li>
  60 <li><a href="Coding-guidelines.html">Coding guidelines</a></li>
  61 <li><a href="Directory-structure.html">Directory structure</a></li>
  62 <li><a href="3rd-party-libraries.html">3rd party libraries</a></li>
  63 <li><a href="Plugin-System.html">Plugin System</a></li>
  64 <li><a href="Security.html">Security</a></li>
  65 <li><a href="Static-analysis.html">Static analysis</a></li>
  66 <li><a href="Theming.html">Theming</a></li>
  67 <li><a href="Unit-tests.html">Unit tests</a></li>
  68 </ul></li>
  69 <li>About
  70 <ul>
  71 <li><a href="FAQ.html">FAQ</a></li>
  72 <li><a href="Community-&amp;-Related-software.html">Community &amp; Related software</a></li>
  73 <li><a href="TODO.html">TODO</a></li>
  74 </ul></li>
  75 </ul>
  76 </div>
  77 <h1 id="plugin-system">Plugin System</h1>
  78 <blockquote>
  79 <p>Note: Plugin current status - in developpement (not merged into master).</p>
  80 </blockquote>
  81 <p><a href="#plugin-user-guide"><strong>I am a user.</strong> Plugin User Guide.</a><a href=".html"></a></p>
  82 <p><a href="#developper-api"><strong>I am a developper.</strong> Developper API.</a><a href=".html"></a></p>
  83 <p><a href="#guide-for-template-designer"><strong>I am a template designer.</strong> Guide for template designer.</a><a href=".html"></a></p>
  84 <h2 id="plugin-user-guide">Plugin User Guide</h2>
  85 <h3 id="manage-plugins">Manage plugins</h3>
  86 <p>In <code>config.php</code>, change $GLOBALS<a href="&#39;ENABLED_PLUGINS&#39;]-array:.html">'config'['ENABLED_PLUGINS'] array:</a></p>
  87 <pre class="sourceCode php"><code class="sourceCode php"><span class="kw">$GLOBALS</span><span class="ot">[</span><span class="st">&#39;config&#39;</span><span class="ot">[</span><span class="st">&#39;ENABLED_PLUGINS&#39;</span><span class="ot">]](</span><span class="st">&#39;ENABLED_PLUGINS&#39;</span><span class="ot">]</span>.html<span class="ot">)</span></code></pre>
  88 <p>Full list:</p>
  89 <pre class="sourceCode php"><code class="sourceCode php"><span class="kw">$GLOBALS</span><span class="ot">[</span><span class="st">&#39;config&#39;</span><span class="ot">[</span><span class="st">&#39;ENABLED_PLUGINS&#39;</span><span class="ot">]</span> = <span class="fu">array</span><span class="ot">(](</span><span class="st">&#39;ENABLED_PLUGINS&#39;</span><span class="ot">]</span>-=-<span class="fu">array</span><span class="ot">(</span>.html<span class="ot">)</span>
  90     <span class="st">&#39;qrcode&#39;</span><span class="ot">,</span> <span class="st">&#39;archiveorg&#39;</span><span class="ot">,</span> <span class="st">&#39;readityourself&#39;</span><span class="ot">,</span> <span class="st">&#39;playvideos&#39;</span><span class="ot">,</span>
  91     <span class="st">&#39;wallabag&#39;</span><span class="ot">,</span> <span class="st">&#39;markdown&#39;</span><span class="ot">,</span> <span class="st">&#39;addlink_toolbar&#39;</span><span class="ot">,</span>
  92 <span class="ot">);</span></code></pre>
  93 <h3 id="list-of-plugins">List of plugins</h3>
  94 <p>Plugin maintained by the community:</p>
  95 <ul>
  96 <li>Archive.org - add a clickable icon to every link to archive.org.</li>
  97 <li>Addlink in toolbar - add a field to paste new links URL in toolbar.</li>
  98 <li>Markdown - write and display Shaare in Markdown.</li>
  99 <li>Play videos - popup to play all videos displayed in linklist.</li>
 100 <li>QRCode - add a clickable icon generating a QRCode for every link.</li>
 101 <li>ReadItYourself - add a clickable icon for ReadItYourself.</li>
 102 <li>Wallabag - add a clickable icon for Wallabag.</li>
 103 </ul>
 104 <h2 id="developper-api">Developper API</h2>
 105 <h3 id="what-can-i-do-with-plugins">What can I do with plugins?</h3>
 106 <p>The plugin system let you:</p>
