Examples of org.eclipse.core.commands.Command

org.eclipse.core.commands.Command

A command is an abstract representation for some semantic behaviour. It is not the actual implementation of this behaviour, nor is it the visual appearance of this behaviour in the user interface. Instead, it is a bridge between the two.

The concept of a command is based on the command design pattern. The notable difference is how the command delegates responsibility for execution. Rather than allowing concrete subclasses, it uses a handler mechanism (see the handlers extension point). This provides another level of indirection.

A command will exist in two states: defined and undefined. A command is defined if it is declared in the XML of a resolved plug-in. If the plug-in is unloaded or the command is simply not declared, then it is undefined. Trying to reference an undefined command will succeed, but trying to access any of its functionality will fail with a NotDefinedException. If you need to know when a command changes from defined to undefined (or vice versa), then attach a command listener.

Commands are mutable and will change as their definition changes.
@since 3.1

    resetToggleCommand("com.subgraph.vega.commands.proxyPassthrough", proxyService.isPassthrough());
  }
  
  private void resetToggleCommand(String commandId, boolean value) {
    final ICommandService service = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class);
    final Command command = service.getCommand(commandId);
    if(command == null) {
      return;
    }
    final State state = command.getState("org.eclipse.ui.commands.toggleState");
    if(state != null) {
      state.setValue(value);
    }
  }

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      }


      // Retrieve the cached command from the command config.
      // If it has not been initialized before, it will be created on demand and
      // stored in the command config.
      Command command = this.getCommandFromCommandConfig(commandConfig);
      getLogFacility().logDebug(
          "got command for " + commandConfig.getCommand() + ": " + command);
      getLogFacility().logDebug("command.isDefined(): " + command.isDefined());


      CommandContributionItemParameter commandContributionItemParameter = new CommandContributionItemParameter( //
          this.getServiceLocator(), // IServiceLocator serviceLocator,
          command.getId(), // String id,
          command.getId(), // String commandId,
          CommandContributionItem.STYLE_PUSH // int style)
      );
      commandContributionItemParameter.label = this
          .getNameFromCommandConfig(commandConfig);
      contributionItemList.add(this

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        .intToString(getNextCustomCommandIdNumber());
    String commandId = "de.bastiankrol.startexplorer.customCommand"
        + commandNumberString;
    ICommandService commandService = this
        .getCommandService(getServiceLocator());
    Command command = commandService.getCommand(commandId);
    String commandName = "StartExplorer Custom Command " + commandNumberString;
    getLogFacility().logDebug(
        "defining command for " + commandConfig.getCommand() + " as "
            + commandName);
    command.define(commandName, this.getNameFromCommandConfig(commandConfig),
        this.getLazyInitCategory(commandService));
    this.activateHandler(commandConfig, commandId);
    getLogFacility().logDebug(
        "createCommand(" + commandConfig.getCommand() + ") done");
    return command;

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    getLogFacility().logDebug("doCleanup(" + atPluginStop + ") start");
    if (this.commandConfigList != null)
    {
      for (CommandConfig commandConfig : this.commandConfigList)
      {
        Command eclipseCommandForResourceViewNoInit = commandConfig
            .getEclipseCommandForResourceViewNoInit();
        this.disposeCommand(eclipseCommandForResourceViewNoInit, atPluginStop);
        commandConfig.deleteEclipseCommandForResourceView();
        deactivateHandler(commandConfig.getHandlerActivationForResourceView(),
            commandConfig.getNameForResourcesMenu());
        commandConfig.setHandlerActivationForResourceView(null);


        Command eclipseCommandForEditorNoInit = commandConfig
            .getEclipseCommandForEditorNoInit();
        this.disposeCommand(eclipseCommandForEditorNoInit, atPluginStop);
        commandConfig.deleteEclipseCommandForEditor();
        deactivateHandler(commandConfig.getHandlerActivationForEditor(),
            commandConfig.getNameForTextSelectionMenu());

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  private void createSkeleton(String containerName, String projectName) throws CoreException {
    ICommandService cmdService = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class);
    IHandlerService handlerService = (IHandlerService) PlatformUI.getWorkbench().getService(IHandlerService.class);
    
