// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.gui.download;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridBagLayout;
import java.awt.Toolkit;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.FlavorEvent;
import java.awt.datatransfer.FlavorListener;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.IOException;
import javax.swing.AbstractAction;
import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.JTextComponent;
import org.openstreetmap.josm.data.Bounds;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.tools.GBC;
import org.openstreetmap.josm.tools.ImageProvider;
import org.openstreetmap.josm.tools.OsmUrlToBounds;
/**
* Bounding box selector.
*
* Provides max/min lat/lon input fields as well as the "URL from www.openstreetmap.org" text field.
*
* @author Frederik Ramm <frederik@remote.org>
*
*/
public class BoundingBoxSelection implements DownloadSelection {
private JTextField[] latlon = null;
private final JTextArea tfOsmUrl = new JTextArea();
private final JTextArea showUrl = new JTextArea();
private DownloadDialog parent;
protected void registerBoundingBoxBuilder() {
BoundingBoxBuilder bboxbuilder = new BoundingBoxBuilder();
for (int i = 0;i < latlon.length; i++) {
latlon[i].addFocusListener(bboxbuilder);
latlon[i].addActionListener(bboxbuilder);
}
}
protected void buildDownloadAreaInputFields() {
latlon = new JTextField[4];
for(int i=0; i< 4; i++) {
latlon[i] = new JTextField(11);
latlon[i].setMinimumSize(new Dimension(100,new JTextField().getMinimumSize().height));
latlon[i].addFocusListener(new SelectAllOnFocusHandler(latlon[i]));
}
LatValueChecker latChecker = new LatValueChecker(latlon[0]);
latlon[0].addFocusListener(latChecker);
latlon[0].addActionListener(latChecker);
latChecker = new LatValueChecker(latlon[2]);
latlon[2].addFocusListener(latChecker);
latlon[2].addActionListener(latChecker);
LonValueChecker lonChecker = new LonValueChecker(latlon[1]);
latlon[1].addFocusListener(lonChecker);
latlon[1].addActionListener(lonChecker);
lonChecker = new LonValueChecker(latlon[3]);
latlon[3].addFocusListener(lonChecker);
latlon[3].addActionListener(lonChecker);
registerBoundingBoxBuilder();
}
public void addGui(final DownloadDialog gui) {
buildDownloadAreaInputFields();
final JPanel dlg = new JPanel(new GridBagLayout());
tfOsmUrl.getDocument().addDocumentListener(new OsmUrlRefresher());
// select content on receiving focus. this seems to be the default in the
// windows look+feel but not for others. needs invokeLater to avoid strange
// side effects that will cancel out the newly made selection otherwise.
tfOsmUrl.addFocusListener(new SelectAllOnFocusHandler(tfOsmUrl));
tfOsmUrl.setLineWrap(true);
tfOsmUrl.setBorder(latlon[0].getBorder());
dlg.add(new JLabel(tr("min lat")), GBC.std().insets(10,20,5,0));
dlg.add(latlon[0], GBC.std().insets(0,20,0,0));
dlg.add(new JLabel(tr("min lon")), GBC.std().insets(10,20,5,0));
dlg.add(latlon[1], GBC.eol().insets(0,20,0,0));
dlg.add(new JLabel(tr("max lat")), GBC.std().insets(10,0,5,0));
dlg.add(latlon[2], GBC.std());
dlg.add(new JLabel(tr("max lon")), GBC.std().insets(10,0,5,0));
dlg.add(latlon[3], GBC.eol());
dlg.add(new JLabel(tr("URL from www.openstreetmap.org (you can paste an URL here to download the area)")), GBC.eol().insets(10,20,5,0));
dlg.add(tfOsmUrl, GBC.eop().insets(10,0,5,0).fill());
tfOsmUrl.addMouseListener(
new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
checkPopup(e);
}
@Override
public void mouseClicked(MouseEvent e) {
checkPopup(e);
}
@Override
public void mouseReleased(MouseEvent e) {
checkPopup(e);
}
private void checkPopup(MouseEvent e) {
if (e.isPopupTrigger()) {
OsmUrlPopup popup = new OsmUrlPopup();
popup.show(tfOsmUrl, e.getX(), e.getY());
}
}
}
);
dlg.add(showUrl, GBC.eop().insets(10,0,5,5));
showUrl.setEditable(false);
showUrl.setBackground(dlg.getBackground());
showUrl.addFocusListener(new SelectAllOnFocusHandler(showUrl));
gui.addDownloadAreaSelector(dlg, tr("Bounding Box"));
this.parent = gui;
}
public void setDownloadArea(Bounds area) {
updateBboxFields(area);
updateUrl(area);
}
public Bounds getDownloadArea() {
double[] values = new double[4];
for (int i=0; i < 4; i++) {
try {
values[i] = Double.parseDouble(latlon[i].getText());
} catch(NumberFormatException x) {
return null;
}
}
if (!LatLon.isValidLat(values[0]) || !LatLon.isValidLon(values[1]))
return null;
if (!LatLon.isValidLat(values[2]) || !LatLon.isValidLon(values[3]))
return null;
return new Bounds(values);
}
private boolean parseURL(DownloadDialog gui) {
Bounds b = OsmUrlToBounds.parse(tfOsmUrl.getText());
if(b == null) return false;
gui.boundingBoxChanged(b,BoundingBoxSelection.this);
updateBboxFields(b);
updateUrl(b);
return true;
}
private void updateBboxFields(Bounds area) {
