var View = wp.media.View,
$ = jQuery,
Attachment;
/**
* wp.media.view.Attachment
*
* @memberOf wp.media.view
*
* @class
* @augments wp.media.View
* @augments wp.Backbone.View
* @augments Backbone.View
*/
Attachment = View.extend(/** @lends wp.media.view.Attachment.prototype */{
tagName: 'li',
className: 'attachment',
template: wp.template('attachment'),
attributes: function() {
return {
'tabIndex': 0,
'role': 'checkbox',
'aria-label': this.model.get( 'title' ),
'aria-checked': false,
'data-id': this.model.get( 'id' )
};
},
events: {
'click': 'toggleSelectionHandler',
'change [data-setting]': 'updateSetting',
'change [data-setting] input': 'updateSetting',
'change [data-setting] select': 'updateSetting',
'change [data-setting] textarea': 'updateSetting',
'click .attachment-close': 'removeFromLibrary',
'click .check': 'checkClickHandler',
'keydown': 'toggleSelectionHandler'
},
buttons: {},
initialize: function() {
var selection = this.options.selection,
options = _.defaults( this.options, {
rerenderOnModelChange: true
} );
if ( options.rerenderOnModelChange ) {
this.listenTo( this.model, 'change', this.render );
} else {
this.listenTo( this.model, 'change:percent', this.progress );
}
this.listenTo( this.model, 'change:title', this._syncTitle );
this.listenTo( this.model, 'change:caption', this._syncCaption );
this.listenTo( this.model, 'change:artist', this._syncArtist );
this.listenTo( this.model, 'change:album', this._syncAlbum );
// Update the selection.
this.listenTo( this.model, 'add', this.select );
this.listenTo( this.model, 'remove', this.deselect );
if ( selection ) {
selection.on( 'reset', this.updateSelect, this );
// Update the model's details view.
this.listenTo( this.model, 'selection:single selection:unsingle', this.details );
this.details( this.model, this.controller.state().get('selection') );
}
this.listenTo( this.controller, 'attachment:compat:waiting attachment:compat:ready', this.updateSave );
},
/**
* @returns {wp.media.view.Attachment} Returns itself to allow chaining
*/
dispose: function() {
var selection = this.options.selection;
// Make sure all settings are saved before removing the view.
this.updateAll();
if ( selection ) {
selection.off( null, null, this );
}
/**
* call 'dispose' directly on the parent class
*/
View.prototype.dispose.apply( this, arguments );
return this;
},
/**
* @returns {wp.media.view.Attachment} Returns itself to allow chaining
*/
render: function() {
var options = _.defaults( this.model.toJSON(), {
orientation: 'landscape',
uploading: false,
type: '',
subtype: '',
icon: '',
filename: '',
caption: '',
title: '',
dateFormatted: '',
width: '',
height: '',
compat: false,
alt: '',
description: ''
}, this.options );
options.buttons = this.buttons;
options.describe = this.controller.state().get('describe');
if ( 'image' === options.type ) {
options.size = this.imageSize();
}
options.can = {};
if ( options.nonces ) {
options.can.remove = !! options.nonces['delete'];
options.can.save = !! options.nonces.update;
}
if ( this.controller.state().get('allowLocalEdits') ) {
options.allowLocalEdits = true;
}
if ( options.uploading && ! options.percent ) {
options.percent = 0;
}
this.views.detach();
this.$el.html( this.template( options ) );
this.$el.toggleClass( 'uploading', options.uploading );
if ( options.uploading ) {
this.$bar = this.$('.media-progress-bar div');
} else {
delete this.$bar;
}
// Check if the model is selected.
this.updateSelect();
// Update the save status.
this.updateSave();
this.views.render();
return this;
},
progress: function() {
if ( this.$bar && this.$bar.length ) {
this.$bar.width( this.model.get('percent') + '%' );
}
},
/**
* @param {Object} event
*/
toggleSelectionHandler: function( event ) {
var method;
// Don't do anything inside inputs and on the attachment check and remove buttons.
if ( 'INPUT' === event.target.nodeName || 'BUTTON' === event.target.nodeName ) {
return;
}
// Catch arrow events
if ( 37 === event.keyCode || 38 === event.keyCode || 39 === event.keyCode || 40 === event.keyCode ) {
this.controller.trigger( 'attachment:keydown:arrow', event );
return;
}
// Catch enter and space events
if ( 'keydown' === event.type && 13 !== event.keyCode && 32 !== event.keyCode ) {
return;
}
event.preventDefault();
// In the grid view, bubble up an edit:attachment event to the controller.
