tether - npm Package Compare versions

Comparing version 1.3.0 to 1.3.1

bower.json

 {
   "name": "tether",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "homepage": "http://github.hubspot.com/tether",
@@ -10,3 +10,4 @@ "authors": [
   "maintainers": [
-    "Nicholas Hwang <[e-mail]>"
+    "Nicholas Hwang <[e-mail]>",
+    "Trevor Burnham <[e-mail]>"
   ],
@@ -13,0 +14,0 @@ "description": "A client-side library to make absolutely positioned elements attach to elements in the page efficiently.",

component.json

 {
   "name": "tether",
   "repo": "HubSpot/tether",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "A client-side library to make absolutely positioned elements attach to elements in the page efficiently.",
@@ -6,0 +6,0 @@ "authors": [

dist/js/tether.js

@@ -24,2 +24,4 @@ /*! tether 1.3.0 */
 
+var zeroElement = null;
+
 function getScrollParents(el) {
@@ -37,3 +39,3 @@ // In firefox if the el is inside an iframe with display: none; window.getComputedStyle() will return null;
   var parent = el;
-  while (parent = parent.parentNode) {
+  while ((parent = parent.parentNode) && parent && parent.nodeType === 1) {
     var style = undefined;
@@ -73,3 +75,3 @@ try {
 var zeroPosCache = {};
-var getOrigin = function getOrigin(doc) {
+var getOrigin = function getOrigin() {
   // getBoundingClientRect is unfortunately too accurate.  It introduces a pixel or two of
@@ -79,5 +81,5 @@ // jitter as the user scrolls that messes with our ability to detect if two positions
   // get the same jitter, so we can cancel the two out.
-  var node = doc._tetherZeroElement;
-  if (typeof node === 'undefined') {
-    node = doc.createElement('div');
+  var node = zeroElement;
+  if (!node) {
+    node = document.createElement('div');
     node.setAttribute('data-tether-id', uniqueId());
@@ -90,5 +92,5 @@ extend(node.style, {
 
-    doc.body.appendChild(node);
+    document.body.appendChild(node);
 
-    doc._tetherZeroElement = node;
+    zeroElement = node;
   }
@@ -115,2 +117,7 @@
 
+function removeUtilElements() {
+  document.body.removeChild(zeroElement);
+  zeroElement = undefined;
+};
+
 function getBounds(el) {
@@ -135,3 +142,3 @@ var doc = undefined;
 
-  var origin = getOrigin(doc);
+  var origin = getOrigin();
 
@@ -384,3 +391,4 @@ box.top -= origin.top;
   Evented: Evented,
-  getScrollBarSize: getScrollBarSize
+  getScrollBarSize: getScrollBarSize,
+  removeUtilElements: removeUtilElements
 };
@@ -416,2 +424,3 @@ /* globals TetherBase, performance */
 var getScrollBarSize = _TetherBase$Utils.getScrollBarSize;
+var removeUtilElements = _TetherBase$Utils.removeUtilElements;
 
@@ -690,3 +699,3 @@ function within(a, b) {
 
-      if (typeof this.scrollParent !== 'undefined') {
+      if (typeof this.scrollParents !== 'undefined') {
         this.disable();
@@ -864,5 +873,9 @@ }
           tethers.splice(i, 1);
-          return;
         }
       });
+
+      // Remove any elements we were using for convenience from the DOM
+      if (tethers.length === 0) {
+        removeUtilElements();
+      }
     }
@@ -1208,3 +1221,3 @@ }, {
         var currentNode = this.element.parentNode;
-        while (currentNode && currentNode.tagName !== 'BODY') {
+        while (currentNode && currentNode.nodeType === 1 && currentNode.tagName !== 'BODY') {
           if (getComputedStyle(currentNode).position !== 'static') {
@@ -1269,3 +1282,3 @@ offsetParentIsBody = false;
   if (to === 'scrollParent') {
-    to = tether.scrollParent;
+    to = tether.scrollParents[0];
   } else if (to === 'window') {
@@ -1272,0 +1285,0 @@ to = [pageXOffset, pageYOffset, innerWidth + pageXOffset, innerHeight + pageYOffset];