 107 <ul>
 108 <li>insert content into specific places across templates.</li>
 109 <li>alter data before templates rendering.</li>
 110 <li>alter data before saving new links.</li>
 111 </ul>
 112 <h3 id="how-can-i-create-a-plugin-for-shaarli">How can I create a plugin for Shaarli?</h3>
 113 <p>First, chose a plugin name, such as <code>demo_plugin</code>.</p>
 114 <p>Under <code>plugin</code> folder, create a folder named with your plugin name. Then create a <plugin_name>.php file in that folder.</p>
 115 <p>You should have the following tree view:</p>
 116 <pre><code>| index.php
 117 | plugins/
 118 |---| demo_plugin/
 119 |   |---| demo_plugin.php</code></pre>
 120 <h3 id="understanding-hooks">Understanding hooks</h3>
 121 <p>A plugin is a set of functions. Each function will be triggered by the plugin system at certain point in Shaarli execution.</p>
 122 <p>These functions need to be named with this pattern:</p>
 123 <pre><code>hook_&lt;plugin_name&gt;_&lt;hook_name&gt;</code></pre>
 124 <p>For exemple, if my plugin want to add data to the header, this function is needed:</p>
 125 <pre><code>hook_demo_plugin_render_header()</code></pre>
 126 <p>If this function is declared, and the plugin enabled, it will be called every time Shaarli is rendering the header.</p>
 127 <h3 id="plugins-data">Plugin's data</h3>
 128 <h4 id="parameters">Parameters</h4>
 129 <p>Every hook function has a <code>$data</code> parameter. Its content differs for each hooks.</p>
 130 <p><strong>This parameter needs to be returned every time</strong>, otherwise data is lost.</p>
 131 <pre><code>return $data;</code></pre>
 132 <h4 id="filling-templates-placeholder">Filling templates placeholder</h4>
 133 <p>Template placeholders are displayed in template in specific places.</p>
 134 <p>RainTPL displays every element contained in the placeholder's array. These element can be added by plugins.</p>
 135 <p>For example, let's add a value in the placeholder <code>top_placeholder</code> which is displayed at the top of my page:</p>
 136 <pre class="sourceCode php"><code class="sourceCode php"><span class="kw">$data</span><span class="ot">[</span><span class="st">&#39;top_placeholder&#39;</span><span class="ot">[]</span> = <span class="st">&#39;My content&#39;</span><span class="ot">;](]</span>-=-<span class="st">&#39;My-content&#39;</span><span class="ot">;</span>.html<span class="ot">)</span>
 137 <span class="co"># OR</span>
 138 <span class="fu">array_push</span><span class="ot">(</span><span class="kw">$data</span><span class="ot">[</span><span class="st">&#39;top_placeholder&#39;</span><span class="ot">],</span> <span class="st">&#39;My&#39;</span><span class="ot">,</span> <span class="st">&#39;content&#39;</span><span class="ot">);[](</span>.html<span class="ot">)</span>
 139
 140 <span class="kw">return</span> <span class="kw">$data</span><span class="ot">;</span></code></pre>
 141 <h4 id="data-manipulation">Data manipulation</h4>
 142 <p>When a page is displayed, every variable send to the template engine is passed to plugins before that in <code>$data</code>.</p>
 143 <p>The data contained by this array can be altered before template rendering.</p>
 144 <p>For exemple, in linklist, it is possible to alter every title:</p>
 145 <pre class="sourceCode php"><code class="sourceCode php"><span class="co">// mind the reference if you want $data to be altered</span>
 146 <span class="kw">foreach</span> <span class="ot">(</span><span class="kw">$data</span><span class="ot">[</span><span class="st">&#39;links&#39;</span><span class="ot">]</span> <span class="kw">as</span> &amp;<span class="kw">$value</span><span class="ot">)</span> {<span class="ot">[](</span>.html<span class="ot">)</span>
