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org.webswing.toolkit.extra.WindowEventHandler Maven / Gradle / Ivy
package org.webswing.toolkit.extra;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.event.MouseEvent;
import java.awt.event.WindowEvent;
import java.util.HashMap;
import java.util.Map;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import org.webswing.common.WindowActionType;
public class WindowEventHandler {
private Map previousSize = new HashMap();
private boolean lockedOnEvent;
private WindowActionType lockEventType;
private Point referenceMouseLocation;
private Window window;
private static final Dimension DEFAULT_MINIMUM_WINDOW_SIZE = new Dimension(100, 25);
public void handle(WindowActionType wat, MouseEvent e) {
if (!lockedOnEvent) {
if (MouseEvent.MOUSE_PRESSED == e.getID() && ((MouseEvent) e).getButton() == 1) {
lockedOnEvent = true;
lockEventType = wat;
referenceMouseLocation = e.getPoint();
window = (Window) (e.getSource() instanceof Window ? e.getSource() : SwingUtilities.windowForComponent((Component) e.getSource()));
}
} else {
switch (lockEventType) {
case minimize:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
Rectangle o = w.getBounds();
resizeWindow(w, 0, 0);
if (o.getSize().equals(w.getSize()) && previousSize.containsKey(w)) {
// restore previous size
o = previousSize.get(w);
moveWindow(w, o.x, o.y);
resizeWindow(w, o.width, o.height);
} else {
Rectangle r = w.getBounds();
// move to the middle of original size
moveWindow(w, (o.x + (o.width / 2)) - (r.width / 2), (o.y + (o.height / 2)) - (r.height / 2));
}
if (w instanceof JFrame) {
((JFrame) w).setExtendedState(JFrame.NORMAL);
}
previousSize.put(w, o);
lockedOnEvent = false;
}
break;
case maximize:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
if (wat.equals(WindowActionType.maximize)) {
Window w = (Window) e.getSource();
Rectangle o = w.getBounds();
Dimension size = Toolkit.getDefaultToolkit().getScreenSize();
if (o.x == 0 && o.y == 0 && o.width == size.width && o.height == size.height && previousSize.containsKey(w)) {
// restore previous size
o = previousSize.get(w);
moveWindow(w, o.x, o.y);
resizeWindow(w, o.width, o.height);
if (w instanceof JFrame) {
((JFrame) w).setExtendedState(JFrame.NORMAL);
}
} else {
if (w instanceof JFrame) {
((JFrame) w).setExtendedState(JFrame.MAXIMIZED_BOTH);
} else {
moveWindow(w, 0, 0);
resizeWindow(w, size.width, size.height);
}
}
previousSize.put(w, o);
}
lockedOnEvent = false;
}
break;
case close:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
if (wat.equals(WindowActionType.close)) {
Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(new WindowEvent((Window) e.getSource(), WindowEvent.WINDOW_CLOSING));
}
lockedOnEvent = false;
}
break;
case move:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID()) {
Window w = (Window) e.getSource();
moveWindow(w, e.getXOnScreen() - referenceMouseLocation.x, e.getYOnScreen() - referenceMouseLocation.y);
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
case resizeUniTopLeft:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID()) {
Window w = (Window) e.getSource();
Rectangle wb = w.getBounds();
Dimension wMinSize = getMinimumWindowSize(w);
Point stopPoint = new Point(wb.x + wb.width - wMinSize.width, wb.y + wb.height - wMinSize.height);
int x = (int) Math.min(e.getXOnScreen(), stopPoint.getX());
int y = (int) Math.min(e.getYOnScreen(), stopPoint.getY());
int width = wb.x + wb.width - x;
int height = wb.y + wb.height - y;
resizeAndMoveWindow(w, x, y, width, height);
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
case resizeUniTopRight:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID()) {
Window w = (Window) e.getSource();
Rectangle wb = w.getBounds();
Dimension wMinSize = getMinimumWindowSize(w);
Point stopPoint = new Point(wb.x + wMinSize.width, wb.y + wb.height - wMinSize.height);
int x = wb.x;
int y = (int) Math.min(e.getYOnScreen(), stopPoint.getY());
int width = e.getXOnScreen() - wb.x;
int height = wb.y + wb.height - y;
resizeAndMoveWindow(w, x, y, width, height);
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
