package org.argeo.connect.ui.util;
   
   import org.eclipse.swt.widgets.Composite;
   
   /**
    * Use this class rather than Composite as parent for the inner Control of the
    * CTabFolder to provide lazy loading abilities
    */
   public abstract class LazyCTabControl extends Composite {
  	private static final long serialVersionUID = -3381279482510581039L;
  
  	public LazyCTabControl(Composite parent, int style) {
  		super(parent, style);
  	}
  
  	@Override
  	public void setVisible(boolean visible) {
  		// Creates the child controls if needed before showing the tab to avoid
  		// moving content
  		if (visible) {
  			if (this.getChildren().length == 0)
  				createPartControl(this);
  			refreshPartControl();
  		}
  		super.setVisible(visible);
  	}
  
  	public abstract void createPartControl(Composite parent);
  
  	public abstract void refreshPartControl();
  }