svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / feature / impl / DefaultFeatureReferenceSelection.java @ 44500
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | 40435 | jjdelcerro | *
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4 | 40559 | jjdelcerro | * Copyright (C) 2007-2013 gvSIG Association.
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5 | 40435 | jjdelcerro | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | 40559 | jjdelcerro | * as published by the Free Software Foundation; either version 3
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9 | 40435 | jjdelcerro | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | 40559 | jjdelcerro | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | 40435 | jjdelcerro | */
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24 | package org.gvsig.fmap.dal.feature.impl; |
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25 | |||
26 | import java.lang.ref.Reference; |
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27 | import java.util.Collections; |
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28 | import java.util.HashSet; |
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29 | import java.util.Iterator; |
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30 | import java.util.Set; |
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31 | 43646 | jjdelcerro | import java.util.logging.Level; |
32 | import java.util.logging.Logger; |
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33 | 40435 | jjdelcerro | |
34 | import org.gvsig.fmap.dal.DataStore; |
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35 | import org.gvsig.fmap.dal.DataStoreNotification; |
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36 | import org.gvsig.fmap.dal.exception.DataException; |
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37 | import org.gvsig.fmap.dal.feature.FeatureReference; |
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38 | import org.gvsig.fmap.dal.feature.FeatureReferenceSelection; |
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39 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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40 | import org.gvsig.fmap.dal.feature.FeatureStoreNotification; |
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41 | 44435 | jjdelcerro | import org.gvsig.fmap.dal.feature.FeatureType; |
42 | 40435 | jjdelcerro | import org.gvsig.fmap.dal.feature.impl.undo.FeatureCommandsStack; |
43 | import org.gvsig.tools.ToolsLocator; |
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44 | import org.gvsig.tools.dispose.impl.AbstractDisposable; |
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45 | import org.gvsig.tools.dynobject.DynStruct; |
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46 | import org.gvsig.tools.exception.BaseException; |
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47 | import org.gvsig.tools.lang.Cloneable; |
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48 | import org.gvsig.tools.observer.Observable; |
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49 | import org.gvsig.tools.observer.Observer; |
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50 | import org.gvsig.tools.observer.impl.BaseWeakReferencingObservable; |
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51 | import org.gvsig.tools.observer.impl.DelegateWeakReferencingObservable; |
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52 | import org.gvsig.tools.persistence.PersistentState; |
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53 | import org.gvsig.tools.persistence.exception.PersistenceException; |
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54 | import org.gvsig.tools.visitor.Visitor; |
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55 | |||
56 | /**
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57 | * Default implementation of a FeatureReferenceSelection, based on the usage of
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58 | * a java.util.Set to store individual selected or not selected
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59 | * FeatureReferences, depending on the usage of the {@link #reverse()} method.
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60 | *
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61 | * @author <a href="mailto:cordin@disid.com">C?sar Ordi?ana</a>
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62 | */
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63 | public class DefaultFeatureReferenceSelection extends AbstractDisposable |
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64 | implements FeatureReferenceSelection {
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65 | |||
66 | public static final String DYNCLASS_PERSISTENT_NAME = |
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67 | "DefaultFeatureReferenceSelection";
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68 | |||
69 | 44435 | jjdelcerro | private Boolean available = null; |
70 | |||
71 | 43646 | jjdelcerro | protected SelectionData selectionData = null; |
72 | 40435 | jjdelcerro | |
73 | private FeatureStore featureStore;
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74 | |||
75 | private FeatureSelectionHelper helper;
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76 | |||
77 | private DelegateWeakReferencingObservable delegateObservable =
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78 | new DelegateWeakReferencingObservable(this); |
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79 | |||
80 | /**
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81 | * Creates a new Selection with the total size of Features from which the
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82 | * selection will be performed.
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83 | *
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84 | * @param featureStore
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85 | * the FeatureStore of the selected FeatureReferences
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86 | * @throws DataException
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87 | * if there is an error while getting the total number of
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88 | * Features of the Store.
