/*
YUI 3.15.0 (build 834026e)
Copyright 2014 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/

YUI.add("dd-constrain",function(e,t){var n="dragNode",r="offsetHeight",i="offsetWidth",s="host",o="tickXArray",u="tickYArray",a=e.DD.DDM,f="top",l="right",c="bottom",h="left",p="view",d=null,v="drag:tickAlignX",m="drag:tickAlignY",g=function(){this._lazyAddAttrs=!1,g.superclass.constructor.apply(this,arguments)};g.NAME="ddConstrained",g.NS="con",g.ATTRS={host:{},stickX:{value:!1},stickY:{value:!1},tickX:{value:!1},tickY:{value:!1},tickXArray:{value:!1},tickYArray:{value:!1},gutter:{value:"0",setter:function(t){return e.DD.DDM.cssSizestoObject(t)}},constrain:{value:p,setter:function(t){var n=e.one(t);return n&&(t=n),t}},constrain2region:{setter:function(e){return this.set("constrain",e)}},constrain2node:{setter:function(t){return this.set("constrain",e.one(t))}},constrain2view:{setter:function(){return this.set("constrain",p)}},cacheRegion:{value:!0}},d={_lastTickXFired:null,_lastTickYFired:null,initializer:function(){this._createEvents(),this._eventHandles=[this.get(s).on("drag:end",e.bind(this._handleEnd,this)),this.get(s).on("drag:start",e.bind(this._handleStart,this)),this.get(s).after("drag:align",e.bind(this.align,this)),this.get(s).after("drag:drag",e.bind(this.drag,this))]},destructor:function(){e.Array.each(this._eventHandles,function(e){e.detach()}),this._eventHandles.length=0},_createEvents:function(){var t=[v,m];e.Array.each(t,function(e){this.publish(e,{type:e,emitFacade:!0,bubbles:!0,queuable:!1,prefix:"drag"})},this)},_handleEnd:function(){this._lastTickYFired=null,this._lastTickXFired=null},_handleStart:function(){this.resetCache()},_regionCache:null,_cacheRegion:function(){this._regionCache=this.get("constrain").get("region")},resetCache:function(){this._regionCache=null},_getConstraint:function(){var t=this.get("constrain"),r=this.get("gutter"),i;t&&(t instanceof e.Node?(this._regionCache||(this._eventHandles.push(e.on("resize",e.bind(this._cacheRegion,this),e.config.win)),this._cacheRegion()),i=e.clone(this._regionCache),this.get("cacheRegion")||this.resetCache()):e.Lang.isObject(t)&&(i=e.clone(t)));if(!t||!i)t=p;return t===p&&(i=this.get(s).get(n).get("viewportRegion")),e.Object.each(r,function(e,t){t===l||t===c?i[t]-=e:i[t]+=e}),i},getRegion:function(e){var t={},o=null,u=null,a=this.get(s);return t=this._getConstraint(),e&&(o=a.get(n).get(r),u=a.get(n).get(i),t[l]=t[l]-u,t[c]=t[c]-o),t},_checkRegion:function(e){var t=e,o=this.getRegion(),u=this.get(s),a=u.get(n).get(r),p=u.get(n).get(i);return t[1]>o[c]-a&&(e[1]=o[c]-a),o[f]>t[1]&&(e[1]=o[f]),t[0]>o[l]-p&&(e[0]=o[l]-p),o[h]>t[0]&&(e[0]=o[h]),e},inRegion:function(e){e=e||this.get(s).get(n).getXY();var t=this._checkRegion([e[0],e[1]]),r=!1;return e[0]===t[0]&&e[1]===t[1]&&(r=!0),r},align:function(){var e=this.get(s),t=[e.actXY[0],e.actXY[1]],n=this.getRegion(!0);this.get("stickX")&&(t[1]=e.startXY[1]-e.deltaXY[1]),this.get("stickY")&&(t[0]=e.startXY[0]-e.deltaXY[0]),n&&(t=this._checkRegion(t)),t=this._checkTicks(t,n),e.actXY=t},drag:function(){var t=this.get(s),n=this.get("tickX"),r=this.get("tickY"),i=[t.actXY[0],t.actXY[1]];(e.Lang.isNumber(n)||this.get(o))&&this._lastTickXFired!==i[0]&&(this._tickAlignX(),this._lastTickXFired=i[0]),(e.Lang.isNumber(r)||this.get(u))&&this._lastTickYFired!==i[1]&&(this._tickAlignY(),this._lastTickYFired=i[1])},_checkTicks:function(e,t){var n=this.get(s),r=n.startXY[0]-n.deltaXY[0],i=n.startXY[1]-n.deltaXY[1],p=this.get("tickX"),d=this.get("tickY");return p&&!this.get(o)&&(e[0]=a._calcTicks(e[0],r,p,t[h],t[l])),d&&!this.get(u)&&(e[1]=a._calcTicks(e[1],i,d,t[f],t[c])),this.get(o)&&(e[0]=a._calcTickArray(e[0],this.get(o),t[h],t[l])),this.get(u)&&(e[1]=a._calcTickArray(e[1],this.get(u),t[f],t[c])),e},_tickAlignX:function(){this.fire(v)},_tickAlignY:function(){this.fire(m)}},e.namespace("Plugin"),e.extend(g,e.Base,d),e.Plugin.DDConstrained=g,e.mix(a,{_calcTicks:function(e,t,n,r,i){var s=(e-t)/n,o=Math.floor(s),u=Math.ceil(s);return(o!==0||u!==0)&&s>=o&&s<=u&&(e=t+n*o,r&&i&&(e<r&&(e=t+n*(o+1)),e>i&&(e=t+n*(o-1)))),e},_calcTickArray:function(e,t,n,r){var i=0,s=t.length,o=0,u,a,f;if(!t||t.length===0)return e;if(t[0]>=e)return t[0];for(i=0;i<s;i++){o=i+1;if(t[o]&&t[o]>=e)return u=e-t[i],a=t[o]-e,f=a>u?t[i]:t[o],n&&r&&f>r&&(t[i]?f=t[i]:f=t[s-1]),f}return t[t.length-1]}})},"3.15.0",{requires:["dd-drag"]});
