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| 1 // Copyright (c) 2012 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 'use strict'; | |
| 6 | |
| 7 /** | |
| 8 * Represents each volume, such as "drive", "download directory", each "USB | |
| 9 * flush storage", or "mounted zip archive" etc. | |
| 10 * | |
| 11 * @param {util.VolumeType} volumeType The type of the volume. | |
| 12 * @param {string} mountPath Where the volume is mounted. | |
| 13 * @param {DirectoryEntry} root The root directory entry of this volume. | |
| 14 * @param {string} error The error if an error is found. | |
| 15 * @param {string} deviceType The type of device ('usb'|'sd'|'optical'|'mobile' | |
| 16 * |'unknown') (as defined in chromeos/disks/disk_mount_manager.cc). | |
| 17 * Can be null. | |
| 18 * @param {boolean} isReadOnly True if the volume is read only. | |
| 19 * @constructor | |
| 20 */ | |
| 21 function VolumeInfo( | |
| 22 volumeType, mountPath, root, error, deviceType, isReadOnly) { | |
| 23 this.volumeType = volumeType; | |
| 24 // TODO(hidehiko): This should include FileSystem instance. | |
| 25 this.mountPath = mountPath; | |
| 26 this.root = root; | |
| 27 | |
| 28 // Note: This represents if the mounting of the volume is successfully done | |
| 29 // or not. (If error is empty string, the mount is successfully done). | |
| 30 // TODO(hidehiko): Rename to make this more understandable. | |
| 31 this.error = error; | |
| 32 this.deviceType = deviceType; | |
| 33 this.isReadOnly = isReadOnly; | |
| 34 | |
| 35 // VolumeInfo is immutable. | |
| 36 Object.freeze(this); | |
| 37 } | |
| 38 | |
| 39 /** | |
| 40 * Utilities for volume manager implementation. | |
| 41 */ | |
| 42 var volumeManagerUtil = {}; | |
| 43 | |
| 44 /** | |
| 45 * Throws an Error when the given error is not in util.VolumeError. | |
| 46 * @param {util.VolumeError} error Status string usually received from APIs. | |
| 47 */ | |
| 48 volumeManagerUtil.validateError = function(error) { | |
| 49 for (var key in util.VolumeError) { | |
| 50 if (error == util.VolumeError[key]) | |
| 51 return; | |
| 52 } | |
| 53 | |
| 54 throw new Error('Invalid mount error: ' + error); | |
| 55 }; | |
| 56 | |
| 57 /** | |
| 58 * The regex pattern which matches valid mount paths. | |
| 59 * The valid paths are: | |
| 60 * - Either of '/drive', '/drive_shared_with_me', '/drive_offline', | |
| 61 * '/drive_recent' or '/Download' | |
| 62 * - For archive, drive, removable can have (exactly one) sub directory in the | |
| 63 * root path. E.g. '/archive/foo', '/removable/usb1' etc. | |
| 64 * | |
| 65 * @type {RegExp} | |
| 66 * @private | |
| 67 */ | |
| 68 volumeManagerUtil.validateMountPathRegExp_ = new RegExp( | |
| 69 '^/(drive|drive_shared_with_me|drive_offline|drive_recent|Downloads|' + | |
| 70 '((archive|drive|removable)\/[^/]+))$'); | |
| 71 | |
| 72 /** | |
| 73 * Throws an Error if the validation fails. | |
| 74 * @param {string} mountPath The target path of the validation. | |
| 75 */ | |
| 76 volumeManagerUtil.validateMountPath = function(mountPath) { | |
| 77 if (!volumeManagerUtil.validateMountPathRegExp_.test(mountPath)) | |
| 78 throw new Error('Invalid mount path: ' + mountPath); | |
| 79 }; | |
| 80 | |
| 81 /** | |
| 82 * Returns the root entry of a volume mounted at mountPath. | |
| 83 * | |
| 84 * @param {string} mountPath The mounted path of the volume. | |
| 85 * @param {function(DirectoryEntry)} successCallback Called when the root entry | |
| 86 * is found. | |
| 87 * @param {function(FileError)} errorCallback Called when an error is found. | |
| 88 * @private | |
| 89 */ | |
| 90 volumeManagerUtil.getRootEntry_ = function( | |