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89 | */
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90 | public DefaultFeatureReferenceSelection(DefaultFeatureStore featureStore)
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91 | throws DataException {
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92 | super();
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93 | this.featureStore = featureStore;
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94 | this.helper = new DefaultFeatureSelectionHelper(featureStore); |
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95 | } |
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96 | |||
97 | /**
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98 | * Creates a new Selection with the total size of Features from which the
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99 | * selection will be performed.
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100 | *
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101 | * @param featureStore
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102 | * the FeatureStore of the selected FeatureReferences
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103 | * @param helper
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104 | * to get some information of the Store
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105 | * @throws DataException
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106 | * if there is an error while getting the total number of
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107 | * Features of the Store.
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108 | */
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109 | public DefaultFeatureReferenceSelection(FeatureStore featureStore,
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110 | FeatureSelectionHelper helper) |
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111 | throws DataException {
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112 | super();
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113 | this.featureStore = featureStore;
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114 | this.helper = helper;
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115 | } |
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116 | |||
117 | /**
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118 | * Constructor used by the persistence manager. Don't use directly. After to
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119 | * invoke this method, the persistence manager calls the the method
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120 | * {@link #loadFromState(PersistentState)} to set the values of the internal
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121 | * attributes that this class needs to work.
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122 | */
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123 | public DefaultFeatureReferenceSelection() {
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124 | super();
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125 | } |
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126 | |||
127 | public boolean select(FeatureReference reference) { |
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128 | return select(reference, true); |
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129 | } |
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130 | |||
131 | /**
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132 | * @see #select(FeatureReference)
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133 | * @param undoable
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134 | * if the action must be undoable
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135 | */
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136 | public boolean select(FeatureReference reference, boolean undoable) { |
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137 | |||
138 | if (reference == null) { |
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139 | throw new IllegalArgumentException("reference"); |
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140 | } |
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141 | |||
142 | if (isSelected(reference)) {
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143 | return false; |
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144 | } |
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145 | |||
146 | if (undoable && getFeatureStore().isEditing()) {
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147 | getCommands().select(this, reference);
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148 | } |
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149 | boolean change = false; |
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150 | 43646 | jjdelcerro | if ( this.getData().isReversed()) { |
151 | change = this.getData().remove(reference);
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152 | 40435 | jjdelcerro | } else {
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153 | 43646 | jjdelcerro | change = this.getData().add(reference);
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154 | 40435 | jjdelcerro | } |
155 | |||
156 | if (change) {
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157 | notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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158 | } |
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159 | |||
160 | return change;
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161 | } |
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162 | |||
163 | public boolean deselect(FeatureReference reference) { |
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164 | return deselect(reference, true); |
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165 | } |
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166 | |||
167 | /**
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168 | * @see #deselect(FeatureReference)
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169 | * @param undoable
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170 | * if the action must be undoable
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171 | */
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172 | public boolean deselect(FeatureReference reference, boolean undoable) { |
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173 | if (!isSelected(reference)) {
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174 | return false; |
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175 | } |
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176 | |||
177 | if (undoable && getFeatureStore().isEditing()) {
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178 | getCommands().deselect(this, reference);
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179 | } |
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180 | boolean change = false; |
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181 | 43646 | jjdelcerro | if (this.getData().isReversed()) { |
182 | change = this.getData().add(reference);
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183 | 40435 | jjdelcerro | } else {
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184 | 43646 | jjdelcerro | change = this.getData().remove(reference);
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185 | 40435 | jjdelcerro | } |
186 | |||
187 | if (change) {
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188 | notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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189 | } |
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190 | |||
191 | return change;
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192 | } |
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193 | |||
194 | public void selectAll() throws DataException { |
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195 | selectAll(true);
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196 | } |
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197 | |||
198 | /**
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199 | * @see #selectAll()
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200 | * @param undoable
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201 | * if the action must be undoable
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202 | */
