wp-includes/js/jquery/ui.draggable.js

   1 /*
   2  * jQuery UI Draggable 1.7.1
   3  *
   4  * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
   5  * Dual licensed under the MIT (MIT-LICENSE.txt)
   6  * and GPL (GPL-LICENSE.txt) licenses.
   7  *
   8  * http://docs.jquery.com/UI/Draggables
   9  *
  10  * Depends:
  11  *      ui.core.js
  12  */
  13 (function(a){a.widget("ui.draggable",a.extend({},a.ui.mouse,{_init:function(){if(this.options.helper=="original"&&!(/^(?:r|a|f)/).test(this.element.css("position"))){this.element[0].style.position="relative"}(this.options.addClasses&&this.element.addClass("ui-draggable"));(this.options.disabled&&this.element.addClass("ui-draggable-disabled"));this._mouseInit()},destroy:function(){if(!this.element.data("draggable")){return}this.element.removeData("draggable").unbind(".draggable").removeClass("ui-draggable ui-draggable-dragging ui-draggable-disabled");this._mouseDestroy()},_mouseCapture:function(b){var c=this.options;if(this.helper||c.disabled||a(b.target).is(".ui-resizable-handle")){return false}this.handle=this._getHandle(b);if(!this.handle){return false}return true},_mouseStart:function(b){var c=this.options;this.helper=this._createHelper(b);this._cacheHelperProportions();if(a.ui.ddmanager){a.ui.ddmanager.current=this}this._cacheMargins();this.cssPosition=this.helper.css("position");this.scrollParent=this.helper.scrollParent();this.offset=this.element.offset();this.offset={top:this.offset.top-this.margins.top,left:this.offset.left-this.margins.left};a.extend(this.offset,{click:{left:b.pageX-this.offset.left,top:b.pageY-this.offset.top},parent:this._getParentOffset(),relative:this._getRelativeOffset()});this.originalPosition=this._generatePosition(b);this.originalPageX=b.pageX;this.originalPageY=b.pageY;if(c.cursorAt){this._adjustOffsetFromHelper(c.cursorAt)}if(c.containment){this._setContainment()}this._trigger("start",b);this._cacheHelperProportions();if(a.ui.ddmanager&&!c.dropBehaviour){a.ui.ddmanager.prepareOffsets(this,b)}this.helper.addClass("ui-draggable-dragging");this._mouseDrag(b,true);return true},_mouseDrag:function(b,d){this.position=this._generatePosition(b);this.positionAbs=this._convertPositionTo("absolute");if(!d){var c=this._uiHash();this._trigger("drag",b,c);this.position=c.position}if(!this.options.axis||this.options.axis!="y"){this.helper[0].style.left=this.position.left+"px"}if(!this.options.axis||this.options.axis!="x"){this.helper[0].style.top=this.position.top+"px"}if(a.ui.ddmanager){a.ui.ddmanager.drag(this,b)}return false},_mouseStop:function(c){var d=false;if(a.ui.ddmanager&&!this.options.dropBehaviour){d=a.ui.ddmanager.drop(this,c)}if(this.dropped){d=this.dropped;this.dropped=false}if((this.options.revert=="invalid"&&!d)||(this.options.revert=="valid"&&d)||this.options.revert===true||(a.isFunction(this.options.revert)&&this.options.revert.call(this.element,d))){var b=this;a(this.helper).animate(this.originalPosition,parseInt(this.options.revertDuration,10),function(){b._trigger("stop",c);b._clear()})}else{this._trigger("stop",c);this._clear()}return false},_getHandle:function(b){var c=!this.options.handle||!a(this.options.handle,this.element).length?true:false;a(this.options.handle,this.element).find("*").andSelf().each(function(){if(this==b.target){c=true}});return c},_createHelper:function(c){var d=this.options;var b=a.isFunction(d.helper)?a(d.helper.apply(this.element[0],[c])):(d.helper=="clone"?this.element.clone():this.element);if(!b.parents("body").length){b.appendTo((d.appendTo=="parent"?this.element[0].parentNode:d.appendTo))}if(b[0]!=this.element[0]&&!(/(fixed|absolute)/).test(b.css("position"))){b.css("position","absolute")}return b},_adjustOffsetFromHelper:function(b){if(b.left!