Bug 42143 Dialogs for source actions do not use dialog font [dialogs]
select a cu in package explorer context menu "Source": "Override/Implement methods..." "Generate Getters and Setters..." "Generate Delegate methods..." "Add constructor from superclass..." "Generate constructor using fields..."
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/dialogs/SourceActionDialog.java
layout.verticalSpacing=	convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
		layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);			
		composite.setLayout(layout);
		composite.setFont(parent.getFont());	
						
		Label messageLabel = createMessageArea(composite);			
		if (messageLabel != null) {
			gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
			gd.horizontalSpan= 2;
			messageLabel.setLayoutData(gd);	
		}
			
		Composite inner= new Composite(composite, SWT.NONE);
		GridLayout innerLayout = new GridLayout();
		innerLayout.numColumns= 2;
		innerLayout.marginHeight= 0;
		innerLayout.marginWidth= 0;
		inner.setLayout(innerLayout);
		inner.setFont(parent.getFont());		
			
		CheckboxTreeViewer treeViewer= createTreeViewer(inner);
		gd= new GridData(GridData.FILL_BOTH);
		gd.widthHint = convertWidthInCharsToPixels(fWidth);
		gd.heightHint = convertHeightInCharsToPixels(fHeight);
		treeViewer.getControl().setLayoutData(gd);			
					
		Composite buttonComposite= createSelectionButtons(inner);
		gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL);
		buttonComposite.setLayoutData(gd);