1<!DOCTYPE html><!-- This page is a placeholder for generated extensions api doc. Note:
2    1) The <head> information in this page is significant, should be uniform
3       across api docs and should be edited only with knowledge of the
4       templating mechanism.
5    3) All <body>.innerHTML is genereated as an rendering step. If viewed in a
6       browser, it will be re-generated from the template, json schema and
7       authored overview content.
8    4) The <body>.innerHTML is also generated by an offline step so that this
9       page may easily be indexed by search engines.
10--><html xmlns="http://www.w3.org/1999/xhtml"><head>
11    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
12    <link href="css/ApiRefStyles.css" rel="stylesheet" type="text/css">
13    <link href="css/print.css" rel="stylesheet" type="text/css" media="print">
14    <script type="text/javascript" src="/third_party/jstemplate/jstemplate_compiled.js">
15    </script>
16    <script type="text/javascript" src="js/api_page_generator.js"></script>
17    <script type="text/javascript" src="js/bootstrap.js"></script>
18    <script type="text/javascript" src="js/sidebar.js"></script>
19  <title>chrome.experimental.extension - Google Chrome Extensions - Google Code</title></head>
20  <body>  <div id="gc-container" class="labs">
21      <div id="devModeWarning">
22        You are viewing extension docs in chrome via the 'file:' scheme: are you expecting to see local changes when you refresh? You'll need run chrome with --allow-file-access-from-files.
23      </div>
24      <!-- SUBTEMPLATES: DO NOT MOVE FROM THIS LOCATION -->
25      <!-- In particular, sub-templates that recurse, must be used by allowing
26           jstemplate to make a copy of the template in this section which
27           are not operated on by way of the jsskip="true" -->
28      <div style="display:none">
29
30        <!-- VALUE -->
31        <div id="valueTemplate">
32          <dt>
33            <var>paramName</var>
34              <em>
35
36                <!-- TYPE -->
37                <div style="display:inline">
38                  (
39                    <span class="optional">optional</span>
40                    <span class="enum">enumerated</span>
41                    <span id="typeTemplate">
42                      <span>
43                        <a> Type</a>
44                      </span>
45                      <span>
46                        <span>
47                          array of <span><span></span></span>
48                        </span>
49                        <span>paramType</span>
50                        <span></span>
51                      </span>
52                    </span>
53                  )
54                </div>
55
56              </em>
57          </dt>
58          <dd class="todo">
59            Undocumented.
60          </dd>
61          <dd>
62            Description of this parameter from the json schema.
63          </dd>
64          <dd>
65            This parameter was added in version
66            <b><span></span></b>.
67            You must omit this parameter in earlier versions,
68            and you may omit it in any version.  If you require this
69            parameter, the manifest key
70            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
71            can ensure that your extension won't be run in an earlier browser version.
72          </dd>
73
74          <!-- OBJECT PROPERTIES -->
75          <dd>
76            <dl>
77              <div>
78                <div>
79                </div>
80              </div>
81            </dl>
82          </dd>
83
84          <!-- OBJECT METHODS -->
85          <dd>
86            <div></div>
87          </dd>
88
89          <!-- OBJECT EVENT FIELDS -->
90          <dd>
91            <div></div>
92          </dd>
93
94          <!-- FUNCTION PARAMETERS -->
95          <dd>
96            <div></div>
97          </dd>
98
99        </div> <!-- /VALUE -->
100
101        <div id="functionParametersTemplate">
102          <h5>Parameters</h5>
103          <dl>
104            <div>
105              <div>
106              </div>
107            </div>
108          </dl>
109        </div>
110      </div> <!-- /SUBTEMPLATES -->
111
112  <a id="top"></a>
113    <div id="skipto">
114      <a href="#gc-pagecontent">Skip to page content</a>
115      <a href="#gc-toc">Skip to main navigation</a>
116    </div>
117    <!-- API HEADER -->
118    <table id="header" width="100%" cellspacing="0" border="0">
119      <tbody><tr>
120        <td valign="middle"><a href="http://code.google.com/"><img src="images/code_labs_logo.gif" height="43" width="161" alt="Google Code Labs" style="border:0; margin:0;"></a></td>
121        <td valign="middle" width="100%" style="padding-left:0.6em;">
122          <form action="http://www.google.com/cse" id="cse" style="margin-top:0.5em">
123            <div id="gsc-search-box">
124              <input type="hidden" name="cx" value="002967670403910741006:61_cvzfqtno">
125              <input type="hidden" name="ie" value="UTF-8">
126              <input type="text" name="q" value="" size="55">
127              <input class="gsc-search-button" type="submit" name="sa" value="Search">
128              <br>
129              <span class="greytext">e.g. "page action" or "tabs"</span>
130            </div>
131          </form>
132
133          <script type="text/javascript" src="http://www.google.com/jsapi"></script>
134          <script type="text/javascript">google.load("elements", "1", {packages: "transliteration"});</script>
135          <script type="text/javascript" src="http://www.google.com/coop/cse/t13n?form=cse&t13n_langs=en"></script>
136          <script type="text/javascript" src="http://www.google.com/coop/cse/brand?form=cse&lang=en"></script>
137        </td>
138      </tr>
139    </tbody></table>
140
141    <div id="codesiteContent" class="">
142
143      <a id="gc-topnav-anchor"></a>
144      <div id="gc-topnav">
145        <h1>Google Chrome Extensions (<a href="http://code.google.com/labs/">Labs</a>)</h1>
146        <ul id="home" class="gc-topnav-tabs">
147          <li id="home_link">
148            <a href="index.html" title="Google Chrome Extensions home page">Home</a>
149          </li>
150          <li id="docs_link">
151            <a href="docs.html" title="Official Google Chrome Extensions documentation">Docs</a>
152          </li>
153          <li id="faq_link">
154            <a href="faq.html" title="Answers to frequently asked questions about Google Chrome Extensions">FAQ</a>
155          </li>
156          <li id="samples_link">
157            <a href="samples.html" title="Sample extensions (with source code)">Samples</a>
158          </li>
159          <li id="group_link">
160            <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions" title="Google Chrome Extensions developer forum">Group</a>
161          </li>
162        </ul>
163      </div> <!-- end gc-topnav -->
164
165    <div class="g-section g-tpl-170">
166      <!-- SIDENAV -->
167      <div class="g-unit g-first" id="gc-toc">
168        <ul>
169          <li><a href="getstarted.html">Getting Started</a></li>
170          <li><a href="overview.html">Overview</a></li>
171          <li><a href="whats_new.html">What's New?</a></li>
172          <li><h2><a href="devguide.html">Developer's Guide</a></h2>
173            <ul>
174              <li>Browser UI
175                <ul>
176                  <li><a href="browserAction.html">Browser Actions</a></li>
177                  <li><a href="contextMenus.html">Context Menus</a></li>
178                  <li><a href="notifications.html">Desktop Notifications</a></li>
179                  <li><a href="omnibox.html">Omnibox</a></li>
180                  <li><a href="options.html">Options Pages</a></li>
181                  <li><a href="override.html">Override Pages</a></li>
182                  <li><a href="pageAction.html">Page Actions</a></li>
183                </ul>
184              </li>
185              <li>Browser Interaction
186                <ul>
187                  <li><a href="bookmarks.html">Bookmarks</a></li>
188                  <li><a href="cookies.html">Cookies</a></li>
189                  <li><a href="events.html">Events</a></li>
190                  <li><a href="history.html">History</a></li>
191                  <li><a href="management.html">Management</a></li>
