updating sendkeys, this version will be broken

tests/frontend/lib/sendkeys.js

@@ -1,199 +1,416 @@
-// Cross-broswer implementation of text ranges and selections
+'use strict';
-// documentation: http://bililite.com/blog/2011/01/11/cross-browser-.and-selections/
-// Version: 1.1
-// Copyright (c) 2010 Daniel Wachsstock
-// MIT license:
-// Permission is hereby granted, free of charge, to any person
-// obtaining a copy of this software and associated documentation
-// files (the "Software"), to deal in the Software without
-// restriction, including without limitation the rights to use,
-// copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the
-// Software is furnished to do so, subject to the following
-// conditions:
 
-// The above copyright notice and this permission notice shall be
+let bililiteRange; // create one global variable
-// included in all copies or substantial portions of the Software.
 
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+(function(){
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-// OTHER DEALINGS IN THE SOFTWARE.
 
-(function($){
+const datakey = Symbol(); // use as the key to modify elements.
 
-bililiteRange = function(el, debug){
+bililiteRange = function(el){
 	var ret;
-  if (debug){
+	if (el.setSelectionRange){
-    ret = new NothingRange(); // Easier to force it to use the no-selection type than to try to find an old browser
+		// Element is an input or textarea
-  }else if (document.selection && !document.addEventListener){
+		// note that some input elements do not allow selections
-    // Internet Explorer 8 and lower
+		try{
-    ret = new IERange();
+			el.selectionStart = el.selectionStart;
-  }else if (window.getSelection && el.setSelectionRange){
-    // Standards. Element is an input or textarea
 			ret = new InputRange();
-  }else if (window.getSelection){
+		}catch(e){
-    // Standards, with any other kind of element
-    ret = new W3CRange()
-  }else{
-    // doesn't support selection
 			ret = new NothingRange();
 		}
+	}else{
+		// Standards, with any other kind of element
+		ret = new W3CRange();
+	}
 	ret._el = el;
+	// determine parent document, as implemented by John McLear <john@mclear.co.uk>
 	ret._doc = el.ownerDocument;
-  ret._win = 'defaultView' in ret._doc ? ret._doc.defaultView : ret._doc.parentWindow;
+	ret._win = ret._doc.defaultView;
-  ret._textProp = textProp(el);
+	ret._bounds = [0, ret.length];
-  ret._bounds = [0, ret.length()];
+
+	// selection tracking. We want clicks to set the selection to the clicked location but tabbing in or element.focus() should restore
+	// the selection to what it was.
+	// There's no good way to do this. I just assume that a mousedown (or a drag and drop
+	// into the element) within 100 ms of the focus event must have caused the focus, and
+	// therefore we should not restore the selection.
+	if (!(el[datakey])){ // we haven't processed this element yet
+		const data = createDataObject (el);
+		startupHooks.forEach ( hook => hook (el, ret, data) );
+	}
 	return ret;
 }
 
-function textProp(el){
+bililiteRange.version = 3.2;
-  // returns the property that contains the text of the element
+
-  if (typeof el.value != 'undefined') return 'value';
+const startupHooks = new Set();
-  if (typeof el.text != 'undefined') return 'text';
+bililiteRange.addStartupHook = fn => startupHooks.add(fn);
-  if (typeof el.textContent != 'undefined') return 'textContent';
+startupHooks.add (trackSelection);
-  return 'innerText';
+startupHooks.add (fixInputEvents);
+startupHooks.add (correctNewlines);
+
+function trackSelection (element, range, data){
+	data.selection = [0,0];
+	range.listen('focusout', evt => data.selection = range._nativeSelection() );
+	range.listen('mousedown', evt => data.mousetime = evt.timeStamp );
+	range.listen('drop', evt => data.mousetime = evt.timeStamp );
+	range.listen('focus', evt => {
+		if ('mousetime' in data && evt.timeStamp - data.mousetime < 100) return;
+		range._nativeSelect(range._nativeRange(data.selection))
+	})
+}
+
+function fixInputEvents (element, range, data){
+	// DOM 3 input events, https://www.w3.org/TR/input-events-1/
+	// have a data field with the text inserted, but thatisn't enough to fully describe the change;
+	// we need to know the old text (or at least its length)
+	// and *where* the new text was inserted.
