| /* |
| * Copyright (c) 2007, 2016, 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. |
| * |
| * 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.swingset3.demos; |
| |
| import java.awt.*; |
| import javax.swing.*; |
| |
| /** |
| * JGridPanel |
| * |
| * @author Pavel Porvatov |
| */ |
| public class JGridPanel extends JPanel { |
| |
| public static final int DEFAULT_GAP = 5; |
| |
| public enum Layout { |
| FIRST, |
| CENTER, |
| LAST, |
| FILL |
| } |
| |
| private enum ComponentType { |
| NO_RESIZABLE, |
| HORIZONTAL_FILL, |
| FULL |
| } |
| |
| private final int cols; |
| |
| private int bigCol = -1; |
| |
| private int bigRow = -1; |
| |
| private int vGap = -1; |
| |
| private int hGap = -1; |
| |
| public JGridPanel(int cols) { |
| this(cols, -1, -1); |
| } |
| |
| public JGridPanel(int cols, int bigCol) { |
| this(cols, bigCol, -1); |
| } |
| |
| public JGridPanel(int cols, int bigCol, int bigRow) { |
| super(new GridBagLayout()); |
| |
| assert cols > 0; |
| assert bigCol >= -1 && bigCol < cols; |
| assert bigRow >= -1; |
| |
| this.cols = cols; |
| this.bigCol = bigCol; |
| this.bigRow = bigRow; |
| } |
| |
| public void setVGap(int vGap) { |
| this.vGap = vGap; |
| } |
| |
| public void setHGap(int hGap) { |
| this.hGap = hGap; |
| } |
| |
| public JGridPanel cell() { |
| return cell(null, getHLayout(null), getVLayout(null), null); |
| } |
| |
| public JGridPanel cell(Component component) { |
| return cell(component, getHLayout(component), getVLayout(component), null); |
| } |
| |
| public JGridPanel cell(Component component, Layout hLayout) { |
| return cell(component, hLayout, getVLayout(component), null); |
| } |
| |
| public JGridPanel cell(Component component, Layout hLayout, Layout vLayout) { |
| return cell(component, hLayout, vLayout, null); |
| } |
| |
| public JGridPanel cell(Component component, Insets insets) { |
| assert insets != null; |
| |
| return cell(component, getHLayout(component), getVLayout(component), insets); |
| } |
| |
| private JGridPanel cell(Component component, Layout hLayout, Layout vLayout, Insets insets) { |
| int componentCount = getComponentCount(); |
| int x = componentCount % cols; |
| int y = componentCount / cols; |
| |
| int weightx = x == bigCol || (bigCol < 0 && hLayout == Layout.FILL) ? 1 : 0; |
| int weighty = y == bigRow || (bigRow < 0 && vLayout == Layout.FILL) ? 1 : 0; |
| |
| if (insets == null) { |
| int topGap = y == 0 ? 0 : vGap; |
| int leftGap = x == 0 ? 0 : hGap; |
| |
| insets = new Insets(topGap < 0 ? DEFAULT_GAP : topGap, |
| leftGap < 0 ? DEFAULT_GAP : leftGap, 0, 0); |
| } |
| |
| add(component == null ? createSeparator() : component, |
| new GridBagConstraints(x, y, |
| 1, 1, |
| weightx, weighty, |
| getAnchor(hLayout, vLayout), getFill(hLayout, vLayout), |
| insets, 0, 0)); |
| |
| return this; |
| } |
| |
| public void setComponent(Component component, int col, int row) { |
| assert col >= 0 && col < cols; |
| assert row >= 0; |
| |
| GridBagLayout layout = (GridBagLayout) getLayout(); |
| |
| for (int i = 0; i < getComponentCount(); i++) { |
| Component oldComponent = getComponent(i); |
| |
| GridBagConstraints constraints = layout.getConstraints(oldComponent); |
| |
| if (constraints.gridx == col && constraints.gridy == row) { |
| remove(i); |
| |
| add(component == null ? createSeparator() : component, constraints); |
| |
| validate(); |
| repaint(); |
| |
| return; |
| } |
| } |
| |
| // Cell not found |
| assert false; |
| } |
| |
| private static JComponent createSeparator() { |
| return new JLabel(); |
| } |
| |
| private static int getFill(Layout hLayout, Layout vLayout) { |
| if (hLayout == Layout.FILL) { |
| return vLayout == Layout.FILL ? GridBagConstraints.BOTH : GridBagConstraints.HORIZONTAL; |
| } |
| |
| return vLayout == Layout.FILL ? GridBagConstraints.VERTICAL : GridBagConstraints.NONE; |
| } |
| |
| private static ComponentType getComponentType(Component component) { |
| if (component == null |
| || component instanceof JLabel |
| || component instanceof JRadioButton |
| || component instanceof JCheckBox |
| || component instanceof JButton) { |
| return ComponentType.NO_RESIZABLE; |
| } |
| |
| if (component instanceof JComboBox |
| || component instanceof JTextField) { |
| return ComponentType.HORIZONTAL_FILL; |
| } |
| |
| return ComponentType.FULL; |
| } |
| |
| private static Layout getHLayout(Component component) { |
| if (getComponentType(component) == ComponentType.NO_RESIZABLE) { |
| return Layout.FIRST; |
| } else { |
| return Layout.FILL; |
| } |
| } |
| |
| private static Layout getVLayout(Component component) { |
| if (getComponentType(component) == ComponentType.FULL) { |
| return Layout.FILL; |
| } else { |
| return Layout.CENTER; |
| } |
| } |
| |
| private static final int[][] ANCHORS = new int[][]{ |
| {GridBagConstraints.NORTHWEST, GridBagConstraints.NORTH, GridBagConstraints.NORTHEAST}, |
| {GridBagConstraints.WEST, GridBagConstraints.CENTER, GridBagConstraints.EAST}, |
| {GridBagConstraints.SOUTHWEST, GridBagConstraints.SOUTH, GridBagConstraints.SOUTHEAST} |
| }; |
| |
| private static int getAnchorIndex(Layout layout) { |
| if (layout == Layout.CENTER) { |
| return 1; |
| } else if (layout == Layout.LAST) { |
| return 2; |
| } else { |
| return 0; |
| } |
| } |
| |
| private static int getAnchor(Layout hLayout, Layout vLayout) { |
| return ANCHORS[getAnchorIndex(vLayout)][getAnchorIndex(hLayout)]; |
| } |
| |
| public void setBorderEqual(int border) { |
| setBorder(BorderFactory.createEmptyBorder(border, border, border, border)); |
| } |
| } |