Examples of org.apache.wicket.util.iterator.ComponentHierarchyIterator

org.apache.wicket.util.iterator.ComponentHierarchyIterator
Iterator over the complete Component hierarchy. The implementation is parent first, meaning that first the parent gets returned upon next() and only than it's children.
A fluent or builder type of API is provided to configure the iterator with filters. @author Juergen Donnerstag @deprecated Hierarchy iterators are deprecated because they have problems with pages withdeep component tree. Use {@link org.apache.wicket.util.visit.IVisitor} instead. @see org.apache.wicket.MarkupContainer#visitChildren(org.apache.wicket.util.visit.IVisitor) @see org.apache.wicket.MarkupContainer#visitChildren(Class,org.apache.wicket.util.visit.IVisitor)


    /**
     * @return all form components that are assigned to this {@link FormGroup}
     */
    private List<FormComponent<?>> findFormComponents() {
        final ComponentHierarchyIterator it = getBodyContainer().visitChildren(FormComponent.class);


        final List<FormComponent<?>> components = new ArrayList<FormComponent<?>>();
        while (it.hasNext()) {
            components.add((FormComponent<?>) it.next());
        }


        return components;
    }

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  /**
   * @return A iterator which iterators over all children and grand-children the Component
   */
  public final ComponentHierarchyIterator visitChildren()
  {
    return new ComponentHierarchyIterator(this);
  }

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   * @return A iterator which iterators over all children and grand-children the Component,
   *         returning only components which implement (instanceof) the provided clazz.
   */
  public final ComponentHierarchyIterator visitChildren(final Class<?> clazz)
  {
    return new ComponentHierarchyIterator(this).filterByClass(clazz);
  }

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  /**
   * @return A iterator which iterators over all children and grand-children the Component
   */
  public final ComponentHierarchyIterator visitChildren()
  {
    return new ComponentHierarchyIterator(this);
  }

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   * @return A iterator which iterators over all children and grand-children the Component,
   *         returning only components which implement (instanceof) the provided clazz.
   */
  public final ComponentHierarchyIterator visitChildren(final Class<?> clazz)
  {
    return new ComponentHierarchyIterator(this).filterByClass(clazz);
  }

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  /**
   * @return A iterator which iterators over all children and grand-children the Component
   */
  public final ComponentHierarchyIterator visitChildren()
  {
    return new ComponentHierarchyIterator(this);
  }

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   * @return A iterator which iterators over all children and grand-children the Component,
   *         returning only components which implement (instanceof) the provided clazz.
   */
  public final ComponentHierarchyIterator visitChildren(final Class<?> clazz)
  {
    return new ComponentHierarchyIterator(this).filterByClass(clazz);
  }

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  /**
   * @return A iterator which iterators over all children and grand-children the Component
   */
  public final ComponentHierarchyIterator visitChildren()
  {
    return new ComponentHierarchyIterator(this);
  }

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   * @return A iterator which iterators over all children and grand-children the Component,
   *         returning only components which implement (instanceof) the provided clazz.
   */
  public final ComponentHierarchyIterator visitChildren(final Class<?> clazz)
  {
    return new ComponentHierarchyIterator(this).filterByClass(clazz);
  }

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  /**
   * @return A iterator which iterators over all children and grand-children the Component
   */
  public final ComponentHierarchyIterator visitChildren()
  {
    return new ComponentHierarchyIterator(this);
  }

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