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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // This script contains privileged chrome extension related javascript APIs. | |
| 6 // It is loaded by pages whose URL has the chrome-extension protocol. | |
| 7 | |
| 8 var chrome = chrome || {}; | |
| 9 (function() { | |
| 10 native function GetExtensionAPIDefinition(); | |
| 11 native function StartRequest(); | |
| 12 native function GetChromeHidden(); | |
| 13 native function GetNextRequestId(); | |
| 14 native function Print(); | |
| 15 | |
| 16 native function GetCurrentPageActions(extensionId); | |
| 17 native function GetExtensionViews(); | |
| 18 native function GetNextContextMenuId(); | |
| 19 native function GetNextTtsEventId(); | |
| 20 native function OpenChannelToTab(); | |
| 21 native function GetRenderViewId(); | |
| 22 native function SetIconCommon(); | |
| 23 native function GetUniqueSubEventName(eventName); | |
| 24 native function GetLocalFileSystem(name, path); | |
| 25 native function DecodeJPEG(jpeg_image); | |
| 26 | |
| 27 var chromeHidden = GetChromeHidden(); | |
| 28 | |
| 29 if (!chrome) | |
| 30 chrome = {}; | |
| 31 | |
| 32 function forEach(dict, f) { | |
| 33 for (key in dict) { | |
| 34 if (dict.hasOwnProperty(key)) | |
| 35 f(key, dict[key]); | |
| 36 } | |
| 37 } | |
| 38 | |
| 39 // Validate arguments. | |
| 40 chromeHidden.validationTypes = []; | |
| 41 chromeHidden.validate = function(args, schemas) { | |
| 42 if (args.length > schemas.length) | |
| 43 throw new Error("Too many arguments."); | |
| 44 | |
| 45 for (var i = 0; i < schemas.length; i++) { | |
| 46 if (i in args && args[i] !== null && args[i] !== undefined) { | |
| 47 var validator = new chromeHidden.JSONSchemaValidator(); | |
| 48 validator.addTypes(chromeHidden.validationTypes); | |
| 49 validator.validate(args[i], schemas[i]); | |
| 50 if (validator.errors.length == 0) | |
| 51 continue; | |
| 52 | |
| 53 var message = "Invalid value for argument " + (i + 1) + ". "; | |
| 54 for (var i = 0, err; err = validator.errors[i]; i++) { | |
| 55 if (err.path) { | |
| 56 message += "Property '" + err.path + "': "; | |
| 57 } | |
| 58 message += err.message; | |
| 59 message = message.substring(0, message.length - 1); | |
| 60 message += ", "; | |
| 61 } | |
| 62 message = message.substring(0, message.length - 2); | |
| 63 message += "."; | |
| 64 | |
| 65 throw new Error(message); | |
| 66 } else if (!schemas[i].optional) { | |
| 67 throw new Error("Parameter " + (i + 1) + " is required."); | |
| 68 } | |
| 69 } | |
| 70 }; | |
| 71 | |
| 72 // Callback handling. | |
| 73 var requests = []; | |
| 74 chromeHidden.handleResponse = function(requestId, name, | |
| 75 success, response, error) { | |
| 76 try { | |
| 77 var request = requests[requestId]; | |
| 78 if (success) { | |
| 79 delete chrome.extension.lastError; | |
| 80 } else { | |
| 81 if (!error) { | |
| 82 error = "Unknown error."; | |
| 83 } | |
| 84 console.error("Error during " + name + ": " + error); | |
| 85 chrome.extension.lastError = { | |
| 86 "message": error | |
| 87 }; | |
| 88 } | |
| 89 | |
| 90 if (request.customCallback) { | |
| 91 request.customCallback(name, request, response); | |
| 92 } | |
| 93 | |
| 94 if (request.callback) { | |
| 95 // Callbacks currently only support one callback argument. | |
| 96 var callbackArgs = response ? [chromeHidden.JSON.parse(response)] : []; | |
| 97 | |
| 98 // Validate callback in debug only -- and only when the | |
| 99 // caller has provided a callback. Implementations of api | |
| 100 // calls my not return data if they observe the caller | |
| 101 // has not provided a callback. | |
| 102 if (chromeHidden.validateCallbacks && !error) { | |
| 103 try { | |
| 104 if (!request.callbackSchema.parameters) { | |
| 105 throw "No callback schemas defined"; | |
| 106 } | |
| 107 | |
| 108 if (request.callbackSchema.parameters.length > 1) { | |
| 109 throw "Callbacks may only define one parameter"; | |
| 110 } | |
| 111 | |
| 112 chromeHidden.validate(callbackArgs, | |
| 113 request.callbackSchema.parameters); | |
| 114 } catch (exception) { | |
| 115 return "Callback validation error during " + name + " -- " + | |
| 116 exception.stack; | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 if (response) { | |
| 121 request.callback(callbackArgs[0]); | |
| 122 } else { | |
| 123 request.callback(); | |
| 124 } | |
| 125 } | |
| 126 } finally { | |
| 127 delete requests[requestId]; | |
| 128 delete chrome.extension.lastError; | |
| 129 } | |
| 130 | |
| 131 return undefined; | |
| 132 }; | |
| 133 | |
| 134 function prepareRequest(args, argSchemas) { | |
| 135 var request = {}; | |
| 136 var argCount = args.length; | |
| 137 | |
| 138 // Look for callback param. | |
| 139 if (argSchemas.length > 0 && | |
| 140 args.length == argSchemas.length && | |
| 141 argSchemas[argSchemas.length - 1].type == "function") { | |
| 142 request.callback = args[argSchemas.length - 1]; | |
| 143 request.callbackSchema = argSchemas[argSchemas.length - 1]; | |
| 144 --argCount; | |
