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?? Editing: rangy-selectionsaverestore.js

/**
 * Selection save and restore module for Rangy.
 * Saves and restores user selections using marker invisible elements in the DOM.
 *
 * Part of Rangy, a cross-browser JavaScript range and selection library
 * http://code.google.com/p/rangy/
 *
 * Depends on Rangy core.
 *
 * Copyright 2013, Tim Down
 * Licensed under the MIT license.
 * Version: 1.3alpha.804
 * Build date: 8 December 2013
 */
rangy.createModule("SaveRestore",["WrappedRange"],function(a,b){function e(a,b){return(b||document).getElementById(a)}function f(a,b){var e="selectionBoundary_"+ +(new Date)+"_"+(""+Math.random()).slice(2),f,g=c.getDocument(a.startContainer),h=a.cloneRange();return h.collapse(b),f=g.createElement("span"),f.id=e,f.style.lineHeight="0",f.style.display="none",f.className="rangySelectionBoundary",f.appendChild(g.createTextNode(d)),h.insertNode(f),h.detach(),f}function g(a,c,d,f){var g=e(d,a);g?(c[f?"setStartBefore":"setEndBefore"](g),g.parentNode.removeChild(g)):b.warn("Marker element has been removed. Cannot restore selection.")}function h(a,b){return b.compareBoundaryPoints(a.START_TO_START,a)}function i(b,c){var d,e,g=a.DomRange.getRangeDocument(b),h=b.toString();return b.collapsed?(e=f(b,!1),{document:g,markerId:e.id,collapsed:!0}):(e=f(b,!1),d=f(b,!0),{document:g,startMarkerId:d.id,endMarkerId:e.id,collapsed:!1,backward:c,toString:function(){return"original text: '"+h+"', new text: '"+b.toString()+"'"}})}function j(c,d){var f=c.document;typeof d=="undefined"&&(d=!0);var h=a.createRange(f);if(c.collapsed){var i=e(c.markerId,f);if(i){i.style.display="inline";var j=i.previousSibling;j&&j.nodeType==3?(i.parentNode.removeChild(i),h.collapseToPoint(j,j.length)):(h.collapseBefore(i),i.parentNode.removeChild(i))}else b.warn("Marker element has been removed. Cannot restore selection.")}else g(f,h,c.startMarkerId,!0),g(f,h,c.endMarkerId,!1);return d&&h.normalizeBoundaries(),h}function k(b,c){var d=[],f,g;b=b.slice(0),b.sort(h);for(var j=0,k=b.length;j<k;++j)d[j]=i(b[j],c);for(j=k-1;j>=0;--j)f=b[j],g=a.DomRange.getRangeDocument(f),f.collapsed?f.collapseAfter(e(d[j].markerId,g)):(f.setEndBefore(e(d[j].endMarkerId,g)),f.setStartAfter(e(d[j].startMarkerId,g)));return d}function l(c){if(!a.isSelectionValid(c))return b.warn("Cannot save selection. This usually happens when the selection is collapsed and the selection document has lost focus."),null;var d=a.getSelection(c),e=d.getAllRanges(),f=e.length==1&&d.isBackward(),g=k(e,f);return f?d.setSingleRange(e[0],"backward"):d.setRanges(e),{win:c,rangeInfos:g,restored:!1}}function m(a){var b=[],c=a.length;for(var d=c-1;d>=0;d--)b[d]=j(a[d],!0);return b}function n(b,c){if(!b.restored){var d=b.rangeInfos,e=a.getSelection(b.win),f=m(d),g=d.length;g==1&&c&&a.features.selectionHasExtend&&d[0].backward?(e.removeAllRanges(),e.addRange(f[0],!0)):e.setRanges(f),b.restored=!0}}function o(a,b){var c=e(b,a);c&&c.parentNode.removeChild(c)}function p(a){var b=a.rangeInfos;for(var c=0,d=b.length,e;c<d;++c)e=b[c],e.collapsed?o(a.doc,e.markerId):(o(a.doc,e.startMarkerId),o(a.doc,e.endMarkerId))}var c=a.dom,d="\ufeff";a.util.extend(a,{saveRange:i,restoreRange:j,saveRanges:k,restoreRanges:m,saveSelection:l,restoreSelection:n,removeMarkerElement:o,removeMarkers:p})})

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?? Editing: rangy-selectionsaverestore.js

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