[MashaDo]

function() {
	var _self = this;
	var _dictionary;

	function getDictionary(callback) {
		chrome.extension.sendRequest({id: "getDictionary"}, function(response) {
			_dictionary = response; // Store the dictionary for later use аа
			callback.apply(_self, arguments);
		});
	}

	function handleText(textNode) {
		var replacements = _dictionary.replacements;
    var expressions = _dictionary.expressions;
		var v = textNode.nodeValue;
		var matchFound = false;

		var regex, original;

		//text replacements
		for(original in replacements) {
			original_escaped = original;

			regex_for_question_mark = /\?/g
			regex_for_period = /\./g

			original_escaped = original_escaped.replace(regex_for_question_mark, "\\?");
			original_escaped = original_escaped.replace(regex_for_period, "\\.");

			regex = new RegExp('\\b' + original_escaped + '\\b', "gi");
			if (v.match(regex)) {
				v = v.replace(regex, replacements[original]);
				matchFound = true;
			}

		}

		// regex replacements
		for(original in expressions) {
			regex = new RegExp(original, "g");
			if (v.match(regex)) {
				v = v.replace(regex, expressions[original]);
				matchFound = true;
			}

		}

		// Меняем только в случае изменения текста
		if (matchFound) {
			textNode.nodeValue = v;
		}

	}
	function walk(node) {

		//  не удалять. связан с осн узлом

		var child, next;

		switch(node.nodeType) {
			case 1:  // Element
			case 9:  // Document
			case 11: // Document fragment
				child = node.firstChild;
				while(child) {
					next = child.nextSibling;
					walk(child);
					child = next;
				}
				break;
			case 3: // Text 
				handleText(node);
				break;
		}
	}


	var running = true;


	function work() {

		running = true;

	
		walk(document.body);

	
		running = false;
	}



	chrome.extension.sendRequest({id: 'isPaused?'}, function(response) {
		var isPaused = response.value;

	
		if(isPaused) {
        return;
    }

    chrome.extension.sendRequest({id: 'getExcluded'}, function (r2) {

        var ex = r2.value;
        for (x in ex) {
            if (window.location.href.indexOf(ex[x]) != -1) {
                return;
            }
        }

        getDictionary(function() {
            work();
        });
    });

	});



	var timeout = null;

	document.addEventListener('DOMSubtreeModified', function(){
		if (running) {
			return;
		}

		if (timeout) {
			clearTimeout(timeout);
		}

		timeout = setTimeout(work, 500);
	}, false);

})();