/*
* Copyright 2004-2007 IDCA. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and
* the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY IDCA 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 IDCA 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.
*
* The views and conclusions contained in the software and documentation are those of the authors and
* should not be interpreted as representing official policies, either expressed or implied, of IDCA.
*/
package com.idcanet.vasc.frontends.swing;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Font;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.Spring;
import javax.swing.SpringLayout;
import javax.swing.UIManager;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import com.idcanet.fff.SwingImageHelper;
import com.idcanet.vasc.core.VascEntry;
import com.idcanet.vasc.core.VascEntryField;
import com.idcanet.vasc.core.VascFrontend;
import com.idcanet.vasc.core.actions.GlobalVascAction;
import com.idcanet.vasc.core.actions.RowVascAction;
import com.idcanet.vasc.core.entry.VascEntryExporter;
import com.idcanet.vasc.core.entry.VascEntryEventListener.VascEventType;
import com.idcanet.vasc.core.ui.VascColumnValueModelListener;
import com.idcanet.vasc.core.ui.VascList;
import com.idcanet.vasc.core.ui.VascUIComponent;
import com.idcanet.vasc.core.ui.VascValueModel;
/**
*
* @author Willem Cazander
* @version 1.0 Mar 21, 2007
*/
public class SwingVascFrontend implements VascFrontend {
private String name = null;
private Logger logger = null;
private JComponent parent = null;
private VascEntry entry = null;
public SwingVascFrontend(JComponent parent) {
logger = Logger.getLogger(SwingVascFrontend.class.getName());
this.parent=parent;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public void initEntry(VascEntry entry) throws Exception {
if (entry.getVascFrontendData().getVascFrontend()==null) {
entry.getVascFrontendData().setVascFrontend(this);
} else {
if (entry.getVascFrontendData().getVascFrontend()!=this) {
throw new IllegalArgumentException("VascEntry has already a differtent VascViewRenderer attected");
}
}
entry.getVascFrontendData().getVascFrontendHelper().refreshData(entry);
/*
entry.putUIComponent(VascTextField.class, SwingTextField.class);
entry.putUIComponent(VascList.class, SwingList.class);
entry.putUIComponent(VascToggle.class, SwingToggle.class);
entry.putUIComponent(VascDate.class, SwingDate.class);
entry.putUIComponent(VascColorChooser.class, SwingColorChooser.class);
*/
this.entry=entry;
}
public ImageIcon getImageIcon(String imageResource) {
/// TODO hack beter
String key = entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(imageResource);
//logger.fine("KEY======================="+key);
if (key.indexOf("META-INF")>0 | key.indexOf("resource")>0) {
return SwingImageHelper.getImageIcon(key);
} else {
return null;
}
}
/**
* @see com.idcanet.vasc.core.VascViewRenderer#renderEdit(com.idcanet.vasc.core.VascEntry, java.lang.Object)
*/
public void renderEdit(Object rowBean) throws Exception {
logger.fine("Rending Edit View");
rowBean = entry.getVascFrontendData().getVascFrontendHelper().initEditObject(entry, rowBean);
String beanValue = rowBean.toString();
if (entry.getDisplayNameFieldId()!=null) {
VascEntryField v = entry.getVascEntryFieldById(entry.getDisplayNameFieldId());
Object vv = v.getVascEntryFieldValue().getValue(v, rowBean);
if (vv==null) {
beanValue="";
} else {
beanValue=""+vv;
}
if (beanValue.length()>30) {
beanValue=beanValue.substring(0, 30);
}
}
SwingEditDialog dialog = new SwingEditDialog(parent,entry,rowBean,entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue("vasc.dialog.edit.title"),entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue("vasc.dialog.edit.message",beanValue));
Object result = dialog.openDialog();
logger.finest("OPEN closed : "+result);
if(result==null) {
return;
}
entry.getVascFrontendData().getVascFrontendHelper().mergeObject(entry, result);
}
public void renderDelete(Object rowBean) throws Exception {
String beanValue = rowBean.toString();
if (entry.getDisplayNameFieldId()!=null) {
VascEntryField v = entry.getVascEntryFieldById(entry.getDisplayNameFieldId());
beanValue = ""+v.getVascEntryFieldValue().getValue(v, rowBean);
if (beanValue.length()>30) {
beanValue=beanValue.substring(0, 30);
}
}
int response = JOptionPane.showOptionDialog(
parent // Center in window.
, entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue("vasc.dialog.delete.message",beanValue) // Message
, entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue("vasc.dialog.delete.title") // Title in titlebar
, JOptionPane.YES_NO_OPTION // Option type
, JOptionPane.PLAIN_MESSAGE // messageType
, null // Icon (none)
, null // Button text as above.
, null // Default button's label
);
if (response==JOptionPane.YES_OPTION) {
entry.getVascFrontendData().getVascBackend().delete(rowBean);
entry.getVascFrontendData().getEntryDataList().remove(rowBean);
entry.getVascFrontendData().setEntryDataObject(null);
//entry.getVascFrontendController().getVascFrontendHelper().fireVascEvent(VascEventListener.VascEventType.DATA_UPDATE, rowBean);
}
}
class SwingEditDialog extends JDialog {
private static final long serialVersionUID = 10L;
private String headerText = null;
private Object result = null;
private Object bean = null;
public SwingEditDialog(JComponent parent,VascEntry entry,Object bean,String title,String headerText) throws Exception {
super();
this.headerText = headerText;
this.bean = bean;
setTitle(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(title));
setModal(true);
JPanel pane = new JPanel();
pane.setLayout(new BorderLayout());
JPanel header = new JPanel();
createHeader(header);
pane.add(header,BorderLayout.NORTH);
JPanel body = new JPanel();
createBody(body);
pane.add(body,BorderLayout.CENTER);
JPanel footer = new JPanel();
createFooter(footer);
pane.add(footer,BorderLayout.SOUTH);
add(pane);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
//Ensure the text field always gets the first focus.
//addComponentListener(new ComponentAdapter() {
// public void componentShown(ComponentEvent ce) {
// textField.requestFocusInWindow();
// }
/// });
pack();
setLocationRelativeTo(parent);
}
public Object openDialog() {
setVisible(true);
return result;
}
public void createHeader(JPanel header) {
JLabel l = new JLabel();
l.setText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(headerText));
l.setFont(new Font(null,Font.BOLD, 14));
//l.setToolTipText(entry.getVascTextValue().getTextValue(headerText));
header.add(l);
}
public void createBody(JPanel body) throws Exception {
body.setLayout(new SpringLayout());
int column = 0;
for(VascEntryField c:entry.getVascEntryFields()) {
entry.getVascFrontendData().getVascFrontendHelper().initEditObjectColumn(c, bean);
if (c.isEdit()==false) {
continue;
}
column++;
JLabel l = new JLabel();
l.setHorizontalAlignment(JLabel.TRAILING);
l.setText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(c.getName()));
if(c.getDescription()!=null) {
l.setToolTipText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(c.getDescription()));
}
body.add(l);
if (c.isEditReadOnly()==true) {
JLabel valueLabel = new JLabel();
valueLabel.setText(""+c.getVascEntryFieldValue().getValue(c, bean));
//c.setColumnEditor(valueLabel);
body.add(valueLabel);
continue;
}
if(c.getVascEntryFieldType().getVascUIComponent()==null) {
JLabel valueLabel = new JLabel();
valueLabel.setText(""+c.getVascEntryFieldValue().getValue(c, bean));
//c.setColumnEditor(valueLabel);
body.add(valueLabel);
} else {
VascUIComponent comp = c.getVascEntryFieldType().getVascUIComponent();
VascValueModel model = new VascValueModel(entry);
model.setValue(c.getVascEntryFieldValue().getValue(c, bean));
model.addListener(new VascColumnValueModelListener(c,bean));
comp.createComponent(entry, model, body);
//c.setColumnEditor(comp);
}
}
//JComponent, rows, cols, initX, initY ,xPad, yPad
SpringUtilities.makeCompactGrid(body, column,2, 6,6, 6,6);
}
public void createFooter(JPanel footer) {
JButton saveButton = new JButton();
saveButton.setIcon(getImageIcon("vasc.dialog.save.image"));
saveButton.setText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue("vasc.dialog.save.name"));
