1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.tagging.ac;
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3 |
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4 | import java.util.Objects;
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5 |
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6 | /**
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7 | * Describes the priority of an item in an autocompletion set.
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8 | * The selected flag is currently only used in plugins.
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9 | *
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10 | * Instances of this class are not modifiable.
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11 | * @since 12859 (copied from {@code gui.tagging.ac.AutoCompletionItemPriority})
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12 | */
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13 | public class AutoCompletionPriority implements Comparable<AutoCompletionPriority> {
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14 |
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15 | /**
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16 | * Indicates, that the value is standard and it is found in the data.
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17 | * This has higher priority than some arbitrary standard value that is
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18 | * usually not used by the user.
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19 | */
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20 | public static final AutoCompletionPriority IS_IN_STANDARD_AND_IN_DATASET = new AutoCompletionPriority(true, true, false);
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21 |
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22 | /**
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23 | * Indicates that this is an arbitrary value from the data set, i.e.
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24 | * the value of a tag name=*.
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25 | */
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26 | public static final AutoCompletionPriority IS_IN_DATASET = new AutoCompletionPriority(true, false, false);
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27 |
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28 | /**
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29 | * Indicates that this is a standard value, i.e. a standard tag name
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30 | * or a standard value for a given tag name (from the presets).
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31 | */
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32 | public static final AutoCompletionPriority IS_IN_STANDARD = new AutoCompletionPriority(false, true, false);
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33 |
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34 | /**
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35 | * Indicates that this is a value from a selected object.
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36 | */
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37 | public static final AutoCompletionPriority IS_IN_SELECTION = new AutoCompletionPriority(false, false, true);
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38 |
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39 | /** Unknown priority. This is the lowest priority. */
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40 | public static final AutoCompletionPriority UNKNOWN = new AutoCompletionPriority(false, false, false);
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41 |
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42 | private static final int NO_USER_INPUT = Integer.MAX_VALUE;
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43 |
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44 | private final int userInput;
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45 | private final boolean inDataSet;
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46 | private final boolean inStandard;
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47 | private final boolean selected;
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48 |
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49 | /**
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50 | * Constructs a new {@code AutoCompletionItemPriority}.
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51 | *
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52 | * @param inDataSet true, if the item is found in the currently active data layer
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53 | * @param inStandard true, if the item is a standard tag, e.g. from the presets
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54 | * @param selected true, if it is found on an object that is currently selected
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55 | * @param userInput null, if the user hasn't entered this tag so far. A number when
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56 | * the tag key / value has been entered by the user before. A lower number means
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57 | * this happened more recently and beats a higher number in priority.
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58 | */
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59 | public AutoCompletionPriority(boolean inDataSet, boolean inStandard, boolean selected, Integer userInput) {
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60 | this.inDataSet = inDataSet;
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61 | this.inStandard = inStandard;
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62 | this.selected = selected;
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63 | this.userInput = userInput == null ? NO_USER_INPUT : userInput;
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64 | }
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65 |
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66 | /**
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67 | * Constructs a new {@code AutoCompletionItemPriority}.
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68 | *
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69 | * @param inDataSet true, if the item is found in the currently active data layer
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70 | * @param inStandard true, if the item is a standard tag, e.g. from the presets
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71 | * @param selected true, if it is found on an object that is currently selected
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72 | */
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73 | public AutoCompletionPriority(boolean inDataSet, boolean inStandard, boolean selected) {
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74 | this(inDataSet, inStandard, selected, NO_USER_INPUT);
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75 | }
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76 |
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77 | /**
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78 | * Determines if the item is found in the currently active data layer.
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79 | * @return {@code true} if the item is found in the currently active data layer
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80 | */
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81 | public boolean isInDataSet() {
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82 | return inDataSet;
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83 | }
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84 |
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85 | /**
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86 | * Determines if the item is a standard tag, e.g. from the presets.
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87 | * @return {@code true} if the item is a standard tag, e.g. from the presets
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88 | */
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89 | public boolean isInStandard() {
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90 | return inStandard;
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91 | }
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92 |
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93 | /**
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94 | * Determines if it is found on an object that is currently selected.
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95 | * @return {@code true} if it is found on an object that is currently selected
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96 | */
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97 | public boolean isSelected() {
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98 | return selected;
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99 | }
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100 |
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101 | /**
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102 | * Returns a number when the tag key / value has been entered by the user before.
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103 | * A lower number means this happened more recently and beats a higher number in priority.
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104 | * @return a number when the tag key / value has been entered by the user before.
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105 | * {@code null}, if the user hasn't entered this tag so far.
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106 | */
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107 | public Integer getUserInput() {
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108 | return userInput == NO_USER_INPUT ? null : userInput;
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109 | }
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110 |
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111 | /**
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112 | * Imposes an ordering on the priorities.
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113 | * Currently, being in the current DataSet is worth more than being in the Presets.
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114 | */
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115 | @Override
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116 | public int compareTo(AutoCompletionPriority other) {
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117 | int ui = Integer.compare(other.userInput, userInput);
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118 | if (ui != 0)
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119 | return ui;
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120 |
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121 | int sel = Boolean.compare(selected, other.selected);
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122 | if (sel != 0)
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123 | return sel;
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124 |
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125 | int ds = Boolean.compare(inDataSet, other.inDataSet);
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126 | if (ds != 0)
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127 | return ds;
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128 |
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129 | int std = Boolean.compare(inStandard, other.inStandard);
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130 | if (std != 0)
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131 | return std;
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132 |
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133 | return 0;
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134 | }
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135 |
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136 | /**
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137 | * Merges two priorities.
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138 | * The resulting priority is always >= the original ones.
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139 | * @param other other priority
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140 | * @return the merged priority
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141 | */
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142 | public AutoCompletionPriority mergeWith(AutoCompletionPriority other) {
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143 | return new AutoCompletionPriority(
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144 | inDataSet || other.inDataSet,
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145 | inStandard || other.inStandard,
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146 | selected || other.selected,
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147 | Math.min(userInput, other.userInput));
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148 | }
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149 |
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150 | @Override
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151 | public int hashCode() {
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152 | return Objects.hash(inDataSet, inStandard, selected, userInput);
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153 | }
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154 |
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155 | @Override
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156 | public boolean equals(Object obj) {
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157 | if (this == obj)
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158 | return true;
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159 | if (obj == null || getClass() != obj.getClass())
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160 | return false;
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161 | AutoCompletionPriority other = (AutoCompletionPriority) obj;
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162 | return inDataSet == other.inDataSet &&
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163 | inStandard == other.inStandard &&
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164 | selected == other.selected &&
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165 | userInput == other.userInput;
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166 | }
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167 |
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168 | @Override
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169 | public String toString() {
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170 | return String.format("<Priority; userInput: %s, inDataSet: %b, inStandard: %b, selected: %b>",
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171 | userInput == NO_USER_INPUT ? "no" : Integer.toString(userInput), inDataSet, inStandard, selected);
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172 | }
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173 | }
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