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/*
* Copyright (c) 2011, 2013, 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
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*/
package com.sun.javafx.scene.control.behavior;
import java.util.ArrayList;
import java.util.List;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.scene.control.Accordion;
import javafx.scene.control.FocusModel;
import javafx.scene.control.TitledPane;
import javafx.scene.input.KeyCode;
import javafx.scene.input.MouseEvent;
public class AccordionBehavior extends BehaviorBase {
private AccordionFocusModel focusModel;
public AccordionBehavior(Accordion accordion) {
super(accordion);
focusModel = new AccordionFocusModel(accordion);
}
/***************************************************************************
* *
* Key event handling *
* *
**************************************************************************/
private static final String HOME = "Home";
private static final String END = "End";
private static final String PAGE_UP = "Page_Up";
private static final String PAGE_DOWN = "Page_Down";
private static final String CTRL_PAGE_UP = "Ctrl_Page_Up";
private static final String CTRL_PAGE_DOWN = "Ctrl_Page_Down";
private static final String CTRL_TAB = "Ctrl_Tab";
private static final String CTRL_SHIFT_TAB = "Ctrl_Shift_Tab";
protected static final List ACCORDION_BINDINGS = new ArrayList();
static {
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.UP, "TraverseUp"));
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.DOWN, "TraverseDown"));
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.LEFT, "TraverseLeft"));
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.RIGHT, "TraverseRight"));
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.HOME, HOME));
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.END, END));
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.PAGE_UP, PAGE_UP));
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.PAGE_DOWN, PAGE_DOWN));
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.PAGE_UP, CTRL_PAGE_UP).ctrl());
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.PAGE_DOWN, CTRL_PAGE_DOWN).ctrl());
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.TAB, CTRL_TAB).ctrl());
ACCORDION_BINDINGS.add(new KeyBinding(KeyCode.TAB, CTRL_SHIFT_TAB).shift().ctrl());
}
@Override protected List createKeyBindings() {
return ACCORDION_BINDINGS;
}
@Override protected void callAction(String name) {
Accordion accordion = getControl();
if ("TraverseLeft".equals(name) || "TraverseUp".equals(name) || PAGE_UP.equals(name)) {
if (focusModel.getFocusedIndex() != -1 && accordion.getPanes().get(focusModel.getFocusedIndex()).isFocused()) {
focusModel.focusPrevious();
int next = focusModel.getFocusedIndex();
accordion.getPanes().get(next).requestFocus();
if (PAGE_UP.equals(name)) {
accordion.getPanes().get(next).setExpanded(true);
}
}
} else if ("TraverseRight".equals(name) || "TraverseDown".equals(name) || PAGE_DOWN.equals(name)) {
if (focusModel.getFocusedIndex() != -1 && accordion.getPanes().get(focusModel.getFocusedIndex()).isFocused()) {
focusModel.focusNext();
int next = focusModel.getFocusedIndex();
accordion.getPanes().get(next).requestFocus();
if (PAGE_DOWN.equals(name)) {
accordion.getPanes().get(next).setExpanded(true);
}
}
} else if (CTRL_TAB.equals(name) || CTRL_PAGE_DOWN.equals(name)) {
focusModel.focusNext();
if (focusModel.getFocusedIndex() != -1) {
int next = focusModel.getFocusedIndex();
accordion.getPanes().get(next).requestFocus();
accordion.getPanes().get(next).setExpanded(true);
}
} else if (CTRL_SHIFT_TAB.equals(name) || CTRL_PAGE_UP.equals(name)) {
focusModel.focusPrevious();
if (focusModel.getFocusedIndex() != -1) {
int next = focusModel.getFocusedIndex();
accordion.getPanes().get(next).requestFocus();
accordion.getPanes().get(next).setExpanded(true);
}
} else if (HOME.equals(name)) {
if (focusModel.getFocusedIndex() != -1 && accordion.getPanes().get(focusModel.getFocusedIndex()).isFocused()) {
TitledPane tp = accordion.getPanes().get(0);
tp.requestFocus();
tp.setExpanded(!tp.isExpanded());
}
} else if (END.equals(name)) {
if (focusModel.getFocusedIndex() != -1 && accordion.getPanes().get(focusModel.getFocusedIndex()).isFocused()) {
TitledPane tp = accordion.getPanes().get(accordion.getPanes().size() - 1);
tp.requestFocus();
tp.setExpanded(!tp.isExpanded());
}
} else {
super.callAction(name);
}
}
/*
** mouse press over the background of the accordian
** i.e. it missed all of the titledpanes
** select the last titledpane, or the accoridan if
** none present
*/
public void mousePressed(MouseEvent e) {
Accordion accordion = getControl();
if (accordion.getPanes().size() > 0) {
TitledPane lastTitledPane = accordion.getPanes().get(accordion.getPanes().size() - 1);
lastTitledPane.requestFocus();
}
else {
accordion.requestFocus();
}
}
static class AccordionFocusModel extends FocusModel {
private final Accordion accordion;
public AccordionFocusModel(final Accordion accordion) {
if (accordion == null) {
throw new IllegalArgumentException("Accordion can not be null");
}
this.accordion = accordion;
this.accordion.focusedProperty().addListener(new ChangeListener() {
@Override
public void changed(ObservableValue observable, Boolean oldValue, Boolean newValue) {
if (newValue) {
if (accordion.getExpandedPane() != null) {
accordion.getExpandedPane().requestFocus();
} else {
// TODO need to detect the focus direction
// to selected the first panel when TAB is pressed
// or select the last panel when SHIFT TAB is pressed.
accordion.getPanes().get(0).requestFocus();
}
}
}
});
this.accordion.getPanes().addListener(new ListChangeListener() {
@Override public void onChanged(Change c) {
// TODO need to remove the listeners.
while (c.next()) {
if (c.wasAdded()) {
for (final TitledPane tp: c.getAddedSubList()) {
tp.focusedProperty().addListener(new ChangeListener() {
@Override
public void changed(ObservableValue observable, Boolean oldValue, Boolean newValue) {
if (newValue) {
focus(accordion.getPanes().indexOf(tp));
}
}
});
}
}
}
}
});
for (final TitledPane tp: this.accordion.getPanes()) {
tp.focusedProperty().addListener(new ChangeListener() {
@Override
public void changed(ObservableValue observable, Boolean oldValue, Boolean newValue) {
if (newValue) {
focus(accordion.getPanes().indexOf(tp));
}
}
});
}
}
@Override
protected int getItemCount() {
final ObservableList panes = accordion.getPanes();
return panes == null ? 0 : panes.size();
}
@Override
protected TitledPane getModelItem(int row) {
final ObservableList panes = accordion.getPanes();
if (panes == null) return null;
if (row < 0) return null;
return panes.get(row%panes.size());
}
@Override public void focusPrevious() {
if (getFocusedIndex() <= 0) {
focus(accordion.getPanes().size() - 1);
} else {
focus((getFocusedIndex() - 1)%accordion.getPanes().size());
}
}
@Override public void focusNext() {
if (getFocusedIndex() == -1) {
focus(0);
} else {
focus((getFocusedIndex() + 1)%accordion.getPanes().size());
}
}
}
}
