Examples of java.beans.FeatureDescriptor

java.beans.FeatureDescriptor
The FeatureDescriptor class is the common baseclass for PropertyDescriptor, EventSetDescriptor, and MethodDescriptor, etc.
It supports some common information that can be set and retrieved for any of the introspection descriptors.
In addition it provides an extension mechanism so that arbitrary attribute/value pairs can be associated with a design feature.

  {
    if (iter == null)
      return;


    while (iter.hasNext()) {
      FeatureDescriptor desc = iter.next();


      descriptors.add(desc);
    }
  }

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    VIEW
  };


  private static void addDescriptor(String name, Class type)
  {
    FeatureDescriptor desc = new FeatureDescriptor();
    desc.setName(name);
    desc.setDisplayName(name);
    desc.setExpert(false);
    desc.setHidden(false);
    desc.setPreferred(true);
    desc.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
    desc.setValue(ELResolver.TYPE, type);
    
    _implicitFeatureDescriptors.add(desc);
  }

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  {
    if (iter == null)
      return;


    while (iter.hasNext()) {
      FeatureDescriptor desc = iter.next();


      descriptors.add(desc);
    }
  }

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    }
  }


  private static void addDescriptor(String name, Class type)
  {
    FeatureDescriptor desc = new FeatureDescriptor();
    desc.setName(name);
    desc.setDisplayName(name);
    desc.setExpert(false);
    desc.setHidden(false);
    desc.setPreferred(true);
    desc.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
    desc.setValue(ELResolver.TYPE, type);
    
    _implicitFeatureDescriptors.add(desc);
  }

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    ArrayList<FeatureDescriptor> descriptors
      = new ArrayList<FeatureDescriptor>();


    for (ResourceBundleConfig bundle : _bundleMap.values()) {
      FeatureDescriptor desc = new FeatureDescriptor();
      desc.setName(bundle.getVar());
      
      if (bundle.getDisplayName() != null)
        desc.setDisplayName(bundle.getDisplayName());
      else
        desc.setDisplayName(bundle.getVar());
      
      desc.setExpert(false);
      desc.setHidden(false);
      desc.setPreferred(true);
      desc.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
      desc.setValue(ELResolver.TYPE, ResourceBundle.class);


      descriptors.add(desc);
    }


    return descriptors.iterator();

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    public Iterator getFeatureDescriptors(ELContext context, Object base) {
        if (base instanceof ResourceBundle) {
            List<FeatureDescriptor> feats = new ArrayList<FeatureDescriptor>();
            Enumeration e = ((ResourceBundle) base).getKeys();
            FeatureDescriptor feat;
            String key;
            while (e.hasMoreElements()) {
                key = (String) e.nextElement();
                feat = new FeatureDescriptor();
                feat.setDisplayName(key);
                feat.setExpert(false);
                feat.setHidden(false);
                feat.setName(key);
                feat.setPreferred(true);
                feat.setValue(RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
                feat.setValue(TYPE, String.class);
                feats.add(feat);
            }
            return feats.iterator();
        }
        return null;

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  public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base) {
    if (base instanceof List) {
      FeatureDescriptor[] descs = new FeatureDescriptor[((List) base).size()];
      for (int i = 0; i < descs.length; i++) {
        descs[i] = new FeatureDescriptor();
        descs[i].setDisplayName("["+i+"]");
        descs[i].setExpert(false);
        descs[i].setHidden(false);
        descs[i].setName(""+i);
        descs[i].setPreferred(true);

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  public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base) {
    if (base instanceof Map) {
      Iterator itr = ((Map) base).keySet().iterator();
      List<FeatureDescriptor> feats = new ArrayList<FeatureDescriptor>();
      Object key;
      FeatureDescriptor desc;
      while (itr.hasNext()) {
        key = itr.next();
        desc = new FeatureDescriptor();
        desc.setDisplayName(key.toString());
        desc.setExpert(false);
        desc.setHidden(false);
        desc.setName(key.toString());
        desc.setPreferred(true);
        desc.setValue(RESOLVABLE_AT_DESIGN_TIME, Boolean.FALSE);
        desc.setValue(TYPE, key.getClass());
        feats.add(desc);
      }
      return feats.iterator();
    }
    return null;

