MatrixDialog.java

package net.squiz.matrix.ui;

import net.squiz.matrix.plaf.MatrixLookAndFeel;
import net.squiz.matrix.matrixtree.*;
import net.squiz.matrix.core.*;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.event.*;
import java.awt.*;
import java.util.*;

public class MatrixDialog extends JDialog {

    private int x= -1;
    private int y= -1;
    private static HashMap dialogs = new HashMap();
    public Cursor HAND_CURSOR = new Cursor(Cursor.HAND_CURSOR);
    public Cursor DEFAULT_CURSOR = new Cursor(Cursor.DEFAULT_CURSOR);

    public MatrixDialog() {
        setUndecorated(true);
        setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
    }

    public static MatrixDialog getDialog(Class cls) {
        return (MatrixDialog) dialogs.get(cls);
    }

    public static void putDialog(MatrixDialog dialog) {
        dialogs.put(dialog.getClass(), dialog);
    }

    public static boolean hasDialog(Class cls) {
        return dialogs.containsKey(cls);
    }

    public void dispose() {
        dialogs.remove(getClass());
        super.dispose();
    }


    Point prevLoc;

    public Point getPrevLoc() {
        return prevLoc;
    }

    private void setPrevLoc(Point prevLoc) {
        this.prevLoc = prevLoc;
    }


    public void centerDialogOnTree(Point locationOnScreen, Dimension treeDimension, Point prevLoc) {
        setPrevLoc(prevLoc);

        int locX = (int)locationOnScreen.getX()+(int)((treeDimension.getWidth()/2)-(getWidth()/2));
        if (locX < 0) {
            locX = 5;
        }

        setLocation(locX,(int)(locationOnScreen.getY()+(treeDimension.getHeight()/3)), false);
    }

    public JPanel getTopPanel(String dialogTitle) {
        JPanel topPanel = new JPanel();
        topPanel.setBorder(new EmptyBorder(0, 0, 0, 0));
        topPanel.setBackground(MatrixLookAndFeel.PANEL_COLOUR);

        JLabel title = new JLabel(dialogTitle);
        title.setFont(MatrixTreeBus.getActiveTree().getFontInUse());
        title.setHorizontalTextPosition(SwingConstants.CENTER);
        title.setOpaque(false);
        title.setForeground(Color.black);

        topPanel.add(title);
        enableDrag(topPanel);

        return topPanel;
    }

    public void closeOnClick(final JLabel component, final String img_prefix) {
        component.addMouseListener(new MouseAdapter(){
            public void mouseClicked(MouseEvent e){
                setCursor(DEFAULT_CURSOR);
                dispose();
            }

            public void mouseExited(MouseEvent e) {
                component.setIcon(GUIUtilities.getAssetMapIcon(img_prefix + ".png"));
                setCursor(DEFAULT_CURSOR);
            }

            public void mouseEntered(MouseEvent e) {
                setCursor(HAND_CURSOR);
                component.setIcon(GUIUtilities.getAssetMapIcon(img_prefix + "_on.png"));
            }
        });
    }

    public void enableDrag(final JComponent component) {
        component.addMouseListener(new MouseAdapter(){
            public void mouseReleased(MouseEvent e){
                x = e.getX();
                y = e.getY();
            }
            public void mousePressed(MouseEvent e){
                x = e.getX();
                y = e.getY();
            }
        });

        component.addMouseMotionListener(new MouseMotionAdapter(){
            public void mouseDragged(MouseEvent e){
                int posX = getLocationOnScreen().x+(e.getX()-x);
                int posY = getLocationOnScreen().y+(e.getY()-y);
                setLocation(posX, posY, true);
                setPrevLoc(new Point(posX, posY));
            }
        });
    }



    public void setLocation(int x, int y, boolean force) {
        if (force || (getPrevLoc() == null)) {
            super.setLocation(x, y);
        } else {
            x = (int)getPrevLoc().getX();
            y = (int)getPrevLoc().getY();
            super.setLocation(x, y);
        }
        setPrevLoc(new Point(x, y));
    }
}