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/*
* Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Sun Microsystems nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
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));
}
}
