File: /home/niphet/public_html/VisualMaking.com/wp-includes/js/media-models.js
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(function($){
var Attachment, Attachments, Query, compare, l10n, media;
/**
* 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;
return frame;
};
_.extend( media, { model: {}, view: {}, controller: {}, frames: {} });
// Link any localized strings.
l10n = media.model.l10n = typeof _wpMediaModelsL10n === 'undefined' ? {} : _wpMediaModelsL10n;
// Link any settings.
media.model.settings = l10n.settings || {};
delete l10n.settings;
/**
* ========================================================================
* 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: media.model.settings.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 ) {
// Treat a response of `1` as successful for backwards
// compatibility with existing handlers.
if ( response === '1' || response === 1 )
response = { success: true };
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
};
}
},
// Truncates a string by injecting an ellipsis into the middle.
// Useful for filenames.
truncate: function( string, length, replacement ) {
length = length || 30;
replacement = replacement || '…';
if ( string.length <= length )
return string;
return string.substr( 0, length / 2 ) + replacement + string.substr( -1 * length / 2 );
}
});
/**
* ========================================================================
* MODELS
* ========================================================================
*/
/**
* wp.media.attachment
*/
media.attachment = function( id ) {
return Attachment.get( id );
};
/**
* wp.media.model.Attachment
*/
Attachment = media.model.Attachment = Backbone.Model.extend({
sync: function( method, model, options ) {
// If the attachment does not yet have an `id`, return an instantly
// rejected promise. Otherwise, all of our requests will fail.
if ( _.isUndefined( this.id ) )
return $.Deferred().rejectWith( this ).promise();
// 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 ) {
// If we do not have the necessary nonce, fail immeditately.
if ( ! this.get('nonces') || ! this.get('nonces').update )
return $.Deferred().rejectWith( this ).promise();
options = options || {};
options.context = this;
// Set the action and ID.
options.data = _.extend( options.data || {}, {
action: 'save-attachment',
id: this.id,
nonce: this.get('nonces').update,
post_id: media.model.settings.post.id
});
// 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 );
// Overload the `delete` request so attachments can be removed.
// This will permanently delete an attachment.
} else if ( 'delete' === method ) {
options = options || {};
if ( ! options.wait )
this.destroyed = true;
options.context = this;
options.data = _.extend( options.data || {}, {
action: 'delete-post',
id: this.id,
_wpnonce: this.get('nonces')['delete']
});
return media.ajax( options ).done( function() {
this.destroyed = true;
}).fail( function() {
this.destroyed = false;
});
}
},
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;
// If we do not have the necessary nonce, fail immeditately.
if ( ! this.get('nonces') || ! this.get('nonces').update )
return $.Deferred().rejectWith( this ).promise();
return media.post( 'save-attachment-compat', _.defaults({
id: this.id,
nonce: this.get('nonces').update,
post_id: media.model.settings.post.id
}, 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', this._changeFilteredProps, this );
this.props.on( 'change:order', this._changeOrder, this );
this.props.on( 'change:orderby', this._changeOrderby, this );
this.props.on( 'change:query', this._changeQuery, 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 );
}
},
_changeFilteredProps: function( model, options ) {
// If this is a query, updating the collection will be handled by
// `this._requery()`.
if ( this.props.get('query') )
return;
var changed = _.chain( options.changes ).map( function( t, prop ) {
var filter = Attachments.filters[ prop ],
term = model.get( prop );
if ( ! filter )
return;
if ( term && ! this.filters[ prop ] )
this.filters[ prop ] = filter;
else if ( ! term && this.filters[ prop ] === filter )
delete this.filters[ prop ];
else
return;
// Record the change.
return true;
}, this ).any().value();
if ( ! changed )
return;
// If no `Attachments` model is provided to source the searches
// from, then automatically generate a source from the existing
// models.
if ( ! this._source )
this._source = new Attachments( this.models );
this.reset( this._source.filter( this.validator, this ) );
},
validateDestroyed: false,
validator: function( attachment ) {
if ( ! this.validateDestroyed && attachment.destroyed )
return false;
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 );
if ( ! valid && hasAttachment )
this.remove( attachment, options );
else if ( valid && ! hasAttachment )
this.add( attachment, options );
return this;
},
validateAll: function( attachments, options ) {
options = options || {};
_.each( attachments.models, function( attachment ) {
this.validate( attachment, { silent: true });
}, this );
if ( ! options.silent )
this.trigger( 'reset', this, options );
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 ) {
// If we're not mirroring this `attachments` collection,
// only retain the `silent` option.
