// License: GPL. For details, see LICENSE file.
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.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 javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
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.CoordinateFormat;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.gui.widgets.JosmTextArea;
import org.openstreetmap.josm.gui.widgets.JosmTextField;
import org.openstreetmap.josm.tools.GBC;
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
*
*/
public class BoundingBoxSelection implements DownloadSelection {
private JosmTextField[] latlon;
private final JosmTextArea tfOsmUrl = new JosmTextArea();
private final JosmTextArea showUrl = new JosmTextArea();
private DownloadDialog parent;
protected void registerBoundingBoxBuilder() {
BoundingBoxBuilder bboxbuilder = new BoundingBoxBuilder();
for (JosmTextField ll : latlon) {
ll.addFocusListener(bboxbuilder);
ll.addActionListener(bboxbuilder);
}
}
protected void buildDownloadAreaInputFields() {
latlon = new JosmTextField[4];
for (int i = 0; i < 4; i++) {
latlon[i] = new JosmTextField(11);
latlon[i].setMinimumSize(new Dimension(100, new JosmTextField().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();
}
@Override
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());
final JButton btnClear = new JButton(tr("Clear textarea"));
btnClear.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {
tfOsmUrl.setText("");
}
});
dlg.add(btnClear, GBC.eol().insets(10, 20, 0, 0));
dlg.add(new JLabel(tr("URL from www.openstreetmap.org (you can paste an URL here to download the area)")),
GBC.eol().insets(10, 5, 5, 0));
dlg.add(tfOsmUrl, GBC.eop().insets(10, 0, 5, 0).fill());
dlg.add(showUrl, GBC.eop().insets(10, 0, 5, 5));
showUrl.setEditable(false);
showUrl.setBackground(dlg.getBackground());
showUrl.addFocusListener(new SelectAllOnFocusHandler(showUrl));
if (gui != null)
gui.addDownloadAreaSelector(dlg, tr("Bounding Box"));
this.parent = gui;
}
@Override
public void setDownloadArea(Bounds area) {
updateBboxFields(area);
updateUrl(area);
}
/**
* Replies the download area.
* @return The download 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 ex) {
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, this);
updateBboxFields(b);
updateUrl(b);
return true;
}
private void updateBboxFields(Bounds area) {
if (area == null) return;
latlon[0].setText(area.getMin().latToString(CoordinateFormat.DECIMAL_DEGREES));
latlon[1].setText(area.getMin().lonToString(CoordinateFormat.DECIMAL_DEGREES));
latlon[2].setText(area.getMax().latToString(CoordinateFormat.DECIMAL_DEGREES));
latlon[3].setText(area.getMax().lonToString(CoordinateFormat.DECIMAL_DEGREES));
for (JosmTextField tf: latlon) {
resetErrorMessage(tf);
}
}
private void updateUrl(Bounds area) {
if (area == null) return;
showUrl.setText(OsmUrlToBounds.getURL(area));
}
private final Border errorBorder = BorderFactory.createLineBorder(Color.RED, 1);
protected void setErrorMessage(JosmTextField tf, String msg) {
tf.setBorder(errorBorder);
tf.setToolTipText(msg);
}
protected void resetErrorMessage(JosmTextField tf) {
tf.setBorder(UIManager.getBorder("TextField.border"));
tf.setToolTipText(null);
}
class LatValueChecker extends FocusAdapter implements ActionListener {
private final JosmTextField tfLatValue;
LatValueChecker(JosmTextField 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();
}
@Override
public void actionPerformed(ActionEvent e) {
check();
}
}
class LonValueChecker extends FocusAdapter implements ActionListener {
private final JosmTextField tfLonValue;
LonValueChecker(JosmTextField 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();
}
@Override
public void actionPerformed(ActionEvent e) {
check();
}
}
static class SelectAllOnFocusHandler extends FocusAdapter {
private final JTextComponent tfTarget;
SelectAllOnFocusHandler(JTextComponent tfTarget) {
this.tfTarget = tfTarget;
}
@Override
public void focusGained(FocusEvent e) {
tfTarget.selectAll();
}
}
class OsmUrlRefresher implements DocumentListener {
@Override
public void changedUpdate(DocumentEvent e) {
parseURL(parent);
}
@Override
public void insertUpdate(DocumentEvent e) {
parseURL(parent);
}
@Override
public void removeUpdate(DocumentEvent e) {
parseURL(parent);
}
}
class BoundingBoxBuilder extends FocusAdapter implements ActionListener {
protected Bounds build() {
double minlon, minlat, maxlon, maxlat;
try {
minlat = Double.parseDouble(latlon[0].getText().trim());
minlon = Double.parseDouble(latlon[1].getText().trim());
maxlat = Double.parseDouble(latlon[2].getText().trim());
maxlon = 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(minlat, minlon, maxlat, maxlon);
}
protected void refreshBounds() {
Bounds b = build();
parent.boundingBoxChanged(b, BoundingBoxSelection.this);
}
@Override
public void focusLost(FocusEvent e) {
refreshBounds();
}
@Override
public void actionPerformed(ActionEvent e) {
refreshBounds();
}
}
}