192                  <li><a href="tabs.html">Tabs</a></li>
193                  <li><a href="windows.html">Windows</a></li>
194                </ul>
195              </li>
196              <li>Implementation
197                <ul>
198                  <li><a href="a11y.html">Accessibility</a></li>
199                  <li><a href="background_pages.html">Background Pages</a></li>
200                  <li><a href="content_scripts.html">Content Scripts</a></li>
201                  <li><a href="xhr.html">Cross-Origin XHR</a></li>
202                  <li><a href="idle.html">Idle</a></li>
203                  <li><a href="i18n.html">Internationalization</a></li>
204                  <li><a href="messaging.html">Message Passing</a></li>
205                  <li><a href="npapi.html">NPAPI Plugins</a></li>
206                </ul>
207              </li>
208              <li>Finishing
209                <ul>
210                  <li><a href="hosting.html">Hosting</a></li>
211                  <li><a href="external_extensions.html">Other Deployment Options</a></li>
212                </ul>
213              </li>
214            </ul>
215          </li>
216          <li><h2><a href="apps.html">Packaged Apps</a></h2></li>
217          <li><h2><a href="tutorials.html">Tutorials</a></h2>
218            <ul>
219              <li><a href="tut_debugging.html">Debugging</a></li>
220              <li><a href="tut_analytics.html">Google Analytics</a></li>
221              <li><a href="tut_oauth.html">OAuth</a></li>
222            </ul>
223          </li>
224          <li><h2>Reference</h2>
225            <ul>
226              <li>Formats
227                <ul>
228                  <li><a href="manifest.html">Manifest Files</a></li>
229                  <li><a href="match_patterns.html">Match Patterns</a></li>
230                </ul>
231              </li>
232              <li><a href="permission_warnings.html">Permission Warnings</a></li>
233              <li><a href="api_index.html">chrome.* APIs</a></li>
234              <li><a href="api_other.html">Other APIs</a></li>
235            </ul>
236          </li>
237          <li><h2><a href="samples.html">Samples</a></h2></li>
238          <div class="line"> </div>
239          <li><h2>More</h2>
240            <ul>
241              <li><a href="http://code.google.com/chrome/webstore/docs/index.html">Chrome Web Store</a></li>
242              <li><a href="http://code.google.com/chrome/apps/docs/developers_guide.html">Hosted Apps</a></li>
243              <li><a href="themes.html">Themes</a></li>
244            </ul>
245          </li>
246        </ul>
247      </div>
248      <script>
249        initToggles();
250      </script>
251
252    <div class="g-unit" id="gc-pagecontent">
253      <div id="pageTitle">
254        <h1 class="page_title">chrome.experimental.extension</h1>
255      </div>
256        <!-- TABLE OF CONTENTS -->
257        <div id="toc">
258          <h2>Contents</h2>
259          <ol>
260            <li style="display: none; ">
261              <a>h2Name</a>
262              <ol>
263                <li>
264                  <a>h3Name</a>
265                </li>
266              </ol>
267            </li>
268              <li>
269                <a href="#apiReference">API reference: chrome.experimental.extension</a>
270                <ol>
271                  <li style="display: none; ">
272                    <a href="#properties">Properties</a>
273                    <ol>
274                      <li>
275                        <a href="#property-anchor">propertyName</a>
276                      </li>
277                    </ol>
278                  </li>
279                  <li style="display: none; ">
280                    <a>Methods</a>
281                    <ol>
282                      <li>
283                        <a href="#method-anchor">methodName</a>
284                      </li>
285                    </ol>
286                  </li>
287                  <li style="display: none; ">
288                    <a>Events</a>
289                    <ol>
290                      <li>
291                        <a href="#event-anchor">eventName</a>
292                      </li>
293                    </ol>
294                  </li>
295                  <li>
296                    <a href="#types">Types</a>
297                    <ol>
298                      <li>
299                        <a href="#type-Preference">Preference</a>
300                      </li>
301                    </ol>
302                  </li>
303                </ol>
304              </li>
305          </ol>
306        </div>
307        <!-- /TABLE OF CONTENTS -->
308
309        <!-- Standard content lead-in for experimental API pages -->
310        <p id="classSummary">
311          For information on how to use experimental APIs, see the <a href="experimental.html">chrome.experimental.* APIs</a> page.
312        </p>
313
314        <!-- STATIC CONTENT PLACEHOLDER -->
315        <div id="static"></div>
316
317        <!-- API PAGE -->
318        <div class="apiPage">
319        <a name="apiReference"></a>
320        <h2>API reference: chrome.experimental.extension</h2>
321
322          <!-- PROPERTIES -->
323          <div class="apiGroup" style="display: none; ">
324            <a name="properties"></a>
325            <h3 id="properties">Properties</h3>
326
327            <div>
328              <a></a>
329              <h4>getLastError</h4>
330              <div class="summary">
331                <!-- Note: intentionally longer 80 columns -->
332                <span>chrome.extension</span><span>lastError</span>
333              </div>
334              <div>
335              </div>
336            </div>
337
338          </div> <!-- /apiGroup -->
339
340          <!-- METHODS -->
341          <div id="methodsTemplate" class="apiGroup" style="display: none; ">
342            <a></a>
343            <h3>Methods</h3>
344
345            <!-- iterates over all functions -->
346            <div class="apiItem">
347              <a></a> <!-- method-anchor -->
348              <h4>method name</h4>
349
350              <div class="summary"><span>void</span>
351                  <!-- Note: intentionally longer 80 columns -->
352                  <span>chrome.module.methodName</span>(<span><span>, </span><span></span>
353                      <var><span></span></var></span>)</div>
354
355              <div class="description">
356                <p class="todo">Undocumented.</p>
357                <p>
358                  A description from the json schema def of the function goes here.
359                </p>
360
361                <!-- PARAMETERS -->
362                <h4>Parameters</h4>
363                <dl>
364                  <div>
365                    <div>
366                    </div>
367                  </div>
368                </dl>
369
370                <!-- RETURNS -->
371                <h4>Returns</h4>
372                <dl>
373                  <div>
374                    <div>
375                    </div>
376                  </div>
377                </dl>
378
379                <!-- CALLBACK -->
380                <div>
381                  <div>
382                  <h4>Callback function</h4>
383                  <p>
384                    The callback <em>parameter</em> should specify a function
385                    that looks like this:
386                  </p>
387                  <p>
388                    If you specify the <em>callback</em> parameter, it should
389                    specify a function that looks like this:
390                  </p>
391
392                  <!-- Note: intentionally longer 80 columns -->
393                  <pre>function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>;</pre>
394                  <dl>
395                    <div>
396                      <div>
397                      </div>
398                    </div>
399                  </dl>
400                  </div>
401                </div>
402
403                <!-- MIN_VERSION -->
404                <p>
405                  This function was added in version <b><span></span></b>.
406                  If you require this function, the manifest key
407                  <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
408                  can ensure that your extension won't be run in an earlier browser version.