dist/js/tether.min.js

@@ -1,1 +0,1 @@
-!function(t,e){"function"==typeof define&&define.amd?define(e):"object"==typeof exports?module.exports=e(require,exports,module):t.Tether=e()}(this,function(t,e,o){"use strict";function i(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}function n(t){var e=getComputedStyle(t)||{},o=e.position,i=[];if("fixed"===o)return[t];for(var n=t;n=n.parentNode;){var r=void 0;try{r=getComputedStyle(n)}catch(s){}if("undefined"==typeof r||null===r)return i.push(n),i;var a=r,f=a.overflow,h=a.overflowX,l=a.overflowY;/(auto|scroll)/.test(f+l+h)&&("absolute"!==o||["relative","absolute","fixed"].indexOf(r.position)>=0)&&i.push(n)}return i.push(document.body),i}function r(t){var e=void 0;t===document?(e=document,t=document.documentElement):e=t.ownerDocument;var o=e.documentElement,i={},n=t.getBoundingClientRect();for(var r in n)i[r]=n[r];var s=A(e);return i.top-=s.top,i.left-=s.left,"undefined"==typeof i.width&&(i.width=document.body.scrollWidth-i.left-i.right),"undefined"==typeof i.height&&(i.height=document.body.scrollHeight-i.top-i.bottom),i.top=i.top-o.clientTop,i.left=i.left-o.clientLeft,i.right=e.body.clientWidth-i.width-i.left,i.bottom=e.body.clientHeight-i.height-i.top,i}function s(t){return t.offsetParent||document.documentElement}function a(){var t=document.createElement("div");t.style.width="100%",t.style.height="200px";var e=document.createElement("div");f(e.style,{position:"absolute",top:0,left:0,pointerEvents:"none",visibility:"hidden",width:"200px",height:"150px",overflow:"hidden"}),e.appendChild(t),document.body.appendChild(e);var o=t.offsetWidth;e.style.overflow="scroll";var i=t.offsetWidth;o===i&&(i=e.clientWidth),document.body.removeChild(e);var n=o-i;return{width:n,height:n}}function f(){var t=arguments.length<=0||void 0===arguments[0]?{}:arguments[0],e=[];return Array.prototype.push.apply(e,arguments),e.slice(1).forEach(function(e){if(e)for(var o in 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w(t,e){return"scrollParent"===e?e=t.scrollParent:"window"===e&&(e=[pageXOffset,pageYOffset,innerWidth+pageXOffset,innerHeight+pageYOffset]),e===document&&(e=e.documentElement),"undefined"!=typeof e.nodeType&&!function(){var t=r(e),o=t,i=getComputedStyle(e);e=[o.left,o.top,t.width+o.left,t.height+o.top],D.forEach(function(t,o){t=t[0].toUpperCase()+t.substr(1),"Top"===t||"Left"===t?e[o]+=parseFloat(i["border"+t+"Width"]):e[o]-=parseFloat(i["border"+t+"Width"])})}(),e}var C=function(){function t(t,e){for(var o=0;o<e.length;o++){var i=e[o];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(t,i.key,i)}}return function(e,o,i){return o&&t(e.prototype,o),i&&t(e,i),e}}(),O=void 0;"undefined"==typeof O&&(O={modules:[]});var E=function(){var t=0;return function(){return++t}}(),x={},A=function(t){var e=t._tetherZeroElement;"undefined"==typeof 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o=0;o<this.bindings[t].length;)this.bindings[t][o].handler===e?this.bindings[t].splice(o,1):++o}},{key:"trigger",value:function(t){if("undefined"!=typeof this.bindings&&this.bindings[t]){for(var e=0,o=arguments.length,i=Array(o>1?o-1:0),n=1;o>n;n++)i[n-1]=arguments[n];for(;e<this.bindings[t].length;){var r=this.bindings[t][e],s=r.handler,a=r.ctx,f=r.once,h=a;"undefined"==typeof h&&(h=this),s.apply(h,i),f?this.bindings[t].splice(e,1):++e}}}}]),t}();O.Utils={getScrollParents:n,getBounds:r,getOffsetParent:s,extend:f,addClass:l,removeClass:h,hasClass:d,updateClasses:c,defer:S,flush:P,uniqueId:E,Evented:W,getScrollBarSize:a};var _=function(){function t(t,e){var o=[],i=!0,n=!1,r=void 0;try{for(var s,a=t[Symbol.iterator]();!(i=(s=a.next()).done)&&(o.push(s.value),!e||o.length!