if (area == null) return;
latlon[0].setText(Double.toString(area.getMin().lat()));
latlon[1].setText(Double.toString(area.getMin().lon()));
latlon[2].setText(Double.toString(area.getMax().lat()));
latlon[3].setText(Double.toString(area.getMax().lon()));
for (JTextField tf: latlon) {
resetErrorMessage(tf);
}
}
private void updateUrl(Bounds area) {
if (area == null) return;
showUrl.setText(OsmUrlToBounds.getURL(area));
}
private Border errorBorder = BorderFactory.createLineBorder(Color.RED, 1);
protected void setErrorMessage(JTextField tf, String msg) {
tf.setBorder(errorBorder);
tf.setToolTipText(msg);
}
protected void resetErrorMessage(JTextField tf) {
tf.setBorder(UIManager.getBorder("TextField.border"));
tf.setToolTipText("");
}
class LatValueChecker extends FocusAdapter implements ActionListener{
private JTextField tfLatValue;
public LatValueChecker(JTextField tfLatValue) {
this.tfLatValue = tfLatValue;
}
protected void check() {
double value = 0;
try {
value = Double.parseDouble(tfLatValue.getText());
} catch(NumberFormatException ex) {
setErrorMessage(tfLatValue,tr("The string ''{0}'' is not a valid double value.", tfLatValue.getText()));
return;
}
if (!LatLon.isValidLat(value)) {
setErrorMessage(tfLatValue,tr("Value for latitude in range [-90,90] required.", tfLatValue.getText()));
return;
}
resetErrorMessage(tfLatValue);
}
@Override
public void focusLost(FocusEvent e) {
check();
}
public void actionPerformed(ActionEvent e) {
check();
}
}
class LonValueChecker extends FocusAdapter implements ActionListener {
private JTextField tfLonValue;
public LonValueChecker(JTextField tfLonValue) {
this.tfLonValue = tfLonValue;
}
protected void check() {
double value = 0;
try {
value = Double.parseDouble(tfLonValue.getText());
} catch(NumberFormatException ex) {
setErrorMessage(tfLonValue,tr("The string ''{0}'' is not a valid double value.", tfLonValue.getText()));
return;
}
if (!LatLon.isValidLon(value)) {
setErrorMessage(tfLonValue,tr("Value for longitude in range [-180,180] required.", tfLonValue.getText()));
return;
}
resetErrorMessage(tfLonValue);
}
@Override
public void focusLost(FocusEvent e) {
check();
}
public void actionPerformed(ActionEvent e) {
check();
}
}
static class SelectAllOnFocusHandler extends FocusAdapter {
private JTextComponent tfTarget;
public SelectAllOnFocusHandler(JTextComponent tfTarget) {
this.tfTarget = tfTarget;
}
@Override
public void focusGained(FocusEvent e) {
tfTarget.selectAll();
}
}
class OsmUrlRefresher implements DocumentListener {
public void changedUpdate(DocumentEvent e) { parseURL(parent); }
public void insertUpdate(DocumentEvent e) { parseURL(parent); }
public void removeUpdate(DocumentEvent e) { parseURL(parent); }
}
class PasteUrlAction extends AbstractAction implements FlavorListener {
public PasteUrlAction() {
putValue(NAME, tr("Paste"));
putValue(SMALL_ICON, ImageProvider.get("paste"));
putValue(SHORT_DESCRIPTION, tr("Paste URL from clipboard"));
Toolkit.getDefaultToolkit().getSystemClipboard().addFlavorListener(this);
}
protected String getClipboardContent() {
Transferable t = Toolkit.getDefaultToolkit().getSystemClipboard().getContents(null);
try {
if (t != null && t.isDataFlavorSupported(DataFlavor.stringFlavor)) {
String text = (String)t.getTransferData(DataFlavor.stringFlavor);
return text;
}
} catch (UnsupportedFlavorException ex) {
ex.printStackTrace();
return null;
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
return null;
}
public void actionPerformed(ActionEvent e) {
String content = getClipboardContent();
if (content != null) {
tfOsmUrl.setText(content);
}
}
protected void updateEnabledState() {
setEnabled(getClipboardContent() != null);
}
public void flavorsChanged(FlavorEvent e) {
updateEnabledState();
}
}
class OsmUrlPopup extends JPopupMenu {
public OsmUrlPopup() {
add(new PasteUrlAction());
}
}
class BoundingBoxBuilder extends FocusAdapter implements ActionListener {
protected Bounds build() {
double minlon, minlat, maxlon,maxlat;
try {
minlon = Double.parseDouble(latlon[0].getText().trim());
minlat = Double.parseDouble(latlon[1].getText().trim());
maxlon = Double.parseDouble(latlon[2].getText().trim());
maxlat = Double.parseDouble(latlon[3].getText().trim());
} catch(NumberFormatException e) {
return null;
}
if (!LatLon.isValidLon(minlon) || !LatLon.isValidLon(maxlon)
|| !LatLon.isValidLat(minlat) || ! LatLon.isValidLat(maxlat))
return null;
if (minlon > maxlon)
return null;
if (minlat > maxlat)
return null;
return new Bounds(minlon,minlat,maxlon,maxlat);
}
protected void refreshBounds() {
Bounds b = build();
parent.boundingBoxChanged(b, BoundingBoxSelection.this);
}
@Override
public void focusLost(FocusEvent e) {
refreshBounds();
}
public void actionPerformed(ActionEvent e) {
refreshBounds();
}
}
}