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msd2/wordpress/wp-includes/js/plupload/wp-plupload.js

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+/* global pluploadL10n, plupload, _wpPluploadSettings */
+
+/**
+ * @namespace wp
+ */
+window.wp = window.wp || {};
+
+( function( exports, $ ) {
+	var Uploader;
+
+	if ( typeof _wpPluploadSettings === 'undefined' ) {
+		return;
+	}
+
+	/**
+	 * A WordPress uploader.
+	 *
+	 * The Plupload library provides cross-browser uploader UI integration.
+	 * This object bridges the Plupload API to integrate uploads into the
+	 * WordPress back end and the WordPress media experience.
+	 *
+	 * @class
+	 * @memberOf wp
+	 * @alias wp.Uploader
+	 *
+	 * @param {object} options           The options passed to the new plupload instance.
+	 * @param {object} options.container The id of uploader container.
+	 * @param {object} options.browser   The id of button to trigger the file select.
+	 * @param {object} options.dropzone  The id of file drop target.
+	 * @param {object} options.plupload  An object of parameters to pass to the plupload instance.
+	 * @param {object} options.params    An object of parameters to pass to $_POST when uploading the file.
+	 *                                   Extends this.plupload.multipart_params under the hood.
+	 */
+	Uploader = function( options ) {
+		var self = this,
+			isIE = navigator.userAgent.indexOf('Trident/') != -1 || navigator.userAgent.indexOf('MSIE ') != -1,
+			elements = {
+				container: 'container',
+				browser:   'browse_button',
+				dropzone:  'drop_element'
+			},
+			key, error;
+
+		this.supports = {
+			upload: Uploader.browser.supported
+		};
+
+		this.supported = this.supports.upload;
+
+		if ( ! this.supported ) {
+			return;
+		}
+
+		// Arguments to send to pluplad.Uploader().
+		// Use deep extend to ensure that multipart_params and other objects are cloned.
+		this.plupload = $.extend( true, { multipart_params: {} }, Uploader.defaults );
+		this.container = document.body; // Set default container.
+
+		// Extend the instance with options.
+		//
+		// Use deep extend to allow options.plupload to override individual
+		// default plupload keys.
+		$.extend( true, this, options );
+
+		// Proxy all methods so this always refers to the current instance.
+		for ( key in this ) {
+			if ( $.isFunction( this[ key ] ) ) {
+				this[ key ] = $.proxy( this[ key ], this );
+			}
+		}
+
+		// Ensure all elements are jQuery elements and have id attributes,
+		// then set the proper plupload arguments to the ids.
+		for ( key in elements ) {
+			if ( ! this[ key ] ) {
+				continue;
+			}
+
+			this[ key ] = $( this[ key ] ).first();
+
+			if ( ! this[ key ].length ) {
+				delete this[ key ];
+				continue;
+			}
+
+			if ( ! this[ key ].prop('id') ) {
+				this[ key ].prop( 'id', '__wp-uploader-id-' + Uploader.uuid++ );
+			}
+
+			this.plupload[ elements[ key ] ] = this[ key ].prop('id');
+		}
+
+		// If the uploader has neither a browse button nor a dropzone, bail.
+		if ( ! ( this.browser && this.browser.length ) && ! ( this.dropzone && this.dropzone.length ) ) {
+			return;
+		}
+
+		// Make sure flash sends cookies (seems in IE it does without switching to urlstream mode)
+		if ( ! isIE && 'flash' === plupload.predictRuntime( this.plupload ) &&
+			( ! this.plupload.required_features || ! this.plupload.required_features.hasOwnProperty( 'send_binary_string' ) ) ) {
+
+			this.plupload.required_features = this.plupload.required_features || {};
+			this.plupload.required_features.send_binary_string = true;
+		}
+
+		// Initialize the plupload instance.
+		this.uploader = new plupload.Uploader( this.plupload );
+		delete this.plupload;
+
+		// Set default params and remove this.params alias.
+		this.param( this.params || {} );
+		delete this.params;
+
+		/**
+		 * Custom error callback.
+		 *
+		 * Add a new error to the errors collection, so other modules can track
+		 * and display errors. @see wp.Uploader.errors.
+		 *
+		 * @param  {string}        message
+		 * @param  {object}        data
+		 * @param  {plupload.File} file     File that was uploaded.
+		 */
+		error = function( message, data, file ) {
+			if ( file.attachment ) {
+				file.attachment.destroy();
+			}
+
+			Uploader.errors.unshift({
+				message: message || pluploadL10n.default_error,
+				data:    data,
+				file:    file
+			});
+
+			self.error( message, data, file );
+		};
+
+		/**
+		 * After the Uploader has been initialized, initialize some behaviors for the dropzone.
+		 *
+		 * @param {plupload.Uploader} uploader Uploader instance.
