mirrors/etherpad-lite
1
0
Fork 0
mirror of https://github.com/ether/etherpad-lite.git synced 2025-05-05 22:57:11 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions 52

sendkeys: Split into separate files to match upstream

Browse source
This commit is contained in:
Richard Hansen 2021-08-20 20:49:50 -04:00 • committed by SamTV12345
parent ea556c4150
commit 0900354980
4 changed files with 126 additions and 121 deletions
Download patch file Download diff file Expand all files Collapse all files

406
src/tests/frontend/lib/bililiteRange.js Normal file
View file

@ -0,0 +1,406 @@
// Cross-broswer implementation of text ranges and selections
// documentation: http://bililite.com/blog/2011/01/17/cross-browser-text-ranges-and-selections/
// Version: 1.5
// 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(){
bililiteRange = function(el, debug){
var ret;
if (debug){
ret = new NothingRange(); // Easier to force it to use the no-selection type than to try to find an old browser
}else if (document.selection && !document.addEventListener){
// Internet Explorer 8 and lower
ret = new IERange();
}else if (window.getSelection && el.setSelectionRange){
// Standards. Element is an input or textarea
ret = new InputRange();
}else if (window.getSelection){
// Standards, with any other kind of element
ret = new W3CRange()
}else{
// doesn't support selection
ret = new NothingRange();
}
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._textProp = textProp(el);
ret._bounds = [0, ret.length()];
return ret;
}
function textProp(el){
// returns the property that contains the text of the element
if (typeof el.value != 'undefined') return 'value';
if (typeof el.text != 'undefined') return 'text';
if (typeof el.textContent != 'undefined') return 'textContent';
return 'innerText';
}
// base class
function Range(){}
Range.prototype = {
length: function() {
return this._el[this._textProp].replace(/\r/g, '').length; // need to correct for IE's CrLf weirdness
},
bounds: function(s){
if (s === 'all'){
this._bounds = [0, this.length()];
}else if (s === 'start'){
this._bounds = [0, 0];
}else if (s === 'end'){
this._bounds = [this.length(), this.length()];
}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 do error checking now; things may change at a moment's notice
}else{
var b = [
Math.max(0, Math.min (this.length(), this._bounds[0])),
Math.max(0, Math.min (this.length(), this._bounds[1]))
];
b[1] = Math.max(b[0], b[1]);
return b; // need to constrain it to fit
}
return this; // allow for chaining
},
select: function(){
this._nativeSelect(this._nativeRange(this.bounds()));
return this; // allow for chaining
},
text: function(text, select){
if (arguments.length){
this._nativeSetText(text, this._nativeRange(this.bounds()));
try { // signal the text change (IE < 9 doesn't support this, so we live with it)
this._el.dispatchEvent(new CustomEvent('input', {detail: {text: text, bounds: this.bounds()}}));
}catch(e){ /* ignore */ }
if (select == 'start'){
this.bounds ([this._bounds[0], this._bounds[0]]);
}else if (select == 'end'){
this.bounds ([this._bounds[0]+text.length, this._bounds[0]+text.length]);
}else if (select == 'all'){
this.bounds ([this._bounds[0], this._bounds[0]+text.length]);
}
return this; // allow for chaining
}else{
return this._nativeGetText(this._nativeRange(this.bounds()));
}
},
insertEOL: function (){
this._nativeEOL();
this._bounds = [this._bounds[0]+1, this._bounds[0]+1]; // move past the EOL marker
return this;
},
scrollIntoView: function(){
this._nativeScrollIntoView(this._nativeRange(this.bounds()));
return this;
}
};
// allow extensions ala jQuery
bililiteRange.fn = Range.prototype; // to allow monkey patching
bililiteRange.extend = function(fns){
for (fn in fns) Range.prototype[fn] = fns[fn];
};
function IERange(){}
IERange.prototype = new Range();
IERange.prototype._nativeRange = function (bounds){
var rng;
if (this._el.tagName == 'INPUT'){
// IE 8 is very inconsistent; textareas have createTextRange but it doesn't work
rng = this._el.createTextRange();
}else{
rng = this._doc.body.createTextRange ();
rng.moveToElementText(this._el);
}
if (bounds){
if (bounds[1] < 0) bounds[1] = 0; // IE tends to run elements out of bounds
if (bounds[0] > this.length()) bounds[0] = this.length();
if (bounds[1] < rng.text.replace(/\r/g, '').length){ // correct for IE's CrLf wierdness
// 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.moveEnd ('character', -1);
rng.moveEnd ('character', bounds[1]-rng.text.replace(/\r/g, '').length);
}
if (bounds[0] > 0) rng.moveStart('character', bounds[0]);
}
return rng;
};
IERange.prototype._nativeSelect = function (rng){
rng.select();
};
IERange.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
var len = this.length();
if (this._doc.selection.type != 'Text') return [len, len]; // append to the end