| 91 mountPath, successCallback, errorCallback) { | |
| 92 // We always request FileSystem here, because requestFileSystem() grants | |
| 93 // permissions if necessary, especially for Drive File System at first mount | |
| 94 // time. | |
| 95 // Note that we actually need to request FileSystem after multi file system | |
| 96 // support, so this will be more natural code then. | |
| 97 chrome.fileBrowserPrivate.requestFileSystem( | |
| 98 'compatible', | |
| 99 function(fileSystem) { | |
| 100 // TODO(hidehiko): chrome.runtime.lastError should have error reason. | |
| 101 if (!fileSystem) { | |
| 102 errorCallback(util.createFileError(FileError.NOT_FOUND_ERR)); | |
| 103 return; | |
| 104 } | |
| 105 | |
| 106 fileSystem.root.getDirectory( | |
| 107 mountPath.substring(1), // Strip leading '/'. | |
| 108 {create: false}, successCallback, errorCallback); | |
| 109 }); | |
| 110 }; | |
| 111 | |
| 112 /** | |
| 113 * Builds the VolumeInfo data from VolumeMetadata. | |
| 114 * @param {VolumeMetadata} volumeMetadata Metadata instance for the volume. | |
| 115 * @param {function(VolumeInfo)} callback Called on completion. | |
| 116 */ | |
| 117 volumeManagerUtil.createVolumeInfo = function(volumeMetadata, callback) { | |
| 118 volumeManagerUtil.getRootEntry_( | |
| 119 volumeMetadata.mountPath, | |
| 120 function(entry) { | |
| 121 if (volumeMetadata.volumeType === util.VolumeType.DRIVE) { | |
| 122 // After file system is mounted, we "read" drive grand root | |
| 123 // entry at first. This triggers full feed fetch on background. | |
| 124 // Note: we don't need to handle errors here, because even if | |
| 125 // it fails, accessing to some path later will just become | |
| 126 // a fast-fetch and it re-triggers full-feed fetch. | |
| 127 entry.createReader().readEntries( | |
| 128 function() { /* do nothing */ }, | |
| 129 function(error) { | |
| 130 console.error( | |
| 131 'Triggering full feed fetch is failed: ' + | |
| 132 util.getFileErrorMnemonic(error.code)); | |
| 133 }); | |
| 134 } | |
| 135 callback(new VolumeInfo( | |
| 136 volumeMetadata.volumeType, | |
| 137 volumeMetadata.mountPath, | |
| 138 entry, | |
| 139 volumeMetadata.mountCondition, | |
| 140 volumeMetadata.deviceType, | |
| 141 volumeMetadata.isReadOnly)); | |
| 142 }, | |
| 143 function(fileError) { | |
| 144 console.error('Root entry is not found: ' + | |
| 145 mountPath + ', ' + util.getFileErrorMnemonic(fileError.code)); | |
| 146 callback(new VolumeInfo( | |
| 147 volumeMetadata.volumeType, | |
| 148 volumeMetadata.mountPath, | |
| 149 null, // Root entry is not found. | |
| 150 volumeMetadata.mountCondition, | |
| 151 volumeMetadata.deviceType, | |
| 152 volumeMetadata.isReadOnly)); | |
| 153 }); | |
| 154 }; | |
| 155 | |
| 156 /** | |
| 157 * The order of the volume list based on root type. | |
| 158 * @type {Array.<string>} | |
| 159 * @const | |
| 160 * @private | |
| 161 */ | |
| 162 volumeManagerUtil.volumeListOrder_ = [ | |
| 163 RootType.DRIVE, RootType.DOWNLOADS, RootType.ARCHIVE, RootType.REMOVABLE | |
| 164 ]; | |
| 165 | |
| 166 /** | |
| 167 * Compares mount paths to sort the volume list order. | |
| 168 * @param {string} mountPath1 The mount path for the first volume. | |
| 169 * @param {string} mountPath2 The mount path for the second volume. | |
| 170 * @return {number} 0 if mountPath1 and mountPath2 are same, -1 if VolumeInfo | |
| 171 * mounted at mountPath1 should be listed before the one mounted at | |
| 172 * mountPath2, otherwise 1. | |
| 173 */ | |
| 174 volumeManagerUtil.compareMountPath = function(mountPath1, mountPath2) { | |