 147     <span class="co">// String reverse every title.</span>
 148     <span class="kw">$value</span><span class="ot">[</span><span class="st">&#39;title&#39;</span><span class="ot">]</span> = <span class="fu">strrev</span><span class="ot">(</span><span class="kw">$value</span><span class="ot">[</span><span class="st">&#39;title&#39;</span><span class="ot">]);[](</span>.html<span class="ot">)</span>
 149 }
 150
 151 <span class="kw">return</span> <span class="kw">$data</span><span class="ot">;</span></code></pre>
 152 <h3 id="its-not-working">It's not working!</h3>
 153 <p>Use <code>demo_plugin</code> as a functional example. It covers most of the plugin system features.</p>
 154 <p>If it's still not working, please <a href="https://github.com/shaarli/Shaarli/issues/new">open an issue</a>.<a href=".html"></a></p>
 155 <h3 id="hooks">Hooks</h3>
 156 <table>
 157 <thead>
 158 <tr class="header">
 159 <th style="text-align: left;">Hooks</th>
 160 <th style="text-align: center;">Description</th>
 161 </tr>
 162 </thead>
 163 <tbody>
 164 <tr class="odd">
 165 <td style="text-align: left;"><a href="#render_header">render_header</a></td>
 166 <td style="text-align: center;">Allow plugin to add content in page headers.</td>
 167 </tr>
 168 <tr class="even">
 169 <td style="text-align: left;"><a href="#render_includes">render_includes</a></td>
 170 <td style="text-align: center;">Allow plugin to include their own CSS files.</td>
 171 </tr>
 172 <tr class="odd">
 173 <td style="text-align: left;"><a href="#render_footer">render_footer</a></td>
 174 <td style="text-align: center;">Allow plugin to add content in page footer and include their own JS files.</td>
 175 </tr>
 176 <tr class="even">
 177 <td style="text-align: left;"><a href="#render_linklist">render_linklist</a></td>
 178 <td style="text-align: center;">It allows to add content at the begining and end of the page, after every link displayed and to alter link data.</td>
 179 </tr>
 180 <tr class="odd">
 181 <td style="text-align: left;"><a href="#render_editlink">render_editlink</a></td>
 182 <td style="text-align: center;">Allow to add fields in the form, or display elements.</td>
 183 </tr>
 184 <tr class="even">
 185 <td style="text-align: left;"><a href="#render_tools">render_tools</a></td>
 186 <td style="text-align: center;">Allow to add content at the end of the page.</td>
 187 </tr>
 188 <tr class="odd">
 189 <td style="text-align: left;"><a href="#render_picwall">render_picwall</a></td>
 190 <td style="text-align: center;">Allow to add content at the top and bottom of the page.</td>
 191 </tr>
 192 <tr class="even">
 193 <td style="text-align: left;"><a href="#render_tagcloud">render_tagcloud</a></td>
 194 <td style="text-align: center;">Allow to add content at the top and bottom of the page.</td>
 195 </tr>
 196 <tr class="odd">
 197 <td style="text-align: left;"><a href="#render_daily">render_daily</a></td>
 198 <td style="text-align: center;">Allow to add content at the top and bottom of the page, the bottom of each link and to alter data.</td>
 199 </tr>
 200 <tr class="even">
 201 <td style="text-align: left;"><a href="#savelink">savelink</a></td>
 202 <td style="text-align: center;">Allow to alter the link being saved in the datastore.</td>
 203 </tr>
 204 </tbody>
 205 </table>
 206 <h4 id="render_header">render_header</h4>
 207 <p>Triggered on every page.</p>
 208 <p>Allow plugin to add content in page headers.</p>
 209 <h5 id="data">Data</h5>
 210 <p><code>$data</code> is an array containing:</p>
 211 <ul>
 212 <li><code>_PAGE_</code>: current target page (eg: <code>linklist</code>, <code>picwall</code>, etc.).</li>
 213 <li><code>_LOGGEDIN_</code>: true if user is logged in, false otherwise.</li>
 214 </ul>
 215 <h5 id="template-placeholders">Template placeholders</h5>