409                </p>
410              </div> <!-- /description -->
411
412            </div>  <!-- /apiItem -->
413
414          </div>  <!-- /apiGroup -->
415
416          <!-- EVENTS -->
417          <div id="eventsTemplate" class="apiGroup" style="display: none; ">
418            <a></a>
419            <h3>Events</h3>
420            <!-- iterates over all events -->
421            <div class="apiItem">
422              <a></a>
423              <h4>event name</h4>
424
425              <div class="summary">
426                <!-- Note: intentionally longer 80 columns -->
427                <span class="subdued">chrome.bookmarks</span><span>onEvent</span><span class="subdued">.addListener</span>(function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>);
428              </div>
429
430              <div class="description">
431                <p class="todo">Undocumented.</p>
432                <p>
433                  A description from the json schema def of the event goes here.
434                </p>
435
436                <!-- PARAMETERS -->
437                <div>
438                  <h4>Parameters</h4>
439                  <dl>
440                    <div>
441                      <div>
442                      </div>
443                    </div>
444                  </dl>
445                </div>
446              </div> <!-- /decription -->
447
448            </div> <!-- /apiItem -->
449
450          </div> <!-- /apiGroup -->
451
452          <!-- TYPES -->
453          <div class="apiGroup">
454            <a name="types"></a>
455            <h3 id="types">Types</h3>
456
457            <!-- iterates over all types -->
458            <div class="apiItem">
459              <a name="type-Preference"></a>
460              <h4>Preference</h4>
461
462              <div>
463          <dt>
464            <var style="display: none; ">paramName</var>
465              <em>
466
467                <!-- TYPE -->
468                <div style="display:inline">
469                  (
470                    <span class="optional" style="display: none; ">optional</span>
471                    <span class="enum" style="display: none; ">enumerated</span>
472                    <span id="typeTemplate">
473                      <span style="display: none; ">
474                        <a> Type</a>
475                      </span>
476                      <span>
477                        <span style="display: none; ">
478                          array of <span><span></span></span>
479                        </span>
480                        <span>object</span>
481                        <span style="display: none; "></span>
482                      </span>
483                    </span>
484                  )
485                </div>
486
487              </em>
488          </dt>
489          <dd class="todo" style="display: none; ">
490            Undocumented.
491          </dd>
492          <dd>An object which allows access to a preference.</dd>
493          <dd style="display: none; ">
494            This parameter was added in version
495            <b><span></span></b>.
496            You must omit this parameter in earlier versions,
497            and you may omit it in any version.  If you require this
498            parameter, the manifest key
499            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
500            can ensure that your extension won't be run in an earlier browser version.
501          </dd>
502
503          <!-- OBJECT PROPERTIES -->
504          <dd style="display: none; ">
505            <dl>
506              <div>
507                <div>
508                </div>
509              </div>
510            </dl>
511          </dd>
512
513          <!-- OBJECT METHODS -->
514          <dd>
515            <div class="apiGroup" style="">
516            <a name="global-Preference-methods"></a>
517            <h3>Methods of Preference</h3>
518
519            <!-- iterates over all functions -->
520            <div class="apiItem">
521              <a name="method-Preference-clear"></a> <!-- method-anchor -->
522              <h4>clear</h4>
523
524              <div class="summary"><span style="display: none; ">void</span>
525                  <!-- Note: intentionally longer 80 columns -->
526                  <span>preference.clear</span>(<span class="null"><span style="display: none; ">, </span><span>object</span>
527                      <var><span>details</span></var></span><span class="optional"><span>, </span><span>function</span>
528                      <var><span>callback</span></var></span>)</div>
529
530              <div class="description">
531                <p class="todo" style="display: none; ">Undocumented.</p>
532                <p>Clears the setting in the user preferences. This way default settings can become effective again.</p>
533
534                <!-- PARAMETERS -->
535                <h4>Parameters</h4>
536                <dl>
537                  <div>
538                    <div>
539          <dt>
540            <var>details</var>
541              <em>
542
543                <!-- TYPE -->
544                <div style="display:inline">
545                  (
546                    <span class="optional" style="display: none; ">optional</span>
547                    <span class="enum" style="display: none; ">enumerated</span>
548                    <span id="typeTemplate">
549                      <span style="display: none; ">
550                        <a> Type</a>
551                      </span>
552                      <span>
553                        <span style="display: none; ">
554                          array of <span><span></span></span>
555                        </span>
556                        <span>object</span>
557                        <span style="display: none; "></span>
558                      </span>
559                    </span>
560                  )
561                </div>
562
563              </em>
564          </dt>
565          <dd class="todo" style="display: none; ">
566            Undocumented.
567          </dd>
568          <dd>What setting to clear.</dd>
569          <dd style="display: none; ">
570            This parameter was added in version
571            <b><span></span></b>.
572            You must omit this parameter in earlier versions,
573            and you may omit it in any version.  If you require this
574            parameter, the manifest key
575            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
576            can ensure that your extension won't be run in an earlier browser version.
577          </dd>
578
579          <!-- OBJECT PROPERTIES -->
580          <dd>
581            <dl>
582              <div>
583                <div>
584          <dt>
585            <var>incognito</var>
586              <em>
587
588                <!-- TYPE -->
589                <div style="display:inline">
590                  (
591                    <span class="optional">optional</span>
592                    <span class="enum" style="display: none; ">enumerated</span>
593                    <span id="typeTemplate">
594                      <span style="display: none; ">
595                        <a> Type</a>
596                      </span>
597                      <span>
598                        <span style="display: none; ">
599                          array of <span><span></span></span>
600                        </span>
601                        <span>boolean</span>
602                        <span style="display: none; "></span>
603                      </span>
604                    </span>
605                  )
606                </div>
607
608              </em>
609          </dt>
610          <dd class="todo" style="display: none; ">
611            Undocumented.
612          </dd>
613          <dd>Whether to clear the setting for the incognito session only (default false).</dd>
614          <dd style="display: none; ">
615            This parameter was added in version
616            <b><span></span></b>.
617            You must omit this parameter in earlier versions,
618            and you may omit it in any version.  If you require this
619            parameter, the manifest key
620            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
621            can ensure that your extension won't be run in an earlier browser version.
622          </dd>
623
624          <!-- OBJECT PROPERTIES -->
625          <dd style="display: none; ">
626            <dl>
627              <div>
628                <div>
629                </div>
630              </div>
631            </dl>
632          </dd>
633
634          <!-- OBJECT METHODS -->
635          <dd style="display: none; ">
636            <div></div>
637          </dd>
638
639          <!-- OBJECT EVENT FIELDS -->
640          <dd style="display: none; ">
641            <div></div>
642          </dd>
643
644          <!-- FUNCTION PARAMETERS -->
645          <dd style="display: none; ">
646            <div></div>
647          </dd>
648
649        </div>
650              </div>
651            </dl>
652          </dd>
653
654          <!-- OBJECT METHODS -->
655          <dd style="display: none; ">
656            <div></div>
657          </dd>
658
659          <!-- OBJECT EVENT FIELDS -->
660          <dd style="display: none; ">
661            <div></div>
662          </dd>
663
664          <!-- FUNCTION PARAMETERS -->
665          <dd style="display: none; ">
666            <div></div>
667          </dd>
668
669        </div>
670                  </div><div>
671                    <div>
672          <dt>
673            <var>callback</var>
674              <em>
675
676                <!-- TYPE -->
677                <div style="display:inline">
678                  (
679                    <span class="optional">optional</span>
680                    <span class="enum" style="display: none; ">enumerated</span>
681                    <span id="typeTemplate">
682                      <span style="display: none; ">
683                        <a> Type</a>
684                      </span>
685                      <span>
686                        <span style="display: none; ">
687                          array of <span><span></span></span>
688                        </span>
689                        <span>function</span>
690                        <span style="display: none; "></span>
691                      </span>
692                    </span>
693                  )
694                </div>
695
696              </em>
697          </dt>
698          <dd class="todo" style="display: none; ">
699            Undocumented.
700          </dd>
701          <dd>Called after the preference has been cleared.</dd>
702          <dd style="display: none; ">
703            This parameter was added in version
704            <b><span></span></b>.
705            You must omit this parameter in earlier versions,
706            and you may omit it in any version.  If you require this
707            parameter, the manifest key
708            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
709            can ensure that your extension won't be run in an earlier browser version.