==e);i=!0);}catch(f){n=!0,r=f}finally{try{!i&&a["return"]&&a["return"]()}finally{if(n)throw r}}return o}return function(e,o){if(Array.isArray(e))return e;if(Symbol.iterator in Object(e))return t(e,o);throw new 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r=this.options,s=r.element,a=r.target,h=r.targetModifier;if(this.element=s,this.target=a,this.targetModifier=h,"viewport"===this.target?(this.target=document.body,this.targetModifier="visible"):"scroll-handle"===this.target&&(this.target=document.body,this.targetModifier="scroll-handle"),["element","target"].forEach(function(t){if("undefined"==typeof e[t])throw new Error("Tether Error: Both element and target must be defined");"undefined"!=typeof e[t].jquery?e[t]=e[t][0]:"string"==typeof e[t]&&(e[t]=document.querySelector(e[t]))}),l(this.element,this.getClass("element")),this.options.addTargetClasses!==!1&&l(this.target,this.getClass("target")),!this.options.attachment)throw new Error("Tether Error: You must provide an attachment");this.targetAttachment=R(this.options.targetAttachment),this.attachment=R(this.options.attachment),this.offset=N(this.options.offset),this.targetOffset=N(this.options.targetOffset),"undefined"!=typeof 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e.height=Math.min(e.height,t.height-(pageYOffset-t.top)),e.height=Math.min(e.height,t.height-(t.top+t.height-(pageYOffset+innerHeight))),e.height=Math.min(innerHeight,e.height),e.height-=2,e.width=Math.min(e.width,t.width-(pageXOffset-t.left)),e.width=Math.min(e.width,t.width-(t.left+t.width-(pageXOffset+innerWidth))),e.width=Math.min(innerWidth,e.width),e.width-=2,e.top<pageYOffset&&(e.top=pageYOffset),e.left<pageXOffset&&(e.left=pageXOffset),e}if("scroll-handle"===this.targetModifier){var t=void 0,o=this.target;o===document.body?(o=document.documentElement,t={left:pageXOffset,top:pageYOffset,height:innerHeight,width:innerWidth}):t=r(o);var i=getComputedStyle(o),n=o.scrollWidth>o.clientWidth||[i.overflow,i.overflowX].indexOf("scroll")>=0||this.target!==document.body,s=0;n&&(s=15);var a=t.height-parseFloat(i.borderTopWidth)-parseFloat(i.borderBottomWidth)-s,e={width:15,height:.975*a*(a/o.scrollHeight),left:t.left+t.width-parseFloat(i.borderLeftWidth)-15},f=0;408>a&&this.target===document.body&&(f=-11e-5*Math.pow(a,2)-.00727*a+22.58),this.target!==document.body&&(e.height=Math.max(e.height,24));var h=this.target.scrollTop/(o.scrollHeight-a);return e.top=h*(a-e.height-f)+t.top+parseFloat(i.borderTopWidth),this.target===document.body&&(e.height=Math.max(e.height,24)),e}}},{key:"clearCache",value:function(){this._cache={}}},{key:"cache",value:function(t,e){return"undefined"==typeof this._cache&&(this._cache={}),"undefined"==typeof this._cache[t]&&(this._cache[t]=e.call(this)),this._cache[t]}},{key:"enable",value:function(){var t=this,e=arguments.length<=0||void 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this._addAttachClasses&&(this._addAttachClasses=[]);var n=this._addAttachClasses;t.top&&n.push(this.getClass("element-attached")+"-"+t.top),t.left&&n.push(this.getClass("element-attached")+"-"+t.left),e.top&&n.push(this.getClass("target-attached")+"-"+e.top),e.left&&n.push(this.getClass("target-attached")+"-"+e.left);var r=[];i.forEach(function(t){r.push(o.getClass("element-attached")+"-"+t),r.push(o.getClass("target-attached")+"-"+t)}),S(function(){"undefined"!=typeof o._addAttachClasses&&(c(o.element,o._addAttachClasses,r),o.options.addTargetClasses!==!1&&c(o.target,o._addAttachClasses,r),delete o._addAttachClasses)})}},{key:"position",value:function(){var t=this,e=arguments.length<=0||void 0===arguments[0]?!0:arguments[0];if(this.enabled){this.clearCache();var o=H(this.targetAttachment,this.attachment);this.updateAttachClasses(this.attachment,o);var i=this.cache("element-bounds",function(){return r(t.element)}),n=i.width,f=i.height;if(0===n&&0===f&&"undefined"!