/*
* Get Organized - Organize your schedule, course assignments, and grades
* Copyright © 2012 Alex Laird
* getorganized@alexlaird.com
* alexlaird.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package adl.go.gui;
import adl.go.types.Event;
import adl.go.types.ListItem;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.dnd.DragGestureEvent;
import java.awt.dnd.DragGestureListener;
import java.awt.dnd.DragSourceContext;
import java.awt.dnd.DragSourceDragEvent;
import java.awt.dnd.DragSourceDropEvent;
import java.awt.dnd.DragSourceEvent;
import java.awt.dnd.DragSourceListener;
import java.awt.dnd.DropTarget;
import java.awt.dnd.DropTargetDragEvent;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.dnd.DropTargetEvent;
import java.awt.dnd.DropTargetListener;
import java.io.IOException;
import java.util.Calendar;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JViewport;
/**
* The drag and drop class handles the construction and destruction of drag/drop
* events, but its functionality is limited to assignment and event objects.
*
* @author Alex Laird
*/
public class DragDrop implements DragGestureListener, DragSourceListener, DropTargetListener, Transferable
{
/**
* A reference to the view panel.
*/
private ViewPanel viewPanel;
/**
* The supported flavors for dragging and dropping.
*/
private static final DataFlavor[] supportedFlavors =
{
null
};
/**
* Set the main supported flavor for dragging and dropping.
*/
static
{
try
{
supportedFlavors[0] = new DataFlavor (DataFlavor.javaJVMLocalObjectMimeType);
}
catch (Exception ex)
{
}
}
/**
* The object being dragged.
*/
private Object object;
private int response1 = -1;
private int response2 = -1;
private boolean repeat = false;
/**
* Construct the drag and drop class with a reference to the view panel.
*
* @param viewPanel The reference to the view panel.
*/
public DragDrop(ViewPanel viewPanel)
{
this.viewPanel = viewPanel;
}
// Transferable methods.
@Override
public Object getTransferData(DataFlavor flavor)
{
if (flavor.isMimeTypeEqual (DataFlavor.javaJVMLocalObjectMimeType))
{
return object;
}
else
{
return null;
}
}
@Override
public DataFlavor[] getTransferDataFlavors()
{
return supportedFlavors;
}
@Override
public boolean isDataFlavorSupported(DataFlavor flavor)
{
return flavor.isMimeTypeEqual (DataFlavor.javaJVMLocalObjectMimeType);
}
@Override
public void dragGestureRecognized(DragGestureEvent ev)
{
try
{
response1 = viewPanel.checkAssignmentOrEventChanges (viewPanel.domain.currentIndexFromVector);
response2 = viewPanel.checkRepeatEventChanges (viewPanel.domain.currentIndexFromVector);
if (response1 != -1 || response2 != -1)
{
repeat = true;
}
ev.startDrag (null, this, this);
}
catch (Exception ex)
{
}
}
@Override
public void dragDropEnd(DragSourceDropEvent ev)
{
}
@Override
public void dragEnter(DragSourceDragEvent ev)
{
}
@Override
public void dragExit(DragSourceEvent ev)
{
}
@Override
public void dragOver(DragSourceDragEvent ev)
{
object = ev.getSource ();
}
@Override
public void dropActionChanged(DragSourceDragEvent ev)
{
}
@Override
public void dragEnter(DropTargetDragEvent ev)
{
}
@Override
public void dragExit(DropTargetEvent ev)
{
}
@Override
public void dragOver(DropTargetDragEvent ev)
{
dropTargetDrag (ev);
}
@Override
public void dropActionChanged(DropTargetDragEvent ev)
{
dropTargetDrag (ev);
}
void dropTargetDrag(DropTargetDragEvent ev)
{
ev.acceptDrag (ev.getDropAction ());
}
@Override
public void drop(DropTargetDropEvent ev)
{
ev.acceptDrop (ev.getDropAction ());
try
{
if (response1 == -1 && response2 == -1)
{
if (!repeat)
{
JPanel panel = (JPanel) ((DropTarget) ev.getSource ()).getComponent ();
JPanel targetPanel = (JPanel) ((JViewport) ((JScrollPane) panel.getComponent (1)).getComponent (0)).getComponent (0);
