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Added document max length limit, enforceMaxLength on change and show modal when reach the limit.

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This commit is contained in:
Wu Cheng-Han 2015-07-16 22:46:06 +08:00
parent 57253d28a7
commit d14c5bdc9c
6 changed files with 59 additions and 9 deletions
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23
public/js/index.js
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@ -909,10 +909,13 @@ socket.on('permission', function (data) {
permission = data.permission;
checkPermission();
});
var docmaxlength = null;
var otk = null;
var owner = null;
var permission = null;
socket.on('refresh', function (data) {
docmaxlength = data.docmaxlength;
editor.setOption("maxLength", docmaxlength);
otk = data.otk;
owner = data.owner;
permission = data.permission;
@ -1435,10 +1438,30 @@ function buildCursor(user) {
}
//editor actions
function enforceMaxLength(cm, change) {
var maxLength = cm.getOption("maxLength");
if (maxLength && change.update) {
var str = change.text.join("\n");
var delta = str.length - (cm.indexFromPos(change.to) - cm.indexFromPos(change.from));
if (delta <= 0) {
return false;
}
delta = cm.getValue().length + delta - maxLength;
if (delta > 0) {
str = str.substr(0, str.length - delta);
change.update(change.from, change.to, str.split("\n"));
return true;
}
}
return false;
}
var ignoreEmitEvents = ['setValue', 'ignoreHistory'];
editor.on('beforeChange', function (cm, change) {
if (debug)
console.debug(change);
if (enforceMaxLength(cm, change)) {
$('.limit-modal').modal('show');
}
var isIgnoreEmitEvent = (ignoreEmitEvents.indexOf(change.origin) != -1);
if (!isIgnoreEmitEvent) {
switch (permission) {