=typeof this.lastSize){var h=this.lastSize;n=h.width,f=h.height}else this.lastSize={width:n,height:f};var l=this.cache("target-bounds",function(){return t.getTargetBounds()}),d=l,u=b(X(this.attachment),{width:n,height:f}),p=b(X(o),d),c=b(this.offset,{width:n,height:f}),g=b(this.targetOffset,d);u=y(u,c),p=y(p,g);for(var m=l.left+p.left-u.left,v=l.top+p.top-u.top,w=0;w<O.modules.length;++w){var C=O.modules[w],E=C.position.call(this,{left:m,top:v,targetAttachment:o,targetPos:l,elementPos:i,offset:u,targetOffset:p,manualOffset:c,manualTargetOffset:g,scrollbarSize:A,attachment:this.attachment});if(E===!1)return!1;"undefined"!=typeof E&&"object"==typeof E&&(v=E.top,m=E.left)}var x={page:{top:v,left:m},viewport:{top:v-pageYOffset,bottom:pageYOffset-v-f+innerHeight,left:m-pageXOffset,right:pageXOffset-m-n+innerWidth}},A=void 0;return 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this.scrollParents&&this.disable(),"scroll-handle"===this.targetModifier?this.scrollParents=[this.target]:this.scrollParents=i(this.target),this.options.enabled!==!1&&this.enable(o)}},{key:"getTargetBounds",value:function(){if("undefined"==typeof this.targetModifier)return s(this.target);if("visible"===this.targetModifier){if(this.target===document.body)return{top:pageYOffset,left:pageXOffset,height:innerHeight,width:innerWidth};var t=s(this.target),e={height:t.height,width:t.width,top:t.top,left:t.left};return e.height=Math.min(e.height,t.height-(pageYOffset-t.top)),e.height=Math.min(e.height,t.height-(t.top+t.height-(pageYOffset+innerHeight))),e.height=Math.min(innerHeight,e.height),e.height-=2,e.width=Math.min(e.width,t.width-(pageXOffset-t.left)),e.width=Math.min(e.width,t.width-(t.left+t.width-(pageXOffset+innerWidth))),e.width=Math.min(innerWidth,e.width),e.width-=2,e.top<pageYOffset&&(e.top=pageYOffset),e.left<pageXOffset&&(e.left=pageXOffset),e}if("scroll-handle"===this.targetModifier){var t=void 0,o=this.target;o===document.body?(o=document.documentElement,t={left:pageXOffset,top:pageYOffset,height:innerHeight,width:innerWidth}):t=s(o);var n=getComputedStyle(o),i=o.scrollWidth>o.clientWidth||[n.overflow,n.overflowX].indexOf("scroll")>=0||this.target!==document.body,r=0;i&&(r=15);var a=t.height-parseFloat(n.borderTopWidth)-parseFloat(n.borderBottomWidth)-r,e={width:15,height:.975*a*(a/o.scrollHeight),left:t.left+t.width-parseFloat(n.borderLeftWidth)-15},f=0;408>a&&this.target===document.body&&(f=-11e-5*Math.pow(a,2)-.00727*a+22.58),this.target!==document.body&&(e.height=Math.max(e.height,24));var l=this.target.scrollTop/(o.scrollHeight-a);return e.top=l*(a-e.height-f)+t.top+parseFloat(n.borderTopWidth),this.target===document.body&&(e.height=Math.max(e.height,24)),e}}},{key:"clearCache",value:function(){this._cache={}}},{key:"cache",value:function(t,e){return"undefined"==typeof this._cache&&(this._cache={}),"undefined"==typeof this._cache[t]&&(this._cache[t]=e.call(this)),this._cache[t]}},{key:"enable",value:function(){var t=this,e=arguments.length<=0||void 0===arguments[0]?!0:arguments[0];this.options.addTargetClasses!==!1&&d(this.target,this.getClass("enabled")),d(this.element,this.getClass("enabled")),this.enabled=!0,this.scrollParents.forEach(function(e){e!==document&&e.addEventListener("scroll",t.position)}),e&&this.position()}},{key:"disable",value:function(){var t=this;h(this.target,this.getClass("enabled")),h(this.element,this.getClass("enabled")),this.enabled=!1,"undefined"!