Mercurial > projects > dwt2
annotate org.eclipse.core.commands/src/org/eclipse/core/commands/CommandManagerEvent.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:23:29 +0100 |
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1 /******************************************************************************* |
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2 * Copyright (c) 2004, 2006 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * Port to the D programming language: |
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11 * Frank Benoit <benoit@tionex.de> |
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12 *******************************************************************************/ |
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13 module org.eclipse.core.commands.CommandManagerEvent; |
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14 |
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15 import org.eclipse.core.commands.CommandManager; |
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16 |
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17 import java.lang.all; |
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18 |
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19 /** |
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20 * <p> |
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21 * An event indicating that the set of defined command identifiers has changed. |
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22 * </p> |
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23 * |
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24 * @since 3.1 |
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25 * @see ICommandManagerListener#commandManagerChanged(CommandManagerEvent) |
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26 */ |
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27 public final class CommandManagerEvent { |
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28 |
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29 /** |
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30 * The bit used to represent whether the given category has become defined. |
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31 * If this bit is not set and there is no category id, then no category has |
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32 * become defined nor undefined. If this bit is not set and there is a |
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33 * category id, then the category has become undefined. |
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34 */ |
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35 private static const int CHANGED_CATEGORY_DEFINED = 1; |
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36 |
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37 /** |
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38 * The bit used to represent whether the given command has become defined. |
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39 * If this bit is not set and there is no command id, then no command has |
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40 * become defined nor undefined. If this bit is not set and there is a |
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41 * command id, then the command has become undefined. |
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42 */ |
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43 private static const int CHANGED_COMMAND_DEFINED = 1 << 1; |
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44 |
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45 /** |
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46 * The bit used to represent whether the given command parameter type has |
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47 * become defined. If this bit is not set and there is no parameter type id, |
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48 * then no parameter type has become defined nor undefined. If this bit is |
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49 * not set and there is a parameter type id, then the parameter type has |
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50 * become undefined. |
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51 * |
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52 * @since 3.2 |
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53 */ |
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54 private static const int CHANGED_PARAMETER_TYPE_DEFINED = 1 << 2; |
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55 |
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56 /** |
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57 * The category identifier that was added or removed from the list of |
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58 * defined category identifiers. This value is <code>null</code> if the |
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59 * list of defined category identifiers did not change. |
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60 */ |
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61 private const String categoryId; |
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62 |
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63 /** |
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64 * A collection of bits representing whether certain values have changed. A |
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65 * bit is set (i.e., <code>1</code>) if the corresponding property has |
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66 * changed. |
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67 */ |
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68 private const int changedValues; |
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69 |
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70 /** |
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71 * The command identifier that was added or removed from the list of defined |
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72 * command identifiers. This value is <code>null</code> if the list of |
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73 * defined command identifiers did not change. |
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74 */ |
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75 private const String commandId; |
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76 |
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77 /** |
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78 * The command parameter type identifier that was added or removed from the |
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79 * list of defined parameter type identifiers. This value is |
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80 * <code>null</code> if the list of defined parameter type identifiers did |
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81 * not change. |
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82 * |
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83 * @since 3.2 |
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84 */ |
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85 private const String parameterTypeId; |
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86 |
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87 /** |
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88 * The command manager that has changed. |
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89 */ |
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90 private const CommandManager commandManager; |
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91 |
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92 /** |
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93 * Creates a new <code>CommandManagerEvent</code> instance to describe |
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94 * changes to commands and/or categories. |
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95 * |
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96 * @param commandManager |
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97 * the instance of the interface that changed; must not be |
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98 * <code>null</code>. |
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99 * @param commandId |
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100 * The command identifier that was added or removed; must not be |
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101 * <code>null</code> if commandIdChanged is <code>true</code>. |
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102 * @param commandIdAdded |
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103 * Whether the command identifier became defined (otherwise, it |
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104 * became undefined). |
