/**
 * Creates an homogenous object for tracking events so users can know what to expect.
 *
 * @class
 * @namespace PIXI
 * @param target {object} The target object that the event is called on
 * @param name {string} The string name of the event that was triggered
 * @param data {object} Arbitrary event data to pass along
 */
function EventData(target, name, data) {
    // for duck typing in the ".on()" function
    this.__isEventObject = true;

    /**
     * Tracks the state of bubbling propagation. Do not
     * set this directly, instead use `event.stopPropagation()`
     *
     * @member {boolean}
     * @private
     * @readonly
     */
    this.stopped = false;

    /**
     * Tracks the state of sibling listener propagation. Do not
     * set this directly, instead use `event.stopImmediatePropagation()`
     *
     * @member {boolean}
     * @private
     * @readonly
     */
    this.stoppedImmediate = false;

    /**
     * The original target the event triggered on.
     *
     * @member {object}
     * @readonly
     */
    this.target = target;

    /**
     * The string name of the event that this represents.
     *
     * @member {string}
     * @readonly
     */
    this.type = name;

    /**
     * The data that was passed in with this event.
     *
     * @member {object}
     * @readonly
     */
    this.data = data;

    /**
     * The timestamp when the event occurred.
     *
     * @member {number}
     * @readonly
     */
    this.timeStamp = Date.now();
}

/**
 * Stops the propagation of events up the scene graph (prevents bubbling).
 *
 */
EventData.prototype.stopPropagation = function stopPropagation() {
    this.stopped = true;
};

/**
 * Stops the propagation of events to sibling listeners (no longer calls any listeners).
 *
 */
EventData.prototype.stopImmediatePropagation = function stopImmediatePropagation() {
    this.stoppedImmediate = true;
};