=typeof this.scrollParents&&this.scrollParents.forEach(function(e){e.removeEventListener("scroll",t.position)})}},{key:"destroy",value:function(){var t=this;this.disable(),L.forEach(function(e,o){e===t&&L.splice(o,1)}),0===L.length&&r()}},{key:"updateAttachClasses",value:function(t,e){var o=this;t=t||this.attachment,e=e||this.targetAttachment;var n=["left","top","bottom","right","middle","center"];"undefined"!=typeof this._addAttachClasses&&this._addAttachClasses.length&&this._addAttachClasses.splice(0,this._addAttachClasses.length),"undefined"==typeof this._addAttachClasses&&(this._addAttachClasses=[]);var i=this._addAttachClasses;t.top&&i.push(this.getClass("element-attached")+"-"+t.top),t.left&&i.push(this.getClass("element-attached")+"-"+t.left),e.top&&i.push(this.getClass("target-attached")+"-"+e.top),e.left&&i.push(this.getClass("target-attached")+"-"+e.left);var r=[];n.forEach(function(t){r.push(o.getClass("element-attached")+"-"+t),r.push(o.getClass("target-attached")+"-"+t)}),W(function(){"undefined"!=typeof o._addAttachClasses&&(g(o.element,o._addAttachClasses,r),o.options.addTargetClasses!==!1&&g(o.target,o._addAttachClasses,r),delete o._addAttachClasses)})}},{key:"position",value:function(){var t=this,e=arguments.length<=0||void 0===arguments[0]?!0:arguments[0];if(this.enabled){this.clearCache();var o=N(this.targetAttachment,this.attachment);this.updateAttachClasses(this.attachment,o);var n=this.cache("element-bounds",function(){return s(t.element)}),i=n.width,r=n.height;if(0===i&&0===r&&"undefined"!=typeof this.lastSize){var l=this.lastSize;i=l.width,r=l.height}else this.lastSize={width:i,height:r};var h=this.cache("target-bounds",function(){return t.getTargetBounds()}),d=h,u=w(U(this.attachment),{width:i,height:r}),p=w(U(o),d),c=w(this.offset,{width:i,height:r}),g=w(this.targetOffset,d);u=b(u,c),p=b(p,g);for(var m=h.left+p.left-u.left,v=h.top+p.top-u.top,y=0;y<E.modules.length;++y){var C=E.modules[y],O=C.position.call(this,{left:m,top:v,targetAttachment:o,targetPos:h,elementPos:n,offset:u,targetOffset:p,manualOffset:c,manualTargetOffset:g,scrollbarSize:T,attachment:this.attachment});if(O===!1)return!1;"undefined"!=typeof O&&"object"==typeof O&&(v=O.top,m=O.left)}var x={page:{top:v,left:m},viewport:{top:v-pageYOffset,bottom:pageYOffset-v-r+innerHeight,left:m-pageXOffset,right:pageXOffset-m-i+innerWidth}},T=void 0;return document.body.scrollWidth>window.innerWidth&&(T=this.cache("scrollbar-size",f),x.viewport.bottom-=T.height),document.body.scrollHeight>window.innerHeight&&(T=this.cache("scrollbar-size",f),x.viewport.right-=T.width),(-1===["","static"].indexOf(document.body.style.position)||-1===["","static"].indexOf(document.body.parentElement.style.position))&&(x.page.bottom=document.body.scrollHeight-v-r,x.page.right=document.body.scrollWidth-m-i),"undefined"!=typeof this.options.optimizations&&this.options.optimizations.moveElement!==!1&&"undefined"==typeof this.targetModifier&&!function(){var e=t.cache("target-offsetparent",function(){return a(t.target)}),o=t.cache("target-offsetparent-bounds",function(){return s(e)}),n=getComputedStyle(e),i=o,r={};if(["Top","Left","Bottom","Right"].forEach(function(t){r[t.toLowerCase()]=parseFloat(n["border"+t+"Width"])}),o.right=document.body.scrollWidth-o.left-i.width+r.right,o.bottom=document.body.scrollHeight-o.top-i.height+r.bottom,x.page.top>=o.top+r.top&&x.page.bottom>=o.bottom&&x.page.left>=o.left+r.left&&x.page.right>=o.right){var f=e.scrollTop,l=e.scrollLeft;x.offset={top:x.page.top-o.top+f-r.top,left:x.page.left-o.left+l-r.left}}}(),this.move(x),this.history.unshift(x),this.history.length>3&&this.history.pop(),e&&M(),!0}}},{key:"move",value:function(t){var e=this;if("undefined"!