Function restoreSelection

lib/assets/react-source/development/react.js:10681–10715

* @restoreSelection: If any selection information was potentially lost, * restore it. This is useful when performing operations that could remove dom * nodes and place them back in, resulting in focus being lost.

(priorSelectionInformation)

	 */

	function restoreSelection(priorSelectionInformation) {
	  var curFocusedElem = getActiveElementDeep();
	  var priorFocusedElem = priorSelectionInformation.focusedElem;
	  var priorSelectionRange = priorSelectionInformation.selectionRange;

	  if (curFocusedElem !== priorFocusedElem && isInDocument(priorFocusedElem)) {
	    if (priorSelectionRange !== null && hasSelectionCapabilities(priorFocusedElem)) {
	      setSelection(priorFocusedElem, priorSelectionRange);
	    } // Focusing a node can change the scroll position, which is undesirable


	    var ancestors = [];
	    var ancestor = priorFocusedElem;

	    while (ancestor = ancestor.parentNode) {
	      if (ancestor.nodeType === ELEMENT_NODE) {
	        ancestors.push({
	          element: ancestor,
	          left: ancestor.scrollLeft,
	          top: ancestor.scrollTop
	        });
	      }
	    }

	    if (typeof priorFocusedElem.focus === 'function') {
	      priorFocusedElem.focus();
	    }

	    for (var i = 0; i < ancestors.length; i++) {
	      var info = ancestors[i];
	      info.element.scrollLeft = info.left;
	      info.element.scrollTop = info.top;
	    }
	  }
	}
	/**
	 * @getSelection: Gets the selection bounds of a focused textarea, input or
	 * contentEditable node.