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This is a backport of OpenJFX 8 to run on Java 7.
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/*
* Copyright (c) 2010, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.scene.control.behavior;
import static javafx.scene.input.KeyCode.*;
import java.util.ArrayList;
import java.util.List;
import javafx.scene.control.FocusModel;
import javafx.scene.control.MultipleSelectionModel;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeView;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import com.sun.javafx.PlatformUtil;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.beans.value.WeakChangeListener;
import javafx.collections.ListChangeListener;
import javafx.collections.WeakListChangeListener;
import javafx.scene.input.KeyCode;
import javafx.util.Callback;
public class TreeViewBehavior extends BehaviorBase> {
/**************************************************************************
* Setup KeyBindings *
*************************************************************************/
protected static final List TREE_VIEW_BINDINGS = new ArrayList();
static {
TREE_VIEW_BINDINGS.add(new KeyBinding(HOME, "SelectFirstRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(END, "SelectLastRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(HOME, "SelectAllToFirstRow").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(END, "SelectAllToLastRow").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(PAGE_UP, "SelectAllPageUp").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(PAGE_DOWN, "SelectAllPageDown").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(SPACE, "SelectAllToFocus").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(HOME, "FocusFirstRow").shortcut());
TREE_VIEW_BINDINGS.add(new KeyBinding(END, "FocusLastRow").shortcut());
TREE_VIEW_BINDINGS.add(new KeyBinding(PAGE_UP, "ScrollUp"));
TREE_VIEW_BINDINGS.add(new KeyBinding(PAGE_DOWN, "ScrollDown"));
TREE_VIEW_BINDINGS.add(new KeyBinding(A, "SelectAll").shortcut());
TREE_VIEW_BINDINGS.add(new KeyBinding(SPACE, "toggleFocusOwnerSelection").shortcut());
TREE_VIEW_BINDINGS.add(new KeyBinding(PAGE_UP, "FocusPageUp").shortcut());
TREE_VIEW_BINDINGS.add(new KeyBinding(PAGE_DOWN, "FocusPageDown").shortcut());
TREE_VIEW_BINDINGS.add(new KeyBinding(UP, "FocusPreviousRow").shortcut());
TREE_VIEW_BINDINGS.add(new KeyBinding(DOWN, "FocusNextRow").shortcut());
TREE_VIEW_BINDINGS.add(new KeyBinding(UP, "DiscontinuousSelectPreviousRow").shortcut().shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(DOWN, "DiscontinuousSelectNextRow").shortcut().shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(PAGE_UP, "DiscontinuousSelectPageUp").shortcut().shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(PAGE_DOWN, "DiscontinuousSelectPageDown").shortcut().shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(HOME, "DiscontinuousSelectAllToFirstRow").shortcut().shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(END, "DiscontinuousSelectAllToLastRow").shortcut().shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(LEFT, "CollapseRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(KP_LEFT, "CollapseRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(RIGHT, "ExpandRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(KP_RIGHT, "ExpandRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(MULTIPLY, "ExpandAll"));
TREE_VIEW_BINDINGS.add(new KeyBinding(ADD, "ExpandRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(SUBTRACT, "CollapseRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(UP, "SelectPreviousRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(KP_UP, "SelectPreviousRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(DOWN, "SelectNextRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(KP_DOWN, "SelectNextRow"));
TREE_VIEW_BINDINGS.add(new KeyBinding(UP, "AlsoSelectPreviousRow").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(KP_UP, "AlsoSelectPreviousRow").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(DOWN, "AlsoSelectNextRow").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(KP_DOWN, "AlsoSelectNextRow").shift());
TREE_VIEW_BINDINGS.add(new KeyBinding(ENTER, "Edit"));