| 145 } | |
| 146 | |
| 147 request.args = []; | |
| 148 for (var k = 0; k < argCount; k++) { | |
| 149 request.args[k] = args[k]; | |
| 150 } | |
| 151 | |
| 152 return request; | |
| 153 } | |
| 154 | |
| 155 // Send an API request and optionally register a callback. | |
| 156 // |opt_args| is an object with optional parameters as follows: | |
| 157 // - noStringify: true if we should not stringify the request arguments. | |
| 158 // - customCallback: a callback that should be called instead of the standard | |
| 159 // callback. | |
| 160 // - nativeFunction: the v8 native function to handle the request, or | |
| 161 // StartRequest if missing. | |
| 162 // - forIOThread: true if this function should be handled on the browser IO | |
| 163 // thread. | |
| 164 function sendRequest(functionName, args, argSchemas, opt_args) { | |
| 165 if (!opt_args) | |
| 166 opt_args = {}; | |
| 167 var request = prepareRequest(args, argSchemas); | |
| 168 if (opt_args.customCallback) { | |
| 169 request.customCallback = opt_args.customCallback; | |
| 170 } | |
| 171 // JSON.stringify doesn't support a root object which is undefined. | |
| 172 if (request.args === undefined) | |
| 173 request.args = null; | |
| 174 | |
| 175 var sargs = opt_args.noStringify ? | |
| 176 request.args : chromeHidden.JSON.stringify(request.args); | |
| 177 var nativeFunction = opt_args.nativeFunction || StartRequest; | |
| 178 | |
| 179 var requestId = GetNextRequestId(); | |
| 180 requests[requestId] = request; | |
| 181 var hasCallback = | |
| 182 (request.callback || opt_args.customCallback) ? true : false; | |
| 183 return nativeFunction(functionName, sargs, requestId, hasCallback, | |
| 184 opt_args.forIOThread); | |
| 185 } | |
| 186 | |
| 187 // --- Setup additional api's not currently handled in common/extensions/api | |
| 188 | |
| 189 // WebRequestEvent object. This is used for special webRequest events with | |
| 190 // extra parameters. Each invocation of addListener creates a new named | |
| 191 // sub-event. That sub-event is associated with the extra parameters in the | |
| 192 // browser process, so that only it is dispatched when the main event occurs | |
| 193 // matching the extra parameters. | |
| 194 // | |
| 195 // Example: | |
| 196 // chrome.webRequest.onBeforeRequest.addListener( | |
| 197 // callback, {urls: "http://*.google.com/*"}); | |
| 198 // ^ callback will only be called for onBeforeRequests matching the filter. | |
| 199 chrome.WebRequestEvent = | |
| 200 function(eventName, opt_argSchemas, opt_extraArgSchemas) { | |
| 201 if (typeof eventName != "string") | |
| 202 throw new Error("chrome.WebRequestEvent requires an event name."); | |
| 203 | |
| 204 this.eventName_ = eventName; | |
| 205 this.argSchemas_ = opt_argSchemas; | |
| 206 this.extraArgSchemas_ = opt_extraArgSchemas; | |
| 207 this.subEvents_ = []; | |
| 208 }; | |
| 209 | |
| 210 // Test if the given callback is registered for this event. | |
| 211 chrome.WebRequestEvent.prototype.hasListener = function(cb) { | |
| 212 return this.findListener_(cb) > -1; | |
| 213 }; | |
| 214 | |
| 215 // Test if any callbacks are registered fur thus event. | |
| 216 chrome.WebRequestEvent.prototype.hasListeners = function(cb) { | |
| 217 return this.subEvents_.length > 0; | |
| 218 }; | |
| 219 | |
| 220 // Registers a callback to be called when this event is dispatched. If | |
| 221 // opt_filter is specified, then the callback is only called for events that | |
| 222 // match the given filters. If opt_extraInfo is specified, the given optional | |
| 223 // info is sent to the callback. | |
| 224 chrome.WebRequestEvent.prototype.addListener = | |
| 225 function(cb, opt_filter, opt_extraInfo) { | |
| 226 var subEventName = GetUniqueSubEventName(this.eventName_); | |
| 227 // Note: this could fail to validate, in which case we would not add the | |
| 228 // subEvent listener. | |
| 229 chromeHidden.validate(Array.prototype.slice.call(arguments, 1), | |
| 230 this.extraArgSchemas_); | |
| 231 chrome.experimental.webRequest.addEventListener( | |
| 232 cb, opt_filter, opt_extraInfo, this.eventName_, subEventName); | |
| 233 | |
| 234 var subEvent = new chrome.Event(subEventName, this.argSchemas_); | |
| 235 var subEventCallback = cb; | |
| 236 if (opt_extraInfo && opt_extraInfo.indexOf("blocking") >= 0) { | |
| 237 var eventName = this.eventName_; | |
| 238 subEventCallback = function() { | |
| 239 var requestId = arguments[0].requestId; | |
| 240 try { | |
| 241 var result = cb.apply(null, arguments); | |
| 242 chrome.experimental.webRequest.eventHandled( | |
| 243 eventName, subEventName, requestId, result); | |
| 244 } catch (e) { | |
| 245 chrome.experimental.webRequest.eventHandled( | |
| 246 eventName, subEventName, requestId); | |
| 247 throw e; | |
| 248 } | |
| 249 }; | |
| 250 } | |
| 251 this.subEvents_.push( | |
| 252 {subEvent: subEvent, callback: cb, subEventCallback: subEventCallback}); | |
| 253 subEvent.addListener(subEventCallback); | |
| 254 }; | |
| 255 | |
| 256 // Unregisters a callback. | |