710          </dd>
711
712          <!-- OBJECT PROPERTIES -->
713          <dd style="display: none; ">
714            <dl>
715              <div>
716                <div>
717                </div>
718              </div>
719            </dl>
720          </dd>
721
722          <!-- OBJECT METHODS -->
723          <dd style="display: none; ">
724            <div></div>
725          </dd>
726
727          <!-- OBJECT EVENT FIELDS -->
728          <dd style="display: none; ">
729            <div></div>
730          </dd>
731
732          <!-- FUNCTION PARAMETERS -->
733          <dd style="display: none; ">
734            <div></div>
735          </dd>
736
737        </div>
738                  </div>
739                </dl>
740
741                <!-- RETURNS -->
742                <h4 style="display: none; ">Returns</h4>
743                <dl>
744                  <div style="display: none; ">
745                    <div>
746                    </div>
747                  </div>
748                </dl>
749
750                <!-- CALLBACK -->
751                <div>
752                  <div>
753                  <h4>Callback function</h4>
754                  <p style="display: none; ">
755                    The callback <em>parameter</em> should specify a function
756                    that looks like this:
757                  </p>
758                  <p>
759                    If you specify the <em>callback</em> parameter, it should
760                    specify a function that looks like this:
761                  </p>
762
763                  <!-- Note: intentionally longer 80 columns -->
764                  <pre>function(<span></span>) <span class="subdued">{...}</span>;</pre>
765                  <dl>
766                    <div style="display: none; ">
767                      <div>
768                      </div>
769                    </div>
770                  </dl>
771                  </div>
772                </div>
773
774                <!-- MIN_VERSION -->
775                <p style="display: none; ">
776                  This function was added in version <b><span></span></b>.
777                  If you require this function, the manifest key
778                  <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
779                  can ensure that your extension won't be run in an earlier browser version.
780                </p>
781              </div> <!-- /description -->
782
783            </div><div class="apiItem">
784              <a name="method-Preference-get"></a> <!-- method-anchor -->
785              <h4>get</h4>
786
787              <div class="summary"><span style="display: none; ">void</span>
788                  <!-- Note: intentionally longer 80 columns -->
789                  <span>preference.get</span>(<span class="null"><span style="display: none; ">, </span><span>object</span>
790                      <var><span>details</span></var></span><span class="null"><span>, </span><span>function</span>
791                      <var><span>callback</span></var></span>)</div>
792
793              <div class="description">
794                <p class="todo" style="display: none; ">Undocumented.</p>
795                <p>Get the setting from the user preferences.</p>
796
797                <!-- PARAMETERS -->
798                <h4>Parameters</h4>
799                <dl>
800                  <div>
801                    <div>
802          <dt>
803            <var>details</var>
804              <em>
805
806                <!-- TYPE -->
807                <div style="display:inline">
808                  (
809                    <span class="optional" style="display: none; ">optional</span>
810                    <span class="enum" style="display: none; ">enumerated</span>
811                    <span id="typeTemplate">
812                      <span style="display: none; ">
813                        <a> Type</a>
814                      </span>
815                      <span>
816                        <span style="display: none; ">
817                          array of <span><span></span></span>
818                        </span>
819                        <span>object</span>
820                        <span style="display: none; "></span>
821                      </span>
822                    </span>
823                  )
824                </div>
825
826              </em>
827          </dt>
828          <dd class="todo" style="display: none; ">
829            Undocumented.
830          </dd>
831          <dd>What setting to return.</dd>
832          <dd style="display: none; ">
833            This parameter was added in version
834            <b><span></span></b>.
835            You must omit this parameter in earlier versions,
836            and you may omit it in any version.  If you require this
837            parameter, the manifest key
838            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
839            can ensure that your extension won't be run in an earlier browser version.
840          </dd>
841
842          <!-- OBJECT PROPERTIES -->
843          <dd>
844            <dl>
845              <div>
846                <div>
847          <dt>
848            <var>incognito</var>
849              <em>
850
851                <!-- TYPE -->
852                <div style="display:inline">
853                  (
854                    <span class="optional">optional</span>
855                    <span class="enum" style="display: none; ">enumerated</span>
856                    <span id="typeTemplate">
857                      <span style="display: none; ">
858                        <a> Type</a>
859                      </span>
860                      <span>
861                        <span style="display: none; ">
862                          array of <span><span></span></span>
863                        </span>
864                        <span>boolean</span>
865                        <span style="display: none; "></span>
866                      </span>
867                    </span>
868                  )
869                </div>
870
871              </em>
872          </dt>
873          <dd class="todo" style="display: none; ">
874            Undocumented.
875          </dd>
876          <dd>Whether to return the setting that applies to the incognito session (default false).</dd>
877          <dd style="display: none; ">
878            This parameter was added in version
879            <b><span></span></b>.
880            You must omit this parameter in earlier versions,
881            and you may omit it in any version.  If you require this
882            parameter, the manifest key
883            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
884            can ensure that your extension won't be run in an earlier browser version.
885          </dd>
886
887          <!-- OBJECT PROPERTIES -->
888          <dd style="display: none; ">
889            <dl>
890              <div>
891                <div>
892                </div>
893              </div>
894            </dl>
895          </dd>
896
897          <!-- OBJECT METHODS -->
898          <dd style="display: none; ">
899            <div></div>
900          </dd>
901
902          <!-- OBJECT EVENT FIELDS -->
903          <dd style="display: none; ">
904            <div></div>
905          </dd>
906
907          <!-- FUNCTION PARAMETERS -->
908          <dd style="display: none; ">
909            <div></div>
910          </dd>
911
912        </div>
913              </div>
914            </dl>
915          </dd>
916
917          <!-- OBJECT METHODS -->
918          <dd style="display: none; ">
919            <div></div>
920          </dd>
921
922          <!-- OBJECT EVENT FIELDS -->
923          <dd style="display: none; ">
924            <div></div>
925          </dd>
926
927          <!-- FUNCTION PARAMETERS -->
928          <dd style="display: none; ">
929            <div></div>
930          </dd>
931
932        </div>
933                  </div><div>
934                    <div>
935          <dt>
936            <var>callback</var>
937              <em>
938
939                <!-- TYPE -->
940                <div style="display:inline">
941                  (
942                    <span class="optional" style="display: none; ">optional</span>
943                    <span class="enum" style="display: none; ">enumerated</span>
944                    <span id="typeTemplate">
945                      <span style="display: none; ">
946                        <a> Type</a>
947                      </span>
948                      <span>
949                        <span style="display: none; ">
950                          array of <span><span></span></span>
951                        </span>
952                        <span>function</span>
953                        <span style="display: none; "></span>
954                      </span>
955                    </span>
956                  )
957                </div>
958
959              </em>
960          </dt>
961          <dd class="todo">
962            Undocumented.
963          </dd>
964          <dd style="display: none; ">
965            Description of this parameter from the json schema.
966          </dd>
967          <dd style="display: none; ">
968            This parameter was added in version
969            <b><span></span></b>.
970            You must omit this parameter in earlier versions,
971            and you may omit it in any version.  If you require this
972            parameter, the manifest key
973            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
974            can ensure that your extension won't be run in an earlier browser version.
