content: package tim.prune.function.compress;
  
  import javax.swing.JOptionPane;
  
  import tim.prune.App;
  import tim.prune.FunctionLibrary;
  import tim.prune.GenericFunction;
  import tim.prune.I18nManager;
  
  /**
   * Superclass of those functions which mark points for deletion
   * (and optionally delete them automatically)
   */
  public abstract class MarkAndDeleteFunction extends GenericFunction
  {
  	/** flag to remember whether the automatic deletion has been set to always */
  	private boolean _automaticallyDelete = false;
  
  
  	/**
  	 * Constructor
  	 * @param inApp App object
  	 */
  	public MarkAndDeleteFunction(App inApp)
  	{
  		super(inApp);
  	}
  
  	/**
  	 * optionally delete the marked points
  	 */
  	protected void optionallyDeleteMarkedPoints(int inNumMarked)
  	{
  		// Allow calling of delete function with one click
  		final String[] buttonTexts = {I18nManager.getText("button.yes"), I18nManager.getText("button.no"),
  			I18nManager.getText("button.always")};
  		int answer = _automaticallyDelete ? JOptionPane.YES_OPTION :
  			JOptionPane.showOptionDialog(_parentFrame,
  			I18nManager.getTextWithNumber("dialog.compress.confirm", inNumMarked),
  			getName(), JOptionPane.YES_NO_CANCEL_OPTION,
  			JOptionPane.WARNING_MESSAGE, null, buttonTexts, buttonTexts[1]);
  		if (answer == JOptionPane.CANCEL_OPTION) {
  			// "always" is third option
  			_automaticallyDelete = true;
  		}
  
  		// Make sure function knows what to do, whether we'll call it now or later
  		FunctionLibrary.FUNCTION_DELETE_MARKED_POINTS.setParentFunction(
  			getNameKey(), getShouldSplitSegments());
  		if (_automaticallyDelete || answer == JOptionPane.YES_OPTION) {
  			new Thread(() -> FunctionLibrary.FUNCTION_DELETE_MARKED_POINTS.begin()).start();
  		}
  	}
  
  	/** by default, segments are not split at deleted points */
  	protected boolean getShouldSplitSegments() {
  		return false;
  	}
  }
  