+1 Jens -> Remember to use only Layout Panels + have a look
to http://www.gwtproject.org/doc/latest/DevGuideUiPanels.html#Design
On Sunday, July 27, 2014 6:59:56 PM UTC+2, Jens wrote:
>
> Hi,
>
> I want to create a custom widget. It's based on ResizeComposite and it
> will contain some special graphical stuff in a HeaderPanel.
> I will have to rearrange the graphical stuff when the custom widget is
> resized. I'm overriding the onResize()-Method of ResizeComposite for this
> purpose,
> but it seems not to be called when resizing occurs.
>
> This is the (simplified) code of my custom widget:
>
> public class DendrogramWidget extends ResizeComposite {
>
> public static final String CLASSNAME = "dendrogram";
>
> private HeaderPanel mainPanel;
> private Button header = new Button("graph-header");
> private Button footer = new Button("graph-footer");
> private Label label = new Label("later on, here will come the
> graphical stuff");
>
> public DendrogramWidget() {
>
> this.mainPanel = new HeaderPanel();
> this.initWidget(this.mainPanel);
> this.setStyleName(CLASSNAME);
> this.mainPanel.setSize("100%", "100%");
>
> this.mainPanel.add(header);
> this.mainPanel.add(label);
> this.mainPanel.add(footer);
>
> this.mainPanel.setHeaderWidget(header);
> this.mainPanel.setContentWidget(label);
> this.mainPanel.setFooterWidget(footer);
>
> this.header.addClickHandler(new ClickHandler() {
>
> @Override
> public void onClick(ClickEvent event) {
> String name = ((Button)event.getSource()).getText();
> label.setText("clicked on "+name);
> }
>
> });
>
> this.footer.addClickHandler(new ClickHandler() {
>
> @Override
> public void onClick(ClickEvent event) {
> String name = ((Button)event.getSource()).getText();
> label.setText("clicked on "+name);
> }
>
> });
>
> }
>
> @Override
> public void onResize() {
> super.onResize();
> label.setText("onResize() called ["+DendrogramWidget.this.
> getOffsetWidth()+","+DendrogramWidget.this.getOffsetHeight()+"]");
> }
>
> }
>
> As you can see, it's pretty simple (yet). I'm expecting the text of the
> label being changed when resizing the widget, but nothing happens.
> I'm new to GWT so maybe I'm missing something important.
>
> Can anyone give me an advice what's going wrong here?
>
> Thanks in advance,
>
> Jens
>
>
>
>
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