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usedfiles.js
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usedfiles.js
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// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* @package atto_managefiles
* @copyright 2014 Frédéric Massart
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* @module moodle-atto_managefiles-usedfiles
*/
/**
* Atto text editor managefiles usedfiles plugin.
*
* @namespace M.atto_managefiles
* @class usedfiles
*/
/**
* CSS constants.
*
* @type {Object}
*/
var CSS = {
HASMISSINGFILES: 'has-missing-files',
HASUNUSEDFILES: 'has-unused-files'
};
/**
* Selectors constants.
*
* @type {Object}
*/
var SELECTORS = {
FILEANCESTOR: '.fitem',
FORM: '#atto_managefiles_manageform',
MISSINGFILES: '.missing-files'
};
M.atto_managefiles = M.atto_managefiles || {};
M.atto_managefiles.usedfiles = M.atto_managefiles.usedfiles || {
/**
* The user context.
*
* @property _usercontext
* @type Number
* @private
*/
_usercontext: null,
/**
* Area Item ID.
*
* @property _itemid
* @type String
* @private
*/
_itemid: null,
/**
* The editor elementid
*
* @property _elementid
* @type String
* @private
*/
_elementid: null,
/**
* Init function.
*
* @param {Object} allFiles The keys are the file names, the values are the hashes.
* @return {Void}
*/
init: function(config) {
this._usercontext = config.usercontext;
this._itemid = config.itemid;
this._elementid = config.elementid;
var allFiles = config.files;
var form = Y.one(SELECTORS.FORM),
usedFiles,
unusedFiles,
missingFiles,
missingFilesTxt,
i;
if (!form || !window.parent) {
Y.log("Unable to find parent window", 'warn', 'moodle-atto_managemedia-usedfiles');
return;
}
usedFiles = this._getUsedFiles();
unusedFiles = this.findUnusedFiles(allFiles, usedFiles);
missingFiles = this.findMissingFiles(allFiles, usedFiles);
// There are some unused files.
if (unusedFiles.length > 0) {
// Loop over all the files in the form.
form.all('input[type=checkbox][name^="deletefile"]').each(function(node) {
// If the file is used, remove it.
if (Y.Array.indexOf(unusedFiles, node.getData('filename')) === -1) {
node.ancestor(SELECTORS.FILEANCESTOR).remove();
}
});
form.addClass(CSS.HASUNUSEDFILES);
} else {
// This is needed as the init may be called twice due to the double call to $PAGE->requires->yui_module().
form.removeClass(CSS.HASUNUSEDFILES);
}
// There are some files missing.
if (missingFiles.length > 0) {
missingFilesTxt = '<ul>';
for (i = 0; i < missingFiles.length; i++) {
missingFilesTxt += '<li>' + Y.Escape.html(missingFiles[i]) + '</li>';
}
missingFilesTxt += '</ul>';
form.one(SELECTORS.MISSINGFILES).setHTML('').append(missingFilesTxt);
form.addClass(CSS.HASMISSINGFILES);
} else {
form.removeClass(CSS.HASMISSINGFILES);
}
},
/**
* Return the list of files used in the area.
*
* @method _getUsedFiles
* @return {Object} List of files used where the keys are the name of the files, the value is true.
* @private
*/
_getUsedFiles: function() {
var content = Y.one(window.parent.document.getElementById(this._elementid + 'editable')),
baseUrl = M.cfg.wwwroot + '/draftfile.php/' + this._usercontext + '/user/draft/' + this._itemid + '/',
pattern = new RegExp(baseUrl.replace(/[\-\/\\\^$*+?.()|\[\]{}]/g, '\\$&') + "(.+?)[\\?\"']", 'gm'),
filename = '',
match = '',
usedFiles = {};
while ((match = pattern.exec(content.get('innerHTML'))) !== null) {
filename = decodeURI(match[1]);
usedFiles[filename] = true;
}
return usedFiles;
},
/**
* Return an array of unused files.
*
* @param {Object} allFiles Where the keys are the file names.
* @param {Object} usedFiles Where the keys are the file names.
* @return {Array} Of file names.
*/
findUnusedFiles: function(allFiles, usedFiles) {
var key,
list = [];
for (key in allFiles) {
if (!usedFiles[key]) {
list.push(key);
}
}
return list;
},
/**
* Return an array of missing files.
*
* @param {Object} allFiles Where the keys are the file names.
* @param {Object} usedFiles Where the keys are the file names.
* @return {Array} Of file names.
*/
findMissingFiles: function(allFiles, usedFiles) {
var key,
list = [];
for (key in usedFiles) {
if (!allFiles[key]) {
list.push(key);
}
}
return list;
}
};