6 lines
3.5 KiB
JavaScript
6 lines
3.5 KiB
JavaScript
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/*!
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* jquery.event.drop - v 2.2
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* Copyright (c) 2010 Three Dub Media - http://threedubmedia.com
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* Open Source MIT License - http://threedubmedia.com/code/license
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*/
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;(function(d){d.fn.drop=function(i,e,h){var g=typeof i=="string"?i:"",f=d.isFunction(i)?i:d.isFunction(e)?e:null;if(g.indexOf("drop")!==0){g="drop"+g}h=(i==f?e:h)||{};return f?this.bind(g,h,f):this.trigger(g)};d.drop=function(e){e=e||{};b.multi=e.multi===true?Infinity:e.multi===false?1:!isNaN(e.multi)?e.multi:b.multi;b.delay=e.delay||b.delay;b.tolerance=d.isFunction(e.tolerance)?e.tolerance:e.tolerance===null?null:b.tolerance;b.mode=e.mode||b.mode||"intersect"};var c=d.event,a=c.special,b=d.event.special.drop={multi:1,delay:20,mode:"overlap",targets:[],datakey:"dropdata",noBubble:true,add:function(f){var e=d.data(this,b.datakey);e.related+=1},remove:function(){d.data(this,b.datakey).related-=1},setup:function(){if(d.data(this,b.datakey)){return}var e={related:0,active:[],anyactive:0,winner:0,location:{}};d.data(this,b.datakey,e);b.targets.push(this);return false},teardown:function(){var f=d.data(this,b.datakey)||{};if(f.related){return}d.removeData(this,b.datakey);var e=this;b.targets=d.grep(b.targets,function(g){return(g!==e)})},handler:function(g,e){var f,h;if(!e){return}switch(g.type){case"mousedown":case"touchstart":h=d(b.targets);if(typeof e.drop=="string"){h=h.filter(e.drop)}h.each(function(){var i=d.data(this,b.datakey);i.active=[];i.anyactive=0;i.winner=0});e.droppable=h;a.drag.hijack(g,"dropinit",e);break;case"mousemove":case"touchmove":b.event=g;if(!b.timer){b.tolerate(e)}break;case"mouseup":case"touchend":b.timer=clearTimeout(b.timer);if(e.propagates){a.drag.hijack(g,"drop",e);a.drag.hijack(g,"dropend",e)}break}},locate:function(k,h){var l=d.data(k,b.datakey),g=d(k),i=g.offset()||{},e=g.outerHeight(),j=g.outerWidth(),f={elem:k,width:j,height:e,top:i.top,left:i.left,right:i.left+j,bottom:i.top+e};if(l){l.location=f;l.index=h;l.elem=k}return f},contains:function(e,f){return((f[0]||f.left)>=e.left&&(f[0]||f.right)<=e.right&&(f[1]||f.top)>=e.top&&(f[1]||f.bottom)<=e.bottom)},modes:{intersect:function(f,e,g){return this.contains(g,[f.pageX,f.pageY])?1000000000:this.modes.overlap.apply(this,arguments)},overlap:function(f,e,g){return Math.max(0,Math.min(g.bottom,e.bottom)-Math.max(g.top,e.top))*Math.max(0,Math.min(g.right,e.right)-Math.max(g.left,e.left))},fit:function(f,e,g){return this.contains(g,e)?1:0},middle:function(f,e,g){return this.contains(g,[e.left+e.width*0.5,e.top+e.height*0.5])?1:0}},sort:function(f,e){return(e.winner-f.winner)||(f.index-e.index)},tolerate:function(q){var k,e,n,j,l,m,g,p=0,f,h=q.interactions.length,r=[b.event.pageX,b.event.pageY],o=b.tolerance||b.modes[b.mode];do{if(f=q.interactions[p]){if(!f){return}f.drop=[];l=[];m=f.droppable.length;if(o){n=b.locate(f.proxy)}k=0;do{if(g=f.droppable[k]){j=d.data(g,b.datakey);e=j.location;if(!e){continue}j.winner=o?o.call(b,b.event,n,e):b.contains(e,r)?1:0;l.push(j)}}while(++k<m);l.sort(b.sort);k=0;do{if(j=l[k]){if(j.winner&&f.drop.length<b.multi){if(!j.active[p]&&!j.anyactive){if(a.drag.hijack(b.event,"dropstart",q,p,j.elem)[0]!==false){j.active[p]=1;j.anyactive+=1}else{j.winner=0}}if(j.winner){f.drop.push(j.elem)}}else{if(j.active[p]&&j.anyactive==1){a.drag.hijack(b.event,"dropend",q,p,j.elem);j.active[p]=0;j.anyactive-=1}}}}while(++k<m)}}while(++p<h);if(b.last&&r[0]==b.last.pageX&&r[1]==b.last.pageY){delete b.timer}else{b.timer=setTimeout(function(){b.tolerate(q)},b.delay)}b.last=b.event}};a.dropinit=a.dropstart=a.dropend=b})(jQuery);
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