Examples of org.eclipse.jface.bindings.Scheme

org.eclipse.jface.bindings.Scheme

An instance of IScheme is a handle representing a binding scheme as defined by the extension point org.eclipse.ui.bindings. The identifier of the handle is the identifier of the scheme being represented.

An instance of IScheme can be obtained from an instance of ICommandManager for any identifier, whether or not a scheme with that identifier is defined in the plugin registry.

The handle-based nature of this API allows it to work well with runtime plugin activation and deactivation. If a scheme is defined, that means that its corresponding plug-in is active. If the plug-in is then deactivated, the scheme will still exist but it will be undefined. An attempt to use an undefined scheme will result in a NotDefinedException being thrown.

This class is not intended to be extended by clients.
@since 3.1 @see ISchemeListener @see org.eclipse.core.commands.CommandManager

      final int naturalKey = acceleratorInt & ~modifierMask;
      final KeyStroke keyStroke = KeyStroke.getInstance(modifierKeys,
          naturalKey);
      final KeySequence keySequence = KeySequence.getInstance(keyStroke);


      final Scheme activeScheme = bindingService.getActiveScheme();


      try {
        final Binding binding = new KeyBinding(keySequence, command,
            activeScheme.getId(), IContextIds.CONTEXT_ID_WINDOW,
            null, null, null, Binding.SYSTEM);
        commandIdToBinding.put(command.getCommand().getId(), binding);


        if (command.getCommand().isEnabled()) {
          bindingService.addBinding(binding);

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          parentId = null;
        }
      }


      // Define the scheme.
      final Scheme scheme = bindingManager.getScheme(id);
      scheme.define(name, description, parentId);
    }


    logWarnings(
        warningsToLog,
        "Warnings while parsing the key bindings from the 'org.eclipse.ui.bindings', 'org.eclipse.ui.acceleratorConfigurations' and 'org.eclipse.ui.commands' extension point"); //$NON-NLS-1$

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    localChangeManager = new BindingManager(new ContextManager(),
        new CommandManager());
    final Scheme[] definedSchemes = bindingService.getDefinedSchemes();
    try {
      for (int i = 0; i < definedSchemes.length; i++) {
        final Scheme scheme = definedSchemes[i];
        final Scheme copy = localChangeManager
            .getScheme(scheme.getId());
        copy.define(scheme.getName(), scheme.getDescription(), scheme
            .getParentId());
      }
      localChangeManager
          .setActiveScheme(bindingService.getActiveScheme());
    } catch (final NotDefinedException e) {

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        message);


    if (confirmed) {
      // Fix the scheme in the local changes.
      final String defaultSchemeId = bindingService.getDefaultSchemeId();
      final Scheme defaultScheme = localChangeManager
          .getScheme(defaultSchemeId);
      try {
        localChangeManager.setActiveScheme(defaultScheme);
      } catch (final NotDefinedException e) {
        // At least we tried....

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    final ISelection selection = event.getSelection();
    if (selection instanceof IStructuredSelection) {
      final Object firstElement = ((IStructuredSelection) selection)
          .getFirstElement();
      if (firstElement instanceof Scheme) {
        final Scheme newScheme = (Scheme) firstElement;
        if (newScheme != localChangeManager.getActiveScheme()) {
          try {
            localChangeManager.setActiveScheme(newScheme);
            busyRefillTree();
          } catch (final NotDefinedException e) {

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        message);


    if (confirmed) {
      // Fix the scheme in the local changes.
      final String defaultSchemeId = bindingService.getDefaultSchemeId();
      final Scheme defaultScheme = localChangeManager
          .getScheme(defaultSchemeId);
      try {
        localChangeManager.setActiveScheme(defaultScheme);
      } catch (final NotDefinedException e) {
        // At least we tried....

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  /**
   * Updates the local managers active scheme, and then updates the interface.
   */
  private final void selectedComboScheme() {
    final String activeSchemeId = getSchemeId();
    final Scheme activeScheme = localChangeManager
        .getScheme(activeSchemeId);
    try {
      localChangeManager.setActiveScheme(activeScheme);
    } catch (final NotDefinedException e) {
      // Oh, well.

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      Map schemesByName = new HashMap();


      final Scheme[] definedSchemes = bindingService.getDefinedSchemes();
      for (int i = 0; i < definedSchemes.length; i++) {
        final Scheme scheme = definedSchemes[i];
        try {
          String name = scheme.getName();
          Collection schemes = (Collection) schemesByName.get(name);


          if (schemes == null) {
            schemes = new HashSet();
            schemesByName.put(name, schemes);
          }


          schemes.add(scheme);
        } catch (final NotDefinedException e) {
          // Do nothing.
        }
      }


      contextIdsByUniqueName = new HashMap();
      contextUniqueNamesById = new HashMap();


