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34 package info.magnolia.module.blossom.web;
35
36 import javax.jcr.Node;
37
38 import org.springframework.core.MethodParameter;
39 import org.springframework.web.bind.support.WebArgumentResolver;
40 import org.springframework.web.context.request.NativeWebRequest;
41
42 import info.magnolia.cms.core.AggregationState;
43 import info.magnolia.cms.core.Content;
44 import info.magnolia.cms.security.MgnlUser;
45 import info.magnolia.cms.security.User;
46 import info.magnolia.context.Context;
47 import info.magnolia.context.MgnlContext;
48 import info.magnolia.context.WebContext;
49 import info.magnolia.objectfactory.Components;
50 import info.magnolia.rendering.context.RenderingContext;
51
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60
61 public class BlossomWebArgumentResolver implements WebArgumentResolver {
62
63 @Override
64 public Object resolveArgument(MethodParameter methodParameter, NativeWebRequest webRequest) throws Exception {
65
66 if (methodParameter.getParameterType().isAssignableFrom(Node.class)) {
67 RenderingContext renderingContext = Components.getComponent(RenderingContext.class);
68 if (hasSubsequentParametersOfType(methodParameter, Node.class)) {
69 return renderingContext.getMainContent();
70 }
71 Node currentContent = renderingContext.getCurrentContent();
72 return currentContent != null ? currentContent : renderingContext.getMainContent();
73 }
74 if (methodParameter.getParameterType().isAssignableFrom(Content.class)) {
75 AggregationState aggregationState = MgnlContext.getAggregationState();
76 if (hasSubsequentParametersOfType(methodParameter, Content.class)) {
77 return aggregationState.getMainContent();
78 }
79 Content currentContent = aggregationState.getCurrentContent();
80 return currentContent != null ? currentContent : aggregationState.getMainContent();
81 }
82 if (methodParameter.getParameterType().isAssignableFrom(AggregationState.class)) {
83 return MgnlContext.getAggregationState();
84 }
85 if (methodParameter.getParameterType().isAssignableFrom(WebContext.class)) {
86 return MgnlContext.getWebContext();
87 }
88 if (methodParameter.getParameterType().isAssignableFrom(Context.class)) {
89 return MgnlContext.getInstance();
90 }
91 if (methodParameter.getParameterType().isAssignableFrom(User.class)) {
92 return MgnlContext.getUser();
93 }
94 if (methodParameter.getParameterType().isAssignableFrom(MgnlUser.class)) {
95 return MgnlContext.getUser();
96 }
97
98 return UNRESOLVED;
99 }
100
101 private boolean hasSubsequentParametersOfType(MethodParameter methodParameter, Class<?> clazz) {
102 Class<?>[] parameterTypes = methodParameter.getMethod().getParameterTypes();
103 for (int i = methodParameter.getParameterIndex() + 1; i < parameterTypes.length; i++) {
104 Class<?> parameterType = parameterTypes[i];
105 if (parameterType.equals(clazz)) {
106 return true;
107 }
108 }
109 return false;
110 }
111 }