777 lines
22 KiB
JavaScript
777 lines
22 KiB
JavaScript
window.wp = window.wp || {};
|
|
|
|
(function($){
|
|
var Attachment, Attachments, Query, compare, l10n;
|
|
|
|
/**
|
|
* wp.media( attributes )
|
|
*
|
|
* Handles the default media experience. Automatically creates
|
|
* and opens a media frame, and returns the result.
|
|
* Does nothing if the controllers do not exist.
|
|
*
|
|
* @param {object} attributes The properties passed to the main media controller.
|
|
* @return {object} A media workflow.
|
|
*/
|
|
media = wp.media = function( attributes ) {
|
|
var MediaFrame = media.view.MediaFrame,
|
|
frame;
|
|
|
|
if ( ! MediaFrame )
|
|
return;
|
|
|
|
attributes = _.defaults( attributes || {}, {
|
|
frame: 'select'
|
|
});
|
|
|
|
if ( 'select' === attributes.frame && MediaFrame.Select )
|
|
frame = new MediaFrame.Select( attributes );
|
|
else if ( 'post' === attributes.frame && MediaFrame.Post )
|
|
frame = new MediaFrame.Post( attributes );
|
|
|
|
delete attributes.frame;
|
|
// Set the default state.
|
|
frame.state( frame.options.state );
|
|
// Render, attach, and open the frame.
|
|
return frame.render().attach().open();
|
|
};
|
|
|
|
_.extend( media, { model: {}, view: {}, controller: {} });
|
|
|
|
// Link any localized strings.
|
|
l10n = media.model.l10n = _.isUndefined( _wpMediaModelsL10n ) ? {} : _wpMediaModelsL10n;
|
|
|
|
/**
|
|
* ========================================================================
|
|
* UTILITIES
|
|
* ========================================================================
|
|
*/
|
|
|
|
/**
|
|
* A basic comparator.
|
|
*
|
|
* @param {mixed} a The primary parameter to compare.
|
|
* @param {mixed} b The primary parameter to compare.
|
|
* @param {string} ac The fallback parameter to compare, a's cid.
|
|
* @param {string} bc The fallback parameter to compare, b's cid.
|
|
* @return {number} -1: a should come before b.
|
|
* 0: a and b are of the same rank.
|
|
* 1: b should come before a.
|
|
*/
|
|
compare = function( a, b, ac, bc ) {
|
|
if ( _.isEqual( a, b ) )
|
|
return ac === bc ? 0 : (ac > bc ? -1 : 1);
|
|
else
|
|
return a > b ? -1 : 1;
|
|
};
|
|
|
|
_.extend( media, {
|
|
/**
|
|
* media.template( id )
|
|
*
|
|
* Fetches a template by id.
|
|
*
|
|
* @param {string} id A string that corresponds to a DOM element with an id prefixed with "tmpl-".
|
|
* For example, "attachment" maps to "tmpl-attachment".
|
|
* @return {function} A function that lazily-compiles the template requested.
|
|
*/
|
|
template: _.memoize( function( id ) {
|
|
var compiled,
|
|
options = {
|
|
evaluate: /<#([\s\S]+?)#>/g,
|
|
interpolate: /\{\{\{([\s\S]+?)\}\}\}/g,
|
|
escape: /\{\{([^\}]+?)\}\}(?!\})/g,
|
|
variable: 'data'
|
|
};
|
|
|
|
return function( data ) {
|
|
compiled = compiled || _.template( $( '#tmpl-' + id ).html(), null, options );
|
|
return compiled( data );
|
|
};
|
|
}),
|
|
|
|
/**
|
|
* media.post( [action], [data] )
|
|
*
|
|
* Sends a POST request to WordPress.
|
|
*
|
|
* @param {string} action The slug of the action to fire in WordPress.
|
|
* @param {object} data The data to populate $_POST with.
|
|
* @return {$.promise} A jQuery promise that represents the request.