if ( this.controller.isModeActive( 'grid' ) ) {
if ( this.controller.isModeActive( 'edit' ) ) {
// Pass the current target to restore focus when closing
this.controller.trigger( 'edit:attachment', this.model, event.currentTarget );
return;
}
if ( this.controller.isModeActive( 'select' ) ) {
method = 'toggle';
}
}
if ( event.shiftKey ) {
method = 'between';
} else if ( event.ctrlKey || event.metaKey ) {
method = 'toggle';
}
this.toggleSelection({
method: method
});
this.controller.trigger( 'selection:toggle' );
},
/**
* @param {Object} options
*/
toggleSelection: function( options ) {
var collection = this.collection,
selection = this.options.selection,
model = this.model,
method = options && options.method,
single, models, singleIndex, modelIndex;
if ( ! selection ) {
return;
}
single = selection.single();
method = _.isUndefined( method ) ? selection.multiple : method;
// If the `method` is set to `between`, select all models that
// exist between the current and the selected model.
if ( 'between' === method && single && selection.multiple ) {
// If the models are the same, short-circuit.
if ( single === model ) {
return;
}
singleIndex = collection.indexOf( single );
modelIndex = collection.indexOf( this.model );
if ( singleIndex < modelIndex ) {
models = collection.models.slice( singleIndex, modelIndex + 1 );
} else {
models = collection.models.slice( modelIndex, singleIndex + 1 );
}
selection.add( models );
selection.single( model );
return;
// If the `method` is set to `toggle`, just flip the selection
// status, regardless of whether the model is the single model.
} else if ( 'toggle' === method ) {
selection[ this.selected() ? 'remove' : 'add' ]( model );
selection.single( model );
return;
} else if ( 'add' === method ) {
selection.add( model );
selection.single( model );
return;
}
// Fixes bug that loses focus when selecting a featured image
if ( ! method ) {
method = 'add';
}
if ( method !== 'add' ) {
method = 'reset';
}
if ( this.selected() ) {
// If the model is the single model, remove it.
// If it is not the same as the single model,
// it now becomes the single model.
selection[ single === model ? 'remove' : 'single' ]( model );
} else {
// If the model is not selected, run the `method` on the
// selection. By default, we `reset` the selection, but the
// `method` can be set to `add` the model to the selection.
selection[ method ]( model );
selection.single( model );
}
},
updateSelect: function() {
this[ this.selected() ? 'select' : 'deselect' ]();
},
/**
* @returns {unresolved|Boolean}
*/
selected: function() {
var selection = this.options.selection;
if ( selection ) {
return !! selection.get( this.model.cid );
}
},
/**
* @param {Backbone.Model} model
* @param {Backbone.Collection} collection
*/
select: function( model, collection ) {
var selection = this.options.selection,
controller = this.controller;
// Check if a selection exists and if it's the collection provided.
// If they're not the same collection, bail; we're in another
// selection's event loop.
if ( ! selection || ( collection && collection !== selection ) ) {
return;
}
// Bail if the model is already selected.
if ( this.$el.hasClass( 'selected' ) ) {
return;
}
// Add 'selected' class to model, set aria-checked to true.
this.$el.addClass( 'selected' ).attr( 'aria-checked', true );
// Make the checkbox tabable, except in media grid (bulk select mode).
if ( ! ( controller.isModeActive( 'grid' ) && controller.isModeActive( 'select' ) ) ) {
this.$( '.check' ).attr( 'tabindex', '0' );
}
},
/**
* @param {Backbone.Model} model
* @param {Backbone.Collection} collection
*/
deselect: function( model, collection ) {
var selection = this.options.selection;
// Check if a selection exists and if it's the collection provided.
// If they're not the same collection, bail; we're in another
// selection's event loop.
if ( ! selection || ( collection && collection !== selection ) ) {
return;
}
this.$el.removeClass( 'selected' ).attr( 'aria-checked', false )
.find( '.check' ).attr( 'tabindex', '-1' );
},
/**
* @param {Backbone.Model} model
* @param {Backbone.Collection} collection
*/
details: function( model, collection ) {
var selection = this.options.selection,
details;
if ( selection !== collection ) {
return;
}
details = selection.single();
this.$el.toggleClass( 'details', details === this.model );
},
/**
* @param {string} size
* @returns {Object}
*/
imageSize: function( size ) {
var sizes = this.model.get('sizes'), matched = false;
size = size || 'medium';
// Use the provided image size if possible.
if ( sizes ) {
if ( sizes[ size ] ) {
matched = sizes[ size ];
} else if ( sizes.large ) {
matched = sizes.large;
} else if ( sizes.thumbnail ) {
matched = sizes.thumbnail;
} else if ( sizes.full ) {
matched = sizes.full;
}
if ( matched ) {
return _.clone( matched );
}
}
return {
url: this.model.get('url'),
width: this.model.get('width'),
height: this.model.get('height'),
orientation: this.model.get('orientation')
};
},
/**
* @param {Object} event
*/
updateSetting: function( event ) {
var $setting = $( event.target ).closest('[data-setting]'),
setting, value;
if ( ! $setting.length ) {
return;
}
setting = $setting.data('setting');
value = event.target.value;
if ( this.model.get( setting ) !== value ) {
this.save( setting, value );
}
},
/**
* Pass all the arguments to the model's save method.
