Plug-in metedata tell eclipse runtime kernel how to create a expected object and set its perperties,
and assign these objects to defined interfce object, make these interface objects
communicate with each other.
org.eclipse.compare/plugin.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <?eclipse version="3.0"?> 3 4 <plugin> 5 <!-- Compare extension point definitions --> 6 <extension-point id="streamMergers" name="%streamMergers" schema="schema/streamMergers.exsd"/> 7 <extension-point id="structureCreators" name="%structureCreators" schema="schema/structureCreators.exsd"/> 8 <extension-point id="structureMergeViewers" name="%structureMergeViewers" schema="schema/structureMergeViewers.exsd"/> 9 <extension-point id="contentMergeViewers" name="%contentMergeViewers" schema="schema/contentMergeViewers.exsd"/> 10 <extension-point id="contentViewers" name="%contentViewers" schema="schema/contentViewers.exsd"/> 11 <!-- Extensions --> 12 <extension 13 point="org.eclipse.ui.themes"> 14 <themeElementCategory 15 label="%textCompareAppearance.label" 16 id="org.eclipse.compare.contentmergeviewer.TextMergeViewer"> 17 </themeElementCategory> 18 <colorDefinition 19 label="%compareIncomingColor.label" 20 categoryId="org.eclipse.compare.contentmergeviewer.TextMergeViewer" 21 value="COLOR_BLUE" 22 id="INCOMING_COLOR"> 23 <description> 24 %compareIncomingColor.description 25 </description> 26 </colorDefinition> 27 <colorDefinition 28 label="%compareOutgoingColor.label" 29 categoryId="org.eclipse.compare.contentmergeviewer.TextMergeViewer" 30 value="COLOR_BLACK" 31 id="OUTGOING_COLOR"> 32 <description> 33 %compareOutgoingColor.description 34 </description> 35 </colorDefinition> 36 <colorDefinition 37 label="%compareConflictColor.label" 38 categoryId="org.eclipse.compare.contentmergeviewer.TextMergeViewer" 39 value="COLOR_RED" 40 id="CONFLICTING_COLOR"> 41 <description> 42 %compareConflictColor.description 43 </description> 44 </colorDefinition> 45 <colorDefinition 46 label="%compareResolvedColor.label" 47 categoryId="org.eclipse.compare.contentmergeviewer.TextMergeViewer" 48 value="COLOR_GREEN" 49 id="RESOLVED_COLOR"> 50 <description> 51 %compareResolvedColor.description 52 </description> 53 </colorDefinition> 54 <fontDefinition 55 label="%compareFontDefiniton.label" 56 defaultsTo="org.eclipse.jface.textfont" 57 categoryId="org.eclipse.compare.contentmergeviewer.TextMergeViewer" 58 id="org.eclipse.compare.contentmergeviewer.TextMergeViewer"> 59 <description> 60 %compareFontDefiniton.description 61 </description> 62 </fontDefinition> 63 </extension> 64 <extension 65 id="rejectedPatchMarker" 66 name="%rejectedPatchMarker.name" 67 point="org.eclipse.core.resources.markers"> 68 <super 69 type="org.eclipse.core.resources.taskmarker"> 70 </super> 71 <persistent 72 value="true"> 73 </persistent> 74 </extension> 75 <extension 76 point="org.eclipse.ui.editors"> 77 <editor 78 name="%defaultCompareEditor.name" 79 icon="$nl$/icons/full/eview16/compare_view.gif" 80 contributorClass="org.eclipse.compare.internal.CompareEditorContributor" 81 class="org.eclipse.compare.internal.CompareEditor" 82 id="org.eclipse.compare.CompareEditor"> 83 </editor> 84 </extension> 85 <extension 86 point="org.eclipse.ui.preferencePages"> 87 <page 88 name="%ComparePreferencePage.name" 89 category="org.eclipse.ui.preferencePages.Workbench" 90 class="org.eclipse.compare.internal.ComparePreferencePage" 91 id="org.eclipse.compare.internal.ComparePreferencePage"> 92 <keywordReference id="org.eclipse.compare.general"/> 93 </page> 94 </extension> 95 <extension 96 point="org.eclipse.ui.keywords"> 97 <keyword 98 label="%preferenceKeywords.general" 99 id="org.eclipse.compare.general"/> 100 </extension> 101 <!