[Files.app] Split the JavaScript files into subdirectories: common, background, and foreground

chrome/browser/resources/file_manager/js/photo/gallery_item.js

-// 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';
-
-/**
- * Object representing an image item (a photo or a video).
- *
- * @param {string} url Image url.
- * @constructor
- */
-Gallery.Item = function(url) {
-  this.url_ = url;
-  this.original_ = true;
-};
-
-/**
- * @return {string} Image url.
- */
-Gallery.Item.prototype.getUrl = function() { return this.url_ };
-
-/**
- * @param {string} url New url.
- */
-Gallery.Item.prototype.setUrl = function(url) { this.url_ = url };
-
-/**
- * @return {string} File name.
- */
-Gallery.Item.prototype.getFileName = function() {
-  return ImageUtil.getFullNameFromUrl(this.url_);
-};
-
-/**
- * @return {boolean} True if this image has not been created in this session.
- */
-Gallery.Item.prototype.isOriginal = function() { return this.original_ };
-
-// TODO: Localize?
-/**
- * @type {string} Suffix for a edited copy file name.
- */
-Gallery.Item.COPY_SIGNATURE = ' - Edited';
-
-/**
- * Regular expression to match '... - Edited'.
- * @type {RegExp}
- */
-Gallery.Item.REGEXP_COPY_0 =
-    new RegExp('^(.+)' + Gallery.Item.COPY_SIGNATURE + '$');
-
-/**
- * Regular expression to match '... - Edited (N)'.
- * @type {RegExp}
- */
-Gallery.Item.REGEXP_COPY_N =
-    new RegExp('^(.+)' + Gallery.Item.COPY_SIGNATURE + ' \\((\\d+)\\)$');
-
-/**
- * Create a name for an edited copy of the file.
- *
- * @param {Entry} dirEntry Entry.
- * @param {function} callback Callback.
- * @private
- */
-Gallery.Item.prototype.createCopyName_ = function(dirEntry, callback) {
-  var name = this.getFileName();
-
-  // If the item represents a file created during the current Gallery session
-  // we reuse it for subsequent saves instead of creating multiple copies.
-  if (!this.original_) {
-    callback(name);
-    return;
-  }
-
-  var ext = '';
-  var index = name.lastIndexOf('.');
-  if (index != -1) {
-    ext = name.substr(index);
-    name = name.substr(0, index);
-  }
-
-  if (!ext.match(/jpe?g/i)) {
-    // Chrome can natively encode only two formats: JPEG and PNG.
-    // All non-JPEG images are saved in PNG, hence forcing the file extension.
-    ext = '.png';
-  }
-
-  function tryNext(tries) {
-    // All the names are used. Let's overwrite the last one.
-    if (tries == 0) {
-      setTimeout(callback, 0, name + ext);
-      return;
-    }
-
-    // If the file name contains the copy signature add/advance the sequential
-    // number.
-    var matchN = Gallery.Item.REGEXP_COPY_N.exec(name);
-    var match0 = Gallery.Item.REGEXP_COPY_0.exec(name);
-    if (matchN && matchN[1] && matchN[2]) {
-      var copyNumber = parseInt(matchN[2], 10) + 1;
-      name = matchN[1] + Gallery.Item.COPY_SIGNATURE + ' (' + copyNumber + ')';
-    } else if (match0 && match0[1]) {
-      name = match0[1] + Gallery.Item.COPY_SIGNATURE + ' (1)';
-    } else {
-      name += Gallery.Item.COPY_SIGNATURE;
-    }
-
-    dirEntry.getFile(name + ext, {create: false, exclusive: false},
-        tryNext.bind(null, tries - 1),
-        callback.bind(null, name + ext));
-  }
-
-  tryNext(10);
-};
-
-/**
- * Write the new item content to the file.
- *
- * @param {Entry} overrideDir Directory to save to. If null, save to the same
- *   directory as the original.
- * @param {boolean} overwrite True if overwrite, false if copy.
- * @param {HTMLCanvasElement} canvas Source canvas.