=typeof this.element.parentNode){var o={};for(var n in t){o[n]={};for(var i in t[n]){for(var r=!1,s=0;s<this.history.length;++s){var f=this.history[s];if("undefined"!=typeof f[n]&&!v(f[n][i],t[n][i])){r=!0;break}}r||(o[n][i]=!0)}}var h={top:"",left:"",right:"",bottom:""},d=function(t,o){var n="undefined"!=typeof e.options.optimizations,i=n?e.options.optimizations.gpu:null;if(i!==!1){var r=void 0,s=void 0;t.top?(h.top=0,r=o.top):(h.bottom=0,r=-o.bottom),t.left?(h.left=0,s=o.left):(h.right=0,s=-o.right),h[j]="translateX("+Math.round(s)+"px) translateY("+Math.round(r)+"px)","msTransform"!==j&&(h[j]+=" translateZ(0)")}else t.top?h.top=o.top+"px":h.bottom=o.bottom+"px",t.left?h.left=o.left+"px":h.right=o.right+"px"},u=!1;if((o.page.top||o.page.bottom)&&(o.page.left||o.page.right)?(h.position="absolute",d(o.page,t.page)):(o.viewport.top||o.viewport.bottom)&&(o.viewport.left||o.viewport.right)?(h.position="fixed",d(o.viewport,t.viewport)):"undefined"!=typeof o.offset&&o.offset.top&&o.offset.left?!function(){h.position="absolute";var n=e.cache("target-offsetparent",function(){return a(e.target)});a(e.element)!==n&&W(function(){e.element.parentNode.removeChild(e.element),n.appendChild(e.element)}),d(o.offset,t.offset),u=!0}():(h.position="absolute",d({top:!0,left:!0},t.page)),!u){for(var p=!0,c=this.element.parentNode;c&&1===c.nodeType&&"BODY"!==c.tagName;){if("static"!==getComputedStyle(c).position){p=!1;break}c=c.parentNode}p||(this.element.parentNode.removeChild(this.element),document.body.appendChild(this.element))}var g={},m=!1;for(var i in h){var y=h[i],b=this.element.style[i];b!==y&&(m=!0,g[i]=y)}m&&W(function(){l(e.element.style,g)})}}}]),e}(_);D.modules=[],E.position=Y;var I=l(D,E),k=function(){function t(t,e){var o=[],n=!0,i=!1,r=void 0;try{for(var s,a=t[Symbol.iterator]();!(n=(s=a.next()).done)&&(o.push(s.value),!e||o.length!==e);n=!0);}catch(f){i=!0,r=f}finally{try{!n&&a["return"]&&a["return"]()}finally{if(i)throw r}}return o}return function(e,o){if(Array.isArray(e))return e;if(Symbol.iterator in Object(e))return t(e,o);throw new TypeError("Invalid attempt to destructure non-iterable instance")}}(),z=E.Utils,s=z.getBounds,l=z.extend,g=z.updateClasses,W=z.defer,V=["left","top","right","bottom"];E.modules.push({position:function(t){var e=this,o=t.top,n=t.left,i=t.targetAttachment;if(!this.options.constraints)return!0;var r=this.cache("element-bounds",function(){return s(e.element)}),a=r.height,f=r.width;if(0===f&&0===a&&"undefined"!=typeof this.lastSize){var h=this.lastSize;f=h.width,a=h.height}var d=this.cache("target-bounds",function(){return e.getTargetBounds()}),u=d.height,p=d.width,c=[this.getClass("pinned"),this.getClass("out-of-bounds")];this.options.constraints.forEach(function(t){var e=t.outOfBoundsClass,o=t.pinnedClass;e&&c.push(e),o&&c.push(o)}),c.forEach(function(t){["left","top","right","bottom"].forEach(function(e){c.push(t+"-"+e)})});var m=[],v=l({},i),y=l({},this.attachment);return this.options.constraints.forEach(function(t){var r=t.to,s=t.attachment,l=t.pin;"undefined"==typeof s&&(s="");var h=void 0,d=void 0;if(s.indexOf(" ")>=0){var c=s.split(" "),g=k(c,2);d=g[0],h=g[1]}else h=d=s;var b=C(e,r);("target"===d||"both"===d)&&(o<b[1]&&"top"===v.top&&(o+=u,v.top="bottom"),o+a>b[3]&&"bottom"===v.top&&(o-=u,v.top="top")),"together"===d&&("top"===v.top&&("bottom"===y.top&&o<b[1]?(o+=u,v.top="bottom",o+=a,y.top="top"):"top"===y.top&&o+a>b[3]&&o-(a-u)>=b[1]&&(o-=a-u,v.top="bottom",y.top="bottom")),"bottom"===v.top&&("top"===y.top&&o+a>b[3]?(o-=u,v.top="top",o-=a,y.top="bottom"):"bottom"===y.top&&o<b[1]&&o+(2*a-u)<=b[3]&&(o+=a-u,v.top="top",y.top="top")),"middle"===v.top&&(o+a>b[3]&&"top"===y.top?