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/**
* @output wp-includes/js/wp-backbone.js
*/
/** @namespace wp */
window.wp = window.wp || {};
(function ($) {
/**
* Create the WordPress Backbone namespace.
*
* @namespace wp.Backbone
*/
wp.Backbone = {};
/**
* A backbone subview manager.
*
* @since 3.5.0
* @since 3.6.0 Moved wp.media.Views to wp.Backbone.Subviews.
*
* @memberOf wp.Backbone
*
* @class
*
* @param {wp.Backbone.View} view The main view.
* @param {Array|Object} views The subviews for the main view.
*/
wp.Backbone.Subviews = function( view, views ) {
this.view = view;
this._views = _.isArray( views ) ? { '': views } : views || {};
};
wp.Backbone.Subviews.extend = Backbone.Model.extend;
_.extend( wp.Backbone.Subviews.prototype, {
/**
* Fetches all of the subviews.
*
* @since 3.5.0
*
* @return {Array} All the subviews.
*/
all: function() {
return _.flatten( _.values( this._views ) );
},
/**
* Fetches all subviews that match a given `selector`.
*
* If no `selector` is provided, it will grab all subviews attached
* to the view's root.
*
* @since 3.5.0
*
* @param {string} selector A jQuery selector.
*
* @return {Array} All the subviews that match the selector.
*/
get: function( selector ) {
selector = selector || '';
return this._views[ selector ];
},
/**
* Fetches the first subview that matches a given `selector`.
*
* If no `selector` is provided, it will grab the first subview attached to the
* view's root.
*
* Useful when a selector only has one subview at a time.
*
* @since 3.5.0
*
* @param {string} selector A jQuery selector.
*
* @return {Backbone.View} The view.
*/
first: function( selector ) {
var views = this.get( selector );
return views && views.length ? views[0] : null;
},
/**
* Registers subview(s).
*
* Registers any number of `views` to a `selector`.
*
* When no `selector` is provided, the root selector (the empty string)
* is used. `views` accepts a `Backbone.View` instance or an array of
* `Backbone.View` instances.
*
* ---
*
* Accepts an `options` object, which has a significant effect on the
* resulting behavior.
*
* `options.silent` - *boolean, `false`*
* If `options.silent` is true, no DOM modifications will be made.
*
* `options.add` - *boolean, `false`*
* Use `Views.add()` as a shortcut for setting `options.add` to true.
*
* By default, the provided `views` will replace any existing views
* associated with the selector. If `options.add` is true, the provided
* `views` will be added to the existing views.
*
* `options.at` - *integer, `undefined`*
* When adding, to insert `views` at a specific index, use `options.at`.
* By default, `views` are added to the end of the array.
*
* @since 3.5.0
*
* @param {string} selector A jQuery selector.
* @param {Array|Object} views The subviews for the main view.
* @param {Object} options Options for call. If `options.silent` is true,
* no DOM modifications will be made. Use
* `Views.add()` as a shortcut for setting
* `options.add` to true. If `options.add` is
* true, the provided `views` will be added to
* the existing views. When adding, to insert
* `views` at a specific index, use `options.at`.
*
* @return {wp.Backbone.Subviews} The current Subviews instance.
*/
set: function( selector, views, options ) {
var existing, next;
if ( ! _.isString( selector ) ) {
options = views;
views = selector;
selector = '';
}
options = options || {};
views = _.isArray( views ) ? views : [ views ];
existing = this.get( selector );
next = views;
if ( existing ) {
if ( options.add ) {
if ( _.isUndefined( options.at ) ) {
next = existing.concat( views );
} else {
next = existing;
next.splice.apply( next, [ options.at, 0 ].concat( views ) );
}
} else {
_.each( next, function( view ) {
view.__detach = true;
});
_.each( existing, function( view ) {
if ( view.__detach )
view.$el.detach();
else
view.remove();
});
_.each( next, function( view ) {
delete view.__detach;
});
}
}
this._views[ selector ] = next;
_.each( views, function( subview ) {
var constructor = subview.Views || wp.Backbone.Subviews,
subviews = subview.views = subview.views || new constructor( subview );
subviews.parent = this.view;
subviews.selector = selector;
}, this );
if ( ! options.silent )
this._attach( selector, views, _.extend({ ready: this._isReady() }, options ) );
return this;
},
/**
* Add subview(s) to existing subviews.
*
* An alias to `Views.set()`, which defaults `options.add` to true.
*
* Adds any number of `views` to a `selector`.
*
* When no `selector` is provided, the root selector (the empty string)
* is used. `views` accepts a `Backbone.View` instance or an array of
* `Backbone.View` instances.
*
* Uses `Views.set()` when setting `options.add` to `false`.
*
* Accepts an `options` object. By default, provided `views` will be
* inserted at the end of the array of existing views. To insert
* `views` at a specific index, use `options.at`. If `options.silent`
* is true, no DOM modifications will be made.
*
* For more information on the `options` object, see `Views.set()`.
*
* @since 3.5.0
*
* @param {string} selector A jQuery selector.
* @param {Array|Object} views The subviews for the main view.
* @param {Object} options Options for call. To insert `views` at a
* specific index, use `options.at`. If
* `options.silent` is true, no DOM modifications
* will be made.
*
* @return {wp.Backbone.Subviews} The current subviews instance.
*/
add: function( selector, views, options ) {
if ( ! _.isString( selector ) ) {
options = views;
views = selector;
selector = '';
}
return this.set( selector, views, _.extend({ add: true }, options ) );
},
/**
* Removes an added subview.
*
* Stops tracking `views` registered to a `selector`. If no `views` are
* set, then all of the `selector`'s subviews will be unregistered and
* removed.
*
* Accepts an `options` object. If `options.silent` is set, `remove`
* will *not* be triggered on the unregistered views.
*
* @since 3.5.0
*
* @param {string} selector A jQuery selector.
* @param {Array|Object} views The subviews for the main view.
* @param {Object} options Options for call. If `options.silent` is set,
* `remove` will *not* be triggered on the
* unregistered views.
*
* @return {wp.Backbone.Subviews} The current Subviews instance.
*/
unset: function( selector, views, options ) {
var existing;
if ( ! _.isString( selector ) ) {
options = views;
views = selector;
selector = '';
}
views = views || [];
if ( existing = this.get( selector ) ) {
views = _.isArray( views ) ? views : [ views ];
this._views[ selector ] = views.length ? _.difference( existing, views ) : [];
}
if ( ! options || ! options.silent )
_.invoke( views, 'remove' );
return this;
},
/**
* Detaches all subviews.
*
* Helps to preserve all subview events when re-rendering the master
* view. Used in conjunction with `Views.render()`.
*
* @since 3.5.0
*
* @return {wp.Backbone.Subviews} The current Subviews instance.
*/
detach: function() {
$( _.pluck( this.all(), 'el' ) ).detach();
return this;
},
/**
* Renders all subviews.
*
* Used in conjunction with `Views.detach()`.
*
* @since 3.5.0
*