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105 * @param commandIdChanged |
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106 * Whether the list of defined command identifiers has changed. |
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107 * @param categoryId |
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108 * The category identifier that was added or removed; must not be |
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109 * <code>null</code> if categoryIdChanged is <code>true</code>. |
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110 * @param categoryIdAdded |
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111 * Whether the category identifier became defined (otherwise, it |
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112 * became undefined). |
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113 * @param categoryIdChanged |
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114 * Whether the list of defined category identifiers has changed. |
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115 */ |
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116 public this(CommandManager commandManager, |
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117 String commandId, bool commandIdAdded, |
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118 bool commandIdChanged, String categoryId, |
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119 bool categoryIdAdded, bool categoryIdChanged) { |
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120 if (commandManager is null) { |
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121 throw new NullPointerException( |
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122 "An event must refer to its command manager"); //$NON-NLS-1$ |
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123 } |
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124 |
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125 if (commandIdChanged && (commandId is null)) { |
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126 throw new NullPointerException( |
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127 "If the list of defined commands changed, then the added/removed command must be mentioned"); //$NON-NLS-1$ |
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128 } |
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129 |
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130 if (categoryIdChanged && (categoryId is null)) { |
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131 throw new NullPointerException( |
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132 "If the list of defined categories changed, then the added/removed category must be mentioned"); //$NON-NLS-1$ |
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133 } |
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134 |
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135 this.commandManager = commandManager; |
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136 this.commandId = commandId; |
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137 this.categoryId = categoryId; |
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138 |
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139 // this constructor only works for changes to commands and categories |
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140 this.parameterTypeId = null; |
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141 |
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142 int changedValues = 0; |
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143 if (categoryIdChanged && categoryIdAdded) { |
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144 changedValues |= CHANGED_CATEGORY_DEFINED; |
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145 } |
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146 if (commandIdChanged && commandIdAdded) { |
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147 changedValues |= CHANGED_COMMAND_DEFINED; |
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148 } |
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149 this.changedValues = changedValues; |
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150 } |
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151 |
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152 /** |
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153 * Creates a new <code>CommandManagerEvent</code> instance to describe |
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154 * changes to command parameter types. |
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155 * |
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156 * @param commandManager |
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157 * the instance of the interface that changed; must not be |
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158 * <code>null</code>. |
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159 * @param parameterTypeId |
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160 * The command parameter type identifier that was added or |
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161 * removed; must not be <code>null</code> if |
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162 * parameterTypeIdChanged is <code>true</code>. |
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163 * @param parameterTypeIdAdded |
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164 * Whether the parameter type identifier became defined |
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165 * (otherwise, it became undefined). |
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166 * @param parameterTypeIdChanged |
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167 * Whether the list of defined parameter type identifiers has |
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168 * changed. |
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169 * |
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170 * @since 3.2 |
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171 */ |
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172 public this(CommandManager commandManager, |
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173 String parameterTypeId, bool parameterTypeIdAdded, |
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174 bool parameterTypeIdChanged) { |
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175 |
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176 if (commandManager is null) { |
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177 throw new NullPointerException( |
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178 "An event must refer to its command manager"); //$NON-NLS-1$ |
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179 } |
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180 |
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181 if (parameterTypeIdChanged && (parameterTypeId is null)) { |
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182 throw new NullPointerException( |
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183 "If the list of defined command parameter types changed, then the added/removed parameter type must be mentioned"); //$NON-NLS-1$ |
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184 } |
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185 |
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186 this.commandManager = commandManager; |
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187 this.commandId = null; |
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188 this.categoryId = null; |
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189 |
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190 this.parameterTypeId = parameterTypeId; |
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191 |
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192 int changedValues = 0; |
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193 if (parameterTypeIdChanged && parameterTypeIdAdded) { |
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194 changedValues |= CHANGED_PARAMETER_TYPE_DEFINED; |
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195 } |
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196 |
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197 this.changedValues = changedValues; |
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198 } |
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199 |
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200 /** |
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201 * Returns the category identifier that was added or removed. |
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202 * |
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203 * @return The category identifier that was added or removed; may be |
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204 * <code>null</code>. |
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205 */ |