TREE_VIEW_BINDINGS.add(new KeyBinding(F2, "Edit"));
TREE_VIEW_BINDINGS.add(new KeyBinding(ESCAPE, "CancelEdit"));
}
@Override protected void callAction(String name) {
if ("SelectPreviousRow".equals(name)) selectPreviousRow();
else if ("SelectNextRow".equals(name)) selectNextRow();
else if ("SelectFirstRow".equals(name)) selectFirstRow();
else if ("SelectLastRow".equals(name)) selectLastRow();
else if ("SelectAllPageUp".equals(name)) selectAllPageUp();
else if ("SelectAllPageDown".equals(name)) selectAllPageDown();
else if ("SelectAllToFirstRow".equals(name)) selectAllToFirstRow();
else if ("SelectAllToLastRow".equals(name)) selectAllToLastRow();
else if ("AlsoSelectNextRow".equals(name)) alsoSelectNextRow();
else if ("AlsoSelectPreviousRow".equals(name)) alsoSelectPreviousRow();
else if ("ClearSelection".equals(name)) clearSelection();
else if("SelectAll".equals(name)) selectAll();
else if ("ScrollUp".equals(name)) scrollUp();
else if ("ScrollDown".equals(name)) scrollDown();
else if ("ExpandRow".equals(name)) expandRow();
else if ("CollapseRow".equals(name)) collapseRow();
else if ("ExpandAll".equals(name)) expandAll();
// else if ("ExpandOrCollapseRow".equals(name)) expandOrCollapseRow();
else if ("Edit".equals(name)) edit();
else if ("CancelEdit".equals(name)) cancelEdit();
else if ("FocusFirstRow".equals(name)) focusFirstRow();
else if ("FocusLastRow".equals(name)) focusLastRow();
else if ("toggleFocusOwnerSelection".equals(name)) toggleFocusOwnerSelection();
else if ("SelectAllToFocus".equals(name)) selectAllToFocus();
else if ("FocusPageUp".equals(name)) focusPageUp();
else if ("FocusPageDown".equals(name)) focusPageDown();
else if ("FocusPreviousRow".equals(name)) focusPreviousRow();
else if ("FocusNextRow".equals(name)) focusNextRow();
else if ("DiscontinuousSelectNextRow".equals(name)) discontinuousSelectNextRow();
else if ("DiscontinuousSelectPreviousRow".equals(name)) discontinuousSelectPreviousRow();
else if ("DiscontinuousSelectPageUp".equals(name)) discontinuousSelectPageUp();
else if ("DiscontinuousSelectPageDown".equals(name)) discontinuousSelectPageDown();
else if ("DiscontinuousSelectAllToLastRow".equals(name)) discontinuousSelectAllToLastRow();
else if ("DiscontinuousSelectAllToFirstRow".equals(name)) discontinuousSelectAllToFirstRow();
else super.callAction(name);
}
@Override protected List createKeyBindings() {
return TREE_VIEW_BINDINGS;
}
@Override protected void callActionForEvent(KeyEvent e) {
// RT-12751: we want to keep an eye on the user holding down the shift key,
// so that we know when they enter/leave multiple selection mode. This
// changes what happens when certain key combinations are pressed.
isShiftDown = e.getEventType() == KeyEvent.KEY_PRESSED && e.isShiftDown();
isShortcutDown = e.getEventType() == KeyEvent.KEY_PRESSED && e.isShortcutDown();
super.callActionForEvent(e);
}
/**************************************************************************
* State and Functions *
*************************************************************************/
private boolean isShiftDown = false;
private boolean isShortcutDown = false;
// Support for RT-13826:
// set when focus is moved by keyboard to allow for proper selection positions
// private int selectPos = -1;
private Callback onScrollPageUp;
public void setOnScrollPageUp(Callback c) { onScrollPageUp = c; }
private Callback onScrollPageDown;
public void setOnScrollPageDown(Callback c) { onScrollPageDown = c; }
private Runnable onSelectPreviousRow;
public void setOnSelectPreviousRow(Runnable r) { onSelectPreviousRow = r; }
private Runnable onSelectNextRow;
public void setOnSelectNextRow(Runnable r) { onSelectNextRow = r; }
private Runnable onMoveToFirstCell;
public void setOnMoveToFirstCell(Runnable r) { onMoveToFirstCell = r; }
private Runnable onMoveToLastCell;
public void setOnMoveToLastCell(Runnable r) { onMoveToLastCell = r; }
private Runnable onFocusPreviousRow;
public void setOnFocusPreviousRow(Runnable r) { onFocusPreviousRow = r; }
private Runnable onFocusNextRow;
public void setOnFocusNextRow(Runnable r) { onFocusNextRow = r; }
private boolean selectionChanging = false;
private final ListChangeListener selectedIndicesListener = new ListChangeListener() {
