@Override
public HandlerRegistration addClickHandler(ClickHandler clickHandler) {
/*
* When we directly subscribe to this widget's ClickEvent, sometimes the
* click gets ignored (inconsistent repro but it happens enough to be
* annoying). Doing it this way fixes it.
*/
hasHandlers_.addHandler(ClickEvent.getType(), clickHandler);
final HandlerRegistration mouseDown =
addMouseDownHandler(
new MouseDownHandler() {
public void onMouseDown(MouseDownEvent event) {
event.preventDefault();
event.stopPropagation();
addStyleName(styles_.toolbarButtonPushed());
down_ = true;
}
});
final HandlerRegistration mouseOut =
addMouseOutHandler(
new MouseOutHandler() {
public void onMouseOut(MouseOutEvent event) {
event.preventDefault();
event.stopPropagation();
removeStyleName(styles_.toolbarButtonPushed());
down_ = false;
}
});
final HandlerRegistration mouseUp =
addMouseUpHandler(
new MouseUpHandler() {
public void onMouseUp(MouseUpEvent event) {
event.preventDefault();
event.stopPropagation();
if (down_) {
down_ = false;
removeStyleName(styles_.toolbarButtonPushed());
NativeEvent clickEvent =
Document.get()
.createClickEvent(
1,
event.getScreenX(),
event.getScreenY(),
event.getClientX(),
event.getClientY(),
event.getNativeEvent().getCtrlKey(),
event.getNativeEvent().getAltKey(),
event.getNativeEvent().getShiftKey(),
event.getNativeEvent().getMetaKey());
DomEvent.fireNativeEvent(clickEvent, hasHandlers_);
}
}
});
return new HandlerRegistration() {
public void removeHandler() {
mouseDown.removeHandler();
mouseOut.removeHandler();
mouseUp.removeHandler();
}
};
}
public HandlerRegistration addClickHandler(ClickHandler handler) {
return addDomHandler(handler, ClickEvent.getType());
}