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203 | public void selectAll(boolean undoable) throws DataException { |
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204 | if (undoable && getFeatureStore().isEditing()) {
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205 | getCommands().startComplex("_selectionSelectAll");
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206 | getCommands().selectAll(this);
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207 | } |
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208 | 43646 | jjdelcerro | if (!this.getData().isReversed()) { |
209 | this.getData().setReversed(true); |
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210 | 40435 | jjdelcerro | } |
211 | clearFeatureReferences(); |
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212 | if (undoable && getFeatureStore().isEditing()) {
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213 | getCommands().endComplex(); |
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214 | } |
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215 | notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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216 | } |
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217 | |||
218 | public void deselectAll() throws DataException { |
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219 | deselectAll(false);
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220 | } |
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221 | |||
222 | /**
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223 | * @see #deselectAll()
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224 | * @param undoable
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225 | * if the action must be undoable
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226 | */
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227 | public void deselectAll(boolean undoable) throws DataException { |
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228 | 43646 | jjdelcerro | if( this.selectionData==null ) { |
229 | return;
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230 | } |
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231 | 40435 | jjdelcerro | if (undoable && getFeatureStore().isEditing()) {
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232 | getCommands().startComplex("_selectionDeselectAll");
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233 | getCommands().deselectAll(this);
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234 | } |
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235 | 43646 | jjdelcerro | if (this.getData().isReversed()) { |
236 | this.getData().setReversed(false); |
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237 | 40435 | jjdelcerro | } |
238 | clearFeatureReferences(); |
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239 | if (undoable && getFeatureStore().isEditing()) {
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240 | getCommands().endComplex(); |
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241 | } |
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242 | |||
243 | notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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244 | } |
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245 | |||
246 | public boolean isSelected(FeatureReference reference) { |
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247 | 43646 | jjdelcerro | if( this.selectionData==null ) { |
248 | return false; |
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249 | } |
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250 | if (this.getData().isReversed()) { |
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251 | return !this.getData().contains(reference); |
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252 | 40435 | jjdelcerro | } else {
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253 | 43646 | jjdelcerro | return this.getData().contains(reference); |
254 | 40435 | jjdelcerro | } |
255 | } |
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256 | |||
257 | public void reverse() { |
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258 | reverse(true);
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259 | } |
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260 | |||
261 | /**
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262 | * @see #reverse()
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263 | * @param undoable
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264 | * if the action must be undoable
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265 | */
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266 | public void reverse(boolean undoable) { |
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267 | if (undoable && getFeatureStore().isEditing()) {
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268 | getCommands().selectionReverse(this);
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269 | } |
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270 | 43646 | jjdelcerro | this.getData().setReversed(!this.getData().isReversed()); |
271 | 40435 | jjdelcerro | notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
272 | } |
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273 | 43646 | jjdelcerro | |
274 | public boolean isEmpty() { |
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275 | if( this.selectionData == null ) { |
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276 | return true; |
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277 | } |
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278 | return this.getSelectedCount()==0; |
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279 | } |
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280 | 40435 | jjdelcerro | |
281 | public long getSelectedCount() { |
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282 | 43646 | jjdelcerro | if( this.selectionData == null ) { |
283 | return 0; |
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284 | } |
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285 | if (this.getData().isReversed()) { |
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286 | return this.getData().getTotalSize() - this.getData().getSize() |
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287 | 40435 | jjdelcerro | + helper.getFeatureStoreDeltaSize(); |
288 | } else {
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289 | 43646 | jjdelcerro | return this.getData().getSize(); |
290 | 40435 | jjdelcerro | } |
291 | } |
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292 | |||
293 | public Iterator referenceIterator() { |
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294 | 43646 | jjdelcerro | return Collections.unmodifiableSet(this.getData().getSelected()) |
295 | 40435 | jjdelcerro | .iterator(); |
296 | } |
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297 | |||
298 | protected void doDispose() throws BaseException { |
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299 | delegateObservable.deleteObservers(); |
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300 | deselectAll(false);
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301 | } |
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302 | |||
303 | public boolean isFromStore(DataStore store) { |
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304 | return featureStore.equals(store);
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305 | } |
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306 | |||
307 | public void accept(Visitor visitor) throws BaseException { |
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308 | 43646 | jjdelcerro | if( this.selectionData==null ) { |
309 | return;
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310 | } |
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311 | for (Iterator iter = this.getData().getSelected().iterator(); iter |
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312 | 40435 | jjdelcerro | .hasNext();) { |
313 | visitor.visit(iter.next()); |
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314 | } |
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315 | } |
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316 | |||
317 | public void update(Observable observable, |
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318 | Object notification) {
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319 | // If a Feature is deleted, remove it from the selection Set.