@Override public void onChanged(ListChangeListener.Change c) {
while (c.next()) {
MultipleSelectionModel> sm = getControl().getSelectionModel();
// there are no selected items, so lets clear out the anchor
if (! selectionChanging) {
if (sm.isEmpty()) {
setAnchor(-1);
} else if (! sm.isSelected(getAnchor())) {
setAnchor(-1);
}
}
int addedSize = c.getAddedSize();
if (addedSize > 0 && ! hasAnchor()) {
List addedSubList = c.getAddedSubList();
int index = addedSubList.get(addedSize - 1);
setAnchor(index);
}
}
}
};
private final ChangeListener>> selectionModelListener =
new ChangeListener>>() {
@Override public void changed(ObservableValue>> observable,
MultipleSelectionModel> oldValue,
MultipleSelectionModel> newValue) {
if (oldValue != null) {
oldValue.getSelectedIndices().removeListener(weakSelectedIndicesListener);
}
if (newValue != null) {
newValue.getSelectedIndices().addListener(weakSelectedIndicesListener);
}
}
};
private final WeakListChangeListener weakSelectedIndicesListener =
new WeakListChangeListener(selectedIndicesListener);
private final WeakChangeListener>> weakSelectionModelListener =
new WeakChangeListener>>(selectionModelListener);
public TreeViewBehavior(TreeView control) {
super(control);
// Fix for RT-16565
getControl().selectionModelProperty().addListener(weakSelectionModelListener);
if (control.getSelectionModel() != null) {
control.getSelectionModel().getSelectedIndices().addListener(weakSelectedIndicesListener);
}
}
public void dispose() {
TreeCellBehavior.removeAnchor(getControl());
}
private void setAnchor(int anchor) {
TreeCellBehavior.setAnchor(getControl(), anchor);
}
private int getAnchor() {
return TreeCellBehavior.getAnchor(getControl());
}
private boolean hasAnchor() {
return TreeCellBehavior.hasAnchor(getControl());
}
@Override public void mousePressed(MouseEvent e) {
super.mousePressed(e);
if (! e.isShiftDown()) {
int index = getControl().getSelectionModel().getSelectedIndex();
setAnchor(index);
}
if (! getControl().isFocused() && getControl().isFocusTraversable()) {
getControl().requestFocus();
}
}
private void clearSelection() {
getControl().getSelectionModel().clearSelection();
//select(null);
}
private void scrollUp() {
int newSelectedIndex = -1;
if (onScrollPageUp != null) {
newSelectedIndex = onScrollPageUp.call(getAnchor());
}
if (newSelectedIndex == -1) return;
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
sm.clearAndSelect(newSelectedIndex);
}
private void scrollDown() {
int newSelectedIndex = -1;
if (onScrollPageDown != null) {
newSelectedIndex = onScrollPageDown.call(getAnchor());
}
if (newSelectedIndex == -1) return;
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
sm.clearAndSelect(newSelectedIndex);
}
private void focusFirstRow() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
fm.focus(0);
if (onMoveToFirstCell != null) onMoveToFirstCell.run();
}
private void focusLastRow() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
fm.focus(getControl().getExpandedItemCount() - 1);
if (onMoveToLastCell != null) onMoveToLastCell.run();
}
private void focusPreviousRow() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
fm.focusPrevious();
if (! isShortcutDown || getAnchor() == -1) {
setAnchor(fm.getFocusedIndex());
}
if (onFocusPreviousRow != null) onFocusPreviousRow.run();
}
private void focusNextRow() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
fm.focusNext();
if (! isShortcutDown || getAnchor() == -1) {
setAnchor(fm.getFocusedIndex());
}
if (onFocusNextRow != null) onFocusNextRow.run();
}
private void focusPageUp() {
int newFocusIndex = onScrollPageUp.call(getAnchor());
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
fm.focus(newFocusIndex);
}
private void focusPageDown() {
int newFocusIndex = onScrollPageDown.call(getAnchor());
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
fm.focus(newFocusIndex);
}
private void alsoSelectPreviousRow() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
// final int focusIndex = fm.getFocusedIndex();
if (isShiftDown && getAnchor() != -1) {
int newRow = fm.getFocusedIndex() - 1;
int anchor = getAnchor();
if (! hasAnchor()) {
setAnchor(fm.getFocusedIndex());
}
clearSelectionOutsideRange(anchor, newRow);
if (anchor > newRow) {