-- commands and their bindings --> 102 <extension 103 point="org.eclipse.ui.contexts"> 104 <context 105 name="%context.name" 106 description="%context.description" 107 parentId="org.eclipse.ui.contexts.window" 108 id="org.eclipse.compare.compareEditorScope"> 109 </context> 110 </extension> 111 <extension 112 point="org.eclipse.ui.commands"> 113 <category 114 name="%compareCategory.name" 115 description="%compareCategory.description" 116 id="org.eclipse.compare.ui.category.compare"> 117 </category> 118 <command 119 name="%Command.copyRightToLeft.name" 120 description="%Command.copyRightToLeft.description" 121 categoryId="org.eclipse.compare.ui.category.compare" 122 id="org.eclipse.compare.copyRightToLeft"> 123 </command> 124 <command 125 name="%Command.copyLeftToRight.name" 126 description="%Command.copyLeftToRight.description" 127 categoryId="org.eclipse.compare.ui.category.compare" 128 id="org.eclipse.compare.copyLeftToRight"> 129 </command> 130 <command 131 name="%Command.copyAllRightToLeft.name" 132 description="%Command.copyAllRightToLeft.description" 133 categoryId="org.eclipse.compare.ui.category.compare" 134 id="org.eclipse.compare.copyAllRightToLeft"> 135 </command> 136 <command 137 name="%Command.copyAllLeftToRight.name" 138 description="%Command.copyAllLeftToRight.description" 139 categoryId="org.eclipse.compare.ui.category.compare" 140 id="org.eclipse.compare.copyAllLeftToRight"> 141 </command> 142 <command 143 name="%Command.selectNextChange.name" 144 description="%Command.selectNextChange.description" 145 categoryId="org.eclipse.compare.ui.category.compare" 146 id="org.eclipse.compare.selectNextChange"> 147 </command> 148 <command 149 name="%Command.selectPreviousChange.name" 150 description="%Command.selectPreviousChange.description" 151 categoryId="org.eclipse.compare.ui.category.compare" 152 id="org.eclipse.compare.selectPreviousChange"> 153 </command> 154 <command 155 categoryId="org.eclipse.compare.ui.category.compare" 156 description="%Command.ignoreWhiteSpace.description" 157 id="org.eclipse.compare.ignoreWhiteSpace" 158 name="%Command.ignoreWhiteSpace.name"> 159 </command> 160 <command 161 categoryId="org.eclipse.compare.ui.category.compare" 162 defaultHandler="org.eclipse.compare.internal.CompareWithOtherResourceHandler" 163 description="%Command.compareWithOther.description" 164 id="org.eclipse.compare.compareWithOther" 165 name="%Command.compareWithOther.name"> 166 </command> 167 </extension> 168 <extension 169 point="org.eclipse.ui.popupMenus"> 170 <objectContribution 171 objectClass="org.eclipse.core.resources.mapping.ResourceMapping" 172 adaptable="true" 173 id="org.eclipse.compare.MenuGroups"> 174 <menu 175 label="%ReplaceWithMenu.label" 176 path="additions" 177 id="replaceWithMenu"> 178 <separator 179 name="replaceWithGroup"> 180 </separator> 181 </menu> 182 <menu 183 label="%CompareWithMenu.label" 184 path="additions" 185 id="compareWithMenu"> 186 <separator 187 name="compareWithGroup"> 188 </separator> 189 </menu> 190 </objectContribution> 191 <objectContribution 192 objectClass="org.eclipse.core.resources.IResource" 193 adaptable="true" 194 id="org.eclipse.compare.CompareAction"> 195 <action 196 label="%CompareWithEachOtherAction.label" 197 tooltip="%CompareWithEachOtherAction.tooltip" 198 class="org.eclipse.compare.internal.CompareAction" 199 menubarPath="compareWithMenu/compareWithGroup" 200 enablesFor="2+" 201 id="compareWithEachOther"> 202 </action> 203 </objectContribution> 204 <objectContribution 205 objectClass="org.eclipse.core.resources.IFile" 206 adaptable="true" 207 id="org.eclipse.compare.ReplaceWithEditionAction"> 208 <menu 209 label="%ReplaceWithMenu.label" 210 path="additions" 211 id="replaceWithMenu"> 212 <separator 213 name="replaceWithGroup"> 214 </separator> 215 </menu> 216 <action 217 class="org.eclipse.compare.internal.ReplaceWithEditionAction" 218 enablesFor="1" 219 helpContextId="org.eclipse.compare.replace_with_edition_action_context" 220 id="replaceFromHistory" 221 label="%ReplaceFromHistoryAction.label" 222 menubarPath="replaceWithMenu/replaceWithGroup" 223 tooltip="%ReplaceFromHistoryAction.tooltip"> 224 </action> 225 <action 226 label="%ReplaceWithPreviousFromHistoryAction.label" 