+	// So we enhance input events with that information.
+	// the "newText" should always be the same as the 'data' field, if it is defined
+	data.oldText = range.all();
+	data.liveRanges = new Set();
+	range.listen('input', evt => {
+		const newText = range.all();
+		if (!evt.bililiteRange){
+			evt.bililiteRange = diff (data.oldText, newText);
+			if (evt.bililiteRange.unchanged){
+				// no change. Assume that whatever happened, happened at the selection point (and use whatever data the browser gives us).
+				evt.bililiteRange.start = range.clone().bounds('selection')[1] - (evt.data || '').length;
+			}
+		}
+		data.oldText = newText;
+
+		// Also update live ranges on this element
+		data.liveRanges.forEach( rng => {
+			const start = evt.bililiteRange.start;
+			const oldend = start + evt.bililiteRange.oldText.length;
+			const newend = start + evt.bililiteRange.newText.length;
+			// adjust bounds; this tries to emulate the algorithm that Microsoft Word uses for bookmarks
+			let [b0, b1] = rng.bounds();
+			if (b0 <= start){
+				// no change
+			}else if (b0 > oldend){
+				b0  += newend - oldend;
+			}else{
+				b0  = newend;
+			}
+			if (b1 < start){
+				// no change
+			}else if (b1 >= oldend){
+				b1 += newend - oldend;
+			}else{
+				b1 = start;
+			}
+			rng.bounds([b0, b1]);
+		})
+	});
+}
+
+function diff (oldText, newText){
+	// Try to find the changed text, assuming it was a continuous change
+	if (oldText == newText){
+		return {
+			unchanged: true,
+			start: 0,
+			oldText,
+			newText
+		}
+	}
+
+	const oldlen = oldText.length;
+	const	newlen = newText.length;
+	for (var i = 0; i < newlen && i < oldlen; ++i){
+		if (newText.charAt(i) != oldText.charAt(i)) break;
+	}
+	const start = i;
+	for (i = 0; i < newlen && i < oldlen; ++i){
+		let newpos = newlen-i-1, oldpos = oldlen-i-1;
+		if (newpos < start || oldpos < start) break;
+		if (newText.charAt(newpos) != oldText.charAt(oldpos)) break;
+	}
+	const oldend = oldlen-i;
+	const newend = newlen-i;
+	return {
+		start,
+		oldText: oldText.slice(start, oldend),
+		newText: newText.slice(start, newend)
+	}
+};
+bililiteRange.diff = diff; // expose
+
+function correctNewlines (element, range, data){
+	// we need to insert newlines rather than create new elements, so character-based calculations work
+	range.listen('paste', evt => {
+		if (evt.defaultPrevented) return;
+		// windows adds \r's to clipboard!
+		range.clone().bounds('selection').
+			text(evt.clipboardData.getData("text/plain").replace(/\r/g,''), {inputType: 'insertFromPaste'}).
+			bounds('endbounds').
+			select().
+			scrollIntoView();
+		evt.preventDefault();
+	});
+	range.listen('keydown', function(evt){
+		if (evt.ctrlKey || evt.altKey || evt.shiftKey || evt.metaKey) return;
+		if (evt.defaultPrevented) return;
+		if (evt.key == 'Enter'){
+			range.clone().bounds('selection').
+				text('\n', {inputType: 'insertLineBreak'}).
+				bounds('endbounds').
+				select().