sm.selectRange(anchor, newRow - 1);
} else {
sm.selectRange(anchor, newRow + 1);
}
} else {
sm.selectPrevious();
}
onSelectPreviousRow.run();
}
private void alsoSelectNextRow() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
if (isShiftDown && getAnchor() != -1) {
int newRow = fm.getFocusedIndex() + 1;
int anchor = getAnchor();
if (! hasAnchor()) {
setAnchor(fm.getFocusedIndex());
}
clearSelectionOutsideRange(anchor, newRow);
if (anchor > newRow) {
sm.selectRange(anchor, newRow - 1);
} else {
sm.selectRange(anchor, newRow + 1);
}
} else {
sm.selectNext();
}
onSelectNextRow.run();
}
private void clearSelectionOutsideRange(int start, int end) {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
int min = Math.min(start, end);
int max = Math.max(start, end);
List indices = new ArrayList(sm.getSelectedIndices());
selectionChanging = true;
for (int i = 0; i < indices.size(); i++) {
int index = indices.get(i);
if (index < min || index >= max) {
sm.clearSelection(index);
}
}
selectionChanging = false;
}
private void selectPreviousRow() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int focusIndex = fm.getFocusedIndex();
if (focusIndex <= 0) {
return;
}
setAnchor(focusIndex - 1);
getControl().getSelectionModel().clearAndSelect(focusIndex - 1);
onSelectPreviousRow.run();
}
private void selectNextRow() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int focusIndex = fm.getFocusedIndex();
if (focusIndex == getControl().getExpandedItemCount() - 1) {
return;
}
setAnchor(focusIndex + 1);
getControl().getSelectionModel().clearAndSelect(focusIndex + 1);
onSelectNextRow.run();
}
private void selectFirstRow() {
if (getControl().getExpandedItemCount() > 0) {
getControl().getSelectionModel().clearAndSelect(0);
if (onMoveToFirstCell != null) onMoveToFirstCell.run();
}
}
private void selectLastRow() {
getControl().getSelectionModel().clearAndSelect(getControl().getExpandedItemCount() - 1);
onMoveToLastCell.run();
}
private void selectAllToFirstRow() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
int leadIndex = sm.getSelectedIndex();
if (isShiftDown) {
leadIndex = getAnchor() == -1 ? sm.getSelectedIndex() : getAnchor();
}
sm.clearSelection();
sm.selectRange(0, leadIndex + 1);
if (isShiftDown) {
setAnchor(leadIndex);
}
if (onMoveToFirstCell != null) onMoveToFirstCell.run();
}
private void selectAllToLastRow() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
int leadIndex = sm.getSelectedIndex();
if (isShiftDown) {
leadIndex = getAnchor() == -1 ? sm.getSelectedIndex() : getAnchor();
}
sm.clearSelection();
sm.selectRange(leadIndex, getControl().getExpandedItemCount() - 1);
if (isShiftDown) {
setAnchor(leadIndex);
}
if (onMoveToLastCell != null) onMoveToLastCell.run();
}
private void selectAll() {
getControl().getSelectionModel().selectAll();
}
private void selectAllPageUp() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int leadIndex = fm.getFocusedIndex();
if (isShiftDown) {
leadIndex = getAnchor() == -1 ? leadIndex : getAnchor();
setAnchor(leadIndex);
}
int leadSelectedIndex = onScrollPageUp.call(getAnchor());
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
selectionChanging = true;
sm.clearSelection();
sm.selectRange(leadSelectedIndex, leadIndex + 1);
selectionChanging = false;
}
private void selectAllPageDown() {
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int leadIndex = fm.getFocusedIndex();
if (isShiftDown) {
leadIndex = getAnchor() == -1 ? leadIndex : getAnchor();
setAnchor(leadIndex);
}
int leadSelectedIndex = onScrollPageDown.call(getAnchor());
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
selectionChanging = true;
sm.clearSelection();
sm.selectRange(leadIndex, leadSelectedIndex + 1);
selectionChanging = false;
}
private void selectAllToFocus() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int focusIndex = fm.getFocusedIndex();
int anchor = getAnchor();
sm.clearSelection();
int startPos = anchor;
int endPos = anchor > focusIndex ? focusIndex - 1 : focusIndex + 1;
sm.selectRange(startPos, endPos);
setAnchor(anchor);
}
private void expandRow() {
Callback, Integer> getIndex = new Callback, Integer>() {
@Override public Integer call(TreeItem p) {
return getControl().getRow(p);
}
};
