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/*
Copyright (c) 2011, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.com/yui/license.html
version: 2.9.0
*/
/**
* Provides a swf based storage implementation
*
* @module swfstore
*/
/**
* Class for the YUI SWFStore util.
*
* @namespace YAHOO.util
* @class SWFStore
* @uses YAHOO.util.AttributeProvider
* @constructor
* @param containerId {HTMLElement} Container element for the Flash Player instance.
* @param shareData {Boolean} Whether or not data should be shared across browsers
* @param useCompression {Boolean} Container element for the Flash Player instance.
*/
YAHOO.util.SWFStore = function(containerID, shareData, useCompression)
{
//browser detection
var browser;
var newValue;
//convert Booleans to strings for flashvars compatibility
shareData = shareData.toString();
useCompression = useCompression.toString();
if (YAHOO.env.ua.ie) browser = "ie";
else if (YAHOO.env.ua.gecko) browser = "gecko"; //Firefox
else if (YAHOO.env.ua.webkit) browser = "webkit"; // Safari, Webkit
else if (YAHOO.env.ua.caja) browser = "caja";
else if (YAHOO.env.ua.opera) browser = "opera";
else browser = "other";
if(YAHOO.util.Cookie.get("swfstore") == null || YAHOO.util.Cookie.get("swfstore") == "null" || YAHOO.util.Cookie.get("swfstore") == "")
{
newValue = Math.round(Math.random() * Math.PI * 100000);
YAHOO.util.Cookie.set("swfstore", newValue);
}
else
{
newValue = YAHOO.util.Cookie.get("swfstore");
}
var params =
{
version: 9.115,
useExpressInstall: false,
fixedAttributes:
{allowScriptAccess:"always", allowNetworking:"all", scale:"noScale"},
flashVars:
{allowedDomain : document.location.hostname, shareData: shareData, browser: newValue, useCompression: useCompression}
};
this.embeddedSWF = new YAHOO.widget.SWF(containerID, YAHOO.util.SWFStore.SWFURL, params);
/**
* Fires when an error occurs
*
* @event error
* @param event.type {String} The event type
* @param event.message {String} The data
*
*/
this.createEvent("error");
/**
* Fires when there is not enough space available to store the data
*
* @event quotaExceededError
* @param event.type {String} The event type
* @param event.message {String} The data
*
*/
this.createEvent("quotaExceededError");
/**
* Fires when the url matching for the security whitelist is invalid.
* If no whitelist is used, fires when page's url does not match the embedded swf's url
*
* @event securityError
* @param event.type {String} The event type
* @param event.message {String} The data
*
*/
this.createEvent("securityError");
/**
* Fires when a store is saved successfully
*
* @event save
* @param event.type {String} The event type
*
*/
this.createEvent("save");
/**
* Fires when a store is successfully cleared
*
* @event clear
* @param event.type {String} The event type
*
*/
this.createEvent("clear");
/**
* Fires when the save is pending, due to a request for additional storage
*
* @event error
* @param event.type {String} The event type
*
*/
this.createEvent("pending");
/**
* Fires as the settings dialog displays
*
* @event openingDialog
* @param event.type {String} The event type
*
*/
this.createEvent("openingDialog");
/**
* Fires when a settings dialog is not able to be displayed due to
* the SWF not being large enough to show it. In this case, the developer
* needs to resize the SWF to width of 215px and height of 138px or above,
* or display an external settings page.
*
* @event inadequateDimensions
* @param event.type {String} The event type
*
*/
this.createEvent("inadequateDimensions");
};
YAHOO.extend(YAHOO.util.SWFStore, YAHOO.util.AttributeProvider,
{
/**
* Method to attach listeners to events
* @param type {String} The tyep of event to listen for
* @param listener {String} The function to call
*/
on: function(type, listener)
{
this.embeddedSWF.addListener(type, listener);
},
/**
* Method to attach listeners to events
* @param type {String} The tyep of event to listen for
* @param listener {String} The function to call
*/
addListener: function(type, listener)
{
YAHOO.log("adding '" + type + "' listener");
this.embeddedSWF.addListener(type, listener);
},
/**
* Public accessor to the unique name of the SWFStore instance.