+				scrollIntoView();
+			evt.preventDefault();
+		}
+	});
+}
+
+// convenience function for defining input events
+function inputEventInit(type, oldText, newText, start, inputType){
+	return {
+		type,
+		inputType,
+		data: newText,
+		bubbles: true,
+		bililiteRange: {
+			unchanged: (oldText == newText),
+			start,
+			oldText,
+			newText
+		}
+	};
 }
 
 // base class
 function Range(){}
 Range.prototype = {
-  length: function() {
+	 // allow use of range[0] and range[1] for start and end of bounds
-    return this._el[this._textProp].replace(/\r/g, '').length; // need to correct for IE's CrLf weirdness
+	get 0(){
+		return this.bounds()[0];
+	},
+	set 0(x){
+		this.bounds([x, this[1]]);
+		return x;
+	},
+	get 1(){
+		return this.bounds()[1];
+	},
+	set 1(x){
+		this.bounds([this[0], x]);
+		return x;
+	},
+	all: function(text){
+		if (arguments.length){
+			return this.bounds('all').text(text, {inputType: 'insertReplacementText'});
+		}else{
+			return this._el[this._textProp];
+		}
 	},
 	bounds: function(s){
-    if (s === 'all'){
+		if (typeof s === 'number'){
-      this._bounds = [0, this.length()];
+			this._bounds = [s,s];
-    }else if (s === 'start'){
+		}else if (bililiteRange.bounds[s]){
-      this._bounds = [0, 0];
+			this.bounds(bililiteRange.bounds[s].apply(this, arguments));
-    }else if (s === 'end'){
+		}else if (s && s.bounds){
-      this._bounds = [this.length(), this.length()];
+			this._bounds = s.bounds(); // copy bounds from an existing range
-    }else if (s === 'selection'){
-      this.bounds ('all'); // first select the whole thing for constraining
-      this._bounds = this._nativeSelection();
 		}else if (s){
-      this._bounds = s; // don't error check now; the element may change at any moment, so constrain it when we need it.
+			this._bounds = s; // don't do error checking now; things may change at a moment's notice
 		}else{
+			// constrain bounds now
 			var b = [
-        Math.max(0, Math.min (this.length(), this._bounds[0])),
+				Math.max(0, Math.min (this.length, this._bounds[0])),
-        Math.max(0, Math.min (this.length(), this._bounds[1]))
+				Math.max(0, Math.min (this.length, this._bounds[1]))
 			];
-      return b; // need to constrain it to fit
+			b[1] = Math.max(b[0], b[1]);
+			return b;
 		}
 		return this; // allow for chaining
 	},
+	clone: function(){
+		return bililiteRange(this._el).bounds(this.bounds());
+	},
+	get data(){
+		return this._el[datakey];
+	},
+	dispatch: function(opts = {}){
+		var event = new Event (opts.type, opts);
+		event.view = this._win;
+		for (let prop in opts) try { event[prop] = opts[prop] } catch(e){}; // ignore read-only errors for properties that were copied in the previous line
+		this._el.dispatchEvent(event); // note that the event handlers will be called synchronously, before the "return this;"
+		return this;
+	},
+	get document() {
+		return this._doc;
+	},
+	dontlisten: function (type, func = console.log){
+		this._el.removeEventListener(type, func);
+		return this;
+	},
+	get element() {
+		return this._el
+	},
+	get length() {
+		return this._el[this._textProp].length;
+	},
+	live (on = true){
+		this.data.liveRanges[on ? 'add' : 'delete'](this);
+		return this;
+	},
+	listen: function (type, func = console.log){
+		this._el.addEventListener(type, func);
+		return this;
+	},
+	scrollIntoView: function(scroller = (top => this._el.scrollTop = top) ){
+		var top = this.top();
+		// scroll into position if necessary
+		if (this._el.scrollTop > top || this._el.scrollTop+this._el.clientHeight < top){
+			scroller.call(this._el, top);
+		}
+		return this;
+	},
 	select: function(){
-    this._nativeSelect(this._nativeRange(this.bounds()));
+		var b = this.data.selection = this.bounds();
+		if (this._el === this._doc.activeElement){
+			// only actually select if this element is active!