|
|
*/
|
|
post: function( action, data ) {
|
|
return media.ajax({
|
|
data: _.isObject( action ) ? action : _.extend( data || {}, { action: action })
|
|
});
|
|
},
|
|
|
|
/**
|
|
* media.ajax( [action], [options] )
|
|
*
|
|
* Sends a POST request to WordPress.
|
|
*
|
|
* @param {string} action The slug of the action to fire in WordPress.
|
|
* @param {object} options The options passed to jQuery.ajax.
|
|
* @return {$.promise} A jQuery promise that represents the request.
|
|
*/
|
|
ajax: function( action, options ) {
|
|
if ( _.isObject( action ) ) {
|
|
options = action;
|
|
} else {
|
|
options = options || {};
|
|
options.data = _.extend( options.data || {}, { action: action });
|
|
}
|
|
|
|
options = _.defaults( options || {}, {
|
|
type: 'POST',
|
|
url: ajaxurl,
|
|
context: this
|
|
});
|
|
|
|
return $.Deferred( function( deferred ) {
|
|
// Transfer success/error callbacks.
|
|
if ( options.success )
|
|
deferred.done( options.success );
|
|
if ( options.error )
|
|
deferred.fail( options.error );
|
|
|
|
delete options.success;
|
|
delete options.error;
|
|
|
|
// Use with PHP's wp_send_json_success() and wp_send_json_error()
|
|
$.ajax( options ).done( function( response ) {
|
|
if ( _.isObject( response ) && ! _.isUndefined( response.success ) )
|
|
deferred[ response.success ? 'resolveWith' : 'rejectWith' ]( this, [response.data] );
|
|
else
|
|
deferred.rejectWith( this, [response] );
|
|
}).fail( function() {
|
|
deferred.rejectWith( this, arguments );
|
|
});
|
|
}).promise();
|
|
},
|
|
|
|
// Scales a set of dimensions to fit within bounding dimensions.
|
|
fit: function( dimensions ) {
|
|
var width = dimensions.width,
|
|
height = dimensions.height,
|
|
maxWidth = dimensions.maxWidth,
|
|
maxHeight = dimensions.maxHeight,
|
|
constraint;
|
|
|
|
// Compare ratios between the two values to determine which
|
|
// max to constrain by. If a max value doesn't exist, then the
|
|
// opposite side is the constraint.
|
|
if ( ! _.isUndefined( maxWidth ) && ! _.isUndefined( maxHeight ) ) {
|
|
constraint = ( width / height > maxWidth / maxHeight ) ? 'width' : 'height';
|
|
} else if ( _.isUndefined( maxHeight ) ) {
|
|
constraint = 'width';
|
|
} else if ( _.isUndefined( maxWidth ) && height > maxHeight ) {
|
|
constraint = 'height';
|
|
}
|
|
|
|
// If the value of the constrained side is larger than the max,
|
|
// then scale the values. Otherwise return the originals; they fit.
|
|
if ( 'width' === constraint && width > maxWidth ) {
|
|
return {
|
|
width : maxWidth,
|
|
height: Math.round( maxWidth * height / width )
|
|
};
|
|
} else if ( 'height' === constraint && height > maxHeight ) {
|
|
return {
|
|
width : Math.round( maxHeight * width / height ),
|
|
height: maxHeight
|
|
};
|
|
} else {
|
|
return {
|
|
width : width,
|
|
height: height
|
|
};
|
|
}
|
|
}
|
|
});
|
|
|
|
|
|
/**
|
|
* ========================================================================
|
|
* MODELS
|
|
* ========================================================================
|
|
*/
|
|
|
|
/**
|
|
* wp.media.model.Attachment
|
|
*/
|
|
Attachment = media.model.Attachment = Backbone.Model.extend({
|
|
sync: function( method, model, options ) {
|
|
// Overload the `read` request so Attachment.fetch() functions correctly.
