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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.collections.ObservableList;
import javafx.event.Event;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.control.SingleSelectionModel;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.input.KeyCode;
import javafx.scene.input.MouseEvent;
import com.sun.javafx.scene.control.skin.TabPaneSkin;
import com.sun.javafx.scene.traversal.Direction;
public class TabPaneBehavior extends BehaviorBase {
/**************************************************************************
* Setup KeyBindings *
*************************************************************************/
private static final String HOME = "Home";
private static final String END = "End";
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 TABPANE_BINDINGS = new ArrayList();
static {
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.UP, "TraverseUp"));
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.DOWN, "TraverseDown"));
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.LEFT, "TraverseLeft"));
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.RIGHT, "TraverseRight"));
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.TAB, "TraverseNext"));
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.TAB, "TraversePrevious").shift());
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.HOME, HOME));
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.END, END));
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.PAGE_UP, CTRL_PAGE_UP).ctrl());
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.PAGE_DOWN, CTRL_PAGE_DOWN).ctrl());
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.TAB, CTRL_TAB).ctrl());
TABPANE_BINDINGS.add(new KeyBinding(KeyCode.TAB, CTRL_SHIFT_TAB).shift().ctrl());
}
@Override protected List createKeyBindings() {
return TABPANE_BINDINGS;
}
@Override protected void callAction(String name) {
if ("TraverseLeft".equals(name) ||
"TraverseUp".equals(name)) {
if (getControl().isFocused()) {
selectPreviousTab();
}
} else if ("TraverseRight".equals(name)
|| "TraverseDown".equals(name)) {
if (getControl().isFocused()) {
selectNextTab();
}
} else if ("TraverseNext".equals(name)) {
TabPane tp = getControl();
TabPaneSkin tps = (TabPaneSkin)tp.getSkin();
if (tps.getSelectedTabContentRegion() != null) {
if (tps.getSelectedTabContentRegion().getImpl_traversalEngine().registeredNodes.isEmpty()) {
tps.getSelectedTabContentRegion().getImpl_traversalEngine().getTopLeftFocusableNode();
Parent traversableParent = null;
traversableParent = getFirstPopulatedInnerTraversalEngine(tps.getSelectedTabContentRegion().getChildren());
if (traversableParent != null) {
boolean nodeFound = false;
for (Node n : traversableParent.getImpl_traversalEngine().registeredNodes) {
if (!n.isFocused() && n.impl_isTreeVisible() && !n.isDisabled()) {
n.requestFocus();
nodeFound = true;
break;
}
}
if (nodeFound == false) {
super.callAction(name);
}
}
else {
super.callAction(name);
}
}
else {
/*
** if we have the focus owner then traverse from it, otherwise
** request focus in the top-left
*/
List children = tps.getSelectedTabContentRegion().getChildrenUnmodifiable();
Node focusNode = tps.getSelectedTabContentRegion().getScene().getFocusOwner();
if (focusNode != null && (isChildFocused(focusNode, children) == true)) {
focusNode.impl_traverse(Direction.NEXT);
}
else {
focusFirstChild(children);
}
}
} else {
super.callAction(name);
}
} else if ("TraversePrevious".equals(name)) {
TabPane tp = getControl();
TabPaneSkin tps = (TabPaneSkin)tp.getSkin();
if (tps.getSelectedTabContentRegion() != null) {
if (tps.getSelectedTabContentRegion().getImpl_traversalEngine().registeredNodes.isEmpty()) {
tps.getSelectedTabContentRegion().getImpl_traversalEngine().getTopLeftFocusableNode();
Parent traversableParent = null;
traversableParent = getFirstPopulatedInnerTraversalEngine(tps.getSelectedTabContentRegion().getChildren());
if (traversableParent != null) {
boolean nodeFound = false;
for (Node n : traversableParent.getImpl_traversalEngine().registeredNodes) {
if (!n.isFocused() && n.impl_isTreeVisible() && !n.isDisabled()) {
n.requestFocus();
nodeFound = true;
break;
}
}
if (nodeFound == false) {
super.callAction(name);
}
}
else {
super.callAction(name);
}
}
else {
/*
** if we have the focus owner then traverse from it, otherwise
** request focus in the top-left
*/
List children = tps.getSelectedTabContentRegion().getChildrenUnmodifiable();
Node focusNode = tps.getSelectedTabContentRegion().getScene().getFocusOwner();
if (focusNode != null && (isChildFocused(focusNode, children) == true)) {
