Bug 38009 [Wizards] Wizard banner text should wrap
Currently if wizard banner text is too long for the line, it's truncated. Hovering over it produces a pop-up with the complete text (unless I suppose it's too long to fit on the screen). In any case this looks really bad. If the text is too long for one line, it should be wrapped to multiple lines. A good UI designer isn't going to write wizard banner text that's enormously long, but the wizard framework should be able to handle it.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/TitleAreaDialog.java
* Sets the title image to be shown in the title area of this dialog.
 *
 * @param newTitle the title image show 
 */
public void setTitleImage(Image newTitleImage) {
	titleImage.setImage(newTitleImage);
	titleImage.setVisible(newTitleImage != null);
	if(newTitleImage != null){
		determineTitleImageLargest();
		Control top;
		if(titleImageLargest)
			top = titleImage;
		else
			top = messageLabel;
		resetWorkAreaAttachments(top);
	}
}
/**
 * Make the label used for displaying error images visible
 * depending on boolean.
 */
private void setImageLabelVisible(boolean visible){
	messageImageLabel.setVisible(visible);
	bottomFillerLabel.setVisible(visible);
	leftFillerLabel.setVisible(visible);
	
}
/**
 * Set the message backgrounds to be the error or normal color
 * depending on whether or not showingError is true.