I have had this problem before.
The widget needs to be visible before it knows the size atributes.
Here is some code that might help you. you need to schedule a
deferred commad. Do some searched to understand object.
Hope this helps!
public static void adjustHeight(final DockLayoutPanel topPanel,
final SimplePanel bodyPanel, final DockLayoutPanel outerPanel, final
boolean isIpad)
{
Scheduler.get().scheduleDeferred(new
Scheduler.ScheduledCommand()
{
public void execute()
{
int width = Window.getClientWidth() - 7;
int height = Window.getClientHeight() - 7;
if(isIpad)
{
width = width - 40;
}
On Mar 28, 5:46 am, tong123123 <[email protected]> wrote:
> the code is attached as follow:
>
> public class ALS implements EntryPoint {
>
>
>
>
>
> > ScrollPanel basePanel = new ScrollPanel();
> > DockLayoutPanel baseDockLayoutPanel = new DockLayoutPanel(Unit.PX);
> > SimplePanel simpleContentPanel = new SimplePanel();
>
> > public void onModuleLoad() {
> > RootLayoutPanel rootPanel = RootLayoutPanel.get();
> > rootPanel.add(basePanel);
> > basePanel.add(baseDockLayoutPanel);
> > baseDockLayoutPanel.setSize("1200", "800");
> > baseDockLayoutPanel.addNorth(CommonPanel.getHeaderPanel(), 20);
> > baseDockLayoutPanel.addSouth(CommonPanel.getFooterPanel(), 40);
> > FlowPanel leftSidePanel = CommonPanel.getLeftSidePanel();
> > FlowPanel menuPanel = new FlowPanel();
> > menuPanel.setWidth("150px");
> > menuPanel.addStyleName("menu");
> > menuPanel.add(buildTree());
> > leftSidePanel.add(menuPanel);
> > baseDockLayoutPanel.addWest(leftSidePanel, 220);
> > baseDockLayoutPanel.add(simpleContentPanel);
> > baseDockLayoutPanel.setSize("1024", "800");
>
> > }
>
> > Tree buildTree(){
> > Tree treeMenu = new Tree();
>
> > final TreeItem searchLogs = new TreeItem("Search Logs");
> > treeMenu.addItem(searchLogs);
> > searchLogs.setState(true);
>
> > treeMenu.addSelectionHandler(new SelectionHandler<TreeItem>(){
>
> > @Override
> > public void onSelection(SelectionEvent<TreeItem> event) {
> > if
> > (event.getSelectedItem().equals(advancedSearchLogs)){
> >
> > //System.out.println(splitLayoutPanel.getWidgetCount());
> >
> > simpleContentPanel.remove(simpleContentPanel.getWidget());
> > simpleContentPanel.add(new
> > AdvancedSearchLogsPanel());
> > advancedSearchLogsPanel.forceLayout();
> > baseDockLayoutPanel.forceLayout();
>
> > int width =
> > advancedSearchLogsPanel.getOffsetWidth() + 220;
> > int height =
> > advancedSearchLogsPanel.getOffsetHeight()+ 60;
> > // Problem here, getOffSetheight()
> > return zero!!
> > // AdvancedSearchLogsPanel is a
> > docklayoutPanel
> >
> > baseDockLayoutPanel.setSize(String.valueOf(width), String.valueOf(height));
> > }
> > }});
> > return treeMenu;
> > }
> > }
>
> On Wednesday, March 28, 2012 4:08:00 PM UTC+8, tong123123 wrote:
>
> > there is a simplePanel and the simplePanel add a DockLayoutPanel called
> > AdvancedSearchPanel.
> > in the AdvancedSearchPanel constructor, the width is set to 100% and
> > height to 1800px.
>
> > then there is a menu item and when it is clicked,
> > I try to add the AdvancedSearchLogsPanel() to simplePanel and then called
> > advancedSearchLogsPanel.forceLayout()
> > before calling
> > advancedSearchLogsPanel.getOffsetWidth() and
> > advancedSearchLogsPanel.getOffsetHeight()
> > but both return zero!!
>
> > what is the problem come from?
>
> On Wednesday, March 28, 2012 4:08:00 PM UTC+8, tong123123 wrote:
>
> > there is a simplePanel and the simplePanel add a DockLayoutPanel called
> > AdvancedSearchPanel.
> > in the AdvancedSearchPanel constructor, the width is set to 100% and
> > height to 1800px.
>
> > then there is a menu item and when it is clicked,
> > I try to add the AdvancedSearchLogsPanel() to simplePanel and then called
> > advancedSearchLogsPanel.forceLayout()
> > before calling
> > advancedSearchLogsPanel.getOffsetWidth() and
> > advancedSearchLogsPanel.getOffsetHeight()
> > but both return zero!!
>
> > what is the problem come from?- Hide quoted text -
>
> - Show quoted text -
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