focusNode.impl_traverse(Direction.PREVIOUS);
}
else {
focusLastChild(children);
}
}
} else {
super.callAction(name);
}
} else if (CTRL_TAB.equals(name) || CTRL_PAGE_DOWN.equals(name)) {
TabPane tp = getControl();
if (tp.getSelectionModel().getSelectedIndex() == (tp.getTabs().size() - 1)) {
tp.getSelectionModel().selectFirst();
} else {
selectNextTab();
}
tp.requestFocus();
} else if (CTRL_SHIFT_TAB.equals(name) || CTRL_PAGE_UP.equals(name)) {
TabPane tp = getControl();
if (tp.getSelectionModel().getSelectedIndex() == 0) {
tp.getSelectionModel().selectLast();
} else {
selectPreviousTab();
}
tp.requestFocus();
} else if (HOME.equals(name)) {
if (getControl().isFocused()) {
getControl().getSelectionModel().selectFirst();
}
} else if (END.equals(name)) {
if (getControl().isFocused()) {
getControl().getSelectionModel().selectLast();
}
} else {
super.callAction(name);
}
}
public static boolean isChildFocused(Node focusedNode, List children) {
boolean answer = false;
for(int i = 0; i < children.size(); i++) {
if (children.get(i) == focusedNode) {
answer = true;
break;
}
if (children.get(i) instanceof Parent) {
if (isChildFocused(focusedNode, ((Parent)children.get(i)).getChildrenUnmodifiable())) {
return true;
}
}
}
return answer;
}
public static boolean focusFirstChild(List children) {
for(int i = 0; i < children.size(); i++) {
Node n = children.get(i);
if (n.isFocusTraversable() && n.impl_isTreeVisible() && !n.isDisabled()) {
n.requestFocus();
return true;
}
else if (n instanceof Parent) {
if (focusFirstChild(((Parent)n).getChildrenUnmodifiable())) {
return true;
}
}
}
return false;
}
public static boolean focusLastChild(List children) {
for(int i = children.size()-1 ; i > -1; i--) {
Node n = children.get(i);
if (n.isFocusTraversable() && n.impl_isTreeVisible() && !n.isDisabled()) {
n.requestFocus();
return true;
}
else if (n instanceof Parent) {
if (focusFirstChild(((Parent)n).getChildrenUnmodifiable())) {
return true;
}
}
}
return false;
}
public static Parent getFirstPopulatedInnerTraversalEngine(ObservableList root) {
Parent firstPopulatedEngine = null;
for (Node node : root) {
if (node instanceof Parent) {
if (((Parent)node).getImpl_traversalEngine() != null && !((Parent)node).getImpl_traversalEngine().registeredNodes.isEmpty()) {
firstPopulatedEngine = (Parent)node;
break;
}
else {
firstPopulatedEngine = getFirstPopulatedInnerTraversalEngine(((Parent)node).getChildrenUnmodifiable());
if (firstPopulatedEngine != null) {
break;
}
}
}
}
return firstPopulatedEngine;
}
/***************************************************************************
* *
* Mouse event handling *
* *
**************************************************************************/
@Override public void mousePressed(MouseEvent e) {
super.mousePressed(e);
TabPane tp = getControl();
tp.requestFocus();
}
/**************************************************************************
* State and Functions *
*************************************************************************/
public TabPaneBehavior(TabPane tabPane) {
super(tabPane);
}
public void selectTab(Tab tab) {
getControl().getSelectionModel().select(tab);
}
public boolean canCloseTab(Tab tab) {
Event event = new Event(tab,tab,Tab.TAB_CLOSE_REQUEST_EVENT);
Event.fireEvent(tab, event);
return ! event.isConsumed();
}
public void closeTab(Tab tab) {
TabPane tabPane = getControl();
// only switch to another tab if the selected tab is the one we're closing
int index = tabPane.getTabs().indexOf(tab);
if (tab.isSelected()) {
if (index == 0) {
if (tabPane.getTabs().size() > 0) {
tabPane.getSelectionModel().selectFirst();
}
} else {
tabPane.getSelectionModel().selectPrevious();
}
}
if (index != -1) {
tabPane.getTabs().remove(index);
}
if (tab.getOnClosed() != null) {
Event.fireEvent(tab, new Event(Tab.CLOSED_EVENT));
}
}
// Find a tab after the currently selected that is not disabled.
public void selectNextTab() {
SingleSelectionModel selectionModel = getControl().getSelectionModel();
int current = selectionModel.getSelectedIndex();
int index = current;
while (index < getControl().getTabs().size()) {
selectionModel.selectNext();
index++;
if (!selectionModel.getSelectedItem().isDisable()) {
return;
}
}
selectionModel.select(current);
}
// Find a tab before the currently selected that is not disabled.
public void selectPreviousTab() {
SingleSelectionModel selectionModel = getControl().getSelectionModel();
int current = selectionModel.getSelectedIndex();
int index = current;
while (index > 0) {
selectionModel.selectPrevious();
index--;
if (!selectionModel.getSelectedItem().isDisable()) {
return;
}
}
selectionModel.select(current);
}
}
