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/*
CSS Class Applier module for Rangy.
Adds, removes and toggles CSS classes on Ranges and Selections
Part of Rangy, a cross-browser JavaScript range and selection library
http://code.google.com/p/rangy/
Depends on Rangy core.
Copyright 2012, Tim Down
Licensed under the MIT license.
Version: 1.2.3
Build date: 26 February 2012
*/
rangy.createModule("CssClassApplier",function(i,v){function r(a,b){return a.className&&RegExp("(?:^|\\s)"+b+"(?:\\s|$)").test(a.className)}function s(a,b){if(a.className)r(a,b)||(a.className+=" "+b);else a.className=b}function o(a){return a.split(/\s+/).sort().join(" ")}function w(a,b){return o(a.className)==o(b.className)}function x(a){for(var b=a.parentNode;a.hasChildNodes();)b.insertBefore(a.firstChild,a);b.removeChild(a)}function y(a,b){var c=a.cloneRange();c.selectNodeContents(b);var d=c.intersection(a);
d=d?d.toString():"";c.detach();return d!=""}function z(a){return a.getNodes([3],function(b){return y(a,b)})}function A(a,b){if(a.attributes.length!=b.attributes.length)return false;for(var c=0,d=a.attributes.length,e,f;c<d;++c){e=a.attributes[c];f=e.name;if(f!="class"){f=b.attributes.getNamedItem(f);if(e.specified!=f.specified)return false;if(e.specified&&e.nodeValue!==f.nodeValue)return false}}return true}function B(a,b){for(var c=0,d=a.attributes.length,e;c<d;++c){e=a.attributes[c].name;if(!(b&&
h.arrayContains(b,e))&&a.attributes[c].specified&&e!="class")return true}return false}function C(a){var b;return a&&a.nodeType==1&&((b=a.parentNode)&&b.nodeType==9&&b.designMode=="on"||k(a)&&!k(a.parentNode))}function D(a){return(k(a)||a.nodeType!=1&&k(a.parentNode))&&!C(a)}function E(a){return a&&a.nodeType==1&&!M.test(p(a,"display"))}function N(a){if(a.data.length==0)return true;if(O.test(a.data))return false;switch(p(a.parentNode,"whiteSpace")){case "pre":case "pre-wrap":case "-moz-pre-wrap":return false;
case "pre-line":if(/[\r\n]/.test(a.data))return false}return E(a.previousSibling)||E(a.nextSibling)}function m(a,b,c,d){var e,f=c==0;if(h.isAncestorOf(b,a))return a;if(h.isCharacterDataNode(b))if(c==0){c=h.getNodeIndex(b);b=b.parentNode}else if(c==b.length){c=h.getNodeIndex(b)+1;b=b.parentNode}else throw v.createError("splitNodeAt should not be called with offset in the middle of a data node ("+c+" in "+b.data);var g;g=b;var j=c;g=h.isCharacterDataNode(g)?j==0?!!g.previousSibling:j==g.length?!!g.nextSibling:
true:j>0&&j<g.childNodes.length;if(g){if(!e){e=b.cloneNode(false);for(e.id&&e.removeAttribute("id");f=b.childNodes[c];)e.appendChild(f);h.insertAfter(e,b)}return b==a?e:m(a,e.parentNode,h.getNodeIndex(e),d)}else if(a!=b){e=b.parentNode;b=h.getNodeIndex(b);f||b++;return m(a,e,b,d)}return a}function F(a){var b=a?"nextSibling":"previousSibling";return function(c,d){var e=c.parentNode,f=c[b];if(f){if(f&&f.nodeType==3)return f}else if(d)if((f=e[b])&&f.nodeType==1&&e.tagName==f.tagName&&w(e,f)&&A(e,f))return f[a?