+			this._nativeSelect(this._nativeRange(b));
+		}
+		this.dispatch({type: 'select', bubbles: true});
 		return this; // allow for chaining
 	},
-  text: function(text, select){
+	selection: function(text){
 		if (arguments.length){
-      this._nativeSetText(text, this._nativeRange(this.bounds()));
+			return this.bounds('selection').text(text).bounds('endbounds').select();
-      if (select == 'start'){
+		}else{
-        this.bounds ([this._bounds[0], this._bounds[0]]);
+			return this.bounds('selection').text();
-        this.select();
-      }else if (select == 'end'){
-        this.bounds ([this._bounds[0]+text.length, this._bounds[0]+text.length]);
-        this.select();
-      }else if (select == 'all'){
-        this.bounds ([this._bounds[0], this._bounds[0]+text.length]);
-        this.select();
 		}
+	},
+	sendkeys: function (text){
+		this.data.sendkeysOriginalText = this.text();
+		this.data.sendkeysBounds = undefined;
+		function simplechar (rng, c){
+			if (/^{[^}]*}$/.test(c)) c = c.slice(1,-1);	// deal with unknown {key}s
+			rng.text(c).bounds('endbounds');
+		}
+		text.replace(/{[^}]*}|[^{]+|{/g, part => (bililiteRange.sendkeys[part] || simplechar)(this, part, simplechar) );
+		this.bounds(this.data.sendkeysBounds);
+		this.dispatch({type: 'sendkeys', detail: text});
+		return this;
+	},
+	text: function(text, {inputType = 'insertText'} = {}){
+		if ( text !== undefined ){
+			let eventparams = [this.text(), text, this[0], inputType];
+			this.dispatch (inputEventInit('beforeinput',...eventparams));
+			this._nativeSetText(text, this._nativeRange(this.bounds()));
+			this[1] = this[0]+text.length;
+			this.dispatch (inputEventInit('input',...eventparams));
 			return this; // allow for chaining
 		}else{
 			return this._nativeGetText(this._nativeRange(this.bounds()));
 		}
 	},
-  insertEOL: function (){
+	top: function(){
-    this._nativeEOL();
+		return this._nativeTop(this._nativeRange(this.bounds()));
-    this._bounds = [this._bounds[0]+1, this._bounds[0]+1]; // move past the EOL marker
+	},
+	get window() {
+		return this._win;
+	},
+	wrap: function (n){
+		this._nativeWrap(n, this._nativeRange(this.bounds()));
 		return this;
+	},
+};
+
+// allow extensions ala jQuery
+bililiteRange.prototype = Range.prototype;
+bililiteRange.extend = function(fns){
+	Object.assign(bililiteRange.prototype, fns);
+};
+
+bililiteRange.override = (name, fn) => {
+	const oldfn = bililiteRange.prototype[name];
+	bililiteRange.prototype[name] = function(){
+		const oldsuper = this.super;
+		this.super = oldfn;
+		const ret = fn.apply(this, arguments);
+		this.super = oldsuper;
+		return ret;
+	};
+}
+
+//bounds functions
+bililiteRange.bounds = {
+	all: function() { return [0, this.length] },
+	start: function() { return 0 },
+	end: function() { return this.length },
+	selection: function() {
+		if (this._el === this._doc.activeElement){
+			this.bounds ('all'); // first select the whole thing for constraining
+			return this._nativeSelection();
+		}else{
+			return this.data.selection;
+		}
+	},
+	startbounds: function() { return  this[0] },
+	endbounds: function() { return  this[1] },
+	union: function (name,...rest) {
+		const b = this.clone().bounds(...rest);
+		return [ Math.min(this[0], b[0]), Math.max(this[1], b[1]) ];
+	},
+	intersection: function (name,...rest) {
+		const b = this.clone().bounds(...rest);
+		return [ Math.max(this[0], b[0]), Math.min(this[1], b[1]) ];
 	}
 };
 
-
+// sendkeys functions
-function IERange(){}
+bililiteRange.sendkeys = {
-IERange.prototype = new Range();
+	'{tab}': function (rng, c, simplechar){
-IERange.prototype._nativeRange = function (bounds){
+		simplechar(rng, '\t'); // useful for inserting what would be whitespace
-  var rng;
+	},
-  if (this._el.tagName == 'INPUT'){
+	'{newline}': function (rng){
-    // IE 8 is very inconsistent; textareas have createTextRange but it doesn't work
+		rng.text('\n', {inputType: 'insertLineBreak'}).bounds('endbounds');
-    rng = this._el.createTextRange();
+	},
-  }else{
+	'{backspace}': function (rng){