saveButton.setToolTipText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue("vasc.dialog.save.tooltip"));
saveButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
if(entry.getVascFrontendData().getVascFrontendHelper().setUIComponentsBeanErrors(entry, bean)) {
return;
}
result = bean;
setVisible(false);
}
});
footer.add(saveButton);
JButton cancelButton = new JButton();
cancelButton.setIcon(getImageIcon("vasc.dialog.cancel.image"));
cancelButton.setText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue("vasc.dialog.cancel.name"));
cancelButton.setToolTipText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue("vasc.dialog.cancel.tooltip"));
cancelButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
result = null;
setVisible(false);
}
});
footer.add(cancelButton);
}
}
/**
* @see com.idcanet.vasc.core.VascViewRenderer#renderExport(com.idcanet.vasc.core.VascEntry, com.idcanet.vasc.core.VascDataExporter)
*/
public void renderExport(VascEntryExporter exporter) throws Exception {
String fileName = null;
JFileChooser c = new JFileChooser();
// Demonstrate "Save" dialog:
int rVal = c.showSaveDialog(null);
if (rVal == JFileChooser.APPROVE_OPTION) {
fileName = c.getSelectedFile().getAbsolutePath();
// filename.setText(c.getSelectedFile().getName());
//dir.setText(c.getCurrentDirectory().toString());
}
if (rVal == JFileChooser.CANCEL_OPTION) {
return;
}
logger.fine("FileName: "+fileName);
if (fileName == null) {
return;
}
OutputStream out = new FileOutputStream(fileName);
try {
exporter.doExport(out, entry);
} catch (Exception e) {
entry.getVascFrontendData().getVascFrontendHelper().handleException(e, entry);
} finally {
if (out!=null) {
out.close();
}
}
}
/**
* @see com.idcanet.vasc.core.VascViewRenderer#renderView(com.idcanet.vasc.core.VascEntry)
*/
public void renderView() throws Exception {
JPanel topPanel = new JPanel();
topPanel.setLayout(new BorderLayout());
//topPanel.setBackground(Color.PINK);
JPanel n = new JPanel();
topPanel.add(n,BorderLayout.NORTH);
renderHeader(n);
JPanel c = new JPanel();
c.setLayout(new BorderLayout());
topPanel.add(c,BorderLayout.CENTER);
renderBody(c);
JPanel f = new JPanel();
//f.setBackground(Color.BLUE);
topPanel.add(f,BorderLayout.SOUTH);
renderFooter(f);
//parent.setBackground(Color.CYAN);
parent.setLayout(new BorderLayout());
parent.add(topPanel);
}
private void renderHeader(JComponent parent2) {
JPanel header = new JPanel();
header.setLayout(new BorderLayout());
header.setBackground(Color.WHITE);
header.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
if(entry.getHeaderImage()!=null) {
JLabel l = new JLabel();
// TODO: hack images working
l.setIcon(new ImageIcon(Toolkit.getDefaultToolkit().createImage(getClass().getResource(entry.getHeaderImage())).getScaledInstance(32, 32, Image.SCALE_SMOOTH)));
if (entry.getHeaderDescription()!=null) {
l.setToolTipText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(entry.getHeaderDescription()));
}
header.add(l,BorderLayout.WEST);
}
if(entry.getHeaderName()!=null) {
JLabel l = new JLabel(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(entry.getHeaderName()));
l.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
l.setFont(new Font(null,Font.BOLD, 18));
if (entry.getHeaderDescription()!=null) {
l.setToolTipText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(entry.getHeaderDescription()));
}
header.add(l,BorderLayout.CENTER);
}
JPanel top = new JPanel();
//top.setBackground(Color.BLUE);
for (GlobalVascAction action:entry.getGlobalActions()) {
JButton but = new JButton();
but.setText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(action.getName()));
but.setToolTipText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(action.getToolTip()));
but.addActionListener(new GlobalActionListener(action));
but.setIcon(getImageIcon(action.getImage()));
top.add(but);
}
// create options
JPanel optionPanel = new JPanel();
//top.setBackground(Color.GREEN);
