/**
* A window instance represents the life cycle for one single opening of a window
* until its closing.
*
* While OO.ui.WindowManager will reuse OO.ui.Window objects, each time a window is
* opened, a new lifecycle starts.
*
* For more information, please see the [OOjs UI documentation on MediaWiki] [1].
*
* [1]: https://www.mediawiki.org/wiki/OOjs_UI/Windows
*
* @class
*
* @constructor
*/
OO.ui.WindowInstance = function OOuiWindowInstance() {
var deferreds = {
opening: $.Deferred(),
opened: $.Deferred(),
closing: $.Deferred(),
closed: $.Deferred()
};
/**
* @private
* @property {Object}
*/
this.deferreds = deferreds;
// Set these up as chained promises so that rejecting of
// an earlier stage automatically rejects the subsequent
// would-be stages as well.
/**
* @property {jQuery.Promise}
*/
this.opening = deferreds.opening.promise();
/**
* @property {jQuery.Promise}
*/
this.opened = this.opening.then( function () {
return deferreds.opened;
} );
/**
* @property {jQuery.Promise}
*/
this.closing = this.opened.then( function () {
return deferreds.closing;
} );
/**
* @property {jQuery.Promise}
*/
this.closed = this.closing.then( function () {
return deferreds.closed;
} );
};
/* Setup */
OO.initClass( OO.ui.WindowInstance );
/**
* Check if window is opening.
*
* @return {boolean} Window is opening
*/
OO.ui.WindowInstance.prototype.isOpening = function () {
return this.deferreds.opened.state() === 'pending';
};
/**
* Check if window is opened.
*
* @return {boolean} Window is opened
*/
OO.ui.WindowInstance.prototype.isOpened = function () {
return this.deferreds.opened.state() === 'resolved' &&
this.deferreds.closing.state() === 'pending';
};
/**
* Check if window is closing.
*
* @return {boolean} Window is closing
*/
OO.ui.WindowInstance.prototype.isClosing = function () {
return this.deferreds.closing.state() === 'resolved' &&
this.deferreds.closed.state() === 'pending';
};
/**
* Check if window is closed.
*
* @return {boolean} Window is closed
*/
OO.ui.WindowInstance.prototype.isClosed = function () {
return this.deferreds.closed.state() === 'resolved';
};