Bug 93549 [Import/Export] Disable Finish in import existing projects wizard
Build: N20050503 Open import existing project wizard Toggle radio button to import from archive Type in the name of an archive file Toggle radio button back to import from directory Observe: the Finish button is still enabled, even though there is no directory selected. Clicking Finish will import from the selected zip file.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
* 
			 * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
			 */
			public void widgetSelected(SelectionEvent e) {
				if (projectFromDirectoryRadio.getSelection())
					updateProjectsList(directoryPathField.getText().trim());
				else
					updateProjectsList(archivePathField.getText().trim());
			}
		});
		setButtonLayoutData(refresh);
	}
	/**
	 * Create the area where you select the root directory for the projects.
	 * 
	 * @param workArea
	 *            Composite
	 */
	private void createProjectsRoot(Composite workArea) {
		
		Composite projectGroup = new Composite(workArea, SWT.NONE);
		GridLayout layout = new GridLayout();
		layout.numColumns = 3;
		layout.makeColumnsEqualWidth = false;
		layout.marginWidth = 0;
		projectGroup.setLayout(layout);
		projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		
		projectFromDirectoryRadio = new Button(projectGroup, SWT.RADIO);
		projectFromDirectoryRadio