Bug 63390 JavaDoc view should use a style sheet
The JavaDoc view is now using the HTML widget. To improve the rendering of the javadoc it should make sure that the corresping style sheet is available.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/infoviews/JavadocView.java
protected void setBackground(Color color) {
		getControl().setBackground(color);
	}
	/*
	 * @see AbstractInfoView#internalDispose()
	 */
	protected void internalDispose() {
		fText= null;
		fBrowser= null;
	}
	/*
	 * @see org.eclipse.ui.part.WorkbenchPart#setFocus()
	 */
	public void setFocus() {
		getControl().setFocus();
	}
	/*
	 * @see AbstractInfoView#computeInput(Object)
	 */
	protected Object computeInput(Object input) {
		if (getControl() == null || ! (input instanceof IJavaElement))
			return null;
		IJavaElement je= (IJavaElement)input;
		String javadocHtml= null;
		if (je.getElementType() == IJavaElement.COMPILATION_UNIT) {
			try {
				javadocHtml= getJavadocHtml(((ICompilationUnit)je).getTypes());
			} catch (JavaModelException ex) {
				return null;
			}