-    rng = this._doc.body.createTextRange ();
+		var b = rng.bounds();
-    rng.moveToElementText(this._el);
+		if (b[0] == b[1]) rng.bounds([b[0]-1, b[0]]); // no characters selected; it's just an insertion point. Remove the previous character
-  }
+		rng.text('', {inputType: 'deleteContentBackward'}); // delete the characters and update the selection
-  if (bounds){
+	},
-    if (bounds[1] < 0) bounds[1] = 0; // IE tends to run elements out of bounds
+	'{del}': function (rng){
-    if (bounds[0] > this.length()) bounds[0] = this.length();
+		var b = rng.bounds();
-    if (bounds[1] < rng.text.replace(/\r/g, '').length){ // correct for IE's CrLf wierdness
+		if (b[0] == b[1]) rng.bounds([b[0], b[0]+1]); // no characters selected; it's just an insertion point. Remove the next character
-      // block-display elements have an invisible, uncounted end of element marker, so we move an extra one and use the current length of the range
+		rng.text('', {inputType: 'deleteContentForward'}).bounds('endbounds'); // delete the characters and update the selection
-      rng.moveEnd ('character', -1);
+	},
-      rng.moveEnd ('character', bounds[1]-rng.text.replace(/\r/g, '').length);
+	'{rightarrow}':  function (rng){
-    }
+		var b = rng.bounds();
-    if (bounds[0] > 0) rng.moveStart('character', bounds[0]);
+		if (b[0] == b[1]) ++b[1]; // no characters selected; it's just an insertion point. Move to the right
-  }
+		rng.bounds([b[1], b[1]]);
-  return rng;
+	},
-};
+	'{leftarrow}': function (rng){
-IERange.prototype._nativeSelect = function (rng){
+		var b = rng.bounds();
-  rng.select();
+		if (b[0] == b[1]) --b[0]; // no characters selected; it's just an insertion point. Move to the left
-};
+		rng.bounds([b[0], b[0]]);
-IERange.prototype._nativeSelection = function (){
+	},
-  // returns [start, end] for the selection constrained to be in element
+	'{selectall}': function (rng){
-  var rng = this._nativeRange(); // range of the element to constrain to
+		rng.bounds('all');
-  var len = this.length();
+	},
-  if (this._doc.selection.type != 'Text') return [0,0]; // append to the end
+	'{selection}': function (rng){
-  var sel = this._doc.selection.createRange();
+		// insert the characters without the sendkeys processing
-  try{
+		rng.text(rng.data.sendkeysOriginalText).bounds('endbounds');
-    return [
+	},
-      iestart(sel, rng),
+	'{mark}': function (rng){
-      ieend (sel, rng)
+		rng.data.sendkeysBounds = rng.bounds();
-    ];
-  }catch (e){
-    // IE gets upset sometimes about comparing text to input elements, but the selections cannot overlap, so make a best guess
-    return (sel.parentElement().sourceIndex < this._el.sourceIndex) ? [0,0] : [len, len];
 	}
 };
-IERange.prototype._nativeGetText = function (rng){
+// Synonyms from the DOM standard (http://www.w3.org/TR/DOM-Level-3-Events-key/)
-  return rng.text.replace(/\r/g, ''); // correct for IE's CrLf weirdness
+bililiteRange.sendkeys['{Enter}'] = bililiteRange.sendkeys['{enter}'] = bililiteRange.sendkeys['{newline}'];
-};
+bililiteRange.sendkeys['{Backspace}'] = bililiteRange.sendkeys['{backspace}'];
-IERange.prototype._nativeSetText = function (text, rng){
+bililiteRange.sendkeys['{Delete}'] = bililiteRange.sendkeys['{del}'];
-  rng.text = text;
+bililiteRange.sendkeys['{ArrowRight}'] = bililiteRange.sendkeys['{rightarrow}'];
-};
+bililiteRange.sendkeys['{ArrowLeft}'] = bililiteRange.sendkeys['{leftarrow}'];
-IERange.prototype._nativeEOL = function(){
-  if (typeof this._el.value != 'undefined'){
-    this.text('\n'); // for input and textarea, insert it straight
-  }else{
-    this._nativeRange(this.bounds()).pasteHTML('<br/>');
-  }
-};
-// IE internals
-function iestart(rng, constraint){
-  // returns the position (in character) of the start of rng within constraint. If it's not in constraint, returns 0 if it's before, length if it's after
-  var len = constraint.text.replace(/\r/g, '').length; // correct for IE's CrLf wierdness
-  if (rng.compareEndPoints ('StartToStart', constraint) <= 0) return 0; // at or before the beginning