"firstChild":"lastChild"];return null}}function t(a){this.firstTextNode=(this.isElementMerge=a.nodeType==1)?a.lastChild:a;this.textNodes=[this.firstTextNode]}function q(a,b,c){this.cssClass=a;var d,e,f=null;if(typeof b=="object"&&b!==null){c=b.tagNames;f=b.elementProperties;for(d=0;e=P[d++];)if(b.hasOwnProperty(e))this[e]=b[e];d=b.normalize}else d=b;this.normalize=typeof d=="undefined"?true:d;this.attrExceptions=[];d=document.createElement(this.elementTagName);this.elementProperties={};for(var g in f)if(f.hasOwnProperty(g)){if(G.hasOwnProperty(g))g=
G[g];d[g]=f[g];this.elementProperties[g]=d[g];this.attrExceptions.push(g)}this.elementSortedClassName=this.elementProperties.hasOwnProperty("className")?o(this.elementProperties.className+" "+a):a;this.applyToAnyTagName=false;a=typeof c;if(a=="string")if(c=="*")this.applyToAnyTagName=true;else this.tagNames=c.toLowerCase().replace(/^\s\s*/,"").replace(/\s\s*$/,"").split(/\s*,\s*/);else if(a=="object"&&typeof c.length=="number"){this.tagNames=[];d=0;for(a=c.length;d<a;++d)if(c[d]=="*")this.applyToAnyTagName=
true;else this.tagNames.push(c[d].toLowerCase())}else this.tagNames=[this.elementTagName]}i.requireModules(["WrappedSelection","WrappedRange"]);var h=i.dom,H=function(){function a(b,c,d){return c&&d?" ":""}return function(b,c){if(b.className)b.className=b.className.replace(RegExp("(?:^|\\s)"+c+"(?:\\s|$)"),a)}}(),p;if(typeof window.getComputedStyle!="undefined")p=function(a,b){return h.getWindow(a).getComputedStyle(a,null)[b]};else if(typeof document.documentElement.currentStyle!="undefined")p=function(a,
b){return a.currentStyle[b]};else v.fail("No means of obtaining computed style properties found");var k;(function(){k=typeof document.createElement("div").isContentEditable=="boolean"?function(a){return a&&a.nodeType==1&&a.isContentEditable}:function(a){if(!a||a.nodeType!=1||a.contentEditable=="false")return false;return a.contentEditable=="true"||k(a.parentNode)}})();var M=/^inline(-block|-table)?$/i,O=/[^\r\n\t\f \u200B]/,Q=F(false),R=F(true);t.prototype={doMerge:function(){for(var a=[],b,c,d=0,
e=this.textNodes.length;d<e;++d){b=this.textNodes[d];c=b.parentNode;a[d]=b.data;if(d){c.removeChild(b);c.hasChildNodes()||c.parentNode.removeChild(c)}}return this.firstTextNode.data=a=a.join("")},getLength:function(){for(var a=this.textNodes.length,b=0;a--;)b+=this.textNodes[a].length;return b},toString:function(){for(var a=[],b=0,c=this.textNodes.length;b<c;++b)a[b]="'"+this.textNodes[b].data+"'";return"[Merge("+a.join(",")+")]"}};var P=["elementTagName","ignoreWhiteSpace","applyToEditableOnly"],
G={"class":"className"};q.prototype={elementTagName:"span",elementProperties:{},ignoreWhiteSpace:true,applyToEditableOnly:false,hasClass:function(a){return a.nodeType==1&&h.arrayContains(this.tagNames,a.tagName.toLowerCase())&&r(a,this.cssClass)},getSelfOrAncestorWithClass:function(a){for(;a;){if(this.hasClass(a,this.cssClass))return a;a=a.parentNode}return null},isModifiable:function(a){return!this.applyToEditableOnly||D(a)},isIgnorableWhiteSpaceNode:function(a){return this.ignoreWhiteSpace&&a&&
a.nodeType==3&&N(a)},postApply:function(a,b,c){for(var d=a[0],e=a[a.length-1],f=[],g,j=d,I=e,J=0,K=e.length,n,L,l=0,u=a.length;l<u;++l){n=a[l];if(L=Q(n,!c)){if(!g){g=new t(L);f.push(g)}g.textNodes.push(n);if(n===d){j=g.firstTextNode;J=j.length}if(n===e){I=g.firstTextNode;K=g.getLength()}}else g=null}if(a=R(e,!c)){if(!g){g=new t(e);f.push(g)}g.textNodes.push(a)}if(f.length){l=0;for(u=f.length;l<u;++l)f[l].doMerge();b.setStart(j,J);b.setEnd(I,K)}},createContainer:function(a){a=a.createElement(this.elementTagName);
