function centerSimileAjax(date) {
	tl.getBand(0).setCenterVisibleDate(SimileAjax.DateTime.parseGregorianDateTime(date));
}

function setupFilterHighlightControls(div, timeline, bandIndices, theme) {
	var table = document.createElement("table");
	var tr = table.insertRow(0);
	var td = tr.insertCell(0);
	td.innerHTML = "Filter:";
	td = tr.insertCell(1);
	td.innerHTML = "Highlight:";
	var handler = function(elmt, evt, target) {
		onKeyPress(timeline, bandIndices, table);
	};
	tr = table.insertRow(1);
	tr.style.verticalAlign = "top";
	td = tr.insertCell(0);
	var input = document.createElement("input");
	input.type = "text";
	SimileAjax.DOM.registerEvent(input, "keypress", handler);
	td.appendChild(input);
	for (var i = 0; i < theme.event.highlightColors.length; i++) {
		td = tr.insertCell(i + 1);
		input = document.createElement("input");
		input.type = "text";
		SimileAjax.DOM.registerEvent(input, "keypress", handler);
		td.appendChild(input);
		var divColor = document.createElement("div");
		divColor.style.height = "0.5em";
		divColor.style.background = theme.event.highlightColors[i];
		td.appendChild(divColor);
	}
	td = tr.insertCell(tr.cells.length);
	var button = document.createElement("button");
	button.innerHTML = "Clear All";
	SimileAjax.DOM.registerEvent(button, "click", function() {
		clearAll(timeline, bandIndices, table);
	});
	td.appendChild(button);
	div.appendChild(table);
}

var timerID = null;
function onKeyPress(timeline, bandIndices, table) {
	if (timerID != null) {
		window.clearTimeout(timerID);
	}
	timerID = window.setTimeout(function() {
		performFiltering(timeline, bandIndices, table);
	}, 300);
}

function cleanString(s) {
	return s.replace(/^\s+/, '').replace(/\s+$/, '');
}

function performFiltering(timeline, bandIndices, table) {
	timerID = null;
	var tr = table.rows[1];
	var text = cleanString(tr.cells[0].firstChild.value);
	var filterMatcher = null;
	if (text.length > 0) {
		var regex = new RegExp(text, "i");
		filterMatcher = function(evt) {
			return regex.test(evt.getText()) || regex.test(evt.getDescription());
		};
	}
	var regexes = [];
	var hasHighlights = false;
	for (var x = 1; x < tr.cells.length - 1; x++) {
		var input = tr.cells[x].firstChild;
		var text2 = cleanString(input.value);
		if (text2.length > 0) {
			hasHighlights = true;
			regexes.push(new RegExp(text2, "i"));
		} else {
			regexes.push(null);
		}
	}
	var highlightMatcher = hasHighlights ? function(evt) {
		var text = evt.getText();
		var description = evt.getDescription();
		for (var x = 0; x < regexes.length; x++) {
			var regex = regexes[x];
			if (regex != null && (regex.test(text) || regex.test(description))) {
				return x;
			}
		}
		return -1;
	} : null;
	for (var i = 0; i < bandIndices.length; i++) {
			var bandIndex = bandIndices[i];
			timeline.getBand(bandIndex).getEventPainter().setFilterMatcher(filterMatcher);
			timeline.getBand(bandIndex).getEventPainter().setHighlightMatcher(highlightMatcher);
	}
	timeline.paint();
}

function clearAll(timeline, bandIndices, table) {
	var tr = table.rows[1];
	for (var x = 0; x < tr.cells.length - 1; x++) {
		tr.cells[x].firstChild.value = "";
	}
	
	for (var i = 0; i < bandIndices.length; i++) {
		var bandIndex = bandIndices[i];
		timeline.getBand(bandIndex).getEventPainter().setFilterMatcher(null);
		timeline.getBand(bandIndex).getEventPainter().setHighlightMatcher(null);
	}
	timeline.paint();
}