/*
* Freeplane - mind map editor
* Copyright (C) 2011 dimitry
*
* This file author is dimitry
*
* 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 2 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.freeplane.view.swing.map.attribute;
import java.awt.Component;
import java.awt.Cursor;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.net.URI;
import javax.swing.Icon;
/**
* @author Dimitry Polivaev
* Mar 4, 2011
*/
class CursorUpdater extends MouseAdapter implements MouseMotionListener{
public void mouseDragged(MouseEvent e) {
}
public void mouseMoved(MouseEvent e) {
updateCursor(e);
}
@Override
public void mouseEntered(MouseEvent e) {
updateCursor(e);
}
@Override
public void mouseExited(MouseEvent e) {
updateCursor(e.getComponent(), Cursor.DEFAULT_CURSOR);
}
private void updateCursor(MouseEvent e) {
final int cursor = getCursor(e);
updateCursor(e.getComponent(), cursor);
}
private int getCursor(MouseEvent e) {
final AttributeTable table = (AttributeTable) e.getComponent();
final Point point = e.getPoint();
final int col = table.columnAtPoint(point);
if(col != 1){
return Cursor.DEFAULT_CURSOR;
}
final int row = table.rowAtPoint(e.getPoint());
if(row == -1 || row >= table.getRowCount()){
return Cursor.DEFAULT_CURSOR;
}
Object value = table.getValueAt(row, col);
if(!(value instanceof URI)){
return Cursor.DEFAULT_CURSOR;
}
final Icon linkIcon = table.getLinkIcon((URI) value);
if (linkIcon == null)
return Cursor.DEFAULT_CURSOR;
final int leftColumnWidth = table.getColumnModel().getColumn(0).getWidth();
if (point.x < leftColumnWidth + linkIcon.getIconWidth()) {
return Cursor.HAND_CURSOR;
}
return Cursor.DEFAULT_CURSOR;
}
private void updateCursor(Component component, int cursor) {
final Cursor newCursor = Cursor.getPredefinedCursor(cursor);
if( component.getCursor().equals(newCursor))
return;
component.setCursor(cursor == Cursor.DEFAULT_CURSOR ? null : newCursor);
}
}