*
* Records the aggregate status of all save requests and updates the
* view's classes accordingly.
*/
save: function() {
var view = this,
save = this._save = this._save || { status: 'ready' },
request = this.model.save.apply( this.model, arguments ),
requests = save.requests ? $.when( request, save.requests ) : request;
// If we're waiting to remove 'Saved.', stop.
if ( save.savedTimer ) {
clearTimeout( save.savedTimer );
}
this.updateSave('waiting');
save.requests = requests;
requests.always( function() {
// If we've performed another request since this one, bail.
if ( save.requests !== requests ) {
return;
}
view.updateSave( requests.state() === 'resolved' ? 'complete' : 'error' );
save.savedTimer = setTimeout( function() {
view.updateSave('ready');
delete save.savedTimer;
}, 2000 );
});
},
/**
* @param {string} status
* @returns {wp.media.view.Attachment} Returns itself to allow chaining
*/
updateSave: function( status ) {
var save = this._save = this._save || { status: 'ready' };
if ( status && status !== save.status ) {
this.$el.removeClass( 'save-' + save.status );
save.status = status;
}
this.$el.addClass( 'save-' + save.status );
return this;
},
updateAll: function() {
var $settings = this.$('[data-setting]'),
model = this.model,
changed;
changed = _.chain( $settings ).map( function( el ) {
var $input = $('input, textarea, select, [value]', el ),
setting, value;
if ( ! $input.length ) {
return;
}
setting = $(el).data('setting');
value = $input.val();
// Record the value if it changed.
if ( model.get( setting ) !== value ) {
return [ setting, value ];
}
}).compact().object().value();
if ( ! _.isEmpty( changed ) ) {
model.save( changed );
}
},
/**
* @param {Object} event
*/
removeFromLibrary: function( event ) {
// Catch enter and space events
if ( 'keydown' === event.type && 13 !== event.keyCode && 32 !== event.keyCode ) {
return;
}
// Stop propagation so the model isn't selected.
event.stopPropagation();
this.collection.remove( this.model );
},
/**
* Add the model if it isn't in the selection, if it is in the selection,
* remove it.
*
* @param {[type]} event [description]
* @return {[type]} [description]
*/
checkClickHandler: function ( event ) {
var selection = this.options.selection;
if ( ! selection ) {
return;
}
event.stopPropagation();
if ( selection.where( { id: this.model.get( 'id' ) } ).length ) {
selection.remove( this.model );
// Move focus back to the attachment tile (from the check).
this.$el.focus();
} else {
selection.add( this.model );
}
}
});
// Ensure settings remain in sync between attachment views.
_.each({
caption: '_syncCaption',
title: '_syncTitle',
artist: '_syncArtist',
album: '_syncAlbum'
}, function( method, setting ) {
/**
* @function _syncCaption
* @memberOf wp.media.view.Attachment
* @instance
*
* @param {Backbone.Model} model
* @param {string} value
* @returns {wp.media.view.Attachment} Returns itself to allow chaining
*/
/**
* @function _syncTitle
* @memberOf wp.media.view.Attachment
* @instance
*
* @param {Backbone.Model} model
* @param {string} value
* @returns {wp.media.view.Attachment} Returns itself to allow chaining
*/
/**
* @function _syncArtist
* @memberOf wp.media.view.Attachment
* @instance
*
* @param {Backbone.Model} model
* @param {string} value
* @returns {wp.media.view.Attachment} Returns itself to allow chaining
*/
/**
* @function _syncAlbum
* @memberOf wp.media.view.Attachment
* @instance
*
* @param {Backbone.Model} model
* @param {string} value
* @returns {wp.media.view.Attachment} Returns itself to allow chaining
*/
Attachment.prototype[ method ] = function( model, value ) {
var $setting = this.$('[data-setting="' + setting + '"]');
if ( ! $setting.length ) {
return this;
}
// If the updated value is in sync with the value in the DOM, there
// is no need to re-render. If we're currently editing the value,
// it will automatically be in sync, suppressing the re-render for
// the view we're editing, while updating any others.
if ( value === $setting.find('input, textarea, select, [value]').val() ) {
return this;
}
return this.render();
};
});
module.exports = Attachment;