| 1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others |
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| 2 | package org.openstreetmap.josm.gui.dialogs; |
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| 3 | |
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| 4 | import static org.openstreetmap.josm.tools.I18n.tr; |
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| 5 | |
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| 6 | import java.awt.BorderLayout; |
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| 7 | import java.awt.Component; |
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| 8 | import java.awt.Dimension; |
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| 9 | import java.awt.GridBagLayout; |
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| 10 | import java.awt.Point; |
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| 11 | import java.awt.event.ActionEvent; |
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| 12 | import java.awt.event.KeyEvent; |
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| 13 | import java.awt.event.MouseEvent; |
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| 14 | import java.util.ArrayList; |
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| 15 | import java.util.Arrays; |
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| 16 | import java.util.LinkedHashSet; |
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| 17 | import java.util.List; |
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| 18 | import java.util.Set; |
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| 19 | |
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| 20 | import javax.swing.AbstractAction; |
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| 21 | import javax.swing.Box; |
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| 22 | import javax.swing.JComponent; |
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| 23 | import javax.swing.JLabel; |
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| 24 | import javax.swing.JPanel; |
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| 25 | import javax.swing.JPopupMenu; |
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| 26 | import javax.swing.JScrollPane; |
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| 27 | import javax.swing.JSeparator; |
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| 28 | import javax.swing.JTree; |
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| 29 | import javax.swing.event.TreeModelEvent; |
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| 30 | import javax.swing.event.TreeModelListener; |
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| 31 | import javax.swing.event.TreeSelectionEvent; |
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| 32 | import javax.swing.event.TreeSelectionListener; |
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| 33 | import javax.swing.tree.DefaultMutableTreeNode; |
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| 34 | import javax.swing.tree.DefaultTreeCellRenderer; |
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| 35 | import javax.swing.tree.DefaultTreeModel; |
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| 36 | import javax.swing.tree.TreePath; |
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| 37 | import javax.swing.tree.TreeSelectionModel; |
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| 38 | |
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| 39 | import org.openstreetmap.josm.Main; |
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| 40 | import org.openstreetmap.josm.command.Command; |
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| 41 | import org.openstreetmap.josm.command.PseudoCommand; |
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| 42 | import org.openstreetmap.josm.data.osm.OsmPrimitive; |
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| 43 | import org.openstreetmap.josm.gui.MapFrame; |
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| 44 | import org.openstreetmap.josm.gui.SideButton; |
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| 45 | import org.openstreetmap.josm.gui.layer.OsmDataLayer; |
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| 46 | import org.openstreetmap.josm.gui.layer.OsmDataLayer.CommandQueueListener; |
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| 47 | import org.openstreetmap.josm.gui.widgets.PopupMenuLauncher; |
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| 48 | import org.openstreetmap.josm.tools.FilteredCollection; |
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| 49 | import org.openstreetmap.josm.tools.GBC; |
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| 50 | import org.openstreetmap.josm.tools.ImageProvider; |
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| 51 | import org.openstreetmap.josm.tools.InputMapUtils; |
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| 52 | import org.openstreetmap.josm.tools.Predicate; |
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| 53 | import org.openstreetmap.josm.tools.Shortcut; |
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| 54 | |
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| 55 | public class CommandStackDialog extends ToggleDialog implements CommandQueueListener { |
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| 56 | |
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| 57 | private DefaultTreeModel undoTreeModel = new DefaultTreeModel(new DefaultMutableTreeNode()); |
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| 58 | private DefaultTreeModel redoTreeModel = new DefaultTreeModel(new DefaultMutableTreeNode()); |
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| 59 | |
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| 60 | private JTree undoTree = new JTree(undoTreeModel); |
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| 61 | private JTree redoTree = new JTree(redoTreeModel); |
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| 62 | |
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| 63 | private UndoRedoSelectionListener undoSelectionListener; |
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| 64 | private UndoRedoSelectionListener redoSelectionListener; |
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| 65 | |
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| 66 | private JScrollPane scrollPane; |
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| 67 | private JSeparator separator = new JSeparator(); |
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| 68 | // only visible, if separator is the top most component |
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| 69 | private Component spacer = Box.createRigidArea(new Dimension(0, 3)); |
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| 70 | |