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    e = ctxt.getAttributeNamesInScope(PageContext.PAGE_SCOPE);
    while (e.hasMoreElements()) {
      name = (String) e.nextElement();
      value = ctxt.getAttribute(name, PageContext.PAGE_SCOPE);
      FeatureDescriptor descriptor = new FeatureDescriptor();
      descriptor.setName(name);
      descriptor.setDisplayName(name);
      descriptor.setExpert(false);
      descriptor.setHidden(false);
      descriptor.setPreferred(true);
      descriptor.setShortDescription("page scoped attribute");
      descriptor.setValue("type", value.getClass());
      descriptor.setValue("resolvableAtDesignTime", Boolean.FALSE);
      list.add(descriptor);
    }


    e = ctxt.getAttributeNamesInScope(PageContext.REQUEST_SCOPE);
    while (e.hasMoreElements()) {
      name = (String) e.nextElement();
      value = ctxt.getAttribute(name, PageContext.REQUEST_SCOPE);
      FeatureDescriptor descriptor = new FeatureDescriptor();
      descriptor.setName(name);
      descriptor.setDisplayName(name);
      descriptor.setExpert(false);
      descriptor.setHidden(false);
      descriptor.setPreferred(true);
      descriptor.setShortDescription("request scope attribute");
      descriptor.setValue("type", value.getClass());
      descriptor.setValue("resolvableAtDesignTime", Boolean.FALSE);
      list.add(descriptor);
    }


    if (ctxt.getSession() != null) {
      e = ctxt.getAttributeNamesInScope(PageContext.SESSION_SCOPE);
      while (e.hasMoreElements()) {
        name = (String) e.nextElement();
        value = ctxt.getAttribute(name, PageContext.SESSION_SCOPE);
        FeatureDescriptor descriptor = new FeatureDescriptor();
        descriptor.setName(name);
        descriptor.setDisplayName(name);
        descriptor.setExpert(false);
        descriptor.setHidden(false);
        descriptor.setPreferred(true);
        descriptor.setShortDescription("session scoped attribute");
        descriptor.setValue("type", value.getClass());
        descriptor.setValue("resolvableAtDesignTime", Boolean.FALSE);
        list.add(descriptor);
      }
    }


    e = ctxt.getAttributeNamesInScope(PageContext.APPLICATION_SCOPE);
    while (e.hasMoreElements()) {
      name = (String) e.nextElement();
      value = ctxt.getAttribute(name, PageContext.APPLICATION_SCOPE);
      FeatureDescriptor descriptor = new FeatureDescriptor();
      descriptor.setName(name);
      descriptor.setDisplayName(name);
      descriptor.setExpert(false);
      descriptor.setHidden(false);
      descriptor.setPreferred(true);
      descriptor.setShortDescription("application scoped attribute");
      descriptor.setValue("type", value.getClass());
      descriptor.setValue("resolvableAtDesignTime", Boolean.FALSE);
      list.add(descriptor);
    }
    return list.iterator();
  }

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    public static FeatureDescriptor getFeatureDescriptor(String name, String
        displayName, String desc, boolean expert, boolean hidden, 
        boolean preferred, Object type, Boolean designTime) {
            
        FeatureDescriptor fd = new FeatureDescriptor();
        fd.setName(name);
        fd.setDisplayName(displayName);
        fd.setShortDescription(desc);
        fd.setExpert(expert);
        fd.setHidden(hidden);
        fd.setPreferred(preferred);
        fd.setValue(ELResolver.TYPE, type);
        fd.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, designTime);
        return fd;
    }

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