| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package javax.faces.application; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.faces.context.FacesContext; |
| |
| class _NavigationUtils |
| { |
| /** |
| * Evaluate all EL expressions found as parameters and return a map that can be used for |
| * redirect or render bookmark links |
| * |
| * @param parameters parameter map retrieved from NavigationCase.getParameters() |
| * @return |
| */ |
| public static Map<String, List<String>> getEvaluatedNavigationParameters( |
| FacesContext facesContext, |
| Map<String, List<String>> parameters) |
| { |
| Map<String,List<String>> evaluatedParameters = null; |
| if (parameters != null && parameters.size() > 0) |
| { |
| evaluatedParameters = new HashMap<>(5, 1f); |
| for (Map.Entry<String, List<String>> pair : parameters.entrySet()) |
| { |
| boolean containsEL = false; |
| for (int i = 0; i < pair.getValue().size(); i++) |
| { |
| String value = pair.getValue().get(i); |
| if (_isExpression(value)) |
| { |
| containsEL = true; |
| break; |
| } |
| } |
| if (containsEL) |
| { |
| evaluatedParameters.put(pair.getKey(), |
| _evaluateValueExpressions(facesContext, pair.getValue())); |
| } |
| else |
| { |
| evaluatedParameters.put(pair.getKey(), pair.getValue()); |
| } |
| } |
| } |
| else |
| { |
| evaluatedParameters = parameters; |
| } |
| return evaluatedParameters; |
| } |
| |
| /** |
| * Checks the Strings in the List for EL expressions and evaluates them. |
| * Note that the returned List will be a copy of the given List, because |
| * otherwise it will have unwanted side-effects. |
| * @param values |
| * @return |
| */ |
| private static List<String> _evaluateValueExpressions(FacesContext context, List<String> values) |
| { |
| // note that we have to create a new List here, because if we |
| // change any value on the given List, it will be changed in the |
| // NavigationCase too and the EL expression won't be evaluated again |
| List<String> target = new ArrayList<>(values.size()); |
| for (int i = 0; i < values.size(); i++) |
| { |
| String value = values.get(i); |
| // evaluate the ValueExpression |
| value = context.getApplication().evaluateExpressionGet(context, value, String.class); |
| target.add(value); |
| } |
| return target; |
| } |
| |
| private static boolean _isExpression(String text) |
| { |
| return text.contains("#{"); |
| } |
| |
| } |