/*
 * jQuery Impromptu
 * By: Trent Richardson [http://trentrichardson.com]
 * Version 1.5
 * Last Modified: 3/31/2008
 *
 * Copyright 2008 Trent Richardson
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
jQuery.extend({
        ImpromptuDefaults: {
                prefix:'cleanblue', //prefix:'jqi',
                buttons:{ Ok:true },
                loaded:function(){},
                submit:function(){return true;},
                callback:function(){},
                opacity:0.6,
                zIndex: 999,
                overlayspeed:'slow',
                promptspeed:'fast',
                show:'show',
                focus:0,
                useiframe:false,
                titleText:''
        },
        SetImpromptuDefaults: function(o){
                jQuery.ImpromptuDefaults = jQuery.extend({},jQuery.ImpromptuDefaults,o);
        },
        prompt: function(m,o){
                o = jQuery.extend({},jQuery.ImpromptuDefaults,o);

                var ie6 = (jQuery.browser.msie && jQuery.browser.version < 7);
                var b = jQuery(document.body);
                var w = jQuery(window);



                var msgbox = '<div class="'+ o.prefix +'box" id="'+ o.prefix +'box">';
                if(o.useiframe && ((jQuery.browser.msie && jQuery('object, applet').length > 0) || ie6))//if you want to use the iframe uncomment these 3 lines
                        msgbox += '<iframe src="javascript:;" class="'+ o.prefix +'fade" id="'+ o.prefix +'fade"></iframe>';
                else{
                        if(ie6) $('select').css('visibility','hidden');
                        msgbox +='<div class="'+ o.prefix +'fade" id="'+ o.prefix +'fade"></div>';
                }
                msgbox += '<div class="'+ o.prefix +'" id="'+ o.prefix +'"><div class="'+ o.prefix +'container">'+
                '<div class="'+ o.prefix +'title">'+o.titleText+'</div>'+
                '<div class="'+ o.prefix +'message">'+ m +'</div><div class="'+ o.prefix +'buttons" id="'+ o.prefix +'buttons">';
                jQuery.each(o.buttons,function(k,v){ msgbox += '<button name="'+ o.prefix +'button'+ k +'" id="'+ o.prefix +'button'+ k +'" value="'+ v +'">'+ k +'</button>'}) ;
                msgbox += '</div></div></div></div>';

                var jqib =b.append(msgbox).children('#'+ o.prefix +'box');
                var jqi = jqib.children('#'+ o.prefix);
                var jqif = jqib.children('#'+ o.prefix +'fade');

                var getWindowScrollOffset = function(){
                        return (document.documentElement.scrollTop || document.body.scrollTop) + 'px';
                };

                var getWindowSize = function(){
                        var size = {
                                width: window.innerWidth || (window.document.documentElement.clientWidth || window.document.body.clientWidth),
                                height: window.innerHeight || (window.document.documentElement.clientHeight || window.document.body.clientHeight)
                        };
                        return size;
                };

                var ie6scroll = function(){
                        jqib.css({ top: getWindowScrollOffset() });
                };

                var flashPrompt = function(){
                        var i = 0;
                        jqib.addClass(o.prefix +'warning');
                        var intervalid = setInterval(function(){
                                jqib.toggleClass(o.prefix +'warning');
                                if(i++ > 1){
                                        clearInterval(intervalid);
                                        jqib.removeClass(o.prefix +'warning');
                                }
                        }, 100);
                };


                var escapeKeyClosePrompt = function(e){
                        var kC = (window.event) ? event.keyCode : e.keyCode; // MSIE or Firefox?
                        var Esc = (window.event) ? 27 : e.DOM_VK_ESCAPE; // MSIE : Firefox
                        if(kC==Esc) removePrompt();
                };

                var positionPrompt = function(){
                        var wsize = getWindowSize();
                        jqib.css({ position: (ie6)? "absolute" : "fixed", height: wsize.height, width: "100%", top: (ie6)? getWindowScrollOffset():0, left: 0, right: 0, bottom: 0 });
                        jqif.css({ position: "absolute", height: wsize.height, width: "100%", top: 0, left: 0, right: 0, bottom: 0 });
                        jqi.css({ position: "absolute", top: "100px", left: "50%", marginLeft: ((((jqi.css("paddingLeft").split("px")[0]*1) + jqi.width())/2)*-1) });
                };

                var stylePrompt = function(){
                        jqif.css({ zIndex: o.zIndex, display: "none", opacity: o.opacity });
                        jqi.css({ zIndex: o.zIndex+1, display: "none" });
                }

                var removePrompt = function(callCallback, clicked, msg){
                        jqi.remove();
                        if(ie6)b.unbind('scroll',ie6scroll);//ie6, remove the scroll event
                        w.unbind('resize',positionPrompt);
                        jqif.fadeOut(o.overlayspeed,function(){
                                jqif.unbind('click',flashPrompt);
                                jqif.remove();
                                if(callCallback) o.callback(clicked,msg);
                                jqib.unbind('keypress',escapeKeyClosePrompt);
                                jqib.remove();
                                if(ie6 && !o.useiframe) $('select').css('visibility','visible');
                        });
                }

                positionPrompt();
                stylePrompt();

                //Events
                jQuery('#'+ o.prefix +'buttons').children('button').click(function(){
                        var msg = jqi.children('.'+ o.prefix +'container').children('.'+ o.prefix +'message');
                        var clicked = o.buttons[jQuery(this).text()];
                        if(o.submit(clicked,msg))
                                removePrompt(true,clicked,msg);
                });
                if(ie6) w.scroll(ie6scroll);//ie6, add a scroll event to fix position:fixed
                jqif.click(flashPrompt);
                w.resize(positionPrompt);
                jqib.keypress(escapeKeyClosePrompt);
                //jqi.find('.'+ o.prefix +'close').click(removePrompt);

                //Show it
                jqif.fadeIn(o.overlayspeed);
                jqi[o.show](o.promptspeed,o.loaded);
                jqi.find('#'+ o.prefix +'buttons button:eq('+ o.focus +')').focus();//focus the default button
                return jqib;
        }
});