-  if (rng.compareEndPoints ('StartToEnd', constraint) >= 0) return len;
-  for (var i = 0; rng.compareEndPoints ('StartToStart', constraint) > 0; ++i, rng.moveStart('character', -1));
-  return i;
-}
-function ieend (rng, constraint){
-  // returns the position (in character) of the end of rng within constraint. If it's not in constraint, returns 0 if it's before, length if it's after
-  var len = constraint.text.replace(/\r/g, '').length; // correct for IE's CrLf wierdness
-  if (rng.compareEndPoints ('EndToEnd', constraint) >= 0) return len; // at or after the end
-  if (rng.compareEndPoints ('EndToStart', constraint) <= 0) return 0;
-  for (var i = 0; rng.compareEndPoints ('EndToStart', constraint) > 0; ++i, rng.moveEnd('character', -1));
-  return i;
-}
 
 // an input element in a standards document. "Native Range" is just the bounds array
 function InputRange(){}
 InputRange.prototype = new Range();
+InputRange.prototype._textProp = 'value';
 InputRange.prototype._nativeRange = function(bounds) {
-  return bounds || [0, this.length()];
+	return bounds || [0, this.length];
 };
 InputRange.prototype._nativeSelect = function (rng){
 	this._el.setSelectionRange(rng[0], rng[1]);
@@ -211,9 +428,27 @@ InputRange.prototype._nativeSetText = function(text, rng){
 InputRange.prototype._nativeEOL = function(){
 	this.text('\n');
 };
+InputRange.prototype._nativeTop = function(rng){
+	if (rng[0] == 0) return 0; // the range starts at the top
+	// I can't remember where I found this clever hack to find the location of text in a text area
+	var clone = this._el.cloneNode(true);
+	clone.style.visibility = 'hidden';
+	clone.style.position = 'absolute';
+	this._el.parentNode.insertBefore(clone, this._el);
+	clone.style.height = '1px';
+	clone.value = this._el.value.slice(0, rng[0]);
+	var top = clone.scrollHeight;
+	// this gives the bottom of the text, so we have to subtract the height of a single line
+	clone.value = 'X';
+	top -= clone.scrollHeight;
+	clone.parentNode.removeChild(clone);
+	return top;
+}
+InputRange.prototype._nativeWrap = function() {throw new Error("Cannot wrap in a text element")};
 
 function W3CRange(){}
 W3CRange.prototype = new Range();
+W3CRange.prototype._textProp = 'textContent';
 W3CRange.prototype._nativeRange = function (bounds){
 	var rng = this._doc.createRange();
 	rng.selectNodeContents(this._el);
@@ -231,13 +466,13 @@ W3CRange.prototype._nativeSelect = function (rng){
 W3CRange.prototype._nativeSelection = function (){
 	// returns [start, end] for the selection constrained to be in element
 	var rng = this._nativeRange(); // range of the element to constrain to
-    if (this._win.getSelection().rangeCount == 0) return [this.length(), this.length()]; // append to the end
+	if (this._win.getSelection().rangeCount == 0) return [this.length, this.length]; // append to the end
 	var sel = this._win.getSelection().getRangeAt(0);
 	return [
 		w3cstart(sel, rng),
 		w3cend (sel, rng)
 	];
-  }
+};
 W3CRange.prototype._nativeGetText = function (rng){
 	return rng.toString();
 };
@@ -255,6 +490,21 @@ W3CRange.prototype._nativeEOL = function(){
 	rng.insertNode (this._doc.createTextNode('\n'));
 	rng.collapse (false);
 };
+W3CRange.prototype._nativeTop = function(rng){
+	if (this.length == 0) return 0; // no text, no scrolling
+	if (rng.toString() == ''){
+		var textnode = this._doc.createTextNode('X');
+		rng.insertNode (textnode);
+	}
+	var startrng = this._nativeRange([0,1]);
+	var top = rng.getBoundingClientRect().top - startrng.getBoundingClientRect().top;
+	if (textnode) textnode.parentNode.removeChild(textnode);
+	return top;
+}
+W3CRange.prototype._nativeWrap = function(n, rng) {
+	rng.surroundContents(n);
+};
+
 // W3C internals
 function nextnode (node, root){
 	//  in-order traversal
@@ -281,10 +531,11 @@ function w3cmoveBoundary (rng, n, bStart, el){
 	}
 	while (node){
 		if (node.nodeType == 3){
-      if (n <= node.nodeValue.length){
+			var length = node.nodeValue.length;
+			if (n <= length){
 				rng[bStart ? 'setStart' : 'setEnd'](node, n);
 				// special case: if we end next to a <br>, include that node.