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| 71 | // last operation is remembered to select the next undo/redo entry in the list |
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| 72 | // after undo/redo command |
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| 73 | private UndoRedoType lastOperation = UndoRedoType.UNDO; |
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| 74 | |
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| 75 | public CommandStackDialog(final MapFrame mapFrame) { |
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| 76 | super(tr("Command Stack"), "commandstack", tr("Open a list of all commands (undo buffer)."), |
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| 77 | Shortcut.registerShortcut("subwindow:commandstack", tr("Toggle: {0}", |
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| 78 | tr("Command Stack")), KeyEvent.VK_O, Shortcut.ALT_SHIFT), 100, true); |
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| 79 | undoTree.addMouseListener(new PopupMenuHandler()); |
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| 80 | undoTree.setRootVisible(false); |
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| 81 | undoTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION); |
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| 82 | undoTree.setShowsRootHandles(true); |
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| 83 | undoTree.expandRow(0); |
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| 84 | undoTree.setCellRenderer(new CommandCellRenderer()); |
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| 85 | undoSelectionListener = new UndoRedoSelectionListener(undoTree); |
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| 86 | undoTree.getSelectionModel().addTreeSelectionListener(undoSelectionListener); |
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| 87 | InputMapUtils.unassignCtrlShiftUpDown(undoTree, JComponent.WHEN_FOCUSED); |
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| 88 | |
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| 89 | redoTree.addMouseListener(new PopupMenuHandler()); |
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| 90 | redoTree.setRootVisible(false); |
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| 91 | redoTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION); |
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| 92 | redoTree.setShowsRootHandles(true); |
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| 93 | redoTree.expandRow(0); |
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| 94 | redoTree.setCellRenderer(new CommandCellRenderer()); |
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| 95 | redoSelectionListener = new UndoRedoSelectionListener(redoTree); |
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| 96 | redoTree.getSelectionModel().addTreeSelectionListener(redoSelectionListener); |
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| 97 | |
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| 98 | JPanel treesPanel = new JPanel(new GridBagLayout()); |
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| 99 | |
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| 100 | treesPanel.add(spacer, GBC.eol()); |
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| 101 | spacer.setVisible(false); |
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| 102 | treesPanel.add(undoTree, GBC.eol().fill(GBC.HORIZONTAL)); |
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| 103 | separator.setVisible(false); |
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| 104 | treesPanel.add(separator, GBC.eol().fill(GBC.HORIZONTAL)); |
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| 105 | treesPanel.add(redoTree, GBC.eol().fill(GBC.HORIZONTAL)); |
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| 106 | treesPanel.add(Box.createRigidArea(new Dimension(0, 0)), GBC.std().weight(0, 1)); |
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| 107 | treesPanel.setBackground(redoTree.getBackground()); |
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| 108 | |
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| 109 | SelectAction selectAction = new SelectAction(); |
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| 110 | wireUpdateEnabledStateUpdater(selectAction, undoTree); |
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| 111 | wireUpdateEnabledStateUpdater(selectAction, redoTree); |
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| 112 | |
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| 113 | UndoRedoAction undoAction = new UndoRedoAction(UndoRedoType.UNDO); |
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| 114 | wireUpdateEnabledStateUpdater(undoAction, undoTree); |
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| 115 | |
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| 116 | UndoRedoAction redoAction = new UndoRedoAction(UndoRedoType.REDO); |
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| 117 | wireUpdateEnabledStateUpdater(redoAction, redoTree); |
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| 118 | |
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| 119 | scrollPane = (JScrollPane)createLayout(treesPanel, true, Arrays.asList(new SideButton[] { |
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| 120 | new SideButton(selectAction), |
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| 121 | new SideButton(undoAction), |
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| 122 | new SideButton(redoAction) |
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| 123 | })); |
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| 124 | |
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| 125 | InputMapUtils.addEnterAction(undoTree, selectAction); |
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| 126 | InputMapUtils.addEnterAction(redoTree, selectAction); |
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| 127 | } |
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| 128 | |
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| 129 | private static class CommandCellRenderer extends DefaultTreeCellRenderer { |
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| 130 | @Override public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) { |
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| 131 | super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus); |
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| 132 | DefaultMutableTreeNode v = (DefaultMutableTreeNode)value; |
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| 133 | if (v.getUserObject() instanceof JLabel) { |
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| 134 | JLabel l = (JLabel)v.getUserObject(); |
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| 135 | setIcon(l.getIcon()); |
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| 136 | setText(l.getText()); |
