Bug 15604 Promote Fill arguments on method completion to a real preference
It is still in work in progress but it has become an established feature by now. Promote the preference to the code assist preference page.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavaEditorPreferencePage.java
labelControl.setLayoutData(gd);
		
		Text textControl= new Text(composite, SWT.BORDER | SWT.SINGLE);		
		gd= new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
		gd.widthHint= convertWidthInCharsToPixels(textLimit + 1);
		textControl.setLayoutData(gd);
		textControl.setTextLimit(textLimit);
		fTextFields.put(textControl, key);
		if (isNumber) {
			fNumberFields.add(textControl);
			textControl.addModifyListener(fNumberFieldListener);
		} else {
			textControl.addModifyListener(fTextFieldListener);
		}
			
		return composite;
	}
	
	private void addTextFontEditor(Composite parent, String label, String key) {
		
		Composite editorComposite= new Composite(parent, SWT.NONE);
		GridLayout layout= new GridLayout();
		layout.numColumns= 3;
		editorComposite.setLayout(layout);		
		fFontEditor= new WorkbenchChainedTextFontFieldEditor(key, label, editorComposite);
		fFontEditor.setChangeButtonText(JavaUIMessages.getString("JavaEditorPreferencePage.change")); 
				
		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan= 2;
		editorComposite.setLayoutData(gd);