1 | package org.expeditee.gui;
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2 |
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3 | import java.awt.Polygon;
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4 | import java.util.ArrayList;
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5 | import java.util.Collection;
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6 | import java.util.HashMap;
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7 | import java.util.HashSet;
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8 | import java.util.LinkedHashSet;
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9 | import java.util.LinkedList;
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10 | import java.util.Map;
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11 |
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12 | import org.expeditee.items.Item;
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13 | import org.expeditee.items.Text;
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14 |
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15 | public class FreeItems extends ArrayList<Item> {
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16 |
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17 | private static final long serialVersionUID = 1L;
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18 |
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19 | private static FreeItems _instance = new FreeItems();
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20 |
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21 | private FreeItems() {
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22 | }
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23 |
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24 | public static FreeItems getInstance() {
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25 | return _instance;
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26 | }
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27 |
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28 | @Override
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29 | public void clear() {
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30 | for (Item i : this) {
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31 | i.invalidateAll();
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32 | i.invalidateFill();
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33 | }
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34 | super.clear();
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35 | }
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36 |
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37 | @Override
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38 | public Item remove(int index) {
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39 | Item i = get(index);
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40 | remove(i);
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41 | return i;
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42 | }
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43 |
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44 | @Override
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45 | public boolean remove(Object o) {
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46 | if (o instanceof Item) {
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47 | ((Item) o).invalidateAll();
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48 | ((Item) o).invalidateFill();
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49 | }
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50 | return super.remove(o);
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51 | }
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52 |
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53 | /**
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54 | * Return true if there is at least one item attached to the end of the
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55 | * cursor.
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56 | *
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57 | * @return true if at least one item is attached to the cursor.
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58 | */
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59 | public static boolean itemsAttachedToCursor() {
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60 | return getInstance().size() > 0;
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61 | }
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62 |
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63 | /**
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64 | * Checks if only text items are attached to the cursor.
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65 | *
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66 | * @return true if at least one item is attached to the cursor and all items
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67 | * attached are text items.
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68 | */
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69 | public static boolean textOnlyAttachedToCursor() {
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70 | if (!itemsAttachedToCursor())
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71 | return false;
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72 | for (Item i : getInstance()) {
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73 | if (!(i instanceof Text)) {
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74 | return false;
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75 | }
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76 | }
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77 | return true;
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78 | }
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79 |
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80 | public static Item getItemAttachedToCursor() {
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81 | if (itemsAttachedToCursor())
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82 | return getInstance().get(0);
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83 | return null;
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84 | }
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85 |
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86 | public static Text getTextAttachedToCursor() {
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87 | if (textOnlyAttachedToCursor())
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88 | return (Text) getInstance().get(0);
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89 | return null;
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90 | }
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91 |
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92 | /**
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93 | * Creates a list of the free text items.
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94 | * @return the list of free text items
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95 | */
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96 | public static Collection<Text> getTextItems() {
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97 | Collection<Text> textItems = new LinkedList<Text>();
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98 | for (Item i : getInstance()) {
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99 | if (i instanceof Text) {
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100 | textItems.add((Text) i);
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101 | }
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102 | }
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103 |
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104 | return textItems;
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105 | }
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106 |
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107 | public static Map<String, Collection<String>> getGroupedText() {
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108 | Map<String, Collection<String>> groupedText = new HashMap<String, Collection<String>>();
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109 | // Go throught the lineEnds
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110 | Collection<Item> addedItems = new HashSet<Item>();
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111 | for (Item i : getInstance()) {
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112 | if (!(i instanceof Text) || !i.isLineEnd()) {
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113 | continue;
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114 | }
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115 | // Check for text inside the box
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116 | Collection<String> textList = new LinkedList<String>();
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117 | for (Text enclosed : getInstance().getTextWithin(i)) {
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118 | textList.add(enclosed.getText());
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119 | addedItems.add(enclosed);
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120 | }
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121 | if (textList.size() > 0) {
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122 | groupedText.put(i.getText(), textList);
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123 | }
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124 | }
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125 | // Now add the items that were not contained in any of the boxes
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126 | Collection<String> outsideList = new LinkedList<String>();
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127 | for (Item i : getInstance()) {
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128 | if (i instanceof Text && !i.isLineEnd() && !addedItems.contains(i)) {
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129 | outsideList.add(i.getText());
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130 | }
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131 | }
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132 | groupedText.put("", outsideList);
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133 |
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134 | return groupedText;
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135 | }
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136 |
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137 | /**
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138 | * Gets a list of non-line-end text items within a specified rectangle in
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139 | * the free items list.
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140 | *
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141 | * @param lineEnd
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142 | * @return
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143 | */
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144 | private Collection<Text> getTextWithin(Item lineEnd) {
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145 | Polygon poly = lineEnd.getEnclosedShape();
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146 | Collection<Text> results = new LinkedHashSet<Text>();
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147 | for (Item i : this) {
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148 | if (i.intersects(poly) && i instanceof Text && !i.isLineEnd()) {
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149 | results.add((Text) i);
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150 | }
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151 | }
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152 | return results;
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153 | }
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154 | }
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