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annotate org.eclipse.draw2d/src/org/eclipse/draw2d/graph/NestingTree.d @ 16:dbfb303e8fb0

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first complete successful compile (win-only)
author Frank Benoit <benoit@tionex.de>
date Wed, 18 Mar 2009 08:56:47 +0100
parents bc29606a740c
children
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1 /*******************************************************************************
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2 * Copyright (c) 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.draw2d.graph.NestingTree;
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14
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15 import java.lang.all;
16
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16 import java.util.HashMap;
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17 import java.util.ArrayList;
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18 import java.util.List;
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19 import java.util.Map;
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20 import org.eclipse.draw2d.graph.Node;
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21 import org.eclipse.draw2d.graph.Rank;
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22 import org.eclipse.draw2d.graph.Subgraph;
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23
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24 class NestingTree {
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25
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26 List contents;
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27 bool isLeaf = true;
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28 int size;
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29 double sortValue;
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30 Node subgraph;
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31
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32 public this(){
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33 contents = new ArrayList();
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34 }
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35 private static void addToNestingTree(Map map, Node child) {
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36 Subgraph subgraph = child.getParent();
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37 NestingTree parent = cast(NestingTree)map.get(subgraph);
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38 if (parent is null) {
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39 parent = new NestingTree();
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40 parent.subgraph = subgraph;
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41 map.put(subgraph, parent);
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42 if (subgraph !is null)
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43 addToNestingTree(map, parent);
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44 }
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45 parent.contents.add(child);
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46 }
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47
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48 private static void addToNestingTree(Map map, NestingTree branch) {
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49 Subgraph subgraph = branch.subgraph.getParent();
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50 NestingTree parent = cast(NestingTree)map.get(subgraph);
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51 if (parent is null) {
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52 parent = new NestingTree();
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53 parent.subgraph = subgraph;
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54 map.put(subgraph, parent);
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55 if (subgraph !is null)
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56 addToNestingTree(map, parent);
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57 }
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58 parent.contents.add(branch);
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59 }
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60
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61 static NestingTree buildNestingTreeForRank(Rank rank) {
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62 Map nestingMap = new HashMap();
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63
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64 for (int j = 0; j < rank.count(); j++) {
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65 Node node = rank.getNode(j);
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66 addToNestingTree(nestingMap, node);
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67 }
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68
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69 return cast(NestingTree)nestingMap.get(cast(Object)null);
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70 }
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71
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72 void calculateSortValues() {
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73 int total = 0;
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74 for (int i = 0; i < contents.size(); i++) {
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75 Object o = contents.get(i);
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76 if ( auto e = cast(NestingTree)o ) {
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77 isLeaf = false;
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78 e.calculateSortValues();
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79 total += cast(int)(e.sortValue * e.size);
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80 size += e.size;
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81 } else {
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82 Node n = cast(Node)o;
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83 n.sortValue = n.index;
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84 total += n.index;
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85 size++;
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86 }
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87 }
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88 sortValue = cast(double)total / size;
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89 }
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90
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91 void getSortValueFromSubgraph() {
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92 if (subgraph !is null)
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93 sortValue = subgraph.sortValue;
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94 for (int i = 0; i < contents.size(); i++) {
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95 Object o = contents.get(i);
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96 if (auto nt = cast(NestingTree)o )
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97 nt.getSortValueFromSubgraph();
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98 }
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99 }
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100
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101 void recursiveSort(bool sortLeaves) {
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102 if (isLeaf && !sortLeaves)
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103 return;
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104 bool change = false;
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105 //Use modified bubble sort for almost-sorted lists.
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106 do {
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107 change = false;
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108 for (int i = 0; i < contents.size() - 1; i++)
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109 change |= swap(i);
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110 if (!change)
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111 break;
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112 change = false;
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113 for (int i = contents.size() - 2; i >= 0; i--)
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114 change |= swap(i);
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115 } while (change);
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116 for (int i = 0; i < contents.size(); i++) {
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117 Object o = contents.get(i);
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118 if (auto nt = cast(NestingTree)o )
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119 nt.recursiveSort(sortLeaves);
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120 }
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121 }
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122
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123 void repopulateRank(Rank r) {
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124 for (int i = 0; i < contents.size(); i++) {
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125 Object o = contents.get(i);
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126 if (null !is cast(Node)o )
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127 r.add(o);
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128 else
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129 (cast(NestingTree)o).repopulateRank(r);
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130 }
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131 }
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132
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133
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134 bool swap(int index) {
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135 Object left = contents.get(index);
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136 Object right = contents.get(index + 1);
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137 double iL = (null !is cast(Node)left )
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138 ? (cast(Node)left).sortValue
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139 : (cast(NestingTree)left).sortValue;
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140 double iR = (null !is cast(Node)right )
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141 ? (cast(Node)right).sortValue
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142 : (cast(NestingTree)right).sortValue;
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143 if (iL <= iR)
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144 return false;
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145 contents.set(index, right);
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146 contents.set(index + 1, left);
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147 return true;
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148 }
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149
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150 public String toString() {
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151 if( subgraph )
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152 return "Nesting:" ~ subgraph.toString; //$NON-NLS-1$
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153 return "Nesting: null"; //$NON-NLS-1$
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154 }
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155
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156 }