I am working on a Python editor and would like to add a feature to insert text at the position of the caret on a CodeMirror textarea.
There is a series of pictures which can be clicked. When one is clicked, the alt attribute of that picture gets saved, and then when you click again inside the textarea it gets copied to your mouse position (a demo fiddle: https://jsfiddle.net/t0k7yp7n/1/)
Here is a script for the text insertion part:
selected = '';
$('.insert').click(function() {
console.log($(this).attr('alt'));
selected = $(this).attr('alt');
});
$('#textbox').click(function() {
insertAtCaret('textbox', selected)
// Clear the selection so it isn't copied repeatedly
selected = '';
});
function insertAtCaret(areaId, text) {
var txtarea = document.getElementById(areaId);
var scrollPos = txtarea.scrollTop;
var strPos = 0;
var br = ((txtarea.selectionStart || txtarea.selectionStart == '0') ?
"ff" : (document.selection ? "ie" : false));
if (br == "ie") {
txtarea.focus();
var range = document.selection.createRange();
range.moveStart('character', -txtarea.value.length);
strPos = range.text.length;
} else if (br == "ff") strPos = txtarea.selectionStart;
var front = (txtarea.value).substring(0, strPos);
var back = (txtarea.value).substring(strPos, txtarea.value.length);
txtarea.value = front + text + back;
strPos = strPos + text.length;
if (br == "ie") {
txtarea.focus();
var range = document.selection.createRange();
range.moveStart('character', -txtarea.value.length);
range.moveStart('character', strPos);
range.moveEnd('character', 0);
range.select();
} else if (br == "ff") {
txtarea.selectionStart = strPos;
txtarea.selectionEnd = strPos;
txtarea.focus();
}
txtarea.scrollTop = scrollPos;
}
And here is the CodeMirror textarea part:
var editor;
//<![CDATA[
window.onload = function() {
editor = CodeMirror.fromTextArea(document.getElementById('textbox'), {
mode: {
name: "python",
version: 2,
singleLineStringErrors: false
},
lineNumbers: true,
indentUnit: 4
});
} //]]><!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js" type="text/javascript"></script>
<script src="http://www.skulpt.org/static/skulpt.min.js" type="text/javascript"></script>
<script src="http://www.skulpt.org/static/skulpt-stdlib.js" type="text/javascript"></script>
<script src="https://www.cs.princeton.edu/~dp6/CodeMirror/lib/codemirror.js" type="text/javascript"></script>
<script src="https://www.cs.princeton.edu/~dp6/CodeMirror/mode/python/python.js" type="text/javascript"></script>
<script src="skulpt-codemirror.js" type="text/javascript"></script>
<script src="load-save-py.js" type="text/javascript"></script>
<script src="insert.js" type="text/javascript"></script>
<link href="https://www.cs.princeton.edu/~dp6/CodeMirror/lib/codemirror.css" rel="stylesheet" type="text/css">
<title>Python Editor</title>
</head>
<body>
Filename:
<input id="inputFileNameToSaveAs">
<button onclick="saveTextAsFile()">Save</button>
<br>
<input type="file" id="fileToLoad">
<button onclick="loadFileAsText()">Open</button>
<br>
<br>
<a href="#!">
<img class="insert" alt="#1">
<img class="insert" alt="#2">
<img class="insert" alt="#3">
</a>
<br>
<br>
<textarea id="textbox" name="textbox"></textarea>
<br>
<button onclick="runit()" type="button">Run</button>
<pre id="dynamicframe"></pre>
<div id="canvas"></div>
</body>
</html>When I put them together in one file, though, when I click the pictures their alts do not copy over to the textarea. Why is this and how do I fix it?