| 257 chrome.WebRequestEvent.prototype.removeListener = function(cb) { | |
| 258 var idx = this.findListener_(cb); | |
| 259 if (idx < 0) { | |
| 260 return; | |
| 261 } | |
| 262 | |
| 263 var e = this.subEvents_[idx]; | |
| 264 e.subEvent.removeListener(e.subEventCallback); | |
| 265 if (e.subEvent.hasListeners()) { | |
| 266 console.error( | |
| 267 "Internal error: webRequest subEvent has orphaned listeners."); | |
| 268 } | |
| 269 this.subEvents_.splice(idx, 1); | |
| 270 }; | |
| 271 | |
| 272 chrome.WebRequestEvent.prototype.findListener_ = function(cb) { | |
| 273 for (var i in this.subEvents_) { | |
| 274 var e = this.subEvents_[i]; | |
| 275 if (e.callback === cb) { | |
| 276 if (e.subEvent.findListener_(e.subEventCallback) > -1) | |
| 277 return i; | |
| 278 console.error("Internal error: webRequest subEvent has no callback."); | |
| 279 } | |
| 280 } | |
| 281 | |
| 282 return -1; | |
| 283 }; | |
| 284 | |
| 285 function CustomBindingsObject() { | |
| 286 } | |
| 287 CustomBindingsObject.prototype.setSchema = function(schema) { | |
| 288 // The functions in the schema are in list form, so we move them into a | |
| 289 // dictionary for easier access. | |
| 290 var self = this; | |
| 291 self.parameters = {}; | |
| 292 schema.functions.forEach(function(f) { | |
| 293 self.parameters[f.name] = f.parameters; | |
| 294 }); | |
| 295 }; | |
| 296 | |
| 297 function extendSchema(schema) { | |
| 298 var extendedSchema = schema.slice(); | |
| 299 extendedSchema.unshift({'type': 'string'}); | |
| 300 return extendedSchema; | |
| 301 } | |
| 302 | |
| 303 var customBindings = {}; | |
| 304 | |
| 305 function setupChromeSetting() { | |
| 306 function ChromeSetting(prefKey, valueSchema) { | |
| 307 this.get = function(details, callback) { | |
| 308 var getSchema = this.parameters.get; | |
| 309 chromeHidden.validate([details, callback], getSchema); | |
| 310 return sendRequest('types.ChromeSetting.get', | |
| 311 [prefKey, details, callback], | |
| 312 extendSchema(getSchema)); | |
| 313 }; | |
| 314 this.set = function(details, callback) { | |
| 315 var setSchema = this.parameters.set.slice(); | |
| 316 setSchema[0].properties.value = valueSchema; | |
| 317 chromeHidden.validate([details, callback], setSchema); | |
| 318 return sendRequest('types.ChromeSetting.set', | |
| 319 [prefKey, details, callback], | |
| 320 extendSchema(setSchema)); | |
| 321 }; | |
| 322 this.clear = function(details, callback) { | |
| 323 var clearSchema = this.parameters.clear; | |
| 324 chromeHidden.validate([details, callback], clearSchema); | |
| 325 return sendRequest('types.ChromeSetting.clear', | |
| 326 [prefKey, details, callback], | |
| 327 extendSchema(clearSchema)); | |
| 328 }; | |
| 329 this.onChange = new chrome.Event('types.ChromeSetting.' + prefKey + | |
| 330 '.onChange'); | |
| 331 }; | |
| 332 ChromeSetting.prototype = new CustomBindingsObject(); | |
| 333 customBindings['ChromeSetting'] = ChromeSetting; | |
| 334 } | |
| 335 | |
| 336 function setupContentSetting() { | |
| 337 function ContentSetting(contentType, settingSchema) { | |
| 338 this.get = function(details, callback) { | |
| 339 var getSchema = this.parameters.get; | |
| 340 chromeHidden.validate([details, callback], getSchema); | |
| 341 return sendRequest('experimental.contentSettings.get', | |
| 342 [contentType, details, callback], | |
| 343 extendSchema(getSchema)); | |
| 344 }; | |
| 345 this.set = function(details, callback) { | |
| 346 var setSchema = this.parameters.set.slice(); | |
| 347 setSchema[0].properties.setting = settingSchema; | |
| 348 chromeHidden.validate([details, callback], setSchema); | |
| 349 return sendRequest('experimental.contentSettings.set', | |
| 350 [contentType, details, callback], | |
| 351 extendSchema(setSchema)); | |
| 352 }; | |
| 353 this.clear = function(details, callback) { | |
| 354 var clearSchema = this.parameters.clear; | |
| 355 chromeHidden.validate([details, callback], clearSchema); | |
| 356 return sendRequest('experimental.contentSettings.clear', | |
| 357 [contentType, details, callback], | |
| 358 extendSchema(clearSchema)); | |
| 359 }; | |
| 360 this.getResourceIdentifiers = function(callback) { | |
| 361 var schema = this.parameters.getResourceIdentifiers; | |
| 362 chromeHidden.validate([callback], schema); | |
| 363 return sendRequest( | |
| 364 'experimental.contentSettings.getResourceIdentifiers', | |
| 365 [contentType, callback], | |
| 366 extendSchema(schema)); | |
| 367 }; | |
| 368 } | |
| 369 ContentSetting.prototype = new CustomBindingsObject(); | |
| 370 customBindings['ContentSetting'] = ContentSetting; | |
| 371 } | |
| 372 | |
| 373 function setupInputEvents() { | |
| 374 chrome.experimental.input.onKeyEvent.dispatch = | |
| 375 function(engineID, keyData) { | |
| 376 var args = Array.prototype.slice.call(arguments); | |
| 377 if (this.validate_) { | |
| 378 var validationErrors = this.validate_(args); | |
| 379 if (validationErrors) { | |
| 380 chrome.experimental.input.eventHandled(requestId, false); | |
| 381 return validationErrors; | |
