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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; 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250 </script> 251 252 <div class="g-unit" id="gc-pagecontent"> 253 <div id="pageTitle"> 254 <h1 class="page_title">Other Deployment Options</h1> 255 </div> 256 <!-- TABLE OF CONTENTS --> 257 <div id="toc"> 258 <h2>Contents</h2> 259 <ol> 260 <li> 261 <a href="#prereqs">Before you begin</a> 262 <ol> 263 <li style="display: none; "> 264 <a>h3Name</a> 265 </li> 266 </ol> 267 </li><li> 268 <a href="#preferences">Using a preferences file</a> 269 <ol> 270 <li style="display: none; "> 271 <a>h3Name</a> 272 </li> 273 </ol> 274 </li><li> 275 <a href="#registry">Using the Windows registry</a> 276 <ol> 277 <li style="display: none; "> 278 <a>h3Name</a> 279 </li> 280 </ol> 281 </li><li> 282 <a href="#updating">Updating and uninstalling</a> 283 <ol> 284 <li style="display: none; "> 285 <a>h3Name</a> 286 </li> 287 </ol> 288 </li><li> 289 <a href="#faq">FAQ</a> 290 <ol> 291 <li style="display: none; "> 292 <a>h3Name</a> 293 </li> 294 </ol> 295 </li> 296 <li style="display: none; "> 297 <a href="#apiReference">API reference</a> 298 <ol> 299 <li> 300 <a href="#properties">Properties</a> 301 <ol> 302 <li> 303 <a href="#property-anchor">propertyName</a> 304 </li> 305 </ol> 306 </li> 307 <li> 308 <a>Methods</a> 309 <ol> 310 <li> 311 <a href="#method-anchor">methodName</a> 312 </li> 313 </ol> 314 </li> 315 <li> 316 <a>Events</a> 317 <ol> 318 <li> 319 <a href="#event-anchor">eventName</a> 320 </li> 321 </ol> 322 </li> 323 <li> 324 <a href="#types">Types</a> 325 <ol> 326 <li> 327 <a href="#id-anchor">id</a> 328 </li> 329 </ol> 330 </li> 331 </ol> 332 </li> 333 </ol> 334 </div> 335 <!-- /TABLE OF CONTENTS --> 336 337 <!-- Standard content lead-in for experimental API pages --> 338 <p id="classSummary" style="display: none; "> 339 For information on how to use experimental APIs, see the <a href="experimental.html">chrome.experimental.* APIs</a> page. 340 </p> 341 342 <!-- STATIC CONTENT PLACEHOLDER --> 343 <div id="static"><div id="pageData-name" class="pageData">Other Deployment Options</div> 344<div id="pageData-showTOC" class="pageData">true</div> 345 346<p> 347Usually, users install their own extensions. 348But sometimes you might want an extension 349to be installed automatically. 350Here are two typical cases: 351</p> 352 353<ul> 354 <li> 355 An extension is associated with some other software, 356 and the extension should be installed 357 whenever the user installs that other software. 358 The extension could also be uninstalled 359 when the user removes that other software. 360 </li> 361 <li> 362 A network admin wants to install the same extensions 363 throughout the company. 364 </li> 365</ul> 366 367<p> 368An extension that's installed automatically is known as an 369<em>external extension</em>. 370Google Chrome supports two ways of 371installing external extensions: 372</p> 373 374<ul> 375 <li> Using a preferences JSON file </li> 376 <li> Using the Windows registry (Windows only) </li> 377</ul> 378 379<p> 380Both ways support installing an extension from a <code>.crx</code> extension 381file on the user's computer. The preferences JSON file also supports installing 382an extension hosted at an 383<a href="autoupdate.html#H2-1">update URL</a>. 384See <a href="hosting.html">hosting</a> for details on hosting an extension. 385</p> 386 387<h2 id="prereqs">Before you begin</h2> 388 389<p> 390First, package a 391<a href="packaging.html"><code>.crx</code> file</a> 392and make sure that it installs successfully. 393</p> 394<p> 395If you wish to install from an 396 <a href="autoupdate.html#H2-1">update URL</a>, ensure that the extension 397is properly <a href="hosting.html">hosted</a>. 