/** * @(#)GPSTrackerPlugin.java 29.06.2004 * * Copyright 2004 Edgar Soldin * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package de.soldin.gt2jump.gps; import java.awt.Dimension; import java.awt.Point; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.URL; import java.util.Arrays; import java.util.Collection; import java.util.Collections; import java.util.Comparator; import java.util.Enumeration; import java.util.HashMap; import java.util.Hashtable; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Properties; import java.util.Vector; import javax.comm.CommPortIdentifier; import javax.comm.SerialPort; import javax.comm.SerialPortEvent; import javax.comm.SerialPortEventListener; import javax.comm.UnsupportedCommOperationException; import javax.swing.JButton; import javax.swing.JCheckBoxMenuItem; import javax.swing.JComboBox; import javax.swing.JComponent; import javax.swing.JLabel; import javax.swing.JMenu; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JSlider; import javax.swing.JTextArea; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; import org.swixml.SwingEngine; import com.vividsolutions.jts.geom.Coordinate; import com.vividsolutions.jts.geom.Geometry; import com.vividsolutions.jts.geom.GeometryFactory; import com.vividsolutions.jts.geom.LineSegment; import com.vividsolutions.jts.geom.LineString; import com.vividsolutions.jump.feature.Feature; import com.vividsolutions.jump.feature.FeatureUtil; import com.vividsolutions.jump.util.CoordinateArrays; import com.vividsolutions.jump.workbench.WorkbenchContext; import com.vividsolutions.jump.workbench.model.Layer; import com.vividsolutions.jump.workbench.model.UndoableCommand; import com.vividsolutions.jump.workbench.plugin.AbstractPlugIn; import com.vividsolutions.jump.workbench.plugin.EnableCheck; import com.vividsolutions.jump.workbench.plugin.MultiEnableCheck; import com.vividsolutions.jump.workbench.plugin.PlugIn; import com.vividsolutions.jump.workbench.plugin.PlugInContext; import com.vividsolutions.jump.workbench.ui.GeometryEditor; import com.vividsolutions.jump.workbench.ui.OptionsDialog; import com.vividsolutions.jump.workbench.ui.SelectionManagerProxy; import com.vividsolutions.jump.workbench.ui.Viewport; import com.vividsolutions.jump.workbench.ui.plugin.FeatureInstaller; import de.soldin.gt2jump.UndoableSetGeometry; import de.soldin.gt2jump.cts.WKTCSLoader; /** * Another one size fits all class. It acts as a listener to the * {@link de.soldin.gt2jump.gps.GPSOptionsPanel} and adds functionality * to it. Also it starts/stops the {@link de.soldin.gt2jump.gps.GPSTracker} * for the tracking process. *

* Further on the file includes three other plugins, which are closely related * to the GPSTracker plugin and will only work properly if the * GPSTracker is installed and functional. They are *

*

* PS: ok next time i'll split everything into separate files. word! */ public class GPSTrackerPlugin implements PlugIn, ChangeListener, ItemListener, ActionListener, Comparator, SerialPortEventListener { public static final String NAME = "GPS Tracker"; private WorkbenchContext wbc; private static String TEMPLATES = "de/soldin/gt2jump/gps/"; private SwingEngine swix = new SwingEngine(this); public JSlider sld_update; public JLabel lbl_update; public JPanel p_cts; public JComboBox cbox_processor, cbox_cs_in, cbox_cs_out, cbox_port, cbox_baudrate, cbox_flowcontrol, cbox_databits, cbox_stopbits, cbox_parity; public JScrollPane ta_scroll; public JTextArea ta_output; public JButton btn_test; private JCheckBoxMenuItem menuitem; private InputStream serial_is; //private boolean serial_testing = false; private SerialPort serial_port; private Hashtable gps_dataprocessors, coordinatesystems, portnames, baudrates, flowcontrols, databits, stopbits, parities; private HashMap possibles; private Properties