TreeViewBehavior.expandRow(getControl().getSelectionModel(), getIndex);
}
private void expandAll() {
TreeViewBehavior.expandAll(getControl().getRoot());
}
private void collapseRow() {
TreeView control = getControl();
TreeViewBehavior.collapseRow(control.getSelectionModel(), control.getRoot(), control.isShowRoot());
}
static void expandRow(final MultipleSelectionModel> sm, Callback, Integer> getIndex) {
if (sm == null) return;
TreeItem treeItem = sm.getSelectedItem();
if (treeItem == null || treeItem.isLeaf()) return;
if (treeItem.isExpanded()) {
// move selection to the first child (RT-17978)
List> children = treeItem.getChildren();
if (! children.isEmpty()) {
sm.clearAndSelect(getIndex.call(children.get(0)));
}
} else {
treeItem.setExpanded(true);
}
}
static void expandAll(final TreeItem root) {
if (root == null) return;
root.setExpanded(true);
expandChildren(root);
}
private static void expandChildren(TreeItem node) {
if (node == null) return;
List children = node.getChildren();
if (children == null) return;
for (int i = 0; i < children.size(); i++) {
TreeItem child = children.get(i);
if (child == null || child.isLeaf()) continue;
child.setExpanded(true);
expandChildren(child);
}
}
static void collapseRow(final MultipleSelectionModel> sm, final TreeItem root, final boolean isShowRoot) {
if (sm == null) return;
TreeItem selectedItem = sm.getSelectedItem();
if (selectedItem == null) return;
if (root == null) return;
// Fix for RT-17233 where we could hide all items in a tree with no visible
// root by pressing the left-arrow key too many times
if (! isShowRoot && ! selectedItem.isExpanded() && root.equals(selectedItem.getParent())) {
return;
}
// Fix for RT-17833 where the selection highlight could disappear unexpectedly from
// the root node in certain circumstances
if (root.equals(selectedItem) && (! root.isExpanded() || root.getChildren().isEmpty())) {
return;
}
// If we're on a leaf or the branch is not expanded, move up to the parent,
// otherwise collapse the branch.
if (selectedItem.isLeaf() || ! selectedItem.isExpanded()) {
sm.clearSelection();
sm.select(selectedItem.getParent());
} else {
selectedItem.setExpanded(false);
}
}
private void cancelEdit() {
getControl().edit(null);
}
private void edit() {
TreeItem treeItem = getControl().getSelectionModel().getSelectedItem();
if (treeItem == null) return;
getControl().edit(treeItem);
}
private void toggleFocusOwnerSelection() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int focusedIndex = fm.getFocusedIndex();
if (sm.isSelected(focusedIndex)) {
sm.clearSelection(focusedIndex);
fm.focus(focusedIndex);
} else {
sm.select(focusedIndex);
}
setAnchor(focusedIndex);
}
/**************************************************************************
* Discontinuous Selection *
*************************************************************************/
private void discontinuousSelectPreviousRow() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int index = fm.getFocusedIndex() - 1;
if (index < 0) return;
sm.select(index);
}
private void discontinuousSelectNextRow() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int index = fm.getFocusedIndex() + 1;
sm.select(index);
}
private void discontinuousSelectPageUp() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int leadIndex = fm.getFocusedIndex();
int leadSelectedIndex = onScrollPageUp.call(getAnchor());
sm.selectRange(leadSelectedIndex, leadIndex + 1);
}
private void discontinuousSelectPageDown() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int leadIndex = fm.getFocusedIndex();
int leadSelectedIndex = onScrollPageDown.call(getAnchor());
sm.selectRange(leadIndex, leadSelectedIndex + 1);
}
private void discontinuousSelectAllToFirstRow() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int index = fm.getFocusedIndex();
sm.selectRange(0, index);
fm.focus(0);
if (onMoveToFirstCell != null) onMoveToFirstCell.run();
}
private void discontinuousSelectAllToLastRow() {
MultipleSelectionModel sm = getControl().getSelectionModel();
if (sm == null) return;
FocusModel fm = getControl().getFocusModel();
if (fm == null) return;
int index = fm.getFocusedIndex() + 1;
sm.selectRange(index, getControl().getExpandedItemCount());
if (onMoveToLastCell != null) onMoveToLastCell.run();
}
}