I notice that you are removing the widget from it's parent. That doesn't
seem correct.
On Fri, Aug 12, 2011 at 12:55 PM, yourenzhuce <yourenzh...@gmail.com> wrote:
> I want to add a div on TextBox, when textbox's value is empty, the div
> will be show.
> It look good, but it can't receive the event. the EventHandler does
> not take effect.
>
> What's the problem??
>
> The code is:
> ----------------------------------------------------------------
> public static HTML insertLabelUpon(final ValueBoxBase widget) {
> final HTML label = new HTML();
> label.setStyleName("PlugInLabel");
>
> Element parent = widget.getElement().getParentElement();
> if (parent == null) return null;
> Element div = DOM.createDiv();
> widget.removeFromParent();
> parent.appendChild(div);
> div.appendChild(widget.getElement());
> div.appendChild(label.getElement());
>
> div.getStyle().setProperty("position", "relative");
> DOM.setStyleAttribute(label.getElement(), "position",
> "absolute");
>
> label.addClickHandler(new ClickHandler() {
> @Override
> public void onClick(ClickEvent event) {
> widget.setFocus(true);
> }
> });
> widget.addFocusHandler(new FocusHandler() {
> @Override
> public void onFocus(FocusEvent event) {
> label.setVisible(false);
> }
> });
> widget.addBlurHandler(new BlurHandler() {
> @Override
> public void onBlur(BlurEvent event) {
> Object value = widget.getValue();
> if(value != null && value != "") {
> label.setVisible(false);
> } else {
> label.setVisible(true);
> }
> }
> });
>
> return label;
> }
> ----------------------------------------------------------------
>
> the CSS:
> ----------------------------------------------------------------
> .PlugInLabel {
> position: absolute;
> font: 11px tahoma,arial,verdana,sans-serif !important;
> left: 5px !important;
> color: #999999;
> }
> ----------------------------------------------------------------
>
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