//for(VascUserOption option:entry.getUserOptions()) {
// option.createUserOptionRenderer(entry);
//}
//top.add(header,BorderLayout.NORTH);
parent2.setLayout(new BorderLayout());
parent2.add(header,BorderLayout.NORTH);
parent2.add(optionPanel,BorderLayout.CENTER);
parent2.add(top,BorderLayout.EAST);
}
private void renderBody(JComponent parent2) {
VascColumnModel model = new VascColumnModel();
//TODO: entry.getVascEntryController().addEventListener(model);
JTable table = new JTable();
//TODO: remove this extra model for sorting, AND fixup a real sorting stuff
TableSorter tableSorter = new TableSorter();
// this regs the listeners for the sorting
tableSorter.setTableHeader(table.getTableHeader());
tableSorter.setTableModel(model);
table.setModel(tableSorter);
table.getTableHeader().setReorderingAllowed(false);
// remove auto columns :(
int cols = table.getColumnModel().getColumnCount();
for (int i=0;i<cols;i++) {
TableColumn c = table.getColumnModel().getColumn(0); // idd, just remove index 0 every time
table.removeColumn(c);
}
table.revalidate();
TableCellRenderer renderer = new JComponententryCellRenderer();
int counter=0;
for(VascEntryField c:entry.getVascEntryFields()) {
if (c.isList()==false) {
continue;
}
TableColumn t = new TableColumn();
if (c.getSizeList()!=null) {
t.setPreferredWidth(c.getSizeList());
} else {
t.setPreferredWidth(200);
}
t.setHeaderValue(c);
t.setHeaderRenderer(renderer);
t.setModelIndex(counter);
table.addColumn(t);
counter++;
}
table.getSelectionModel().addListSelectionListener(new entrySectionListener(table,tableSorter));
table.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
table.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
if (e.getClickCount() == 2) {
Object o = entry.getVascFrontendData().getEntryDataObject();
if (o==null) {
return;
}
try {
// TODO: fix this
entry.getVascFrontendData().getVascFrontend().renderEdit(o);
} catch (Exception ee) {
entry.getVascFrontendData().getVascFrontendHelper().handleException(ee, entry);
}
}
}
});
JScrollPane scrollPane = new JScrollPane(table);
parent2.add(scrollPane);
}
class entrySectionListener implements ListSelectionListener {
JTable table;
TableSorter tableSorter;
entrySectionListener(JTable table,TableSorter tableSorter) {
this.table = table;
this.tableSorter=tableSorter;
}
public void valueChanged(ListSelectionEvent e) {
if (e.getValueIsAdjusting()) {
return;
}
int rowIndex = table.getSelectedRow();
if (rowIndex!=-1) {
// temp; gets index by sorter
rowIndex = tableSorter.modelIndex(rowIndex);
Object data = entry.getVascFrontendData().getEntryDataList().get(rowIndex);
entry.getVascFrontendData().setEntryDataObject(data);
} else {
entry.getVascFrontendData().setEntryDataObject(null);
}
}
}
class JComponententryCellRenderer extends DefaultTableCellRenderer {
private static final long serialVersionUID = 10L;
public Component getentryCellRendererComponent(JTable table, Object value, boolean isSelected,boolean hasFocus, int row, int column) {
VascEntryField c = (VascEntryField)value;
setText(c.getVascEntry().getVascFrontendData().getVascEntryResourceResolver().getTextValue(c.getName()));
setToolTipText(c.getVascEntry().getVascFrontendData().getVascEntryResourceResolver().getTextValue(c.getDescription()));
if(c.getImage()!=null) {
setIcon(getImageIcon(c.getImage()));
} else {
setIcon(null);
}
if (entry != null) {
JTableHeader header = table.getTableHeader();
if (header != null) {
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
}
}
setBorder(UIManager.getBorder("entryHeader.cellBorder"));
return this;
}
}
private void renderFooter(JComponent parent2) {
logger.finest("Creating footer");
JPanel panel = new JPanel();
for(RowVascAction action:entry.getRowActions()) {
JButton but = new JButton();
but.setText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(action.getName()));