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| 137 | } |
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| 138 | return this; |
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| 139 | } |
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| 140 | } |
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| 141 | |
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| 142 | /** |
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| 143 | * Selection listener for undo and redo area. |
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| 144 | * If one is clicked, takes away the selection from the other, so |
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| 145 | * it behaves as if it was one component. |
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| 146 | */ |
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| 147 | private class UndoRedoSelectionListener implements TreeSelectionListener { |
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| 148 | private JTree source; |
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| 149 | |
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| 150 | public UndoRedoSelectionListener(JTree source) { |
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| 151 | this.source = source; |
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| 152 | } |
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| 153 | |
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| 154 | public void valueChanged(TreeSelectionEvent e) { |
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| 155 | if (source == undoTree) { |
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| 156 | redoTree.getSelectionModel().removeTreeSelectionListener(redoSelectionListener); |
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| 157 | redoTree.clearSelection(); |
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| 158 | redoTree.getSelectionModel().addTreeSelectionListener(redoSelectionListener); |
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| 159 | } |
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| 160 | if (source == redoTree) { |
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| 161 | undoTree.getSelectionModel().removeTreeSelectionListener(undoSelectionListener); |
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| 162 | undoTree.clearSelection(); |
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| 163 | undoTree.getSelectionModel().addTreeSelectionListener(undoSelectionListener); |
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| 164 | } |
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| 165 | } |
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| 166 | } |
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| 167 | |
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| 168 | /** |
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| 169 | * Interface to provide a callback for enabled state update. |
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| 170 | */ |
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| 171 | protected interface IEnabledStateUpdating { |
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| 172 | void updateEnabledState(); |
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| 173 | } |
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| 174 | |
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| 175 | /** |
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| 176 | * Wires updater for enabled state to the events. |
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| 177 | */ |
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| 178 | protected void wireUpdateEnabledStateUpdater(final IEnabledStateUpdating updater, JTree tree) { |
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| 179 | addShowNotifyListener(updater); |
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| 180 | |
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| 181 | tree.addTreeSelectionListener(new TreeSelectionListener() { |
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| 182 | public void valueChanged(TreeSelectionEvent e) { |
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| 183 | updater.updateEnabledState(); |
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| 184 | } |
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| 185 | }); |
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| 186 | |
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| 187 | tree.getModel().addTreeModelListener(new TreeModelListener() { |
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| 188 | public void treeNodesChanged(TreeModelEvent e) { |
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| 189 | updater.updateEnabledState(); |
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| 190 | } |
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| 191 | |
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| 192 | public void treeNodesInserted(TreeModelEvent e) { |
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| 193 | updater.updateEnabledState(); |
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| 194 | } |
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| 195 | |
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| 196 | public void treeNodesRemoved(TreeModelEvent e) { |
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| 197 | updater.updateEnabledState(); |
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| 198 | } |
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| 199 | |
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| 200 | public void treeStructureChanged(TreeModelEvent e) { |
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| 201 | updater.updateEnabledState(); |
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| 202 | } |
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| 203 | }); |
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| 204 | } |
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| 205 | |
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| 206 | @Override |
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| 207 | public void showNotify() { |
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| 208 | buildTrees(); |
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| 209 | for (IEnabledStateUpdating listener : showNotifyListener) { |
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| 210 | listener.updateEnabledState(); |
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| 211 | } |
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| 212 | Main.main.undoRedo.addCommandQueueListener(this); |
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| 213 | } |
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| 214 | |
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| 215 | /** |