398</p> 399 400<p> 401Then, before you edit the preferences file or the registry, 402make a note of the following: 403</p> 404 405<ul> 406 <li> The intended <b>location</b> of the extension's <code>.crx</code> file, 407 or the update URL from which it is served </li> 408 <li> The extension's <b>version</b> 409 (from the manifest file or the <b>chrome://extensions</b> page) </li> 410 <li> The extension's <b>ID</b> 411 (from the <b>chrome://extensions</b> page 412 when you've loaded the packed extension) </li> 413</ul> 414 415<p> 416The following examples assume the version is <code>1.0</code> 417and the ID is <code>aaaaaaaaaabbbbbbbbbbcccccccccc</code>. 418</p> 419 420<h2 id="preferences">Using a preferences file</h2> 421 422<p class="note"> 423<b>Windows note:</b> 424Until <a href="http://crbug.com/41902">bug 41902</a> is fixed, 425you might want to use the <a href="#registry">Windows registry</a> 426instead of the preferences file. 427 428</p> 429 430<ol> 431<li>If you are installing from a file, make the <code>.crx</code> extension 432file available to the machine you want to install the extension on. 433(Copy it to a local directory or to a network share for example, 434<code>\\server\share\extension.crx</code> 435or <code>/home/share/extension.crx</code>.) 436</li> 437<li>Locate the <code>external_extensions.json</code> file 438 under the Google Chrome installation directory. 439 If the file doesn't exist, create it. 440 The location depends on the operating system. 441 <dl> 442 <dt> Windows: </dt> 443 <dd> <code><em>chrome_root</em>\Application\<em>chrome_version</em>\Extensions\</code> 444 <br> 445 Example: <code>c:\Users\Me\AppData\Local\Google\Chrome\Application\6.0.422.0\Extensions\</code> 446 </dd> 447 <dt> Mac OS X: </dt> 448 <dd> <code>/Applications/Google Chrome.app/Contents/Extensions/</code> </dd> 449 <dt> Linux: </dt> 450 <dd> <code>/opt/google/chrome/extensions/</code> <br> 451 <b>Note:</b> Use <code>chmod</code> if necessary 452 to make sure that <code>extensions/external_extensions.json</code> 453 is world-readable. 454 </dd> 455 </dl> 456</li> 457<li> Add an entry to <code>external_extensions.json</code> 458for your extension's ID. If you are installing from a file, specify the 459extension's location and version with fields named "external_crx" and 460"external_version". 461 462Example: 463<pre>{ 464 "aaaaaaaaaabbbbbbbbbbcccccccccc": { 465 "external_crx": "/home/share/extension.crx", 466 "external_version": "1.0" 467 } 468}</pre> 469 470<p class="note"> 471<b>Note:</b> 472You need to escape 473each <code>\</code> character in the location. 474For example, 475<code>\\server\share\extension.crx</code> would be 476<code>"\\\\server\\share\\extension.crx"</code>. 477</p> 478<p> 479If you are installing from an update URL, specify the extension's update URL 480with field name "external_update_url". 481</p> 482Example: 483<pre>{ 484 "aaaaaaaaaabbbbbbbbbbcccccccccc": { 485 "external_update_url": "http://myhost.com/mytestextension/updates.xml" 486 } 487}</pre> 488</li> 489 490<li>Save the JSON file. </li> 491<li>Launch Google Chrome and go to <b>chrome://extensions</b>; 492you should see the extension listed. </li> 493</ol> 494 495<h2 id="registry">Using the Windows registry</h2> 496 497<ol> 498<li>Make the <code>.crx</code> extension file available 499to the machine you want to install the extension on. 500(Copy it to a local directory or to a network share — 501for example, <code>\\server\share\extension.crx</code>.) 502</li> 503<li>Find or create the following key in the 504registry: 505<ul> 506 <li> 32-bit Windows: <code>HKEY_LOCAL_MACHINE\Software\Google\Chrome\Extensions</code> </li> 507 <li> 64-bit Windows: <code>HKEY_LOCAL_MACHINE\Software\Wow6432Node\Google\Chrome\Extensions</code> </li> 508</ul> 509</li> 510 511<li>Create a new key (folder) 512under the <b>Extensions</b> key with the 513same name as the ID of your extension 514(for example, <code>aaaaaaaaaabbbbbbbbbbcccccccccc</code>). 