| 175 var order1 = volumeManagerUtil.volumeListOrder_.indexOf( | |
| 176 PathUtil.getRootType(mountPath1)); | |
| 177 var order2 = volumeManagerUtil.volumeListOrder_.indexOf( | |
| 178 PathUtil.getRootType(mountPath2)); | |
| 179 if (order1 != order2) | |
| 180 return order1 < order2 ? -1 : 1; | |
| 181 | |
| 182 if (mountPath1 != mountPath2) | |
| 183 return mountPath1 < mountPath2 ? -1 : 1; | |
| 184 | |
| 185 // The path is same. | |
| 186 return 0; | |
| 187 }; | |
| 188 | |
| 189 /** | |
| 190 * The container of the VolumeInfo for each mounted volume. | |
| 191 * @constructor | |
| 192 */ | |
| 193 function VolumeInfoList() { | |
| 194 /** | |
| 195 * Holds VolumeInfo instances. | |
| 196 * @type {cr.ui.ArrayDataModel} | |
| 197 * @private | |
| 198 */ | |
| 199 this.model_ = new cr.ui.ArrayDataModel([]); | |
| 200 | |
| 201 Object.freeze(this); | |
| 202 } | |
| 203 | |
| 204 VolumeInfoList.prototype = { | |
| 205 get length() { return this.model_.length; } | |
| 206 }; | |
| 207 | |
| 208 /** | |
| 209 * Adds the event listener to listen the change of volume info. | |
| 210 * @param {string} type The name of the event. | |
| 211 * @param {function(Event)} handler The handler for the event. | |
| 212 */ | |
| 213 VolumeInfoList.prototype.addEventListener = function(type, handler) { | |
| 214 this.model_.addEventListener(type, handler); | |
| 215 }; | |
| 216 | |
| 217 /** | |
| 218 * Removes the event listener. | |
| 219 * @param {string} type The name of the event. | |
| 220 * @param {function(Event)} handler The handler to be removed. | |
| 221 */ | |
| 222 VolumeInfoList.prototype.removeEventListener = function(type, handler) { | |
| 223 this.model_.removeEventListener(type, handler); | |
| 224 }; | |
| 225 | |
| 226 /** | |
| 227 * Adds the volumeInfo to the appropriate position. If there already exists, | |
| 228 * just replaces it. | |
| 229 * @param {VolumeInfo} volumeInfo The information of the new volume. | |
| 230 */ | |
| 231 VolumeInfoList.prototype.add = function(volumeInfo) { | |
| 232 var index = this.findLowerBoundIndex_(volumeInfo.mountPath); | |
| 233 if (index < this.length && | |
| 234 this.item(index).mountPath == volumeInfo.mountPath) { | |
| 235 // Replace the VolumeInfo. | |
| 236 this.model_.splice(index, 1, volumeInfo); | |
| 237 } else { | |
| 238 // Insert the VolumeInfo. | |
| 239 this.model_.splice(index, 0, volumeInfo); | |
| 240 } | |
| 241 }; | |
| 242 | |
| 243 /** | |
| 244 * Removes the VolumeInfo of the volume mounted at mountPath. | |
| 245 * @param {string} mountPath The path to the location where the volume is | |
| 246 * mounted. | |
| 247 */ | |
| 248 VolumeInfoList.prototype.remove = function(mountPath) { | |
| 249 var index = this.findLowerBoundIndex_(mountPath); | |
| 250 if (index < this.length && this.item(index).mountPath == mountPath) | |
| 251 this.model_.splice(index, 1); | |
| 252 }; | |
| 253 | |
| 254 /** | |
| 255 * Searches the information of the volume mounted at mountPath. | |
| 256 * @param {string} mountPath The path to the location where the volume is | |
| 257 * mounted. | |
| 258 * @return {VolumeInfo} The volume's information, or null if not found. | |
| 259 */ | |
| 260 VolumeInfoList.prototype.find = function(mountPath) { | |
| 261 var index = this.findLowerBoundIndex_(mountPath); | |
| 262 if (index < this.length && this.item(index).mountPath == mountPath) | |
| 263 return this.item(index); | |
| 264 | |
| 265 // Not found. | |
| 266 return null; | |
| 267 }; | |
| 268 | |
| 269 /** | |
| 270 * @param {string} mountPath The mount path of searched volume. | |
| 271 * @return {number} The index of the volume if found, or the inserting | |