|
|
if ( 'read' === method ) {
|
|
options = options || {};
|
|
options.context = this;
|
|
options.data = _.extend( options.data || {}, {
|
|
action: 'get-attachment',
|
|
id: this.id
|
|
});
|
|
return media.ajax( options );
|
|
|
|
// Overload the `update` request so properties can be saved.
|
|
} else if ( 'update' === method ) {
|
|
options = options || {};
|
|
options.context = this;
|
|
|
|
// Set the action and ID.
|
|
options.data = _.extend( options.data || {}, {
|
|
action: 'save-attachment',
|
|
id: this.id,
|
|
nonce: l10n.saveAttachmentNonce
|
|
});
|
|
|
|
// Record the values of the changed attributes.
|
|
if ( options.changes ) {
|
|
_.each( options.changes, function( value, key ) {
|
|
options.changes[ key ] = this.get( key );
|
|
}, this );
|
|
|
|
options.data.changes = options.changes;
|
|
delete options.changes;
|
|
}
|
|
|
|
return media.ajax( options );
|
|
}
|
|
},
|
|
|
|
parse: function( resp, xhr ) {
|
|
if ( ! resp )
|
|
return resp;
|
|
|
|
// Convert date strings into Date objects.
|
|
resp.date = new Date( resp.date );
|
|
resp.modified = new Date( resp.modified );
|
|
return resp;
|
|
},
|
|
|
|
saveCompat: function( data, options ) {
|
|
var model = this;
|
|
|
|
return media.post( 'save-attachment-compat', _.defaults({
|
|
id: this.id,
|
|
nonce: l10n.saveAttachmentNonce
|
|
}, data ) ).done( function( resp, status, xhr ) {
|
|
model.set( model.parse( resp, xhr ), options );
|
|
});
|
|
}
|
|
}, {
|
|
create: function( attrs ) {
|
|
return Attachments.all.push( attrs );
|
|
},
|
|
|
|
get: _.memoize( function( id, attachment ) {
|
|
return Attachments.all.push( attachment || { id: id } );
|
|
})
|
|
});
|
|
|
|
/**
|
|
* wp.media.model.Attachments
|
|
*/
|
|
Attachments = media.model.Attachments = Backbone.Collection.extend({
|
|
model: Attachment,
|
|
|
|
initialize: function( models, options ) {
|
|
options = options || {};
|
|
|
|
this.props = new Backbone.Model();
|
|
this.filters = options.filters || {};
|
|
|
|
// Bind default `change` events to the `props` model.
|
|
this.props.on( 'change:order', this._changeOrder, this );
|
|
this.props.on( 'change:orderby', this._changeOrderby, this );
|
|
this.props.on( 'change:query', this._changeQuery, this );
|
|
this.props.on( 'change:search', this._changeSearch, this );
|
|
this.props.on( 'change:type', this._changeType, this );
|
|
|
|
// Set the `props` model and fill the default property values.
|
|
this.props.set( _.defaults( options.props || {} ) );
|
|
|
|
// Observe another `Attachments` collection if one is provided.
|
|
if ( options.observe )
|
|
this.observe( options.observe );
|
|
},
|
|
|
|
// Automatically sort the collection when the order changes.
|
|
_changeOrder: function( model, order ) {
|
|
if ( this.comparator )
|
|
this.sort();
|
|
},
|
|
|
|
// Set the default comparator only when the `orderby` property is set.
|
|
_changeOrderby: function( model, orderby ) {
|
|
// If a different comparator is defined, bail.
|
|
if ( this.comparator && this.comparator !== Attachments.comparator )
|
|
return;
|
|
|
|
if ( orderby && 'post__in' !== orderby )
|
|
this.comparator = Attachments.comparator;
|
|
else
|
|
delete this.comparator;
|
|
},
|
|
|
|
// If the `query` property is set to true, query the server using
|
|
// the `props` values, and sync the results to this collection.