*
* @method toString
* @return {String} Unique name of the SWFStore instance.
*/
toString: function()
{
return "SWFStore " + this._id;
},
/**
* Public accessor to the unique name of the SWFStore instance.
*
* @method getShareData
* @return {Boolean} Whether or not data is being shared among browsers
*/
getShareData: function()
{
return this.embeddedSWF.callSWF("getShareData");
},
/**
* Public accessor to the unique name of the SWFStore instance.
*
* @method setShareData
* @param {Boolean} Whether or not to share among browsers
*/
setShareData: function(value)
{
YAHOO.log("Setting share data to " + value);
this.embeddedSWF.callSWF("setShareData", [value]);
},
/**
* Determines if SWF's visible area is large enough to fit the settings panel
*
* @method hasAdequateDimensions
* @return {Boolean} Whether or not to share among browsers
*/
hasAdequateDimensions: function()
{
YAHOO.log("dimensions adequate? " + this.embeddedSWF.callSWF("hasAdequateDimensions"));
return this.embeddedSWF.callSWF("hasAdequateDimensions");
},
/**
* Public accessor to the unique name of the SWFStore instance.
*
* @method getUseCompression
* @return {Boolean} Whether or compression is being used
*/
getUseCompression: function()
{
return this.embeddedSWF.callSWF("getUseCompression");
},
/**
* Public accessor to the unique name of the SWFStore instance.
*
* @method setUseCompression
* @param {Boolean} Whether or to compress stored data
*/
setUseCompression: function(value)
{
YAHOO.log("Setting compression to " + value);
this.embeddedSWF.callSWF("setUseCompression", [value]);
},
/**
* Saves data to local storage. It returns a String that can
* be one of three values: "true" if the storage succeeded; "false" if the user
* has denied storage on their machine or storage space allotted is not sufficient.
* The size limit for the passed parameters is ~40Kb.
* @method setItem
* @param data {Object} The data to store
* @param location {String} The name of the "cookie" or store
* @return {Boolean} Whether or not the save was successful
*
*/
setItem: function(location,data)
{
if(typeof data == "string")
{
//double encode strings to prevent parsing error
//http://yuilibrary.com/projects/yui2/ticket/2528593
data = data.replace(/\\/g, '\\\\');
}
YAHOO.log("setting " + location + " to " + data);
return this.embeddedSWF.callSWF("setItem", [location, data]);
} ,
/**
* Returns the value of the store at the specified index, if any.
* @method getValueAt
* @param index {Number} The index of the stored item
* @return {Object} The value of the store at that index
*
*/
getValueAt: function(index)
{
YAHOO.log("value at " + index + " is " + this.embeddedSWF.callSWF("getValueAt", [index]) );
return this.embeddedSWF.callSWF("getValueAt", [index]);
},
/**
* Returns the key name in storage, if any, at the specified index.
*
* @param index {Number} The index of the "cookie" or store
* @return {Object}The data
* @method setItem
*
*/
getNameAt: function(index)
{
YAHOO.log("name at " + index + " is " + this.embeddedSWF.callSWF("getNameAt", [index]) );
return this.embeddedSWF.callSWF("getNameAt", [index]);
},
/**
* Returns the value of the item in storage, if any.
* @method getValueOf
* @param location {String} The name of the "cookie" or store
* @return {Object} The data
*
*/
getValueOf: function(location)
{
YAHOO.log("value of " + location + " is " + this.embeddedSWF.callSWF("getValueOf", [location]) );
return this.embeddedSWF.callSWF("getValueOf", [location]);
} ,
/**
* Returns the data type of of the storage.