| 272 * position of the volume. | |
| 273 * @private | |
| 274 */ | |
| 275 VolumeInfoList.prototype.findLowerBoundIndex_ = function(mountPath) { | |
| 276 // Assuming the number of elements in the array data model is very small | |
| 277 // in most cases, use simple linear search, here. | |
| 278 for (var i = 0; i < this.length; i++) { | |
| 279 if (volumeManagerUtil.compareMountPath( | |
| 280 this.item(i).mountPath, mountPath) >= 0) | |
| 281 return i; | |
| 282 } | |
| 283 return this.length; | |
| 284 }; | |
| 285 | |
| 286 /** | |
| 287 * @param {number} index The index of the volume in the list. | |
| 288 * @return {VolumeInfo} The VolumeInfo instance. | |
| 289 */ | |
| 290 VolumeInfoList.prototype.item = function(index) { | |
| 291 return this.model_.item(index); | |
| 292 }; | |
| 293 | |
| 294 /** | |
| 295 * VolumeManager is responsible for tracking list of mounted volumes. | |
| 296 * | |
| 297 * @constructor | |
| 298 * @extends {cr.EventTarget} | |
| 299 */ | |
| 300 function VolumeManager() { | |
| 301 /** | |
| 302 * The list of archives requested to mount. We will show contents once | |
| 303 * archive is mounted, but only for mounts from within this filebrowser tab. | |
| 304 * @type {Object.<string, Object>} | |
| 305 * @private | |
| 306 */ | |
| 307 this.requests_ = {}; | |
| 308 | |
| 309 /** | |
| 310 * The list of VolumeInfo instances for each mounted volume. | |
| 311 * @type {VolumeInfoList} | |
| 312 */ | |
| 313 this.volumeInfoList = new VolumeInfoList(); | |
| 314 | |
| 315 // The status should be merged into VolumeManager. | |
| 316 // TODO(hidehiko): Remove them after the migration. | |
| 317 this.driveConnectionState_ = { | |
| 318 type: util.DriveConnectionType.OFFLINE, | |
| 319 reasons: [util.DriveConnectionReason.NO_SERVICE] | |
| 320 }; | |
| 321 | |
| 322 chrome.fileBrowserPrivate.onDriveConnectionStatusChanged.addListener( | |
| 323 this.onDriveConnectionStatusChanged_.bind(this)); | |
| 324 this.onDriveConnectionStatusChanged_(); | |
| 325 } | |
| 326 | |
| 327 /** | |
| 328 * Invoked when the drive connection status is changed. | |
| 329 * @private_ | |
| 330 */ | |
| 331 VolumeManager.prototype.onDriveConnectionStatusChanged_ = function() { | |
| 332 chrome.fileBrowserPrivate.getDriveConnectionState(function(state) { | |
| 333 this.driveConnectionState_ = state; | |
| 334 cr.dispatchSimpleEvent(this, 'drive-connection-changed'); | |
| 335 }.bind(this)); | |
| 336 }; | |
| 337 | |
| 338 /** | |
| 339 * Returns the drive connection state. | |
| 340 * @return {util.DriveConnectionType} Connection type. | |
| 341 */ | |
| 342 VolumeManager.prototype.getDriveConnectionState = function() { | |
| 343 return this.driveConnectionState_; | |
| 344 }; | |
| 345 | |
| 346 /** | |
| 347 * VolumeManager extends cr.EventTarget. | |
| 348 */ | |
| 349 VolumeManager.prototype.__proto__ = cr.EventTarget.prototype; | |
| 350 | |
| 351 /** | |
| 352 * Time in milliseconds that we wait a response for. If no response on | |
| 353 * mount/unmount received the request supposed failed. | |
| 354 */ | |
| 355 VolumeManager.TIMEOUT = 15 * 60 * 1000; | |
| 356 | |
| 357 /** | |
| 358 * Queue to run getInstance sequentially. | |
| 359 * @type {AsyncUtil.Queue} | |
| 360 * @private | |
| 361 */ | |
| 362 VolumeManager.getInstanceQueue_ = new AsyncUtil.Queue(); | |
| 363 | |
| 364 /** | |
| 365 * The singleton instance of VolumeManager. Initialized by the first invocation | |
| 366 * of getInstance(). | |
| 367 * @type {VolumeManager} | |
| 368 * @private | |
| 369 */ | |
| 370 VolumeManager.instance_ = null; | |
| 371 | |
| 372 /** | |