|
|
_changeQuery: function( model, query ) {
|
|
if ( query ) {
|
|
this.props.on( 'change', this._requery, this );
|
|
this._requery();
|
|
} else {
|
|
this.props.off( 'change', this._requery, this );
|
|
}
|
|
},
|
|
|
|
_changeFilteredProp: function( prop, model, term ) {
|
|
// Bail if we're currently searching for the same term.
|
|
if ( this.props.get( prop ) === term )
|
|
return;
|
|
|
|
if ( term && ! this.filters[ prop ] )
|
|
this.filters[ prop ] = Attachments.filters[ prop ];
|
|
else if ( ! term && this.filters[ prop ] === Attachments.filters[ prop ] )
|
|
delete this.filters[ prop ];
|
|
|
|
// If no `Attachments` model is provided to source the searches
|
|
// from, then automatically generate a source from the existing
|
|
// models.
|
|
if ( ! this.props.get('source') )
|
|
this.props.set( 'source', new Attachments( this.models ) );
|
|
|
|
this.reset( this.props.get('source').filter( this.validator ) );
|
|
},
|
|
|
|
_changeSearch: function( model, term ) {
|
|
return this._changeFilteredProp( 'search', model, term );
|
|
},
|
|
|
|
_changeType: function( model, term ) {
|
|
return this._changeFilteredProp( 'type', model, term );
|
|
},
|
|
|
|
validator: function( attachment ) {
|
|
return _.all( this.filters, function( filter, key ) {
|
|
return !! filter.call( this, attachment );
|
|
}, this );
|
|
},
|
|
|
|
validate: function( attachment, options ) {
|
|
var valid = this.validator( attachment ),
|
|
hasAttachment = !! this.getByCid( attachment.cid );
|
|
|
|
// Only retain the `silent` option.
|
|
options = {
|
|
silent: options && options.silent
|
|
};
|
|
|
|
if ( ! valid && hasAttachment )
|
|
this.remove( attachment, options );
|
|
else if ( valid && ! hasAttachment )
|
|
this.add( attachment, options );
|
|
|
|
return this;
|
|
},
|
|
|
|
validateAll: function( attachments ) {
|
|
_.each( attachments.models, function( attachment ) {
|
|
this.validate( attachment, { silent: true });
|
|
}, this );
|
|
|
|
return this;
|
|
},
|
|
|
|
observe: function( attachments ) {
|
|
this.observers = this.observers || [];
|
|
this.observers.push( attachments );
|
|
|
|
attachments.on( 'add change remove', this._validateHandler, this );
|
|
attachments.on( 'reset', this._validateAllHandler, this );
|
|
|
|
this.validateAll( attachments );
|
|
return this;
|
|
},
|
|
|
|
unobserve: function( attachments ) {
|
|
if ( attachments ) {
|
|
attachments.off( null, null, this );
|
|
this.observers = _.without( this.observers, attachments );
|
|
|
|
} else {
|
|
_.each( this.observers, function( attachments ) {
|
|
attachments.off( null, null, this );
|
|
}, this );
|
|
delete this.observers;
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
_validateHandler: function( attachment, attachments, options ) {
|
|
return this.validate( attachment, options );
|
|
},
|
|
|
|
_validateAllHandler: function( attachments, options ) {
|
|
return this.validateAll( attachments, options );
|
|
},
|
|
|
|
mirror: function( attachments ) {
|
|
if ( this.mirroring && this.mirroring === attachments )
|
|
return;
|
|
|
|
this.unmirror();
|
|
this.mirroring = attachments;
|
|
this.reset( attachments.models );
|
|
attachments.on( 'add', this._mirrorAdd, this );
|
|
attachments.on( 'remove', this._mirrorRemove, this );
|
|
attachments.on( 'reset', this._mirrorReset, this );
|
|
},
|
|
|
|
unmirror: function() {
|
|
if ( ! this.mirroring )
|
|
return;
|
|
|
|
