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

    }
    
    @Override
    public boolean isLinked() {
        LOGGER.fine("");
        Command command = commandService.getCommand(GFM_VIEWER_PLUGIN_LINKED);
        State state = command.getState(RegistryToggleState.STATE_ID);
        return (Boolean) state.getValue();
    }

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    }


    @Override
    public boolean isOnline() {
        LOGGER.fine("");
        Command command = commandService.getCommand(GFM_VIEWER_PLUGIN_ONLINE);
        State state = command.getState(RegistryToggleState.STATE_ID);
        return (Boolean) state.getValue();
    }

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    private static Logger LOGGER = Logger.getLogger(Online.class.getPackage().getName());


    @Override
    public Object execute(final ExecutionEvent event) throws ExecutionException {
        // update toggled state
        final Command command = event.getCommand();
        final boolean state = !HandlerUtil.toggleCommandState(command);
        LOGGER.fine("state: " + state);
        return null;
    }

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    private static Logger LOGGER = Logger.getLogger(Linked.class.getPackage().getName());


    @Override
    public Object execute(final ExecutionEvent event) throws ExecutionException {
        // update toggled state
        final Command command = event.getCommand();
        final boolean state = !HandlerUtil.toggleCommandState(command);
        LOGGER.fine("state: " + state);
        return null;
    }

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  }


  public Object execute(ExecutionEvent event) throws ExecutionException {
    final ICommandService cs = (ICommandService) HandlerUtil.getActiveSite(
        event).getService(ICommandService.class);
    final Command command = cs
        .getCommand(IWorkbenchCommandConstants.FILE_IMPORT);
    final ExecutionEvent importEvent = new ExecutionEvent(command,
        Collections.singletonMap("importWizardId", SessionImportWizard.ID), //$NON-NLS-1$
        event.getTrigger(), event.getApplicationContext());
    try {
      command.executeWithChecks(importEvent);
    } catch (ExecutionException e) {
      throw e;
    } catch (CommandException e) {
      EclEmmaUIPlugin.log(e);
    }

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  }


  public Object execute(ExecutionEvent event) throws ExecutionException {
    final ICommandService cs = (ICommandService) HandlerUtil.getActiveSite(
        event).getService(ICommandService.class);
    final Command command = cs
        .getCommand(IWorkbenchCommandConstants.FILE_EXPORT);
    final ExecutionEvent importEvent = new ExecutionEvent(command,
        Collections.singletonMap("exportWizardId", SessionExportWizard.ID), //$NON-NLS-1$
        event.getTrigger(), event.getApplicationContext());
    try {
      command.executeWithChecks(importEvent);
    } catch (ExecutionException e) {
      throw e;
    } catch (CommandException e) {
      EclEmmaUIPlugin.log(e);
    }

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  public void earlyStartup() {
    // TODO Auto-generated method stub
    String commandId = "org.eclipse.ui.file.save";
    ICommandService service = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class);
    Command command = service.getCommand(commandId);
    command.addExecutionListener(new IExecutionListener() {
      
      public void preExecute(String commandId, ExecutionEvent event) {
        // TODO Auto-generated method stub
        
      }

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        IWorkbenchPage page =
          PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
        try {
          IEditorPart editor = IDE.openEditor(page, file, true);
          ICommandService cmdService = (ICommandService) editor.getSite().getService(ICommandService.class);
          Command format = cmdService.getCommand("org.eclipse.wst.sse.ui.format.document");
          if (format.isDefined()) {
            try {
              format.executeWithChecks(new ExecutionEvent());
            } 
            catch(Exception e1){
              }
            }
        } catch (PartInitException e) {

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        IWorkbenchPage page =
          PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
        try {
          IEditorPart editor = IDE.openEditor(page, file, true);
          ICommandService cmdService = (ICommandService) editor.getSite().getService(ICommandService.class);
          Command format = cmdService.getCommand("org.eclipse.wst.sse.ui.format.document");
          if (format.isDefined()) {
            try {
              format.executeWithChecks(new ExecutionEvent());
            } 
            catch(Exception e1){
              }
            }
        } catch (PartInitException e) {

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  @Override
  public Object function (Object[] arguments) {
    try {
      IHandlerService handlerService = (IHandlerService) serviceLocator.getService(IHandlerService.class);
      ICommandService commandService = (ICommandService) serviceLocator.getService(ICommandService.class);
      Command showView = commandService.getCommand(IWorkbenchCommandConstants.VIEWS_SHOW_VIEW);
      IParameter parm1 = showView.getParameter(IWorkbenchCommandConstants.VIEWS_SHOW_VIEW_PARM_ID);
      Parameterization parmId1 = new Parameterization(parm1, HttpRequestView.ID);
      IParameter parm2 = showView.getParameter(IWorkbenchCommandConstants.VIEWS_SHOW_VIEW_SECONDARY_ID);
      Parameterization parmId2 = new Parameterization(parm2, ScannerPerspectiveFactory.HTTP_VIEW_SECONDARY_ID);
      ParameterizedCommand parmCommand = new ParameterizedCommand(showView, new Parameterization[] { parmId1, parmId2 });
      handlerService.executeCommand(parmCommand, null);


      IViewPart view = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().showView(HttpRequestView.ID, ScannerPerspectiveFactory.HTTP_VIEW_SECONDARY_ID, IWorkbenchPage.VIEW_VISIBLE);

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