[8409] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[14186] | 3 | * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[8409] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Drawing;
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| 24 | using System.Linq;
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| 25 | using System.Windows.Forms;
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| 26 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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| 27 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Views;
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| 28 |
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| 29 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic.Views {
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[9006] | 30 | internal delegate void
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[9043] | 31 | ModifyTree(ISymbolicExpressionTree tree, ISymbolicExpressionTreeNode node, ISymbolicExpressionTreeNode oldChild, ISymbolicExpressionTreeNode newChild, bool removeSubtree = true);
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[9006] | 32 |
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| 33 | internal sealed partial class InteractiveSymbolicExpressionTreeChart : SymbolicExpressionTreeChart {
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[8980] | 34 | private ISymbolicExpressionTreeNode tempNode; // node in clipboard (to be cut/copy/pasted etc)
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[11120] | 35 | private VisualTreeNode<ISymbolicExpressionTreeNode> currSelected; // currently selected node
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[9043] | 36 | private enum EditOp { NoOp, CopySubtree, CutSubtree }
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[8409] | 37 | private EditOp lastOp = EditOp.NoOp;
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| 38 |
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[9006] | 39 | // delegate to notify the parent container (the view) about the tree edit operations that it needs to perform
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| 40 | public ModifyTree ModifyTree { get; set; }
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[8980] | 41 |
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[8409] | 42 | public InteractiveSymbolicExpressionTreeChart() {
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| 43 | InitializeComponent();
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| 44 | currSelected = null;
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| 45 | tempNode = null;
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| 46 | }
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| 47 |
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| 48 | private void contextMenuStrip_Opened(object sender, EventArgs e) {
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[8980] | 49 | var menuStrip = (ContextMenuStrip)sender;
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| 50 | var point = menuStrip.SourceControl.PointToClient(Cursor.Position);
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| 51 | var ea = new MouseEventArgs(MouseButtons.Left, 1, point.X, point.Y, 0);
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[9006] | 52 | var visualNode = FindVisualSymbolicExpressionTreeNodeAt(ea.X, ea.Y);
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[9043] | 53 | if (visualNode != null) {
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| 54 | OnSymbolicExpressionTreeNodeClicked(visualNode, ea);
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| 55 | } else {
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| 56 | currSelected = null;
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| 57 | }
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[8980] | 58 |
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[8935] | 59 | if (currSelected == null) {
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| 60 | insertNodeToolStripMenuItem.Visible = false;
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[8991] | 61 | changeNodeToolStripMenuItem.Visible = false;
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[8935] | 62 | copyToolStripMenuItem.Visible = false;
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| 63 | cutToolStripMenuItem.Visible = false;
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[8991] | 64 | removeToolStripMenuItem.Visible = false;
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[8935] | 65 | pasteToolStripMenuItem.Visible = false;
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[8409] | 66 | } else {
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[11120] | 67 | var node = currSelected.Content;
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[8991] | 68 | insertNodeToolStripMenuItem.Visible = true;
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| 69 | changeNodeToolStripMenuItem.Visible = true;
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| 70 | changeNodeToolStripMenuItem.Enabled = (node is SymbolicExpressionTreeTerminalNode);
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| 71 | insertNodeToolStripMenuItem.Enabled = !changeNodeToolStripMenuItem.Enabled;
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[8935] | 72 | copyToolStripMenuItem.Visible = true;
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| 73 | cutToolStripMenuItem.Visible = true;
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[8991] | 74 | removeToolStripMenuItem.Visible = true;
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[9056] | 75 |
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[8991] | 76 | pasteToolStripMenuItem.Visible = true;
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[9056] | 77 | pasteToolStripMenuItem.Enabled = tempNode != null && insertNodeToolStripMenuItem.Enabled
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[11150] | 78 | && !(lastOp == EditOp.CutSubtree && tempNode.IterateNodesBreadth().Contains(node))
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| 79 | && node.SubtreeCount < node.Symbol.MaximumArity;
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[8409] | 80 | }
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| 81 | }
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| 82 |
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[8935] | 83 | protected override void OnSymbolicExpressionTreeNodeClicked(object sender, MouseEventArgs e) {
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[11120] | 84 | currSelected = (VisualTreeNode<ISymbolicExpressionTreeNode>)sender; ;
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[9055] | 85 | base.OnSymbolicExpressionTreeNodeClicked(sender, e);
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[8409] | 86 | }
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| 87 |
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[8980] | 88 | protected override void OnSymbolicExpressionTreeNodeDoubleClicked(object sender, MouseEventArgs e) {
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[9006] | 89 | currSelected = null;