+		 */
+		this.uploader.bind( 'init', function( uploader ) {
+			var timer, active, dragdrop,
+				dropzone = self.dropzone;
+
+			dragdrop = self.supports.dragdrop = uploader.features.dragdrop && ! Uploader.browser.mobile;
+
+			// Generate drag/drop helper classes.
+			if ( ! dropzone ) {
+				return;
+			}
+
+			dropzone.toggleClass( 'supports-drag-drop', !! dragdrop );
+
+			if ( ! dragdrop ) {
+				return dropzone.unbind('.wp-uploader');
+			}
+
+			// 'dragenter' doesn't fire correctly, simulate it with a limited 'dragover'.
+			dropzone.bind( 'dragover.wp-uploader', function() {
+				if ( timer ) {
+					clearTimeout( timer );
+				}
+
+				if ( active ) {
+					return;
+				}
+
+				dropzone.trigger('dropzone:enter').addClass('drag-over');
+				active = true;
+			});
+
+			dropzone.bind('dragleave.wp-uploader, drop.wp-uploader', function() {
+				// Using an instant timer prevents the drag-over class from
+				// being quickly removed and re-added when elements inside the
+				// dropzone are repositioned.
+				//
+				// @see https://core.trac.wordpress.org/ticket/21705
+				timer = setTimeout( function() {
+					active = false;
+					dropzone.trigger('dropzone:leave').removeClass('drag-over');
+				}, 0 );
+			});
+
+			self.ready = true;
+			$(self).trigger( 'uploader:ready' );
+		});
+
+		this.uploader.bind( 'postinit', function( up ) {
+			up.refresh();
+			self.init();
+		});
+
+		this.uploader.init();
+
+		if ( this.browser ) {
+			this.browser.on( 'mouseenter', this.refresh );
+		} else {
+			this.uploader.disableBrowse( true );
+			// If HTML5 mode, hide the auto-created file container.
+			$('#' + this.uploader.id + '_html5_container').hide();
+		}
+
+		/**
+		 * After files were filtered and added to the queue, create a model for each.
+		 *
+		 * @param {plupload.Uploader} uploader Uploader instance.
+		 * @param {Array}             files    Array of file objects that were added to queue by the user.
+		 */
+		this.uploader.bind( 'FilesAdded', function( up, files ) {
+			_.each( files, function( file ) {
+				var attributes, image;
+
+				// Ignore failed uploads.
+				if ( plupload.FAILED === file.status ) {
+					return;
+				}
+
+				// Generate attributes for a new `Attachment` model.
+				attributes = _.extend({
+					file:      file,
+					uploading: true,
+					date:      new Date(),
+					filename:  file.name,
+					menuOrder: 0,
+					uploadedTo: wp.media.model.settings.post.id
+				}, _.pick( file, 'loaded', 'size', 'percent' ) );
+
+				// Handle early mime type scanning for images.
+				image = /(?:jpe?g|png|gif)$/i.exec( file.name );
+
+				// For images set the model's type and subtype attributes.
+				if ( image ) {
+					attributes.type = 'image';
+
+					// `jpeg`, `png` and `gif` are valid subtypes.
+					// `jpg` is not, so map it to `jpeg`.
+					attributes.subtype = ( 'jpg' === image[0] ) ? 'jpeg' : image[0];
+				}
+
+				// Create a model for the attachment, and add it to the Upload queue collection
+				// so listeners to the upload queue can track and display upload progress.
+				file.attachment = wp.media.model.Attachment.create( attributes );
+				Uploader.queue.add( file.attachment );
+
+				self.added( file.attachment );
+			});
+
+			up.refresh();
+			up.start();
+		});
+
+		this.uploader.bind( 'UploadProgress', function( up, file ) {
+			file.attachment.set( _.pick( file, 'loaded', 'percent' ) );
+			self.progress( file.attachment );
+		});
+
+		/**
+		 * After a file is successfully uploaded, update its model.
+		 *
+		 * @param {plupload.Uploader} uploader Uploader instance.
+		 * @param {plupload.File}     file     File that was uploaded.
+		 * @param {Object}            response Object with response properties.
+		 * @return {mixed}
+		 */
+		this.uploader.bind( 'FileUploaded', function( up, file, response ) {
+			var complete;
+
+			try {
+				response = JSON.parse( response.response );
+			} catch ( e ) {
+				return error( pluploadL10n.default_error, e, file );
+			}
+
+			if ( ! _.isObject( response ) || _.isUndefined( response.success ) )
+				return error( pluploadL10n.default_error, null, file );
+			else if ( ! response.success )
+				return error( response.data && response.data.message, response.data, file );
+
+			_.each(['file','loaded','size','percent'], function( key ) {
+				file.attachment.unset( key );
+			});
+
+			file.attachment.set( _.extend( response.data, { uploading: false }) );
+			wp.media.model.Attachment.get( response.data.id, file.attachment );
+
+			complete = Uploader.queue.all( function( attachment ) {
+				return ! attachment.get('uploading');
+			});
+
+			if ( complete )
+				Uploader.queue.reset();
+
+			self.success( file.attachment );
+		});
+
+		/**
+		 * When plupload surfaces an error, send it to the error handler.
