Improve `wp.Uploader` documentation.

Props ericlewis.
See #30260.

Built from https://develop.svn.wordpress.org/trunk@30244


git-svn-id: http://core.svn.wordpress.org/trunk@30244 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Scott Taylor 2014-11-05 19:37:23 +00:00
parent 6ad06ca03d
commit 2d1080aed1
3 changed files with 69 additions and 22 deletions

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@ -1,6 +1,6 @@
<?php
/**
* Accepts file uploads from swfupload or other asynchronous upload methods.
* Server-side file upload handler from wp-plupload, swfupload or other asynchronous upload methods.
*
* @package WordPress
* @subpackage Administration

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@ -10,18 +10,19 @@ window.wp = window.wp || {};
}
/**
* An object that helps create a WordPress uploader using plupload.
* A WordPress uploader.
*
* @param options - object - The options passed to the new plupload instance.
* Accepts the following parameters:
* - container - The id of uploader container.
* - browser - The id of button to trigger the file select.
* - dropzone - The id of file drop target.
* - plupload - An object of parameters to pass to the plupload instance.
* - params - An object of parameters to pass to $_POST when uploading the file.
* Extends this.plupload.multipart_params under the hood.
* 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.
*
* @param attributes - object - Attributes and methods for this specific instance.
* @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,
@ -43,11 +44,12 @@ window.wp = window.wp || {};
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
// Extend the instance with options.
//
// Use deep extend to allow options.plupload to override individual
// default plupload keys.
@ -60,8 +62,8 @@ window.wp = window.wp || {};
}
}
// Ensure all elements are jQuery elements and have id attributes
// Then set the proper plupload arguments to the ids.
// 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;
@ -94,6 +96,7 @@ window.wp = window.wp || {};
this.plupload.required_features.send_binary_string = true;
}
// Initialize the plupload instance.
this.uploader = new plupload.Uploader( this.plupload );
delete this.plupload;
@ -101,6 +104,16 @@ window.wp = window.wp || {};
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();
@ -115,6 +128,11 @@ window.wp = window.wp || {};
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;
@ -132,8 +150,7 @@ window.wp = window.wp || {};
return dropzone.unbind('.wp-uploader');
}
// 'dragenter' doesn't fire correctly,
// simulate it with a limited 'dragover'
// 'dragenter' doesn't fire correctly, simulate it with a limited 'dragover'.
dropzone.bind( 'dragover.wp-uploader', function() {
if ( timer ) {
clearTimeout( timer );
@ -152,7 +169,7 @@ window.wp = window.wp || {};
// being quickly removed and re-added when elements inside the
// dropzone are repositioned.
//
// See https://core.trac.wordpress.org/ticket/21705
// @see https://core.trac.wordpress.org/ticket/21705
timer = setTimeout( function() {
active = false;
dropzone.trigger('dropzone:leave').removeClass('drag-over');
@ -173,6 +190,13 @@ window.wp = window.wp || {};
$('#' + this.uploader.id + '_html5_container').hide();
}
/**
* After files were filtered and added to the queue, create a model for each.
*
* @event FilesAdded
* @param {plupload.Uploader} uploader Uploader instance.
* @param {Array} files Array of file objects that were added to queue by the user.
*/
this.uploader.bind( 'FilesAdded', function( up, files ) {
_.each( files, function( file ) {
var attributes, image;
@ -195,7 +219,7 @@ window.wp = window.wp || {};
// Handle early mime type scanning for images.
image = /(?:jpe?g|png|gif)$/i.exec( file.name );
// Did we find an image?
// For images set the model's type and subtype attributes.
if ( image ) {
attributes.type = 'image';
@ -204,9 +228,9 @@ window.wp = window.wp || {};
attributes.subtype = ( 'jpg' === image[0] ) ? 'jpeg' : image[0];
}
// Create the `Attachment`.
// 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 );
@ -221,6 +245,14 @@ window.wp = window.wp || {};
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;
@ -252,6 +284,12 @@ window.wp = window.wp || {};
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;
@ -283,6 +321,7 @@ window.wp = window.wp || {};
Uploader.uuid = 0;
// Map Plupload error codes to user friendly error messages.
Uploader.errorMap = {
'FAILED': pluploadL10n.upload_failed,
'FILE_EXTENSION_ERROR': pluploadL10n.invalid_filetype,
@ -324,6 +363,10 @@ window.wp = window.wp || {};
}
},
/**
* 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() {},
@ -370,7 +413,11 @@ window.wp = window.wp || {};
}
});
// 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;

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@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.1-alpha-30243';
$wp_version = '4.1-alpha-30244';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.