515</li> 516<li>Create two string values (<code>REG_SZ</code>) named "path" and "version", 517 and set them to the extension's location and version. 518 For example: 519<ul> 520 <li>path: <code>\\server\share\extension.crx</code> </li> 521 <li>version: <code>1.0</code> </li> 522</ul> 523</li> 524<li>Launch the browser and go to 525<b>chrome://extensions</b>; you should 526see the extension listed. </li> 527</ol> 528 529<h2 id="updating">Updating and uninstalling</h2> 530 531<p>Google Chrome scans the metadata entries 532in the preferences and registry 533each time the browser starts, and makes 534any necessary changes to the installed 535external extensions. </p> 536 537<p>To update your extension to a new version, 538update the file, and then update the version 539in the preferences or registry. </p> 540 541<p>To uninstall your extension 542(for example, if your software is uninstalled), 543remove the metadata from the preferences file 544or registry. </p> 545 546<h2 id="faq">FAQ</h2> 547 548<p> 549This section answers common questions about external extensions. 550</p> 551 552<br> 553 554<p><b>Can I specify a URL as a path to the external extension?</b> </p> 555<p>Yes, if you host the extension as explained in 556<a href="hosting.html">hosting</a>. 557</p> 558 559<br> 560 561<p><b>What are some common mistakes when installing with the preferences 562file?</b></p> 563<ul> 564 <li> 565 Not specifying the same id/version 566 as the one listed in the <code>.crx</code> </li> 567 <li> 568 <code>external_extensions.json</code> is in the wrong location </li> 569 <li> 570 Syntax error in JSON file 571 (forgetting to separate entries with comma or 572 leaving a trailing comma somewhere) </li> 573 <li> 574 Extra curly brackets around the top level dictionary </li> 575 <li> 576 JSON file entry points to the wrong path 577 to the <code>.crx</code> (or path specified but no filename) </li> 578 <li> 579 Backslashes in UNC path not escaped 580 (for example, <code>"\\server\share\file"</code> is wrong; 581 it should be <code>"\\\\server\\share\\extension"</code>) </li> 582 <li> 583 Permissions problems on a network share </li> 584</ul> 585 586<br> 587 588<p><b>What are some common mistakes when installing with the registry?</b> </p> 589<ul> 590 <li>Not specifying the same id/version 591 as the one listed in the <code>.crx</code> </li> 592 <li>Key created in the wrong location in the registry </li> 593 <li>Registry entry points to the wrong path to the <code>.crx</code> file 594 (or path specified but no filename) </li> 595 <li>Permissions problems on a network share </li> 596</ul> 597 598<br> 599 600<p><b>What if the user uninstalls the extension?</b> </p> 601<p>If the user uninstalls the extension through the UI, it will no 602longer be installed or updated on each startup. In other words, the 603external extension is blacklisted. </p> 604 605<br> 606 607<p><b>How do I get off the blacklist?</b> </p> 608<p>If the user uninstalls your extension, you should respect that 609decision. However, if you (the developer) accidentally uninstalled 610your extension through the UI, 611you can remove the blacklist tag 612by installing the extension normally 613through the UI, and then uninstalling it. </p> 614</div> 615 616 <!-- API PAGE --> 617 <div class="apiPage" style="display: none; "> 618 <a name="apiReference"></a> 619 <h2>API reference: chrome.apiname </h2> 620 621 <!-- PROPERTIES --> 622 <div class="apiGroup"> 623 <a name="properties"></a> 624 <h3 id="properties">Properties</h3> 625 626 <div> 627 <a></a> 628 <h4>getLastError</h4> 629 <div class="summary"> 630 <!-- Note: intentionally longer 80 columns --> 631 <span>chrome.extension</span><span>lastError</span> 632 </div> 633 <div> 634 </div> 635 </div> 636 637 </div> <!