1 /* 2 * Copyright (c) 2010, 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 javafx.geometry.Orientation; 29 import javafx.scene.control.ListCell; 30 import javafx.scene.control.ListView; 31 32 import com.sun.javafx.scene.control.behavior.ListCellBehavior; 33 34 public class ListCellSkin<T> extends CellSkinBase<ListCell<T>, ListCellBehavior<T>> { 35 36 private double fixedCellSize; 37 private boolean fixedCellSizeEnabled; 38 39 public ListCellSkin(ListCell<T> control) { 40 super(control, new ListCellBehavior<T>(control)); 41 42 this.fixedCellSize = control.getListView().getFixedCellSize(); 43 this.fixedCellSizeEnabled = fixedCellSize > 0; 44 45 registerChangeListener(control.getListView().fixedCellSizeProperty(), "FIXED_CELL_SIZE"); 46 } 47 48 @Override protected void handleControlPropertyChanged(String p) { 49 super.handleControlPropertyChanged(p); 50 if ("FIXED_CELL_SIZE".equals(p)) { 51 this.fixedCellSize = getSkinnable().getListView().getFixedCellSize(); 52 this.fixedCellSizeEnabled = fixedCellSize > 0; 53 } 54 } 55 56 @Override protected double computePrefWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) { 57 double pref = super.computePrefWidth(height, topInset, rightInset, bottomInset, leftInset); 58 ListView<T> listView = getSkinnable().getListView(); 59 return listView == null ? 0 : 60 listView.getOrientation() == Orientation.VERTICAL ? pref : Math.max(pref, getCellSize()); 61 } 62 63 @Override protected double computePrefHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset) { 64 if (fixedCellSizeEnabled) { 65 return fixedCellSize; 66 } 67 68 // Added the comparison between the default cell size and the requested 69 // cell size to prevent the issue identified in RT-19873. 70 final double cellSize = getCellSize(); 71 final double prefHeight = cellSize == DEFAULT_CELL_SIZE ? super.computePrefHeight(width, topInset, rightInset, bottomInset, leftInset) : cellSize; 72 return prefHeight; 73 } 74 75 @Override protected double computeMinHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset) { 76 if (fixedCellSizeEnabled) { 77 return fixedCellSize; 78 } 79 80 return super.computeMinHeight(width, topInset, rightInset, bottomInset, leftInset); 81 } 82 83 @Override protected double computeMaxHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset) { 84 if (fixedCellSizeEnabled) { 85 return fixedCellSize; 86 } 87 88 return super.computeMaxHeight(width, topInset, rightInset, bottomInset, leftInset); 89 } 90 }