moo.fx.js

介绍无线可视门铃系统原理

	},

	setHTML: function(html){
		this.innerHTML = html;
		return this;
	},

	getProperty: function(property){
		return this.getAttribute(property);
	},

	getTag: function(){
		return this.tagName.toLowerCase();
	},

	getOffset: function(what){
		what = what.capitalize();
		var el = this;
		var offset = 0;
		do {
			offset += el['offset'+what] || 0;
			el = el.offsetParent;
		} while (el);
		return offset;
	},

	getTop: function(){
		return this.getOffset('top');
	},

	getLeft: function(){
		return this.getOffset('left');
	},

	getValue: function(){
		var value = false;
		switch(this.getTag()){
			case 'select': value = this.getElementsByTagName('option')[this.selectedIndex].value; break;
			case 'input': if ( (this.checked && ['checkbox', 'radio'].test(this.type)) || (['hidden', 'text', 'password'].test(this.type)) ) 
				value = this.value; break;
			case 'textarea': value = this.value;
		}
		return value;
	}

});

new Object.Native(Element);

Element.extend({
	hasClassName: Element.prototype.hasClass,
	addClassName: Element.prototype.addClass,
	removeClassName: Element.prototype.removeClass,
	toggleClassName: Element.prototype.toggleClass
});

function $Element(el, method, args){
	if ($type(args) != 'array') args = [args];
	return Element.prototype[method].apply(el, args);
};

function $(el){
	if ($type(el) == 'string') el = document.getElementById(el);
	if ($type(el) == 'element'){
		if (!el.extend){
			Unload.elements.push(el);
			el.extend = Object.extend;
			el.extend(Element.prototype);
		}
		return el;
	} else return false;
};

window.addEvent = document.addEvent = Element.prototype.addEvent;
window.removeEvent = document.removeEvent = Element.prototype.removeEvent;

var Unload = {

	elements: [], functions: [], vars: [],

	unload: function(){
		Unload.functions.each(function(fn){
			fn();
		});
	
		window.removeEvent('unload', window.removeFunction);
	
		Unload.elements.each(function(el){
			for(var p in Element.prototype){
				window[p] = null;
				document[p] = null;
				el[p] = null;
			}
			el.extend = null;
		});
	}

};

window.removeFunction = Unload.unload;
window.addEvent('unload', window.removeFunction);
var Fx = fx = {};

Fx.Base = new Class({

	setOptions: function(options){
		this.options = Object.extend({
			onStart: Class.empty,
			onComplete: Class.empty,
			transition: Fx.Transitions.sineInOut,
			duration: 500,
			unit: 'px',
			wait: true,
			fps: 50
		}, options || {});
	},

	step: function(){
		var time = new Date().getTime();
		if (time < this.time + this.options.duration){
			this.cTime = time - this.time;
			this.setNow();
		} else {
			this.options.onComplete.pass(this.element, this).delay(10);
			this.clearTimer();
			this.callChain();
			this.now = this.to;
		}
		this.increase();
	},

	set: function(to){
		this.now = to;
		this.increase();
		return this;
	},

	setNow: function(){
		this.now = this.compute(this.from, this.to);
	},

	compute: function(from, to){
		return this.options.transition(this.cTime, from, (to - from), this.options.duration);
	},

	custom: function(from, to){
		if (!this.options.wait) this.clearTimer();
		if (this.timer) return;
		this.options.onStart.pass(this.element, this).delay(10);
		this.from = from;
		this.to = to;
		this.time = new Date().getTime();
		this.timer = this.step.periodical(Math.round(1000/this.options.fps), this);
		return this;
	},
	clearTimer: function(){
		this.timer = $clear(this.timer);
		return this;
	},

	setStyle: function(element, property, value){
		element.setStyle(property, value + this.options.unit);
	}

});

Fx.Base.implement(new Chain);

Fx.Style = Fx.Base.extend({

	initialize: function(el, property, options){
		this.element = $(el);
		this.setOptions(options);
		this.property = property.camelCase();
	},

	hide: function(){
		return this.set(0);
	},

	goTo: function(val){
		return this.custom(this.now || 0, val);
	},

	increase: function(){
		this.setStyle(this.element, this.property, this.now);
	}

});

Fx.Styles = Fx.Base.extend({

	initialize: function(el, options){
		this.element = $(el);
		this.setOptions(options);
		this.now = {};
	},

	setNow: function(){
		for (var p in this.from) this.now[p] = this.compute(this.from[p], this.to[p]);
	},

	custom: function(objFromTo){
		if (this.timer && this.options.wait) return;
		var from = {};
		var to = {};
		for (var p in objFromTo){
			from[p] = objFromTo[p][0];
			to[p] = objFromTo[p][1];
		}
		return this.parent(from, to);
	},

	increase: function(){
		for (var p in this.now) this.setStyle(this.element, p, this.now[p]);
	}

});

Element.extend({

	effect: function(property, options){
		return new Fx.Style(this, property, options);
	},

	effects: function(options){
		return new Fx.Styles(this, options);
	}

});

Fx.Transitions = {
	linear: function(t, b, c, d){
		return c*t/d + b;
	},
	sineInOut: function(t, b, c, d){
		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
	}

};

function $S(){
	var els = [];
	$A(arguments).each(function(sel){
		if ($type(sel) == 'string') els.extend(document.getElementsBySelector(sel));
		else if ($type(sel) == 'element') els.push($(sel));
	});
	return $Elements(els);
};

var $$ = $S;

function $E(selector, filter){
	return ($(filter) || document).getElement(selector);
};

function $ES(selector, filter){
	return ($(filter) || document).getElementsBySelector(selector);
};

function $Elements(elements){
	return Object.extend(elements, new Elements);
};