this.mirroring.off( 'add', this._mirrorAdd, this );
|
|
this.mirroring.off( 'remove', this._mirrorRemove, this );
|
|
this.mirroring.off( 'reset', this._mirrorReset, this );
|
|
delete this.mirroring;
|
|
},
|
|
|
|
_mirrorAdd: function( attachment, attachments, options ) {
|
|
this.add( attachment, { at: options.index });
|
|
},
|
|
|
|
_mirrorRemove: function( attachment ) {
|
|
this.remove( attachment );
|
|
},
|
|
|
|
_mirrorReset: function( attachments ) {
|
|
this.reset( attachments.models );
|
|
},
|
|
|
|
more: function( options ) {
|
|
if ( this.mirroring && this.mirroring.more )
|
|
return this.mirroring.more( options );
|
|
return $.Deferred().resolve().promise();
|
|
},
|
|
|
|
parse: function( resp, xhr ) {
|
|
return _.map( resp, function( attrs ) {
|
|
var attachment = Attachment.get( attrs.id );
|
|
return attachment.set( attachment.parse( attrs, xhr ) );
|
|
});
|
|
},
|
|
|
|
_requery: function() {
|
|
if ( this.props.get('query') )
|
|
this.mirror( Query.get( this.props.toJSON() ) );
|
|
}
|
|
}, {
|
|
comparator: function( a, b ) {
|
|
var key = this.props.get('orderby'),
|
|
order = this.props.get('order') || 'DESC',
|
|
ac = a.cid,
|
|
bc = b.cid;
|
|
|
|
a = a.get( key );
|
|
b = b.get( key );
|
|
|
|
if ( 'date' === key || 'modified' === key ) {
|
|
a = a || new Date();
|
|
b = b || new Date();
|
|
}
|
|
|
|
return ( 'DESC' === order ) ? compare( a, b, ac, bc ) : compare( b, a, bc, ac );
|
|
},
|
|
|
|
filters: {
|
|
// Note that this client-side searching is *not* equivalent
|
|
// to our server-side searching.
|
|
search: function( attachment ) {
|
|
if ( ! this.props.get('search') )
|
|
return true;
|
|
|
|
return _.any(['title','filename','description','caption','name'], function( key ) {
|
|
var value = attachment.get( key );
|
|
return value && -1 !== value.search( this.props.get('search') );
|
|
}, this );
|
|
},
|
|
|
|
type: function( attachment ) {
|
|
var type = this.props.get('type');
|
|
if ( ! type )
|
|
return true;
|
|
|
|
return -1 !== type.indexOf( attachment.get('type') );
|
|
}
|
|
}
|
|
});
|
|
|
|
Attachments.all = new Attachments();
|
|
|
|
/**
|
|
* wp.media.query
|
|
*/
|
|
media.query = function( props ) {
|
|
return new Attachments( null, {
|
|
props: _.extend( _.defaults( props || {}, { orderby: 'date' } ), { query: true } )
|
|
});
|
|
};
|
|
|
|
/**
|
|
* wp.media.model.Query
|
|
*
|
|
* A set of attachments that corresponds to a set of consecutively paged
|
|
* queries on the server.
|
|
*
|
|
* Note: Do NOT change this.args after the query has been initialized.
|
|
* Things will break.
|
|
*/
|
|
Query = media.model.Query = Attachments.extend({
|
|
initialize: function( models, options ) {
|
|
var allowed;
|
|
|
|
options = options || {};
|
|
Attachments.prototype.initialize.apply( this, arguments );
|
|
|
|
this.args = options.args;
|
|
this.hasMore = true;
|
|
this.created = new Date();
|
|
|
|
this.filters.order = function( attachment ) {
|
|
if ( ! this.comparator )
|
|
return true;
|
|
|
|
// We want any items that can be placed before the last
|
|
// item in the set. If we add any items after the last
|
|
// item, then we can't guarantee the set is complete.
|
|
if ( this.length ) {
|
|
return 1 !== this.comparator( attachment, this.last() );
|
|
|
|
// Handle the case where there are no items yet and
|
|
// we're sorting for recent items. In that case, we want
|
|
// changes that occurred after we created the query.