| 373 * Returns the VolumeManager instance asynchronously. If it is not created or | |
| 374 * under initialization, it will waits for the finish of the initialization. | |
| 375 * @param {function(VolumeManager)} callback Called with the VolumeManager | |
| 376 * instance. | |
| 377 */ | |
| 378 VolumeManager.getInstance = function(callback) { | |
| 379 VolumeManager.getInstanceQueue_.run(function(continueCallback) { | |
| 380 if (VolumeManager.instance_) { | |
| 381 callback(VolumeManager.instance_); | |
| 382 continueCallback(); | |
| 383 return; | |
| 384 } | |
| 385 | |
| 386 VolumeManager.instance_ = new VolumeManager(); | |
| 387 VolumeManager.instance_.initialize_(function() { | |
| 388 callback(VolumeManager.instance_); | |
| 389 continueCallback(); | |
| 390 }); | |
| 391 }); | |
| 392 }; | |
| 393 | |
| 394 /** | |
| 395 * Initializes mount points. | |
| 396 * @param {function()} callback Called upon the completion of the | |
| 397 * initialization. | |
| 398 * @private | |
| 399 */ | |
| 400 VolumeManager.prototype.initialize_ = function(callback) { | |
| 401 chrome.fileBrowserPrivate.getVolumeMetadataList(function(volumeMetadataList) { | |
| 402 // Create VolumeInfo for each volume. | |
| 403 var group = new AsyncUtil.Group(); | |
| 404 for (var i = 0; i < volumeMetadataList.length; i++) { | |
| 405 group.add(function(volumeMetadata, continueCallback) { | |
| 406 volumeManagerUtil.createVolumeInfo( | |
| 407 volumeMetadata, | |
| 408 function(volumeInfo) { | |
| 409 this.volumeInfoList.add(volumeInfo); | |
| 410 if (volumeMetadata.volumeType === util.VolumeType.DRIVE) | |
| 411 this.onDriveConnectionStatusChanged_(); | |
| 412 continueCallback(); | |
| 413 }.bind(this)); | |
| 414 }.bind(this, volumeMetadataList[i])); | |
| 415 } | |
| 416 | |
| 417 // Then, finalize the initialization. | |
| 418 group.run(function() { | |
| 419 // Subscribe to the mount completed event when mount points initialized. | |
| 420 chrome.fileBrowserPrivate.onMountCompleted.addListener( | |
| 421 this.onMountCompleted_.bind(this)); | |
| 422 callback(); | |
| 423 }.bind(this)); | |
| 424 }.bind(this)); | |
| 425 }; | |
| 426 | |
| 427 /** | |
| 428 * Event handler called when some volume was mounted or unmounted. | |
| 429 * @param {MountCompletedEvent} event Received event. | |
| 430 * @private | |
| 431 */ | |
| 432 VolumeManager.prototype.onMountCompleted_ = function(event) { | |
| 433 if (event.eventType === 'mount') { | |
| 434 if (event.volumeMetadata.mountPath) { | |
| 435 var requestKey = this.makeRequestKey_( | |
| 436 'mount', | |
| 437 event.volumeMetadata.sourcePath); | |
| 438 | |
| 439 var error = event.status === 'success' ? '' : event.status; | |
| 440 | |
| 441 volumeManagerUtil.createVolumeInfo( | |
| 442 event.volumeMetadata, | |
| 443 function(volumeInfo) { | |
| 444 this.volumeInfoList.add(volumeInfo); | |
| 445 this.finishRequest_(requestKey, event.status, volumeInfo.mountPath); | |
| 446 | |
| 447 if (volumeInfo.volumeType === util.VolumeType.DRIVE) { | |
| 448 // Update the network connection status, because until the | |
| 449 // drive is initialized, the status is set to not ready. | |
| 450 // TODO(hidehiko): The connection status should be migrated into | |
| 451 // VolumeMetadata. | |
| 452 this.onDriveConnectionStatusChanged_(); | |
| 453 } | |
| 454 }.bind(this)); | |
| 455 } else { | |
| 456 console.warn('No mount path.'); | |
| 457 this.finishRequest_(requestKey, event.status); | |
| 458 } | |
| 459 } else if (event.eventType === 'unmount') { | |
| 460 var mountPath = event.volumeMetadata.mountPath; | |
| 461 volumeManagerUtil.validateMountPath(mountPath); | |
| 462 var status = event.status; | |