-        if (n == node.nodeValue.length){
+				if (n == length){
 					// skip past zero-length text nodes
 					for (var next = nextnode (node, el); next && next.nodeType==3 && next.nodeValue.length == 0; next = nextnode(next, el)){
 						rng[bStart ? 'setStartAfter' : 'setEndAfter'](next);
@@ -294,7 +545,7 @@ function w3cmoveBoundary (rng, n, bStart, el){
 				return;
 			}else{
 				rng[bStart ? 'setStartAfter' : 'setEndAfter'](node); // skip past this one
-        n -= node.nodeValue.length; // and eat these characters
+				n -= length; // and eat these characters
 			}
 		}
 		node = nextnode (node, el);
@@ -327,8 +578,9 @@ function w3cend (rng, constraint){
 
 function NothingRange(){}
 NothingRange.prototype = new Range();
+NothingRange.prototype._textProp = 'value';
 NothingRange.prototype._nativeRange = function(bounds) {
-  return bounds || [0,this.length()];
+	return bounds || [0,this.length];
 };
 NothingRange.prototype._nativeSelect = function (rng){ // do nothing
 };
@@ -345,123 +597,72 @@ NothingRange.prototype._nativeSetText = function (text, rng){
 NothingRange.prototype._nativeEOL = function(){
 	this.text('\n');
 };
-
+NothingRange.prototype._nativeTop = function(){
-})(jQuery);
+	return 0;
-
-// insert characters in a textarea or text input field
-// special characters are enclosed in {}; use {{} for the { character itself
-// documentation: http://bililite.com/blog/2008/08/20/the-fnsendkeys-plugin/
-// Version: 2.0
-// Copyright (c) 2010 Daniel Wachsstock
-// MIT license:
-// Permission is hereby granted, free of charge, to any person
-// obtaining a copy of this software and associated documentation
-// files (the "Software"), to deal in the Software without
-// restriction, including without limitation the rights to use,
-// copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the
-// Software is furnished to do so, subject to the following
-// conditions:
-
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-// OTHER DEALINGS IN THE SOFTWARE.
-
-(function($){
-
-$.fn.sendkeys = function (x, opts){
-  return this.each( function(){
-    var localkeys = $.extend({}, opts, $(this).data('sendkeys')); // allow for element-specific key functions
-    // most elements to not keep track of their selection when they lose focus, so we have to do it for them
-    var rng = $.data (this, 'sendkeys.selection');
-    if (!rng){
-      rng = bililiteRange(this).bounds('selection');
-      $.data(this, 'sendkeys.selection', rng);
-      $(this).bind('mouseup.sendkeys', function(){
-        // we have to update the saved range. The routines here update the bounds with each press, but actual keypresses and mouseclicks do not
-        $.data(this, 'sendkeys.selection').bounds('selection');
-      }).bind('keyup.sendkeys', function(evt){
-        // restore the selection if we got here with a tab (a click should select what was clicked on)
-        if (evt.which == 9){
-          // there's a flash of selection when we restore the focus, but I don't know how to avoid that
-          $.data(this, 'sendkeys.selection').select();
-        }else{
-          $.data(this, 'sendkeys.selection').bounds('selection');
-        }
-      });
-    }
-    this.focus();
-    if (typeof x === 'undefined') return; // no string, so we just set up the event handlers
-    $.data(this, 'sendkeys.originalText', rng.text());
-    x.replace(/\n/g, '{enter}'). // turn line feeds into explicit break insertions
-      replace(/{[^}]*}|[^{]+/g, function(s){
-        (localkeys[s] || $.fn.sendkeys.defaults[s] || $.fn.sendkeys.defaults.simplechar)(rng, s);
-      });
-    $(this).trigger({type: 'sendkeys', which: x});
-  });
-}; // sendkeys
-
-
-// add the functions publicly so they can be overridden
-$.fn.sendkeys.defaults = {
-  simplechar: function (rng, s){
-    rng.text(s, 'end');
-    for (var i =0; i < s.length; ++i){
-      var x = s.charCodeAt(i);
-      // a bit of cheating: rng._el is the element associated with rng.