| 382 } | |
| 383 } | |
| 384 if (this.listeners_.length > 1) { | |
| 385 console.error("Too many listeners for 'onKeyEvent': " + e.stack); | |
| 386 chrome.experimental.input.eventHandled(requestId, false); | |
| 387 return; | |
| 388 } | |
| 389 for (var i = 0; i < this.listeners_.length; i++) { | |
| 390 try { | |
| 391 var requestId = keyData.requestId; | |
| 392 var result = this.listeners_[i].apply(null, args); | |
| 393 chrome.experimental.input.eventHandled(requestId, result); | |
| 394 } catch (e) { | |
| 395 console.error("Error in event handler for 'onKeyEvent': " + e.stack); | |
| 396 chrome.experimental.input.eventHandled(requestId, false); | |
| 397 } | |
| 398 } | |
| 399 }; | |
| 400 } | |
| 401 | |
| 402 // Page action events send (pageActionId, {tabId, tabUrl}). | |
| 403 function setupPageActionEvents(extensionId) { | |
| 404 var pageActions = GetCurrentPageActions(extensionId); | |
| 405 | |
| 406 var oldStyleEventName = "pageActions"; | |
| 407 // TODO(EXTENSIONS_DEPRECATED): only one page action | |
| 408 for (var i = 0; i < pageActions.length; ++i) { | |
| 409 // Setup events for each extension_id/page_action_id string we find. | |
| 410 chrome.pageActions[pageActions[i]] = new chrome.Event(oldStyleEventName); | |
| 411 } | |
| 412 } | |
| 413 | |
| 414 function setupToolstripEvents(renderViewId) { | |
| 415 chrome.toolstrip = chrome.toolstrip || {}; | |
| 416 chrome.toolstrip.onExpanded = | |
| 417 new chrome.Event("toolstrip.onExpanded." + renderViewId); | |
| 418 chrome.toolstrip.onCollapsed = | |
| 419 new chrome.Event("toolstrip.onCollapsed." + renderViewId); | |
| 420 } | |
| 421 | |
| 422 function setupHiddenContextMenuEvent(extensionId) { | |
| 423 chromeHidden.contextMenus = {}; | |
| 424 chromeHidden.contextMenus.handlers = {}; | |
| 425 var eventName = "contextMenus"; | |
| 426 chromeHidden.contextMenus.event = new chrome.Event(eventName); | |
| 427 chromeHidden.contextMenus.ensureListenerSetup = function() { | |
| 428 if (chromeHidden.contextMenus.listening) { | |
| 429 return; | |
| 430 } | |
| 431 chromeHidden.contextMenus.listening = true; | |
| 432 chromeHidden.contextMenus.event.addListener(function() { | |
| 433 // An extension context menu item has been clicked on - fire the onclick | |
| 434 // if there is one. | |
| 435 var id = arguments[0].menuItemId; | |
| 436 var onclick = chromeHidden.contextMenus.handlers[id]; | |
| 437 if (onclick) { | |
| 438 onclick.apply(null, arguments); | |
| 439 } | |
| 440 }); | |
| 441 }; | |
| 442 } | |
| 443 | |
| 444 // Parses the xml syntax supported by omnibox suggestion results. Returns an | |
| 445 // object with two properties: 'description', which is just the text content, | |
| 446 // and 'descriptionStyles', which is an array of style objects in a format | |
| 447 // understood by the C++ backend. | |
| 448 function parseOmniboxDescription(input) { | |
| 449 var domParser = new DOMParser(); | |
| 450 | |
| 451 // The XML parser requires a single top-level element, but we want to | |
| 452 // support things like 'hello, <match>world</match>!'. So we wrap the | |
| 453 // provided text in generated root level element. | |
| 454 var root = domParser.parseFromString( | |
| 455 '<fragment>' + input + '</fragment>', 'text/xml'); | |
| 456 | |
| 457 // DOMParser has a terrible error reporting facility. Errors come out nested | |
| 458 // inside the returned document. | |
| 459 var error = root.querySelector('parsererror div'); | |
| 460 if (error) { | |
| 461 throw new Error(error.textContent); | |
| 462 } | |
| 463 | |
| 464 // Otherwise, it's valid, so build up the result. | |
| 465 var result = { | |
| 466 description: '', | |
| 467 descriptionStyles: [] | |
| 468 }; | |
| 469 | |
| 470 // Recursively walk the tree. | |
| 471 (function(node) { | |
| 472 for (var i = 0, child; child = node.childNodes[i]; i++) { | |
| 473 // Append text nodes to our description. | |
| 474 if (child.nodeType == Node.TEXT_NODE) { | |
| 475 result.description += child.nodeValue; | |
| 476 continue; | |
| 477 } | |
| 478 | |
| 479 // Process and descend into a subset of recognized tags. | |
| 480 if (child.nodeType == Node.ELEMENT_NODE && | |
| 481 (child.nodeName == 'dim' || child.nodeName == 'match' || | |
| 482 child.nodeName == 'url')) { | |
| 483 var style = { | |
| 484 'type': child.nodeName, | |
| 485 'offset': result.description.length | |
| 486 }; | |
| 487 result.descriptionStyles.push(style); | |
| 488 arguments.callee(child); | |
| 489 style.length = result.description.length - style.offset; | |
| 490 continue; | |
| 491 } | |
| 492 | |
| 493 // Descend into all other nodes, even if they are unrecognized, for | |
| 494 // forward compat. | |
| 495 arguments.callee(child); | |
| 496 } | |
| 497 })(root); | |
| 498 | |
| 499 return result; | |
| 500 } | |
| 501 | |
| 502 function setupOmniboxEvents() { | |
| 503 chrome.omnibox.onInputChanged.dispatch = | |
| 504 function(text, requestId) { | |
| 505 var suggestCallback = function(suggestions) { | |
| 506 chrome.omnibox.sendSuggestions(requestId, suggestions); | |
