1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.layer.imagery;
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3 |
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4 | import java.util.Map;
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5 | import java.util.concurrent.CopyOnWriteArrayList;
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6 |
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7 | import org.openstreetmap.gui.jmapviewer.interfaces.TileSource;
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8 | import org.openstreetmap.josm.Main;
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9 | import org.openstreetmap.josm.data.preferences.BooleanProperty;
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10 | import org.openstreetmap.josm.gui.layer.AbstractTileSourceLayer;
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11 |
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12 | /**
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13 | * This are the preferences of how to display a {@link TileSource}.
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14 | * <p>
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15 | * They have been extracted from the {@link AbstractTileSourceLayer}. Each layer has one set of such settings.
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16 | * @author michael
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17 | * @since 10568
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18 | */
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19 | public class TileSourceDisplaySettings {
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20 | /**
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21 | * A string returned by {@link DisplaySettingsChangeEvent#getChangedSetting()} if auto load was changed.
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22 | * @see TileSourceDisplaySettings#isAutoLoad()
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23 | */
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24 | public static final String AUTO_LOAD = "automatic-downloading";
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25 |
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26 | /**
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27 | * A string returned by {@link DisplaySettingsChangeEvent#getChangedSetting()} if auto zoom was changed.
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28 | * @see TileSourceDisplaySettings#isAutoZoom()
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29 | */
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30 | public static final String AUTO_ZOOM = "automatically-change-resolution";
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31 |
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32 | /**
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33 | * A string returned by {@link DisplaySettingsChangeEvent#getChangedSetting()} if the sow errors property was changed.
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34 | * @see TileSourceDisplaySettings#isShowErrors()
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35 | */
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36 | private static final String SHOW_ERRORS = "show-errors";
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37 |
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38 | private static final String PREFERENCE_PREFIX = "imagery.generic";
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39 |
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40 | /**
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41 | * The default auto load property
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42 | */
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43 | public static final BooleanProperty PROP_AUTO_LOAD = new BooleanProperty(PREFERENCE_PREFIX + ".default_autoload", true);
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44 |
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45 | /**
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46 | * The default auto zoom property
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47 | */
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48 | public static final BooleanProperty PROP_AUTO_ZOOM = new BooleanProperty(PREFERENCE_PREFIX + ".default_autozoom", true);
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49 |
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50 | /** if layers changes automatically, when user zooms in */
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51 | private boolean autoZoom;
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52 | /** if layer automatically loads new tiles */
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53 | private boolean autoLoad;
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54 | /** if layer should show errors on tiles */
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55 | private boolean showErrors;
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56 |
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57 | private final CopyOnWriteArrayList<DisplaySettingsChangeListener> listeners = new CopyOnWriteArrayList<>();
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58 |
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59 | /**
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60 | * Create a new {@link TileSourceDisplaySettings}
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61 | */
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62 | public TileSourceDisplaySettings() {
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63 | this(new String[] {PREFERENCE_PREFIX});
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64 | }
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65 |
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66 | /**
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67 | * Create a new {@link TileSourceDisplaySettings}
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68 | * @param preferencePrefix The additional prefix to scan for preferences.
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69 | */
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70 | public TileSourceDisplaySettings(String preferencePrefix) {
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71 | this(PREFERENCE_PREFIX, preferencePrefix);
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72 | }
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73 |
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74 | private TileSourceDisplaySettings(String... prefixes) {
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75 | autoZoom = getProperty(prefixes, "default_autozoom");
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76 | autoLoad = getProperty(prefixes, "default_autoload");
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77 | showErrors = getProperty(prefixes, "default_showerrors");
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78 | }
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79 |
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80 | private static boolean getProperty(String[] prefixes, String name) {
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81 | // iterate through all values to force the preferences to receive the default value.
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82 | // we only support a default value of true.
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83 | boolean value = true;
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84 | for (String p : prefixes) {
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85 | String key = p + "." + name;
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86 | boolean currentValue = Main.pref.getBoolean(key, true);
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87 | if (!Main.pref.get(key).isEmpty()) {
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88 | value = currentValue;
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89 | }
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90 | }
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91 | return value;
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92 | }
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93 |
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94 | /**
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95 | * Let the layer zoom automatically if the user zooms in
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96 | * @return auto zoom
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97 | */
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98 | public boolean isAutoZoom() {
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99 | return autoZoom;
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100 | }
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101 |
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102 | /**
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103 | * Sets the auto zoom property
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104 | * @param autoZoom {@code true} to let the layer zoom automatically if the user zooms in
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105 | * @see #isAutoZoom()
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106 | * @see #AUTO_ZOOM
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107 | */
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108 | public void setAutoZoom(boolean autoZoom) {
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109 | this.autoZoom = autoZoom;
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110 | fireSettingsChange(AUTO_ZOOM);
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111 | }
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112 |
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113 | /**
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114 | * Gets if the layer should automatically load new tiles.
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115 | * @return <code>true</code> if it should
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116 | */
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117 | public boolean isAutoLoad() {
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118 | return autoLoad;
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119 | }
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120 |
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121 | /**
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122 | * Sets the auto load property
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123 | * @param autoLoad {@code true} if the layer should automatically load new tiles
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124 | * @see #isAutoLoad()
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125 | * @see #AUTO_LOAD
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126 | */
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127 | public void setAutoLoad(boolean autoLoad) {
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128 | this.autoLoad = autoLoad;
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129 | fireSettingsChange(AUTO_LOAD);
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130 | }
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131 |
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132 | /**
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133 | * If the layer should display the errors it encountered while loading the tiles.
