content: /*
   * Copyright (c) 1997 - 2016
   * Actelion Pharmaceuticals Ltd.
   * Gewerbestrasse 16
   * CH-4123 Allschwil, Switzerland
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   * 3. Neither the name of the the copyright holder nor the
   *    names of its contributors may be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * @author Thomas Sander
   */
  
  package com.actelion.research.gui;
  
  import com.actelion.research.chem.StereoMolecule;
  import com.actelion.research.gui.editor.GenericEditorArea;
  import com.actelion.research.gui.editor.SwingEditorDialog;
  import com.actelion.research.gui.hidpi.HiDPIHelper;
  
  import java.awt.*;
  import java.awt.event.MouseEvent;
  import java.awt.geom.Rectangle2D;
  
  public class JEditableStructureView extends JStructureView {
      static final long serialVersionUID = 0x20090727;
  
      private static final String EDIT_MESSAGE = "<double click or drag & drop>";
      private boolean mAllowQueryFeatures;
      private int mAllowedPseudoAtoms;
  
      public JEditableStructureView() {
          this(null);
  		}
  
  	public JEditableStructureView(StereoMolecule mol) {
          super(mol);
  		setEditable(true);
  		mAllowedPseudoAtoms = GenericEditorArea.DEFAULT_ALLOWED_PSEUDO_ATOMS;
  		mAllowQueryFeatures = true;
  	    }
  
  	public JEditableStructureView(int dragAction, int dropAction) {
          this(null, dragAction, dropAction);
  	    }
  
  	public JEditableStructureView(StereoMolecule mol, int dragAction, int dropAction) {
          super(mol, dragAction, dropAction);
  		setEditable(true);
  		mAllowedPseudoAtoms = GenericEditorArea.DEFAULT_ALLOWED_PSEUDO_ATOMS;
  		mAllowQueryFeatures = true;
  	    }
  
  	@Override
  	public void paintComponent(Graphics g) {
          Dimension theSize = getSize();
          Insets insets = getInsets();
          theSize.width -= insets.left + insets.right;
          theSize.height -= insets.top + insets.bottom;
  
  		super.paintComponent(g);
  
  		if (isEnabled() && isEditable() && getMolecule().getAllAtoms() == 0) {
  	        g.setFont(g.getFont().deriveFont(Font.PLAIN, HiDPIHelper.scale(10)));
  	        FontMetrics metrics = g.getFontMetrics();
  	        Rectangle2D bounds = metrics.getStringBounds(EDIT_MESSAGE, g);
  	        g.drawString(EDIT_MESSAGE, (int)(insets.left+theSize.width-bounds.getWidth())/2,
  	                                   (insets.top+theSize.height-metrics.getHeight())/2+metrics.getAscent());
  	        }
  	    }
  
      public void mouseClicked(MouseEvent e) {
          if (e.getClickCount() == 2 && isEnabled() && isEditable()) {
              SwingEditorDialog theDialog = createDrawDialog();
              theDialog.getDrawArea().setAllowedPseudoAtoms(mAllowedPseudoAtoms);
  	        theDialog.getDrawArea().setAllowQueryFeatures(mAllowQueryFeatures);
              theDialog.getDrawArea().setDisplayMode(getDisplayMode());
              theDialog.addStructureListener(this);
              theDialog.setVisible(true);
              }
          }
  
      protected SwingEditorDialog createDrawDialog() {
  		Component c = this;
  		while (!(c instanceof Frame || c instanceof Dialog))
  			c = c.getParent();
  		return (c instanceof Frame) ? new SwingEditorDialog((Frame) c, getMolecule(), Dialog.ModalityType.DOCUMENT_MODAL) : new SwingEditorDialog((Dialog) c, getMolecule(), Dialog.ModalityType.DOCUMENT_MODAL);
  		}
  
  	public void setAllowedPseudoAtoms(int apa) {
  		mAllowedPseudoAtoms = apa;
  		}
  
  	public void setAllowQueryFeatures(boolean allow) {
  		if (mAllowQueryFeatures != allow) {
  			mAllowQueryFeatures = allow;
  			if (!allow && getMolecule().removeQueryFeatures())
  				structureChanged();
  			}
  		}
      }
  