|
|
} else if ( 'DESC' === this.args.order && ( 'date' === this.args.orderby || 'modified' === this.args.orderby ) ) {
|
|
return attachment.get( this.args.orderby ) >= this.created;
|
|
}
|
|
|
|
// Otherwise, we don't want any items yet.
|
|
return false;
|
|
};
|
|
|
|
// Observe the central `wp.Uploader.queue` collection to watch for
|
|
// new matches for the query.
|
|
//
|
|
// Only observe when a limited number of query args are set. There
|
|
// are no filters for other properties, so observing will result in
|
|
// false positives in those queries.
|
|
allowed = [ 's', 'order', 'orderby', 'posts_per_page', 'post_mime_type' ];
|
|
if ( wp.Uploader && _( this.args ).chain().keys().difference( allowed ).isEmpty().value() )
|
|
this.observe( wp.Uploader.queue );
|
|
},
|
|
|
|
more: function( options ) {
|
|
var query = this;
|
|
|
|
if ( this._more && 'pending' === this._more.state() )
|
|
return this._more;
|
|
|
|
if ( ! this.hasMore )
|
|
return $.Deferred().resolve().promise();
|
|
|
|
options = options || {};
|
|
options.add = true;
|
|
|
|
return this._more = this.fetch( options ).done( function( resp ) {
|
|
if ( _.isEmpty( resp ) || -1 === this.args.posts_per_page || resp.length < this.args.posts_per_page )
|
|
query.hasMore = false;
|
|
});
|
|
},
|
|
|
|
sync: function( method, model, options ) {
|
|
var fallback;
|
|
|
|
// Overload the read method so Attachment.fetch() functions correctly.
|
|
if ( 'read' === method ) {
|
|
options = options || {};
|
|
options.context = this;
|
|
options.data = _.extend( options.data || {}, {
|
|
action: 'query-attachments'
|
|
});
|
|
|
|
// Clone the args so manipulation is non-destructive.
|
|
args = _.clone( this.args );
|
|
|
|
// Determine which page to query.
|
|
if ( -1 !== args.posts_per_page )
|
|
args.paged = Math.floor( this.length / args.posts_per_page ) + 1;
|
|
|
|
options.data.query = args;
|
|
return media.ajax( options );
|
|
|
|
// Otherwise, fall back to Backbone.sync()
|
|
} else {
|
|
fallback = Attachments.prototype.sync ? Attachments.prototype : Backbone;
|
|
return fallback.sync.apply( this, arguments );
|
|
}
|
|
}
|
|
}, {
|
|
defaultProps: {
|
|
orderby: 'date',
|
|
order: 'DESC'
|
|
},
|
|
|
|
defaultArgs: {
|
|
posts_per_page: 40
|
|
},
|
|
|
|
orderby: {
|
|
allowed: [ 'name', 'author', 'date', 'title', 'modified', 'uploadedTo', 'id', 'post__in' ],
|
|
valuemap: {
|
|
'id': 'ID',
|
|
'uploadedTo': 'parent'
|
|
}
|
|
},
|
|
|
|
propmap: {
|
|
'search': 's',
|
|
'type': 'post_mime_type',
|
|
'parent': 'post_parent',
|
|
'perPage': 'posts_per_page'
|
|
},
|
|
|
|
// Caches query objects so queries can be easily reused.
|
|
get: (function(){
|
|
var queries = [];
|
|
|
|
return function( props, options ) {
|
|
var args = {},
|
|
orderby = Query.orderby,
|
|
defaults = Query.defaultProps,
|
|
query;
|
|
|
|
// Remove the `query` property. This isn't linked to a query,
|
|
// this *is* the query.
|
|
delete props.query;
|
|
|
|
// Fill default args.
|
|
_.defaults( props, defaults );
|
|
|
|
// Normalize the order.
|
|
props.order = props.order.toUpperCase();
|
|
if ( 'DESC' !== props.order && 'ASC' !== props.order )
|
|
props.order = defaults.order.toUpperCase();
|
|
|
|
// Ensure we have a valid orderby value.
