| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| cr.define('downloads', function() { |
| /** |
| * @param {string} chromeSendName |
| * @return {function(string):void} A chrome.send() callback with curried name. |
| */ |
| function chromeSendWithId(chromeSendName) { |
| return function(id) { chrome.send(chromeSendName, [id]); }; |
| } |
| |
| /** @constructor */ |
| function ActionService() { |
| /** @private {Array<string>} */ |
| this.searchTerms_ = []; |
| } |
| |
| /** |
| * @param {string} s |
| * @return {string} |s| without whitespace at the beginning or end. |
| */ |
| function trim(s) { return s.trim(); } |
| |
| /** |
| * @param {string|undefined} value |
| * @return {boolean} Whether |value| is truthy. |
| */ |
| function truthy(value) { return !!value; } |
| |
| /** |
| * @param {string} searchText Input typed by the user into a search box. |
| * @return {Array<string>} A list of terms extracted from |searchText|. |
| */ |
| ActionService.splitTerms = function(searchText) { |
| // Split quoted terms (e.g., 'The "lazy" dog' => ['The', 'lazy', 'dog']). |
| return searchText.split(/"([^"]*)"/).map(trim).filter(truthy); |
| }; |
| |
| ActionService.prototype = { |
| /** @param {string} id ID of the download to cancel. */ |
| cancel: chromeSendWithId('cancel'), |
| |
| /** Instructs the browser to clear all finished downloads. */ |
| clearAll: function() { |
| if (loadTimeData.getBoolean('allowDeletingHistory')) { |
| chrome.send('clearAll'); |
| this.search(''); |
| } |
| }, |
| |
| /** @param {string} id ID of the dangerous download to discard. */ |
| discardDangerous: chromeSendWithId('discardDangerous'), |
| |
| /** @param {string} url URL of a file to download. */ |
| download: function(url) { |
| var a = document.createElement('a'); |
| a.href = url; |
| a.setAttribute('download', ''); |
| a.click(); |
| }, |
| |
| /** @param {string} id ID of the download that the user started dragging. */ |
| drag: chromeSendWithId('drag'), |
| |
| /** Loads more downloads with the current search terms. */ |
| loadMore: function() { |
| chrome.send('getDownloads', this.searchTerms_); |
| }, |
| |
| /** |
| * @return {boolean} Whether the user is currently searching for downloads |
| * (i.e. has a non-empty search term). |
| */ |
| isSearching: function() { |
| return this.searchTerms_.length > 0; |
| }, |
| |
| /** Opens the current local destination for downloads. */ |
| openDownloadsFolder: chrome.send.bind(chrome, 'openDownloadsFolder'), |
| |
| /** |
| * @param {string} id ID of the download to run locally on the user's box. |
| */ |
| openFile: chromeSendWithId('openFile'), |
| |
| /** @param {string} id ID the of the progressing download to pause. */ |
| pause: chromeSendWithId('pause'), |
| |
| /** @param {string} id ID of the finished download to remove. */ |
| remove: chromeSendWithId('remove'), |
| |
| /** @param {string} id ID of the paused download to resume. */ |
| resume: chromeSendWithId('resume'), |
| |
| /** |
| * @param {string} id ID of the dangerous download to save despite |
| * warnings. |
| */ |
| saveDangerous: chromeSendWithId('saveDangerous'), |
| |
| /** @param {string} searchText What to search for. */ |
| search: function(searchText) { |
| var searchTerms = ActionService.splitTerms(searchText); |
| var sameTerms = searchTerms.length == this.searchTerms_.length; |
| |
| for (var i = 0; sameTerms && i < searchTerms.length; ++i) { |
| if (searchTerms[i] != this.searchTerms_[i]) |
| sameTerms = false; |
| } |
| |
| if (sameTerms) |
| return; |
| |
| this.searchTerms_ = searchTerms; |
| this.loadMore(); |
| }, |
| |
| /** |
| * Shows the local folder a finished download resides in. |
| * @param {string} id ID of the download to show. |
| */ |
| show: chromeSendWithId('show'), |
| |
| /** Undo download removal. */ |
| undo: chrome.send.bind(chrome, 'undo'), |
| }; |
| |
| cr.addSingletonGetter(ActionService); |
| |
| return {ActionService: ActionService}; |
| }); |