 216 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 217 <p>List of placeholders:</p>
 218 <ul>
 219 <li><code>buttons_toolbar</code>: after the list of buttons in the header.</li>
 220 </ul>
 221 <p><img src="http://i.imgur.com/ssJUOrt.png" alt="buttons_toolbar_example" /><a href=".html"></a></p>
 222 <ul>
 223 <li><code>fields_toolbar</code>: after search fields in the header.</li>
 224 </ul>
 225 <blockquote>
 226 <p>Note: This will only be called in linklist.</p>
 227 </blockquote>
 228 <p><img src="http://i.imgur.com/3GMifI2.png" alt="fields_toolbar_example" /><a href=".html"></a></p>
 229 <h4 id="render_includes">render_includes</h4>
 230 <p>Triggered on every page.</p>
 231 <p>Allow plugin to include their own CSS files.</p>
 232 <h5 id="data-1">Data</h5>
 233 <p><code>$data</code> is an array containing:</p>
 234 <ul>
 235 <li><code>_PAGE_</code>: current target page (eg: <code>linklist</code>, <code>picwall</code>, etc.).</li>
 236 <li><code>_LOGGEDIN_</code>: true if user is logged in, false otherwise.</li>
 237 </ul>
 238 <h5 id="template-placeholders-1">Template placeholders</h5>
 239 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 240 <p>List of placeholders:</p>
 241 <ul>
 242 <li><code>css_files</code>: called after loading default CSS.</li>
 243 </ul>
 244 <blockquote>
 245 <p>Note: only add the path of the CSS file. E.g: <code>plugins/demo_plugin/custom_demo.css</code>.</p>
 246 </blockquote>
 247 <h4 id="render_footer">render_footer</h4>
 248 <p>Triggered on every page.</p>
 249 <p>Allow plugin to add content in page footer and include their own JS files.</p>
 250 <h5 id="data-2">Data</h5>
 251 <p><code>$data</code> is an array containing:</p>
 252 <ul>
 253 <li><code>_PAGE_</code>: current target page (eg: <code>linklist</code>, <code>picwall</code>, etc.).</li>
 254 <li><code>_LOGGEDIN_</code>: true if user is logged in, false otherwise.</li>
 255 </ul>
 256 <h5 id="template-placeholders-2">Template placeholders</h5>
 257 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 258 <p>List of placeholders:</p>
 259 <ul>
 260 <li><code>text</code>: called after the end of the footer text.</li>
 261 </ul>
 262 <p><img src="http://i.imgur.com/L5S2YEH.png" alt="text_example" /><a href=".html"></a></p>
 263 <ul>
 264 <li><code>js_files</code>: called at the end of the page, to include custom JS scripts.</li>
 265 </ul>
 266 <blockquote>
 267 <p>Note: only add the path of the JS file. E.g: <code>plugins/demo_plugin/custom_demo.js</code>.</p>
 268 </blockquote>
 269 <h4 id="render_linklist">render_linklist</h4>
 270 <p>Triggered when <code>linklist</code> is displayed (list of links, permalink, search, tag filtered, etc.).</p>
 271 <p>It allows to add content at the begining and end of the page, after every link displayed and to alter link data.</p>
 272 <h5 id="data-3">Data</h5>
 273 <p><code>$data</code> is an array containing:</p>
 274 <ul>
 275 <li><code>_LOGGEDIN_</code>: true if user is logged in, false otherwise.</li>
 276 <li>All templates data, including links.</li>
 277 </ul>
 278 <h5 id="template-placeholders-3">Template placeholders</h5>
 279 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 280 <p>List of placeholders:</p>
 281 <ul>
 282 <li><code>action_plugin</code>: next to the button &quot;private only&quot; at the top and bottom of the page.</li>
 283 </ul>
 284 <p><img src="http://i.imgur.com/Q12PWg0.png" alt="action_plugin_example" /><a href=".html"></a></p>
 285 <ul>
 286 <li><code>link_plugin</code>: for every link, between permalink and link URL.</li>
 287 </ul>
 288 <p><img src="http://i.imgur.com/3oDPhWx.png" alt="link_plugin_example" /><a href=".html"></a></p>
 289 <ul>
 290 <li><code>plugin_start_zone</code>: before displaying the template content.</li>
