source: josm/trunk/src/org/openstreetmap/josm/actions/AbstractMergeAction.java@ 2484

Last change on this file since 2484 was 2343, checked in by Gubaer, 14 years ago

fixed #3792: NPE when deleting the data layer while the deletion tool is active

File size: 3.2 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.actions;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.Component;
7import java.awt.GridBagLayout;
8import java.util.List;
9
10import javax.swing.DefaultComboBoxModel;
11import javax.swing.DefaultListCellRenderer;
12import javax.swing.Icon;
13import javax.swing.JComboBox;
14import javax.swing.JLabel;
15import javax.swing.JList;
16import javax.swing.JOptionPane;
17import javax.swing.JPanel;
18
19import org.openstreetmap.josm.Main;
20import org.openstreetmap.josm.gui.ExtendedDialog;
21import org.openstreetmap.josm.gui.layer.Layer;
22import org.openstreetmap.josm.tools.GBC;
23import org.openstreetmap.josm.tools.Shortcut;
24
25public abstract class AbstractMergeAction extends JosmAction {
26
27
28 /**
29 * the list cell renderer used to render layer list entries
30 *
31 */
32 static public class LayerListCellRenderer extends DefaultListCellRenderer {
33
34 protected boolean isActiveLayer(Layer layer) {
35 if (Main.isDisplayingMapView()) return false;
36 return Main.map.mapView.getActiveLayer() == layer;
37 }
38
39 @Override
40 public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected,
41 boolean cellHasFocus) {
42 Layer layer = (Layer) value;
43 JLabel label = (JLabel) super.getListCellRendererComponent(list, layer.getName(), index, isSelected,
44 cellHasFocus);
45 Icon icon = layer.getIcon();
46 label.setIcon(icon);
47 label.setToolTipText(layer.getToolTipText());
48 return label;
49 }
50 }
51
52 public AbstractMergeAction() {
53 super();
54 }
55
56 public AbstractMergeAction(String name, String iconName, String tooltip, Shortcut shortcut, boolean register) {
57 super(name, iconName, tooltip, shortcut, register);
58 }
59
60 protected Layer askTargetLayer(List<Layer> targetLayers) {
61 JComboBox layerList = new JComboBox();
62 layerList.setRenderer(new LayerListCellRenderer());
63 layerList.setModel(new DefaultComboBoxModel(targetLayers.toArray()));
64 layerList.setSelectedIndex(0);
65
66 JPanel pnl = new JPanel();
67 pnl.setLayout(new GridBagLayout());
68 pnl.add(new JLabel(tr("Please select the target layer.")), GBC.eol());
69 pnl.add(layerList, GBC.eol());
70
71 ExtendedDialog ed = new ExtendedDialog(Main.parent,
72 tr("Select target layer"),
73 new String[] { tr("Merge"), tr("Cancel") });
74 ed.setButtonIcons(new String[] { "dialogs/mergedown", "cancel" });
75 ed.setContent(pnl);
76 ed.showDialog();
77 if (ed.getValue() != 1)
78 return null;
79
80 Layer targetLayer = (Layer) layerList.getSelectedItem();
81 return targetLayer;
82 }
83
84 protected void warnNoTargetLayersForSourceLayer(Layer sourceLayer) {
85 JOptionPane.showMessageDialog(Main.parent,
86 tr("<html>There are no layers the source layer<br>''{0}''<br>could be merged to.</html>"),
87 tr("No target layers"), JOptionPane.WARNING_MESSAGE);
88 }
89}
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