=undefined){this.offset.click.left=b.left+this.margins.left}if(b.right!=undefined){this.offset.click.left=this.helperProportions.width-b.right+this.margins.left}if(b.top!=undefined){this.offset.click.top=b.top+this.margins.top}if(b.bottom!=undefined){this.offset.click.top=this.helperProportions.height-b.bottom+this.margins.top}},_getParentOffset:function(){this.offsetParent=this.helper.offsetParent();var b=this.offsetParent.offset();if(this.cssPosition=="absolute"&&this.scrollParent[0]!=document&&a.ui.contains(this.scrollParent[0],this.offsetParent[0])){b.left+=this.scrollParent.scrollLeft();b.top+=this.scrollParent.scrollTop()}if((this.offsetParent[0]==document.body)||(this.offsetParent[0].tagName&&this.offsetParent[0].tagName.toLowerCase()=="html"&&a.browser.msie)){b={top:0,left:0}}return{top:b.top+(parseInt(this.offsetParent.css("borderTopWidth"),10)||0),left:b.left+(parseInt(this.offsetParent.css("borderLeftWidth"),10)||0)}},_getRelativeOffset:function(){if(this.cssPosition=="relative"){var b=this.element.position();return{top:b.top-(parseInt(this.helper.css("top"),10)||0)+this.scrollParent.scrollTop(),left:b.left-(parseInt(this.helper.css("left"),10)||0)+this.scrollParent.scrollLeft()}}else{return{top:0,left:0}}},_cacheMargins:function(){this.margins={left:(parseInt(this.element.css("marginLeft"),10)||0),top:(parseInt(this.element.css("marginTop"),10)||0)}},_cacheHelperProportions:function(){this.helperProportions={width:this.helper.outerWidth(),height:this.helper.outerHeight()}},_setContainment:function(){var e=this.options;if(e.containment=="parent"){e.containment=this.helper[0].parentNode}if(e.containment=="document"||e.containment=="window"){this.containment=[0-this.offset.relative.left-this.offset.parent.left,0-this.offset.relative.top-this.offset.parent.top,a(e.containment=="document"?document:window).width()-this.helperProportions.width-this.margins.left,(a(e.containment=="document"?document:window).height()||document.body.parentNode.scrollHeight)-this.helperProportions.height-this.margins.top]}if(!(/^(document|window|parent)$/).test(e.containment)&&e.containment.constructor!=Array){var c=a(e.containment)[0];if(!c){return}var d=a(e.containment).offset();var b=(a(c).css("overflow")!="hidden");this.containment=[d.left+(parseInt(a(c).css("borderLeftWidth"),10)||0)+(parseInt(a(c).css("paddingLeft"),10)||0)-this.margins.left,d.top+(parseInt(a(c).css("borderTopWidth"),10)||0)+(parseInt(a(c).css("paddingTop"),10)||0)-this.margins.top,d.left+(b?Math.max(c.scrollWidth,c.offsetWidth):c.offsetWidth)-(parseInt(a(c).css("borderLeftWidth"),10)||0)-(parseInt(a(c).css("paddingRight"),10)||0)-this.helperProportions.width-this.margins.left,d.top+(b?Math.max(c.scrollHeight,c.offsetHeight):c.offsetHeight)-(parseInt(a(c).css("borderTopWidth"),10)||0)-(parseInt(a(c).css("paddingBottom"),10)||0)-this.helperProportions.height-this.margins.top]}else{if(e.containment.constructor==Array){this.containment=e.containment}}},_convertPositionTo:function(f,h){if(!h){h=this.position}var c=f=="absolute"?1:-1;var e=this.options,b=this.cssPosition=="absolute"&&!(this.scrollParent[0]!=document&&a.ui.contains(this.scrollParent[0],this.offsetParent[0]))?this.offsetParent:this.scrollParent,g=(/(html|body)/i).test(b[0].tagName);return{top:(h.top+this.offset.relative.top*c+this.offset.parent.top*c-(a.browser.safari&&this.cssPosition=="fixed"?0:(this.cssPosition=="fixed"?-this.scrollParent.scrollTop():(g?0:b.scrollTop()))*c)),left:(h.left+this.offset.relative.left*c+this.offset.parent.left*c-(a.browser.safari&&this.cssPosition=="fixed"?0:(this.cssPosition=="fixed"?-this.scrollParent.scrollLeft():g?0:b.scrollLeft())*c))}},_generatePosition:function(e){var h=this.options,b=this.cssPosition=="absolute"&&!