 291 </ul>
 292 <p><img src="http://i.imgur.com/OVBkGy3.png" alt="plugin_start_zone_example" /><a href=".html"></a></p>
 293 <ul>
 294 <li><code>plugin_end_zone</code>: after displaying the template content.</li>
 295 </ul>
 296 <p><img src="http://i.imgur.com/6IoRuop.png" alt="plugin_end_zone_example" /><a href=".html"></a></p>
 297 <h4 id="render_editlink">render_editlink</h4>
 298 <p>Triggered when the link edition form is displayed.</p>
 299 <p>Allow to add fields in the form, or display elements.</p>
 300 <h5 id="data-4">Data</h5>
 301 <p><code>$data</code> is an array containing:</p>
 302 <ul>
 303 <li>All templates data.</li>
 304 </ul>
 305 <h5 id="template-placeholders-4">Template placeholders</h5>
 306 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 307 <p>List of placeholders:</p>
 308 <ul>
 309 <li><code>edit_link_plugin</code>: after tags field.</li>
 310 </ul>
 311 <p><img src="http://i.imgur.com/5u17Ens.png" alt="edit_link_plugin_example" /><a href=".html"></a></p>
 312 <h4 id="render_tools">render_tools</h4>
 313 <p>Triggered when the &quot;tools&quot; page is displayed.</p>
 314 <p>Allow to add content at the end of the page.</p>
 315 <h5 id="data-5">Data</h5>
 316 <p><code>$data</code> is an array containing:</p>
 317 <ul>
 318 <li>All templates data.</li>
 319 </ul>
 320 <h5 id="template-placeholders-5">Template placeholders</h5>
 321 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 322 <p>List of placeholders:</p>
 323 <ul>
 324 <li><code>tools_plugin</code>: at the end of the page.</li>
 325 </ul>
 326 <p><img src="http://i.imgur.com/Bqhu9oQ.png" alt="tools_plugin_example" /><a href=".html"></a></p>
 327 <h4 id="render_picwall">render_picwall</h4>
 328 <p>Triggered when picwall is displayed.</p>
 329 <p>Allow to add content at the top and bottom of the page.</p>
 330 <h5 id="data-6">Data</h5>
 331 <p><code>$data</code> is an array containing:</p>
 332 <ul>
 333 <li><code>_LOGGEDIN_</code>: true if user is logged in, false otherwise.</li>
 334 <li>All templates data.</li>
 335 </ul>
 336 <h5 id="template-placeholders-6">Template placeholders</h5>
 337 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 338 <p>List of placeholders:</p>
 339 <ul>
 340 <li><p><code>plugin_start_zone</code>: before displaying the template content.</p></li>
 341 <li><p><code>plugin_end_zone</code>: after displaying the template content.</p></li>
 342 </ul>
 343 <p><img src="http://i.imgur.com/tVTQFER.png" alt="plugin_start_end_zone_example" /><a href=".html"></a></p>
 344 <h4 id="render_tagcloud">render_tagcloud</h4>
 345 <p>Triggered when tagcloud is displayed.</p>
 346 <p>Allow to add content at the top and bottom of the page.</p>
 347 <h5 id="data-7">Data</h5>
 348 <p><code>$data</code> is an array containing:</p>
 349 <ul>
 350 <li><code>_LOGGEDIN_</code>: true if user is logged in, false otherwise.</li>
 351 <li>All templates data.</li>
 352 </ul>
 353 <h5 id="template-placeholders-7">Template placeholders</h5>
 354 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 355 <p>List of placeholders:</p>
 356 <ul>
 357 <li><p><code>plugin_start_zone</code>: before displaying the template content.</p></li>
 358 <li><p><code>plugin_end_zone</code>: after displaying the template content.</p></li>
 359 </ul>
 360 <p><img src="http://i.imgur.com/vHmyT3a.png" alt="plugin_start_end_zone_example" /><a href=".html"></a></p>
 361 <h4 id="render_daily">render_daily</h4>
 362 <p>Triggered when tagcloud is displayed.</p>
 363 <p>Allow to add content at the top and bottom of the page, the bottom of each link and to alter data.</p>
 364 <h5 id="data-8">Data</h5>
 365 <p><code>$data</code> is an array containing:</p>
 366 <ul>
 367 <li><code>_LOGGEDIN_</code>: true if user is logged in, false otherwise.</li>