| 507 }; | |
| 508 chrome.Event.prototype.dispatch.apply(this, [text, suggestCallback]); | |
| 509 }; | |
| 510 } | |
| 511 | |
| 512 function setupTtsEvents() { | |
| 513 chromeHidden.tts = {}; | |
| 514 chromeHidden.tts.handlers = {}; | |
| 515 chrome.ttsEngine.onSpeak.dispatch = | |
| 516 function(text, options, requestId) { | |
| 517 var sendTtsEvent = function(event) { | |
| 518 chrome.ttsEngine.sendTtsEvent(requestId, event); | |
| 519 }; | |
| 520 chrome.Event.prototype.dispatch.apply( | |
| 521 this, [text, options, sendTtsEvent]); | |
| 522 }; | |
| 523 try { | |
| 524 chrome.tts.onEvent.addListener( | |
| 525 function(event) { | |
| 526 var eventHandler = chromeHidden.tts.handlers[event.srcId]; | |
| 527 if (eventHandler) { | |
| 528 eventHandler({ | |
| 529 type: event.type, | |
| 530 charIndex: event.charIndex, | |
| 531 errorMessage: event.errorMessage | |
| 532 }); | |
| 533 if (event.isFinalEvent) { | |
| 534 delete chromeHidden.tts.handlers[event.srcId]; | |
| 535 } | |
| 536 } | |
| 537 }); | |
| 538 } catch (e) { | |
| 539 // This extension doesn't have permission to access TTS, so we | |
| 540 // can safely ignore this. | |
| 541 } | |
| 542 } | |
| 543 | |
| 544 // Get the platform from navigator.appVersion. | |
| 545 function getPlatform() { | |
| 546 var platforms = [ | |
| 547 [/CrOS Touch/, "chromeos touch"], | |
| 548 [/CrOS/, "chromeos"], | |
| 549 [/Linux/, "linux"], | |
| 550 [/Mac/, "mac"], | |
| 551 [/Win/, "win"], | |
| 552 ]; | |
| 553 | |
| 554 for (var i = 0; i < platforms.length; i++) { | |
| 555 if (platforms[i][0].test(navigator.appVersion)) { | |
| 556 return platforms[i][1]; | |
| 557 } | |
| 558 } | |
| 559 return "unknown"; | |
| 560 } | |
| 561 | |
| 562 chromeHidden.onLoad.addListener(function(extensionId, isExtensionProcess, | |
| 563 isIncognitoProcess) { | |
| 564 if (!isExtensionProcess) | |
| 565 return; | |
| 566 | |
| 567 // Setup the ChromeSetting class so we can use it to construct | |
| 568 // ChromeSetting objects from the API definition. | |
| 569 setupChromeSetting(); | |
| 570 | |
| 571 // Setup the ContentSetting class so we can use it to construct | |
| 572 // ContentSetting objects from the API definition. | |
| 573 setupContentSetting(); | |
| 574 | |
| 575 // |apiFunctions| is a hash of name -> object that stores the | |
| 576 // name & definition of the apiFunction. Custom handling of api functions | |
| 577 // is implemented by adding a "handleRequest" function to the object. | |
| 578 var apiFunctions = {}; | |
| 579 | |
| 580 // Read api definitions and setup api functions in the chrome namespace. | |
| 581 // TODO(rafaelw): Consider defining a json schema for an api definition | |
| 582 // and validating either here, in a unit_test or both. | |
| 583 // TODO(rafaelw): Handle synchronous functions. | |
| 584 // TOOD(rafaelw): Consider providing some convenient override points | |
| 585 // for api functions that wish to insert themselves into the call. | |
| 586 var apiDefinitions = chromeHidden.JSON.parse(GetExtensionAPIDefinition()); | |
| 587 var platform = getPlatform(); | |
| 588 | |
| 589 apiDefinitions.forEach(function(apiDef) { | |
| 590 // Check platform, if apiDef has platforms key. | |
| 591 if (apiDef.platforms && apiDef.platforms.indexOf(platform) == -1) { | |
| 592 return; | |
| 593 } | |
| 594 | |
| 595 var module = chrome; | |
| 596 var namespaces = apiDef.namespace.split('.'); | |
| 597 for (var index = 0, name; name = namespaces[index]; index++) { | |
| 598 module[name] = module[name] || {}; | |
| 599 module = module[name]; | |
| 600 } | |
| 601 | |
| 602 // Add types to global validationTypes | |
| 603 if (apiDef.types) { | |
| 604 apiDef.types.forEach(function(t) { | |
| 605 chromeHidden.validationTypes.push(t); | |
| 606 if (t.type == 'object' && customBindings[t.id]) { | |
| 607 customBindings[t.id].prototype.setSchema(t); | |
| 608 } | |
| 609 }); | |
| 610 } | |
| 611 | |
| 612 // Setup Functions. | |
| 613 if (apiDef.functions) { | |
| 614 apiDef.functions.forEach(function(functionDef) { | |
| 615 // Module functions may have been defined earlier by hand. Don't | |
| 616 // clobber them. | |
| 617 if (module[functionDef.name]) | |
| 618 return; | |
| 619 | |
| 620 var apiFunction = {}; | |
| 621 apiFunction.definition = functionDef; | |
| 622 apiFunction.name = apiDef.namespace + "." + functionDef.name; | |
| 623 apiFunctions[apiFunction.name] = apiFunction; | |
| 624 | |
| 625 module[functionDef.name] = (function() { | |
| 626 var args = arguments; | |
| 627 if (this.updateArgumentsPreValidate) | |
| 628 args = this.updateArgumentsPreValidate.apply(this, args); | |
| 629 chromeHidden.validate(args, this.definition.parameters); | |
| 630 if (this.updateArgumentsPostValidate) | |
| 631 args = this.updateArgumentsPostValidate.apply(this, args); | |
| 632 | |
| 633 var retval; | |
| 634 if (this.handleRequest) { | |
| 635 retval = this.handleRequest.apply(this, args); | |
| 636 } else { | |
| 637 retval = sendRequest(this.name, args, | |
| 638 this.definition.parameters, | |