227 tooltip="%ReplaceWithPreviousFromHistoryAction.tooltip" 228 class="org.eclipse.compare.internal.ReplaceWithPreviousEditionAction" 229 menubarPath="replaceWithMenu/replaceWithGroup" 230 enablesFor="1" 231 id="replaceWithPreviousFromHistory"> 232 </action> 233 </objectContribution> 234 <objectContribution 235 objectClass="org.eclipse.core.resources.IFile" 236 adaptable="true" 237 id="org.eclipse.compare.CompareWithEditionAction"> 238 <menu 239 label="%CompareWithMenu.label" 240 path="additions" 241 id="compareWithMenu"> 242 <separator 243 name="compareWithGroup"> 244 </separator> 245 </menu> 246 <action 247 label="%CompareWithHistoryAction.label" 248 tooltip="%CompareWithHistoryAction.tooltip" 249 class="org.eclipse.compare.internal.CompareWithEditionAction" 250 menubarPath="compareWithMenu/compareWithGroup" 251 enablesFor="1" 252 id="compareWithHistory"> 253 </action> 254 </objectContribution> 255 <objectContribution 256 objectClass="org.eclipse.core.resources.IContainer" 257 adaptable="true" 258 id="org.eclipse.compare.AddFromHistoryAction"> 259 <action 260 label="%addFromHistoryAction.label" 261 tooltip="%addFromHistoryAction.tooltip" 262 class="org.eclipse.compare.internal.AddFromHistoryAction" 263 menubarPath="replaceWithMenu" 264 enablesFor="1" 265 id="addFromHistoryAction"> 266 </action> 267 </objectContribution> 268 </extension> 269 <extension 270 point="org.eclipse.compare.streamMergers"> 271 <streamMerger 272 extensions="txt" 273 class="org.eclipse.compare.internal.merge.TextStreamMerger" 274 id="org.eclipse.compare.internal.merge.TextStreamMerger"> 275 </streamMerger> 276 <contentTypeBinding 277 contentTypeId="org.eclipse.core.runtime.text" 278 streamMergerId="org.eclipse.compare.internal.merge.TextStreamMerger"> 279 </contentTypeBinding> 280 </extension> 281 282 <extension 283 point="org.eclipse.compare.structureCreators"> 284 <structureCreator 285 extensions="zip" 286 class="org.eclipse.compare.ZipFileStructureCreator" 287 id="org.eclipse.compare.ZipFileStructureCreator"> 288 </structureCreator> 289 </extension> 290 <extension 291 point="org.eclipse.compare.contentMergeViewers"> 292 <viewer 293 class="org.eclipse.compare.internal.BinaryCompareViewerCreator" 294 extensions="class,exe,dll,binary,zip,jar" 295 id="org.eclipse.compare.BinaryCompareViewerCreator" 296 label="%BinaryCompare.label"> 297 </viewer> 298 <viewer 299 class="org.eclipse.compare.internal.TextMergeViewerCreator" 300 extensions="txt" 301 id="org.eclipse.compare.TextMergeViewerCreator" 302 label="%TextCompare.label"> 303 </viewer> 304 <viewer 305 class="org.eclipse.compare.internal.ImageMergeViewerCreator" 306 extensions="gif,jpg,jpeg,png,bmp,ico,tif,tiff" 307 id="org.eclipse.compare.ImageMergeViewerCreator" 308 label="%ImageCompare.label"> 309 </viewer> 310 <contentTypeBinding 311 contentTypeId="org.eclipse.core.runtime.text" 312 contentMergeViewerId="org.eclipse.compare.TextMergeViewerCreator"> 313 </contentTypeBinding> 314 </extension> 315 <extension 316 point="org.eclipse.compare.contentViewers"> 317 <viewer 318 extensions="txt" 319 class="org.eclipse.compare.internal.TextViewerCreator" 320 id="org.eclipse.compare.TextViewerCreator"> 321 </viewer> 322 <contentTypeBinding 323 contentTypeId="org.eclipse.core.runtime.text" 324 contentViewerId="org.eclipse.compare.TextViewerCreator"> 325 </contentTypeBinding> 326 </extension> 327 <extension 328 point="org.eclipse.core.runtime.preferences"> 329 <initializer 330 class="org.eclipse.compare.internal.ComparePreferenceInitializer"> 331 </initializer> 332 </extension> 333 <extension 334 point="org.eclipse.core.runtime.adapters"> 335 <factory 336 adaptableType="org.eclipse.compare.CompareEditorInput" 337 class="org.eclipse.compare.internal.AdapterFactory"> 338 <adapter 339 type="org.eclipse.ui.IContributorResourceAdapter"> 340 </adapter> 341 </factory> 342 </extension> 343 </plugin>
- The description of extension-point which is contributed to other plug-ins.
