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Open Source Chemistry Library
/*
* 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.
*
*/
package com.actelion.research.gui.dnd;
import com.actelion.research.chem.*;
import com.actelion.research.chem.dnd.ChemistryFlavors;
import com.actelion.research.chem.name.StructureNameResolver;
import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.dnd.*;
public class MoleculeDropAdapter implements DropTargetListener
{
public static final boolean debug = false;
private boolean active_ = true;
private final int mAllowedDropAction = DnDConstants.ACTION_COPY_OR_MOVE; // changed TLS 9-Jul-04
public MoleculeDropAdapter()
{
}
public void onDropMolecule(StereoMolecule m, Point pt)
{
DEBUG("MoleculeDropAdapter.onDropMolecule(). Override this! " + m);
}
@Override
public void dragEnter(DropTargetDragEvent e)
{
DEBUG("DragEnter");
}
@Override
public void dragOver(DropTargetDragEvent e)
{
DEBUG("DragOver");
}
public void setActive(boolean active)
{
active_ = active;
}
public boolean isActive()
{
return active_;
}
@Override
public void dropActionChanged(DropTargetDragEvent e)
{
DEBUG("dropActionChanged");
}
@Override
public void dragExit(DropTargetEvent e)
{
DEBUG("dragExit");
}
@Override
public void drop(DropTargetDropEvent e)
{
if (active_) {
// This is neccesary to make sure the correct classloader tries to load the Transferable
ClassLoader cl = this.getClass().getClassLoader();
DEBUG("MoleculeDropAdapter ClassLoader " + cl);
DEBUG("MoleculeDropAdapter Ignoring setContextclassloader!!!");
// Thread.currentThread().setContextClassLoader(cl);
DEBUG("MoleculeDropAdapter " + e);
try {
Transferable tr = e.getTransferable();
DEBUG("Transferable is " + tr);
DataFlavor chosen = chooseDropFlavor(e);
StereoMolecule mol = null;
if (chosen != null) {
e.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
DEBUG("Chose is " + chosen);
Object o = tr.getTransferData(chosen);
DEBUG("Object is " + o);
mol = createFromDataFlavor(chosen,o);
if (mol != null) {
onDropMolecule(mol,e.getLocation());
e.dropComplete(true);
} else {
System.err.println("Drop failed: " + e);
e.dropComplete(false);
}
return;
} else {
System.err.println("Drop failed: " + e);
e.rejectDrop();
}
} catch (Exception ex) {
ex.printStackTrace();
}
} // active_
}
public DataFlavor[] getFlavors()
{
return ChemistryFlavors.MOLECULE_FLAVORS;
}
protected StereoMolecule createFromDataFlavor(DataFlavor chosen, Object o) throws Exception
{
StereoMolecule mol = null;
if (chosen.equals(ChemistryFlavors.DF_SERIALIZED_MOLECULE) && o instanceof Molecule) {
mol = new StereoMolecule((Molecule)o);
} else if (chosen.equals(ChemistryFlavors.DF_MDLMOLFILE)
&& o instanceof String) {
mol = new StereoMolecule();
new MolfileParser().parse(mol, (String)o);
} else if (chosen.equals(ChemistryFlavors.DF_SMILES) && o instanceof String) {
mol = new StereoMolecule();
new SmilesParser().parse(mol, (String)o);
} else if (chosen.equals(ChemistryFlavors.DF_IDCODE) && o instanceof String) {
mol = new StereoMolecule();
new IDCodeParser(true).parse(mol, (String)o);
} else if (chosen.equals(DataFlavor.stringFlavor) && o instanceof String) {
try {
mol = new StereoMolecule();
new IDCodeParser(true).parse(mol, (String)o);
} catch(Throwable t) {
mol = StructureNameResolver.resolve((String) o);
}
if (mol == null)
System.err.println("Unable to instantiate from text flavor: " + o);
} else {
System.err.println("Unable to instantiate flavor: " + chosen);
// throw new InstantiationException("Unable to instantiate flavor " + chosen);
}
return mol;
}
protected boolean isDragFlavorSupported(DropTargetDragEvent e)
{
for (int i=0; i