CODEWITHSUNDEEP
resizejface
Marco Roda
Marco Roda

Reputation: 21

How to resize a WizardDialog depending on the WizardPage?

I am creating a JFace WizardDialog including a single WizardPage that is changing its contents (controls) depending on user selection. In short:

final PageAccess page = new PageAccess(...);

WizCreate wiz = new WizCreate() {
    @Override
    public boolean performFinish() {
        page.performFinish();
        return true;
    }
};
wiz.addPage(page);

Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
WizardDialog dialog = new WizardDialog(shell, wiz);
dialog.open();

PageAccess extends WizardPage, and WizCreate extends Wizard.

All the Composites in the page use GridLayout. The page implements a SelectionListener and redraws its contents. When the page changes its size (expand its width because of new controls), the dialog is not resized so that the page is cut off. So how to resize the dialog depending on the page?

Upvotes: 0

Views: 122

Answers (3)

Andrey P.
Andrey P.

Reputation: 1

As a follow up to Greg comment, the full solution is:

@Override
protected Point getInitialSize() {
    updateSize();
    return super.getInitialSize();
}

Upvotes: 0

Marco Roda
Marco Roda

Reputation: 21

I managed by calculating the preferred size of the main control, and then resizing the dialog shell:

    Point preferredSize = getControl().computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
        
    WizardDialog dialog = (WizardDialog) getContainer();
    dialog.getShell().setSize(preferredSize.x+..., preferredSize.y+...);

Upvotes: 0

greg-449
greg-449

Reputation: 111216

WizardDialog implements IWizardContainer2 which has an updateSize method that you can call to recalculate the size.

In your page you can use

if (getContainer() instanceof IWizardContainer2 container) {
   container.updateSize();
}

(code uses Java 16 instanceof type patterns, for older releases it would be a bit more complicated).

Note that WizardDialog only ever increases the size, it won't reduce the size.

Upvotes: 1

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