| 463 if (status === util.VolumeError.PATH_UNMOUNTED) { | |
| 464 console.warn('Volume already unmounted: ', mountPath); | |
| 465 status = 'success'; | |
| 466 } | |
| 467 var requestKey = this.makeRequestKey_('unmount', mountPath); | |
| 468 var requested = requestKey in this.requests_; | |
| 469 if (event.status === 'success' && !requested && | |
| 470 this.volumeInfoList.find(mountPath)) { | |
| 471 console.warn('Mounted volume without a request: ', mountPath); | |
| 472 var e = new Event('externally-unmounted'); | |
| 473 e.mountPath = mountPath; | |
| 474 this.dispatchEvent(e); | |
| 475 } | |
| 476 this.finishRequest_(requestKey, status); | |
| 477 | |
| 478 if (event.status === 'success') | |
| 479 this.volumeInfoList.remove(mountPath); | |
| 480 } | |
| 481 }; | |
| 482 | |
| 483 /** | |
| 484 * Creates string to match mount events with requests. | |
| 485 * @param {string} requestType 'mount' | 'unmount'. TODO(hidehiko): Replace by | |
| 486 * enum. | |
| 487 * @param {string} path Source path provided by API for mount request, or | |
| 488 * mount path for unmount request. | |
| 489 * @return {string} Key for |this.requests_|. | |
| 490 * @private | |
| 491 */ | |
| 492 VolumeManager.prototype.makeRequestKey_ = function(requestType, path) { | |
| 493 return requestType + ':' + path; | |
| 494 }; | |
| 495 | |
| 496 /** | |
| 497 * @param {string} fileUrl File url to the archive file. | |
| 498 * @param {function(string)} successCallback Success callback. | |
| 499 * @param {function(util.VolumeError)} errorCallback Error callback. | |
| 500 */ | |
| 501 VolumeManager.prototype.mountArchive = function( | |
| 502 fileUrl, successCallback, errorCallback) { | |
| 503 chrome.fileBrowserPrivate.addMount(fileUrl, function(sourcePath) { | |
| 504 console.info( | |
| 505 'Mount request: url=' + fileUrl + '; sourceUrl=' + sourcePath); | |
| 506 var requestKey = this.makeRequestKey_('mount', sourcePath); | |
| 507 this.startRequest_(requestKey, successCallback, errorCallback); | |
| 508 }.bind(this)); | |
| 509 }; | |
| 510 | |
| 511 /** | |
| 512 * Unmounts volume. | |
| 513 * @param {string} mountPath Volume mounted path. | |
| 514 * @param {function(string)} successCallback Success callback. | |
| 515 * @param {function(util.VolumeError)} errorCallback Error callback. | |
| 516 */ | |
| 517 VolumeManager.prototype.unmount = function(mountPath, | |
| 518 successCallback, | |
| 519 errorCallback) { | |
| 520 volumeManagerUtil.validateMountPath(mountPath); | |
| 521 var volumeInfo = this.volumeInfoList.find(mountPath); | |
| 522 if (!volumeInfo) { | |
| 523 errorCallback(util.VolumeError.NOT_MOUNTED); | |
| 524 return; | |
| 525 } | |
| 526 | |
| 527 chrome.fileBrowserPrivate.removeMount(util.makeFilesystemUrl(mountPath)); | |
| 528 var requestKey = this.makeRequestKey_('unmount', volumeInfo.mountPath); | |
| 529 this.startRequest_(requestKey, successCallback, errorCallback); | |
| 530 }; | |
| 531 | |
| 532 /** | |
| 533 * Resolve the path to its entry. | |
| 534 * @param {string} path The path to be resolved. | |
| 535 * @param {function(Entry)} successCallback Called with the resolved entry on | |
| 536 * success. | |
| 537 * @param {function(FileError)} errorCallback Called on error. | |
| 538 */ | |
| 539 VolumeManager.prototype.resolvePath = function( | |
| 540 path, successCallback, errorCallback) { | |
| 541 // Make sure the path is in the mounted volume. | |
| 542 var mountPath = PathUtil.isDriveBasedPath(path) ? | |
| 543 RootDirectory.DRIVE : PathUtil.getRootPath(path); | |
| 544 var volumeInfo = this.getVolumeInfo(mountPath); | |
| 545 if (!volumeInfo || !volumeInfo.root) { | |
