source: trunk/library/tiny_mce/plugins/wordcount/editor_plugin_src.js @ 4829

/**
 * editor_plugin_src.js
 *
 * Copyright 2009, Moxiecode Systems AB
 * Released under LGPL License.
 *
 * License: http://tinymce.moxiecode.com/license
 * Contributing: http://tinymce.moxiecode.com/contributing
 */

(function() {
        tinymce.create('tinymce.plugins.WordCount', {
                block : 0,
                id : null,
                countre : null,
                cleanre : null,

                init : function(ed, url) {
                        var t = this, last = 0;

                        t.countre = ed.getParam('wordcount_countregex', /[\w\u2019\'-]+/g); // u2019 == ’
                        t.cleanre = ed.getParam('wordcount_cleanregex', /[0-9.(),;:!?%#$?\'\"_+=\\\/-]*/g);
                        t.id = ed.id + '-word-count';

                        ed.onPostRender.add(function(ed, cm) {
                                var row, id;

                                // Add it to the specified id or the theme advanced path
                                id = ed.getParam('wordcount_target_id');
                                if (!id) {
                                        row = tinymce.DOM.get(ed.id + '_path_row');

                                        if (row)
                                                tinymce.DOM.add(row.parentNode, 'div', {'style': 'float: right'}, ed.getLang('wordcount.words', 'Words: ') + '<span id="' + t.id + '">0</span>');
                                } else {
                                        tinymce.DOM.add(id, 'span', {}, '<span id="' + t.id + '">0</span>');
                                }
                        });

                        ed.onInit.add(function(ed) {
                                ed.selection.onSetContent.add(function() {
                                        t._count(ed);
                                });

                                t._count(ed);
                        });

                        ed.onSetContent.add(function(ed) {
                                t._count(ed);
                        });

                        ed.onKeyUp.add(function(ed, e) {
                                if (e.keyCode == last)
                                        return;

                                if (13 == e.keyCode || 8 == last || 46 == last)
                                        t._count(ed);

                                last = e.keyCode;
                        });
                },

                _getCount : function(ed) {
                        var tc = 0;
                        var tx = ed.getContent({ format: 'raw' });

                        if (tx) {
                                        tx = tx.replace(/\.\.\./g, ' '); // convert ellipses to spaces
                                        tx = tx.replace(/<.[^<>]*?>/g, ' ').replace(/&nbsp;|&#160;/gi, ' '); // remove html tags and space chars

                                        // deal with html entities
                                        tx = tx.replace(/(\w+)(&.+?;)+(\w+)/, "$1$3").replace(/&.+?;/g, ' ');
                                        tx = tx.replace(this.cleanre, ''); // remove numbers and punctuation

                                        var wordArray = tx.match(this.countre);
                                        if (wordArray) {
                                                        tc = wordArray.length;
                                        }
                        }

                        return tc;
                },

                _count : function(ed) {
                        var t = this;

                        // Keep multiple calls from happening at the same time
                        if (t.block)
                                return;

                        t.block = 1;

                        setTimeout(function() {
                                        var tc = t._getCount(ed);

                                        tinymce.DOM.setHTML(t.id, tc.toString());

                                        setTimeout(function() {t.block = 0;}, 2000);
                        }, 1);
                },

                getInfo: function() {
                        return {
                                longname : 'Word Count plugin',
                                author : 'Moxiecode Systems AB',
                                authorurl : 'http://tinymce.moxiecode.com',
                                infourl : 'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/wordcount',
                                version : tinymce.majorVersion + "." + tinymce.minorVersion
                        };
                }
        });

        tinymce.PluginManager.add('wordcount', tinymce.plugins.WordCount);
})();