(o-=a,y.top="bottom"):o<b[1]&&"bottom"===y.top&&(o+=a,y.top="top"))),("target"===h||"both"===h)&&(n<b[0]&&"left"===v.left&&(n+=p,v.left="right"),n+f>b[2]&&"right"===v.left&&(n-=p,v.left="left")),"together"===h&&(n<b[0]&&"left"===v.left?"right"===y.left?(n+=p,v.left="right",n+=f,y.left="left"):"left"===y.left&&(n+=p,v.left="right",n-=f,y.left="right"):n+f>b[2]&&"right"===v.left?"left"===y.left?(n-=p,v.left="left",n-=f,y.left="right"):"right"===y.left&&(n-=p,v.left="left",n+=f,y.left="left"):"center"===v.left&&(n+f>b[2]&&"left"===y.left?(n-=f,y.left="right"):n<b[0]&&"right"===y.left&&(n+=f,y.left="left"))),("element"===d||"both"===d)&&(o<b[1]&&"bottom"===y.top&&(o+=a,y.top="top"),o+a>b[3]&&"top"===y.top&&(o-=a,y.top="bottom")),("element"===h||"both"===h)&&(n<b[0]&&("right"===y.left?(n+=f,y.left="left"):"center"===y.left&&(n+=f/2,y.left="left")),n+f>b[2]&&("left"===y.left?(n-=f,y.left="right"):"center"===y.left&&(n-=f/2,y.left="right"))),"string"==typeof l?l=l.split(",").map(function(t){return t.trim()}):l===!0&&(l=["top","left","right","bottom"]),l=l||[];var w=[],O=[];o<b[1]&&(l.indexOf("top")>=0?(o=b[1],w.push("top")):O.push("top")),o+a>b[3]&&(l.indexOf("bottom")>=0?(o=b[3]-a,w.push("bottom")):O.push("bottom")),n<b[0]&&(l.indexOf("left")>=0?(n=b[0],w.push("left")):O.push("left")),n+f>b[2]&&(l.indexOf("right")>=0?(n=b[2]-f,w.push("right")):O.push("right")),w.length&&!function(){var t=void 0;t="undefined"!=typeof e.options.pinnedClass?e.options.pinnedClass:e.getClass("pinned"),m.push(t),w.forEach(function(e){m.push(t+"-"+e)})}(),O.length&&!function(){var t=void 0;t="undefined"!=typeof e.options.outOfBoundsClass?e.options.outOfBoundsClass:e.getClass("out-of-bounds"),m.push(t),O.forEach(function(e){m.push(t+"-"+e)})}(),(w.indexOf("left")>=0||w.indexOf("right")>=0)&&(y.left=v.left=!1),(w.indexOf("top")>=0||w.indexOf("bottom")>=0)&&(y.top=v.top=!1),(v.top!==i.top||v.left!==i.left||y.top!==e.attachment.top||y.left!==e.attachment.left)&&(e.updateAttachClasses(y,v),e.trigger("update",{attachment:y,targetAttachment:v}))}),W(function(){e.options.addTargetClasses!==!1&&g(e.target,m,c),g(e.element,m,c)}),{top:o,left:n}}});var z=E.Utils,s=z.getBounds,g=z.updateClasses,W=z.defer;E.modules.push({position:function(t){var e=this,o=t.top,n=t.left,i=this.cache("element-bounds",function(){return s(e.element)}),r=i.height,a=i.width,f=this.getTargetBounds(),l=o+r,h=n+a,d=[];o<=f.bottom&&l>=f.top&&["left","right"].forEach(function(t){var e=f[t];(e===n||e===h)&&d.push(t)}),n<=f.right&&h>=f.left&&["top","bottom"].forEach(function(t){var e=f[t];(e===o||e===l)&&d.push(t)});var u=[],p=[],c=["left","top","right","bottom"];return u.push(this.getClass("abutted")),c.forEach(function(t){u.push(e.getClass("abutted")+"-"+t)}),d.length&&p.push(this.getClass("abutted")),d.forEach(function(t){p.push(e.getClass("abutted")+"-"+t)}),W(function(){e.options.addTargetClasses!==!1&&g(e.target,p,u),g(e.element,p,u)}),!0}});var k=function(){function t(t,e){var o=[],n=!0,i=!1,r=void 0;try{for(var s,a=t[Symbol.iterator]();!(n=(s=a.next()).done)&&(o.push(s.value),!e||o.length!==e);n=!0);}catch(f){i=!0,r=f}finally{try{!n&&a["return"]&&a["return"]()}finally{if(i)throw r}}return o}return function(e,o){if(Array.isArray(e))return e;if(Symbol.iterator in Object(e))return t(e,o);throw new TypeError("Invalid attempt to destructure non-iterable instance")}}();return E.modules.push({position:function(t){var e=t.top,o=t.left;if(this.options.shift){var n=this.options.shift;"function"==typeof this.options.shift&&(n=this.options.shift.call(this,{top:e,left:o}));var i=void 0,r=void 0;if("string"==typeof n){n=n.split(" "),n[1]=n[1]||n[0];var s=n,a=k(s,2);i=a[0],r=a[1],i=parseFloat(i,10),r=parseFloat(r,10)}else i=n.top,r=n.left;return e+=i,o+=r,{top:e,left:o}}}}),I});