| 639 {customCallback: this.customCallback}); | |
| 640 } | |
| 641 | |
| 642 // Validate return value if defined - only in debug. | |
| 643 if (chromeHidden.validateCallbacks && | |
| 644 chromeHidden.validate && | |
| 645 this.definition.returns) { | |
| 646 chromeHidden.validate([retval], [this.definition.returns]); | |
| 647 } | |
| 648 return retval; | |
| 649 }).bind(apiFunction); | |
| 650 }); | |
| 651 } | |
| 652 | |
| 653 // Setup Events | |
| 654 if (apiDef.events) { | |
| 655 apiDef.events.forEach(function(eventDef) { | |
| 656 // Module events may have been defined earlier by hand. Don't clobber | |
| 657 // them. | |
| 658 if (module[eventDef.name]) | |
| 659 return; | |
| 660 | |
| 661 var eventName = apiDef.namespace + "." + eventDef.name; | |
| 662 if (apiDef.namespace == "experimental.webRequest") { | |
| 663 module[eventDef.name] = new chrome.WebRequestEvent(eventName, | |
| 664 eventDef.parameters, eventDef.extraParameters); | |
| 665 } else { | |
| 666 module[eventDef.name] = new chrome.Event(eventName, | |
| 667 eventDef.parameters); | |
| 668 } | |
| 669 }); | |
| 670 } | |
| 671 | |
| 672 function addProperties(m, def) { | |
| 673 // Parse any values defined for properties. | |
| 674 if (def.properties) { | |
| 675 forEach(def.properties, function(prop, property) { | |
| 676 var value = property.value; | |
| 677 if (value) { | |
| 678 if (property.type === 'integer') { | |
| 679 value = parseInt(value); | |
| 680 } else if (property.type === 'boolean') { | |
| 681 value = value === "true"; | |
| 682 } else if (property["$ref"]) { | |
| 683 var constructor = customBindings[property["$ref"]]; | |
| 684 var args = value; | |
| 685 // For an object property, |value| is an array of constructor | |
| 686 // arguments, but we want to pass the arguments directly | |
| 687 // (i.e. not as an array), so we have to fake calling |new| on | |
| 688 // the constructor. | |
| 689 value = { __proto__: constructor.prototype }; | |
| 690 constructor.apply(value, args); | |
| 691 } else if (property.type === 'object') { | |
| 692 // Recursively add properties. | |
| 693 addProperties(value, property); | |
| 694 } else if (property.type !== 'string') { | |
| 695 throw "NOT IMPLEMENTED (extension_api.json error): Cannot " + | |
| 696 "parse values for type \"" + property.type + "\""; | |
| 697 } | |
| 698 } | |
| 699 if (value) { | |
| 700 m[prop] = value; | |
| 701 } | |
| 702 }); | |
| 703 } | |
| 704 } | |
| 705 | |
| 706 addProperties(module, apiDef); | |
| 707 | |
| 708 // getTabContentses is retained for backwards compatibility | |
| 709 // See http://crbug.com/21433 | |
| 710 chrome.extension.getTabContentses = chrome.extension.getExtensionTabs; | |
| 711 }); | |
| 712 | |
| 713 apiFunctions["tabs.connect"].handleRequest = function(tabId, connectInfo) { | |
| 714 var name = ""; | |
| 715 if (connectInfo) { | |
| 716 name = connectInfo.name || name; | |
| 717 } | |
| 718 var portId = OpenChannelToTab(tabId, chromeHidden.extensionId, name); | |
| 719 return chromeHidden.Port.createPort(portId, name); | |
| 720 }; | |
| 721 | |
| 722 apiFunctions["tabs.sendRequest"].handleRequest = | |
| 723 function(tabId, request, responseCallback) { | |
| 724 var port = chrome.tabs.connect(tabId, | |
| 725 {name: chromeHidden.kRequestChannel}); | |
| 726 port.postMessage(request); | |
| 727 port.onDisconnect.addListener(function() { | |
| 728 // For onDisconnects, we only notify the callback if there was an error. | |
| 729 if (chrome.extension.lastError && responseCallback) | |
| 730 responseCallback(); | |
| 731 }); | |
| 732 port.onMessage.addListener(function(response) { | |
| 733 try { | |
| 734 if (responseCallback) | |
| 735 responseCallback(response); | |
| 736 } finally { | |
| 737 port.disconnect(); | |
| 738 port = null; | |
| 739 } | |
| 740 }); | |
| 741 }; | |
| 742 | |
| 743 apiFunctions["fileBrowserPrivate.requestLocalFileSystem"].customCallback = | |
| 744 function(name, request, response) { | |
| 745 var resp = response ? [chromeHidden.JSON.parse(response)] : []; | |
| 746 var fs = null; | |
| 747 if (!resp[0].error) | |
| 748 fs = GetLocalFileSystem(resp[0].name, resp[0].path); | |
| 749 if (request.callback) | |
| 750 request.callback(fs); | |
| 751 request.callback = null; | |
| 752 }; | |
| 753 | |
| 754 apiFunctions["chromePrivate.decodeJPEG"].handleRequest = | |
| 755 function(jpeg_image) { | |
| 756 return DecodeJPEG(jpeg_image); | |
| 757 }; | |
| 758 | |
| 759 apiFunctions["extension.getViews"].handleRequest = function(properties) { | |
| 760 var windowId = -1; | |
| 761 var type = "ALL"; | |
| 762 if (typeof(properties) != "undefined") { | |
| 763 if (typeof(properties.type) != "undefined") { | |
| 764 type = properties.type; | |
| 765 } | |
| 766 if (typeof(properties.windowId) != "undefined") { | |
| 767 windowId = properties.windowId; | |
| 768 } | |
| 769 } | |
| 770 return GetExtensionViews(windowId, type) || null; | |
| 771 }; | |
| 772 | |
| 773 apiFunctions["extension.getBackgroundPage"].handleRequest = function() { | |