    // get the command
    Command cmd = cmdService.getCommand("q_impress.pmi.plugin.commands.createProjectSkeleton");
    IParameter rootParm = null;
    IParameter projectNameParm = null;
    try {
      rootParm = cmd.getParameter("q_impress.pmi.plugin.commands.createProjectSkeleton.root");
      projectNameParm = cmd.getParameter("q_impress.pmi.plugin.commands.createProjectSkeleton.projectName");
    } catch (NotDefinedException e) {
      this.throwCoreException("Unable to execute command, invalid parameter :" + e.getMessage(), e);
    }


    // parametrize it

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  private void createEmptyModel(String containerName, String fileName) throws CoreException {
    ICommandService cmdService = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class);
    IHandlerService handlerService = (IHandlerService) PlatformUI.getWorkbench().getService(IHandlerService.class);
    
    // get the command
    Command createPmiFileCmd = cmdService.getCommand("q_impress.pmi.plugin.commands.createEmptyPerformanceModel");
    IParameter dirParm = null;
    IParameter fileParm = null;
    try {
      dirParm = createPmiFileCmd.getParameter("q_impress.pmi.plugin.commands.createEmptyPerformanceModel.directory");
      fileParm = createPmiFileCmd.getParameter("q_impress.pmi.plugin.commands.createEmptyPerformanceModel.filename");
    } catch (NotDefinedException e) {
      this.throwCoreException("Unable to execute command, invalid parameter :" + e.getMessage(), e);
    }


    // parametrize it

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    ICommandService cmdService = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class);
    IHandlerService handlerService = (IHandlerService) PlatformUI.getWorkbench().getService(IHandlerService.class);
    
    // get the command
    Command command = cmdService.getCommand(AddUmlResourceHandler.COMMAND_ID);
    IParameter umlPathParm = null;
    IParameter doBundlingParm = null;
    IParameter targetModelFileParm = null;
    try {
      umlPathParm = command.getParameter(AddUmlResourceHandler.PARAM_UML_RESOURCE_PATH);
      doBundlingParm = command.getParameter(AddUmlResourceHandler.PARAM_DO_BUNDLING);
      targetModelFileParm = command.getParameter(AddUmlResourceHandler.PARAM_TARGET_MODEL_PATH);
    } catch (NotDefinedException e) {
      this.throwCoreException("Unable to execute command, invalid parameter :" + e.getMessage(), e);
    }
  
    // parametrize it

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   */
  protected ExecutionEvent createExecutionEvent() {
    IServiceLocator locator = getServiceLocator();
    ICommandService srv = CommonUtils.getService(locator, ICommandService.class);
    IHandlerService hsrv = CommonUtils.getService(locator, IHandlerService.class);
    Command command = srv.getCommand(commandId);


    ExecutionEvent event = hsrv.createExecutionEvent(command, null);
    if (event.getApplicationContext() instanceof IEvaluationContext)
      ((IEvaluationContext) event.getApplicationContext()).addVariable(
          ISources.ACTIVE_CURRENT_SELECTION_NAME, mySelection);

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  public final Object execute(ExecutionEvent event) throws ExecutionException {
    if (!shouldRunAction())
      return null;


    ICommandService srv = CommonUtils.getService(getServiceLocator(), ICommandService.class);
    Command command = srv.getCommand(commandId);
    try {
      return command.executeWithChecks(event);
    } catch (ExecutionException e) {
      Activator.handleError(e.getMessage(), e, true);
    } catch (NotDefinedException e) {
      Activator.handleError(e.getMessage(), e, true);
    } catch (NotEnabledException e) {

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    super.createPartControl(displayArea);


    IWorkbenchWindow w = PlatformUI.getWorkbench()
        .getActiveWorkbenchWindow();
    ICommandService csrv = CommonUtils.getService(w, ICommandService.class);
    Command command = csrv
        .getCommand("org.eclipse.egit.ui.RepositoriesLinkWithSelection"); //$NON-NLS-1$
    reactOnSelection = (Boolean) command.getState(
        RegistryToggleState.STATE_ID).getValue();


    IWorkbenchSiteProgressService service = CommonUtils.getService(getSite(), IWorkbenchSiteProgressService.class);
    if (service != null) {
      service.showBusyForFamily(JobFamilies.REPO_VIEW_REFRESH);

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