uhr/uhr-object.js

function Uhr(renderarea, themeElement) {
	this.renderarea = renderarea;
	this.themeElement = themeElement;
	this.timer = null;
	this.currentTheme = null;
	this.currentLayout = null;
	this.layouts = new Array();
	this.currentMinute = -1;
}

Uhr.prototype.toggle = function() {
	if (this.isOn()) {
		this.stop();
	} else {
		this.start();
	}
}
Uhr.prototype.start = function() {
	if (!this.isOn()) {
		var uhr = this;
		this.timer = window.setInterval(function() {uhr.update();}, 1000);
		this.update();
		$.cookie('status', 'on');
	}
}
Uhr.prototype.stop = function() {
	if (this.isOn()) {
		window.clearInterval(this.timer);
		this.timer = null;
		this.update();
		$.cookie('status', 'off');
	}
}
Uhr.prototype.isOn = function() {
	return this.timer != null;
}
Uhr.prototype.register = function(key, layout) {
	this.layouts[key] = layout;
}
Uhr.prototype.setLayout = function(locale) {
	var newLayout = this.layouts[locale];
	if (newLayout !== undefined && newLayout != this.currentLayout) {
		this.currentLayout = newLayout;
		var renderer = new UhrRenderer(this.currentLayout, this.renderarea);
		renderer.render(this);
		$.cookie('layout', locale);
	}
}
Uhr.prototype.setTheme = function(theme) {
	if (theme != this.currentTheme) {
		this.currentTheme = theme;
		this.themeElement.attr('href', 'uhr-' + theme + '.css');
		$.cookie('theme', theme);
	}
}
Uhr.prototype.update = function() {
	if (this.isOn()) {
		var now = new Date();
		var dotMinute = this.getDotMinute(now);
		if (dotMinute == this.currentMinute) {
			return;
		}
		this.currentMinute = dotMinute;
		var hour = this.getHour(now);
		var coarseMinute = this.getCoarseMinute(now);
		this.clear();
		this.highlight('on');
		for (var i = 1; i <= dotMinute; i++) {
			this.highlight('dot' + i);
		}
		this.highlight('minute' + coarseMinute);
		hour = this.normalizeHour(hour);
		this.highlight('hour' + hour);
		if (coarseMinute == 0) {
			this.highlight('sharphour');
		}
	} else {
		this.clear();
		this.currentMinute = -1;
	}
}
Uhr.prototype.clear = function() {
	this.renderarea.find('.item').removeClass('active');
}
Uhr.prototype.highlight = function(itemClass) {
	this.renderarea.find('.item.' + itemClass).addClass('active');
}
Uhr.prototype.getHour = function(date) {
	if (typeof this.currentLayout.getHour === 'function') {
		return this.currentLayout.getHour(date);
	}
	var hour = date.getHours();
	if (date.getMinutes() >= 25) {
		return hour + 1;
	}
	return hour;
}
Uhr.prototype.getCoarseMinute = function(date) {
	if (typeof this.currentLayout.getCoarseMinute === 'function') {
		return this.currentLayout.getCoarseMinute(date);
	}
	var minutes = date.getMinutes();
	return minutes - this.getDotMinute(date);
}
Uhr.prototype.getDotMinute = function(date) {
	if (typeof this.currentLayout.getDotMinute === 'function') {
		return this.currentLayout.getDotMinute(date);
	}
	var minutes = date.getMinutes();
	return minutes % 5;
}
Uhr.prototype.normalizeHour = function(hour) {
	if (hour > 12) {
		hour %= 12;
	}
	if (hour == 0) {
		return 12;
	}
	return hour;
}

function UhrRenderer(layout, renderarea) {
	this.layout = layout;
	this.renderarea = renderarea;
}
UhrRenderer.prototype.render = function(uhr) {
	var renderer = this;
	this.renderarea.fadeOut('fast', function() {
		renderer.renderarea.empty();
		for (var y = 0; y < renderer.layout.values.length; y++) {
			for (var x = 0; x < renderer.layout.values[y].length; x++) {
				var letter = renderer.layout.values[y][x];
				renderer.renderarea.append(letter.toString());
			}
			if (y < renderer.layout.values.length - 1) {
				renderer.renderarea.append('<br/>');
			}
		}
		uhr.currentMinute = -1;
		uhr.update();
		renderer.renderarea.fadeIn('fast');
	});
}