// Simple Set Clipboard System
// Author: Joseph Huckaby

var ZeroClipboard = {
	
	version: "1.0.7",
	clients: {}, // registered upload clients on page, indexed by id
	moviePath: 'http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf', //http://skin.ganjinpai.com/script/plugins/ URL to movie
	nextId: 1, // ID of next movie
	
	$: function(thingy) {
		// simple DOM lookup utility function
		if (typeof(thingy) == 'string') thingy = document.getElementById(thingy);
		if (true || !thingy.addClass) {
			// extend element with a few useful methods
			thingy.hide = function() { this.style.display = 'none'; };
			thingy.show = function() { this.style.display = ''; };
			thingy.addClass = function(name) { this.removeClass(name); this.className += ' ' + name; };
			thingy.removeClass = function(name) {
				var classes = this.className.split(/\s+/);
				var idx = -1;
				for (var k = 0; k < classes.length; k++) {
					if (classes[k] == name) { idx = k; k = classes.length; }
				}
				if (idx > -1) {
					classes.splice( idx, 1 );
					this.className = classes.join(' ');
				}
				return this;
			};
			thingy.hasClass = function(name) {
				return !!this.className.match( new RegExp("\\s*" + name + "\\s*") );
			};
		}
		return thingy;
	},
	
	setMoviePath: function(path) {
		// set path to ZeroClipboard.swf
		this.moviePath = path;
	},
	
	dispatch: function(id, eventName, args) {
		// receive event from flash movie, send to client		
		var client = this.clients[id];
		if (client) {
			client.receiveEvent(eventName, args);
		}
	},
	
	register: function(id, client) {
		// register new client to receive events
		this.clients[id] = client;
	},
	
	getDOMObjectPosition: function(obj, stopObj) {
		// get absolute coordinates for dom element
		var info = {
			left: 0, 
			top: 0, 
			width: obj.width ? obj.width : obj.offsetWidth, 
			height: obj.height ? obj.height : obj.offsetHeight
		};

		while (obj && (obj != stopObj)) {
			info.left += obj.offsetLeft;
			info.top += obj.offsetTop;
			obj = obj.offsetParent;
		}

		return info;
	},
	
	Client: function(elem) {
		// constructor for new simple upload client
		this.handlers = {};
		
		// unique ID
		this.id = ZeroClipboard.nextId++;
		this.movieId = 'ZeroClipboardMovie_' + this.id;
		
		// register client with singleton to receive flash events
		ZeroClipboard.register(this.id, this);
		
		// create movie
		if (elem) this.glue(elem);
	}
};

ZeroClipboard.Client.prototype = {

    id: 0, // unique ID for us
    ready: false, // whether movie is ready to receive events or not
    movie: null, // reference to movie object
    clipText: '', // text to copy to clipboard
    handCursorEnabled: true, // whether to show hand cursor, or default pointer cursor
    cssEffects: true, // enable CSS mouse effects on dom container
    handlers: null, // user event handlers

    glue: function (elem, appendElem, stylesToAdd) {
        // glue to DOM element
        // elem can be ID or actual DOM element object
        this.domElement = ZeroClipboard.$(elem);

        // float just above object, or zIndex 99 if dom element isn't set
        var zIndex = 99;
        if (this.domElement.style.zIndex) {
            zIndex = parseInt(this.domElement.style.zIndex, 10) + 1;
        }

        if (typeof (appendElem) == 'string') {
            appendElem = ZeroClipboard.$(appendElem);
        }
        else if (typeof (appendElem) == 'undefined') {
            appendElem = document.getElementsByTagName('body')[0];
        }

        // find X/Y position of domElement
        var box = ZeroClipboard.getDOMObjectPosition(this.domElement, appendElem);

        // create floating DIV above element
        this.div = document.createElement('div');
        var style = this.div.style;
        //this.div.id = 'flv_box';
        style.position = 'absolute';
        style.left = '' + box.left + 'px';
        style.top = '' + box.top + 'px';
        style.width = '' + box.width + 'px';
        style.height = '' + box.height + 'px';
        style.zIndex = zIndex;

        if (typeof (stylesToAdd) == 'object') {
            for (addedStyle in stylesToAdd) {
                style[addedStyle] = stylesToAdd[addedStyle];
            }
        }

