Remove some platform specific stuff from views.

ui/file_manager/file_manager/background/js/background.js

Index: ui/file_manager/file_manager/background/js/background.js
diff --git a/ui/file_manager/file_manager/background/js/background.js b/ui/file_manager/file_manager/background/js/background.js
deleted file mode 100644
index e21cf5101b2782ef7c9665931f7947d42c9c79a2..0000000000000000000000000000000000000000
--- a/ui/file_manager/file_manager/background/js/background.js
+++ /dev/null
@@ -1,530 +0,0 @@
-// Copyright (c) 2012 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.
-
-'use strict';
-
-/**
- * Type of a Files.app's instance launch.
- * @enum {number}
- */
-var LaunchType = {
-  ALWAYS_CREATE: 0,
-  FOCUS_ANY_OR_CREATE: 1,
-  FOCUS_SAME_OR_CREATE: 2
-};
-Object.freeze(LaunchType);
-
-/**
- * Root class of the background page.
- * @constructor
- * @extends {BackgroundBase}
- */
-function FileBrowserBackground() {
-  BackgroundBase.call(this);
-
-  /**
-   * Map of all currently open file dialogs. The key is an app ID.
-   * @type {Object.<string, Window>}
-   */
-  this.dialogs = {};
-
-  /**
-   * Synchronous queue for asynchronous calls.
-   * @type {AsyncUtil.Queue}
-   */
-  this.queue = new AsyncUtil.Queue();
-
-  /**
-   * Progress center of the background page.
-   * @type {ProgressCenter}
-   */
-  this.progressCenter = new ProgressCenter();
-
-  /**
-   * File operation manager.
-   * @type {FileOperationManager}
-   */
-  this.fileOperationManager = new FileOperationManager();
-
-  /**
-   * Event handler for progress center.
-   * @type {FileOperationHandler}
-   * @private
-   */
-  this.fileOperationHandler_ = new FileOperationHandler(this);
-
-  /**
-   * Event handler for C++ sides notifications.
-   * @type {DeviceHandler}
-   * @private
-   */
-  this.deviceHandler_ = new DeviceHandler();
-  this.deviceHandler_.addEventListener(
-      DeviceHandler.VOLUME_NAVIGATION_REQUESTED,
-      function(event) {
-        this.navigateToVolume_(event.devicePath);
-      }.bind(this));
-
-  /**
-   * Drive sync handler.
-   * @type {DriveSyncHandler}
-   * @private
-   */
-  this.driveSyncHandler_ = new DriveSyncHandler(this.progressCenter);
-  this.driveSyncHandler_.addEventListener(
-      DriveSyncHandler.COMPLETED_EVENT,
-      function() { this.tryClose(); }.bind(this));
-
-  /**
-   * Promise of string data.
-   * @type {Promise}
-   */
-  this.stringDataPromise = new Promise(function(fulfill) {
-    chrome.fileManagerPrivate.getStrings(fulfill);
-  });
-
-  /**
-   * String assets.
-   * @type {Object.<string, string>}
-   */
-  this.stringData = null;
-
-  /**
-   * Callback list to be invoked after initialization.
-   * It turns to null after initialization.
-   *
-   * @type {Array.<function()>}
-   * @private
-   */
-  this.initializeCallbacks_ = [];
-
-  /**
-   * Last time when the background page can close.
-   *
-   * @type {?number}
-   * @private
-   */
-  this.lastTimeCanClose_ = null;
-
-  // Seal self.
-  Object.seal(this);
-
-  // Initialize handlers.
-  chrome.fileBrowserHandler.onExecute.addListener(this.onExecute_.bind(this));
-  chrome.app.runtime.onLaunched.addListener(this.onLaunched_.bind(this));
-  chrome.app.runtime.onRestarted.addListener(this.onRestarted_.bind(this));
-  chrome.contextMenus.onClicked.addListener(
-      this.onContextMenuClicked_.bind(this));
-
-  this.queue.run(function(callback) {
-    this.stringDataPromise.then(function(strings) {
-      // Init string data.
-      this.stringData = strings;
-      loadTimeData.data = strings;
-
-      // Init context menu.
-      this.initContextMenu_();
-
-      callback();
-    }.bind(this)).catch(function(error) {
-      console.error(error.stack || error);
-      callback();
-    });
-  }.bind(this));
-}
-
-/**
- * A number of delay milliseconds from the first call of tryClose to the actual
- * close action.
