Question

I want to disable the anchor link event when it clicked one time. I used anchor.setenabled(false) but nothing happend. When I click the same button again the event e is true. I want false at that time.

public void onCellClick(GridPanel grid, int rowIndex, int colindex,EventObject e) 
    {
                    if(rowIndex==0 && colindex==2){
                        tomcatHandler = "Start";
                        anchorStart.setEnabled(false);
                    }else if(rowIndex==0 && colindex==3){
                        tomcatHandler = "Stop";
                        ****anchorStop.setEnabled(false);
                        anchorStart.setEnabled(false);
                        anchorRestart.setEnabled(true);****

                }else if(rowIndex==0 &&colindex==4){
                    tomcatHandler = "Restart";
                    anchorRestart.setEnabled(false);
                }

                    AdminService.Util.getInstance().tomcat(tomcatHandler,new AsyncCallback<String>() {
                        @Override
                        public void onSuccess(String result) {
                            imageChangeEvent(result);
                        }
                        @Override
                        public void onFailure(Throwable caught) {
                        }
                    });}

Answer 1

Anchors in GWT have always had a problem with setEnabled() because HTML doesn’t support such a property. A quick workaround is to create a new widget that subclasses GWT’s Anchor, adding the following override:

@Override
public void onBrowserEvent(Event event) {
    switch (DOM.eventGetType(event)) {
        case Event.ONDBLCLICK:
        case Event.ONFOCUS:
        case Event.ONCLICK:
            if (!isEnabled()) {
                return;
            }
            break;
    }
    super.onBrowserEvent(event);
}

This disables the passing of the browser event to GWT’s Anchor class (summarily disabling all related handlers) when the link is double clicked, focused or clicked and is in a disabled state.

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