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206 public final String getCategoryId() { |
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207 return categoryId; |
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208 } |
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209 |
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210 /** |
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211 * Returns the command identifier that was added or removed. |
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212 * |
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213 * @return The command identifier that was added or removed; may be |
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214 * <code>null</code>. |
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215 */ |
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216 public final String getCommandId() { |
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217 return commandId; |
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218 } |
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219 |
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220 /** |
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221 * Returns the instance of the interface that changed. |
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222 * |
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223 * @return the instance of the interface that changed. Guaranteed not to be |
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224 * <code>null</code>. |
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225 */ |
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226 public final CommandManager getCommandManager() { |
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227 return commandManager; |
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228 } |
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229 |
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230 /** |
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231 * Returns the command parameter type identifier that was added or removed. |
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232 * |
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233 * @return The command parameter type identifier that was added or removed; |
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234 * may be <code>null</code>. |
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235 * |
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236 * @since 3.2 |
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237 */ |
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238 public final String getParameterTypeId() { |
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239 return parameterTypeId; |
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240 } |
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241 |
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242 /** |
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243 * Returns whether the list of defined category identifiers has changed. |
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244 * |
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245 * @return <code>true</code> if the list of category identifiers has |
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246 * changed; <code>false</code> otherwise. |
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247 */ |
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248 public final bool isCategoryChanged() { |
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249 return (categoryId !is null); |
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250 } |
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251 |
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252 /** |
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253 * Returns whether the category identifier became defined. Otherwise, the |
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254 * category identifier became undefined. |
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255 * |
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256 * @return <code>true</code> if the category identifier became defined; |
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257 * <code>false</code> if the category identifier became undefined. |
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258 */ |
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259 public final bool isCategoryDefined() { |
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260 return (((changedValues & CHANGED_CATEGORY_DEFINED) !is 0) && (categoryId !is null)); |
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261 } |
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262 |
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263 /** |
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264 * Returns whether the list of defined command identifiers has changed. |
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265 * |
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266 * @return <code>true</code> if the list of command identifiers has |
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267 * changed; <code>false</code> otherwise. |
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268 */ |
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269 public final bool isCommandChanged() { |
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270 return (commandId !is null); |
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271 } |
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272 |
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273 /** |
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274 * Returns whether the command identifier became defined. Otherwise, the |
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275 * command identifier became undefined. |
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276 * |
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277 * @return <code>true</code> if the command identifier became defined; |
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278 * <code>false</code> if the command identifier became undefined. |
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279 */ |
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280 public final bool isCommandDefined() { |
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281 return (((changedValues & CHANGED_COMMAND_DEFINED) !is 0) && (commandId !is null)); |
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282 } |
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283 |
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284 /** |
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285 * Returns whether the list of defined command parameter type identifiers |
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286 * has changed. |
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287 * |
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288 * @return <code>true</code> if the list of command parameter type |
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289 * identifiers has changed; <code>false</code> otherwise. |
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290 * |
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291 * @since 3.2 |
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292 */ |
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293 public final bool isParameterTypeChanged() { |
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294 return (parameterTypeId !is null); |
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295 } |
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296 |
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297 /** |
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298 * Returns whether the command parameter type identifier became defined. |
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299 * Otherwise, the command parameter type identifier became undefined. |
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300 * |
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301 * @return <code>true</code> if the command parameter type identifier |
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302 * became defined; <code>false</code> if the command parameter |
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303 * type identifier became undefined. |
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304 * |
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305 * @since 3.2 |
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306 */ |
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307 public final bool isParameterTypeDefined() { |
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308 return (((changedValues & CHANGED_PARAMETER_TYPE_DEFINED) !is 0) && (parameterTypeId !is null)); |
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309 } |
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310 } |