EditorTheme.js

/*
 * Copyright (c) 2012 Adobe Systems Incorporated. All rights reserved.
 *  
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the 
 * Software is furnished to do so, subject to the following conditions:
 *  
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *  
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 * 
 */

/*jslint vars: true, plusplus: true, devel: true, browser: true, nomen: true, indent: 4, maxerr: 50 */
/*global define: false, FileError: false */

//TODO: rename to EditorThemeManager?

 /**
  * Manages global application commands that can be called from menu items, key bindings, or subparts
  * of the application.
  */
define(function (require, exports, module) {
    'use strict';
    
    var NativeFileSystem    = require("file/NativeFileSystem").NativeFileSystem;
    var FileUtils = require("file/FileUtils");
    
    //TODO: where is the right place for this?
    var THEME_DIRECTORY = "/Users/mesh/tmp/themes/";
    var THEME_STYLE_NAME = "editor.css";
    var THEME_PACKAGE_NAME = "package.json";
    
    var _getErrorMessage = function (fileError) {
        var msg = '';

        switch (fileError.code) {
        case FileError.QUOTA_EXCEEDED_ERR:
            msg = 'QUOTA_EXCEEDED_ERR';
            break;
        case FileError.NOT_FOUND_ERR:
            msg = 'NOT_FOUND_ERR';
            break;
        case FileError.SECURITY_ERR:
            msg = 'SECURITY_ERR';
            break;
        case FileError.INVALID_MODIFICATION_ERR:
            msg = 'INVALID_MODIFICATION_ERR';
            break;
        case FileError.INVALID_STATE_ERR:
            msg = 'INVALID_STATE_ERR';
            break;
        default:
            msg = 'Unknown Error';
            break;
        }

        return msg;
    };
    
    var _loadTheme = function (themeName) {

        var directory = new NativeFileSystem.DirectoryEntry(themeName);
        
        //TODO : need util API for combining paths
        var themePath = THEME_DIRECTORY + themeName;
        
        NativeFileSystem.requestNativeFileSystem(
            themePath,
            function (directoryEntry) {
                directoryEntry.getFile(
                    themePath + "/" + THEME_PACKAGE_NAME,
                    {},
                    function (fileEntry) {
                        fileEntry.file(
                            function (file) {
                                var reader = new NativeFileSystem.FileReader();

                                reader.onloadend = function (e) {
                                    console.log("data loaded");
                                    console.log(this.result);
                                };
                                
                                reader.onerror = function (e) {
                                    console.log("onerror");
                                    console.log(_getErrorMessage(e.target.error));
                                };
                                    
                                reader.readAsText(file);
                            },
                            function (e) {
                                console.log("error");
                                console.log(e);
                            }
                        );
                    },
                    function (error) {
                        console.log(_getErrorMessage(error));
                    }
                );
            },
            //todo: need constants for file errors
            function (error) {
                console.log("failure");
                console.log(error);
            }
        );
    };
    
        /*
    var _addTheme = function(themePath){
    }
        
    var _removeTheme = function(themeName){
    }
    */
    exports.loadTheme = _loadTheme;
});