case resizeUniBottomLeft:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID() ) {
Window w = (Window) e.getSource();
Rectangle wb = w.getBounds();
Dimension wMinSize = getMinimumWindowSize(w);
Point stopPoint = new Point(wb.x + wb.width - wMinSize.width, wb.y + wMinSize.height);
int x = (int) Math.min(e.getXOnScreen(), stopPoint.getX());
int y = wb.y;
int width = wb.x + wb.width - x;
int height = e.getYOnScreen() - wb.y;
resizeAndMoveWindow(w, x, y, width, height);
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
case resizeUniBottomRight:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID()) {
Window w = (Window) e.getSource();
resizeWindow(w, e.getXOnScreen() - w.getX(), e.getYOnScreen() - w.getY());
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
case resizeRight:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID()) {
Window w = (Window) e.getSource();
resizeWindow(w, e.getXOnScreen() - w.getX(), w.getSize().height);
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
case resizeLeft:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID() ) {
Window w = (Window) e.getSource();
Rectangle wb = w.getBounds();
Dimension wMinSize = getMinimumWindowSize(w);
int x = (int) Math.min(e.getXOnScreen(), wb.x + wb.width - wMinSize.width);
int width = wb.x + wb.width - x;
resizeAndMoveWindow(w, x, wb.y, width, wb.height);
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
case resizeBottom:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID()) {
Window w = (Window) e.getSource();
resizeWindow(w, w.getSize().width, e.getYOnScreen() - w.getY());
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
case resizeTop:
if (MouseEvent.MOUSE_RELEASED == e.getID() && ((MouseEvent) e).getButton() == 1) {
Window w = (Window) e.getSource();
previousSize.remove(w);
lockedOnEvent = false;
}
if (MouseEvent.MOUSE_DRAGGED == e.getID() ) {
Window w = (Window) e.getSource();
Rectangle wb = w.getBounds();
Dimension wMinSize = getMinimumWindowSize(w);
int y = (int) Math.min(e.getYOnScreen(), wb.y + wb.height - wMinSize.height);
int height = wb.y + wb.height - y;
resizeAndMoveWindow(w, wb.x, y, wb.width, height);
}
if (e.getSource() instanceof JFrame) {
((JFrame) e.getSource()).setExtendedState(JFrame.NORMAL);
}
break;
default:
lockedOnEvent = false;
}
}
}
private Dimension getMinimumWindowSize(Window w) {
return w.getMinimumSize();
}
public void moveWindow(Window w, int x, int y) {
w.setLocation(x, y);
}
public void resizeWindow(final Window w, int width, int height) {
if (w instanceof JFrame) {
((JFrame) w).setExtendedState(JFrame.NORMAL);
}
final Dimension originalSize = w.getSize();
final Dimension newSize = new Dimension(width, height);
validateSize(w, newSize);
if (!originalSize.equals(newSize)) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
w.setSize(newSize);
WindowManager.getInstance().requestRepaintAfterMove(w, new Rectangle(w.getX(), w.getY(), originalSize.width, originalSize.height));
}
});
}
}
public void resizeAndMoveWindow(final Window w, final int x, final int y, int width, int height) {
if (w instanceof JFrame) {
((JFrame) w).setExtendedState(JFrame.NORMAL);
}
final Dimension originalSize = w.getSize();
final Dimension newSize = new Dimension(width, height);
validateSize(w, newSize);
if (!originalSize.equals(newSize)) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
w.setSize(newSize);
w.setLocation(x, y);
WindowManager.getInstance().requestRepaintAfterMove(w, new Rectangle(w.getX(), w.getY(), originalSize.width, originalSize.height));
}
});
}
}
private void validateSize(Window w, Dimension newSize) {
Dimension min = w.getMinimumSize();
newSize.width = Math.max(min.width, newSize.width);
newSize.width = Math.max(DEFAULT_MINIMUM_WINDOW_SIZE.width, newSize.width);
newSize.height = Math.max(min.height, newSize.height);
newSize.height = Math.max(DEFAULT_MINIMUM_WINDOW_SIZE.height, newSize.height);
}
public boolean isEventHandlingLocked() {
if (lockedOnEvent && (window == null || !window.isEnabled() || !window.isShowing())) {
lockedOnEvent = false;
}
return lockedOnEvent;
}
public Window getLockedToWindow() {
if (isEventHandlingLocked()) {
return window;
}
return null;
}
}