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320 | if (notification instanceof FeatureStoreNotification) { |
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321 | FeatureStoreNotification storeNotif = (FeatureStoreNotification) notification; |
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322 | if (FeatureStoreNotification.AFTER_DELETE
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323 | .equalsIgnoreCase(storeNotif.getType())) { |
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324 | 43646 | jjdelcerro | this.getData().remove(storeNotif.getFeature().getReference());
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325 | 40435 | jjdelcerro | } |
326 | } |
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327 | } |
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328 | |||
329 | public SelectionData getData() {
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330 | 43646 | jjdelcerro | if( selectionData==null ) { |
331 | selectionData = new SelectionData();
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332 | try {
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333 | selectionData.setTotalSize(featureStore.getFeatureCount()); |
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334 | } catch (DataException ex) {
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335 | throw new RuntimeException("Can't initialize SelectionData, don't get the feature count.",ex); |
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336 | } |
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337 | } |
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338 | 40435 | jjdelcerro | return selectionData;
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339 | } |
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340 | |||
341 | public void setData(SelectionData selectionData) { |
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342 | this.selectionData = selectionData;
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343 | notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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344 | } |
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345 | |||
346 | public String toString() { |
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347 | return getClass().getName() + ": " + getSelectedCount() |
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348 | + " features selected, reversed = "
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349 | 43646 | jjdelcerro | + this.getData().isReversed() + ", featureIds contained: " |
350 | + this.getData().getSelected();
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351 | 40435 | jjdelcerro | } |
352 | |||
353 | protected boolean isReversed() { |
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354 | 43646 | jjdelcerro | if( this.selectionData==null ) { |
355 | return false; |
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356 | } |
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357 | return this.getData().isReversed(); |
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358 | 40435 | jjdelcerro | } |
359 | |||
360 | /**
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361 | * Removes all the stored FeatureRefence objects.
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362 | */
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363 | protected void clearFeatureReferences() { |
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364 | 43646 | jjdelcerro | if( this.selectionData==null ) { |
365 | return;
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366 | } |
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367 | this.getData().clear();
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368 | 40435 | jjdelcerro | } |
369 | |||
370 | /**
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371 | * Returns the FeatureStore of the selected FeatureReferences.
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372 | *
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373 | * @return the featureStore
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374 | */
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375 | protected FeatureStore getFeatureStore() {
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376 | return featureStore;
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377 | } |
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378 | |||
379 | /**
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380 | * Returns the reference to the commands record.
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381 | *
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382 | * @return the reference to the commands record
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383 | */
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384 | protected FeatureCommandsStack getCommands() {
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385 | return helper.getFeatureStoreCommandsStack();
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386 | } |
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387 | |||
388 | public static class SelectionData implements Cloneable { |
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389 | private Set selected = new HashSet(); |
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390 | |||
391 | /**
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392 | * Sets how the Set of selected values has to be dealt.
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393 | * <p>
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394 | * If selected is FALSE, then values into the Set are the selected ones,
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395 | * anything else is not selected.
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396 | * </p>
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397 | * <p>
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398 | * If selected is TRUE, then values into the Set are values not
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399 | * selected, anything else is selected.