var sel = this._doc.selection.createRange();
try{
return [
iestart(sel, rng),
ieend (sel, rng)
];
}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){
return rng.text.replace(/\r/g, ''); // correct for IE's CrLf weirdness
};
IERange.prototype._nativeSetText = function (text, rng){
rng.text = text;
};
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/>');
}
};
IERange.prototype._nativeScrollIntoView = function(rng){
rng.scrollIntoView();
}
// 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._nativeRange = function(bounds) {
return bounds || [0, this.length()];
};
InputRange.prototype._nativeSelect = function (rng){
this._el.setSelectionRange(rng[0], rng[1]);
};
InputRange.prototype._nativeSelection = function(){
return [this._el.selectionStart, this._el.selectionEnd];
};
InputRange.prototype._nativeGetText = function(rng){
return this._el.value.substring(rng[0], rng[1]);
};
InputRange.prototype._nativeSetText = function(text, rng){
var val = this._el.value;
this._el.value = val.substring(0, rng[0]) + text + val.substring(rng[1]);
};
InputRange.prototype._nativeEOL = function(){
this.text('\n');
};
InputRange.prototype._nativeScrollIntoView = function(rng){
// I can't remember where I found this clever hack to find the location of text in a text area
var style = getComputedStyle(this._el);
var oldheight = style.height;
var oldval = this._el.value;
var oldselection = this._nativeSelection();
this._el.style.height = '1px';
this._el.value = oldval.slice(0, rng[0]);
var top = this._el.scrollHeight;
// this gives the bottom of the text, so we have to subtract the height of a single line
this._el.value = 'X';
top -= 2*this._el.scrollHeight; // show at least a line above
this._el.style.height = oldheight;
this._el.value = oldval;
this._nativeSelect(oldselection);
// scroll into position if necessary
if (this._el.scrollTop > top || this._el.scrollTop+this._el.clientHeight < top){
this._el.scrollTop = top;
}
// now scroll the element into view; get its position as in jQuery.offset
var rect = this._el.getBoundingClientRect();
rect.top += this._win.pageYOffset - this._doc.documentElement.clientTop;
rect.left += this._win.pageXOffset - this._doc.documentElement.clientLeft;
// create an element to scroll to
var div = this._doc.createElement('div');
div.style.position = 'absolute';
div.style.top = (rect.top+top-this._el.scrollTop)+'px'; // adjust for how far in the range is; it may not have scrolled all the way to the top
div.style.left = rect.left+'px';
div.innerHTML = '&nbsp;';
this._doc.body.appendChild(div);
div.scrollIntoViewIfNeeded ? div.scrollIntoViewIfNeeded() : div.scrollIntoView();
div.parentNode.removeChild(div);
}
function W3CRange(){}
W3CRange.prototype = new Range();
W3CRange.prototype._nativeRange = function (bounds){
var rng = this._doc.createRange();
rng.selectNodeContents(this._el);
if (bounds){
w3cmoveBoundary (rng, bounds[0], true, this._el);
rng.collapse (true);
w3cmoveBoundary (rng, bounds[1]-bounds[0], false, this._el);
}
return rng;
};
W3CRange.prototype._nativeSelect = function (rng){
this._win.getSelection().removeAllRanges();
this._win.getSelection().addRange (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
var sel = this._win.getSelection().getRangeAt(0);
return [
w3cstart(sel, rng),
w3cend (sel, rng)
];
}
W3CRange.prototype._nativeGetText = function (rng){
return rng.toString();
};
W3CRange.prototype._nativeSetText = function (text, rng){
rng.deleteContents();
rng.insertNode (this._doc.createTextNode(text));
this._el.normalize(); // merge the text with the surrounding text
};
W3CRange.prototype._nativeEOL = function(){
var rng = this._nativeRange(this.bounds());
rng.deleteContents();
var br = this._doc.createElement('br');
br.setAttribute ('_moz_dirty', ''); // for Firefox
rng.insertNode (br);
rng.insertNode (this._doc.createTextNode('\n'));
rng.collapse (false);
};
W3CRange.prototype._nativeScrollIntoView = function(rng){
// can't scroll to a range; have to scroll to an element instead
var span = this._doc.createElement('span');
rng.insertNode(span);
span.scrollIntoViewIfNeeded ? span.scrollIntoViewIfNeeded() : span.scrollIntoView();
span.parentNode.removeChild(span);
}
// W3C internals
function nextnode (node, root){
// in-order traversal
// we've already visited node, so get kids then siblings
if (node.firstChild) return node.firstChild;
if (node.nextSibling) return node.nextSibling;
if (node===root) return null;
while (node.parentNode){
// get uncles
node = node.parentNode;
if (node == root) return null;
if (node.nextSibling) return node.nextSibling;
}
return null;
}
function w3cmoveBoundary (rng, n, bStart, el){
// move the boundary (bStart == true ? start : end) n characters forward, up to the end of element el. Forward only!