975          </dd>
976
977          <!-- OBJECT PROPERTIES -->
978          <dd style="display: none; ">
979            <dl>
980              <div>
981                <div>
982                </div>
983              </div>
984            </dl>
985          </dd>
986
987          <!-- OBJECT METHODS -->
988          <dd style="display: none; ">
989            <div></div>
990          </dd>
991
992          <!-- OBJECT EVENT FIELDS -->
993          <dd style="display: none; ">
994            <div></div>
995          </dd>
996
997          <!-- FUNCTION PARAMETERS -->
998          <dd style="display: none; ">
999            <div></div>
1000          </dd>
1001
1002        </div>
1003                  </div>
1004                </dl>
1005
1006                <!-- RETURNS -->
1007                <h4 style="display: none; ">Returns</h4>
1008                <dl>
1009                  <div style="display: none; ">
1010                    <div>
1011                    </div>
1012                  </div>
1013                </dl>
1014
1015                <!-- CALLBACK -->
1016                <div>
1017                  <div>
1018                  <h4>Callback function</h4>
1019                  <p>
1020                    The callback <em>parameter</em> should specify a function
1021                    that looks like this:
1022                  </p>
1023                  <p style="display: none; ">
1024                    If you specify the <em>callback</em> parameter, it should
1025                    specify a function that looks like this:
1026                  </p>
1027
1028                  <!-- Note: intentionally longer 80 columns -->
1029                  <pre>function(<span>object details</span>) <span class="subdued">{...}</span>;</pre>
1030                  <dl>
1031                    <div>
1032                      <div>
1033          <dt>
1034            <var>details</var>
1035              <em>
1036
1037                <!-- TYPE -->
1038                <div style="display:inline">
1039                  (
1040                    <span class="optional" style="display: none; ">optional</span>
1041                    <span class="enum" style="display: none; ">enumerated</span>
1042                    <span id="typeTemplate">
1043                      <span style="display: none; ">
1044                        <a> Type</a>
1045                      </span>
1046                      <span>
1047                        <span style="display: none; ">
1048                          array of <span><span></span></span>
1049                        </span>
1050                        <span>object</span>
1051                        <span style="display: none; "></span>
1052                      </span>
1053                    </span>
1054                  )
1055                </div>
1056
1057              </em>
1058          </dt>
1059          <dd class="todo" style="display: none; ">
1060            Undocumented.
1061          </dd>
1062          <dd>Details of the currently effective preference value.</dd>
1063          <dd style="display: none; ">
1064            This parameter was added in version
1065            <b><span></span></b>.
1066            You must omit this parameter in earlier versions,
1067            and you may omit it in any version.  If you require this
1068            parameter, the manifest key
1069            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1070            can ensure that your extension won't be run in an earlier browser version.
1071          </dd>
1072
1073          <!-- OBJECT PROPERTIES -->
1074          <dd>
1075            <dl>
1076              <div>
1077                <div>
1078          <dt>
1079            <var>value</var>
1080              <em>
1081
1082                <!-- TYPE -->
1083                <div style="display:inline">
1084                  (
1085                    <span class="optional" style="display: none; ">optional</span>
1086                    <span class="enum" style="display: none; ">enumerated</span>
1087                    <span id="typeTemplate">
1088                      <span style="display: none; ">
1089                        <a> Type</a>
1090                      </span>
1091                      <span>
1092                        <span style="display: none; ">
1093                          array of <span><span></span></span>
1094                        </span>
1095                        <span>any</span>
1096                        <span style="display: none; "></span>
1097                      </span>
1098                    </span>
1099                  )
1100                </div>
1101
1102              </em>
1103          </dt>
1104          <dd class="todo" style="display: none; ">
1105            Undocumented.
1106          </dd>
1107          <dd>The value of the preference.</dd>
1108          <dd style="display: none; ">
1109            This parameter was added in version
1110            <b><span></span></b>.
1111            You must omit this parameter in earlier versions,
1112            and you may omit it in any version.  If you require this
1113            parameter, the manifest key
1114            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1115            can ensure that your extension won't be run in an earlier browser version.
1116          </dd>
1117
1118          <!-- OBJECT PROPERTIES -->
1119          <dd style="display: none; ">
1120            <dl>
1121              <div>
1122                <div>
1123                </div>
1124              </div>
1125            </dl>
1126          </dd>
1127
1128          <!-- OBJECT METHODS -->
1129          <dd style="display: none; ">
1130            <div></div>
1131          </dd>
1132
1133          <!-- OBJECT EVENT FIELDS -->
1134          <dd style="display: none; ">
1135            <div></div>
1136          </dd>
1137
1138          <!-- FUNCTION PARAMETERS -->
1139          <dd style="display: none; ">
1140            <div></div>
1141          </dd>
1142
1143        </div>
1144              </div><div>
1145                <div>
1146          <dt>
1147            <var>levelOfControl</var>
1148              <em>
1149
1150                <!-- TYPE -->
1151                <div style="display:inline">
1152                  (
1153                    <span class="optional" style="display: none; ">optional</span>
1154                    <span class="enum">enumerated</span>
1155                    <span id="typeTemplate">
1156                      <span style="display: none; ">
1157                        <a> Type</a>
1158                      </span>
1159                      <span>
1160                        <span style="display: none; ">
1161                          array of <span><span></span></span>
1162                        </span>
1163                        <span>string</span>
1164                        <span>["NotControllable", "ControlledByOtherExtensions", "ControllableByThisExtension", "ControlledByThisExtension"]</span>
1165                      </span>
1166                    </span>
1167                  )
1168                </div>
1169
1170              </em>
1171          </dt>
1172          <dd class="todo" style="display: none; ">
1173            Undocumented.
1174          </dd>
1175          <dd>One of<br><var>NotControllable</var>: cannot be controlled by any extension<br><var>ControlledByOtherExtensions</var>: controlled by extensions with higher precedence<br><var>ControllableByThisExtension</var>: can be controlled by this extension<br><var>ControlledByThisExtension</var>: controlled by this extension</dd>
1176          <dd style="display: none; ">
1177            This parameter was added in version
1178            <b><span></span></b>.
1179            You must omit this parameter in earlier versions,
1180            and you may omit it in any version.  If you require this
1181            parameter, the manifest key
1182            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1183            can ensure that your extension won't be run in an earlier browser version.
1184          </dd>
1185
1186          <!-- OBJECT PROPERTIES -->
1187          <dd style="display: none; ">
1188            <dl>
1189              <div>
1190                <div>
1191                </div>
1192              </div>
1193            </dl>
1194          </dd>
1195
1196          <!-- OBJECT METHODS -->
1197          <dd style="display: none; ">
1198            <div></div>
1199          </dd>
1200
1201          <!-- OBJECT EVENT FIELDS -->
1202          <dd style="display: none; ">
1203            <div></div>
1204          </dd>
1205
1206          <!-- FUNCTION PARAMETERS -->
1207          <dd style="display: none; ">
1208            <div></div>
1209          </dd>
1210
1211        </div>
1212              </div><div>
1213                <div>
1214          <dt>
1215            <var>incognitoSpecific</var>
1216              <em>
1217
1218                <!-- TYPE -->
1219                <div style="display:inline">
1220                  (
1221                    <span class="optional">optional</span>
1222                    <span class="enum" style="display: none; ">enumerated</span>
1223                    <span id="typeTemplate">
1224                      <span style="display: none; ">
1225                        <a> Type</a>
1226                      </span>
1227                      <span>
1228                        <span style="display: none; ">
1229                          array of <span><span></span></span>
1230                        </span>
1231                        <span>boolean</span>
1232                        <span style="display: none; "></span>
1233                      </span>
1234                    </span>
1235                  )
1236                </div>
1237
1238              </em>
1239          </dt>
1240          <dd class="todo" style="display: none; ">
1241            Undocumented.
1242          </dd>
1243          <dd>Whether the effective value is specific to the incognito session.<br>This property will <em>only</em> be present if the <var>incognito</var> property in the <var>details</var> parameter of <code>get()</code> was true.</dd>
1244          <dd style="display: none; ">
1245            This parameter was added in version
1246            <b><span></span></b>.
