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/*
* Copyright (c) 2010, 2024, 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 javafx.scene.control.skin;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javafx.scene.control.Cell;
import javafx.css.StyleableDoubleProperty;
import javafx.css.CssMetaData;
import javafx.css.StyleOrigin;
import javafx.css.converter.SizeConverter;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.ReadOnlyDoubleProperty;
import javafx.css.Styleable;
import javafx.css.StyleableProperty;
import javafx.scene.control.Control;
import javafx.scene.control.SkinBase;
/**
* Default skin implementation for the {@link Cell} control, and subclasses such
* as {@link javafx.scene.control.ListCell}, {@link javafx.scene.control.TreeCell},
* etc.
*
* @param the type of the cell control
* @see Cell
* @since 9
*/
public class CellSkinBase extends LabeledSkinBase {
/* *************************************************************************
* *
* Constructors *
* *
**************************************************************************/
/**
* Creates a new CellSkinBase instance, installing the necessary child
* nodes into the Control {@link Control#getChildren() children} list, as
* well as the necessary input mappings for handling key, mouse, etc events.
*
* @param control The control that this skin should be installed onto.
*/
public CellSkinBase(final C control) {
super (control);
/**
* The Cell does not typically want to block mouse events from going down
* to the virtualized controls holding the cell. For example mouse clicks
* on cells should also pass down to the ListView holding the cells.
*/
consumeMouseEvents(false);
}
/* *************************************************************************
* *
* Properties *
* *
**************************************************************************/
/**
* The default cell size. For vertical ListView or a TreeView or TableView
* this is the height, for a horizontal ListView this is the width. This
* is settable from CSS
*/
private DoubleProperty cellSize;
public final double getCellSize() {
return cellSize == null ? DEFAULT_CELL_SIZE : cellSize.get();
}
public final ReadOnlyDoubleProperty cellSizeProperty() {
return cellSizePropertyImpl();
}
private DoubleProperty cellSizePropertyImpl() {
if (cellSize == null) {
cellSize = new StyleableDoubleProperty(DEFAULT_CELL_SIZE) {
@Override
public void applyStyle(StyleOrigin origin, Number value) {
double size = value == null ? DEFAULT_CELL_SIZE : value.doubleValue();
// guard against a 0 or negative size
super.applyStyle(origin, size <= 0 ? DEFAULT_CELL_SIZE : size);
}
@Override public void set(double value) {
// // Commented this out due to RT-19794, because otherwise
// // cellSizeSet would be false when the default caspian.css
// // cell size was set. This would lead to
// // ListCellSkin.computePrefHeight computing the pref height
// // of the cell (which is about 22px), rather than use the
// // value provided by caspian.css (which is 24px).
// // cellSizeSet = true;//value != DEFAULT_CELL_SIZE;
super.set(value);
getSkinnable().requestLayout();
}
@Override public Object getBean() {
return CellSkinBase.this;
}
@Override public String getName() {
return "cellSize";
}
@Override public CssMetaData, Number> getCssMetaData() {
return StyleableProperties.CELL_SIZE;
}
};
}
return cellSize;
}
/* *************************************************************************
* *
* Stylesheet Handling *
* *
**************************************************************************/
static final double DEFAULT_CELL_SIZE = 24.0;
/*
* Super-lazy instantiation pattern from Bill Pugh.
*/
private static class StyleableProperties {
private final static CssMetaData,Number> CELL_SIZE =
new CssMetaData<>("-fx-cell-size",
SizeConverter.getInstance(), DEFAULT_CELL_SIZE) {
@Override
public boolean isSettable(Cell n) {
final CellSkinBase skin = (CellSkinBase) n.getSkin();
return skin.cellSize == null || !skin.cellSize.isBound();
}
@Override
public StyleableProperty getStyleableProperty(Cell n) {
final CellSkinBase skin = (CellSkinBase) n.getSkin();
return (StyleableProperty)skin.cellSizePropertyImpl();
}
};
private static final List> STYLEABLES;
static {
final List> styleables =
new ArrayList<>(SkinBase.getClassCssMetaData());
styleables.add(CELL_SIZE);
STYLEABLES = Collections.unmodifiableList(styleables);
}
}
/**
* Returns the CssMetaData associated with this class, which may include the
* CssMetaData of its superclasses.
* @return the CssMetaData associated with this class, which may include the
* CssMetaData of its superclasses
*/
public static List> getClassCssMetaData() {
return StyleableProperties.STYLEABLES;
}
/** {@inheritDoc} */
@Override public List> getCssMetaData() {
return getClassCssMetaData();
}
}
