GWT pasting event

Question

Hi, I want to handle events when user pastes some text in TextBox. Which event is fired in this situation? I tried ValueChange and Change handlers, but they didn't work.

Answer 1

GWT does not yet have support for cut, copy & paste: http://code.google.com/p/google-web-toolkit/issues/detail?id=4030

Edited: Another option is to use JSNI. For example add this to your GWT class:

public native void addCutHandler(Element elementID)
    /*-{
        var temp = this;  // hack to hold on to 'this' reference
        elementID.oncut = function(e) {
            [email protected]::handleCut()();
        }
    }-*/;

public void handleCut() {
    Window.alert("Cut!");
}

Answer 2

This might help you. Describes a workaround to hook to the onpaste event. In short:

• subclass TextBox

• sink the onpaste event in the constructor

  sinkEvents(Event.ONPASTE);

• override onBrowserEvent(Event event)

  public void onBrowserEvent(Event event) {
      super.onBrowserEvent(event);
      switch (event.getTypeInt()) {
          case Event.ONPASTE: {
              // do something here
              break;
          }
      }
  }