ds/DsClientSettings.js

goog.provide('spv.ds.DsClientSettings');
goog.provide('spv.ds.DsClientValidatedSettings');


/**
 * @export
 * @constructor
 */
spv.ds.DsClientSettings = function()
{
	/**
	 * @type {?boolean}
	 * @nocollapse
	 */
	this.use_jsonp = null;

	/**
	 * @type {?boolean}
	 * @nocollapse
	 */
	this.use_nova_protocol = null;

	/**
	 * @type {?boolean}
	 * @nocollapse
	 */
	this.debug_print = null;

	/**
	 * A callback to notify whenever the protocol issues an Unauthorized Session
	 * error. The error will pass to the call-specific error callback if this
	 * field is null.
	 * @type {?function( Error )}
	 * @nocollapse
	 */
	this.on_unauthorized_session = null;

	/**
	 * A function that is called if the backend service cannot be reached.
	 * @type {?function( Error )}
	 * @nocollapse
	 */
	this.on_service_unavailable = null;

	/**
	 * A function that is called if the backend service generates unexpected errors.
	 * @type {?function( Error )}
	 * @nocollapse
	 */
	this.on_service_failure = null;

	/**
	 * Session Time To Live in seconds.
	 * Introduced to cleanup test session resources.
	 *
	 * 0 --> use server default.
	 *
	 * @type {number}
	 * @nocollapse
	 */
	 this.session_ttl = 0;

	/**
	 * Origin is used to track the outer client URL, the URL to the
	 * embedding page. The name is admittedly vague but it is the name used
	 * by the server side code.
	 *
	 * @type {?string}
	 * @nocollapse
	 */
	 this.origin = null;

	/**
	 * The initial value of a session's category.
	 *
	 * @type {?string}
	 * @nocollapse
	 */
	 this.initial_category = null;
};



/**
 * Creates new settings by overloading these settings with another set of
 * settings.  Null properties are left untouched, but defined properties are
 * taken from the argument settings.
 *
 * @export
 * @param {!spv.ds.DsClientSettings} other
 * @return {!spv.ds.DsClientSettings}
 */
spv.ds.DsClientSettings.prototype.overloadWith = function( other )
{
	var new_settings = new spv.ds.DsClientSettings();

	new_settings.use_jsonp =
		(other.use_jsonp !== null) ?
		other.use_jsonp : this.use_jsonp;

	new_settings.use_nova_protocol =
		(other.use_nova_protocol !== null) ?
		other.use_nova_protocol : this.use_nova_protocol;

	new_settings.debug_print =
		(other.debug_print !== null) ?
		other.debug_print : this.debug_print;

	new_settings.on_unauthorized_session =
		(other.on_unauthorized_session !== null) ?
		other.on_unauthorized_session : this.on_unauthorized_session;

	new_settings.on_service_unavailable =
		(other.on_service_unavailable !== null) ?
		other.on_service_unavailable : this.on_service_unavailable;

	new_settings.on_service_failure =
		(other.on_service_failure !== null) ?
		other.on_service_failure : this.on_service_failure;

	new_settings.session_ttl = other.session_ttl;

	new_settings.origin =
		(other.origin !== null) ?
		other.origin : this.origin;
	new_settings.origin = other.origin;

	new_settings.initial_category =
		(other.initial_category !== null) ?
		other.initial_category : this.initial_category;

	return new_settings;
};


/**
 * @export
 */
spv.ds.DsClientSettings.prototype.assert_valid = function()
{
	var error_msg = "Invalid DsClientSettings: ";
	if( typeof(this.use_jsonp) != "boolean" )
		throw new Error( error_msg + "use_jsonp not set." );
	if( typeof(this.debug_print) != "boolean" )
		throw new Error( error_msg + "debug_print not set." );
	if( typeof(this.session_ttl) != "number" )
		throw new Error( error_msg + "session_ttl not set." );
};



/**
 * @export
 * @return {!string}
 */
spv.ds.DsClientSettings.prototype.toString = function()
{
	return "DsClientSettings{ use_jsonp : " + this.use_jsonp +
		"; use_nova_protocol : " + this.use_nova_protocol +
		"; debug_print : " + this.debug_print +
		"}";
}



/**
 * Internal type for validation of settings.
 * @constructor
 * @param {spv.ds.DsClientSettings} settings
 */
spv.ds.DsClientValidatedSettings = function( settings )
{
	settings.assert_valid();
	/**
	 * @type {boolean}
	 */
	this.use_jsonp = settings.use_jsonp === true;
	/**
	 * @type {boolean}
	 */
	this.use_nova_protocol = settings.use_nova_protocol === true;

	/**
	 * @type {boolean}
	 */
	this.debug_print = settings.debug_print === true;

	/**
	 * @type {?function(Error)}
	 */
	this.on_unauthorized_session = settings.on_unauthorized_session;

	/**
	 * @type {?function(Error)}
	 */
	this.on_service_unavailable = settings.on_service_unavailable;

	/**
	 * @type {?function(Error)}
	 */
	this.on_service_failure = settings.on_service_failure;

	/**
	 * @type {number}
	 */
	this.session_ttl = settings.session_ttl;

	/**
	 * @type {string}
	 */
	this.origin = !!settings.origin ? settings.origin : "";

	/**
	 * @type {string}
	 */
	this.initial_category = !!settings.initial_category ? settings.initial_category : "";
};