ExtJS HtmlEditor extension to support copy and paste from MS Word

Ext.ux.form.HtmlLintEditor.js

/*!
 * Ext JS Library 3.2.1
 * Copyright(c) 2006-2010 Ext JS, Inc.
 * [email protected]
 * http://www.extjs.com/license
 */
Ext.ns('Ext.ux.form');

/**
 * @class Ext.ux.form.HtmlLintEditor
 * @extends Ext.form.HtmlLintEditor
 * Creates an html editor with support of MS Word copy and paste
 * @xtype htmllinteditor
 * @doc: http://dev.sencha.com/deploy/ext-3.3.1/docs/
 * @src: http://dev.sencha.com/deploy/ext-3.3.1/docs/source/HtmlEditor.html#cls-Ext.form.HtmlEditor
 */

Ext.ux.form.HtmlLintEditor = Ext.extend(Ext.form.HtmlEditor, {

    dirtyHtmlTags: [
        // http://stackoverflow.com/questions/2875027/clean-microsoft-word-pasted-text-using-javascript
        // http://stackoverflow.com/questions/1068280/javascript-regex-multiline-flag-doesnt-work
        {regex: /<!--[\s\S]*?-->/gi, replaceVal: ""}, 

        // http://www.1stclassmedia.co.uk/developers/clean-ms-word-formatting.php
        {regex: /<\\?\?xml[^>]*>/gi, replaceVal: ""}, 
        {regex: /<\/?\w+:[^>]*>/gi, replaceVal: ""}, // e.g. <o:p...

        {regex: /\s*MSO[-:][^;"']*/gi, replaceVal: ""},
        {regex: /\s*MARGIN[-:][^;"']*/gi, replaceVal: ""},
        {regex: /\s*PAGE[-:][^;"']*/gi, replaceVal: ""},
        {regex: /\s*TAB[-:][^;"']*/gi, replaceVal: ""},
        {regex: /\s*LINE[-:][^;"']*/gi, replaceVal: ""},
        {regex: /\s*FONT-SIZE[^;"']*/gi, replaceVal: ""},
        {regex: /\s*LANG=(["'])[^"']*?\1/gi, replaceVal: ""},
        {regex: /<(P|H\d)[^>]*>([\s\S]*?)<\/\1>/gi, replaceVal: "$2"},

        {regex: /\s*\w+=(["'])((&nbsp;|\s|;)*|\s*;+[^"']*?|[^"']*?;{2,})\1/gi, replaceVal: ""}, 
        {regex: /<span[^>]*>(&nbsp;|\s)*<\/span>/gi, replaceVal: ""},
        //{regex: /<([^\s>]+)[^>]*>(&nbsp;|\s)*<\/\1>/gi, replaceVal: ""},

        // http://www.codinghorror.com/blog/2006/01/cleaning-words-nasty-html.html
        {regex: /<(\/?title|\/?meta|\/?style|\/?st\d|\/?head|\/?html|\/?body|!\[)[^>]*?>/gi, replaceVal: ""},
        {regex: /(\n(\r)?){2,}/gi, replaceVal: ""}        
    ],

    syncValue : function(){
        if(this.initialized){
            var bd = this.getEditorBody();
            var html = bd.innerHTML;

            if (this.hasDirtyHtmlTags(html)){
                // Note: the selection will be lost...
                bd.innerHTML = this.cleanHtml(html);
                if(Ext.isGecko){
                    // Gecko hack, see: https://bugzilla.mozilla.org/show_bug.cgi?id=232791#c8
                    this.setDesignMode(false);  //toggle off first
                    this.setDesignMode(true);
                }
            }
        }

        Ext.ux.form.HtmlLintEditor.superclass.syncValue.call(this);
    },

    hasDirtyHtmlTags: function(html){
        if (!html) return;

        var hasDirtyHtmlTags = false; 
        Ext.each(this.dirtyHtmlTags, function(tag, idx){
            return !(hasDirtyHtmlTags = html.match(tag.regex));
        });
        return hasDirtyHtmlTags;
    },

    cleanHtml: function(html) {
        if (!html) return;

        Ext.each(this.dirtyHtmlTags, function(tag, idx){
            html = html.replace(tag.regex, tag.replaceVal);
        });

        // http://www.tim-jarrett.com/labs_javascript_scrub_word.php
        html = html.replace(new RegExp(String.fromCharCode(8220), 'gi'), '"'); //“
        html = html.replace(new RegExp(String.fromCharCode(8221), 'gi'), '"'); //”
        html = html.replace(new RegExp(String.fromCharCode(8216), 'gi'), "'"); //‘
        html = html.replace(new RegExp(String.fromCharCode(8217), 'gi'), "'"); //‘
        html = html.replace(new RegExp(String.fromCharCode(8211), 'gi'), "-"); //–
        html = html.replace(new RegExp(String.fromCharCode(8212), 'gi'), "--"); //—
        html = html.replace(new RegExp(String.fromCharCode(189), 'gi'), "1/2"); //½
        html = html.replace(new RegExp(String.fromCharCode(188), 'gi'), "1/4"); //¼
        html = html.replace(new RegExp(String.fromCharCode(190), 'gi'), "3/4"); //¾
        html = html.replace(new RegExp(String.fromCharCode(169), 'gi'), "(C)"); //©
        html = html.replace(new RegExp(String.fromCharCode(174), 'gi'), "(R)"); //®
        html = html.replace(new RegExp(String.fromCharCode(8230), 'gi'), "..."); //…

        return Ext.ux.form.HtmlLintEditor.superclass.cleanHtml.call(this, html);
    }
});

Ext.reg('htmllinteditor', Ext.ux.form.HtmlLintEditor);