- * @type {number}
- * @const
- * @private
- */
-FileBrowserBackground.CLOSE_DELAY_MS_ = 5000;
-
-FileBrowserBackground.prototype = {
-  __proto__: BackgroundBase.prototype
-};
-
-/**
- * Register callback to be invoked after initialization.
- * If the initialization is already done, the callback is invoked immediately.
- *
- * @param {function()} callback Initialize callback to be registered.
- */
-FileBrowserBackground.prototype.ready = function(callback) {
-  this.stringDataPromise.then(callback);
-};
-
-/**
- * Checks the current condition of background page.
- * @return {boolean} True if the background page is closable, false if not.
- */
-FileBrowserBackground.prototype.canClose = function() {
-  // If the file operation is going, the background page cannot close.
-  if (this.fileOperationManager.hasQueuedTasks() ||
-      this.driveSyncHandler_.syncing) {
-    this.lastTimeCanClose_ = null;
-    return false;
-  }
-
-  var views = chrome.extension.getViews();
-  var closing = false;
-  for (var i = 0; i < views.length; i++) {
-    // If the window that is not the background page itself and it is not
-    // closing, the background page cannot close.
-    if (views[i] !== window && !views[i].closing) {
-      this.lastTimeCanClose_ = null;
-      return false;
-    }
-    closing = closing || views[i].closing;
-  }
-
-  // If some windows are closing, or the background page can close but could not
-  // 5 seconds ago, We need more time for sure.
-  if (closing ||
-      this.lastTimeCanClose_ === null ||
-      (Date.now() - this.lastTimeCanClose_ <
-           FileBrowserBackground.CLOSE_DELAY_MS_)) {
-    if (this.lastTimeCanClose_ === null)
-      this.lastTimeCanClose_ = Date.now();
-    setTimeout(this.tryClose.bind(this), FileBrowserBackground.CLOSE_DELAY_MS_);
-    return false;
-  }
-
-  // Otherwise we can close the background page.
-  return true;
-};
-
-/**
- * Opens the root directory of the volume in Files.app.
- * @param {string} devicePath Device path to a volume to be opened.
- * @private
- */
-FileBrowserBackground.prototype.navigateToVolume_ = function(devicePath) {
-  VolumeManager.getInstance().then(function(volumeManager) {
-    var volumeInfoList = volumeManager.volumeInfoList;
-    for (var i = 0; i < volumeInfoList.length; i++) {
-      if (volumeInfoList.item(i).devicePath == devicePath)
-        return volumeInfoList.item(i).resolveDisplayRoot();
-    }
-    return Promise.reject(
-        'Volume having the device path: ' + devicePath + ' is not found.');
-  }).then(function(entry) {
-    launchFileManager(
-        {currentDirectoryURL: entry.toURL()},
-        /* App ID */ undefined,
-        LaunchType.FOCUS_SAME_OR_CREATE);
-  }).catch(function(error) {
-    console.error(error.stack || error);
-  });
-};
-
-/**
- * Prefix for the file manager window ID.
- * @type {string}
- * @const
- */
-var FILES_ID_PREFIX = 'files#';
-
-/**
- * Regexp matching a file manager window ID.
- * @type {RegExp}
- * @const
- */
-var FILES_ID_PATTERN = new RegExp('^' + FILES_ID_PREFIX + '(\\d*)$');
-
-/**
- * Prefix for the dialog ID.
- * @type {string}
- * @const
- */
-var DIALOG_ID_PREFIX = 'dialog#';
-
-/**
- * Value of the next file manager window ID.
- * @type {number}
- */
-var nextFileManagerWindowID = 0;
-
-/**
- * Value of the next file manager dialog ID.
- * @type {number}
- */
-var nextFileManagerDialogID = 0;
-
-/**
- * File manager window create options.
- * @type {Object}
- * @const
- */
-var FILE_MANAGER_WINDOW_CREATE_OPTIONS = Object.freeze({
-  bounds: Object.freeze({
-    left: Math.round(window.screen.availWidth * 0.1),
-    top: Math.round(window.screen.availHeight * 0.1),
-    width: Math.round(window.screen.availWidth * 0.8),
-    height: Math.round(window.screen.availHeight * 0.8)
-  }),
-  minWidth: 480,
-  minHeight: 300,
-  hidden: true
-});
-
-/**
- * @param {Object=} opt_appState App state.
