Examples of org.araneaframework.Component

org.araneaframework.Component
An entity with a licecycle (init, destroy) and an Environment.

A components lifecycle is simple. It starts with init and ends with destroy.
- A component once inited, cannot be reinited.
- A component once destroyed, cannot be reinited.
- A component not inited, cannot be destroyed.
If a lifecycle contract is broken {@link org.araneaframework.core.AraneaRuntimeException}will be thrown.

The component is initialized with an {@link org.araneaframework.Environment}. The component's Environment cannot be altered after the initialization process.

The Component follows the template pattern by defining _getComponent() which returns the implementation. @author "Toomas Römer" @author Jevgeni Kabanov (ekabanov@webmedia.ee)


    /**
     * @see org.araneaframework.Composite.Interface#detach(java.lang.Object)
     */
    public Component detach(Object key) {
      Component comp = (Component) _getChildren().remove(key);
      
      if (comp == null) {
        throw new NoSuchWidgetException(key);
      }
      return comp;

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      StandardMenuWidget.this.selectMenuItem(eventParam);
    }
  }


  public void selectMenuItem(String menuItemPath) throws Exception {
    Component newFlow = menu.selectMenuItem(menuItemPath);
    if (newFlow == null)
      replace((Component) topWidgetClass.newInstance(), null);
    else {
      replace((Component) topWidgetClass.newInstance(), null);
      start(newFlow, null, null);

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   * Removes the childcomponent with the specified key from the children and calls destroy on it.
   */
  protected void _removeComponent(Object key) throws Exception {
    _checkCall();
    
    Component comp = (Component)children.get(key);
    
    if (comp == null) {
      return;
    }


    //Sequence is very important, and guarantees that there won't 
    //be a second destroy call if the first one doesn't succeed.
    children.remove(key);
    comp._getComponent().destroy();
  }

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   */
  public Component selectMenuItem(String menuPath) throws Exception {
    clearSelection();


    MenuItem menu = this;
    Component resultFlow = null;
    
    try {
      for (StringTokenizer st = new StringTokenizer(menuPath, MENU_PATH_SEPARATOR); st.hasMoreTokens(); ) {
        menu = (MenuItem)menu.subMenu.get(st.nextToken());
        menu.setSelected(true);

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  protected void _propagate(Message message) throws Exception {
    Iterator ite = (new HashMap(_getChildren())).keySet().iterator();
    while(ite.hasNext()) {
      Object key = ite.next();
      Component component = (Component)_getChildren().get(key);
      
      if (component == null ) {
        throw new NoSuchComponentException(key);
      }

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          for (Iterator i = new HashMap(_getChildren()).keySet().iterator(); i.hasNext(); ) {
            _removeComponent(i.next());
          }
          
          for (Iterator i = new HashMap(disabledChildren).keySet().iterator(); i.hasNext(); ) {
            Component comp = (Component) disabledChildren.get(i.next());
            if (comp != null) {          
              comp._getComponent().destroy();             
            }
          }    
          
          for (Iterator i = new ArrayList(destroyers).iterator(); i.hasNext(); ) {
            Standard.Destroyer dest = (Standard.Destroyer) i.next();

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Related Classes of org.araneaframework.Component

org.araneaframework.core.BaseComponent

org.araneaframework.core.BaseComponent$ComponentImpl

org.araneaframework.core.StandardWidget$CompositeImpl

org.araneaframework.uilib.core.MenuItem

org.araneaframework.uilib.core.StandardMenuWidget

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