 368 <li>All templates data, including links.</li>
 369 </ul>
 370 <h5 id="template-placeholders-8">Template placeholders</h5>
 371 <p>Items can be displayed in templates by adding an entry in <code>$data['&lt;placeholder&gt;']</code> array.<a href=".html"></a></p>
 372 <p>List of placeholders:</p>
 373 <ul>
 374 <li><code>link_plugin</code>: used at bottom of each link.</li>
 375 </ul>
 376 <p><img src="http://i.imgur.com/hzhMfSZ.png" alt="link_plugin_example" /><a href=".html"></a></p>
 377 <ul>
 378 <li><p><code>plugin_start_zone</code>: before displaying the template content.</p></li>
 379 <li><p><code>plugin_end_zone</code>: after displaying the template content.</p></li>
 380 </ul>
 381 <h4 id="savelink">savelink</h4>
 382 <p>Triggered when a link is save (new link or edit).</p>
 383 <p>Allow to alter the link being saved in the datastore.</p>
 384 <h5 id="data-9">Data</h5>
 385 <p><code>$data</code> is an array containing the link being saved:</p>
 386 <ul>
 387 <li>title</li>
 388 <li>url</li>
 389 <li>description</li>
 390 <li>linkdate</li>
 391 <li>private</li>
 392 <li>tags</li>
 393 </ul>
 394 <h2 id="guide-for-template-designer">Guide for template designer</h2>
 395 <h3 id="placeholder-system">Placeholder system</h3>
 396 <p>In order to make plugins work with every custom themes, you need to add variable placeholder in your templates.</p>
 397 <p>It's a RainTPL loop like this:</p>
 398 <pre><code>{loop=&quot;$plugin_variable&quot;}
 399     {$value}
 400 {/loop}</code></pre>
 401 <p>You should enable <code>demo_plugin</code> for testing purpose, since it uses every placeholder available.</p>
 402 <h3 id="list-of-placeholders">List of placeholders</h3>
 403 <p><strong>page.header.html</strong></p>
 404 <p>At the end of the menu:</p>
 405 <pre><code>{loop=&quot;$plugins_header.buttons_toolbar&quot;}
 406     {$value}
 407 {/loop}</code></pre>
 408 <p><strong>includes.html</strong></p>
 409 <p>At the end of the file:</p>
 410 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$plugins_includes.css_files&quot;}
 411 <span class="kw">&lt;link</span><span class="ot"> type=</span><span class="st">&quot;text/css&quot;</span><span class="ot"> rel=</span><span class="st">&quot;stylesheet&quot;</span><span class="ot"> href=</span><span class="st">&quot;{$value}#&quot;</span><span class="kw">/&gt;</span>
 412 {/loop}</code></pre>
 413 <p><strong>page.footer.html</strong></p>
 414 <p>At the end of your footer notes:</p>
 415 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$plugins_footer.text&quot;}
 416      {$value}
 417 {/loop}</code></pre>
 418 <p>At the end of file:</p>
 419 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$plugins_footer.js_files&quot;}
 420      <span class="kw">&lt;script</span><span class="ot"> src=</span><span class="st">&quot;{$value}#&quot;</span><span class="kw">&gt;&lt;/script&gt;</span>
 421 {/loop}</code></pre>
 422 <p><strong>linklist.html</strong></p>
 423 <p>After search fields:</p>
 424 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$plugins_header.fields_toolbar&quot;}
 425      {$value}
 426 {/loop}</code></pre>
 427 <p>Before displaying the link list (after paging):</p>
 428 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$plugin_start_zone&quot;}
 429      {$value}
 430 {/loop}</code></pre>
 431 <p>For every links (icons):</p>
 432 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$value.link_plugin&quot;}
 433     <span class="kw">&lt;span&gt;</span>{$value}<span class="kw">&lt;/span&gt;</span>
 434 {/loop}</code></pre>
 435 <p>Before end paging:</p>
 436 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$plugin_end_zone&quot;}
 437      {$value}
 438 {/loop}</code></pre>
 439 <p><strong>linklist.paging.html</strong></p>