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| 216 | * Simple listener setup to update the button enabled state when the side dialog shows. |
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| 217 | */ |
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| 218 | Set<IEnabledStateUpdating> showNotifyListener = new LinkedHashSet<IEnabledStateUpdating>(); |
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| 219 | |
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| 220 | private void addShowNotifyListener(IEnabledStateUpdating listener) { |
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| 221 | showNotifyListener.add(listener); |
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| 222 | } |
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| 223 | |
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| 224 | @Override |
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| 225 | public void hideNotify() { |
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| 226 | undoTreeModel.setRoot(new DefaultMutableTreeNode()); |
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| 227 | redoTreeModel.setRoot(new DefaultMutableTreeNode()); |
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| 228 | Main.main.undoRedo.removeCommandQueueListener(this); |
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| 229 | } |
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| 230 | |
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| 231 | /** |
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| 232 | * Build the trees of undo and redo commands (initially or when |
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| 233 | * they have changed). |
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| 234 | */ |
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| 235 | private void buildTrees() { |
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| 236 | setTitle(tr("Command Stack")); |
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| 237 | if (Main.map == null || Main.map.mapView == null || Main.map.mapView.getEditLayer() == null) |
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| 238 | return; |
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| 239 | |
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| 240 | List<Command> undoCommands = Main.main.undoRedo.commands; |
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| 241 | DefaultMutableTreeNode undoRoot = new DefaultMutableTreeNode(); |
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| 242 | for (int i=0; i<undoCommands.size(); ++i) { |
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| 243 | undoRoot.add(getNodeForCommand(undoCommands.get(i), i)); |
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| 244 | } |
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| 245 | undoTreeModel.setRoot(undoRoot); |
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| 246 | |
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| 247 | List<Command> redoCommands = Main.main.undoRedo.redoCommands; |
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| 248 | DefaultMutableTreeNode redoRoot = new DefaultMutableTreeNode(); |
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| 249 | for (int i=0; i<redoCommands.size(); ++i) { |
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| 250 | redoRoot.add(getNodeForCommand(redoCommands.get(i), i)); |
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| 251 | } |
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| 252 | redoTreeModel.setRoot(redoRoot); |
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| 253 | if (redoTreeModel.getChildCount(redoRoot) > 0) { |
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| 254 | redoTree.scrollRowToVisible(0); |
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| 255 | scrollPane.getHorizontalScrollBar().setValue(0); |
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| 256 | } |
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| 257 | |
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| 258 | separator.setVisible(!undoCommands.isEmpty() || !redoCommands.isEmpty()); |
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| 259 | spacer.setVisible(undoCommands.isEmpty() && !redoCommands.isEmpty()); |
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| 260 | |
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| 261 | // if one tree is empty, move selection to the other |
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| 262 | switch (lastOperation) { |
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| 263 | case UNDO: |
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| 264 | if (undoCommands.isEmpty()) { |
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| 265 | lastOperation = UndoRedoType.REDO; |
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| 266 | } |
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| 267 | break; |
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| 268 | case REDO: |
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| 269 | if (redoCommands.isEmpty()) { |
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| 270 | lastOperation = UndoRedoType.UNDO; |
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| 271 | } |
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| 272 | break; |
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| 273 | } |
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| 274 | |
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| 275 | // select the next command to undo/redo |
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| 276 | switch (lastOperation) { |
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| 277 | case UNDO: |
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| 278 | undoTree.setSelectionRow(undoTree.getRowCount()-1); |
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| 279 | break; |
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| 280 | case REDO: |
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| 281 | redoTree.setSelectionRow(0); |
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| 282 | break; |
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| 283 | } |
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| 284 | |
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| 285 | undoTree.scrollRowToVisible(undoTreeModel.getChildCount(undoRoot)-1); |
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| 286 | scrollPane.getHorizontalScrollBar().setValue(0); |
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| 287 | } |
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| 288 | |
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| 289 | /** |
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| 290 | * Wraps a command in a CommandListMutableTreeNode. |
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| 291 | * Recursively adds child commands. |
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| 292 | */ |
