1 /*
2 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javafx.scene.control;
27
28 import com.sun.javafx.scene.control.skin.Utils;
29 import javafx.collections.ListChangeListener;
30 import javafx.collections.ObservableList;
31 import javafx.event.Event;
32 import javafx.scene.Node;
33 import javafx.scene.Parent;
34 import javafx.scene.Scene;
35
36 import java.util.ArrayList;
37 import java.util.List;
38 import java.util.stream.Collectors;
39
40 class ControlUtils {
41 private ControlUtils() { }
42
43 public static void scrollToIndex(final Control control, int index) {
44 Utils.executeOnceWhenPropertyIsNonNull(control.skinProperty(), (Skin<?> skin) -> {
45 Event.fireEvent(control, new ScrollToEvent<>(control, control, ScrollToEvent.scrollToTopIndex(), index));
46 });
47 }
48
49 public static void scrollToColumn(final Control control, final TableColumnBase<?, ?> column) {
50 Utils.executeOnceWhenPropertyIsNonNull(control.skinProperty(), (Skin<?> skin) -> {
51 control.fireEvent(new ScrollToEvent<TableColumnBase<?, ?>>(control, control, ScrollToEvent.scrollToColumn(), column));
52 });
53 }
54
55 static void requestFocusOnControlOnlyIfCurrentFocusOwnerIsChild(Control c) {
56 Scene scene = c.getScene();
57 final Node focusOwner = scene == null ? null : scene.getFocusOwner();
58 if (focusOwner == null) {
59 c.requestFocus();
60 } else if (! c.equals(focusOwner)) {
61 Parent p = focusOwner.getParent();
62 while (p != null) {
63 if (c.equals(p)) {
64 c.requestFocus();
65 break;
66 }
67 p = p.getParent();
68 }
69 }
70 }
71
72 static <T> ListChangeListener.Change<T> buildClearAndSelectChange(
73 ObservableList<T> list, List<T> removed, int retainedRow) {
74 return new ListChangeListener.Change<T>(list) {
75 private final int[] EMPTY_PERM = new int[0];
76
77 private final int removedSize = removed.size();
78
79 private final List<T> firstRemovedRange;
80 private final List<T> secondRemovedRange;
81
82 private boolean invalid = true;
83 private boolean atFirstRange = true;
84
85 private int from = -1;
86
87 {
88 int midIndex = retainedRow >= removedSize ? removedSize :
89 retainedRow < 0 ? 0 :
|
1 /*
2 * Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javafx.scene.control;
27
28 import com.sun.javafx.scene.control.skin.Utils;
29 import javafx.collections.ListChangeListener;
30 import javafx.collections.ObservableList;
31 import javafx.event.Event;
32 import javafx.scene.Node;
33 import javafx.scene.Parent;
34 import javafx.scene.Scene;
35
36 import java.util.List;
37 import java.util.Optional;
38 import java.util.function.Function;
39 import java.util.stream.Collectors;
40
41 class ControlUtils {
42 private ControlUtils() { }
43
44 public static void scrollToIndex(final Control control, int index) {
45 Utils.executeOnceWhenPropertyIsNonNull(control.skinProperty(), (Skin<?> skin) -> {
46 Event.fireEvent(control, new ScrollToEvent<>(control, control, ScrollToEvent.scrollToTopIndex(), index));
47 });
48 }
49
50 public static void scrollToColumn(final Control control, final TableColumnBase<?, ?> column) {
51 Utils.executeOnceWhenPropertyIsNonNull(control.skinProperty(), (Skin<?> skin) -> {
52 control.fireEvent(new ScrollToEvent<TableColumnBase<?, ?>>(control, control, ScrollToEvent.scrollToColumn(), column));
53 });
54 }
55
56 static void requestFocusOnControlOnlyIfCurrentFocusOwnerIsChild(Control c) {
57 runOnFocusedNodeIfChildOf(c, matchingNode -> {
58 matchingNode.requestFocus();
59 return null;
60 });
61 }
62
63 static boolean isFocusOnNodeOrAnyChild(final Node n) {
64 return runOnFocusedNodeIfChildOf(n, matchingNode -> true).orElse(false);
65 }
66
67 static <R> Optional<R> runOnFocusedNodeIfChildOf(final Node n, Function<Node, R> f) {
68 if (n == null) return Optional.empty();
69 if (n.isFocused()) {
70 return Optional.ofNullable(f.apply(n));
71 }
72
73 Scene scene = n.getScene();
74 final Node focusOwner = scene == null ? null : scene.getFocusOwner();
75
76 if (focusOwner == null) {
77 return Optional.empty();
78 } else if (n.equals(focusOwner)) {
79 return Optional.ofNullable(f.apply(n));
80 } else {
81 Parent p = focusOwner.getParent();
82 while (p != null) {
83 if (n.equals(p)) {
84 return Optional.ofNullable(f.apply(p));
85 }
86 p = p.getParent();
87 }
88 }
89 return Optional.empty();
90 }
91
92 static <T> ListChangeListener.Change<T> buildClearAndSelectChange(
93 ObservableList<T> list, List<T> removed, int retainedRow) {
94 return new ListChangeListener.Change<T>(list) {
95 private final int[] EMPTY_PERM = new int[0];
96
97 private final int removedSize = removed.size();
98
99 private final List<T> firstRemovedRange;
100 private final List<T> secondRemovedRange;
101
102 private boolean invalid = true;
103 private boolean atFirstRange = true;
104
105 private int from = -1;
106
107 {
108 int midIndex = retainedRow >= removedSize ? removedSize :
109 retainedRow < 0 ? 0 :
|