* May be one of the following types:
*
* - boolean
* - function
* - number
* - object
* - string
* - number
* - xml
*
*
* @method getTypeOf
* @param location {String} The name of the "cookie" or store
* @return {String} The type
*
*/
getTypeOf: function(location)
{
YAHOO.log("type of " + location + " is " + this.embeddedSWF.callSWF("getTypeOf", [location]) );
return this.embeddedSWF.callSWF("getTypeOf", [location]);
} ,
/**
* Returns the data type of of the storage.
* May be one of the following types:
*
* - boolean
* - function
* - number
* - object
* - string
* - number
* - xml
*
*
* @method getTypeAt
* @param location {Number} The index of the "cookie" or store
* @return {String} The type
*
*/
getTypeAt: function(index)
{
YAHOO.log("type at " + index + " is " + this.embeddedSWF.callSWF("getTypeAt", [index]) );
return this.embeddedSWF.callSWF("getTypeAt", [index]);
} ,
/**
* Returns the items in storage as an array.
* @method getItems
* @return {Object} The data.
* @public
*/
getItems: function()
{
return this.embeddedSWF.callSWF("getItems", []);
},
/**
* Removes the item in storage, if any.
* @method removeItem
* @param location {String} The name of the "cookie" or store
*
*/
removeItem: function(location)
{
YAHOO.log("removing " + location);
return this.embeddedSWF.callSWF("removeItem", [location]);
} ,
/**
* Removes the item in storage at the specified index, if any.
* @method removeItem
* @param index {Number} The index of the "cookie" or store
*
*/
removeItemAt: function(index)
{
YAHOO.log("removing item at " + index);
return this.embeddedSWF.callSWF("removeItemAt", [index]);
} ,
/**
* Returns the number of items in storage, if any.
* @method getLength
* @return {Number} The number of items
*
*/
getLength: function()
{
return this.embeddedSWF.callSWF("getLength", []);
} ,
/**
* Removes all data in local storage for this domain.
* Be careful when using this method, as it may
* remove stored information that is used by other applications
* in this domain
* @method clear
*/
clear: function()
{
YAHOO.log("clearing all items");
return this.embeddedSWF.callSWF("clear", []);
} ,
/**
* Gets the current size, in KB, of the amount of space taken by the current store.
* Note that this is calculated, and may take time depending on the number of items stored
* @method calculateCurrentSize
* @return {Number} The size of the store in KB
*/
calculateCurrentSize: function()
{
YAHOO.log("calculating size");
return this.embeddedSWF.callSWF("calculateCurrentSize", []);
} ,
/**
* Gets the timestamp of the last store. This value is automatically set when
* data is stored.
* @method getModificationDate
* @return {Date} A Date object
*/
getModificationDate: function()
{
YAHOO.log("getting date");
return this.embeddedSWF.callSWF("getModificationDate", []);
} ,
/**
* This method requests more storage (if the amount is above 100KB or the current setting).
*
* The request dialog has to be displayed within the Flash player itself
* so the SWF it is called from must be visible and at least 215px x 138px (w x h) in size.
*
* @method setSize
* @param value {Number} The size, in KB
* @return {String}
*/
setSize: function(value)
{
var result = this.embeddedSWF.callSWF("setSize", [value]);
YAHOO.log("attempt to set size to " + value*1024 + " bytes resulted in " + result);
return result;
} ,
/**
* Displays the settings dialog to allow the user to configure
* storage settings manually. If the SWF height and width are smaller than
* what is allowable to display the local settings panel,
* an openExternalDialog message will be sent to JavaScript.
* @method displaySettings
*/
displaySettings: function()
{
YAHOO.log("attempting to show settings. are dimensions adequate? " + this.embeddedSWF.callSWF("hasAdequateDimensions"));
this.embeddedSWF.callSWF("displaySettings", []);
}
});
YAHOO.util.SWFStore.SWFURL = "swfstore.swf";
YAHOO.register("swfstore", YAHOO.util.SWFStore, {version: "2.9.0", build: "2800"});