- * @param {ImageEncoder.MetadataEncoder} metadataEncoder MetadataEncoder.
- * @param {function(boolean)=} opt_callback Callback accepting true for success.
- */
-Gallery.Item.prototype.saveToFile = function(
-    overrideDir, overwrite, canvas, metadataEncoder, opt_callback) {
-  ImageUtil.metrics.startInterval(ImageUtil.getMetricName('SaveTime'));
-
-  var name = this.getFileName();
-
-  var onSuccess = function(url) {
-    ImageUtil.metrics.recordEnum(ImageUtil.getMetricName('SaveResult'), 1, 2);
-    ImageUtil.metrics.recordInterval(ImageUtil.getMetricName('SaveTime'));
-    this.setUrl(url);
-    if (opt_callback) opt_callback(true);
-  }.bind(this);
-
-  function onError(error) {
-    console.error('Error saving from gallery', name, error);
-    ImageUtil.metrics.recordEnum(ImageUtil.getMetricName('SaveResult'), 0, 2);
-    if (opt_callback) opt_callback(false);
-  }
-
-  function doSave(newFile, fileEntry) {
-    fileEntry.createWriter(function(fileWriter) {
-      function writeContent() {
-        fileWriter.onwriteend = onSuccess.bind(null, fileEntry.toURL());
-        fileWriter.write(ImageEncoder.getBlob(canvas, metadataEncoder));
-      }
-      fileWriter.onerror = function(error) {
-        onError(error);
-        // Disable all callbacks on the first error.
-        fileWriter.onerror = null;
-        fileWriter.onwriteend = null;
-      };
-      if (newFile) {
-        writeContent();
-      } else {
-        fileWriter.onwriteend = writeContent;
-        fileWriter.truncate(0);
-      }
-    }, onError);
-  }
-
-  function getFile(dir, newFile) {
-    dir.getFile(name, {create: newFile, exclusive: newFile},
-        doSave.bind(null, newFile), onError);
-  }
-
-  function checkExistence(dir) {
-    dir.getFile(name, {create: false, exclusive: false},
-        getFile.bind(null, dir, false /* existing file */),
-        getFile.bind(null, dir, true /* create new file */));
-  }
-
-  var saveToDir = function(dir) {
-    if (overwrite) {
-      checkExistence(dir);
-    } else {
-      this.createCopyName_(dir, function(copyName) {
-        this.original_ = false;
-        name = copyName;
-        checkExistence(dir);
-      }.bind(this));
-    }
-  }.bind(this);
-
-  if (overrideDir) {
-    saveToDir(overrideDir);
-  } else {
-    webkitResolveLocalFileSystemURL(this.getUrl(),
-        function(entry) { entry.getParent(saveToDir, onError)},
-        onError);
-  }
-};
-
-/**
- * Rename the file.
- *
- * @param {string} name New file name.
- * @param {function} onSuccess Success callback.
- * @param {function} onExists Called if the file with the new name exists.
- */
-Gallery.Item.prototype.rename = function(name, onSuccess, onExists) {
-  var oldName = this.getFileName();
-  if (ImageUtil.getExtensionFromFullName(name) ==
-      ImageUtil.getExtensionFromFullName(oldName)) {
-    name = ImageUtil.getFileNameFromFullName(name);
-  }
-  var newName = ImageUtil.replaceFileNameInFullName(oldName, name);
-  if (oldName == newName) return;
-
-  function onError() {
-    console.error('Rename error: "' + oldName + '" to "' + newName + '"');
-  }
-
-  var onRenamed = function(entry) {
-    this.setUrl(entry.toURL());
-    onSuccess();
-  }.bind(this);
-
-  function moveIfDoesNotExist(entry, parentDir) {
-    parentDir.getFile(newName, {create: false, exclusive: false}, onExists,
-        function() { entry.moveTo(parentDir, newName, onRenamed, onError) });
-  }
-
-  webkitResolveLocalFileSystemURL(this.getUrl(),
-      function(entry) {
-        entry.getParent(moveIfDoesNotExist.bind(null, entry), onError);
-      },
-      onError);
-};