| 774 return GetExtensionViews(-1, "BACKGROUND")[0] || null; | |
| 775 }; | |
| 776 | |
| 777 apiFunctions["extension.getToolstrips"].handleRequest = | |
| 778 function(windowId) { | |
| 779 if (typeof(windowId) == "undefined") | |
| 780 windowId = -1; | |
| 781 return GetExtensionViews(windowId, "TOOLSTRIP"); | |
| 782 }; | |
| 783 | |
| 784 apiFunctions["extension.getExtensionTabs"].handleRequest = | |
| 785 function(windowId) { | |
| 786 if (typeof(windowId) == "undefined") | |
| 787 windowId = -1; | |
| 788 return GetExtensionViews(windowId, "TAB"); | |
| 789 }; | |
| 790 | |
| 791 apiFunctions["devtools.getTabEvents"].handleRequest = function(tabId) { | |
| 792 var tabIdProxy = {}; | |
| 793 var functions = ["onPageEvent", "onTabClose"]; | |
| 794 functions.forEach(function(name) { | |
| 795 // Event disambiguation is handled by name munging. See | |
| 796 // chrome/browser/extensions/extension_devtools_events.h for the C++ | |
| 797 // equivalent of this logic. | |
| 798 tabIdProxy[name] = new chrome.Event("devtools." + tabId + "." + name); | |
| 799 }); | |
| 800 return tabIdProxy; | |
| 801 }; | |
| 802 | |
| 803 var canvas; | |
| 804 function setIconCommon(details, name, parameters, actionType, iconSize, | |
| 805 nativeFunction) { | |
| 806 if ("iconIndex" in details) { | |
| 807 sendRequest(name, [details], parameters); | |
| 808 } else if ("imageData" in details) { | |
| 809 // Verify that this at least looks like an ImageData element. | |
| 810 // Unfortunately, we cannot use instanceof because the ImageData | |
| 811 // constructor is not public. | |
| 812 // | |
| 813 // We do this manually instead of using JSONSchema to avoid having these | |
| 814 // properties show up in the doc. | |
| 815 if (!("width" in details.imageData) || | |
| 816 !("height" in details.imageData) || | |
| 817 !("data" in details.imageData)) { | |
| 818 throw new Error( | |
| 819 "The imageData property must contain an ImageData object."); | |
| 820 } | |
| 821 | |
| 822 if (details.imageData.width > iconSize || | |
| 823 details.imageData.height > iconSize) { | |
| 824 throw new Error( | |
| 825 "The imageData property must contain an ImageData object that " + | |
| 826 "is no larger than " + iconSize + " pixels square."); | |
| 827 } | |
| 828 | |
| 829 sendRequest(name, [details], parameters, | |
| 830 {noStringify: true, nativeFunction: nativeFunction}); | |
| 831 } else if ("path" in details) { | |
| 832 var img = new Image(); | |
| 833 img.onerror = function() { | |
| 834 console.error("Could not load " + actionType + " icon '" + | |
| 835 details.path + "'."); | |
| 836 }; | |
| 837 img.onload = function() { | |
| 838 var canvas = document.createElement("canvas"); | |
| 839 canvas.width = img.width > iconSize ? iconSize : img.width; | |
| 840 canvas.height = img.height > iconSize ? iconSize : img.height; | |
| 841 | |
| 842 var canvas_context = canvas.getContext('2d'); | |
| 843 canvas_context.clearRect(0, 0, canvas.width, canvas.height); | |
| 844 canvas_context.drawImage(img, 0, 0, canvas.width, canvas.height); | |
| 845 delete details.path; | |
| 846 details.imageData = canvas_context.getImageData(0, 0, canvas.width, | |
| 847 canvas.height); | |
| 848 sendRequest(name, [details], parameters, | |
| 849 {noStringify: true, nativeFunction: nativeFunction}); | |
| 850 }; | |
| 851 img.src = details.path; | |
| 852 } else { | |
| 853 throw new Error( | |
| 854 "Either the path or imageData property must be specified."); | |
| 855 } | |
| 856 } | |
| 857 | |
| 858 function setExtensionActionIconCommon(details, name, parameters, | |
| 859 actionType) { | |
| 860 var EXTENSION_ACTION_ICON_SIZE = 19; | |
| 861 setIconCommon(details, name, parameters, actionType, | |
| 862 EXTENSION_ACTION_ICON_SIZE, SetIconCommon); | |
| 863 } | |
| 864 | |
| 865 apiFunctions["browserAction.setIcon"].handleRequest = function(details) { | |
| 866 setExtensionActionIconCommon( | |
| 867 details, this.name, this.definition.parameters, "browser action"); | |
| 868 }; | |
| 869 | |
| 870 apiFunctions["pageAction.setIcon"].handleRequest = function(details) { | |
| 871 setExtensionActionIconCommon( | |
| 872 details, this.name, this.definition.parameters, "page action"); | |
| 873 }; | |
| 874 | |
| 875 apiFunctions["experimental.sidebar.setIcon"].handleRequest = | |
| 876 function(details) { | |
| 877 var SIDEBAR_ICON_SIZE = 16; | |
| 878 setIconCommon( | |
| 879 details, this.name, this.definition.parameters, "sidebar", | |
| 880 SIDEBAR_ICON_SIZE, SetIconCommon); | |
| 881 }; | |
| 882 | |
| 883 apiFunctions["contextMenus.create"].handleRequest = | |
| 884 function() { | |
| 885 var args = arguments; | |
| 886 var id = GetNextContextMenuId(); | |
| 887 args[0].generatedId = id; | |
| 888 sendRequest(this.name, args, this.definition.parameters, | |
| 889 {customCallback: this.customCallback}); | |
| 890 return id; | |
| 891 }; | |
| 892 | |
| 893 apiFunctions["omnibox.setDefaultSuggestion"].handleRequest = | |
| 894 function(details) { | |
| 895 var parseResult = parseOmniboxDescription(details.description); | |
