/**

 * Author 岳晓

 *

 * 对百度地图的事件扩展，目前扩展了fastclick和longclick,

 * 解决某些设备click不执行的问题

 * 解决长按事件在拖动、多触点依然执行的bug

 * v1.0.0

 */  

(function(){

    BMap.Map.prototype.on=function(evt,fn,option){

        var _option = {

            canBubble:true

        }  

        extend(_option,option)  

        if(!evt || !fn) return;  

        var $this = this;

        var evtList = ["longtouch","onetouch"];

        if(inArray(evt,evtList)){

            MesureEvents[evt]($this,evt,fn,option);

            $this.getContainer().querySelector("div.BMap_mask").addEventListener(evt,fn);

        }

        else{

            $this.addEventListener(evt,fn);

            /*function(e){

                if(option.canBubble){

                    e.domEvent.stopPropagation();

                }

                fn.call(this,e);

            });*/

        }

    };  

    var centerAndZoom = BMap.Map.prototype.centerAndZoom;  

    BMap.Map.prototype.centerAndZoom  = function(){  

        var $this = this;

        centerAndZoom.apply(this,arguments);

        if(!$this.hasRegistMyTouch){

            $this.on("onetouch",function(e){

                //console.log(e);

                var event = document.createEvent("MouseEvent");

                event.initEvent("fastclick",true,true);  

                event.clientX = e.clientX;

                event.clientY = e.clientY;

                event.point = e.point;

                $this.dispatchEvent(event);  

                var event = document.createEvent("MouseEvent");

                event.initEvent("click",true,true);

                event.clientX = e.clientX;

                event.clientY = e.clientY;

                $this.dispatchEvent(event);

            });

            $this.on("longtouch",function(e){

                //console.log(e);

                var event = document.createEvent("TouchEvent");

                event.initEvent("longclick",true,true);

                event.clientX = e.clientX;

                event.clientY = e.clientY;

                event.point = e.point;

                $this.dispatchEvent(event);

            });

            $this.hasRegistMyTouch = true;

        }  

    }

    var MesureEvents = {

        onetouch:function($this,evt,fn,data,option){

            var ismoved;

            var time = null;

            var touchLocation = null;

            var maxTouchesCount = 0;  

            var container = $this.getContainer();

            var mask = container.querySelector("div.BMap_mask");

            var panes = $this.getPanes();  

            $this.addEventListener("touchstart",function(e){  

                var temp = Math.max(maxTouchesCount,e.touches.length);

                if(temp==1) {

                    var touch = e.changedTouches[0];  

                    if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;  

                    maxTouchesCount = temp;  

                    touchLocation = {

                        x:touch.clientX,

                        y:touch.clientY

                    };

                    time = new Date().getTime();

                }

            });

            $this.addEventListener("touchmove",function(e){

                maxTouchesCount = Math.max(maxTouchesCount,e.touches.length);  

                if(maxTouchesCount==1) {

                    var touch = e.changedTouches[0];  

                    if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;  

                    if(Math.abs(touchLocation.x-touch.clientX)>0 && Math.abs(touchLocation.y-touch.clientY)>0){//解决部分手机对touchmove过分“敏感”的问题

                        ismoved = true;

                        //console.log("touchmove---");

                    }

                    else{

                        ismoved = false;

                    }

                }

            });

            $this.addEventListener("touchend",function(e){  

                var touches =e.touches.length;  

                if(touches==0){  

                    var touch = e.changedTouches[0];  

                    if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;  

                    var temp = maxTouchesCount;

                    var tempM = ismoved;

                    ismoved= false;

                    maxTouchesCount = 0;

                    if(temp==1 && !tempM /*&& /BMap_mask/.test(e.srcElement.className)*/ && new Date().getTime()-time<500){  

                        var event = document.createEvent("Event");

                        event.initEvent("onetouch",true,true);

                        var touch = e.changedTouches[0];  

                        event.clientX = touch.clientX;

                        event.clientY = touch.clientY;

