X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Ffunction%2FDeleteFieldValues.java;fp=src%2Ftim%2Fprune%2Ffunction%2FDeleteFieldValues.java;h=0c0e44f71257532b430acfaa29b90d076bff4e4f;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/function/DeleteFieldValues.java b/src/tim/prune/function/DeleteFieldValues.java
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+++ b/src/tim/prune/function/DeleteFieldValues.java
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+package tim.prune.function;
+
+import java.awt.BorderLayout;
+import java.awt.FlowLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.BorderFactory;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.JList;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.ListSelectionModel;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+
+import tim.prune.App;
+import tim.prune.DataSubscriber;
+import tim.prune.GenericFunction;
+import tim.prune.I18nManager;
+import tim.prune.UpdateMessageBroker;
+import tim.prune.data.Field;
+import tim.prune.data.FieldList;
+import tim.prune.data.Track;
+import tim.prune.undo.UndoDeleteFieldValues;
+
+/**
+ * Class to provide the function to delete the values of a single field
+ * for all points in the current range
+ */
+public class DeleteFieldValues extends GenericFunction
+{
+	private JDialog _dialog = null;
+	private JList<String> _fieldList = null;
+	private FieldListModel _listModel = null;
+	private JButton _okButton = null;
+
+
+	/**
+	 * Constructor
+	 * @param inApp application object for callback
+	 */
+	public DeleteFieldValues(App inApp)
+	{
+		super(inApp);
+	}
+
+	/** Get the name key */
+	public String getNameKey() {
+		return "function.deletefieldvalues";
+	}
+
+	/**
+	 * Begin the function
+	 */
+	public void begin()
+	{
+		// Make dialog window
+		if (_dialog == null)
+		{
+			_dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()), true);
+			_dialog.setLocationRelativeTo(_parentFrame);
+			_dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+			_dialog.getContentPane().add(makeDialogComponents());
+			_dialog.pack();
+		}
+		// refresh the dialog
+		initDialog();
+		// Check whether any fields left
+		if (_listModel.getSize() < 1) {
+			_app.showErrorMessage(getNameKey(), "dialog.deletefieldvalues.nofields");
+		}
+		else {
+			_dialog.setVisible(true);
+		}
+	}
+
+
+	/**
+	 * Create dialog components
+	 * @return Panel containing all gui elements in dialog
+	 */
+	private JPanel makeDialogComponents()
+	{
+		JPanel dialogPanel = new JPanel();
+		dialogPanel.setLayout(new BorderLayout());
+		dialogPanel.add(new JLabel(I18nManager.getText("dialog.deletefieldvalues.intro")), BorderLayout.NORTH);
+		// List in centre
+		_fieldList = new JList<String>(new String[] {"First field", "Second field"});
+		// These entries will be replaced by the initDialog method
+		_fieldList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
+		_fieldList.addListSelectionListener(new ListSelectionListener() {
+			public void valueChanged(ListSelectionEvent e) {
+				_okButton.setEnabled(_fieldList.getSelectedIndex() >= 0);
+			}
+		});
+		dialogPanel.add(new JScrollPane(_fieldList), BorderLayout.CENTER);
+		// button panel at bottom
+		JPanel buttonPanel = new JPanel();
+		buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
+		_okButton = new JButton(I18nManager.getText("button.ok"));
+		ActionListener okListener = new ActionListener() {
+			public void actionPerformed(ActionEvent e)
+			{
+				finish();
+			}
+		};
+		_okButton.addActionListener(okListener);
+		_okButton.setEnabled(false);
+		buttonPanel.add(_okButton);
+		JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
+		cancelButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e)
+			{
+				_dialog.dispose();
+			}
+		});
+		buttonPanel.add(cancelButton);
+		dialogPanel.add(buttonPanel, BorderLayout.SOUTH);
+		dialogPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 15));
+		return dialogPanel;
+	}
+
+	/**
+	 * Initialise the dialog with the field list
+	 */
+	private void initDialog()
+	{
+		_listModel = new FieldListModel();
+		int selStart = _app.getTrackInfo().getSelection().getStart();
+		int selEnd = _app.getTrackInfo().getSelection().getEnd();
+		// Loop over fields in track
+		final Track track = _app.getTrackInfo().getTrack();
+		FieldList fieldsInTrack = track.getFieldList();
+		for (int i=0; i<fieldsInTrack.getNumFields(); i++) {
+			Field field = fieldsInTrack.getField(i);
+			if (field != Field.LATITUDE && field != Field.LONGITUDE
+				&& track.hasData(field, selStart, selEnd))
+			{
+				_listModel.addField(field);
+			}
+		}
+		_fieldList.setModel(_listModel);
+		_fieldList.clearSelection();
+		_okButton.setEnabled(false);
+	}
+
+	/**
+	 * Finish the dialog when OK pressed
+	 */
+	private void finish()
+	{
+		// Complete function
+		Field field = _listModel.getField(_fieldList.getSelectedIndex());
+		if (field != null)
+		{
+			UndoDeleteFieldValues undo = new UndoDeleteFieldValues(_app.getTrackInfo(), field);
+			final int selStart = _app.getTrackInfo().getSelection().getStart();
+			final int selEnd = _app.getTrackInfo().getSelection().getEnd();
+			final Track track = _app.getTrackInfo().getTrack();
+			for (int i=selStart; i<= selEnd; i++) {
+				track.getPoint(i).setFieldValue(field, null, false);
+			}
+			_dialog.dispose();
+			_app.getTrackInfo().getSelection().markInvalid();
+			UpdateMessageBroker.informSubscribers(DataSubscriber.DATA_EDITED);
+			_app.completeFunction(undo, I18nManager.getText("confirm.deletefieldvalues"));
+		}
+	}
+}