i.util.extend(a,this.elementProperties);s(a,this.cssClass);return a},applyToTextNode:function(a){var b=a.parentNode;if(b.childNodes.length==1&&h.arrayContains(this.tagNames,b.tagName.toLowerCase()))s(b,this.cssClass);else{b=this.createContainer(h.getDocument(a));a.parentNode.insertBefore(b,a);b.appendChild(a)}},isRemovable:function(a){var b;if(b=a.tagName.toLowerCase()==this.elementTagName){if(b=o(a.className)==this.elementSortedClassName){var c;a:{b=this.elementProperties;for(c in b)if(b.hasOwnProperty(c)&&
a[c]!==b[c]){c=false;break a}c=true}b=c&&!B(a,this.attrExceptions)&&this.isModifiable(a)}b=b}return b},undoToTextNode:function(a,b,c){if(!b.containsNode(c)){a=b.cloneRange();a.selectNode(c);if(a.isPointInRange(b.endContainer,b.endOffset)){m(c,b.endContainer,b.endOffset,[b]);b.setEndAfter(c)}if(a.isPointInRange(b.startContainer,b.startOffset))c=m(c,b.startContainer,b.startOffset,[b])}this.isRemovable(c)?x(c):H(c,this.cssClass)},applyToRange:function(a){a.splitBoundaries();var b=z(a);if(b.length){for(var c,
d=0,e=b.length;d<e;++d){c=b[d];!this.isIgnorableWhiteSpaceNode(c)&&!this.getSelfOrAncestorWithClass(c)&&this.isModifiable(c)&&this.applyToTextNode(c)}a.setStart(b[0],0);c=b[b.length-1];a.setEnd(c,c.length);this.normalize&&this.postApply(b,a,false)}},applyToSelection:function(a){a=a||window;a=i.getSelection(a);var b,c=a.getAllRanges();a.removeAllRanges();for(var d=c.length;d--;){b=c[d];this.applyToRange(b);a.addRange(b)}},undoToRange:function(a){a.splitBoundaries();var b=z(a),c,d,e=b[b.length-1];if(b.length){for(var f=
0,g=b.length;f<g;++f){c=b[f];(d=this.getSelfOrAncestorWithClass(c))&&this.isModifiable(c)&&this.undoToTextNode(c,a,d);a.setStart(b[0],0);a.setEnd(e,e.length)}this.normalize&&this.postApply(b,a,true)}},undoToSelection:function(a){a=a||window;a=i.getSelection(a);var b=a.getAllRanges(),c;a.removeAllRanges();for(var d=0,e=b.length;d<e;++d){c=b[d];this.undoToRange(c);a.addRange(c)}},getTextSelectedByRange:function(a,b){var c=b.cloneRange();c.selectNodeContents(a);var d=c.intersection(b);d=d?d.toString():
"";c.detach();return d},isAppliedToRange:function(a){if(a.collapsed)return!!this.getSelfOrAncestorWithClass(a.commonAncestorContainer);else{for(var b=a.getNodes([3]),c=0,d;d=b[c++];)if(!this.isIgnorableWhiteSpaceNode(d)&&y(a,d)&&this.isModifiable(d)&&!this.getSelfOrAncestorWithClass(d))return false;return true}},isAppliedToSelection:function(a){a=a||window;a=i.getSelection(a).getAllRanges();for(var b=a.length;b--;)if(!this.isAppliedToRange(a[b]))return false;return true},toggleRange:function(a){this.isAppliedToRange(a)?
this.undoToRange(a):this.applyToRange(a)},toggleSelection:function(a){this.isAppliedToSelection(a)?this.undoToSelection(a):this.applyToSelection(a)},detach:function(){}};q.util={hasClass:r,addClass:s,removeClass:H,hasSameClasses:w,replaceWithOwnChildren:x,elementsHaveSameNonClassAttributes:A,elementHasNonClassAttributes:B,splitNodeAt:m,isEditableElement:k,isEditingHost:C,isEditable:D};i.CssClassApplier=q;i.createCssClassApplier=function(a,b,c){return new q(a,b,c)}});
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