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400 | * </p>
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401 | */
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402 | private boolean reversed = false; |
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403 | |||
404 | private long totalSize; |
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405 | |||
406 | /**
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407 | * @return the selected
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408 | */
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409 | public Set getSelected() { |
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410 | return selected;
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411 | } |
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412 | |||
413 | /**
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414 | * @param selected
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415 | * the selected to set
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416 | */
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417 | public void setSelected(Set selected) { |
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418 | this.selected = selected;
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419 | } |
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420 | |||
421 | /**
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422 | * @return the reversed
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423 | */
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424 | public boolean isReversed() { |
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425 | return reversed;
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426 | } |
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427 | |||
428 | /**
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429 | * @param reversed
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430 | * the reversed to set
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431 | */
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432 | public void setReversed(boolean reversed) { |
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433 | this.reversed = reversed;
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434 | } |
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435 | |||
436 | /**
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437 | * @return the totalSize
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438 | */
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439 | public long getTotalSize() { |
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440 | return totalSize;
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441 | } |
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442 | |||
443 | /**
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444 | * @param totalSize
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445 | * the totalSize to set
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446 | */
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447 | public void setTotalSize(long totalSize) { |
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448 | this.totalSize = totalSize;
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449 | } |
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450 | |||
451 | public boolean add(FeatureReference reference) { |
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452 | return selected.add(reference);
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453 | } |
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454 | |||
455 | public boolean remove(FeatureReference reference) { |
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456 | return selected.remove(reference);
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457 | } |
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458 | |||
459 | public void clear() { |
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460 | selected.clear(); |
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461 | } |
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462 | |||
463 | public boolean contains(FeatureReference reference) { |
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464 | return selected.contains(reference);
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465 | } |
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466 | |||
467 | public int getSize() { |
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468 | return selected.size();
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469 | } |
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470 | |||
471 | public Object clone() throws CloneNotSupportedException { |
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472 | SelectionData clone = (SelectionData) super.clone();
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473 | // reversed and totalSize already cloned by parent.
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474 | // clone the selected Set
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475 | clone.selected = new HashSet(selected); |
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476 | return clone;
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477 | } |
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478 | } |
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479 | |||
480 | // *** Persistence ***
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481 | |||
482 | 43725 | jjdelcerro | @Override
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483 | 40435 | jjdelcerro | public void saveToState(PersistentState state) throws PersistenceException { |
484 | state.set("store", featureStore);
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485 | 43646 | jjdelcerro | state.set("reversed", this.getData().isReversed()); |
486 | state.set("totalSize", this.getData().getTotalSize()); |
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487 | state.set("selected", this.getData().getSelected().iterator()); |
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488 | 40435 | jjdelcerro | } |
489 | |||
490 | 43725 | jjdelcerro | @Override
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491 | 40435 | jjdelcerro | public void loadFromState(PersistentState state) |
492 | throws PersistenceException {
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493 | 43725 | jjdelcerro | SelectionData data = new SelectionData(); // Do not use this.getData() |
494 | featureStore = (FeatureStore)state.get("store");
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495 | helper = new DefaultFeatureSelectionHelper((DefaultFeatureStore)featureStore);
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496 | data.setReversed(state.getBoolean("reversed"));
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497 | data.setTotalSize(state.getLong("totalSize"));
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498 | Iterator it = state.getIterator("selected"); |
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499 | while (it.hasNext()) {
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500 | DefaultFeatureReference ref = (DefaultFeatureReference) it.next(); |
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501 | data.add(ref); |
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502 | } |
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503 | |||
504 | /*
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505 | * If we do not do this, feature store will not listen
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506 | * to changes in selection after instantiating a
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507 | * persisted selection. For non-persisted instances,
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508 | * this line corresponds to the line found in method:
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509 | * getFeatureSelection() in DefaultFeatureStore.
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510 | * This is not dangerous because "addObserver" only adds
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511 | * if they were not already added, so future invocations
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512 | * with same instances will have no effect.