but.setToolTipText(entry.getVascFrontendData().getVascEntryResourceResolver().getTextValue(action.getToolTip()));
but.setIcon(getImageIcon(action.getImage()));
but.addActionListener(new RowActionListener(action));
panel.add(but);
}
parent2.setLayout(new BorderLayout());
parent2.add(panel,BorderLayout.WEST);
}
class RowActionListener implements ActionListener {
private RowVascAction action = null;
public RowActionListener(RowVascAction action) {
this.action=action;
}
public void actionPerformed(ActionEvent event) {
logger.fine("Row Action");
try {
action.doRowAction(entry, entry.getVascFrontendData().getEntryDataObject());
} catch (Exception e) {
entry.getVascFrontendData().getVascFrontendHelper().handleException(e, entry);
}
}
}
class GlobalActionListener implements ActionListener {
private GlobalVascAction action = null;
public GlobalActionListener(GlobalVascAction action) {
this.action=action;
}
public void actionPerformed(ActionEvent event) {
logger.fine("Global Action");
try {
action.doGlobalAction(entry);
} catch (Exception e) {
entry.getVascFrontendData().getVascFrontendHelper().handleException(e, entry);
}
}
}
class VascColumnModel extends AbstractTableModel { //implements VascEventListener {
private static final long serialVersionUID = 10L;
public void vascEvent(VascEventType e,Object o) {
if (e==VascEventType.DATA_UPDATE) {
fireTableDataChanged();
}
}
/**
* @see javax.swing.entry.entryModel#getColumnCount()
*/
public int getColumnCount() {
int result = 0;
for(VascEntryField c:entry.getVascEntryFields()) {
if (c.isList()==false) {
continue;
}
result++;
}
return result;
}
/**
* @see javax.swing.entry.entryModel#getRowCount()
*/
public int getRowCount() {
if (entry.getVascFrontendData().getEntryDataList()==null) {
return 0;
}
return entry.getVascFrontendData().getEntryDataList().size();
}
/**
* @see javax.swing.entry.entryModel#getValueAt(int, int)
*/
public Object getValueAt(int rowIndex, int columnIndex) {
Object bean = entry.getVascFrontendData().getEntryDataList().get(rowIndex);
logger.finer("Rending column; "+columnIndex+" bean: "+bean);
// TODO: this is slowing....
List<VascEntryField> list = new ArrayList<VascEntryField>();
for(VascEntryField c:entry.getVascEntryFields()) {
if (c.isList()==false) {
continue;
}
list.add(c);
}
VascEntryField vtc = list.get(columnIndex);
try {
//if (vtc.getVascColumnRenderer()!=null) {
// return vtc.getVascColumnRenderer().rendererColumn(vtc,bean);
//} else {
return ""+vtc.getVascEntryFieldValue().getValue(vtc,bean);
// }
} catch (Exception e) {
return "Error";
}
}
}
}
/**
* A 1.4 file that provides utility methods for creating form- or grid-style
* layouts with SpringLayout. These utilities are used by several programs, such
* as SpringBox and SpringCompactGrid.
*/
class SpringUtilities {
/**
* Aligns the first <code>rows</code>*<code>cols</code> components of
* <code>parent</code> in a grid. Each component is as big as the maximum
* preferred width and height of the components. The parent is made just big
* enough to fit them all.
*
* @param rows
* number of rows
* @param cols
* number of columns
* @param initialX
* x location to start the grid at
* @param initialY
* y location to start the grid at
* @param xPad
* x padding between cells
* @param yPad
* y padding between cells
*/
public static void makeGrid(Container parent, int rows, int cols,
int initialX, int initialY, int xPad, int yPad) {
SpringLayout layout;
try {
layout = (SpringLayout) parent.getLayout();
} catch (ClassCastException exc) {
System.err
.println("The first argument to makeGrid must use SpringLayout.");
return;
}
Spring xPadSpring = Spring.constant(xPad);
Spring yPadSpring = Spring.constant(yPad);
Spring initialXSpring = Spring.constant(initialX);
Spring initialYSpring = Spring.constant(initialY);
int max = rows * cols;
//Calculate Springs that are the max of the width/height so that all
//cells have the same size.
