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Side by Side Diff: ui/file_manager/image_loader/image_loader_client.js

Issue 571453002: Correct indentation, JSDoc, etc... to comply with closure linter. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase Created 6 years, 3 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 'use strict'; 5 'use strict';
6 6
7 /** 7 /**
8 * Client used to connect to the remote ImageLoader extension. Client class runs 8 * Client used to connect to the remote ImageLoader extension. Client class runs
9 * in the extension, where the client.js is included (eg. Files.app). 9 * in the extension, where the client.js is included (eg. Files.app).
10 * It sends remote requests using IPC to the ImageLoader class and forwards 10 * It sends remote requests using IPC to the ImageLoader class and forwards
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224 224
225 /** 225 /**
226 * Creates a cache key. 226 * Creates a cache key.
227 * 227 *
228 * @param {string} url Image url. 228 * @param {string} url Image url.
229 * @param {Object=} opt_options Loader options as a hash array. 229 * @param {Object=} opt_options Loader options as a hash array.
230 * @return {string} Cache key. 230 * @return {string} Cache key.
231 */ 231 */
232 ImageLoaderClient.Cache.createKey = function(url, opt_options) { 232 ImageLoaderClient.Cache.createKey = function(url, opt_options) {
233 opt_options = opt_options || {}; 233 opt_options = opt_options || {};
234 return JSON.stringify({url: url, 234 return JSON.stringify({
235 orientation: opt_options.orientation, 235 url: url,
236 scale: opt_options.scale, 236 orientation: opt_options.orientation,
237 width: opt_options.width, 237 scale: opt_options.scale,
238 height: opt_options.height, 238 width: opt_options.width,
239 maxWidth: opt_options.maxWidth, 239 height: opt_options.height,
240 maxHeight: opt_options.maxHeight}); 240 maxWidth: opt_options.maxWidth,
241 maxHeight: opt_options.maxHeight});
241 }; 242 };
242 243
243 /** 244 /**
244 * Evicts the least used elements in cache to make space for a new image. 245 * Evicts the least used elements in cache to make space for a new image.
245 * 246 *
246 * @param {number} size Requested size. 247 * @param {number} size Requested size.
247 * @private 248 * @private
248 */ 249 */
249 ImageLoaderClient.Cache.prototype.evictCache_ = function(size) { 250 ImageLoaderClient.Cache.prototype.evictCache_ = function(size) {
250 // Sort from the most recent to the oldest. 251 // Sort from the most recent to the oldest.
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274 this.removeImage(key); 275 this.removeImage(key);
275 276
276 if (ImageLoaderClient.Cache.MEMORY_LIMIT - this.size_ < data.length) { 277 if (ImageLoaderClient.Cache.MEMORY_LIMIT - this.size_ < data.length) {
277 ImageLoaderClient.recordBinary('Evicted', 1); 278 ImageLoaderClient.recordBinary('Evicted', 1);
278 this.evictCache_(data.length); 279 this.evictCache_(data.length);
279 } else { 280 } else {
280 ImageLoaderClient.recordBinary('Evicted', 0); 281 ImageLoaderClient.recordBinary('Evicted', 0);
281 } 282 }
282 283
283 if (ImageLoaderClient.Cache.MEMORY_LIMIT - this.size_ >= data.length) { 284 if (ImageLoaderClient.Cache.MEMORY_LIMIT - this.size_ >= data.length) {
284 this.images_[key] = {lastLoadTimestamp: Date.now(), 285 this.images_[key] = {
285 timestamp: opt_timestamp ? opt_timestamp : null, 286 lastLoadTimestamp: Date.now(),
286 data: data}; 287 timestamp: opt_timestamp ? opt_timestamp : null,
288 data: data
289 };
287 this.size_ += data.length; 290 this.size_ += data.length;
288 } 291 }
289 }; 292 };
290 293
291 /** 294 /**
292 * Loads an image from the cache (if available) or returns null. 295 * Loads an image from the cache (if available) or returns null.
293 * 296 *
294 * @param {string} key Cache key. 297 * @param {string} key Cache key.
295 * @param {number=} opt_timestamp Last modification timestamp. If different 298 * @param {number=} opt_timestamp Last modification timestamp. If different
296 * that the one in cache, then the entry will be invalidated. 299 * that the one in cache, then the entry will be invalidated.
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337 // Helper functions. 340 // Helper functions.
338 341
339 /** 342 /**
340 * Loads and resizes and image. Use opt_isValid to easily cancel requests 343 * Loads and resizes and image. Use opt_isValid to easily cancel requests
341 * which are not valid anymore, which will reduce cpu consumption. 344 * which are not valid anymore, which will reduce cpu consumption.
342 * 345 *
343 * @param {string} url Url of the requested image. 346 * @param {string} url Url of the requested image.
344 * @param {Image} image Image node to load the requested picture into. 347 * @param {Image} image Image node to load the requested picture into.
345 * @param {Object} options Loader options, such as: orientation, scale, 348 * @param {Object} options Loader options, such as: orientation, scale,
346 * maxHeight, width, height and/or cache. 349 * maxHeight, width, height and/or cache.
347 * @param {function=} onSuccess Callback for success. 350 * @param {function} onSuccess Callback for success.
348 * @param {function=} onError Callback for failure. 351 * @param {function} onError Callback for failure.
349 * @param {function=} opt_isValid Function returning false in case 352 * @param {function=} opt_isValid Function returning false in case
350 * a request is not valid anymore, eg. parent node has been detached. 353 * a request is not valid anymore, eg. parent node has been detached.
351 * @return {?number} Remote task id or null if loaded from cache. 354 * @return {?number} Remote task id or null if loaded from cache.
352 */ 355 */
353 ImageLoaderClient.loadToImage = function( 356 ImageLoaderClient.loadToImage = function(
354 url, image, options, onSuccess, onError, opt_isValid) { 357 url, image, options, onSuccess, onError, opt_isValid) {
355 var callback = function(result) { 358 var callback = function(result) {
356 if (result.status == 'error') { 359 if (result.status == 'error') {
357 onError(); 360 onError();
358 return; 361 return;
359 } 362 }
360 image.src = result.data; 363 image.src = result.data;
361 onSuccess(); 364 onSuccess();
362 }; 365 };
363 366
364 return ImageLoaderClient.getInstance().load( 367 return ImageLoaderClient.getInstance().load(
365 url, callback, options, opt_isValid); 368 url, callback, options, opt_isValid);
366 }; 369 };
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