1247            You must omit this parameter in earlier versions,
1248            and you may omit it in any version.  If you require this
1249            parameter, the manifest key
1250            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1251            can ensure that your extension won't be run in an earlier browser version.
1252          </dd>
1253
1254          <!-- OBJECT PROPERTIES -->
1255          <dd style="display: none; ">
1256            <dl>
1257              <div>
1258                <div>
1259                </div>
1260              </div>
1261            </dl>
1262          </dd>
1263
1264          <!-- OBJECT METHODS -->
1265          <dd style="display: none; ">
1266            <div></div>
1267          </dd>
1268
1269          <!-- OBJECT EVENT FIELDS -->
1270          <dd style="display: none; ">
1271            <div></div>
1272          </dd>
1273
1274          <!-- FUNCTION PARAMETERS -->
1275          <dd style="display: none; ">
1276            <div></div>
1277          </dd>
1278
1279        </div>
1280              </div>
1281            </dl>
1282          </dd>
1283
1284          <!-- OBJECT METHODS -->
1285          <dd style="display: none; ">
1286            <div></div>
1287          </dd>
1288
1289          <!-- OBJECT EVENT FIELDS -->
1290          <dd style="display: none; ">
1291            <div></div>
1292          </dd>
1293
1294          <!-- FUNCTION PARAMETERS -->
1295          <dd style="display: none; ">
1296            <div></div>
1297          </dd>
1298
1299        </div>
1300                    </div>
1301                  </dl>
1302                  </div>
1303                </div>
1304
1305                <!-- MIN_VERSION -->
1306                <p style="display: none; ">
1307                  This function was added in version <b><span></span></b>.
1308                  If you require this function, the manifest key
1309                  <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1310                  can ensure that your extension won't be run in an earlier browser version.
1311                </p>
1312              </div> <!-- /description -->
1313
1314            </div><div class="apiItem">
1315              <a name="method-Preference-set"></a> <!-- method-anchor -->
1316              <h4>set</h4>
1317
1318              <div class="summary"><span style="display: none; ">void</span>
1319                  <!-- Note: intentionally longer 80 columns -->
1320                  <span>preference.set</span>(<span class="null"><span style="display: none; ">, </span><span>object</span>
1321                      <var><span>details</span></var></span><span class="optional"><span>, </span><span>function</span>
1322                      <var><span>callback</span></var></span>)</div>
1323
1324              <div class="description">
1325                <p class="todo" style="display: none; ">Undocumented.</p>
1326                <p>Set the setting in the user preferences</p>
1327
1328                <!-- PARAMETERS -->
1329                <h4>Parameters</h4>
1330                <dl>
1331                  <div>
1332                    <div>
1333          <dt>
1334            <var>details</var>
1335              <em>
1336
1337                <!-- TYPE -->
1338                <div style="display:inline">
1339                  (
1340                    <span class="optional" style="display: none; ">optional</span>
1341                    <span class="enum" style="display: none; ">enumerated</span>
1342                    <span id="typeTemplate">
1343                      <span style="display: none; ">
1344                        <a> Type</a>
1345                      </span>
1346                      <span>
1347                        <span style="display: none; ">
1348                          array of <span><span></span></span>
1349                        </span>
1350                        <span>object</span>
1351                        <span style="display: none; "></span>
1352                      </span>
1353                    </span>
1354                  )
1355                </div>
1356
1357              </em>
1358          </dt>
1359          <dd class="todo" style="display: none; ">
1360            Undocumented.
1361          </dd>
1362          <dd>What setting to change.</dd>
1363          <dd style="display: none; ">
1364            This parameter was added in version
1365            <b><span></span></b>.
1366            You must omit this parameter in earlier versions,
1367            and you may omit it in any version.  If you require this
1368            parameter, the manifest key
1369            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1370            can ensure that your extension won't be run in an earlier browser version.
1371          </dd>
1372
1373          <!-- OBJECT PROPERTIES -->
1374          <dd>
1375            <dl>
1376              <div>
1377                <div>
1378          <dt>
1379            <var>value</var>
1380              <em>
1381
1382                <!-- TYPE -->
1383                <div style="display:inline">
1384                  (
1385                    <span class="optional" style="display: none; ">optional</span>
1386                    <span class="enum" style="display: none; ">enumerated</span>
1387                    <span id="typeTemplate">
1388                      <span style="display: none; ">
1389                        <a> Type</a>
1390                      </span>
1391                      <span>
1392                        <span style="display: none; ">
1393                          array of <span><span></span></span>
1394                        </span>
1395                        <span>any</span>
1396                        <span style="display: none; "></span>
1397                      </span>
1398                    </span>
1399                  )
1400                </div>
1401
1402              </em>
1403          </dt>
1404          <dd class="todo" style="display: none; ">
1405            Undocumented.
1406          </dd>
1407          <dd>The value of the preference. <br>Note that every preference has a specific value type, which is described together with the preference. An extension should <em>not</em> set a preference value of a different type.</dd>
1408          <dd style="display: none; ">
1409            This parameter was added in version
1410            <b><span></span></b>.
1411            You must omit this parameter in earlier versions,
1412            and you may omit it in any version.  If you require this
1413            parameter, the manifest key
1414            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1415            can ensure that your extension won't be run in an earlier browser version.
1416          </dd>
1417
1418          <!-- OBJECT PROPERTIES -->
1419          <dd style="display: none; ">
1420            <dl>
1421              <div>
1422                <div>
1423                </div>
1424              </div>
1425            </dl>
1426          </dd>
1427
1428          <!-- OBJECT METHODS -->
1429          <dd style="display: none; ">
1430            <div></div>
1431          </dd>
1432
1433          <!-- OBJECT EVENT FIELDS -->
1434          <dd style="display: none; ">
1435            <div></div>
1436          </dd>
1437
1438          <!-- FUNCTION PARAMETERS -->
1439          <dd style="display: none; ">
1440            <div></div>
1441          </dd>
1442
1443        </div>
1444              </div><div>
1445                <div>
1446          <dt>
1447            <var>incognito</var>
1448              <em>
1449
1450                <!-- TYPE -->
1451                <div style="display:inline">
1452                  (
1453                    <span class="optional">optional</span>
1454                    <span class="enum" style="display: none; ">enumerated</span>
1455                    <span id="typeTemplate">
1456                      <span style="display: none; ">
1457                        <a> Type</a>
1458                      </span>
1459                      <span>
1460                        <span style="display: none; ">
1461                          array of <span><span></span></span>
1462                        </span>
1463                        <span>boolean</span>
1464                        <span style="display: none; "></span>
1465                      </span>
1466                    </span>
1467                  )
1468                </div>
1469
1470              </em>
1471          </dt>
1472          <dd class="todo" style="display: none; ">
1473            Undocumented.
1474          </dd>
1475          <dd>Whether to modify the setting for the incognito session only (default false).</dd>
1476          <dd style="display: none; ">
1477            This parameter was added in version
1478            <b><span></span></b>.
1479            You must omit this parameter in earlier versions,
1480            and you may omit it in any version.  If you require this
1481            parameter, the manifest key
1482            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1483            can ensure that your extension won't be run in an earlier browser version.