        //style.backgroundColor = '#f00'; // debug

        appendElem.appendChild(this.div);

        this.div.innerHTML = this.getHTML(box.width, box.height);
    },

    getHTML: function (width, height) {
        // return HTML for movie
        var html = '';
        var flashvars = 'id=' + this.id +
			'&width=' + width +
			'&height=' + height;

        if (navigator.userAgent.match(/MSIE/)) {
            // IE gets an OBJECT tag
            var protocol = location.href.match(/^https/i) ? 'https://' : 'http://';
            html += '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="' + protocol + 'download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="' + width + '" height="' + height + '" id="' + this.movieId + '" align="middle"><param name="allowScriptAccess" value="always" /><param name="allowFullScreen" value="false" /><param name="movie" value="' + ZeroClipboard.moviePath + '" /><param name="loop" value="false" /><param name="menu" value="false" /><param name="quality" value="best" /><param name="bgcolor" value="#ffffff" /><param name="flashvars" value="' + flashvars + '"/><param name="wmode" value="transparent"/></object>';
        }
        else {
            // all other browsers get an EMBED tag
            html += '<embed id="' + this.movieId + '" src="' + ZeroClipboard.moviePath + '" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="' + width + '" height="' + height + '" name="' + this.movieId + '" align="middle" allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="' + flashvars + '" wmode="transparent" />';
        }
        return html;
    },

    hide: function () {
        // temporarily hide floater offscreen
        if (this.div) {
            this.div.style.left = '-2000px';
        }
    },

    show: function () {
        // show ourselves after a call to hide()
        this.reposition();
    },

    destroy: function () {
        // destroy control and floater
        if (this.domElement && this.div) {
            this.hide();
            this.div.innerHTML = '';

            var body = document.getElementsByTagName('body')[0];
            try { body.removeChild(this.div); } catch (e) { ; }

            this.domElement = null;
            this.div = null;
        }
    },

    reposition: function (elem) {
        // reposition our floating div, optionally to new container
        // warning: container CANNOT change size, only position
        if (elem) {
            this.domElement = ZeroClipboard.$(elem);
            if (!this.domElement) this.hide();
        }

        if (this.domElement && this.div) {
            var box = ZeroClipboard.getDOMObjectPosition(this.domElement);
            var style = this.div.style;
            style.left = '' + box.left + 'px';
            style.top = '' + box.top + 'px';
        }
    },

    setText: function (newText) {
        // set text to be copied to clipboard
        this.clipText = newText;
        if (this.ready) this.movie.setText(newText);
    },

    addEventListener: function (eventName, func) {
        // add user event listener for event
        // event types: load, queueStart, fileStart, fileComplete, queueComplete, progress, error, cancel
        eventName = eventName.toString().toLowerCase().replace(/^on/, '');
        if (!this.handlers[eventName]) this.handlers[eventName] = [];
        this.handlers[eventName].push(func);
    },

    setHandCursor: function (enabled) {
        // enable hand cursor (true), or default arrow cursor (false)
        this.handCursorEnabled = enabled;
        if (this.ready) this.movie.setHandCursor(enabled);
    },

    setCSSEffects: function (enabled) {
        // enable or disable CSS effects on DOM container
        this.cssEffects = !!enabled;
    },

    receiveEvent: function (eventName, args) {
        // receive event from flash
        eventName = eventName.toString().toLowerCase().replace(/^on/, '');

        // special behavior for certain events
        switch (eventName) {
            case 'load':
                // movie claims it is ready, but in IE this isn't always the case...
                // bug fix: Cannot extend EMBED DOM elements in Firefox, must use traditional function
                this.movie = document.getElementById(this.movieId);
                if (!this.movie) {
                    var self = this;
                    setTimeout(function () { self.receiveEvent('load', null); }, 1);
                    return;
                }

                // firefox on pc needs a "kick" in order to set these in certain cases
                if (!this.ready && navigator.userAgent.match(/Firefox/) && navigator.userAgent.match(/Windows/)) {
                    var self = this;
                    setTimeout(function () { self.receiveEvent('load', null); }, 100);
                    this.ready = true;
                    return;
                }

                this.ready = true;
                this.movie.setText(this.clipText);
                this.movie.setHandCursor(this.handCursorEnabled);
                break;

            case 'mouseover':
                if (this.domElement && this.cssEffects) {
                    this.domElement.addClass('hover');
                    if (this.recoverActive) this.domElement.addClass('active');
                }
                break;

            case 'mouseout':
                if (this.domElement && this.cssEffects) {
                    this.recoverActive = false;
                    if (this.domElement.hasClass('active')) {
                        this.domElement.removeClass('active');
                        this.recoverActive = true;
                    }
                    this.domElement.removeClass('hover');
                }
                break;

            case 'mousedown':
                if (this.domElement && this.cssEffects) {
                    this.domElement.addClass('active');
                }
                break;

            case 'mouseup':
                if (this.domElement && this.cssEffects) {
                    this.domElement.removeClass('active');
                    this.recoverActive = false;
                }
                break;
        } // switch eventName

        if (this.handlers[eventName]) {
            for (var idx = 0, len = this.handlers[eventName].length; idx < len; idx++) {
                var func = this.handlers[eventName][idx];

                if (typeof (func) == 'function') {
                    // actual function reference
                    func(this, args);
                }
                else if ((typeof (func) == 'object') && (func.length == 2)) {
                    // PHP style object + method, i.e. [myObject, 'myMethod']
                    func[0][func[1]](this, args);
                }
                else if (typeof (func) == 'string') {
                    // name of function
                    window[func](this, args);
                }
            } // foreach event handler defined
        } // user defined handler for event
    }

};