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513 | */
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514 | this.addObserver((DefaultFeatureStore)featureStore);
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515 | 40435 | jjdelcerro | } |
516 | |||
517 | public static void registerPersistent() { |
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518 | DynStruct definition = ToolsLocator.getPersistenceManager().addDefinition( |
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519 | DefaultFeatureReferenceSelection.class, |
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520 | DYNCLASS_PERSISTENT_NAME, |
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521 | "DefaultFeatureReferenceSelection Persistent definition",
|
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522 | null,
|
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523 | null
|
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524 | ); |
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525 | |||
526 | definition.addDynFieldObject("store").setClassOfValue(FeatureStore.class).setMandatory(true); |
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527 | definition.addDynFieldBoolean("reversed").setMandatory(true); |
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528 | definition.addDynFieldLong("totalSize").setMandatory(true); |
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529 | definition.addDynFieldList("selected").setClassOfItems(DefaultFeatureReference.class).setMandatory(true); |
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530 | |||
531 | } |
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532 | |||
533 | public void addObserver(Observer observer) { |
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534 | delegateObservable.addObserver(observer); |
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535 | } |
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536 | |||
537 | public void addObserver(Reference ref) { |
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538 | delegateObservable.addObserver(ref); |
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539 | } |
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540 | |||
541 | public void addObservers(BaseWeakReferencingObservable observable) { |
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542 | delegateObservable.addObservers(observable); |
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543 | } |
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544 | |||
545 | public void beginComplexNotification() { |
||
546 | delegateObservable.beginComplexNotification(); |
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547 | } |
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548 | |||
549 | public int countObservers() { |
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550 | return delegateObservable.countObservers();
|
||
551 | } |
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552 | |||
553 | public void deleteObserver(Observer observer) { |
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554 | delegateObservable.deleteObserver(observer); |
||
555 | } |
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556 | |||
557 | public void deleteObserver(Reference ref) { |
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558 | delegateObservable.deleteObserver(ref); |
||
559 | } |
||
560 | |||
561 | public void deleteObservers() { |
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562 | delegateObservable.deleteObservers(); |
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563 | } |
||
564 | |||
565 | public void disableNotifications() { |
||
566 | delegateObservable.disableNotifications(); |
||
567 | } |
||
568 | |||
569 | public void enableNotifications() { |
||
570 | delegateObservable.enableNotifications(); |
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571 | } |
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572 | |||
573 | public void endComplexNotification() { |
||
574 | // We don't want to notify many times in a complex notification
|
||
575 | // scenario, so ignore notifications if in complex.
|
||
576 | // Only one notification will be sent when the complex notification
|
||
577 | // ends.
|
||
578 | delegateObservable |
||
579 | .notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
||
580 | delegateObservable.endComplexNotification(); |
||
581 | } |
||
582 | |||
583 | public boolean inComplex() { |
||
584 | return delegateObservable.inComplex();
|
||
585 | } |
||
586 | |||
587 | public boolean isEnabledNotifications() { |
||
588 | return delegateObservable.isEnabledNotifications();
|
||
589 | } |
||
590 | |||
591 | public void notifyObservers() { |
||
592 | // We don't want to notify many times in a complex notification
|
||
593 | // scenario, so ignore notifications if in complex.
|
||
594 | // Only one notification will be sent when the complex notification
|
||
595 | // ends.
|
||
596 | if (!delegateObservable.inComplex()) {
|
||
597 | delegateObservable.notifyObservers(); |
||
598 | } |
||
599 | } |
||
600 | |||
601 | public void notifyObservers(Object arg) { |
||
602 | if (!delegateObservable.inComplex()) {
|
||
603 | delegateObservable.notifyObservers(arg); |
||
604 | } |
||
605 | } |
||
606 | |||
607 | 43646 | jjdelcerro | @Override
|
608 | 40435 | jjdelcerro | public Object clone() throws CloneNotSupportedException { |
609 | DefaultFeatureReferenceSelection clone = (DefaultFeatureReferenceSelection) super
|
||
610 | .clone(); |
||
611 | // Original observers aren't cloned
|
||
612 | clone.delegateObservable = new DelegateWeakReferencingObservable(clone);
|
||
613 | // Clone internal data
|
||
614 | 43646 | jjdelcerro | clone.selectionData = (SelectionData) this.getData().clone();
|
615 | 40435 | jjdelcerro | // featureStore and helper are already swallow cloned by our parent
|
616 | return clone;
|
||
617 | } |
||
618 | 44435 | jjdelcerro | |
619 | @Override
|
||
620 | public boolean isAvailable() { |
||
621 | if( this.available==null ) { |
||
622 | try {
|
||
623 | FeatureType type = this.featureStore.getDefaultFeatureType();
|
||
624 | this.available = type.supportReferences();
|
||
625 | } catch (DataException ex) {
|
||
626 | this.available = false; |
||
627 | } |
||
628 | } |
||
629 | return this.available; |
||
630 | } |
||
631 | |||
632 | |||
633 | 40767 | jjdelcerro | } |