Examples of org.eclipse.core.runtime.Plugin

org.eclipse.core.runtime.Plugin
other initialization } // ... other methods } In the above example, a call to MyPluginClass.getInstance() will always return an initialized instance of MyPluginClass.

Constructors and life cycle methods
If the plugin.xml of a plug-in indicates <?eclipse version="3.0"?> and its prerequisite list includes org.eclipse.core.runtime, the default constructor of the plug-in class is used and {@link #start(BundleContext)} and {@link #stop(BundleContext)} arecalled as life cycle methods.
If the plugin.xml of a plug-in indicates <?eclipse version="3.0"?> and its prerequisite list includes org.eclipse.core.runtime.compatibility, the {@link #Plugin(IPluginDescriptor)}constructor is used and {@link #startup()} and {@link #shutdown()} are called as life cycle methods.Note that in this situation, start() is called before startup() and stop() is called after shutdown.
If the plugin.xml of your plug-in does not indicate <?eclipse version="3.0"?> it is therefore not a 3.0 plug-in. Consequently the {@link #Plugin(IPluginDescriptor)} is used and {@link #startup()} and {@link #shutdown()} are called as life cycle methods.
Since Eclipse 3.0 APIs of the Plugin class can be called only when the Plugin is in an active state, i.e., after it was started up and before it is shutdown. In particular, it means that Plugin APIs should not be called from overrides of {@link #Plugin()}.

    }
    return initializer;
  }


  private static ClasspathContainerInitializer computeClasspathContainerInitializer(String containerID) {
    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPCONTAINER_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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   * none was found.
   * @since 2.1
    */
  public static ClasspathVariableInitializer getClasspathVariableInitializer(String variable){


    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPVARIABLE_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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   * 
   * @deprecated Marked deprecated to supress warnings. This class is added to support
   * backward compatibility only and should not be used in any new code.
   */
  public Object init(Object object, String name) {
    Plugin plugin = null;
    if (object instanceof Plugin)
      plugin = (Plugin) object;
    // No extension exists. Get the plug-in object and call #initializeDefaultPluginPreferences().
    // We can only call this if the runtime compatibility layer is installed.
    if (plugin == null && InternalPlatform.getDefault().getBundle(org.eclipse.core.internal.runtime.CompatibilityHelper.PI_RUNTIME_COMPATIBILITY) != null)
      plugin = Platform.getPlugin(name);
    if (plugin == null) {
      if (InternalPlatform.DEBUG_PLUGIN_PREFERENCES)
        InternalPlatform.message("No plug-in object available to set plug-in default preference overrides for:" + name); //$NON-NLS-1$
      return null;
    }
    if (InternalPlatform.DEBUG_PLUGIN_PREFERENCES)
      InternalPlatform.message("Applying plug-in default preference overrides for plug-in: " + plugin.getDescriptor().getUniqueIdentifier()); //$NON-NLS-1$


    plugin.internalInitializeDefaultPluginPreferences();
    return plugin;
  }

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    }
    return initializer;
  }


  private static ClasspathContainerInitializer computeClasspathContainerInitializer(String containerID) {
    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPCONTAINER_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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    if (variablePath != null && variablePath != JavaModelManager.VARIABLE_INITIALIZATION_IN_PROGRESS) {
      return null;
    }


    // Search for extension point to get the possible deprecation message
    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPVARIABLE_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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   * none was found.
   * @since 2.1
    */
  public static ClasspathVariableInitializer getClasspathVariableInitializer(String variable){


    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPVARIABLE_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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   */
  public TextEditorPreferencePage() {
    super(GRID);


    setDescription(TextEditorMessages.PreferencePage_description);
    Plugin plugin= Platform.getPlugin("org.eclipse.ui.workbench"); //$NON-NLS-1$
    if (plugin instanceof AbstractUIPlugin) {
      AbstractUIPlugin uiPlugin= (AbstractUIPlugin) plugin;
      setPreferenceStore(uiPlugin.getPreferenceStore());
    }
  }

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   *
   * @param target the target preference store
   * @param targetKey the key to be used in the target preference store
   */
  public static void startPropagate(IPreferenceStore target, String targetKey) {
    Plugin plugin= Platform.getPlugin("org.eclipse.ui.workbench"); //$NON-NLS-1$
    if (plugin instanceof AbstractUIPlugin) {
      AbstractUIPlugin uiPlugin= (AbstractUIPlugin) plugin;
      IPreferenceStore store= uiPlugin.getPreferenceStore();
      if (store != null)
        PropagatingFontFieldEditor.startPropagate(store, JFaceResources.TEXT_FONT, target, targetKey);

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    this.menu = menu;
  }
  
  public void addRecentFile(String fileName, String menuID, String recentMenuID, String recentFilesKey, String menuLabel, PropertyChangeListener listener) {
    
    Plugin plugin = Activator.getDefault();
    Preferences prefs = plugin.getPluginPreferences();


    String recentFiles = prefs.getString(recentFilesKey);


    if (recentFiles == null) {
      recentFiles = "";
    }


    String[] recentFilesArray = recentFiles.split(";");
    String[] newFilesArray = new String[10];


    // put new file
    newFilesArray[0] = fileName;


    // move files
    for (int i = 0; i < 9; i++) {


      // check files
      if (i >= recentFilesArray.length) {
        break;
      }


      // check if file has not been already added
      if (!fileName.equals(recentFilesArray[i])) {
        newFilesArray[i + 1] = recentFilesArray[i];
      }
    }


    // now join
    recentFiles = "";
    for (String file : newFilesArray) {
      if (file != null && file != "") {
        recentFiles += file + ";";
      }
    }


    // store preference
    prefs.setValue(recentFilesKey, recentFiles);
    plugin.savePluginPreferences();
    
    // rebuild menu
    rebuildRecentFiles(menuID, recentMenuID, recentFilesKey, menuLabel, listener);
  }

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    fileMenu.insert(fileMenu.getSize() - 1, viewMenu);
    
  }


  public String[] getRecentFiles(String recentFilesKey) {
    Plugin plugin = Activator.getDefault();
    Preferences prefs = plugin.getPluginPreferences();


    String recentFiles = prefs.getString(recentFilesKey);


    return recentFiles.split(";");
  }

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