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| 293 | protected CommandListMutableTreeNode getNodeForCommand(PseudoCommand c, int idx) { |
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| 294 | CommandListMutableTreeNode node = new CommandListMutableTreeNode(c, idx); |
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| 295 | if (c.getChildren() != null) { |
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| 296 | List<PseudoCommand> children = new ArrayList<PseudoCommand>(c.getChildren()); |
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| 297 | for (int i=0; i<children.size(); ++i) { |
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| 298 | node.add(getNodeForCommand(children.get(i), i)); |
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| 299 | } |
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| 300 | } |
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| 301 | return node; |
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| 302 | } |
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| 303 | |
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| 304 | public void commandChanged(int queueSize, int redoSize) { |
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| 305 | if (!isVisible()) |
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| 306 | return; |
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| 307 | buildTrees(); |
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| 308 | } |
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| 309 | |
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| 310 | public class SelectAction extends AbstractAction implements IEnabledStateUpdating { |
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| 311 | |
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| 312 | public SelectAction() { |
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| 313 | super(); |
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| 314 | putValue(NAME,tr("Select")); |
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| 315 | putValue(SHORT_DESCRIPTION, tr("Selects the objects that take part in this command (unless currently deleted)")); |
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| 316 | putValue(SMALL_ICON, ImageProvider.get("dialogs","select")); |
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| 317 | |
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| 318 | } |
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| 319 | |
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| 320 | public void actionPerformed(ActionEvent e) { |
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| 321 | TreePath path; |
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| 322 | undoTree.getSelectionPath(); |
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| 323 | if (!undoTree.isSelectionEmpty()) { |
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| 324 | path = undoTree.getSelectionPath(); |
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| 325 | } else if (!redoTree.isSelectionEmpty()) { |
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| 326 | path = redoTree.getSelectionPath(); |
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| 327 | } else |
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| 328 | throw new IllegalStateException(); |
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| 329 | |
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| 330 | if (Main.map == null || Main.map.mapView == null || Main.map.mapView.getEditLayer() == null) return; |
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| 331 | PseudoCommand c = ((CommandListMutableTreeNode) path.getLastPathComponent()).getCommand(); |
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| 332 | |
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| 333 | final OsmDataLayer currentLayer = Main.map.mapView.getEditLayer(); |
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| 334 | |
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| 335 | FilteredCollection<OsmPrimitive> prims = new FilteredCollection<OsmPrimitive>( |
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| 336 | c.getParticipatingPrimitives(), |
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| 337 | new Predicate<OsmPrimitive>(){ |
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| 338 | public boolean evaluate(OsmPrimitive o) { |
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| 339 | OsmPrimitive p = currentLayer.data.getPrimitiveById(o); |
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| 340 | return p != null && p.isUsable(); |
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| 341 | } |
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| 342 | } |
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| 343 | ); |
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| 344 | Main.map.mapView.getEditLayer().data.setSelected(prims); |
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| 345 | } |
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| 346 | |
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| 347 | public void updateEnabledState() { |
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| 348 | setEnabled(!undoTree.isSelectionEmpty() || !redoTree.isSelectionEmpty()); |
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| 349 | } |
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| 350 | |
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| 351 | } |
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| 352 | |
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| 353 | /** |
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| 354 | * undo / redo switch to reduce duplicate code |
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| 355 | */ |
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| 356 | protected enum UndoRedoType {UNDO, REDO}; |
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| 357 | |
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| 358 | /** |
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| 359 | * Action to undo or redo all commands up to (and including) the seleced item. |
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| 360 | */ |
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| 361 | protected class UndoRedoAction extends AbstractAction implements IEnabledStateUpdating { |
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| 362 | private UndoRedoType type; |
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| 363 | private JTree tree; |
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| 364 | |
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| 365 | /** |
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| 366 | * constructor |
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| 367 | * @param type decide whether it is an undo action or a redo action |