|
|
if ( ! _.contains( orderby.allowed, props.orderby ) )
|
|
props.orderby = defaults.orderby;
|
|
|
|
// Generate the query `args` object.
|
|
// Correct any differing property names.
|
|
_.each( props, function( value, prop ) {
|
|
args[ Query.propmap[ prop ] || prop ] = value;
|
|
});
|
|
|
|
// Fill any other default query args.
|
|
_.defaults( args, Query.defaultArgs );
|
|
|
|
// `props.orderby` does not always map directly to `args.orderby`.
|
|
// Substitute exceptions specified in orderby.keymap.
|
|
args.orderby = orderby.valuemap[ props.orderby ] || props.orderby;
|
|
|
|
// Search the query cache for matches.
|
|
query = _.find( queries, function( query ) {
|
|
return _.isEqual( query.args, args );
|
|
});
|
|
|
|
// Otherwise, create a new query and add it to the cache.
|
|
if ( ! query ) {
|
|
query = new Query( [], _.extend( options || {}, {
|
|
props: props,
|
|
args: args
|
|
} ) );
|
|
queries.push( query );
|
|
}
|
|
|
|
return query;
|
|
};
|
|
}())
|
|
});
|
|
|
|
/**
|
|
* wp.media.model.Selection
|
|
*
|
|
* Used to manage a selection of attachments in the views.
|
|
*/
|
|
media.model.Selection = Attachments.extend({
|
|
initialize: function( models, options ) {
|
|
Attachments.prototype.initialize.apply( this, arguments );
|
|
this.multiple = options && options.multiple;
|
|
|
|
// Refresh the `single` model whenever the selection changes.
|
|
// Binds `single` instead of using the context argument to ensure
|
|
// it receives no parameters.
|
|
this.on( 'add remove reset', _.bind( this.single, this ) );
|
|
},
|
|
|
|
// Override the selection's add method.
|
|
// If the workflow does not support multiple
|
|
// selected attachments, reset the selection.
|
|
add: function( models, options ) {
|
|
if ( ! this.multiple ) {
|
|
models = _.isArray( models ) && models.length ? _.first( models ) : models;
|
|
this.clear( options );
|
|
}
|
|
|
|
return Attachments.prototype.add.call( this, models, options );
|
|
},
|
|
|
|
// Removes all models from the selection.
|
|
clear: function( options ) {
|
|
this.remove( this.models, options ).single();
|
|
return this;
|
|
},
|
|
|
|
// Override the selection's reset method.
|
|
// Always direct items through add and remove,
|
|
// as we need them to fire.
|
|
reset: function( models, options ) {
|
|
this.clear( options ).add( models, options ).single();
|
|
return this;
|
|
},
|
|
|
|
// Create selection.has, which determines if a model
|
|
// exists in the collection based on cid and id,
|
|
// instead of direct comparison.
|
|
has: function( attachment ) {
|
|
return !! ( this.getByCid( attachment.cid ) || this.get( attachment.id ) );
|
|
},
|
|
|
|
single: function( model ) {
|
|
var previous = this._single;
|
|
|
|
// If a `model` is provided, use it as the single model.
|
|
if ( model )
|
|
this._single = model;
|
|
|
|
// If the single model isn't in the selection, remove it.
|
|
if ( this._single && ! this.has( this._single ) )
|
|
delete this._single;
|
|
|
|
this._single = this._single || this.last();
|
|
|
|
// If single has changed, fire an event.
|
|
if ( this._single !== previous ) {
|
|
if ( this._single )
|
|
this._single.trigger( 'selection:single', this._single, this );
|
|
if ( previous )
|
|
previous.trigger( 'selection:unsingle', previous, this );
|
|
}
|
|
|
|
// Return the single model, or the last model as a fallback.
|
|
return this._single;
|
|
}
|
|
});
|
|
|
|
}(jQuery)); |