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MDL-28406 blocks: added JS to prevent the addition of duplicate blocks

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Andrew Davis (andyjdavis) 2011-08-04 12:01:52 +08:00
parent ca3e8e98a4
commit 8d0845d30a
1 changed files with 14 additions and 6 deletions
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20
lib/javascript-static.js
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@ -361,21 +361,29 @@ M.util.init_select_autosubmit = function(Y, formid, selectid, nothing) {
// Make sure we have the form
if (form) {
// Create a function to handle our change event
var processchange = function(e, lastindex) {
if ((nothing===false || select.get('value') != nothing) && lastindex != select.get('selectedIndex')) {
var processchange = function(e, paramobject) {
if ((nothing===false || select.get('value') != nothing) && paramobject.lastindex != select.get('selectedIndex')) {
//prevent event bubbling and detach handlers to prevent multiple submissions caused by double clicking
e.halt();
paramobject.eventkeypress.detach();
paramobject.eventblur.detach();
paramobject.eventchangeorblur.detach();
this.submit();
}
};
// Attach the change event to the keypress, blur, and click actions.
// We don't use the change event because IE fires it on every arrow up/down
// event.... usability
Y.on('key', processchange, select, 'press:13', form, select.get('selectedIndex'));
select.on('blur', processchange, form, select.get('selectedIndex'));
var paramobject = new Object();
paramobject.lastindex = select.get('selectedIndex');
paramobject.eventkeypress = Y.on('key', processchange, select, 'press:13', form, paramobject);
paramobject.eventblur = select.on('blur', processchange, form, paramobject);
//little hack for chrome that need onChange event instead of onClick - see MDL-23224
if (Y.UA.webkit) {
select.on('change', processchange, form, select.get('selectedIndex'));
paramobject.eventchangeorblur = select.on('change', processchange, form, paramobject);
} else {
select.on('click', processchange, form, select.get('selectedIndex'));
paramobject.eventchangeorblur = select.on('click', processchange, form, paramobject);
}
}
}