/*	Copyright (c) 2004-2006, The Dojo Foundation	All Rights Reserved.	Licensed under the Academic Free License version 2.1 or above OR the	modified BSD license. For more information on Dojo licensing, see:		http://dojotoolkit.org/community/licensing.shtml*/dojo.provide("dojo.storage.browser");dojo.provide("dojo.storage.browser.FlashStorageProvider");dojo.require("dojo.storage");dojo.require("dojo.flash");dojo.require("dojo.json");dojo.require("dojo.uri.*");/** 		Storage provider that uses features in Flash to achieve permanent storage.				@author Alex Russel, alex@dojotoolkit.org		@author Brad Neuberg, bkn3@columbia.edu */dojo.storage.browser.FlashStorageProvider = function(){}dojo.inherits(dojo.storage.browser.FlashStorageProvider, dojo.storage);// instance methods and propertiesdojo.lang.extend(dojo.storage.browser.FlashStorageProvider, {	namespace: "default",	initialized: false,	_available: null,	_statusHandler: null,		initialize: function(){		if(djConfig["disableFlashStorage"] == true){			return;		}				// initialize our Flash		var loadedListener = function(){			dojo.storage._flashLoaded();		}		dojo.flash.addLoadedListener(loadedListener);		var swfloc6 = dojo.uri.dojoUri("Storage_version6.swf").toString();		var swfloc8 = dojo.uri.dojoUri("Storage_version8.swf").toString();		dojo.flash.setSwf({flash6: swfloc6, flash8: swfloc8, visible: false});	},		isAvailable: function(){		if(djConfig["disableFlashStorage"] == true){			this._available = false;		}				return this._available;	},		setNamespace: function(namespace){		this.namespace = namespace;	},	put: function(key, value, resultsHandler){		if(this.isValidKey(key) == false){			dojo.raise("Invalid key given: " + key);		}					this._statusHandler = resultsHandler;				// serialize the value		// Handle strings differently so they have better performance		if(dojo.lang.isString(value)){			value = "string:" + value;		}else{			value = dojo.json.serialize(value);		}				dojo.flash.comm.put(key, value, this.namespace);	},	get: function(key){		if(this.isValidKey(key) == false){			dojo.raise("Invalid key given: " + key);		}				var results = dojo.flash.comm.get(key, this.namespace);		if(results == ""){			return null;		}    		// destringify the content back into a 		// real JavaScript object		// Handle strings differently so they have better performance		if(!dojo.lang.isUndefined(results) && results != null 			 && /^string:/.test(results)){			results = results.substring("string:".length);		}else{			results = dojo.json.evalJson(results);		}    		return results;	},	getKeys: function(){		var results = dojo.flash.comm.getKeys(this.namespace);				if(results == ""){			return new Array();		}		// the results are returned comma seperated; split them		results = results.split(",");				return results;	},	clear: function(){		dojo.flash.comm.clear(this.namespace);	},		remove: function(key){	},		isPermanent: function(){		return true;	},	getMaximumSize: function(){		return dojo.storage.SIZE_NO_LIMIT;	},	hasSettingsUI: function(){		return true;	},	showSettingsUI: function(){		dojo.flash.comm.showSettings();		dojo.flash.obj.setVisible(true);		dojo.flash.obj.center();	},	hideSettingsUI: function(){		// hide the dialog		dojo.flash.obj.setVisible(false);				// call anyone who wants to know the dialog is		// now hidden		if(dojo.storage.onHideSettingsUI != null &&			!dojo.lang.isUndefined(dojo.storage.onHideSettingsUI)){			dojo.storage.onHideSettingsUI.call(null);			}	},		/** 			The provider name as a string, such as 			"dojo.storage.FlashStorageProvider". 	*/	getType: function(){		return "dojo.storage.FlashStorageProvider";	},		/** Called when the Flash is finished loading. */	_flashLoaded: function(){		this.initialized = true;		// indicate that this storage provider is now loaded		dojo.storage.manager.loaded();	},		/** 			Called if the storage system needs to tell us about the status			of a put() request. 	*/	_onStatus: function(statusResult, key){		//dojo.debug("_onStatus, statusResult="+statusResult+", key="+key);		if(statusResult == dojo.storage.PENDING){			dojo.flash.obj.center();			dojo.flash.obj.setVisible(true);		}else{			dojo.flash.obj.setVisible(false);		}				if(!dojo.lang.isUndefined(dojo.storage._statusHandler) 				&& dojo.storage._statusHandler != null){			dojo.storage._statusHandler.call(null, statusResult, key);				}	}});// register the existence of our storage providersdojo.storage.manager.register("dojo.storage.browser.FlashStorageProvider",                              new dojo.storage.browser.FlashStorageProvider());// now that we are loaded and registered tell the storage manager to initialize// itselfdojo.storage.manager.initialize();