| 546 errorCallback(util.createFileError(FileError.NOT_FOUND_ERR)); | |
| 547 return; | |
| 548 } | |
| 549 | |
| 550 webkitResolveLocalFileSystemURL( | |
| 551 util.makeFilesystemUrl(path), successCallback, errorCallback); | |
| 552 }; | |
| 553 | |
| 554 /** | |
| 555 * @param {string} mountPath Volume mounted path. | |
| 556 * @return {VolumeInfo} The data about the volume. | |
| 557 */ | |
| 558 VolumeManager.prototype.getVolumeInfo = function(mountPath) { | |
| 559 volumeManagerUtil.validateMountPath(mountPath); | |
| 560 return this.volumeInfoList.find(mountPath); | |
| 561 }; | |
| 562 | |
| 563 /** | |
| 564 * @param {string} key Key produced by |makeRequestKey_|. | |
| 565 * @param {function(string)} successCallback To be called when request finishes | |
| 566 * successfully. | |
| 567 * @param {function(util.VolumeError)} errorCallback To be called when | |
| 568 * request fails. | |
| 569 * @private | |
| 570 */ | |
| 571 VolumeManager.prototype.startRequest_ = function(key, | |
| 572 successCallback, errorCallback) { | |
| 573 if (key in this.requests_) { | |
| 574 var request = this.requests_[key]; | |
| 575 request.successCallbacks.push(successCallback); | |
| 576 request.errorCallbacks.push(errorCallback); | |
| 577 } else { | |
| 578 this.requests_[key] = { | |
| 579 successCallbacks: [successCallback], | |
| 580 errorCallbacks: [errorCallback], | |
| 581 | |
| 582 timeout: setTimeout(this.onTimeout_.bind(this, key), | |
| 583 VolumeManager.TIMEOUT) | |
| 584 }; | |
| 585 } | |
| 586 }; | |
| 587 | |
| 588 /** | |
| 589 * Called if no response received in |TIMEOUT|. | |
| 590 * @param {string} key Key produced by |makeRequestKey_|. | |
| 591 * @private | |
| 592 */ | |
| 593 VolumeManager.prototype.onTimeout_ = function(key) { | |
| 594 this.invokeRequestCallbacks_(this.requests_[key], | |
| 595 util.VolumeError.TIMEOUT); | |
| 596 delete this.requests_[key]; | |
| 597 }; | |
| 598 | |
| 599 /** | |
| 600 * @param {string} key Key produced by |makeRequestKey_|. | |
| 601 * @param {util.VolumeError|'success'} status Status received from the API. | |
| 602 * @param {string=} opt_mountPath Mount path. | |
| 603 * @private | |
| 604 */ | |
| 605 VolumeManager.prototype.finishRequest_ = function(key, status, opt_mountPath) { | |
| 606 var request = this.requests_[key]; | |
| 607 if (!request) | |
| 608 return; | |
| 609 | |
| 610 clearTimeout(request.timeout); | |
| 611 this.invokeRequestCallbacks_(request, status, opt_mountPath); | |
| 612 delete this.requests_[key]; | |
| 613 }; | |
| 614 | |
| 615 /** | |
| 616 * @param {Object} request Structure created in |startRequest_|. | |
| 617 * @param {util.VolumeError|string} status If status == 'success' | |
| 618 * success callbacks are called. | |
| 619 * @param {string=} opt_mountPath Mount path. Required if success. | |
| 620 * @private | |
| 621 */ | |
| 622 VolumeManager.prototype.invokeRequestCallbacks_ = function(request, status, | |
| 623 opt_mountPath) { | |
| 624 var callEach = function(callbacks, self, args) { | |
| 625 for (var i = 0; i < callbacks.length; i++) { | |
| 626 callbacks[i].apply(self, args); | |
| 627 } | |
| 628 }; | |
| 629 if (status == 'success') { | |
| 630 callEach(request.successCallbacks, this, [opt_mountPath]); | |
| 631 } else { | |
| 632 volumeManagerUtil.validateError(status); | |
| 633 callEach(request.errorCallbacks, this, [status]); | |
| 634 } | |
| 635 }; | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 39123003:
[Files.app] Split the JavaScript files into subdirectories: common, background, and foreground (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src