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| 90 | base.OnSymbolicExpressionTreeNodeDoubleClicked(sender, e);
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[8980] | 91 | }
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| 92 |
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[11416] | 93 |
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| 94 | private static readonly ISymbolicExpressionGrammar grammar = new TypeCoherentExpressionGrammar();
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[8409] | 95 | private void insertNodeToolStripMenuItem_Click(object sender, EventArgs e) {
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[11120] | 96 | if (currSelected == null || currSelected.Content is SymbolicExpressionTreeTerminalNode) return;
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| 97 | var parent = currSelected.Content;
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[8409] | 98 |
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[8935] | 99 | using (var dialog = new InsertNodeDialog()) {
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[11416] | 100 | dialog.SetAllowedSymbols(grammar.Symbols.Where(s => !(s is ProgramRootSymbol || s is StartSymbol || s is Defun || s is GroupSymbol))); // allow everything
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[8935] | 101 | dialog.ShowDialog(this);
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[9006] | 102 | if (dialog.DialogResult != DialogResult.OK) return;
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[8980] | 103 |
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[9006] | 104 | var symbol = dialog.SelectedSymbol();
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| 105 | var node = symbol.CreateTreeNode();
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| 106 | if (node is ConstantTreeNode) {
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| 107 | var constant = node as ConstantTreeNode;
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| 108 | constant.Value = double.Parse(dialog.constantValueTextBox.Text);
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| 109 | } else if (node is VariableTreeNode) {
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| 110 | var variable = node as VariableTreeNode;
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| 111 | variable.Weight = double.Parse(dialog.variableWeightTextBox.Text);
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| 112 | variable.VariableName = dialog.variableNamesCombo.Text;
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| 113 | } else if (node.Symbol.MinimumArity <= parent.SubtreeCount && node.Symbol.MaximumArity >= parent.SubtreeCount) {
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| 114 | for (int i = parent.SubtreeCount - 1; i >= 0; --i) {
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| 115 | var child = parent.GetSubtree(i);
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| 116 | parent.RemoveSubtree(i);
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| 117 | node.AddSubtree(child);
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[8980] | 118 | }
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| 119 | }
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[9006] | 120 | // the if condition will always be true for the final else clause above
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| 121 | if (parent.Symbol.MaximumArity > parent.SubtreeCount) {
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| 122 | ModifyTree(Tree, parent, null, node);
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| 123 | }
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[8935] | 124 | }
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[9006] | 125 | currSelected = null;
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[8409] | 126 | }
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[8991] | 127 | private void changeNodeToolStripMenuItem_Click(object sender, EventArgs e) {
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[8409] | 128 | if (currSelected == null) return;
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[8980] | 129 |
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[11120] | 130 | var node = (ISymbolicExpressionTreeNode)currSelected.Content.Clone();
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| 131 | var originalNode = currSelected.Content;
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[9006] | 132 |
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[8980] | 133 | ISymbolicExpressionTreeNode newNode = null;
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| 134 | var result = DialogResult.Cancel;
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[8409] | 135 | if (node is ConstantTreeNode) {
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[8980] | 136 | using (var dialog = new ConstantNodeEditDialog(node)) {
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| 137 | dialog.ShowDialog(this);
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| 138 | newNode = dialog.NewNode;
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| 139 | result = dialog.DialogResult;
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| 140 | }
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[8409] | 141 | } else if (node is VariableTreeNode) {
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[8980] | 142 | using (var dialog = new VariableNodeEditDialog(node)) {
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| 143 | dialog.ShowDialog(this);
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| 144 | newNode = dialog.NewNode;
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| 145 | result = dialog.DialogResult;
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[8409] | 146 | }
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| 147 | }
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[8980] | 148 | if (result != DialogResult.OK) return;
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[9006] | 149 | ModifyTree(Tree, originalNode.Parent, originalNode, newNode); // this will replace the original node with the new node
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| 150 | currSelected = null;
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[8409] | 151 | }
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[8991] | 152 | private void cutToolStripMenuItem_Click(object sender, EventArgs e) {
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[8409] | 153 | lastOp = EditOp.CutSubtree;
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[9043] | 154 | copySubtree();
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[8409] | 155 | }
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[8991] | 156 | private void copyToolStripMenuItem_Click(object sender, EventArgs e) {
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[8409] | 157 | lastOp = EditOp.CopySubtree;
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[9043] | 158 | copySubtree();
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| 159 | }
