AbstractSideMarker.java

package org.bundlemaker.core.ui.editor.dsm.widget.internal.sidemarker;

import org.bundlemaker.core.ui.editor.dsm.widget.IDsmColorScheme;
import org.bundlemaker.core.ui.editor.dsm.widget.IDsmContentProvider;
import org.bundlemaker.core.ui.editor.dsm.widget.internal.util.BoxSize;
import org.eclipse.core.runtime.Assert;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.FigureUtilities;
import org.eclipse.draw2d.MouseEvent;
import org.eclipse.draw2d.MouseListener;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.FontMetrics;

/**
 * <p>
 * Abstract base class for all side marker implementations.
 * </p>
 * 
 * @author Gerd Wütherich (gerd@gerd-wuetherich.de)
 */
/**
 * <p>
 * </p>
 * 
 * @author Gerd Wütherich (gerd@gerd-wuetherich.de)
 * 
 */
public abstract class AbstractSideMarker extends Figure {

  /** - */
  private IDsmContentProvider _contentProvider;

  /** - */
  private ILabelProvider      _labelProvider;

  /** - */
  private IDsmColorScheme     _colorScheme;

  /** the marked item */
  private int                 _markedItem = -1;

  /** - */
  private FontMetrics         _fontMetrics;

  /** - */
  private BoxSize             _boxSize;

  /**
   * <p>
   * Creates a new instance of type {@link AbstractSideMarker}.
   * </p>
   * 
   * @param contentProvider
   * @param cycleDetector
   * @param labelProvider
   * @param colorScheme
   */
  public AbstractSideMarker(IDsmContentProvider contentProvider, ILabelProvider labelProvider,
      IDsmColorScheme colorScheme) {

    //
    Assert.isNotNull(contentProvider);
    Assert.isNotNull(labelProvider);
    Assert.isNotNull(colorScheme);

    //
    _contentProvider = contentProvider;
    _labelProvider = labelProvider;
    _colorScheme = colorScheme;

    //
    _boxSize = new BoxSize();

    //
    addMouseListener(new MouseListener.Stub() {

      @Override
      public void mouseReleased(MouseEvent me) {

        if ((me.getState() & SWT.ALT) != 0) {
          System.out.println("ALT");
        }

        if ((me.getState() & SWT.SHIFT) != 0) {
          System.out.println("SHIFT");
        }

        if ((me.getState() & SWT.CONTROL) != 0) {
          System.out.println("CONTROL");
        }

        onMouseReleased(me);
      }
    });
  }

  public ILabelProvider getLabelProvider() {
    return _labelProvider;
  }

  /**
   * <p>
   * </p>
   * 
   * @return
   */
  public BoxSize getBoxSize() {
    return _boxSize;
  }

  /**
   * <p>
   * </p>
   * 
   * @param boxSize
   */
  public void setBoxSize(BoxSize boxSize) {

    Assert.isNotNull(boxSize);

    _boxSize = boxSize;
  }

  protected abstract void onMouseReleased(MouseEvent me);

  /**
   * {@inheritDoc}
   */
  public final void mark(int i) {

    int oldValue = _markedItem;
    _markedItem = i;

    onMark(oldValue, _markedItem);
  }

  /**
   * <p>
   * </p>
   * 
   * @return
   */
  public IDsmContentProvider getContentProvider() {
    return _contentProvider;
  }

  /**
   * <p>
   * </p>
   * 
   * @param oldValue
   * @param x
   */
  protected abstract void onMark(int oldValue, int x);

  /**
   * <p>
   * </p>
   * 
   */
  protected abstract void resetSize();

  /**
   * <p>
   * </p>
   * 
   * @return
   */
  protected IDsmColorScheme getColorScheme() {
    return _colorScheme;
  }

  /**
   * <p>
   * </p>
   * 
   * @param count
   * @return
   */
  protected final int getHorizontalSliceSize(int count) {
    return (getBoxSize().getHorizontalBoxSize() * count);
  }

  /**
   * <p>
   * </p>
   * 
   * @param count
   * @return
   */
  protected final int getVerticalSliceSize(int count) {
    return (getBoxSize().getVerticalBoxSize() * count);
  }

  /**
   * <p>
   * </p>
   * 
   * @return
   */
  public final int getMarkedItem() {
    return _markedItem;
  }

  /**
   * <p>
   * </p>
   * 
   * @return
   */
  public int getFontHeight() {
    if (_fontMetrics == null) {
      _fontMetrics = FigureUtilities.getFontMetrics(getFont());
    }
    return _fontMetrics.getHeight();
  }

  public void setModel(IDsmContentProvider contentProvider) {
    _contentProvider = contentProvider;
  }
}