1 /*
2 * Copyright (c) 2011, 2014, 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 com.sun.javafx.scene.control.skin;
27
28 import com.sun.javafx.scene.control.behavior.CellBehaviorBase;
29 import javafx.beans.InvalidationListener;
30 import javafx.beans.WeakInvalidationListener;
31 import javafx.beans.property.BooleanProperty;
32 import javafx.beans.property.ReadOnlyDoubleProperty;
33 import javafx.scene.control.IndexedCell;
34 import javafx.scene.shape.Rectangle;
35
36 public abstract class TableCellSkinBase<C extends IndexedCell, B extends CellBehaviorBase<C>> extends CellSkinBase<C,B> {
37
38 /***************************************************************************
39 * *
40 * Static Fields *
41 * *
42 **************************************************************************/
43
44 // This property is set on the cell when we want to know its actual
45 // preferred width, not the width of the associated TableColumn.
46 // This is primarily used in NestedTableColumnHeader such that user double
47 // clicks result in the column being resized to fit the widest content in
48 // the column
49 static final String DEFER_TO_PARENT_PREF_WIDTH = "deferToParentPrefWidth";
50
51
52
53 /***************************************************************************
54 * *
55 * Private Fields *
56 * *
57 **************************************************************************/
58
59 // Equivalent to tableColumn.widthProperty()
60 protected abstract ReadOnlyDoubleProperty columnWidthProperty();
61
62 // Equivalent to tableColumn.visibleProperty()
63 protected abstract BooleanProperty columnVisibleProperty();
64
65 boolean isDeferToParentForPrefWidth = false;
66
67
68
69 /***************************************************************************
70 * *
71 * Constructors *
72 * *
73 **************************************************************************/
74
75 public TableCellSkinBase(final C control, final B behavior) {
76 super(control, behavior);
77
78 // init(control) should not be called here - it should be called by the
79 // subclass after initialising itself. This is to prevent NPEs (for
80 // example, getVisibleLeafColumns() throws a NPE as the control itself
81 // is not yet set in subclasses).
82 }
83
84 protected void init(C control) {
85 // RT-22038
86 Rectangle clip = new Rectangle();
87 clip.widthProperty().bind(control.widthProperty());
88 clip.heightProperty().bind(control.heightProperty());
89 getSkinnable().setClip(clip);
90 // --- end of RT-22038
91
92 ReadOnlyDoubleProperty columnWidthProperty = columnWidthProperty();
93 if (columnWidthProperty != null) {
94 columnWidthProperty.addListener(weakColumnWidthListener);
95 }
96
97 registerChangeListener(control.visibleProperty(), "VISIBLE");
98
99 if (control.getProperties().containsKey(DEFER_TO_PARENT_PREF_WIDTH)) {
100 isDeferToParentForPrefWidth = true;
101 }
102 }
103
104
105
106 /***************************************************************************
107 * *
108 * Listeners *
109 * *
110 **************************************************************************/
111
112 private InvalidationListener columnWidthListener = valueModel -> {
113 getSkinnable().requestLayout();
114 };
115
116 private WeakInvalidationListener weakColumnWidthListener =
117 new WeakInvalidationListener(columnWidthListener);
118
119
120
121 /***************************************************************************
122 * *
123 * Public Methods *
124 * *
125 **************************************************************************/
126
127 @Override protected void handleControlPropertyChanged(String p) {
128 super.handleControlPropertyChanged(p);
129 if ("VISIBLE".equals(p)) {
130 getSkinnable().setVisible(columnVisibleProperty().get());
131 }
132 }
133
134 @Override public void dispose() {
135 ReadOnlyDoubleProperty columnWidthProperty = columnWidthProperty();
136 if (columnWidthProperty != null) {
137 columnWidthProperty.removeListener(weakColumnWidthListener);
138 }
139
140 super.dispose();
141 }
142
143 @Override protected void layoutChildren(final double x, final double y,
144 final double w, final double h) {
145 // fit the cell within this space
146 // FIXME the subtraction of bottom padding isn't right here - but it
147 // results in better visuals, so I'm leaving it in place for now.
148 layoutLabelInArea(x, y, w, h - getSkinnable().getPadding().getBottom());
149 }
150
151 @Override protected double computePrefWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) {
152 if (isDeferToParentForPrefWidth) {
153 return super.computePrefWidth(height, topInset, rightInset, bottomInset, leftInset);
154 }
155 return columnWidthProperty().get();
156 }
157 }