Spring maxWidthSpring = layout.getConstraints(parent.getComponent(0))
.getWidth();
Spring maxHeightSpring = layout.getConstraints(parent.getComponent(0))
.getWidth();
for (int i = 1; i < max; i++) {
SpringLayout.Constraints cons = layout.getConstraints(parent
.getComponent(i));
maxWidthSpring = Spring.max(maxWidthSpring, cons.getWidth());
maxHeightSpring = Spring.max(maxHeightSpring, cons.getHeight());
}
//Apply the new width/height Spring. This forces all the
//components to have the same size.
for (int i = 0; i < max; i++) {
SpringLayout.Constraints cons = layout.getConstraints(parent
.getComponent(i));
cons.setWidth(maxWidthSpring);
cons.setHeight(maxHeightSpring);
}
//Then adjust the x/y constraints of all the cells so that they
//are aligned in a grid.
SpringLayout.Constraints lastCons = null;
SpringLayout.Constraints lastRowCons = null;
for (int i = 0; i < max; i++) {
SpringLayout.Constraints cons = layout.getConstraints(parent
.getComponent(i));
if (i % cols == 0) { //start of new row
lastRowCons = lastCons;
cons.setX(initialXSpring);
} else { //x position depends on previous component
cons.setX(Spring.sum(lastCons.getConstraint(SpringLayout.EAST),
xPadSpring));
}
if (i / cols == 0) { //first row
cons.setY(initialYSpring);
} else { //y position depends on previous row
cons.setY(Spring.sum(lastRowCons
.getConstraint(SpringLayout.SOUTH), yPadSpring));
}
lastCons = cons;
}
//Set the parent's size.
SpringLayout.Constraints pCons = layout.getConstraints(parent);
pCons.setConstraint(SpringLayout.SOUTH, Spring.sum(Spring
.constant(yPad), lastCons.getConstraint(SpringLayout.SOUTH)));
pCons.setConstraint(SpringLayout.EAST, Spring.sum(
Spring.constant(xPad), lastCons
.getConstraint(SpringLayout.EAST)));
}
/* Used by makeCompactGrid. */
private static SpringLayout.Constraints getConstraintsForCell(int row,
int col, Container parent, int cols) {
SpringLayout layout = (SpringLayout) parent.getLayout();
Component c = parent.getComponent(row * cols + col);
return layout.getConstraints(c);
}
/**
* Aligns the first <code>rows</code>*<code>cols</code> components of
* <code>parent</code> in a grid. Each component in a column is as wide as
* the maximum preferred width of the components in that column; height is
* similarly determined for each row. The parent is made just big enough to
* fit them all.
*
* @param rows
* number of rows
* @param cols
* number of columns
* @param initialX
* x location to start the grid at
* @param initialY
* y location to start the grid at
* @param xPad
* x padding between cells
* @param yPad
* y padding between cells
*/
public static void makeCompactGrid(Container parent, int rows, int cols,
int initialX, int initialY, int xPad, int yPad) {
SpringLayout layout;
try {
layout = (SpringLayout) parent.getLayout();
} catch (ClassCastException exc) {
System.err
.println("The first argument to makeCompactGrid must use SpringLayout.");
return;
}
//Align all cells in each column and make them the same width.
Spring x = Spring.constant(initialX);
for (int c = 0; c < cols; c++) {
Spring width = Spring.constant(0);
for (int r = 0; r < rows; r++) {
width = Spring.max(width, getConstraintsForCell(r, c, parent,
cols).getWidth());
}
for (int r = 0; r < rows; r++) {
SpringLayout.Constraints constraints = getConstraintsForCell(r,
c, parent, cols);
constraints.setX(x);
constraints.setWidth(width);
}
x = Spring.sum(x, Spring.sum(width, Spring.constant(xPad)));
}
//Align all cells in each row and make them the same height.
Spring y = Spring.constant(initialY);
for (int r = 0; r < rows; r++) {
Spring height = Spring.constant(0);
for (int c = 0; c < cols; c++) {
height = Spring.max(height, getConstraintsForCell(r, c, parent,
cols).getHeight());
}
for (int c = 0; c < cols; c++) {
SpringLayout.Constraints constraints = getConstraintsForCell(r,
c, parent, cols);
constraints.setY(y);
constraints.setHeight(height);
}
y = Spring.sum(y, Spring.sum(height, Spring.constant(yPad)));
}
//Set the parent's size.
SpringLayout.Constraints pCons = layout.getConstraints(parent);
pCons.setConstraint(SpringLayout.SOUTH, y);
pCons.setConstraint(SpringLayout.EAST, x);
}
}