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

com.sun.faces.context.StateContext
A system event listener which is used to listen for changes on the component tree after restore view and before rendering out the view.


    @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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