1484          </dd>
1485
1486          <!-- OBJECT PROPERTIES -->
1487          <dd style="display: none; ">
1488            <dl>
1489              <div>
1490                <div>
1491                </div>
1492              </div>
1493            </dl>
1494          </dd>
1495
1496          <!-- OBJECT METHODS -->
1497          <dd style="display: none; ">
1498            <div></div>
1499          </dd>
1500
1501          <!-- OBJECT EVENT FIELDS -->
1502          <dd style="display: none; ">
1503            <div></div>
1504          </dd>
1505
1506          <!-- FUNCTION PARAMETERS -->
1507          <dd style="display: none; ">
1508            <div></div>
1509          </dd>
1510
1511        </div>
1512              </div>
1513            </dl>
1514          </dd>
1515
1516          <!-- OBJECT METHODS -->
1517          <dd style="display: none; ">
1518            <div></div>
1519          </dd>
1520
1521          <!-- OBJECT EVENT FIELDS -->
1522          <dd style="display: none; ">
1523            <div></div>
1524          </dd>
1525
1526          <!-- FUNCTION PARAMETERS -->
1527          <dd style="display: none; ">
1528            <div></div>
1529          </dd>
1530
1531        </div>
1532                  </div><div>
1533                    <div>
1534          <dt>
1535            <var>callback</var>
1536              <em>
1537
1538                <!-- TYPE -->
1539                <div style="display:inline">
1540                  (
1541                    <span class="optional">optional</span>
1542                    <span class="enum" style="display: none; ">enumerated</span>
1543                    <span id="typeTemplate">
1544                      <span style="display: none; ">
1545                        <a> Type</a>
1546                      </span>
1547                      <span>
1548                        <span style="display: none; ">
1549                          array of <span><span></span></span>
1550                        </span>
1551                        <span>function</span>
1552                        <span style="display: none; "></span>
1553                      </span>
1554                    </span>
1555                  )
1556                </div>
1557
1558              </em>
1559          </dt>
1560          <dd class="todo" style="display: none; ">
1561            Undocumented.
1562          </dd>
1563          <dd>Called after the preference has been set.</dd>
1564          <dd style="display: none; ">
1565            This parameter was added in version
1566            <b><span></span></b>.
1567            You must omit this parameter in earlier versions,
1568            and you may omit it in any version.  If you require this
1569            parameter, the manifest key
1570            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1571            can ensure that your extension won't be run in an earlier browser version.
1572          </dd>
1573
1574          <!-- OBJECT PROPERTIES -->
1575          <dd style="display: none; ">
1576            <dl>
1577              <div>
1578                <div>
1579                </div>
1580              </div>
1581            </dl>
1582          </dd>
1583
1584          <!-- OBJECT METHODS -->
1585          <dd style="display: none; ">
1586            <div></div>
1587          </dd>
1588
1589          <!-- OBJECT EVENT FIELDS -->
1590          <dd style="display: none; ">
1591            <div></div>
1592          </dd>
1593
1594          <!-- FUNCTION PARAMETERS -->
1595          <dd style="display: none; ">
1596            <div></div>
1597          </dd>
1598
1599        </div>
1600                  </div>
1601                </dl>
1602
1603                <!-- RETURNS -->
1604                <h4 style="display: none; ">Returns</h4>
1605                <dl>
1606                  <div style="display: none; ">
1607                    <div>
1608                    </div>
1609                  </div>
1610                </dl>
1611
1612                <!-- CALLBACK -->
1613                <div>
1614                  <div>
1615                  <h4>Callback function</h4>
1616                  <p style="display: none; ">
1617                    The callback <em>parameter</em> should specify a function
1618                    that looks like this:
1619                  </p>
1620                  <p>
1621                    If you specify the <em>callback</em> parameter, it should
1622                    specify a function that looks like this:
1623                  </p>
1624
1625                  <!-- Note: intentionally longer 80 columns -->
1626                  <pre>function(<span></span>) <span class="subdued">{...}</span>;</pre>
1627                  <dl>
1628                    <div style="display: none; ">
1629                      <div>
1630                      </div>
1631                    </div>
1632                  </dl>
1633                  </div>
1634                </div>
1635
1636                <!-- MIN_VERSION -->
1637                <p style="display: none; ">
1638                  This function was added in version <b><span></span></b>.
1639                  If you require this function, the manifest key
1640                  <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1641                  can ensure that your extension won't be run in an earlier browser version.
1642                </p>
1643              </div> <!-- /description -->
1644
1645            </div>  <!-- /apiItem -->
1646
1647          </div>
1648          </dd>
1649
1650          <!-- OBJECT EVENT FIELDS -->
1651          <dd>
1652            <div class="apiGroup" style="">
1653            <a name="global-Preference-events"></a>
1654            <h3>Events of Preference</h3>
1655            <!-- iterates over all events -->
1656            <div class="apiItem">
1657              <a name="event-Preference-onChange"></a>
1658              <h4>onChange</h4>
1659
1660              <div class="summary">
1661                <!-- Note: intentionally longer 80 columns -->
1662                <span class="subdued">preference.</span><span>onChange</span><span class="subdued">.addListener</span>(function(<span>object details</span>) <span class="subdued">{...}</span>);
1663              </div>
1664
1665              <div class="description">
1666                <p class="todo" style="display: none; ">Undocumented.</p>
1667                <p>Fired when the value of the preference changes.</p>
1668
1669                <!-- PARAMETERS -->
1670                <div>
1671                  <h4>Parameters</h4>
1672                  <dl>
1673                    <div>
1674                      <div>
1675          <dt>
1676            <var>details</var>
1677              <em>
1678
1679                <!-- TYPE -->
1680                <div style="display:inline">
1681                  (
1682                    <span class="optional" style="display: none; ">optional</span>
1683                    <span class="enum" style="display: none; ">enumerated</span>
1684                    <span id="typeTemplate">
1685                      <span style="display: none; ">
1686                        <a> Type</a>
1687                      </span>
1688                      <span>
1689                        <span style="display: none; ">
1690                          array of <span><span></span></span>
1691                        </span>
1692                        <span>object</span>
1693                        <span style="display: none; "></span>
1694                      </span>
1695                    </span>
1696                  )
1697                </div>
1698
1699              </em>
1700          </dt>
1701          <dd class="todo">
1702            Undocumented.
1703          </dd>
1704          <dd style="display: none; ">
1705            Description of this parameter from the json schema.
1706          </dd>
1707          <dd style="display: none; ">
1708            This parameter was added in version
1709            <b><span></span></b>.
1710            You must omit this parameter in earlier versions,
1711            and you may omit it in any version.  If you require this
1712            parameter, the manifest key
1713            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1714            can ensure that your extension won't be run in an earlier browser version.
1715          </dd>
1716
1717          <!-- OBJECT PROPERTIES -->
1718          <dd>
1719            <dl>
1720              <div>
1721                <div>
1722          <dt>
1723            <var>value</var>
1724              <em>
1725
1726                <!-- TYPE -->
1727                <div style="display:inline">
1728                  (
1729                    <span class="optional" style="display: none; ">optional</span>
1730                    <span class="enum" style="display: none; ">enumerated</span>
1731                    <span id="typeTemplate">
1732                      <span style="display: none; ">
1733                        <a> Type</a>
1734                      </span>
1735                      <span>
1736                        <span style="display: none; ">
1737                          array of <span><span></span></span>
1738                        </span>
1739                        <span>any</span>
1740                        <span style="display: none; "></span>
1741                      </span>
1742                    </span>
1743                  )
1744                </div>
1745
1746              </em>
1747          </dt>
1748          <dd class="todo" style="display: none; ">
1749            Undocumented.
1750          </dd>
1751          <dd>The value of the preference.</dd>
1752          <dd style="display: none; ">
1753            This parameter was added in version
1754            <b><span></span></b>.
1755            You must omit this parameter in earlier versions,
1756            and you may omit it in any version.  If you require this
1757            parameter, the manifest key
1758            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1759            can ensure that your extension won't be run in an earlier browser version.