Element.extend({

	getElements: function(selector){
		var filters = [];
		selector.clean().split(' ').each(function(sel, i){
			var bits = sel.test('^(\\w*|\\*)(?:#(\\w+)|\\.(\\w+))?(?:\\[["\']?(\\w+)["\']?([\\*\\^\\$]?=)["\']?(\\w*)["\']?\\])?$');
			if (!bits) return;
			if (!bits[1]) bits[1] = '*';
			var param = bits.remove(bits[0]).associate(['tag', 'id', 'class', 'attribute', 'operator', 'value']);
			if (i == 0){
				if (param['id']){
					var el = this.getElementById(param['id']);
					if (!el || (param['tag'] != '*' && $(el).getTag() != param['tag'])) return false;
					filters = [el];
				} else {
					filters = $A(this.getElementsByTagName(param['tag']));
				}
			} else {
				if (param['id']) filters = $Elements(filters).filterById(param['id']);
				filters = $Elements(filters).filterByTagName(param['tag']);
			}
			if (param['class']) filters = $Elements(filters).filterByClassName(param['class']);
			if (param['attribute']) filters = $Elements(filters).filterByAttribute(param['attribute'], param['value'], param['operator']);

		}, this);
		filters.each(function(el){
			$(el);
		});
		return $Elements(filters);
	},

	getElement: function(selector){
		return this.getElementsBySelector(selector)[0];
	},

	getElementsBySelector: function(selector){
		var els = [];
		selector.split(',').each(function(sel){
			els.extend(this.getElements(sel));
		}, this);
		return $Elements(els);
	}

});

document.extend = Object.extend;

document.extend({
	getElementsByClassName: function(className){
		return document.getElements('.'+className);
	},
	getElement: Element.prototype.getElement,
	getElements: Element.prototype.getElements,
	getElementsBySelector: Element.prototype.getElementsBySelector

});

var Elements = new Class({

	action: function(actions){
		this.each(function(el){
			el = $(el);
			if (actions.initialize) actions.initialize.apply(el);
			for(var action in actions){
				var evt = false;
				if (action.test('^on[\\w]{1,}')) el[action] = actions[action];
				else if (evt = action.test('([\\w-]{1,})event$')) el.addEvent(evt[1], actions[action]);
			}
		});
	},

	//internal methods

	filterById: function(id){
		var found = [];
		this.each(function(el){
			if (el.id == id) found.push(el);
		});
		return found;
	},

	filterByClassName: function(className){
		var found = [];
		this.each(function(el){
			if ($Element(el, 'hasClass', className)) found.push(el);
		});
		return found;
	},

	filterByTagName: function(tagName){
		var found = [];
		this.each(function(el){
			found.extend($A(el.getElementsByTagName(tagName)));
		});
		return found;
	},

	filterByAttribute: function(name, value, operator){
		var found = [];
		this.each(function(el){
			var att = el.getAttribute(name);
			if(!att) return;
			if (!operator) return found.push(el);
		
			switch(operator){
				case '*=': if (att.test(value)) found.push(el); break;
				case '=': if (att == value) found.push(el); break;
				case '^=': if (att.test('^'+value)) found.push(el); break;
				case '$=': if (att.test(value+'$')) found.push(el);
			}

		});
		return found;
	}

});

new Object.Native(Elements);

ajax = Class.create();
ajax.event = ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
function emptyFunction() {}
ajax.prototype = {
    initialize: function(url, options){
        this.transport = this.getTransport();
        this.options = options;
        this.postBody = options.postBody || '';
        this.method = options.method || 'post';
        this.update = $(options.update) || null;
        this.request(url);
    },
 
    request: function(url){
        this.transport.open(this.method, url, true);
        this.transport.onreadystatechange = this.onStateChange.bind(this);
        if (this.method == 'post') {
            this.transport.setRequestHeader('Content-type', 'application/x-www-form-urlencoded;charset=GB2312','text/xml');
            if (this.transport.overrideMimeType) this.transport.setRequestHeader('Connection', 'close');
        }
        this.transport.send(this.postBody);
    },
 
    onStateChange: function(){
        var event = ajax.event[this.transport.readyState];
        if (event == 'Complete') {
            setTimeout(function(){(this.options['on' + this.transport.status] || emptyFunction)(this.transport);}.bind(this), 10);
            if (this.transport.status == 200 && this.update)
                setTimeout(function(){this.update.innerHTML = this.transport.responseText;}.bind(this), 10);
        }
        setTimeout(function(){(this.options['on' + event] || emptyFunction)(this.transport);}.bind(this), 10);
        
        if (event == 'Complete')
            this.transport.onreadystatechange = function(){};
    },
 
    getTransport: function() {
        if (window.ActiveXObject) return new ActiveXObject('Microsoft.XMLHTTP');
        else if (window.XMLHttpRequest) return new XMLHttpRequest();
        else return false;
    }
};

Object.toQueryString = function(source){
	var queryString = [];
	for (var property in source) queryString.push(encodeURIComponent(property)+'='+encodeURIComponent(source[property]));
	return queryString.join('&');
};

Element.extend({

	send: function(options){
		options = Object.extend(options, {postBody: this.toQueryString(), method: 'post'});
		return new Ajax(this.getProperty('action'), options).request();
	},

	toQueryString: function(){
		var queryString = [];
		$A(this.getElementsByTagName('*')).each(function(el){
			var name = $(el).name;
			var value = el.getValue();
			if (value && name) queryString.push(encodeURIComponent(name)+'='+encodeURIComponent(value));
		});