- * @param {number=} opt_id Window id.
- * @param {LaunchType=} opt_type Launch type. Default: ALWAYS_CREATE.
- * @param {function(string)=} opt_callback Completion callback with the App ID.
- */
-function launchFileManager(opt_appState, opt_id, opt_type, opt_callback) {
-  var type = opt_type || LaunchType.ALWAYS_CREATE;
-
-  // Wait until all windows are created.
-  background.queue.run(function(onTaskCompleted) {
-    // Check if there is already a window with the same URL. If so, then
-    // reuse it instead of opening a new one.
-    if (type == LaunchType.FOCUS_SAME_OR_CREATE ||
-        type == LaunchType.FOCUS_ANY_OR_CREATE) {
-      if (opt_appState) {
-        for (var key in background.appWindows) {
-          if (!key.match(FILES_ID_PATTERN))
-            continue;
-
-          var contentWindow = background.appWindows[key].contentWindow;
-          if (!contentWindow.appState)
-            continue;
-
-          // Different current directories.
-          if (opt_appState.currentDirectoryURL !==
-                  contentWindow.appState.currentDirectoryURL) {
-            continue;
-          }
-
-          // Selection URL specified, and it is different.
-          if (opt_appState.selectionURL &&
-                  opt_appState.selectionURL !==
-                  contentWindow.appState.selectionURL) {
-            continue;
-          }
-
-          AppWindowWrapper.focusOnDesktop(
-              background.appWindows[key], opt_appState.displayedId);
-          if (opt_callback)
-            opt_callback(key);
-          onTaskCompleted();
-          return;
-        }
-      }
-    }
-
-    // Focus any window if none is focused. Try restored first.
-    if (type == LaunchType.FOCUS_ANY_OR_CREATE) {
-      // If there is already a focused window, then finish.
-      for (var key in background.appWindows) {
-        if (!key.match(FILES_ID_PATTERN))
-          continue;
-
-        // The isFocused() method should always be available, but in case
-        // Files.app's failed on some error, wrap it with try catch.
-        try {
-          if (background.appWindows[key].contentWindow.isFocused()) {
-            if (opt_callback)
-              opt_callback(key);
-            onTaskCompleted();
-            return;
-          }
-        } catch (e) {
-          console.error(e.message);
-        }
-      }
-      // Try to focus the first non-minimized window.
-      for (var key in background.appWindows) {
-        if (!key.match(FILES_ID_PATTERN))
-          continue;
-
-        if (!background.appWindows[key].isMinimized()) {
-          AppWindowWrapper.focusOnDesktop(
-              background.appWindows[key], (opt_appState || {}).displayedId);
-          if (opt_callback)
-            opt_callback(key);
-          onTaskCompleted();
-          return;
-        }
-      }
-      // Restore and focus any window.
-      for (var key in background.appWindows) {
-        if (!key.match(FILES_ID_PATTERN))
-          continue;
-
-        AppWindowWrapper.focusOnDesktop(
-            background.appWindows[key], (opt_appState || {}).displayedId);
-        if (opt_callback)
-          opt_callback(key);
-        onTaskCompleted();
-        return;
-      }
-    }
-
-    // Create a new instance in case of ALWAYS_CREATE type, or as a fallback
-    // for other types.
-
-    var id = opt_id || nextFileManagerWindowID;
-    nextFileManagerWindowID = Math.max(nextFileManagerWindowID, id + 1);
-    var appId = FILES_ID_PREFIX + id;
-
-    var appWindow = new AppWindowWrapper(
-        'main.html',
-        appId,
-        FILE_MANAGER_WINDOW_CREATE_OPTIONS);
-    appWindow.launch(opt_appState || {}, false, function() {
-      AppWindowWrapper.focusOnDesktop(
-          appWindow.rawAppWindow, (opt_appState || {}).displayedId);
-      if (opt_callback)
-        opt_callback(appId);
-      onTaskCompleted();
-    });
-  });
-}
-
-/**
- * Registers dialog window to the background page.
- *
- * @param {Window} dialogWindow Window of the dialog.