(this.scrollParent[0]!=document&&a.ui.contains(this.scrollParent[0],this.offsetParent[0]))?this.offsetParent:this.scrollParent,i=(/(html|body)/i).test(b[0].tagName);if(this.cssPosition=="relative"&&!(this.scrollParent[0]!=document&&this.scrollParent[0]!=this.offsetParent[0])){this.offset.relative=this._getRelativeOffset()}var d=e.pageX;var c=e.pageY;if(this.originalPosition){if(this.containment){if(e.pageX-this.offset.click.left<this.containment[0]){d=this.containment[0]+this.offset.click.left}if(e.pageY-this.offset.click.top<this.containment[1]){c=this.containment[1]+this.offset.click.top}if(e.pageX-this.offset.click.left>this.containment[2]){d=this.containment[2]+this.offset.click.left}if(e.pageY-this.offset.click.top>this.containment[3]){c=this.containment[3]+this.offset.click.top}}if(h.grid){var g=this.originalPageY+Math.round((c-this.originalPageY)/h.grid[1])*h.grid[1];c=this.containment?(!(g-this.offset.click.top<this.containment[1]||g-this.offset.click.top>this.containment[3])?g:(!(g-this.offset.click.top<this.containment[1])?g-h.grid[1]:g+h.grid[1])):g;var f=this.originalPageX+Math.round((d-this.originalPageX)/h.grid[0])*h.grid[0];d=this.containment?(!(f-this.offset.click.left<this.containment[0]||f-this.offset.click.left>this.containment[2])?f:(!(f-this.offset.click.left<this.containment[0])?f-h.grid[0]:f+h.grid[0])):f}}return{top:(c-this.offset.click.top-this.offset.relative.top-this.offset.parent.top+(a.browser.safari&&this.cssPosition=="fixed"?0:(this.cssPosition=="fixed"?-this.scrollParent.scrollTop():(i?0:b.scrollTop())))),left:(d-this.offset.click.left-this.offset.relative.left-this.offset.parent.left+(a.browser.safari&&this.cssPosition=="fixed"?0:(this.cssPosition=="fixed"?-this.scrollParent.scrollLeft():i?0:b.scrollLeft())))}},_clear:function(){this.helper.removeClass("ui-draggable-dragging");if(this.helper[0]!=this.element[0]&&!this.cancelHelperRemoval){this.helper.remove()}this.helper=null;this.cancelHelperRemoval=false},_trigger:function(b,c,d){d=d||this._uiHash();a.ui.plugin.call(this,b,[c,d]);if(b=="drag"){this.positionAbs=this._convertPositionTo("absolute")}return a.widget.prototype._trigger.call(this,b,c,d)},plugins:{},_uiHash:function(b){return{helper:this.helper,position:this.position,absolutePosition:this.positionAbs,offset:this.positionAbs}}}));a.extend(a.ui.draggable,{version:"1.7.1",eventPrefix:"drag",defaults:{addClasses:true,appendTo:"parent",axis:false,cancel:":input,option",connectToSortable:false,containment:false,cursor:"auto",cursorAt:false,delay:0,distance:1,grid:false,handle:false,helper:"original",iframeFix:false,opacity:false,refreshPositions:false,revert:false,revertDuration:500,scope:"default",scroll:true,scrollSensitivity:20,scrollSpeed:20,snap:false,snapMode:"both",snapTolerance:20,stack:false,zIndex:false}});a.ui.plugin.add("draggable","connectToSortable",{start:function(c,e){var d=a(this).data("draggable"),f=d.options,b=a.extend({},e,{item:d.element});d.sortables=[];a(f.connectToSortable).each(function(){var g=a.data(this,"sortable");if(g&&!g.options.disabled){d.sortables.push({instance:g,shouldRevert:g.options.revert});g._refreshItems();g._trigger("activate",c,b)}})},stop:function(c,e){var d=a(this).data("draggable"),b=a.extend({},e,{item:d.element});a.each(d.sortables,function(){if(this.instance.isOver){this.instance.isOver=0;d.cancelHelperRemoval=true;this.instance.cancelHelperRemoval=false;if(this.shouldRevert){this.instance.options.revert=true}this.instance._mouseStop(c);this.instance.options.helper=this.instance.options._helper;if(d.options.helper=="original"){this.instance.currentItem.css({top:"auto",left:"auto"})}}else{this.instance.cancelHelperRemoval=false;this.instance._trigger("deactivate",c,b)}})},drag:function(c,f){var