Object source = ev.getTransferable ().getTransferData (supportedFlavors[0]);
ListItem item = (ListItem) ((DragSourceContext) source).getComponent ().getParent ();
Calendar shownCal = viewPanel.miniCalendar.getCalendar ();
int shownMonth = shownCal.get (Calendar.MONTH);
int dayIndex = viewPanel.getIndexFromDaysArray ((JPanel) ((JScrollPane) ((JViewport) targetPanel.getParent ()).getParent ()).getParent ());
viewPanel.assignmentsTable.setSelectedRowFromVectorIndex (viewPanel.domain.utility.getAssignmentOrEventIndexByID (item.getUniqueID ()));
if (item instanceof Event)
{
Calendar cal = viewPanel.eventDateChooser.getCalendar ();
int dueMonth = Integer.parseInt (item.getDueDate ().split ("/")[0]);
if ((dueMonth == shownMonth - 1 && dueMonth - 1 != shownMonth)
|| (dueMonth == shownMonth + 11 && dueMonth - 1 != shownMonth))
{
String day = ((JLabel) panel.getComponent (0)).getText ();
int dayNum = Integer.parseInt (day);
cal.set (Calendar.DAY_OF_MONTH, dayNum);
viewPanel.eventDateChooser.setDate (cal.getTime ());
}
else if ((dueMonth == shownMonth + 1 && dueMonth - 1 != shownMonth)
|| (dueMonth == shownMonth - 11 && dueMonth - 1 != shownMonth))
{
String day = ((JLabel) panel.getComponent (0)).getText ();
int dayNum = Integer.parseInt (day);
cal.set (Calendar.DAY_OF_MONTH, dayNum);
viewPanel.eventDateChooser.setDate (cal.getTime ());
}
else
{
if (cal.get (Calendar.MONTH) == shownMonth - 1 || cal.get (Calendar.MONTH) == shownMonth + 11)
{
cal.add (Calendar.MONTH, 1);
}
else if (cal.get (Calendar.MONTH) == shownMonth + 1 || cal.get (Calendar.MONTH) == shownMonth - 11)
{
cal.add (Calendar.MONTH, -1);
}
if (dayIndex != -1)
{
cal.set (Calendar.DAY_OF_MONTH, dayIndex + 1);
viewPanel.eventDateChooser.setDate (cal.getTime ());
}
else
{
String day = ((JLabel) panel.getComponent (0)).getText ();
int dayNum = Integer.parseInt (day);
if (dayNum > 7)
{
cal.add (Calendar.MONTH, -1);
}
else
{
cal.add (Calendar.MONTH, 1);
}
cal.set (Calendar.DAY_OF_MONTH, dayNum);
viewPanel.eventDateChooser.setDate (cal.getTime ());
}
}
}
else
{
Calendar cal = viewPanel.dueDateChooser.getCalendar ();
int dueMonth = Integer.parseInt (item.getDueDate ().split ("/")[0]);
if ((dueMonth == shownMonth - 1 && dueMonth - 1 != shownMonth)
|| (dueMonth == shownMonth + 11 && dueMonth - 1 != shownMonth))
{
String day = ((JLabel) panel.getComponent (0)).getText ();
int dayNum = Integer.parseInt (day);
cal.set (Calendar.DAY_OF_MONTH, dayNum);
viewPanel.eventDateChooser.setDate (cal.getTime ());
}
else if ((dueMonth == shownMonth + 1 && dueMonth - 1 != shownMonth)
|| (dueMonth == shownMonth - 11 && dueMonth - 1 != shownMonth))
{
String day = ((JLabel) panel.getComponent (0)).getText ();
int dayNum = Integer.parseInt (day);
cal.set (Calendar.DAY_OF_MONTH, dayNum);
viewPanel.eventDateChooser.setDate (cal.getTime ());
}
else
{
if (cal.get (Calendar.MONTH) == shownMonth - 1 || cal.get (Calendar.MONTH) == shownMonth + 11)
{
cal.add (Calendar.MONTH, 1);
}
else if (cal.get (Calendar.MONTH) == shownMonth + 1 || cal.get (Calendar.MONTH) == shownMonth - 11)
{
cal.add (Calendar.MONTH, -1);
}
if (dayIndex != -1)
{
cal.set (Calendar.DAY_OF_MONTH, dayIndex + 1);
viewPanel.dueDateChooser.setDate (cal.getTime ());
}
else
{
String day = ((JLabel) panel.getComponent (0)).getText ();
int dayNum = Integer.parseInt (day);
if (dayNum > 7)
{
cal.add (Calendar.MONTH, -1);
}
else
{
cal.add (Calendar.MONTH, 1);
}
cal.set (Calendar.DAY_OF_MONTH, dayNum);
viewPanel.dueDateChooser.setDate (cal.getTime ());
}
}
}
viewPanel.scrollToItemOrToday (item);
}
repeat = false;
}
}
catch (UnsupportedFlavorException ex)
{
}
catch (IOException ex)
{
}
ev.dropComplete (true);
}
}