- */
-function registerDialog(dialogWindow) {
-  var id = DIALOG_ID_PREFIX + (nextFileManagerDialogID++);
-  background.dialogs[id] = dialogWindow;
-  dialogWindow.addEventListener('pagehide', function() {
-    delete background.dialogs[id];
-  });
-}
-
-/**
- * Executes a file browser task.
- *
- * @param {string} action Task id.
- * @param {Object} details Details object.
- * @private
- */
-FileBrowserBackground.prototype.onExecute_ = function(action, details) {
-  var appState = {
-    params: {action: action},
-    // It is not allowed to call getParent() here, since there may be
-    // no permissions to access it at this stage. Therefore we are passing
-    // the selectionURL only, and the currentDirectory will be resolved
-    // later.
-    selectionURL: details.entries[0].toURL()
-  };
-
-  // Every other action opens a Files app window.
-  // For mounted devices just focus any Files.app window. The mounted
-  // volume will appear on the navigation list.
-  launchFileManager(
-      appState,
-      /* App ID */ undefined,
-      LaunchType.FOCUS_SAME_OR_CREATE);
-};
-
-/**
- * Launches the app.
- * @private
- */
-FileBrowserBackground.prototype.onLaunched_ = function() {
-  if (nextFileManagerWindowID == 0) {
-    // The app just launched. Remove window state records that are not needed
-    // any more.
-    chrome.storage.local.get(function(items) {
-      for (var key in items) {
-        if (items.hasOwnProperty(key)) {
-          if (key.match(FILES_ID_PATTERN))
-            chrome.storage.local.remove(key);
-        }
-      }
-    });
-  }
-  launchFileManager(null, undefined, LaunchType.FOCUS_ANY_OR_CREATE);
-};
-
-/**
- * Restarted the app, restore windows.
- * @private
- */
-FileBrowserBackground.prototype.onRestarted_ = function() {
-  // Reopen file manager windows.
-  chrome.storage.local.get(function(items) {
-    for (var key in items) {
-      if (items.hasOwnProperty(key)) {
-        var match = key.match(FILES_ID_PATTERN);
-        if (match) {
-          var id = Number(match[1]);
-          try {
-            var appState = /** @type {Object} */ (JSON.parse(items[key]));
-            launchFileManager(appState, id);
-          } catch (e) {
-            console.error('Corrupt launch data for ' + id);
-          }
-        }
-      }
-    }
-  });
-};
-
-/**
- * Handles clicks on a custom item on the launcher context menu.
- * @param {OnClickData} info Event details.
- * @private
- */
-FileBrowserBackground.prototype.onContextMenuClicked_ = function(info) {
-  if (info.menuItemId == 'new-window') {
-    // Find the focused window (if any) and use it's current url for the
-    // new window. If not found, then launch with the default url.
-    for (var key in background.appWindows) {
-      try {
-        if (background.appWindows[key].contentWindow.isFocused()) {
-          var appState = {
-            // Do not clone the selection url, only the current directory.
-            currentDirectoryURL: background.appWindows[key].contentWindow.
-                appState.currentDirectoryURL
-          };
-          launchFileManager(appState);
-          return;
-        }
-      } catch (ignore) {
-        // The isFocused method may not be defined during initialization.
-        // Therefore, wrapped with a try-catch block.
-      }
-    }
-
-    // Launch with the default URL.
-    launchFileManager();
-  }
-};
-
-/**
- * Initializes the context menu. Recreates if already exists.
- * @private
- */
-FileBrowserBackground.prototype.initContextMenu_ = function() {
-  try {
-    // According to the spec [1], the callback is optional. But no callback
-    // causes an error for some reason, so we call it with null-callback to
-    // prevent the error. http://crbug.com/353877
-    // - [1] https://developer.chrome.com/extensions/contextMenus#method-remove
-    chrome.contextMenus.remove('new-window', function() {});
-  } catch (ignore) {
-    // There is no way to detect if the context menu is already added, therefore
-    // try to recreate it every time.
-  }
-  chrome.contextMenus.create({
-    id: 'new-window',
-    contexts: ['launcher'],
-    title: str('NEW_WINDOW_BUTTON_LABEL')
-  });
-};
-
-/**
- * Singleton instance of Background.
- * @type {FileBrowserBackground}
- */
-window.background = new FileBrowserBackground();