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| 368 | */ |
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| 369 | public UndoRedoAction(UndoRedoType type) { |
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| 370 | super(); |
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| 371 | this.type = type; |
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| 372 | switch (type) { |
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| 373 | case UNDO: |
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| 374 | tree = undoTree; |
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| 375 | putValue(NAME,tr("Undo")); |
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| 376 | putValue(SHORT_DESCRIPTION, tr("Undo the selected and all later commands")); |
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| 377 | putValue(SMALL_ICON, ImageProvider.get("undo")); |
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| 378 | break; |
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| 379 | case REDO: |
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| 380 | tree = redoTree; |
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| 381 | putValue(NAME,tr("Redo")); |
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| 382 | putValue(SHORT_DESCRIPTION, tr("Redo the selected and all earlier commands")); |
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| 383 | putValue(SMALL_ICON, ImageProvider.get("redo")); |
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| 384 | break; |
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| 385 | } |
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| 386 | } |
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| 387 | |
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| 388 | public void actionPerformed(ActionEvent e) { |
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| 389 | lastOperation = type; |
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| 390 | TreePath path = tree.getSelectionPath(); |
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| 391 | |
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| 392 | // we can only undo top level commands |
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| 393 | if (path.getPathCount() != 2) |
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| 394 | throw new IllegalStateException(); |
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| 395 | |
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| 396 | int idx = ((CommandListMutableTreeNode) path.getLastPathComponent()).getIndex(); |
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| 397 | |
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| 398 | // calculate the number of commands to undo/redo; then do it |
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| 399 | switch (type) { |
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| 400 | case UNDO: |
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| 401 | int numUndo = ((DefaultMutableTreeNode) undoTreeModel.getRoot()).getChildCount() - idx; |
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| 402 | Main.main.undoRedo.undo(numUndo); |
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| 403 | break; |
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| 404 | case REDO: |
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| 405 | int numRedo = idx+1; |
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| 406 | Main.main.undoRedo.redo(numRedo); |
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| 407 | break; |
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| 408 | } |
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| 409 | Main.map.repaint(); |
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| 410 | } |
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| 411 | |
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| 412 | public void updateEnabledState() { |
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| 413 | // do not allow execution if nothing is selected or a sub command was selected |
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| 414 | setEnabled(!tree.isSelectionEmpty() && tree.getSelectionPath().getPathCount()==2); |
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| 415 | } |
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| 416 | } |
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| 417 | |
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| 418 | class PopupMenuHandler extends PopupMenuLauncher { |
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| 419 | @Override |
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| 420 | public void launch(MouseEvent evt) { |
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| 421 | Point p = evt.getPoint(); |
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| 422 | JTree tree = (JTree) evt.getSource(); |
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| 423 | int row = tree.getRowForLocation(p.x, p.y); |
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| 424 | if (row != -1) { |
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| 425 | TreePath path = tree.getPathForLocation(p.x, p.y); |
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| 426 | // right click on unselected element -> select it first |
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| 427 | if (!tree.isPathSelected(path)) { |
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| 428 | tree.setSelectionPath(path); |
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| 429 | } |
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| 430 | TreePath[] selPaths = tree.getSelectionPaths(); |
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| 431 | |
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| 432 | CommandStackPopup menu = new CommandStackPopup(selPaths); |
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| 433 | menu.show(tree, p.x, p.y-3); |
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| 434 | } |
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| 435 | } |
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| 436 | } |
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| 437 | |
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| 438 | private class CommandStackPopup extends JPopupMenu { |
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| 439 | private TreePath[] sel; |
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| 440 | public CommandStackPopup(TreePath[] sel){ |
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| 441 | this.sel = sel; |
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| 442 | add(new SelectAction()); |
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| 443 | } |
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| 444 | } |
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| 445 | } |
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