/*
* uDig - User Friendly Desktop Internet GIS client
* (C) MangoSystem - www.mangosystem.com
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the Refractions BSD
* License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
*/
package org.locationtech.udig.processingtoolbox.internal.ui;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.geotools.data.Parameter;
import org.geotools.referencing.CRS;
import org.geotools.util.logging.Logging;
import org.locationtech.udig.processingtoolbox.ToolboxPlugin;
import org.locationtech.udig.processingtoolbox.internal.Messages;
import org.locationtech.udig.project.ILayer;
import org.locationtech.udig.project.IMap;
import org.locationtech.udig.ui.CRSChooserDialog;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.NoSuchAuthorityCodeException;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
/**
* Coordinate Reference System control
*
* @author Minpa Lee, MangoSystem
*
* @source $URL$
*/
public class CrsWidget extends AbstractToolboxWidget {
protected static final Logger LOGGER = Logging.getLogger(CrsWidget.class);
private IMap map;
private Text txtCrs;
public CrsWidget(IMap map) {
this.map = map;
}
public void create(final Composite parent, final int style,
final Map<String, Object> processParams, final Parameter<?> param) {
composite = new Composite(parent, style);
composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1));
GridLayout layout = new GridLayout(2, false);
layout.marginTop = 0;
layout.marginBottom = 0;
layout.marginLeft = 0;
layout.marginRight = 0;
layout.marginWidth = 0;
layout.marginHeight = 0;
layout.horizontalSpacing = 0;
layout.verticalSpacing = 0;
composite.setLayout(layout);
txtCrs = widget.createText(composite, null, 1);
txtCrs.setData(param.key);
if (param.sample != null) {
txtCrs.setText(param.sample.toString());
}
final Color oldBackColor = txtCrs.getBackground();
txtCrs.addModifyListener(new ModifyListener() {
@Override
public void modifyText(ModifyEvent e) {
try {
final String epsgCode = txtCrs.getText();
if (epsgCode != null && epsgCode.length() > 0) {
CoordinateReferenceSystem crs = CRS.decode(epsgCode);
if (crs != null) {
processParams.put(param.key, crs);
txtCrs.setBackground(oldBackColor);
} else {
txtCrs.setBackground(warningColor);
}
} else {
txtCrs.setBackground(oldBackColor);
}
} catch (NoSuchAuthorityCodeException e1) {
LOGGER.log(Level.FINER, e1.getMessage(), e1);
processParams.put(param.key, null);
txtCrs.setBackground(warningColor);
} catch (FactoryException e1) {
LOGGER.log(Level.FINER, e1.getMessage(), e1);
processParams.put(param.key, null);
txtCrs.setBackground(warningColor);
}
}
});
Button btnOpen = widget.createButton(composite, null, null, 1);
Image helpImage = ToolboxPlugin.getImageDescriptor("icons/help.gif").createImage(); //$NON-NLS-1$
btnOpen.setImage(helpImage);
btnOpen.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent event) {
// create popup menu
Shell shell = parent.getShell();
Menu popupMenu = new Menu(shell, SWT.POP_UP);
// 1. CRS from current map
MenuItem mapMenuItem = new MenuItem(popupMenu, SWT.PUSH);
mapMenuItem.setText(Messages.CrsViewer_MapCRS);
mapMenuItem.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent event) {
CoordinateReferenceSystem selectedCrs = map.getViewportModel().getCRS();
try {
if (selectedCrs != null) {
txtCrs.setText(CRS.lookupIdentifier(selectedCrs, true));
processParams.put(param.key, selectedCrs);
}
} catch (FactoryException e) {
txtCrs.setText(EMPTY);
}
}
});
// 2. CRS from layers
MenuItem layerMenuItem = new MenuItem(popupMenu, SWT.CASCADE);
layerMenuItem.setText(Messages.CrsViewer_LayerCRS);
Menu subMenu = new Menu(shell, SWT.DROP_DOWN);
layerMenuItem.setMenu(subMenu);
for (ILayer layer : map.getMapLayers()) {
if (layer.getName() == null) {
continue;
}
MenuItem mnuLayer = new MenuItem(subMenu, SWT.PUSH);
mnuLayer.setText(layer.getName());
mnuLayer.setData(layer);
mnuLayer.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent event) {
ILayer layer = (ILayer) event.widget.getData();
CoordinateReferenceSystem selectedCrs = layer.getCRS();
try {
if (selectedCrs != null) {
txtCrs.setText(CRS.lookupIdentifier(selectedCrs, true));
processParams.put(param.key, selectedCrs);
}
} catch (FactoryException e) {
txtCrs.setText(EMPTY);
}
}
});
}
// 3. CRS Chooser Dialog
MenuItem crsMenuItem = new MenuItem(popupMenu, SWT.PUSH);
crsMenuItem.setText(Messages.CrsViewer_CRSDialog);
crsMenuItem.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent event) {
CoordinateReferenceSystem crs = null;
if (param.key != null) {
crs = (CoordinateReferenceSystem) processParams.get(param.key);
}
CRSChooserDialog dialog = new CRSChooserDialog(parent.getShell(), crs);
if (dialog.open() == Window.OK) {
CoordinateReferenceSystem selectedCrs = dialog.getResult();
try {
if (selectedCrs != null) {
txtCrs.setText(CRS.lookupIdentifier(selectedCrs, true));
processParams.put(param.key, selectedCrs);
}
} catch (FactoryException e) {
txtCrs.setText(EMPTY);
}
}
}
});
// 4. location of popup menu
Control ctrl = (Control) event.widget;
Point loc = ctrl.getLocation();
Rectangle rect = ctrl.getBounds();
Point pos = new Point(loc.x - 1, loc.y + rect.height);
popupMenu.setLocation(shell.getDisplay().map(ctrl.getParent(), null, pos));
popupMenu.setVisible(true);
}
});
composite.pack();
}
}