// github.com/jonrohan/ZeroClipboard // Simple Set Clipboard System // Author: Joseph Huckaby

var ZeroClipboard = {

version: "1.0.7",
clients: {}, // registered upload clients on page, indexed by id
moviePath: 'ZeroClipboard.swf', // 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 (!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;
    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
}

};