-      $(rng._el).trigger({type: 'keypress', keyCode: x, which: x, charCode: x});
-    }
-  },
-  '{{}': function (rng){
-    $.fn.sendkeys.defaults.simplechar (rng, '{')
-  },
-  '{enter}': function (rng){
-    rng.insertEOL();
-    rng.select();
-    var x = '\n'.charCodeAt(0);
-    $(rng._el).trigger({type: 'keypress', keyCode: x, which: x, charCode: x});
-  },
-  '{backspace}': function (rng){
-    var b = rng.bounds();
-    if (b[0] == b[1]) rng.bounds([b[0]-1, b[0]]); // no characters selected; it's just an insertion point. Remove the previous character
-    rng.text('', 'end'); // delete the characters and update the selection
-  },
-  '{del}': function (rng){
-    var b = rng.bounds();
-    if (b[0] == b[1]) rng.bounds([b[0], b[0]+1]); // no characters selected; it's just an insertion point. Remove the next character
-    rng.text('', 'end'); // delete the characters and update the selection
-  },
-  '{rightarrow}':  function (rng){
-    var b = rng.bounds();
-    if (b[0] == b[1]) ++b[1]; // no characters selected; it's just an insertion point. Move to the right
-    rng.bounds([b[1], b[1]]).select();
-  },
-  '{leftarrow}': function (rng){
-    var b = rng.bounds();
-    if (b[0] == b[1]) --b[0]; // no characters selected; it's just an insertion point. Move to the left
-    rng.bounds([b[0], b[0]]).select();
-  },
-  '{selectall}' : function (rng){
-    rng.bounds('all').select();
-  },
-  '{selection}': function (rng){
-    $.fn.sendkeys.defaults.simplechar(rng, $.data(rng._el, 'sendkeys.originalText'));
-  },
-  '{mark}' : function (rng){
-    var bounds = rng.bounds();
-    $(rng._el).one('sendkeys', function(){
-      // set up the event listener to change the selection after the sendkeys is done
-      rng.bounds(bounds).select();
-    });
-  }
 };
+NothingRange.prototype._nativeWrap = function() {throw new Error("Wrapping not implemented")};
 
-})(jQuery)
+
+// data for elements, similar to jQuery data, but allows for monitoring with custom events
+const monitored = new Set();
+
+function signalMonitor(prop, value, element){
+	const attr = `data-${prop}`;
+	element.dispatchEvent(new CustomEvent(attr, {bubbles: true, detail: value}));
+	try{
+		element.setAttribute (attr, value); // illegal attribute names will throw. Ignore it
+	} finally { /* ignore */ }
+}
+
+function createDataObject (el){
+	return el[datakey] = new Proxy(new Data(el), {
+		set(obj, prop, value) {
+			obj[prop] = value;
+			if (monitored.has(prop)) signalMonitor(prop, value, obj.sourceElement);
+			return true; // in strict mode, 'set' returns a success flag
+		}
+	});
+}
+
+var Data = function(el) {
+	Object.defineProperty(this, 'sourceElement', {
+		value: el
+	});
+}
+
+Data.prototype = {};
+// for use with ex options. JSON.stringify(range.data) should return only the options that were
+// both defined with bililiteRange.option() *and* actually had a value set on this particular data object.
+// JSON.stringify (range.data.all) should return all the options that were defined.
+Object.defineProperty(Data.prototype, 'toJSON', {
+	value: function(){
+		let ret = {};
+		for (let key in Data.prototype) if (this.hasOwnProperty(key)) ret[key] = this[key];
+		return ret;
+	}
+});
+Object.defineProperty(Data.prototype, 'all', {
+	get: function(){
+		let ret = {};
+		for (let key in Data.prototype) ret[key] = this[key];
+		return ret;
+	}
+});
+Object.defineProperty(Data.prototype, 'trigger', {
+	value: function(){
+		monitored.forEach(prop => signalMonitor (prop, this[prop], this.sourceElement));
+	}
+});
+
+bililiteRange.createOption = function (name, desc = {}){
+	desc = Object.assign({
+		enumerable: true, // use these as the defaults
+		writable: true,
+		configurable: true
+	}, Object.getOwnPropertyDescriptor(Data.prototype, name), desc);
+	if ('monitored' in desc) monitored[desc.monitored ? 'add' : 'delete'](name);
+	Object.defineProperty(Data.prototype, name, desc);
+	return Data.prototype[name]; // return the default value
+}
+
+})();