                        event.point =calLngLat($this,event.clientX,event.clientY);

                        mask.dispatchEvent(event,fn);

                    }

                }

            });

        },

        longtouch:function($this,evt,fn,data,option){

            var ismoved;

            var time = null;

            var timeout;

            var maxTouchesCount = 0;

            var touchLocation = null;

            var container = $this.getContainer();

            var mask = container.querySelector("div.BMap_mask");

            var panes = $this.getPanes();

            $this.addEventListener("touchstart",function(e){  

                var temp = Math.max(maxTouchesCount,e.touches.length);

                if(temp==1) {

                    var touch = e.changedTouches[0];  

                    if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;  

                    maxTouchesCount = temp;  

                    touchLocation = {

                        x:touch.clientX,

                        y:touch.clientY

                    };

                    time = new Date().getTime();

                    timeout = setTimeout(function(){  

                        clearTimeout(timeout);

                        timeout = null;

                        longtouch(e);

                    },750);

                }

            });

            $this.addEventListener("touchmove",function(e){

                maxTouchesCount = Math.max(maxTouchesCount,e.touches.length);

                if(maxTouchesCount==1) {

                    var touch = e.changedTouches[0];  

                    if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;  

                    //console.log("move:" +touch.clientX +"," + touch.clientY);

                    if(Math.abs(touchLocation.x-touch.clientX)>=2 && Math.abs(touchLocation.y-touch.clientY)>2){//解决部分手机对touchmove过分“敏感”的问题

                        ismoved = true;

                        //console.log("touchmove---");

                        if(timeout){

                            clearTimeout(timeout);

                            timeout = null;

                        }

                    }

                    else{

                        ismoved = false;

                    }

                }

                else{

                    if(timeout){

                        clearTimeout(timeout);

                        timeout = null;

                    }

                }

            });  

            function longtouch(e){

                var temp = maxTouchesCount;

                var tempM = ismoved;

                ismoved= false;

                maxTouchesCount = 0;

                if(temp==1 && !tempM){  

                    var event = document.createEvent("Event");

                    event.initEvent("longtouch",true,true);

                    var touch = e.changedTouches[0];  

                    event.clientX = touch.clientX;

                    event.clientY = touch.clientY;

                    event.point =calLngLat($this,event.clientX,event.clientY);

                    $this.getContainer().querySelector("div.BMap_mask").dispatchEvent(event);  

                }

            }  

            $this.addEventListener("touchend",function(e){  

                var touches =e.touches.length;  

                if(touches==0){  

                    var touch = e.changedTouches[0];  

                    if(isAncestors(touch.target,[panes.floatPane,panes.markerMouseTarget,panes.markerPane],container)) return;  

                    maxTouchesCount = 0;

                    ismoved= false;

                }

                if(new Date().getTime()-time<1000){

                    if(timeout){

                        clearTimeout(timeout);

                        timeout = null;

                    }

                }

            });

        }

    }  

    function calLngLat($this,x,y){

        var container = $this.getContainer();

        var rect = container.getBoundingClientRect();

        var y = y - rect.top;

        var x = x - rect.left;

        var bounds = $this.getBounds();

        var lefTop = new BMap.Point(bounds.getSouthWest().lng,bounds.getNorthEast().lat);

        var lefTopPix = $this.pointToPixel(lefTop);

        var pix = new BMap.Pixel(lefTopPix.x + x,lefTopPix.y+y);

        var point = $this.pixelToPoint(pix);

        return point;

    }  

    function inArray(obj,array){

        for(x in array){

            if(obj==array[x]) return true;

        }

        return false;

    }  

    function extend(o1,o2){

        if(o1 && o2){

            for(x in o2){

                if(o2.hasOwnProperty(x) && o2[x]!=undefined){

                    o1[x] = o2[x];

                }

            }

        }

    }  

    function isAncestors(element,nodes,root){

        var p = element;

        while(p && p!=root){

            if(inArray(p,nodes)){

                return true;

            }

            p = p.parentElement;

        }

        return false;

    }  

})(BMap);