      for (Iterator iterator = contextsByName.entrySet().iterator(); iterator
          .hasNext();) {
        Map.Entry entry = (Map.Entry) iterator.next();
        String name = (String) entry.getKey();
        Set contexts = (Set) entry.getValue();
        Iterator iterator2 = contexts.iterator();


        if (contexts.size() == 1) {
          Context context = (Context) iterator2.next();
          contextIdsByUniqueName.put(name, context.getId());
          contextUniqueNamesById.put(context.getId(), name);
        } else {
          while (iterator2.hasNext()) {
            Context context = (Context) iterator2.next();
            String uniqueName = MessageFormat.format(
                Util.translateString(RESOURCE_BUNDLE,
                    "uniqueName"), new Object[] { name, //$NON-NLS-1$
                    context.getId() });
            contextIdsByUniqueName.put(uniqueName, context.getId());
            contextUniqueNamesById.put(context.getId(), uniqueName);
          }
        }
      }


      categoryIdsByUniqueName = new HashMap();
      categoryUniqueNamesById = new HashMap();


      for (Iterator iterator = categoriesByName.entrySet().iterator(); iterator
          .hasNext();) {
        Map.Entry entry = (Map.Entry) iterator.next();
        String name = (String) entry.getKey();
        Set categories = (Set) entry.getValue();
        Iterator iterator2 = categories.iterator();


        if (categories.size() == 1) {
          Category category = (Category) iterator2.next();
          categoryIdsByUniqueName.put(name, category.getId());
          categoryUniqueNamesById.put(category.getId(), name);
        } else {
          while (iterator2.hasNext()) {
            Category category = (Category) iterator2.next();
            String uniqueName = MessageFormat.format(
                Util.translateString(RESOURCE_BUNDLE,
                    "uniqueName"), new Object[] { name, //$NON-NLS-1$
                    category.getId() });
            categoryIdsByUniqueName.put(uniqueName, category
                .getId());
            categoryUniqueNamesById.put(category.getId(),
                uniqueName);
          }
        }
      }


      schemeIdsByUniqueName = new HashMap();
      schemeUniqueNamesById = new HashMap();


      for (Iterator iterator = schemesByName.entrySet().iterator(); iterator
          .hasNext();) {
        Map.Entry entry = (Map.Entry) iterator.next();
        String name = (String) entry.getKey();
        Set keyConfigurations = (Set) entry.getValue();
        Iterator iterator2 = keyConfigurations.iterator();


        if (keyConfigurations.size() == 1) {
          Scheme scheme = (Scheme) iterator2.next();
          schemeIdsByUniqueName.put(name, scheme.getId());
          schemeUniqueNamesById.put(scheme.getId(), name);
        } else {
          while (iterator2.hasNext()) {
            Scheme scheme = (Scheme) iterator2.next();
            String uniqueName = MessageFormat.format(
                Util.translateString(RESOURCE_BUNDLE,
                    "uniqueName"), new Object[] { name, //$NON-NLS-1$
                    scheme.getId() });
            schemeIdsByUniqueName.put(uniqueName, scheme.getId());
            schemeUniqueNamesById.put(scheme.getId(), uniqueName);
          }
        }
      }


      Scheme activeScheme = bindingService.getActiveScheme();


      // Make an internal copy of the binding manager, for local changes.
      try {
        for (int i = 0; i < definedSchemes.length; i++) {
          final Scheme scheme = definedSchemes[i];
          final Scheme copy = localChangeManager.getScheme(scheme
              .getId());
          copy.define(scheme.getName(), scheme.getDescription(),
              scheme.getParentId());
        }
        localChangeManager.setActiveScheme(bindingService
            .getActiveScheme());
      } catch (final NotDefinedException e) {

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   */
  private final void updateLabelSchemeExtends() {
    final String schemeId = getSchemeId();


    if (schemeId != null) {
      final Scheme scheme = bindingService.getScheme(schemeId);
      try {
        final String name = (String) schemeUniqueNamesById.get(scheme
            .getParentId());
        if (name != null) {
          labelSchemeExtends.setText(MessageFormat.format(Util
              .translateString(RESOURCE_BUNDLE, "extends"), //$NON-NLS-1$
              new Object[] { name }));

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  public final void bindingManagerChanged(final BindingManagerEvent event) {
    final boolean schemeDefinitionsChanged = event.getScheme() != null;
    final Set previousSchemes;
    if (schemeDefinitionsChanged) {
      previousSchemes = new HashSet();
      final Scheme scheme = event.getScheme();
      final Scheme[] definedSchemes = event.getManager()
          .getDefinedSchemes();
      final int definedSchemesCount = definedSchemes.length;
      for (int i = 0; i < definedSchemesCount; i++) {
        final Scheme definedScheme = definedSchemes[0];
        if ((definedScheme == scheme) && (event.isSchemeDefined())) {
          continue; // skip this one, it was just defined.
        }
        previousSchemes.add(definedSchemes[0].getId());
      }

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org.eclipse.wst.sse.ui.preferences.CodeAssistCyclingConfigurationBlock

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