javafx.scene.control.CustomMenuItem Maven / Gradle / Ivy
/*
* Copyright (c) 2010, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javafx.scene.control;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.scene.Node;
/**
*
* A {@link MenuItem} that allows for arbitrary nodes to be embedded within it,
* by assigning a {@link Node} to the {@link #contentProperty() content} property.
* CustomMenuItem attempts to make arbitrary nodes
* appear more natural in the Menu. For
* example, you automatically get hover highlighting when the user hovers their
* mouse over the node (or navigates to it using keyboard or other alternate means).
*
* A useful property of this class is
* {@link #hideOnClickProperty() hideOnClick}. This boolean specifies whether the CustomMenuItem
* will be automatically hidden should the user click within the bounds of the
* CustomMenuItem.
* This is of particular use when the node inside this CustomMenuItem is a
* control that requires user interaction, as by setting the hideOnClick
* property to false means the user can interact with it without the menu hiding.
* Note that by default hideOnClick is true.
*
* An example of how to use CustomMenuItem is shown below.
*
*
CustomMenuItem customMenuItem = new CustomMenuItem(new Slider());
* customMenuItem.setHideOnClick(false);
*
* Menu menu = new Menu("Brightness");
* menu.getItems().add(customMenuItem);
* MenuBar menuBar = new MenuBar(menu);
*
* 
*
*
* The slider is horizontally centered when the menu is visible, and interacting
* with the slider will not result in the menu disappearing.
*
* @see MenuItem
* @see Menu
* @since JavaFX 2.0
*/
public class CustomMenuItem extends MenuItem {
/* *************************************************************************
* *
* Constructors *
* *
**************************************************************************/
/**
* Creates a default CustomMenuItem instance.
*/
public CustomMenuItem() {
this(null, true);
}
/**
* Constructs a CustomMenuItem and initializes its content with the node specified.
* @param node to be embedded inside this CustomMenuItem
*/
public CustomMenuItem(Node node) {
this(node, true);
}
/**
* Constructs a CustomMenuItem and sets the content to the node specified.
* @param node to be embedded inside this CustomMenuItem
* @param hideOnClick if false the menu will not hide when the user interacts with the node.
*/
public CustomMenuItem(Node node, boolean hideOnClick) {
getStyleClass().add(DEFAULT_STYLE_CLASS);
setContent(node);
setHideOnClick(hideOnClick);
}
/* *************************************************************************
* *
* Properties *
* *
**************************************************************************/
/**
* The node to display within this CustomMenuItem.
*/
private ObjectProperty content;
public final void setContent(Node value) {
contentProperty().set(value);
}
public final Node getContent() {
return content == null ? null : content.get();
}
public final ObjectProperty contentProperty() {
if (content == null) {
content = new SimpleObjectProperty(this, "content");
}
return content;
}
/**
* If true, this menu item, and all visible menus, will be hidden when this
* menu item is clicked on.
*
* @defaultValue true
*/
private BooleanProperty hideOnClick;
public final void setHideOnClick(boolean value) {
hideOnClickProperty().set(value);
}
public final boolean isHideOnClick() {
return hideOnClick == null ? true : hideOnClick.get();
}
public final BooleanProperty hideOnClickProperty() {
if (hideOnClick == null) {
hideOnClick = new SimpleBooleanProperty(this, "hideOnClick", true);
}
return hideOnClick;
}
/* *************************************************************************
* *
* Stylesheet Handling *
* *
**************************************************************************/
private static final String DEFAULT_STYLE_CLASS = "custom-menu-item";
}