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1 <extension-point id="streamMergers" name="%streamMergers" schema="schema/streamMergers.exsd"/>
<extension-point> define a extension which can be as a extension point for other plug-in. Provide the features for other plug-ins.Now you can find detailed information of the StreamMergers provided by org.eclipse.compare plug-in as follows:
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1 public interface IStreamMerger { 2 public static final int OK= IStatus.OK; 3 public static final int CONFLICT= 1; 4 public static final int INTERNAL_ERROR= 2; 5 IStatus merge(OutputStream output, String outputEncoding, 6 InputStream ancestor, String ancestorEncoding, 7 InputStream target, String targetEncoding, 8 InputStream other, String otherEncoding, 9 IProgressMonitor monitor); 10 }
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Stream Merger Identifier: org.eclipse.compare.streamMergers Since: 3.0 Description: This extension point allows a plug-in to register a stream merger for specific content types. The stream merger is expected to perform a three-way merge on three input streams and writes the result to an output stream. The extension point must implement the interface org.eclipse.compare.IStreamMerger. Configuration Markup: <!ELEMENT extension (streamMerger* , contentTypeBinding*)> <!ATTLIST extension point CDATA #REQUIRED id CDATA #IMPLIED name CDATA #IMPLIED > point - a fully qualified identifier of the target extension point id - an optional identifier of the extension instance name - an optional name of the extension instance <!ELEMENT streamMerger EMPTY> <!ATTLIST streamMerger id CDATA #REQUIRED class CDATA #REQUIRED extensions CDATA #IMPLIED > id - a unique identifier that can be used to reference the stream merger class - a fully qualified name of a class that implements org.eclipse.compare.IStreamMerger extensions - a comma separated list of file extensions e.g. "java, properties" <!ELEMENT contentTypeBinding EMPTY> <!ATTLIST contentTypeBinding contentTypeId IDREF #REQUIRED streamMergerId IDREF #REQUIRED > A contentTypeBinding binds a stream merger to a content type. contentTypeId - The id of a content type defined using the org.eclipse.core.contenttype.contentTypes extension point. streamMergerId - The id of a stream merger defined using the streamMerger element of this extension point (i.e. org.eclipse.compare.streamMergers) Examples: The following is an example of a stream merger for property files (extension "properties"): <extension point = "org.eclipse.compare.streamMergers"> <streamMerger id="org.eclipse.compare.internal.merge.TextStreamMerger" class="org.eclipse.compare.internal.merge.TextStreamMerger" extensions="properties" /> </extension> API Information: The contributed class must implement org.eclipse.compare.IStreamMerger Supplied Implementation: The Compare UI plugin defines a stream merger for line oriented text files.
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The definition of <extension point>
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1 <extension point="org.eclipse.ui.themes">
<extension point=""> indicates that this plug-in want to extend from that point, add additional features or want that point service for this plug-in.Now we have a look at extenion-point of org.eclipse.ui.themes.