options = attachments === this.mirroring ? options : {
silent: options && options.silent
};
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;
this.unmirror();
this.mirroring = attachments;
// Clear the collection silently. A `reset` event will be fired
// when `observe()` calls `validateAll()`.
this.reset( [], { silent: true } );
this.observe( attachments );
return this;
},
unmirror: function() {
if ( ! this.mirroring )
return;
this.unobserve( this.mirroring );
delete this.mirroring;
},
more: function( options ) {
var deferred = $.Deferred(),
mirroring = this.mirroring,
attachments = this;
if ( ! mirroring || ! mirroring.more )
return deferred.resolveWith( this ).promise();
// If we're mirroring another collection, forward `more` to
// the mirrored collection. Account for a race condition by
// checking if we're still mirroring that collection when
// the request resolves.
mirroring.more( options ).done( function() {
if ( this === attachments.mirroring )
deferred.resolveWith( this );
});
return deferred.promise();
},
hasMore: function() {
return this.mirroring ? this.mirroring.hasMore() : false;
},
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() ) );
},
// If this collection is sorted by `menuOrder`, recalculates and saves
// the menu order to the database.
saveMenuOrder: function() {
if ( 'menuOrder' !== this.props.get('orderby') )
return;
// Removes any uploading attachments, updates each attachment's
// menu order, and returns an object with an { id: menuOrder }
// mapping to pass to the request.
var attachments = this.chain().filter( function( attachment ) {
return ! _.isUndefined( attachment.id );
}).map( function( attachment, index ) {
// Indices start at 1.
index = index + 1;
attachment.set( 'menuOrder', index );
return [ attachment.id, index ];
}).object().value();
if ( _.isEmpty( attachments ) )
return;
return media.post( 'save-attachment-order', {
nonce: media.model.settings.post.nonce,
post_id: media.model.settings.post.id,
attachments: attachments
});
}
}, {
comparator: function( a, b, options ) {
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();
}
// If `options.ties` is set, don't enforce the `cid` tiebreaker.
if ( options && options.ties )
ac = bc = null;
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');
return ! type || -1 !== type.indexOf( attachment.get('type') );
},
uploadedTo: function( attachment ) {
var uploadedTo = this.props.get('uploadedTo');
if ( _.isUndefined( uploadedTo ) )
return true;
return uploadedTo === attachment.get('uploadedTo');
}
}
});
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 ) {
var orderby = this.props.get('orderby'),
order = this.props.get('order');
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(), { ties: true });
// 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' === order && ( 'date' === orderby || 'modified' === orderby ) ) {
return attachment.get( orderby ) >= this.created;
// If we're sorting by menu order and we have no items,
// accept any items that have the default menu order (0).
} else if ( 'ASC' === order && 'menuOrder' === orderby ) {
return attachment.get( orderby ) === 0;
}
// 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', 'post_parent' ];
if ( wp.Uploader && _( this.args ).chain().keys().difference( allowed ).isEmpty().value() )
this.observe( wp.Uploader.queue );
},
hasMore: function() {
return this._hasMore;
},
more: function( options ) {
var query = this;
if ( this._more && 'pending' === this._more.state() )
return this._more;
if ( ! this.hasMore() )
return $.Deferred().resolveWith( this ).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',
post_id: media.model.settings.post.id
});
// 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', 'menuOrder' ],
valuemap: {
'id': 'ID',
'uploadedTo': 'parent',
'menuOrder': 'menu_order ID'
}
},
propmap: {
'search': 's',
'type': 'post_mime_type',
'perPage': 'posts_per_page',
'menuOrder': 'menu_order',
'uploadedTo': 'post_parent'
},
// 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 ) {
if ( _.isNull( value ) )
return;
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, false ) );
},
// 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 )
this.remove( this.models );
return Attachments.prototype.add.call( this, models, options );
},
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.getByCid( this._single.cid ) )
delete this._single;
this._single = this._single || this.last();
// If single has changed, fire an event.
if ( this._single !== previous ) {
if ( previous ) {
previous.trigger( 'selection:unsingle', previous, this );
// If the model was already removed, trigger the collection
// event manually.
if ( ! this.getByCid( previous.cid ) )
this.trigger( 'selection:unsingle', previous, this );
}
if ( this._single )
this._single.trigger( 'selection:single', this._single, this );
}
// Return the single model, or the last model as a fallback.
return this._single;
}
});
// Clean up. Prevents mobile browsers caching
$(window).on('unload', function(){
window.wp = null;
});
}(jQuery));
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