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134 | * @return <code>true</code> to show errors.
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135 | */
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136 | public boolean isShowErrors() {
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137 | return showErrors;
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138 | }
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139 |
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140 | /**
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141 | * Sets the show errors property. Fires a change event.
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142 | * @param showErrors {@code true} if the layer should display the errors it encountered while loading the tiles
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143 | * @see #isShowErrors()
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144 | * @see #SHOW_ERRORS
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145 | */
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146 | public void setShowErrors(boolean showErrors) {
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147 | this.showErrors = showErrors;
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148 | fireSettingsChange(SHOW_ERRORS);
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149 | }
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150 |
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151 | /**
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152 | * Notifies all listeners that the paint settings have changed
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153 | * @param changedSetting The setting name
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154 | */
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155 | private void fireSettingsChange(String changedSetting) {
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156 | DisplaySettingsChangeEvent e = new DisplaySettingsChangeEvent(changedSetting);
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157 | for (DisplaySettingsChangeListener l : listeners) {
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158 | l.displaySettingsChanged(e);
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159 | }
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160 | }
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161 |
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162 | /**
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163 | * Add a listener that listens to display settings changes.
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164 | * @param l The listener
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165 | */
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166 | public void addSettingsChangeListener(DisplaySettingsChangeListener l) {
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167 | listeners.add(l);
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168 | }
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169 |
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170 | /**
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171 | * Remove a listener that listens to display settings changes.
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172 | * @param l The listener
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173 | */
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174 | public void removeSettingsChangeListener(DisplaySettingsChangeListener l) {
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175 | listeners.remove(l);
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176 | }
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177 |
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178 | /**
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179 | * Stores the current settings object to the given hashmap.
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180 | * @param data The map to store the settings to.
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181 | * @see #loadFrom(Map)
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182 | */
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183 | public void storeTo(Map<String, String> data) {
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184 | data.put(AUTO_LOAD, Boolean.toString(autoLoad));
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185 | data.put(AUTO_ZOOM, Boolean.toString(autoZoom));
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186 | data.put(SHOW_ERRORS, Boolean.toString(showErrors));
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187 | }
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188 |
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189 | /**
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190 | * Load the settings from the given data instance.
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191 | * @param data The data
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192 | * @see #storeTo(Map)
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193 | */
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194 | public void loadFrom(Map<String, String> data) {
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195 | String doAutoLoad = data.get(AUTO_LOAD);
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196 | if (doAutoLoad != null) {
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197 | setAutoLoad(Boolean.parseBoolean(doAutoLoad));
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198 | }
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199 |
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200 | String doAutoZoom = data.get(AUTO_ZOOM);
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201 | if (doAutoZoom != null) {
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202 | setAutoZoom(Boolean.parseBoolean(doAutoZoom));
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203 | }
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204 |
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205 | String doShowErrors = data.get(SHOW_ERRORS);
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206 | if (doShowErrors != null) {
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207 | setShowErrors(Boolean.parseBoolean(doShowErrors));
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208 | }
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209 | }
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210 |
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211 | @Override
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212 | public int hashCode() {
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213 | final int prime = 31;
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214 | int result = 1;
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215 | result = prime * result + (autoLoad ? 1231 : 1237);
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216 | result = prime * result + (autoZoom ? 1231 : 1237);
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217 | result = prime * result + (showErrors ? 1231 : 1237);
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218 | return result;
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219 | }
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220 |
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221 | @Override
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222 | public boolean equals(Object obj) {
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223 | if (this == obj)
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224 | return true;
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225 | if (obj == null)
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226 | return false;
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227 | if (getClass() != obj.getClass())
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228 | return false;
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229 | TileSourceDisplaySettings other = (TileSourceDisplaySettings) obj;
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230 | if (autoLoad != other.autoLoad)
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231 | return false;
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232 | if (autoZoom != other.autoZoom)
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233 | return false;
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234 | if (showErrors != other.showErrors)
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235 | return false;
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236 | return true;
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237 | }
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238 |
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239 | @Override
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240 | public String toString() {
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241 | return "TileSourceDisplaySettings [autoZoom=" + autoZoom + ", autoLoad=" + autoLoad + ", showErrors="
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242 | + showErrors + ']';
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243 | }
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244 |
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245 | /**
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246 | * A listener that listens to changes to the {@link TileSourceDisplaySettings} object.
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247 | * @author Michael Zangl
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248 | */
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249 | public interface DisplaySettingsChangeListener {
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250 | /**
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251 | * Called whenever the display settings have changed.
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252 | * @param e The change event.
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253 | */
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254 | void displaySettingsChanged(DisplaySettingsChangeEvent e);
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255 | }
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256 |
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257 | /**
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258 | * An event that is created whenever the display settings change.
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259 | * @author Michael Zangl
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260 | */
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261 | public static final class DisplaySettingsChangeEvent {
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262 | private final String changedSetting;
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263 |
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264 | DisplaySettingsChangeEvent(String changedSetting) {
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265 | this.changedSetting = changedSetting;
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266 | }
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267 |
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268 | /**
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269 | * Gets the setting that was changed
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270 | * @return The name of the changed setting.
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271 | */
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272 | public String getChangedSetting() {
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273 | return changedSetting;
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274 | }
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275 |
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276 | @Override
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277 | public String toString() {
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278 | return "DisplaySettingsChangeEvent [changedSetting=" + changedSetting + ']';
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279 | }
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280 | }
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281 | }
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