package.json

 {
   "name": "tether",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "A client-side library to make absolutely positioned elements attach to elements in the page efficiently.",
@@ -10,3 +10,4 @@ "authors": [
   "maintainers": [
-    "Nicholas Hwang <[e-mail]>"
+    "Nicholas Hwang <[e-mail]>",
+    "Trevor Burnham <[e-mail]>"
   ],
@@ -13,0 +14,0 @@ "scripts": {

src/js/constraint.js

@@ -14,3 +14,3 @@ /* globals TetherBase */
   if (to === 'scrollParent') {
-    to = tether.scrollParent;
+    to = tether.scrollParents[0];
   } else if (to === 'window') {
@@ -17,0 +17,0 @@ to = [pageXOffset, pageYOffset, innerWidth + pageXOffset, innerHeight + pageYOffset];

src/js/tether.js

@@ -17,3 +17,4 @@ /* globals TetherBase, performance */
   flush,
-  getScrollBarSize
+  getScrollBarSize,
+  removeUtilElements
 } = TetherBase.Utils;
@@ -259,3 +260,3 @@
 
-    if (typeof this.scrollParent !== 'undefined') {
+    if (typeof this.scrollParents !== 'undefined') {
       this.disable();
@@ -423,5 +424,9 @@ }
         tethers.splice(i, 1);
-        return;
       }
     });
+
+    // Remove any elements we were using for convenience from the DOM
+    if (tethers.length === 0) {
+      removeUtilElements();
+    }
   }
@@ -749,3 +754,3 @@
       let currentNode = this.element.parentNode;
-      while (currentNode && currentNode.tagName !== 'BODY') {
+      while (currentNode && currentNode.nodeType === 1 && currentNode.tagName !== 'BODY') {
         if (getComputedStyle(currentNode).position !== 'static') {
@@ -752,0 +757,0 @@ offsetParentIsBody = false;

src/js/utils.js

@@ -6,2 +6,4 @@ let TetherBase;
 
+let zeroElement = null;
+
 function getScrollParents(el) {
@@ -19,3 +21,3 @@ // In firefox if the el is inside an iframe with display: none; window.getComputedStyle() will return null;
   let parent = el;
-  while (parent = parent.parentNode) {
+  while ((parent = parent.parentNode) && parent && parent.nodeType === 1) {
     let style;
@@ -49,3 +51,3 @@ try {
 const zeroPosCache = {};
-const getOrigin = (doc) => {
+const getOrigin = () => {
   // getBoundingClientRect is unfortunately too accurate.  It introduces a pixel or two of
@@ -55,5 +57,5 @@ // jitter as the user scrolls that messes with our ability to detect if two positions
   // get the same jitter, so we can cancel the two out.
-  let node = doc._tetherZeroElement;
-  if (typeof node === 'undefined') {
-    node = doc.createElement('div');
+  let node = zeroElement;
+  if (!node) {
+    node = document.createElement('div');
     node.setAttribute('data-tether-id', uniqueId());
@@ -66,5 +68,5 @@ extend(node.style, {
 
-    doc.body.appendChild(node);
+    document.body.appendChild(node);
 
-    doc._tetherZeroElement = node;
+    zeroElement = node;
   }
@@ -91,2 +93,7 @@
 
+function removeUtilElements() {
+  document.body.removeChild(zeroElement);
+  zeroElement = undefined;
+};
+
 function getBounds(el) {
@@ -111,3 +118,3 @@ let doc;
 
-  const origin = getOrigin(doc);
+  const origin = getOrigin();
 
@@ -338,3 +345,4 @@ box.top -= origin.top;
   Evented,
-  getScrollBarSize
+  getScrollBarSize,
+  removeUtilElements
 };

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increased by0.08%

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22450

increased by0.09%

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