我想在用户在TextBox
中粘贴一些文本时处理事件。在这种情况下会发生哪些事件?我尝试了ValueChange
和Change
处理程序,但它们没有用。
This可能会帮助你。描述了挂钩onpaste事件的解决方法。简而言之:
TextBox
sinkEvents(Event.ONPASTE);
onBrowserEvent(Event event)
public void onBrowserEvent(Event event) {
super.onBrowserEvent(event);
switch (event.getTypeInt()) {
case Event.ONPASTE: {
// do something here
break;
}
}
}
GWT还不支持剪切,复制和粘贴:http://code.google.com/p/google-web-toolkit/issues/detail?id=4030
编辑:另一种选择是使用JSNI。例如,将此添加到您的GWT类:
public native void addCutHandler(Element element)
/*-{
var temp = this; // hack to hold on to 'this' reference
element.oncut = function(e) {
[email protected]::handleCut()();
}
}-*/;
public void handleCut() {
Window.alert("Cut!");
}
**(Write In the Constructor)**
sinkEvents( Event.ONPASTE );
**(After that write below code)**
public void onBrowserEvent( Event event )
{
super.onBrowserEvent( event );
switch ( event.getTypeInt() )
{
case Event.ONPASTE :
{
event.stopPropagation();
event.preventDefault();
break;
}
}
}