Examples of com.sun.faces.context.StateContext$StatelessAddRemoveListener

com.sun.faces.context.StateContext
An AddRemoveListener that implements the new dynamic component strategy where no state is managed by the listener itself. Instead, we use expando attributes on the dynamic components (and their parents) to track/preserve the dynamic nature of these components.


    @Override
    public StateManagementStrategy getStateManagementStrategy(FacesContext context, String viewId) {
        StateManagementStrategy result;
        
        StateContext stateCtx = StateContext.getStateContext(context);
        if (stateCtx.isPartialStateSaving(context, viewId)) {
            result = new FaceletPartialStateManagementStrategy(context);
        } else {
            result = new FaceletFullStateManagementStrategy(context);
        }

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                throw new FacesException(ioe);
            }
        }


        UIViewRoot root = super.restoreView(context, viewId);        
        StateContext stateCtx = StateContext.getStateContext(context);
        stateCtx.startTrackViewModifications(context, root);
        
        return root;
    }

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     * @throws IOException if an error occurs building the view.
     */
    @Override
    public void buildView(FacesContext ctx, UIViewRoot view)
    throws IOException {
        StateContext stateCtx = StateContext.getStateContext(ctx);
        if (Util.isViewPopulated(ctx, view)) {
            Facelet f = faceletFactory.getFacelet(view.getViewId());
            // Disable events from being intercepted by the StateContext by
            // virute of re-applying the handlers. 
            try {
                stateCtx.setTrackViewModifications(false);
                f.apply(ctx, view);
                reapplyDynamicActions(ctx);
                if (stateCtx.isPartialStateSaving(ctx, view.getViewId())) {
                    markInitialStateIfNotMarked(view);
                }
            } finally {
                stateCtx.setTrackViewModifications(true);
            }
            return;
        }


        view.setViewId(view.getViewId());


        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("Building View: " + view.getViewId());
        }
        if (faceletFactory == null) {
            ApplicationAssociate associate = ApplicationAssociate.getInstance(ctx.getExternalContext());
            faceletFactory = associate.getFaceletFactory();
            assert (faceletFactory != null);
        }
        RequestStateManager.set(ctx,
                                RequestStateManager.FACELET_FACTORY,
                                faceletFactory);
        Facelet f = faceletFactory.getFacelet(view.getViewId());


        // populate UIViewRoot
        try {
            ctx.getAttributes().put(IS_BUILDING_INITIAL_STATE, Boolean.TRUE);
            stateCtx.setTrackViewModifications(false);
            f.apply(ctx, view);
            
            if (f instanceof XMLFrontMatterSaver) {
                XMLFrontMatterSaver frontMatterSaver = (XMLFrontMatterSaver) f;
                String DOCTYPE = frontMatterSaver.getSavedDoctype();
                if (null != DOCTYPE) {
                    Util.saveDOCTYPEToFacesContextAttributes(DOCTYPE);
                }
                String XMLDECL = frontMatterSaver.getSavedXMLDecl();
                if (null != XMLDECL) {
                    Util.saveXMLDECLToFacesContextAttributes(XMLDECL);
                }
            }
            
            if (!stateCtx.isPartialStateSaving(ctx, view.getViewId())) {
                reapplyDynamicActions(ctx);
            }
            
            doPostBuildActions(ctx, view);
        } finally {

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    }


     
    private void doPostBuildActions(FacesContext ctx, UIViewRoot root) {
        StateContext stateCtx = StateContext.getStateContext(ctx);
//        if (stateCtx.isPartialStateSaving(ctx, root.getViewId())) {
      // lu4242            root.markInitialState();
  //      }
        stateCtx.startTrackViewModifications(ctx, root);
    }

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        stateCtx.startTrackViewModifications(ctx, root);
    }


     private void markInitialState(FacesContext ctx, UIViewRoot root)
     {
         StateContext stateCtx = StateContext.getStateContext(ctx);
         if (stateCtx.isPartialStateSaving(ctx, root.getViewId())) {
             try {
                 ctx.getAttributes().put(IS_BUILDING_INITIAL_STATE, Boolean.TRUE);
                 if (!root.isTransient()) {
                     markInitialState(root);
                 }

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     * modifications off and on as required. </p>
     *
     * @param context the Faces context.
     */
    private void reapplyDynamicActions(FacesContext context) {
        StateContext stateContext = StateContext.getStateContext(context);
        List<ComponentStruct> actions = stateContext.getDynamicActions();
        if (actions != null) {
            for (ComponentStruct action : actions) {
                if (ComponentStruct.REMOVE.equals(action.action)) {
                    reapplyDynamicRemove(context, action);
                }

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        UIComponent parent = locateComponentByClientId(context, struct.parentClientId);


        if (parent != null) {
            
            UIComponent child = locateComponentByClientId(context, struct.clientId);
            StateContext stateContext = StateContext.getStateContext(context);


            if (child == null) {
                child = stateContext.getDynamicComponents().get(struct.clientId);
            }


            if (child != null) {
                if (struct.facetName != null) {
                    parent.getFacets().remove(struct.facetName);
                    parent.getFacets().put(struct.facetName, child);
                    child.getClientId();
                } else {
                    int childIndex = -1;
                    if (child.getAttributes().containsKey(DYNAMIC_COMPONENT)) {
                        childIndex = (Integer) child.getAttributes().get(DYNAMIC_COMPONENT);
                    }
                    child.setId(struct.id);
                    if (childIndex >= parent.getChildCount() || childIndex == -1) {
                        parent.getChildren().add(child);
                    } else {
                        parent.getChildren().add(childIndex, child);
                    }
                    child.getClientId();
                    child.getAttributes().put(DYNAMIC_COMPONENT, child.getParent().getChildren().indexOf(child));
                }
                stateContext.getDynamicComponents().put(struct.clientId, child);
            }
        }
    }

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     * @param struct the component struct.
     */
    private void reapplyDynamicRemove(FacesContext context, ComponentStruct struct) {
        UIComponent child = locateComponentByClientId(context, struct.clientId);
        if (child != null) {
            StateContext stateContext = StateContext.getStateContext(context);
            stateContext.getDynamicComponents().put(struct.clientId, child);
            UIComponent parent = child.getParent();
            parent.getChildren().remove(child);
        }
    }

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        // no need to suppress events at that time
        UIViewRoot root = ctx.getViewRoot();
        if (root != null) {
            String viewId = root.getViewId();
            if (viewId != null) {
                StateContext stateCtx = StateContext.getStateContext(ctx);
                return stateCtx.isPartialStateSaving(ctx, viewId);
            }
        }
        return false;


    }

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    @Override
    public StateManagementStrategy getStateManagementStrategy(FacesContext context, String viewId) {
        StateManagementStrategy result;
        
        StateContext stateCtx = StateContext.getStateContext(context);
        if (stateCtx.isPartialStateSaving(context, viewId)) {
            result = new FaceletPartialStateManagementStrategy(context);
        } else {
            result = new FaceletFullStateManagementStrategy(context);
        }

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