<telerik:RadEditor ID="RadEditor1" runat="server" NewLineMode="BR" OnClientLoad="LimitCharacters" OnClientPasteHtml="OnClientPasteHtml" OnClientCommandExecuting="commandExecuting">
<Content></Content>
</telerik:RadEditor>
<telerik:RadEditor ID="RadEditor2" runat="server" NewLineMode="BR" OnClientLoad="LimitCharacters" OnClientPasteHtml="OnClientPasteHtml" OnClientCommandExecuting="commandExecuting">
<Content></Content>
</telerik:RadEditor>
<div id="counter"></div>
<script type="text/javascript">
var editorList = new Object();
var editorLengthArray = [20, 30];
var counter = 0;
var cancelEnter = false;
function isAlphaNumericKey(keyCode) {
if ((keyCode > 47 && keyCode < 58) || (keyCode > 64 && keyCode < 91)) {
return true;
}
return false;
}
function commandExecuting(editor, args) {
if (args.get_commandName() == "EnterNewLine" && cancelEnter)
args.set_cancel(true);
}
function LimitCharacters(editor) {
editorList[editor.get_id()] = editorLengthArray[counter];
counter++;
editor.attachEventHandler("onkeydown", function (e) {
//console.log(e.keyCode);
e = (e == null) ? window.event : e;
var maxTextLength = editorList[editor.get_id()];
var textLength = editor.get_text().length;
if (isAlphaNumericKey(e.keyCode) || e.keyCode == 13) {
if (textLength >= maxTextLength) {
//alert('You are not able to type more than ' + maxTextLength + ' symbols!');
$telerik.cancelRawEvent(e);
cancelEnter = true;
}
}
});
var element = document.all ? editor.get_document().body : editor.get_document();
$telerik.addExternalHandler(element, "paste", function (e) {
e = (e == null) ? window.event : e;
var maxTextLength = editorList[editor.get_id()];
textLength = editor.get_text().length;
var clipboardLength = window.clipboardData.getData("Text").length;
textLength += clipboardLength;
if (textLength >= maxTextLength) {
alert('You are not able to type more than ' + maxTextLength + ' symbols!');
e.returnValue = false;
return false;
}
});
}
function CalculateLength(editor, value) {
var textLength = editor.get_text().length;
var clipboardLength = value.length;
textLength += clipboardLength;
return textLength;
}
function OnClientPasteHtml(editor, args) {
var maxTextLength = editorList[editor.get_id()];
var commandName = args.get_commandName();
var value = args.get_value();
if (commandName == "PasteFromWord"
|| commandName == "PasteFromWordNoFontsNoSizes"
|| commandName == "PastePlainText"
|| commandName == "PasteAsHtml"
|| commandName == "Paste") {
var textLength = CalculateLength(editor, value);
if (textLength >= maxTextLength) {
alert('You are not able to type more than ' + maxTextLength + ' symbols!');
args.set_cancel(true);
}
}
}
</script>