1760          </dd>
1761
1762          <!-- OBJECT PROPERTIES -->
1763          <dd style="display: none; ">
1764            <dl>
1765              <div>
1766                <div>
1767                </div>
1768              </div>
1769            </dl>
1770          </dd>
1771
1772          <!-- OBJECT METHODS -->
1773          <dd style="display: none; ">
1774            <div></div>
1775          </dd>
1776
1777          <!-- OBJECT EVENT FIELDS -->
1778          <dd style="display: none; ">
1779            <div></div>
1780          </dd>
1781
1782          <!-- FUNCTION PARAMETERS -->
1783          <dd style="display: none; ">
1784            <div></div>
1785          </dd>
1786
1787        </div>
1788              </div><div>
1789                <div>
1790          <dt>
1791            <var>levelOfControl</var>
1792              <em>
1793
1794                <!-- TYPE -->
1795                <div style="display:inline">
1796                  (
1797                    <span class="optional" style="display: none; ">optional</span>
1798                    <span class="enum">enumerated</span>
1799                    <span id="typeTemplate">
1800                      <span style="display: none; ">
1801                        <a> Type</a>
1802                      </span>
1803                      <span>
1804                        <span style="display: none; ">
1805                          array of <span><span></span></span>
1806                        </span>
1807                        <span>string</span>
1808                        <span>["NotControllable", "ControlledByOtherExtensions", "ControllableByThisExtension", "ControlledByThisExtension"]</span>
1809                      </span>
1810                    </span>
1811                  )
1812                </div>
1813
1814              </em>
1815          </dt>
1816          <dd class="todo" style="display: none; ">
1817            Undocumented.
1818          </dd>
1819          <dd>One of<br><var>NotControllable</var>: cannot be controlled by any extension<br><var>ControlledByOtherExtensions</var>: controlled by extensions with higher precedence<br><var>ControllableByThisExtension</var>: can be controlled by this extension<br><var>ControlledByThisExtension</var>: controlled by this extension</dd>
1820          <dd style="display: none; ">
1821            This parameter was added in version
1822            <b><span></span></b>.
1823            You must omit this parameter in earlier versions,
1824            and you may omit it in any version.  If you require this
1825            parameter, the manifest key
1826            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1827            can ensure that your extension won't be run in an earlier browser version.
1828          </dd>
1829
1830          <!-- OBJECT PROPERTIES -->
1831          <dd style="display: none; ">
1832            <dl>
1833              <div>
1834                <div>
1835                </div>
1836              </div>
1837            </dl>
1838          </dd>
1839
1840          <!-- OBJECT METHODS -->
1841          <dd style="display: none; ">
1842            <div></div>
1843          </dd>
1844
1845          <!-- OBJECT EVENT FIELDS -->
1846          <dd style="display: none; ">
1847            <div></div>
1848          </dd>
1849
1850          <!-- FUNCTION PARAMETERS -->
1851          <dd style="display: none; ">
1852            <div></div>
1853          </dd>
1854
1855        </div>
1856              </div><div>
1857                <div>
1858          <dt>
1859            <var>incognitoSpecific</var>
1860              <em>
1861
1862                <!-- TYPE -->
1863                <div style="display:inline">
1864                  (
1865                    <span class="optional">optional</span>
1866                    <span class="enum" style="display: none; ">enumerated</span>
1867                    <span id="typeTemplate">
1868                      <span style="display: none; ">
1869                        <a> Type</a>
1870                      </span>
1871                      <span>
1872                        <span style="display: none; ">
1873                          array of <span><span></span></span>
1874                        </span>
1875                        <span>boolean</span>
1876                        <span style="display: none; "></span>
1877                      </span>
1878                    </span>
1879                  )
1880                </div>
1881
1882              </em>
1883          </dt>
1884          <dd class="todo" style="display: none; ">
1885            Undocumented.
1886          </dd>
1887          <dd>Whether the value that has changed is specific to the incognito session.<br>This property will <em>only</em> be present if the user has enabled the extension in incognito mode.</dd>
1888          <dd style="display: none; ">
1889            This parameter was added in version
1890            <b><span></span></b>.
1891            You must omit this parameter in earlier versions,
1892            and you may omit it in any version.  If you require this
1893            parameter, the manifest key
1894            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
1895            can ensure that your extension won't be run in an earlier browser version.
1896          </dd>
1897
1898          <!-- OBJECT PROPERTIES -->
1899          <dd style="display: none; ">
1900            <dl>
1901              <div>
1902                <div>
1903                </div>
1904              </div>
1905            </dl>
1906          </dd>
1907
1908          <!-- OBJECT METHODS -->
1909          <dd style="display: none; ">
1910            <div></div>
1911          </dd>
1912
1913          <!-- OBJECT EVENT FIELDS -->
1914          <dd style="display: none; ">
1915            <div></div>
1916          </dd>
1917
1918          <!-- FUNCTION PARAMETERS -->
1919          <dd style="display: none; ">
1920            <div></div>
1921          </dd>
1922
1923        </div>
1924              </div>
1925            </dl>
1926          </dd>
1927
1928          <!-- OBJECT METHODS -->
1929          <dd style="display: none; ">
1930            <div></div>
1931          </dd>
1932
1933          <!-- OBJECT EVENT FIELDS -->
1934          <dd style="display: none; ">
1935            <div></div>
1936          </dd>
1937
1938          <!-- FUNCTION PARAMETERS -->
1939          <dd style="display: none; ">
1940            <div></div>
1941          </dd>
1942
1943        </div>
1944                    </div>
1945                  </dl>
1946                </div>
1947              </div> <!-- /decription -->
1948
1949            </div> <!-- /apiItem -->
1950
1951          </div>
1952          </dd>
1953
1954          <!-- FUNCTION PARAMETERS -->
1955          <dd style="display: none; ">
1956            <div></div>
1957          </dd>
1958
1959        </div>
1960
1961            </div> <!-- /apiItem -->
1962
1963          </div> <!-- /apiGroup -->
1964
1965        </div> <!-- /apiPage -->
1966      </div> <!-- /gc-pagecontent -->
1967    </div> <!-- /g-section -->
1968  </div> <!-- /codesiteContent -->
1969    <div id="gc-footer" --="">
1970      <div class="text">
1971  <p>
1972  Except as otherwise <a href="http://code.google.com/policies.html#restrictions">noted</a>,
1973  the content of this page is licensed under the <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons
1974  Attribution 3.0 License</a>, and code samples are licensed under the
1975  <a rel="license" href="http://code.google.com/google_bsd_license.html">BSD License</a>.
1976  </p>
1977  <p>
1978  ©2011 Google
1979  </p>
1980
1981<!-- begin analytics -->
1982<script src="http://www.google-analytics.com/urchin.js" type="text/javascript"></script>
1983<script src="http://www.google-analytics.com/ga.js" type="text/javascript"></script>
1984
1985<script type="text/javascript">
1986  // chrome doc tracking
1987  try {
1988    var engdocs = _gat._getTracker("YT-10763712-2");
1989    engdocs._trackPageview();
1990  } catch(err) {}
1991
1992  // code.google.com site-wide tracking
1993  try {
1994    _uacct="UA-18071-1";
1995    _uanchor=1;
1996    _uff=0;
1997    urchinTracker();
1998  }
1999  catch(e) {/* urchinTracker not available. */}
2000</script>
2001<!-- end analytics -->
2002      </div>
2003    </div> <!-- /gc-footer -->
2004  </div> <!-- /gc-container -->
2005</body></html>
2006