e=a(this).data("draggable"),b=this;var d=function(i){var n=this.offset.click.top,m=this.offset.click.left;var g=this.positionAbs.top,k=this.positionAbs.left;var j=i.height,l=i.width;var p=i.top,h=i.left;return a.ui.isOver(g+n,k+m,p,h,j,l)};a.each(e.sortables,function(g){this.instance.positionAbs=e.positionAbs;this.instance.helperProportions=e.helperProportions;this.instance.offset.click=e.offset.click;if(this.instance._intersectsWith(this.instance.containerCache)){if(!this.instance.isOver){this.instance.isOver=1;this.instance.currentItem=a(b).clone().appendTo(this.instance.element).data("sortable-item",true);this.instance.options._helper=this.instance.options.helper;this.instance.options.helper=function(){return f.helper[0]};c.target=this.instance.currentItem[0];this.instance._mouseCapture(c,true);this.instance._mouseStart(c,true,true);this.instance.offset.click.top=e.offset.click.top;this.instance.offset.click.left=e.offset.click.left;this.instance.offset.parent.left-=e.offset.parent.left-this.instance.offset.parent.left;this.instance.offset.parent.top-=e.offset.parent.top-this.instance.offset.parent.top;e._trigger("toSortable",c);e.dropped=this.instance.element;e.currentItem=e.element;this.instance.fromOutside=e}if(this.instance.currentItem){this.instance._mouseDrag(c)}}else{if(this.instance.isOver){this.instance.isOver=0;this.instance.cancelHelperRemoval=true;this.instance.options.revert=false;this.instance._trigger("out",c,this.instance._uiHash(this.instance));this.instance._mouseStop(c,true);this.instance.options.helper=this.instance.options._helper;this.instance.currentItem.remove();if(this.instance.placeholder){this.instance.placeholder.remove()}e._trigger("fromSortable",c);e.dropped=false}}})}});a.ui.plugin.add("draggable","cursor",{start:function(c,d){var b=a("body"),e=a(this).data("draggable").options;if(b.css("cursor")){e._cursor=b.css("cursor")}b.css("cursor",e.cursor)},stop:function(b,c){var d=a(this).data("draggable").options;if(d._cursor){a("body").css("cursor",d._cursor)}}});a.ui.plugin.add("draggable","iframeFix",{start:function(b,c){var d=a(this).data("draggable").options;a(d.iframeFix===true?"iframe":d.iframeFix).each(function(){a('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>').css({width:this.offsetWidth+"px",height:this.offsetHeight+"px",position:"absolute",opacity:"0.001",zIndex:1000}).css(a(this).offset()).appendTo("body")})},stop:function(b,c){a("div.ui-draggable-iframeFix").each(function(){this.parentNode.removeChild(this)})}});a.ui.plugin.add("draggable","opacity",{start:function(c,d){var b=a(d.helper),e=a(this).data("draggable").options;if(b.css("opacity")){e._opacity=b.css("opacity")}b.css("opacity",e.opacity)},stop:function(b,c){var d=a(this).data("draggable").options;if(d._opacity){a(c.helper).css("opacity",d._opacity)}}});a.ui.plugin.add("draggable","scroll",{start:function(c,d){var b=a(this).data("draggable");if(b.scrollParent[0]!=document&&b.scrollParent[0].tagName!="HTML"){b.overflowOffset=b.scrollParent.offset()}},drag:function(d,e){var c=a(this).data("draggable"),f=c.options,b=false;if(c.scrollParent[0]!=document&&c.scrollParent[0].tagName!="HTML"){if(!f.axis||f.axis!="x"){if((c.overflowOffset.top+c.scrollParent[0].offsetHeight)-d.pageY<f.scrollSensitivity){c.scrollParent[0].scrollTop=b=c.scrollParent[0].scrollTop+f.scrollSpeed}else{if(d.pageY-c.overflowOffset.top<f.scrollSensitivity){c.scrollParent[0].scrollTop=b=c.scrollParent[0].scrollTop-f.scrollSpeed}}}if(!f.axis||f.axis!="y"){if((c.overflowOffset.left+c.scrollParent[0].offsetWidth)-d.pageX<f.scrollSensitivity){c.scrollParent[0].scrollLeft=b=c.scrollParent[0].scrollLeft+f.scrollSpeed}else{if(d.pageX-c.overflowOffset.left<f.scrollSensitivity){c.scrollParent[0].scrollLeft=b=c.scrollParent[0].scrollLeft-f.scrollSpeed}}}}else{if(!f.axis||f.axis!