SystemTray/src/dorkbox/systemTray/swing/SwingSystemTrayMenuPopup.java

72 lines
2.5 KiB
Java

/*
* Copyright 2014 dorkbox, llc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dorkbox.systemTray.swing;
import java.awt.Frame;
import java.awt.event.WindowEvent;
import java.awt.event.WindowFocusListener;
import javax.swing.JDialog;
import javax.swing.JPopupMenu;
import javax.swing.border.EmptyBorder;
/**
* This custom popup is required, because we cannot close this popup by clicking OUTSIDE the popup. For whatever reason, that does not
* work, so we must implement an "auto-hide" feature that checks if our mouse is still inside a menu every POPUP_HIDE_DELAY seconds
*/
public
class SwingSystemTrayMenuPopup extends JPopupMenu {
private static final long serialVersionUID = 1L;
// NOTE: we can use the "hidden dialog" focus window trick... only on windows and mac
private JDialog hiddenDialog;
SwingSystemTrayMenuPopup() {
super();
setFocusable(true);
// setBorder(new BorderUIResource.EmptyBorderUIResource(0, 0, 0, 0)); // borderUI resource border type will get changed!
setBorder(new EmptyBorder(1, 1, 1, 1));
// Does not work correctly on linux. a window in the taskbar still shows up
// Initialize the hidden dialog as a headless, titleless dialog window
this.hiddenDialog = new JDialog((Frame)null);
this.hiddenDialog.setEnabled(false);
this.hiddenDialog.setUndecorated(true);
this.hiddenDialog.setSize(1, 1);
// Add the window focus listener to the hidden dialog
this.hiddenDialog.addWindowFocusListener(new WindowFocusListener() {
@Override
public void windowLostFocus (WindowEvent we ) {
SwingSystemTrayMenuPopup.this.setVisible(false);
}
@Override
public void windowGainedFocus (WindowEvent we) {}
});
}
@Override
public
void setVisible(boolean makeVisible) {
this.hiddenDialog.setVisible(makeVisible);
this.hiddenDialog.setEnabled(false);
super.setVisible(makeVisible);
}
}