 440 <p>After the &quot;private only&quot; icon:</p>
 441 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$action_plugin&quot;}
 442      {$value}
 443 {/loop}</code></pre>
 444 <p><strong>editlink.html</strong></p>
 445 <p>After tags field:</p>
 446 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$edit_link_plugin&quot;}
 447      {$value}
 448 {/loop}</code></pre>
 449 <p><strong>tools.html</strong></p>
 450 <p>After the last tool:</p>
 451 <pre class="sourceCode html"><code class="sourceCode html">{loop=&quot;$tools_plugin&quot;}
 452      {$value}
 453 {/loop}</code></pre>
 454 <p><strong>picwall.html</strong></p>
 455 <p>Top:</p>
 456 <pre class="sourceCode html"><code class="sourceCode html"><span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;plugin_zone_start_picwall&quot;</span><span class="ot"> class=</span><span class="st">&quot;plugin_zone&quot;</span><span class="kw">&gt;</span>
 457     {loop=&quot;$plugin_start_zone&quot;}
 458         {$value}
 459     {/loop}
 460 <span class="kw">&lt;/div&gt;</span></code></pre>
 461 <p>Bottom:</p>
 462 <pre class="sourceCode html"><code class="sourceCode html"><span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;plugin_zone_end_picwall&quot;</span><span class="ot"> class=</span><span class="st">&quot;plugin_zone&quot;</span><span class="kw">&gt;</span>
 463     {loop=&quot;$plugin_end_zone&quot;}
 464         {$value}
 465     {/loop}
 466 <span class="kw">&lt;/div&gt;</span></code></pre>
 467 <p><strong>tagcloud.html</strong></p>
 468 <p>Top:</p>
 469 <pre class="sourceCode html"><code class="sourceCode html">   <span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;plugin_zone_start_tagcloud&quot;</span><span class="ot"> class=</span><span class="st">&quot;plugin_zone&quot;</span><span class="kw">&gt;</span>
 470         {loop=&quot;$plugin_start_zone&quot;}
 471             {$value}
 472         {/loop}
 473     <span class="kw">&lt;/div&gt;</span></code></pre>
 474 <p>Bottom:</p>
 475 <pre class="sourceCode html"><code class="sourceCode html">    <span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;plugin_zone_end_tagcloud&quot;</span><span class="ot"> class=</span><span class="st">&quot;plugin_zone&quot;</span><span class="kw">&gt;</span>
 476         {loop=&quot;$plugin_end_zone&quot;}
 477             {$value}
 478         {/loop}
 479     <span class="kw">&lt;/div&gt;</span></code></pre>
 480 <p><strong>daily.html</strong></p>
 481 <p>Top:</p>
 482 <pre class="sourceCode html"><code class="sourceCode html"><span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;plugin_zone_start_picwall&quot;</span><span class="ot"> class=</span><span class="st">&quot;plugin_zone&quot;</span><span class="kw">&gt;</span>
 483      {loop=&quot;$plugin_start_zone&quot;}
 484          {$value}
 485      {/loop}
 486 <span class="kw">&lt;/div&gt;</span></code></pre>
 487 <p>After every link:</p>
 488 <pre class="sourceCode html"><code class="sourceCode html"><span class="kw">&lt;div</span><span class="ot"> class=</span><span class="st">&quot;dailyEntryFooter&quot;</span><span class="kw">&gt;</span>
 489      {loop=&quot;$link.link_plugin&quot;}
 490           {$value}
 491      {/loop}
 492 <span class="kw">&lt;/div&gt;</span></code></pre>
 493 <p>Bottom:</p>
 494 <pre class="sourceCode html"><code class="sourceCode html"><span class="kw">&lt;div</span><span class="ot"> id=</span><span class="st">&quot;plugin_zone_end_picwall&quot;</span><span class="ot"> class=</span><span class="st">&quot;plugin_zone&quot;</span><span class="kw">&gt;</span>
 495     {loop=&quot;$plugin_end_zone&quot;}
 496         {$value}
 497     {/loop}
 498 <span class="kw">&lt;/div&gt;</span></code></pre>
 499 </body>
 500 </html>