="x"){if(d.pageY-a(document).scrollTop()<f.scrollSensitivity){b=a(document).scrollTop(a(document).scrollTop()-f.scrollSpeed)}else{if(a(window).height()-(d.pageY-a(document).scrollTop())<f.scrollSensitivity){b=a(document).scrollTop(a(document).scrollTop()+f.scrollSpeed)}}}if(!f.axis||f.axis!="y"){if(d.pageX-a(document).scrollLeft()<f.scrollSensitivity){b=a(document).scrollLeft(a(document).scrollLeft()-f.scrollSpeed)}else{if(a(window).width()-(d.pageX-a(document).scrollLeft())<f.scrollSensitivity){b=a(document).scrollLeft(a(document).scrollLeft()+f.scrollSpeed)}}}}if(b!==false&&a.ui.ddmanager&&!f.dropBehaviour){a.ui.ddmanager.prepareOffsets(c,d)}}});a.ui.plugin.add("draggable","snap",{start:function(c,d){var b=a(this).data("draggable"),e=b.options;b.snapElements=[];a(e.snap.constructor!=String?(e.snap.items||":data(draggable)"):e.snap).each(function(){var g=a(this);var f=g.offset();if(this!=b.element[0]){b.snapElements.push({item:this,width:g.outerWidth(),height:g.outerHeight(),top:f.top,left:f.left})}})},drag:function(u,p){var g=a(this).data("draggable"),q=g.options;var y=q.snapTolerance;var x=p.offset.left,w=x+g.helperProportions.width,f=p.offset.top,e=f+g.helperProportions.height;for(var v=g.snapElements.length-1;v>=0;v--){var s=g.snapElements[v].left,n=s+g.snapElements[v].width,m=g.snapElements[v].top,A=m+g.snapElements[v].height;if(!((s-y<x&&x<n+y&&m-y<f&&f<A+y)||(s-y<x&&x<n+y&&m-y<e&&e<A+y)||(s-y<w&&w<n+y&&m-y<f&&f<A+y)||(s-y<w&&w<n+y&&m-y<e&&e<A+y))){if(g.snapElements[v].snapping){(g.options.snap.release&&g.options.snap.release.call(g.element,u,a.extend(g._uiHash(),{snapItem:g.snapElements[v].item})))}g.snapElements[v].snapping=false;continue}if(q.snapMode!="inner"){var c=Math.abs(m-e)<=y;var z=Math.abs(A-f)<=y;var j=Math.abs(s-w)<=y;var k=Math.abs(n-x)<=y;if(c){p.position.top=g._convertPositionTo("relative",{top:m-g.helperProportions.height,left:0}).top-g.margins.top}if(z){p.position.top=g._convertPositionTo("relative",{top:A,left:0}).top-g.margins.top}if(j){p.position.left=g._convertPositionTo("relative",{top:0,left:s-g.helperProportions.width}).left-g.margins.left}if(k){p.position.left=g._convertPositionTo("relative",{top:0,left:n}).left-g.margins.left}}var h=(c||z||j||k);if(q.snapMode!="outer"){var c=Math.abs(m-f)<=y;var z=Math.abs(A-e)<=y;var j=Math.abs(s-x)<=y;var k=Math.abs(n-w)<=y;if(c){p.position.top=g._convertPositionTo("relative",{top:m,left:0}).top-g.margins.top}if(z){p.position.top=g._convertPositionTo("relative",{top:A-g.helperProportions.height,left:0}).top-g.margins.top}if(j){p.position.left=g._convertPositionTo("relative",{top:0,left:s}).left-g.margins.left}if(k){p.position.left=g._convertPositionTo("relative",{top:0,left:n-g.helperProportions.width}).left-g.margins.left}}if(!g.snapElements[v].snapping&&(c||z||j||k||h)){(g.options.snap.snap&&g.options.snap.snap.call(g.element,u,a.extend(g._uiHash(),{snapItem:g.snapElements[v].item})))}g.snapElements[v].snapping=(c||z||j||k||h)}}});a.ui.plugin.add("draggable","stack",{start:function(b,c){var e=a(this).data("draggable").options;var d=a.makeArray(a(e.stack.group)).sort(function(g,f){return(parseInt(a(g).css("zIndex"),10)||e.stack.min)-(parseInt(a(f).css("zIndex"),10)||e.stack.min)});a(d).each(function(f){this.style.zIndex=e.stack.min+f});this[0].style.zIndex=e.stack.min+d.length}});a.ui.plugin.add("draggable","zIndex",{start:function(c,d){var b=a(d.helper),e=a(this).data("draggable").options;if(b.css("zIndex")){e._zIndex=b.css("zIndex")}b.css("zIndex",e.zIndex)},stop:function(b,c){var d=a(this).data("draggable").options;if(d._zIndex){a(c.helper).css("zIndex",d._zIndex)}}})})(jQuery);