props; private static final String FILE = "gps.conf"; //private FileInputStream file_in; //private FileOutputStream file_out; private GPSTracker gps; public GPSTrackerPlugin() { gps_dataprocessors = new Hashtable(); gps_dataprocessors.put( "NMEA", org.dinopolis.gpstool.gpsinput.nmea.GPSNmeaDataProcessor.class); gps_dataprocessors.put( "Garmin", org.dinopolis.gpstool.gpsinput.garmin.GPSGarminDataProcessor.class); gps_dataprocessors.put( "Sirf", org.dinopolis.gpstool.gpsinput.sirf.GPSSirfDataProcessor.class); try { coordinatesystems = new Hashtable(new WKTCSLoader()); } catch (Exception e) { e.printStackTrace(); } catch (Error e) { // no cts installed } portnames = new Hashtable(); CommPortIdentifier portId; Enumeration en = CommPortIdentifier.getPortIdentifiers(); // iterate through the ports. while (en.hasMoreElements()) { portId = (CommPortIdentifier) en.nextElement(); if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) { portnames.put(portId.getName(), portId); } } baudrates = new Hashtable(); baudrates.put("4800", new Integer(4800)); baudrates.put("9600", new Integer(9600)); flowcontrols = new Hashtable(); flowcontrols.put("None", new Integer(SerialPort.FLOWCONTROL_NONE)); flowcontrols.put( "Xon/Xoff", new Integer(SerialPort.FLOWCONTROL_XONXOFF_IN)); flowcontrols.put("RTS/CTS", new Integer(SerialPort.FLOWCONTROL_RTSCTS_IN)); databits = new Hashtable(); databits.put("8", new Integer(SerialPort.DATABITS_8)); databits.put("7", new Integer(SerialPort.DATABITS_7)); databits.put("6", new Integer(SerialPort.DATABITS_6)); databits.put("5", new Integer(SerialPort.DATABITS_5)); stopbits = new Hashtable(); stopbits.put("1", new Integer(SerialPort.STOPBITS_1)); stopbits.put("1.5", new Integer(SerialPort.STOPBITS_1_5)); stopbits.put("2", new Integer(SerialPort.STOPBITS_2)); parities = new Hashtable(); parities.put("None", new Integer(SerialPort.PARITY_NONE)); parities.put("Even", new Integer(SerialPort.PARITY_EVEN)); parities.put("Odd", new Integer(SerialPort.PARITY_ODD)); parities.put("Mark", new Integer(SerialPort.PARITY_MARK)); parities.put("Space", new Integer(SerialPort.PARITY_SPACE)); this.swix.getTaglib().registerTag("optionspanel", GPSOptionsPanel.class); } public void initialize(PlugInContext context) { this.wbc = context.getWorkbenchContext(); if (this.portnames.isEmpty()) { context.getWorkbenchContext().getErrorHandler().handleThrowable( new Exception("Found no serial ports. Most likely you don't have Java Communication API (correctly) installed. GPSExtension will be disabled for now.")); return; } // insert options panel in OPTIONS dialog try { GPSOptionsPanel panel = (GPSOptionsPanel) swix.render(TEMPLATES + "optionspanel.xml"); initUI(); readFile(); panel.validate(); OptionsDialog d_options = OptionsDialog.instance(context.getWorkbenchContext().getWorkbench()); swix.setActionListener(d_options, this); d_options.addTab(NAME, panel); } catch (Exception e) { context.getWorkbenchContext().getErrorHandler().handleThrowable(e); return; } // insert menu items in VIEW menu context.getFeatureInstaller().addMenuSeparator("View"); context.getFeatureInstaller().addMainMenuItem( this, new String[] { "View" }, getName(), true, null, new MultiEnableCheck()); try { new SetTaskPlugin(this).initialize(context); } catch (Exception e1) { context.getErrorHandler().handleThrowable(e1); } try { new AddPointPlugin(this).initialize(context); } catch (Exception e1) { context.getErrorHandler().handleThrowable(e1); } try { new InsertPointPlugin(this).initialize(context); } catch (Exception e1) { context.getErrorHandler().handleThrowable(e1); } } public boolean execute(PlugInContext context) throws Exception { //System.out.println(getName()+" execute "); context.getLayerManager().getUndoableEditReceiver().reportNothingToUndoYet(); if (isActive()) { //System.out.println("start"); if (gps == null) gps = new GPSTracker(this, context); gps.setViewport(context.getLayerViewPanel().getViewport()); gps.start(); } else { //System.out.println("stop"); if (gps != null) gps.stop(); } return true; } public String getName() { return NAME; } public void setViewport(Viewport vp) { gps.setViewport(vp); } public boolean isActive(Boolean bool) { if (menuitem == null) { FeatureInstaller finster = wbc.createPlugInContext().getFeatureInstaller(); JMenu menu = finster.menuBarMenu("View"); for (int i = 0; i < menu.getItemCount(); i++) { if (menu.getItem(i) == null) continue; if (menu.getItem(i).getText().equals(getName())) { try { menuitem = (JCheckBoxMenuItem) menu.getItem(i); } catch (ClassCastException cexc) { return false; } } } } if (bool != null) menuitem.setSelected(bool.booleanValue()); return menuitem.getSelectedObjects() == null ? false : true; } public boolean isActive() { return isActive(null); } public void initUI() { keysFromMap(cbox_processor, gps_dataprocessors); cbox_processor.addItemListener(this); sld_update.addChangeListener(this); if (coordinatesystems == null || coordinatesystems.isEmpty()) { p_cts.getParent().remove(p_cts); } else { keysFromMap(cbox_cs_in, coordinatesystems); keysFromMap(cbox_cs_out, coordinatesystems); } keysFromMap(cbox_port, portnames); cbox_port.addItemListener(this); keysFromMap(cbox_baudrate, baudrates); cbox_baudrate.addItemListener(this); keysFromMap(cbox_flowcontrol, flowcontrols); cbox_flowcontrol.addItemListener(this); keysFromMap(cbox_databits, databits, true); cbox_databits.addItemListener(this); keysFromMap(cbox_stopbits, stopbits); cbox_stopbits.addItemListener(this); keysFromMap(cbox_parity, parities); cbox_parity.addItemListener(this); swix.setActionListener(btn_test, this); } private void keysFromMap(JComboBox cbox, Map map, boolean reverse) { List keys = new Vector(map.keySet()); Collections.sort(keys, this); if (reverse) Collections.reverse(keys); for (Iterator iter = keys.iterator(); iter.hasNext();) { String name = (String) iter.next(); cbox.addItem(name); } } private void keysFromMap(JComboBox cbox, Map map) { keysFromMap(cbox, map, false); } public void itemStateChanged(ItemEvent e) { //System.out.println(e); } public void actionPerformed(ActionEvent e) { String cmd = e.getActionCommand(); Object src = e.getSource(); //System.out.println(cmd+"\t"+src+"\t"+e); if (src instanceof JButton && cmd.equals("AC_TEST")) { JButton button = (JButton) e.getSource(); if (serial_port == null /*button.getText().equalsIgnoreCase("Test Settings")*/ ) { try { openConnection(); } catch (Exception e1) { wbc.getErrorHandler().handleThrowable(e1); closeConnection(); //e1.printStackTrace(); } } else { closeConnection(); } } else if (src instanceof JButton && cmd.equals("OK")) { if (gps!=null && isActive()) gps.restart(); closeConnection(); writeFile(); } else if (src instanceof JButton && cmd.equals("Cancel")) { closeConnection(); } } public void stateChanged(ChangeEvent e) { if (e.getSource().equals(sld_update)) lbl_update.setText( "Update every " + ((JSlider) e.getSource()).getValue() + "s"); } public int compare(Object o1, Object o2) { if (o1.toString().equalsIgnoreCase("none")) return -1; if (o2.toString().equalsIgnoreCase("none")) return +1; return o1.toString().compareTo(o2.toString()); } public void serialEvent(SerialPortEvent e) { // Create a StringBuffer and int to receive input data. StringBuffer inputBuffer = new StringBuffer(); int newData = 0; // Determine type of event. switch (e.getEventType()) { // Read data until -1 is returned. If \r is received substitute // \n for correct newline handling. case SerialPortEvent.DATA_AVAILABLE : //while (newData != -1) { try { do { //newData = serial_is.read(); if (newData == -1) { addToOutput(inputBuffer.toString()); break; } else if ('\r' == (char) newData || '\n' == (char) newData) { if (inputBuffer.length() > 0) { addToOutput(inputBuffer.toString() + "\n"); inputBuffer = new StringBuffer(); } } else { inputBuffer.append((char) newData); } } while ((newData = serial_is.read()) != -1); } catch (IOException ex) { System.err.println(ex); return; } // Append received data to messageAreaIn. //ta_output.append(new String(inputBuffer).replaceAll("[\n]{2}","\n")); //Dimension dim = ta_output.size(); //ta_scroll.getViewport().setViewPosition(new Point(ta_scroll.getViewport().getViewPosition().x,dim.height)); //((JScrollPane)ta_output.getParent()).getViewport().set break; } } private void addToOutput(String text) { ta_output.append(text); Dimension dim = ta_output.size(); ta_scroll.getViewport().setViewPosition( new Point(ta_scroll.getViewport().getViewPosition().x, dim.height)); } public void openConnection() throws Exception { try { // Obtain a CommPortIdentifier object for the port you want to open. CommPortIdentifier portId = (CommPortIdentifier) portnames.get(cbox_port.getSelectedItem()); // Open the port represented by the CommPortIdentifier object. Give // the open call a relatively long timeout of 30 seconds to allow // a different application to reliquish the port if the user // wants to. serial_port = (SerialPort) portId.open(getName(), 30000); int baudrate = Integer.parseInt((String) cbox_baudrate.getSelectedItem()); int databit = ((Integer) databits.get(cbox_databits.getSelectedItem())).intValue(); int stopbit = ((Integer) stopbits.get(cbox_stopbits.getSelectedItem())).intValue(); int parity = ((Integer) parities.get(cbox_parity.getSelectedItem())).intValue(); serial_port.setSerialPortParams(baudrate, databit, stopbit, parity); serial_port.setFlowControlMode( ((Integer) flowcontrols.get(cbox_flowcontrol.getSelectedItem())) .intValue()); // Open the input and output streams for the connection. If they won't // open, close the port before throwing an exception. serial_is = serial_port.getInputStream(); // Set notifyOnDataAvailable to true to allow event driven input. serial_port.notifyOnDataAvailable(true); // Set notifyOnBreakInterrup to allow event driven break handling. serial_port.notifyOnBreakInterrupt(true); // Set receive timeout to allow breaking out of polling loop during // input handling. try { serial_port.enableReceiveTimeout(30); } catch (UnsupportedCommOperationException e) { } ta_output.setText(""); serial_port.addEventListener(this); btn_test.setText("Stop Test"); //serial_testing = true; } catch (Exception e) { serial_port.close(); //throw new Exception("Error opening i/o streams"); throw e; } } public void closeConnection() { // Check to make sure sPort has reference to avoid a NPE. if (serial_port != null) { serial_port.removeEventListener(); try { // close the i/o streams. serial_is.close(); } catch (IOException e) { System.err.println(e); } // Close the port. serial_port.close(); serial_port = null; } btn_test.setText("Test Settings"); //serial_testing = false; } private void writeFile() { String value = (String) cbox_processor.getSelectedItem(); if (value != null) props.put("processor", value); value = new Integer(sld_update.getValue()).toString(); props.put("update", value); value = (String) cbox_cs_in.getSelectedItem(); if (value != null) props.put("cs_in", value); value = (String) cbox_cs_out.getSelectedItem(); if (value != null) props.put("cs_out", value); value = (String) cbox_port.getSelectedItem(); if (value != null) props.put("portname", value); value = (String) cbox_baudrate.getSelectedItem(); if (value != null) props.put("baudrate", value); value = (String) cbox_flowcontrol.getSelectedItem(); if (value != null) props.put("flowctrl", value); value = (String) cbox_parity.getSelectedItem(); if (value != null) props.put("parity", value); value = (String) cbox_databits.getSelectedItem(); if (value != null) props.put("databits", value); value = (String) cbox_stopbits.getSelectedItem(); if (value != null) props.put("stopbits", value); try { URL url = ClassLoader.getSystemResource(FILE); if (url == null) throw new FileNotFoundException( "Can't find settings file '" + FILE + "' for plugin '" + NAME + "'. Hint: Put it in the classpath!"); File file = new File(url.getPath()); //FileInputStream file_in = new FileInputStream(file); FileOutputStream file_out = new FileOutputStream(file); props.store(file_out, getName() + " Settings"); file_out.close(); } catch (Exception e) { wbc.getErrorHandler().handleThrowable(e); } } private void readFile() { props = new Properties(); try { URL url = ClassLoader.getSystemResource(FILE); if (url == null) throw new FileNotFoundException( "Can't find settings file '" + FILE + "' for plugin '" + NAME + "'. Hint: Put it in the classpath!"); File file = new File(url.getPath()); FileInputStream file_in = new FileInputStream(file); props.load(file_in); file_in.close(); String foo = (String) props.get("processor"); if (foo != null) cbox_processor.setSelectedItem(foo); foo = (String) props.get("update"); if (foo != null) sld_update.setValue(Integer.parseInt(foo)); foo = (String) props.get("cs_in"); if (foo != null) cbox_cs_in.setSelectedItem(foo); foo = (String) props.get("cs_out"); if (foo != null) cbox_cs_out.setSelectedItem(foo); foo = (String) props.get("portname"); if (foo != null) cbox_port.setSelectedItem(foo); foo = (String) props.get("baudrate"); if (foo != null) cbox_baudrate.setSelectedItem(foo); foo = (String) props.get("flowctrl"); if (foo != null) cbox_flowcontrol.setSelectedItem(foo); foo = (String) props.get("parity"); if (foo != null) cbox_parity.setSelectedItem(foo); foo = (String) props.get("databits"); if (foo != null) cbox_databits.setSelectedItem(foo); foo = (String) props.get("stopbits"); if (foo != null) cbox_stopbits.setSelectedItem(foo); } catch (Exception e) { wbc.getErrorHandler().handleThrowable(e); } } public Object getSetting(String key) { //System.out.println("plugin::getSetting() "+key); if (props != null) { try { if (key.equalsIgnoreCase("processor")) return gps_dataprocessors.get(props.getProperty(key)); else if ( (key.equalsIgnoreCase("cs_in") || key.equalsIgnoreCase("cs_out")) && coordinatesystems != null) return coordinatesystems.get(props.getProperty(key)); else return props.getProperty(key); } catch (NullPointerException e) { wbc.getErrorHandler().handleThrowable( new Exception( "Missing Setting for '" + getName() + "'. Check settings under Edit->Options->" + getName() + ".")); return null; } } else return null; } public Coordinate getCurrentCoordinate(){ /* Viewport viewport = this.wbc.getLayerViewPanel().getViewport(); Envelope current = viewport.getEnvelopeInModelCoordinates(); double width = current.getWidth(); double height = current.getHeight(); return new Coordinate(current.getMinX()+(width/2),current.getMinY()+(height/2)); */ if (isActive() && gps!=null) return gps.getPosition(); else return null; } } class SetTaskPlugin extends AbstractPlugIn //implements PlugIn { private static String NAME = "Set Task to track"; private GPSTrackerPlugin plugin; public SetTaskPlugin(GPSTrackerPlugin plugin) { this.plugin = plugin; } public void initialize(PlugInContext context) throws Exception { context.getFeatureInstaller().addMainMenuItem( this, new String[] { "View" }, NAME, false, null, createEnableCheck()); } public boolean execute(PlugInContext context) throws Exception { context.getLayerManager().getUndoableEditReceiver().reportNothingToUndoYet(); plugin.setViewport(context.getLayerViewPanel().getViewport()); return true; } public String getName() { return NAME; } public EnableCheck createEnableCheck() { return new EnableCheck() { public String check(JComponent component) { return (plugin.isActive()) ? null : plugin.getName() + " must be active!"; } }; } } class AddPointPlugin extends AbstractPlugIn { protected String NAME = "Add Point from GPS"; protected GPSTrackerPlugin plugin; protected WorkbenchContext wbc; // force the use of super(GPSTrackerPlugin) private AddPointPlugin(){} public AddPointPlugin(GPSTrackerPlugin plugin) { this.plugin = plugin; } public void initialize(PlugInContext context) throws Exception { this.wbc = context.getWorkbenchContext(); context.getFeatureInstaller().addMainMenuItem( this, new String[] { "Edit" }, NAME, false, null, createEnableCheck(context)); } public boolean execute(PlugInContext context) throws Exception { context.getLayerManager().getUndoableEditReceiver().reportNothingToUndoYet(); Coordinate coord = plugin.getCurrentCoordinate(); if (coord==null){ context.getLayerViewPanel().getContext().warnUser("Problem: No coordinate from GPS!"); return false; } if (!getFeatures().isEmpty()){ if (getFeatures().size()>1) context.getLayerViewPanel().getContext().warnUser("More than 1 features selected. Add point to the first one."); Feature feature = (Feature)getFeatures().toArray()[0]; Geometry geom = feature.getGeometry(); if (!(geom instanceof LineString)) context.getLayerViewPanel().getContext().warnUser("Attention: Converted features geometry to linestring for adding points."); UndoableSetGeometry action = new UndoableSetGeometry((Layer)getLayers().toArray()[0], getName()); Geometry geom_new; GeometryFactory factory = new GeometryFactory(); Coordinate[] coords = geom.getCoordinates(); Coordinate[] coords_new = new Coordinate[coords.length+1]; System.arraycopy(coords,0,coords_new,0,coords.length); coords_new[coords_new.length-1] = coord; geom_new = factory.createLineString(coords_new); action.setGeom(feature,geom_new); action.execute(); wbc.getLayerManager().getUndoableEditReceiver().receive(action); }else if (!getLayers().isEmpty()){ final Layer layer = (Layer)getLayers().iterator().next(); //System.out.print("L: "+layer); GeometryFactory factory = new GeometryFactory(); Geometry geom = factory.createPoint(coord); final Feature feature = FeatureUtil.toFeature(geom,layer.getFeatureCollectionWrapper().getFeatureSchema()); UndoableCommand action = new UndoableCommand(getName()) { public void execute() { layer.getFeatureCollectionWrapper().add(feature); } public void unexecute() { layer.getFeatureCollectionWrapper().remove(feature); } }; action.execute(); wbc.getLayerManager().getUndoableEditReceiver().receive(action.toUndoableEdit()); }else{ context.getLayerViewPanel().getContext().warnUser("No layer or feature selected to add point."); return false; } return true; } public String getName() { return NAME; } public EnableCheck createEnableCheck(PlugInContext context) { MultiEnableCheck checker = new MultiEnableCheck(); // is plugin active? checker.add( new EnableCheck() { public String check(JComponent component) { return (plugin.isActive()) ? null : plugin.getName() + " must be active!"; } } ); MultiEnableCheck checker2 = new MultiEnableCheck(); // is a layer or feature selected? checker2.add( new EnableCheck() { public String check(JComponent component) { boolean layerok = (getLayers().size() == 1); boolean featureok = (getFeatures().size() == 1); return (layerok || featureok) ? null :"Exactly one layer must be selected to add a feature from GPS. \n" + "OR \n" + "Exactly one feature in one layer must be selected to add a point from GPS."; } } ); // is selected (features) layer editable? checker2.add( new EnableCheck() { public String check(JComponent component) { boolean editable = ((Layer)getLayers().iterator().next()).isEditable(); return (editable) ? null :"Selected layer is not editable."; } } ); checker.add(checker2); return checker; } protected Collection getFeatures(){ return ((SelectionManagerProxy) wbc.getWorkbench().getFrame().getActiveInternalFrame()) .getSelectionManager().getFeatureSelection().getFeaturesWithSelectedItems(); } protected Collection getLayers(){ // all layers with selected items (parts of geometries) Collection layers = ((SelectionManagerProxy) wbc.getWorkbench().getFrame().getActiveInternalFrame()) .getSelectionManager().getFeatureSelection().getLayersWithSelectedItems(); return layers.isEmpty() ? Arrays.asList(wbc.getLayerNamePanel().getSelectedLayers()) : layers; } } class InsertPointPlugin extends AddPointPlugin { public InsertPointPlugin(GPSTrackerPlugin plugin) { super(plugin); NAME = "Insert Point from GPS"; } public boolean execute(PlugInContext context) throws Exception { context.getLayerManager().getUndoableEditReceiver().reportNothingToUndoYet(); Coordinate coord = plugin.getCurrentCoordinate(); if (coord==null){ context.getLayerViewPanel().getContext().warnUser("Problem: No coordinate from GPS!"); return false; } if (!getFeatures().isEmpty()){ if (getFeatures().size()>1) context.getLayerViewPanel().getContext().warnUser("More than 1 features selected. Add point to the first one."); Feature feature = (Feature)getFeatures().toArray()[0]; Geometry geom = feature.getGeometry(); if (geom instanceof com.vividsolutions.jts.geom.Point || geom instanceof com.vividsolutions.jts.geom.MultiPoint){ context.getLayerViewPanel().getContext().warnUser("Selected geometry must not be a point or multipoint."); return false; } UndoableSetGeometry action = new UndoableSetGeometry((Layer)getLayers().toArray()[0], getName()); Geometry geom_new; // for Point and Multipoint the check will always produce null // so I took care that tehy'll treated in the else condition LineSegment line = segmentInRange(geom,coord); if (geom.getCoordinates().length>1 && line!=null){ Geometry geom_orig = action.getGeom(feature); geom_new = new GeometryEditor().insertVertex(geom_orig, line.p0, line.p1, coord); }else { context.getLayerViewPanel().getContext().warnUser("Selected geometry consists of less than 2 points, or ."); return false; } action.setGeom(feature,geom_new); action.execute(); wbc.getLayerManager().getUndoableEditReceiver().receive(action); }else{ context.getLayerViewPanel().getContext().warnUser("Problem: No feature selected!"); return false; } return true; } public EnableCheck createEnableCheck(PlugInContext context) { MultiEnableCheck checker = new MultiEnableCheck(); // is plugin active? checker.add( new EnableCheck() { public String check(JComponent component) { return (plugin.isActive()) ? null : plugin.getName() + " must be active!"; } } ); MultiEnableCheck checker2 = new MultiEnableCheck(); // is a layer or feature selected? checker2.add( new EnableCheck() { public String check(JComponent component) { boolean featureok = (getFeatures().size() == 1); return (featureok) ? null : "Exactly one feature in one layer must be selected to insert a point from GPS."; } } ); // is selected (features) layer editable? checker2.add( new EnableCheck() { public String check(JComponent component) { boolean editable = ((Layer)getLayers().iterator().next()).isEditable(); return (editable) ? null :"Selected layer is not editable."; } } ); checker.add(checker2); return checker; } protected LineSegment segmentInRange(Geometry geometry, Coordinate target) { LineSegment closest = null; //CoordinateArray ignores Point and Multipoint, for obvious reasons List coordArrays = CoordinateArrays.toCoordinateArrays(geometry, false); for (Iterator i = coordArrays.iterator(); i.hasNext();) { Coordinate[] coordinates = (Coordinate[]) i.next(); for (int j = 1; j < coordinates.length; j++) { //1 LineSegment candidate = new LineSegment(coordinates[j - 1], coordinates[j]); if ((closest == null) || (candidate.distance(target) < closest.distance(target))) { closest = candidate; } } } return closest; } }