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| 160 | private void copySubtree() {
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[9006] | 161 | if (tempNode != null) {
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[9055] | 162 | foreach (var subtree in tempNode.IterateNodesPostfix()) {
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| 163 | var visualNode = GetVisualSymbolicExpressionTreeNode(subtree);
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[11150] | 164 | visualNode.LineColor = Color.Black;
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| 165 | visualNode.TextColor = Color.Black;
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[9006] | 166 | if (subtree.Parent != null) {
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[9055] | 167 | var visualLine = GetVisualSymbolicExpressionTreeNodeConnection(subtree.Parent, subtree);
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[11150] | 168 | visualLine.LineColor = Color.Black;
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[9006] | 169 | }
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| 170 | }
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| 171 | }
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[11120] | 172 | tempNode = currSelected.Content;
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[8409] | 173 | foreach (var node in tempNode.IterateNodesPostfix()) {
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[8946] | 174 | var visualNode = GetVisualSymbolicExpressionTreeNode(node);
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[11150] | 175 | visualNode.LineColor = Color.LightGray;
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| 176 | visualNode.TextColor = Color.LightGray;
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[8935] | 177 | foreach (var subtree in node.Subtrees) {
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[8946] | 178 | var visualLine = GetVisualSymbolicExpressionTreeNodeConnection(node, subtree);
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[11150] | 179 | visualLine.LineColor = Color.LightGray;
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[8409] | 180 | }
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| 181 | }
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[9006] | 182 | currSelected = null;
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[11150] | 183 | RepaintNodes(); // no need to redo the layout and repaint everything since this operation does not change the tree
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[8409] | 184 | }
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[8991] | 185 | private void removeNodeToolStripMenuItem_Click(object sender, EventArgs e) {
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[11120] | 186 | var node = currSelected.Content;
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[9055] | 187 | if (node == tempNode) tempNode = null;
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[9006] | 188 | ModifyTree(Tree, node.Parent, node, null, removeSubtree: false);
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[8935] | 189 | currSelected = null; // because the currently selected node was just deleted
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[8409] | 190 | }
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[8991] | 191 | private void removeSubtreeToolStripMenuItem_Click(object sender, EventArgs e) {
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[11120] | 192 | var node = currSelected.Content;
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[9055] | 193 | if (node.IterateNodesPostfix().Contains(tempNode)) tempNode = null;
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[9006] | 194 | ModifyTree(Tree, node.Parent, node, null, removeSubtree: true);
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[8935] | 195 | currSelected = null; // because the currently selected node was just deleted
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[9006] | 196 | contextMenuStrip.Close(); // avoid display of submenus since the action has already been performed
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[8409] | 197 | }
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| 198 | private void pasteToolStripMenuItem_Clicked(object sender, EventArgs e) {
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[9006] | 199 | if (!(lastOp == EditOp.CopySubtree || lastOp == EditOp.CutSubtree)) return;
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[8409] | 200 | // check if the copied/cut node (stored in the tempNode) can be inserted as a child of the current selected node
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[11120] | 201 | var node = currSelected.Content;
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[8980] | 202 | if (node is ConstantTreeNode || node is VariableTreeNode) return;
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[8409] | 203 | // check if the currently selected node can accept the copied node as a child
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| 204 | // no need to check the grammar, an arity check will do just fine here
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[9006] | 205 | if (node.Symbol.MaximumArity <= node.SubtreeCount) return;
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| 206 | switch (lastOp) {
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| 207 | case EditOp.CutSubtree: {
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[9043] | 208 | if (tempNode.IterateNodesBreadth().Contains(node))
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[9057] | 209 | throw new ArgumentException();// cannot cut/paste a node into itself
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[11120] | 210 | ModifyTree(Tree, tempNode.Parent, tempNode, null); //remove node from its original parent
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[9057] | 211 | ModifyTree(Tree, node, null, tempNode); //insert it as a child to the new parent
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[9006] | 212 | break;
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| 213 | }
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| 214 | case EditOp.CopySubtree: {
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| 215 | var clone = (SymbolicExpressionTreeNode)tempNode.Clone();
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[9057] | 216 | ModifyTree(Tree, node, null, clone);
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[9006] | 217 | break;
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| 218 | }
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[8409] | 219 | }
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[9006] | 220 | currSelected = null; // because the tree will have changed
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[9043] | 221 | tempNode = null; // clear the clipboard after one paste
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[8409] | 222 | }
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| 223 | }
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| 224 | }
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