-- /apiGroup --> 638 639 <!-- METHODS --> 640 <div id="methodsTemplate" class="apiGroup"> 641 <a></a> 642 <h3>Methods</h3> 643 644 <!-- iterates over all functions --> 645 <div class="apiItem"> 646 <a></a> <!-- method-anchor --> 647 <h4>method name</h4> 648 649 <div class="summary"><span>void</span> 650 <!-- Note: intentionally longer 80 columns --> 651 <span>chrome.module.methodName</span>(<span><span>, </span><span></span> 652 <var><span></span></var></span>)</div> 653 654 <div class="description"> 655 <p class="todo">Undocumented.</p> 656 <p> 657 A description from the json schema def of the function goes here. 658 </p> 659 660 <!-- PARAMETERS --> 661 <h4>Parameters</h4> 662 <dl> 663 <div> 664 <div> 665 </div> 666 </div> 667 </dl> 668 669 <!-- RETURNS --> 670 <h4>Returns</h4> 671 <dl> 672 <div> 673 <div> 674 </div> 675 </div> 676 </dl> 677 678 <!-- CALLBACK --> 679 <div> 680 <div> 681 <h4>Callback function</h4> 682 <p> 683 The callback <em>parameter</em> should specify a function 684 that looks like this: 685 </p> 686 <p> 687 If you specify the <em>callback</em> parameter, it should 688 specify a function that looks like this: 689 </p> 690 691 <!-- Note: intentionally longer 80 columns --> 692 <pre>function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>;</pre> 693 <dl> 694 <div> 695 <div> 696 </div> 697 </div> 698 </dl> 699 </div> 700 </div> 701 702 <!-- MIN_VERSION --> 703 <p> 704 This function was added in version <b><span></span></b>. 705 If you require this function, the manifest key 706 <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a> 707 can ensure that your extension won't be run in an earlier browser version. 708 </p> 709 </div> <!-- /description --> 710 711 </div> <!-- /apiItem --> 712 713 </div> <!-- /apiGroup --> 714 715 <!-- EVENTS --> 716 <div id="eventsTemplate" class="apiGroup"> 717 <a></a> 718 <h3>Events</h3> 719 <!-- iterates over all events --> 720 <div class="apiItem"> 721 <a></a> 722 <h4>event name</h4> 723 724 <div class="summary"> 725 <!-- Note: intentionally longer 80 columns --> 726 <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>); 727 </div> 728 729 <div class="description"> 730 <p class="todo">Undocumented.</p> 731 <p> 732 A description from the json schema def of the event goes here. 733 </p> 734 735 <!-- PARAMETERS --> 736 <div> 737 <h4>Parameters</h4> 738 <dl> 739 <div> 740 <div> 741 </div> 742 </div> 743 </dl> 744 </div> 745 </div> <!-- /decription --> 746 747 </div> <!-- /apiItem --> 748 749 </div> <!-- /apiGroup --> 750 751 <!-- TYPES --> 752 <div class="apiGroup"> 753 <a name="types"></a> 754 <h3 id="types">Types</h3> 755 756 <!-- iterates over all types --> 757 <div class="apiItem"> 758 <a></a> 759 <h4>type name</h4> 760 761 <div> 762 </div> 763 764 </div> <!-- /apiItem --> 765 766 </div> <!-- /apiGroup --> 767 768 </div> <!-- /apiPage --> 769 </div> <!-- /gc-pagecontent --> 770 </div> <!-- /g-section --> 771 </div> <!-- /codesiteContent --> 772 <div id="gc-footer" --=""> 773 <div class="text"> 774 <p> 775 Except as otherwise <a href="http://code.google.com/policies.html#restrictions">noted</a>, 776 the content of this page is licensed under the <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons 777 Attribution 3.0 License</a>, and code samples are licensed under the 778 <a rel="license" href="http://code.google.com/google_bsd_license.html">BSD License</a>. 779 </p> 780 <p> 781 ©2011 Google 782 </p> 783 784<!-- begin analytics --> 785<script src="http://www.google-analytics.com/urchin.js" type="text/javascript"></script> 786<script src="http://www.google-analytics.com/ga.js" type="text/javascript"></script> 787 788<script type="text/javascript"> 789 // chrome doc tracking 790 try { 791 var engdocs = _gat._getTracker("YT-10763712-2"); 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