- Take a look at interface ITheme.when we need a Theme object, elipse kernel can load plug-ins which define all properties of Theme through plug-in.xml of this exclipse plug-in.
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1 package org.eclipse.ui.themes; 2 import java.util.Set; 3 import org.eclipse.jface.resource.ColorRegistry; 4 import org.eclipse.jface.resource.FontRegistry; 5 import org.eclipse.jface.util.IPropertyChangeListener; 6 public interface ITheme { 7 void addPropertyChangeListener(IPropertyChangeListener listener); 8 void dispose(); 9 boolean getBoolean(String key); 10 ColorRegistry getColorRegistry(); 11 FontRegistry getFontRegistry(); 12 String getId(); 13 public int getInt(String key); 14 String getLabel(); 15 String getString(String key); 16 Set keySet(); 17 void removePropertyChangeListener(IPropertyChangeListener listener); 18 }
Configuration Markup:
<!ELEMENT extension (theme* , colorDefinition* , fontDefinition* , themeElementCategory* , data* , categoryPresentationBinding*)>
<!ATTLIST extension point CDATA #REQUIRED id CDATA #IMPLIED name CDATA #IMPLIED >
- point - a fully qualified identifier of the target extension point
- id - an optional identifier of the extension instance
- name - an optional name of the extension instance
<!ELEMENT theme (colorOverride* , fontOverride* , description? , data*)>
<!ATTLIST theme id CDATA #REQUIRED name CDATA #IMPLIED >
A collection of font, color and data overrides. Such a collection may be used to alter the appearance of the workbench. Many theme elements may exist with the same id. This allows component authors to contribute to existing themes.
- id - a unique name that will be used to identify this theme
- name - a translatable name of the theme to be presented to the user.
At least one theme definition with any given id should contain this attribute.
<!ELEMENT themeElementCategory (description?)>
<!ATTLIST themeElementCategory id CDATA #REQUIRED parentId IDREF #IMPLIED class CDATA #IMPLIED label CDATA #IMPLIED >
A logical grouping of theme element definitions. This category may include colors and fonts.
- id - the id for this category
- parentId - the id of the parent category, if any.
- class - a class that implements org.eclipse.ui.themes.IThemePreview
- label - a translatable name of the theme element category to be presented to the user
<!ELEMENT colorDefinition (colorFactory? , colorValue* , description?)>
<!ATTLIST colorDefinition id CDATA #REQUIRED label CDATA #REQUIRED defaultsTo CDATA #IMPLIED value CDATA #IMPLIED categoryId IDREF #IMPLIED colorFactory CDATA #IMPLIED isEditable (true | false) >
A symbolic color definition.
- id - a unique id that can be used to identify this color definition.
- label - a translatable name of the color to be presented to the user.
- defaultsTo - the id of another color definition that is the default setting for the receiver. When there is no preference for this color the color registry will have the value of defaultsTo set for it in the registry. Only one of defaultsTo, value or colorFactory may be defined.
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value - The default value of this color. The value may be specified in the following ways:
- a String containing comma separated integers in the form red,green,blue
- a String that maps to an SWT color constant (ie: COLOR_RED).
- Only one of defaultsTo, value or colorFactory may be defined. If value is specified, additional value definitions may be specified on a per platform/windowing system basis via the colorValue element.
- categoryId - the optional id of the themeElementCategory this color belongs to.
- colorFactory - a class that implements org.eclipse.ui.themes.IColorFactory. This may be used instead of value to specify the default value of the color. Please be advised that this should be used with caution - usage of this attribute will cause plugin activation on workbench startup.
- isEditable - whether the user should be allowed to edit this color in the preference page. If this is false then the contribution is not shown to the user.
- <!ELEMENT fontDefinition (fontValue* , description?)> <!ATTLIST fontDefinition id CDATA #REQUIRED label CDATA #REQUIRED value CDATA #IMPLIED categoryId IDREF #IMPLIED defaultsTo CDATA #IMPLIED isEditable (true | false) > A symbolic font definition.
- id - a unique name that can be used to identify this font definition. label - a translatable name of the font to be presented to the user.
- value - the font value. This is in the form: fontname-style-height where fontname is the name of a font, style is a font style (one of "regular", "bold", "italic", or "bold italic") and height is an integer representing the font height.