+		 *
+		 * @param {plupload.Uploader} uploader Uploader instance.
+		 * @param {Object}            error    Contains code, message and sometimes file and other details.
+		 */
+		this.uploader.bind( 'Error', function( up, pluploadError ) {
+			var message = pluploadL10n.default_error,
+				key;
+
+			// Check for plupload errors.
+			for ( key in Uploader.errorMap ) {
+				if ( pluploadError.code === plupload[ key ] ) {
+					message = Uploader.errorMap[ key ];
+
+					if ( _.isFunction( message ) ) {
+						message = message( pluploadError.file, pluploadError );
+					}
+
+					break;
+				}
+			}
+
+			error( message, pluploadError, pluploadError.file );
+			up.refresh();
+		});
+
+	};
+
+	// Adds the 'defaults' and 'browser' properties.
+	$.extend( Uploader, _wpPluploadSettings );
+
+	Uploader.uuid = 0;
+
+	// Map Plupload error codes to user friendly error messages.
+	Uploader.errorMap = {
+		'FAILED':                 pluploadL10n.upload_failed,
+		'FILE_EXTENSION_ERROR':   pluploadL10n.invalid_filetype,
+		'IMAGE_FORMAT_ERROR':     pluploadL10n.not_an_image,
+		'IMAGE_MEMORY_ERROR':     pluploadL10n.image_memory_exceeded,
+		'IMAGE_DIMENSIONS_ERROR': pluploadL10n.image_dimensions_exceeded,
+		'GENERIC_ERROR':          pluploadL10n.upload_failed,
+		'IO_ERROR':               pluploadL10n.io_error,
+		'HTTP_ERROR':             pluploadL10n.http_error,
+		'SECURITY_ERROR':         pluploadL10n.security_error,
+
+		'FILE_SIZE_ERROR': function( file ) {
+			return pluploadL10n.file_exceeds_size_limit.replace('%s', file.name);
+		}
+	};
+
+	$.extend( Uploader.prototype, /** @lends wp.Uploader.prototype */{
+		/**
+		 * Acts as a shortcut to extending the uploader's multipart_params object.
+		 *
+		 * param( key )
+		 *    Returns the value of the key.
+		 *
+		 * param( key, value )
+		 *    Sets the value of a key.
+		 *
+		 * param( map )
+		 *    Sets values for a map of data.
+		 */
+		param: function( key, value ) {
+			if ( arguments.length === 1 && typeof key === 'string' ) {
+				return this.uploader.settings.multipart_params[ key ];
+			}
+
+			if ( arguments.length > 1 ) {
+				this.uploader.settings.multipart_params[ key ] = value;
+			} else {
+				$.extend( this.uploader.settings.multipart_params, key );
+			}
+		},
+
+		/**
+		 * Make a few internal event callbacks available on the wp.Uploader object
+		 * to change the Uploader internals if absolutely necessary.
+		 */
+		init:     function() {},
+		error:    function() {},
+		success:  function() {},
+		added:    function() {},
+		progress: function() {},
+		complete: function() {},
+		refresh:  function() {
+			var node, attached, container, id;
+
+			if ( this.browser ) {
+				node = this.browser[0];
+
+				// Check if the browser node is in the DOM.
+				while ( node ) {
+					if ( node === document.body ) {
+						attached = true;
+						break;
+					}
+					node = node.parentNode;
+				}
+
+				// If the browser node is not attached to the DOM, use a
+				// temporary container to house it, as the browser button
+				// shims require the button to exist in the DOM at all times.
+				if ( ! attached ) {
+					id = 'wp-uploader-browser-' + this.uploader.id;
+
+					container = $( '#' + id );
+					if ( ! container.length ) {
+						container = $('<div class="wp-uploader-browser" />').css({
+							position: 'fixed',
+							top: '-1000px',
+							left: '-1000px',
+							height: 0,
+							width: 0
+						}).attr( 'id', 'wp-uploader-browser-' + this.uploader.id ).appendTo('body');
+					}
+
+					container.append( this.browser );
+				}
+			}
+
+			this.uploader.refresh();
+		}
+	});
+
+	// Create a collection of attachments in the upload queue,
+	// so that other modules can track and display upload progress.
+	Uploader.queue = new wp.media.model.Attachments( [], { query: false });
+
+	// Create a collection to collect errors incurred while attempting upload.
+	Uploader.errors = new Backbone.Collection();
+
+	exports.Uploader = Uploader;
+})( wp, jQuery );