Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / gui / UndoManager.java

diff --git a/src/tim/prune/gui/UndoManager.java b/src/tim/prune/gui/UndoManager.java
new file mode 100644 (file)
index 0000000..b9d9f32
--- /dev/null
+++ b/src/tim/prune/gui/UndoManager.java
@@ -0,0 +1,105 @@
+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);
+       }
+
+}