// if the start is moved after the end, then an exception is raised
if (n <= 0) return;
var node = rng[bStart ? 'startContainer' : 'endContainer'];
if (node.nodeType == 3){
// we may be starting somewhere into the text
n += rng[bStart ? 'startOffset' : 'endOffset'];
}
while (node){
if (node.nodeType == 3){
if (n <= node.nodeValue.length){
rng[bStart ? 'setStart' : 'setEnd'](node, n);
// special case: if we end next to a <br>, include that node.
if (n == node.nodeValue.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);
}
if (next && next.nodeType == 1 && next.nodeName == "BR") rng[bStart ? 'setStartAfter' : 'setEndAfter'](next);
}
return;
}else{
rng[bStart ? 'setStartAfter' : 'setEndAfter'](node); // skip past this one
n -= node.nodeValue.length; // and eat these characters
}
}
node = nextnode (node, el);
}
}
var START_TO_START = 0; // from the w3c definitions
var START_TO_END = 1;
var END_TO_END = 2;
var END_TO_START = 3;
// from the Mozilla documentation, for range.compareBoundaryPoints(how, sourceRange)
// -1, 0, or 1, indicating whether the corresponding boundary-point of range is respectively before, equal to, or after the corresponding boundary-point of sourceRange.
// * Range.END_TO_END compares the end boundary-point of sourceRange to the end boundary-point of range.
// * Range.END_TO_START compares the end boundary-point of sourceRange to the start boundary-point of range.
// * Range.START_TO_END compares the start boundary-point of sourceRange to the end boundary-point of range.
// * Range.START_TO_START compares the start boundary-point of sourceRange to the start boundary-point of range.
function w3cstart(rng, constraint){
if (rng.compareBoundaryPoints (START_TO_START, constraint) <= 0) return 0; // at or before the beginning
if (rng.compareBoundaryPoints (END_TO_START, constraint) >= 0) return constraint.toString().length;
rng = rng.cloneRange(); // don't change the original
rng.setEnd (constraint.endContainer, constraint.endOffset); // they now end at the same place
return constraint.toString().length - rng.toString().length;
}
function w3cend (rng, constraint){
if (rng.compareBoundaryPoints (END_TO_END, constraint) >= 0) return constraint.toString().length; // at or after the end
if (rng.compareBoundaryPoints (START_TO_END, constraint) <= 0) return 0;
rng = rng.cloneRange(); // don't change the original
rng.setStart (constraint.startContainer, constraint.startOffset); // they now start at the same place
return rng.toString().length;
}
function NothingRange(){}
NothingRange.prototype = new Range();
NothingRange.prototype._nativeRange = function(bounds) {
return bounds || [0,this.length()];
};
NothingRange.prototype._nativeSelect = function (rng){ // do nothing
};
NothingRange.prototype._nativeSelection = function(){
return [0,0];
};
NothingRange.prototype._nativeGetText = function (rng){
return this._el[this._textProp].substring(rng[0], rng[1]);
};
NothingRange.prototype._nativeSetText = function (text, rng){
var val = this._el[this._textProp];
this._el[this._textProp] = val.substring(0, rng[0]) + text + val.substring(rng[1]);
};
NothingRange.prototype._nativeEOL = function(){
this.text('\n');
};
NothingRange.prototype._nativeScrollIntoView = function(){
this._el.scrollIntoView();
};
})();