/**
 * @license Copyright (c) 2003-2012, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.html or http://ckeditor.com/license
 */
 
 CKEDITOR.plugins.add('wordcount', {
    lang: ['de', 'en', 'ru'],
	init: function (editor) {
        var defaultLimit = 'unlimited';
        var defaultFormat = '<span class="cke_path_item">' + editor.lang.wordcount.WordCount + ' %count%, ' + editor.lang.wordcount.SymbolCount + ' %symbols%, ' + editor.lang.wordcount.NoSpaceCount + ' %nospace%</span>';
        var limit = defaultLimit;
        var format = defaultFormat;
        var intervalId;
        var lastCount = 0;
        var limitReachedNotified = false;
        var limitRestoredNotified = false;
        if (true) {
            function counterId(editor) {
                return 'cke_wordcount_' + editor.name
            }
            function counterElement(editor) {
				return document.getElementById(counterId(editor))
            }
            function strip(html) {
                var tmp = document.createElement("DIV");
                tmp.innerHTML = html;
                return tmp.textContent || tmp.innerText
            }
            function updateCounter(editor) {
                var count = 0;
                var data = (editor.getData() != undefined && strip(editor.getData()) != undefined) ? strip(editor.getData()).trim() : ''; 
                if (data) {
                    count = data.split(/\s+/).length;
                }
                if (count == lastCount) {
                    return true
                } else {
                    lastCount = count
                }
                if (!limitReachedNotified && count > limit) {
                    limitReached(editor)
                } else if (!limitRestoredNotified && count < limit) {
                    limitRestored(editor)
                }
                var html = format.replace('%count%', count).replace('%symbols%', data.length).replace('%nospace%', data.replace(/[^a-zа-я0-9]/gi, '').length);
                counterElement(editor).innerHTML = html
            }
            function limitReached(editor) {
                limitReachedNotified = true;
                limitRestoredNotified = false;
				editor.execCommand( 'undo' );
				// lock editor
				editor.config.Locked = 1;
            }
            function limitRestored(editor) {
                limitRestoredNotified = true;
                limitReachedNotified = false;
				
				editor.config.Locked = 0;
			
            }
            editor.on('uiSpace', function (event) {
				if (event.data.space == 'bottom') {
                    event.data.html += '<div id="' + counterId(event.editor) + '" class="cke_wordcount" style="display:block;float:right;margin-top:0px;margin-right:3px;color:black;"' + ' title="' + CKEDITOR.tools.htmlEncode('Words Counter') + '"' + '>&nbsp;</div>'
                }
            }, editor, null, 100);
            editor.on('instanceReady', function (event) {
                if (editor.config.wordcount_limit != undefined) {
                    limit = editor.config.wordcount_limit
                }
                if (editor.config.wordcount_format != undefined) {
                    format = editor.config.wordcount_format
                }
            }, editor, null, 100);
            editor.on('dataReady', function (event) {
                var count = event.editor.getData().length;
                if (count > limit) {
                    limitReached(editor)
                }
                updateCounter(event.editor)
            }, editor, null, 100);
            editor.on('key', function (event) {}, editor, null, 100);
            editor.on('focus', function (event) {
                editorHasFocus = true;
                intervalId = window.setInterval(function (editor) {
                    updateCounter(editor)
                }, 1000, event.editor)
            }, editor, null, 100);
            editor.on('blur', function (event) {
                editorHasFocus = false;
                if (intervalId) clearInterval(intervalId)
            }, editor, null, 100)
        }
    }
});