X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fgui%2FUndoManager.java;fp=src%2Ftim%2Fprune%2Fgui%2FUndoManager.java;h=b9d9f32993e51adcdb72957f9e5d309822dc811e;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/gui/UndoManager.java b/src/tim/prune/gui/UndoManager.java
new file mode 100644
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+++ b/src/tim/prune/gui/UndoManager.java
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+package tim.prune.gui;
+
+import java.awt.FlowLayout;
+import java.awt.BorderLayout;
+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.JFrame;
+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.I18nManager;
+import tim.prune.undo.UndoStack;
+
+/**
+ * Class to manage the selection of actions to undo
+ */
+public class UndoManager
+{
+	private App _app = null;
+	private JFrame _parentFrame = null;
+	private JDialog _dialog = null;
+	private JList<String> _actionList = null;
+
+
+	/**
+	 * Constructor
+	 * @param inApp App object
+	 * @param inFrame parent frame
+	 */
+	public UndoManager(App inApp, JFrame inFrame)
+	{
+		_app = inApp;
+		_parentFrame = inFrame;
+	}
+
+	/**
+	 * Show the dialog to select which actions to undo
+	 */
+	public void show()
+	{
+		_dialog = new JDialog(_parentFrame, I18nManager.getText("dialog.undo.title"), true);
+		_dialog.setLocationRelativeTo(_parentFrame);
+		JPanel mainPanel = new JPanel();
+		mainPanel.setLayout(new BorderLayout(3, 3));
+		mainPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
+		UndoStack undoStack = _app.getUndoStack();
+		mainPanel.add(new JLabel(I18nManager.getText("dialog.undo.pretext")), BorderLayout.NORTH);
+
+		String[] undoActions = new String[undoStack.size()];
+		for (int i=0; i<undoStack.size(); i++)
+		{
+			undoActions[i] = undoStack.getOperationAt(undoStack.size()-1-i).getDescription();
+		}
+		_actionList = new JList<String>(undoActions);
+		_actionList.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
+		_actionList.setSelectedIndex(0);
+		_actionList.addListSelectionListener(new ListSelectionListener()
+			{
+				public void valueChanged(ListSelectionEvent e)
+				{
+					if (_actionList.getMinSelectionIndex() > 0)
+					{
+						_actionList.setSelectionInterval(0, _actionList.getMaxSelectionIndex());
+					}
+				}
+			});
+		mainPanel.add(new JScrollPane(_actionList), BorderLayout.CENTER);
+		// Buttons
+		JPanel buttonPanel = new JPanel();
+		buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
+		JButton okButton = new JButton(I18nManager.getText("button.ok"));
+		okButton.addActionListener(new ActionListener()
+			{
+				public void actionPerformed(ActionEvent e)
+				{
+					_app.undoActions(_actionList.getMaxSelectionIndex() + 1);
+					_dialog.dispose();
+				}
+			});
+		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);
+		mainPanel.add(buttonPanel, BorderLayout.SOUTH);
+		_dialog.getContentPane().add(mainPanel);
+		_dialog.pack();
+		_dialog.setVisible(true);
+	}
+
+}