/*
* Pomodoro4NB - Netbeans plugin for work with The Pomodoro Technique
* Copyright (C) 2011 Alexey Matveev <mvaleksej@gmail.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 org.matveev.pomodoro4nb.task;
import java.awt.Cursor;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.dnd.DragSource;
import java.awt.event.MouseEvent;
import javax.swing.JComponent;
import javax.swing.event.MouseInputListener;
import javax.swing.plaf.basic.BasicTableUI;
/**
*
* @author Alexey Matveev
*/
/*package*/ class TaskTableDragAndDropUI extends BasicTableUI {
private boolean isDragging;
private int startPoint;
private int offsetY;
/*package*/ TaskTableDragAndDropUI() {
}
@Override
protected MouseInputListener createMouseInputListener() {
return new DragDropRowMouseInputHandler();
}
@Override
public void paint(Graphics g, JComponent c) {
super.paint(g, c);
if (isDragging) {
g.setColor(table.getParent().getBackground());
Rectangle cellRect = table.getCellRect(table.getSelectedRow(), 0, false);
g.copyArea(cellRect.x, cellRect.y, table.getWidth(), table.getRowHeight(), cellRect.x, offsetY);
if (offsetY < 0) {
g.fillRect(cellRect.x, cellRect.y + (table.getRowHeight() + offsetY), table.getWidth(), offsetY * -1);
} else {
g.fillRect(cellRect.x, cellRect.y, table.getWidth(), offsetY);
}
}
}
private class DragDropRowMouseInputHandler extends MouseInputHandler {
@Override
public void mousePressed(MouseEvent e) {
super.mousePressed(e);
startPoint = (int) e.getPoint().getY();
table.setCursor(DragSource.DefaultMoveDrop);
}
@Override
public void mouseDragged(MouseEvent e) {
table.setCursor(table.getBounds().contains(e.getPoint())
? DragSource.DefaultMoveDrop
: DragSource.DefaultMoveNoDrop);
int fromIndex = table.getSelectedRow();
if (fromIndex >= 0) {
isDragging = true;
int rowHeight = table.getRowHeight();
int middleOfSelectedRow = (rowHeight * fromIndex) + (rowHeight / 2);
int toIndex = -1;
int yMousePoint = (int) e.getPoint().getY();
if (yMousePoint < (middleOfSelectedRow - rowHeight)) {
toIndex = fromIndex - 1;
} else if (yMousePoint > (middleOfSelectedRow + rowHeight)) {
toIndex = fromIndex + 1;
}
if (toIndex >= 0 && toIndex < table.getRowCount()) {
final TaskTable taskTable = (TaskTable) table;
TaskTableModel model = taskTable.getTaskTableModel();
for (int i = 0; i < model.getColumnCount(); i++) {
model.moveTask(fromIndex, toIndex);
}
taskTable.selectNextRow(toIndex);
startPoint = yMousePoint;
}
offsetY = (startPoint - yMousePoint) * -1;
table.repaint();
}
}
@Override
public void mouseReleased(MouseEvent e) {
super.mouseReleased(e);
isDragging = false;
table.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
table.repaint();
}
}
}