| 896 sendRequest(this.name, [parseResult], this.definition.parameters); | |
| 897 }; | |
| 898 | |
| 899 apiFunctions["experimental.webRequest.addEventListener"].handleRequest = | |
| 900 function() { | |
| 901 var args = Array.prototype.slice.call(arguments); | |
| 902 sendRequest(this.name, args, this.definition.parameters, | |
| 903 {forIOThread: true}); | |
| 904 }; | |
| 905 | |
| 906 apiFunctions["experimental.webRequest.eventHandled"].handleRequest = | |
| 907 function() { | |
| 908 var args = Array.prototype.slice.call(arguments); | |
| 909 sendRequest(this.name, args, this.definition.parameters, | |
| 910 {forIOThread: true}); | |
| 911 }; | |
| 912 | |
| 913 apiFunctions["contextMenus.create"].customCallback = | |
| 914 function(name, request, response) { | |
| 915 if (chrome.extension.lastError) { | |
| 916 return; | |
| 917 } | |
| 918 | |
| 919 var id = request.args[0].generatedId; | |
| 920 | |
| 921 // Set up the onclick handler if we were passed one in the request. | |
| 922 var onclick = request.args.length ? request.args[0].onclick : null; | |
| 923 if (onclick) { | |
| 924 chromeHidden.contextMenus.ensureListenerSetup(); | |
| 925 chromeHidden.contextMenus.handlers[id] = onclick; | |
| 926 } | |
| 927 }; | |
| 928 | |
| 929 apiFunctions["contextMenus.remove"].customCallback = | |
| 930 function(name, request, response) { | |
| 931 if (chrome.extension.lastError) { | |
| 932 return; | |
| 933 } | |
| 934 var id = request.args[0]; | |
| 935 delete chromeHidden.contextMenus.handlers[id]; | |
| 936 }; | |
| 937 | |
| 938 apiFunctions["contextMenus.update"].customCallback = | |
| 939 function(name, request, response) { | |
| 940 if (chrome.extension.lastError) { | |
| 941 return; | |
| 942 } | |
| 943 var id = request.args[0]; | |
| 944 if (request.args[1].onclick) { | |
| 945 chromeHidden.contextMenus.handlers[id] = request.args[1].onclick; | |
| 946 } | |
| 947 }; | |
| 948 | |
| 949 apiFunctions["contextMenus.removeAll"].customCallback = | |
| 950 function(name, request, response) { | |
| 951 if (chrome.extension.lastError) { | |
| 952 return; | |
| 953 } | |
| 954 chromeHidden.contextMenus.handlers = {}; | |
| 955 }; | |
| 956 | |
| 957 apiFunctions["tabs.captureVisibleTab"].updateArgumentsPreValidate = | |
| 958 function() { | |
| 959 // Old signature: | |
| 960 // captureVisibleTab(int windowId, function callback); | |
| 961 // New signature: | |
| 962 // captureVisibleTab(int windowId, object details, function callback); | |
| 963 // | |
| 964 // TODO(skerner): The next step to omitting optional arguments is the | |
| 965 // replacement of this code with code that matches arguments by type. | |
| 966 // Once this is working for captureVisibleTab() it can be enabled for | |
| 967 // the rest of the API. See crbug/29215 . | |
| 968 if (arguments.length == 2 && typeof(arguments[1]) == "function") { | |
| 969 // If the old signature is used, add a null details object. | |
| 970 newArgs = [arguments[0], null, arguments[1]]; | |
| 971 } else { | |
| 972 newArgs = arguments; | |
| 973 } | |
| 974 return newArgs; | |
| 975 }; | |
| 976 | |
| 977 apiFunctions["omnibox.sendSuggestions"].updateArgumentsPostValidate = | |
| 978 function(requestId, userSuggestions) { | |
| 979 var suggestions = []; | |
| 980 for (var i = 0; i < userSuggestions.length; i++) { | |
| 981 var parseResult = parseOmniboxDescription( | |
| 982 userSuggestions[i].description); | |
| 983 parseResult.content = userSuggestions[i].content; | |
| 984 suggestions.push(parseResult); | |
| 985 } | |
| 986 return [requestId, suggestions]; | |
| 987 }; | |
| 988 | |
| 989 apiFunctions["tts.speak"].handleRequest = function() { | |
| 990 var args = arguments; | |
| 991 if (args.length > 1 && args[1] && args[1].onEvent) { | |
| 992 var id = GetNextTtsEventId(); | |
| 993 args[1].srcId = id; | |
| 994 chromeHidden.tts.handlers[id] = args[1].onEvent; | |
| 995 } | |
| 996 sendRequest(this.name, args, this.definition.parameters); | |
| 997 return id; | |
| 998 }; | |
| 999 | |
| 1000 if (chrome.test) { | |
| 1001 chrome.test.getApiDefinitions = GetExtensionAPIDefinition; | |
| 1002 } | |
| 1003 | |
| 1004 setupPageActionEvents(extensionId); | |
| 1005 setupToolstripEvents(GetRenderViewId()); | |
| 1006 setupHiddenContextMenuEvent(extensionId); | |
| 1007 setupInputEvents(); | |
| 1008 setupOmniboxEvents(); | |
| 1009 setupTtsEvents(); | |
| 1010 }); | |
| 1011 | |
| 1012 if (!chrome.experimental) | |
| 1013 chrome.experimental = {}; | |
| 1014 | |
| 1015 if (!chrome.experimental.accessibility) | |
| 1016 chrome.experimental.accessibility = {}; | |
| 1017 | |
| 1018 if (!chrome.tts) | |
| 1019 chrome.tts = {}; | |
| 1020 | |
| 1021 if (!chrome.ttsEngine) | |
| 1022 chrome.ttsEngine = {}; | |
| 1023 | |
| 1024 if (!chrome.experimental.downloads) | |
| 1025 chrome.experimental.downloads = {}; | |
| 1026 })(); | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 7980055:
Move bindings javascript into its own directory. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src