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16 package com.blandware.atleap.webapp.action.core.layout;
17
18 import com.blandware.atleap.common.Constants;
19 import com.blandware.atleap.persistence.exception.DeleteException;
20 import com.blandware.atleap.service.core.LayoutManager;
21 import com.blandware.atleap.service.core.PageManager;
22 import com.blandware.atleap.service.exception.BeanNotFoundException;
23 import com.blandware.atleap.webapp.action.core.BaseAction;
24 import com.blandware.atleap.webapp.form.LayoutForm;
25 import com.blandware.atleap.webapp.util.core.CacheUtil;
26 import com.blandware.atleap.webapp.util.core.DefinitionUtil;
27 import com.blandware.atleap.model.core.Layout;
28 import com.blandware.atleap.model.core.ActionPage;
29 import org.apache.commons.validator.GenericValidator;
30 import org.apache.struts.action.ActionForm;
31 import org.apache.struts.action.ActionForward;
32 import org.apache.struts.action.ActionMapping;
33 import org.apache.struts.action.ActionMessage;
34 import org.apache.struts.action.ActionMessages;
35 import org.apache.struts.config.ModuleConfig;
36 import org.apache.struts.config.ActionConfig;
37 import org.apache.struts.config.ForwardConfig;
38 import org.apache.struts.util.ModuleUtils;
39 import org.apache.struts.tiles.DefinitionsFactoryException;
40
41 import javax.servlet.http.HttpServletRequest  ;
42 import javax.servlet.http.HttpServletResponse ;
43 import javax.servlet.ServletContext ;
44 import java.util.List ;
45 import java.util.Set ;
46 import java.util.TreeSet ;
47
48
69 public final class DeleteLayoutAction extends BaseAction {
70
79 public ActionForward execute(ActionMapping mapping, ActionForm form,
80 HttpServletRequest request, HttpServletResponse response) throws Exception {
81
82 LayoutForm layoutForm = (LayoutForm) form;
83 Long layoutId = null;
84 if ( !GenericValidator.isBlankOrNull(layoutForm.getId()) ) {
85 layoutId = Long.valueOf(layoutForm.getId());
86 } else {
87 if ( log.isWarnEnabled() ) {
88 log.warn("Missing layout ID. Returning to list...");
89 }
90 return mapping.findForward("listLayouts");
91 }
92
93 LayoutManager layoutManager = (LayoutManager) getBean(Constants.LAYOUT_MANAGER_BEAN);
94 Layout layout = layoutManager.retrieveLayout(layoutId);
95
96 PageManager pageManager = (PageManager) getBean(Constants.PAGE_MANAGER_BEAN);
97
98 ServletContext servletContext = request.getSession().getServletContext();
99 DefinitionUtil definitionUtil = DefinitionUtil.getInstance(servletContext);
100 List descendants = null;
101 String layoutDefinition = layout.getDefinition();
102 try {
103 descendants = definitionUtil.getDescendantDefinitionsNames(layoutDefinition, request, servletContext);
104 } catch (DefinitionsFactoryException e) {
105 if ( log.isErrorEnabled() ) {
106 log.error("Cannot get definitions list", e);
107 }
108 }
109 descendants.add(layoutDefinition);
110 Set allDescendants = new TreeSet (descendants);
111
112 for (int i = 0; i < descendants.size(); i++) {
114 String definition = (String ) descendants.get(i);
115 if (!definition.equals(layoutDefinition)) {
116 Layout l = layoutManager.findLayoutByDefinition(definition);
117 if (l != null) {
118 ActionMessages errors = new ActionMessages();
119 errors.add("layoutCannotDelete", new ActionMessage("core.layout.errors.cannotDeleteBecauseOfLayout"));
120 saveErrors(request, errors);
121 return mapping.findForward("listLayouts");
122 }
123 }
124 }
125
126 ModuleConfig moduleConfig = ModuleUtils.getInstance().getModuleConfig(request, servletContext);
128 String prefix = moduleConfig.getPrefix();
129 ActionConfig actionConfigs[] = moduleConfig.findActionConfigs();
130 for (int j = 0; j < actionConfigs.length; j++) {
131 ActionConfig actionConfig = actionConfigs[j];
132 boolean referencesDescendant = false;
133 ForwardConfig forwardConfigs[] = actionConfig.findForwardConfigs();
134 for (int k = 0; k < forwardConfigs.length; k++) {
135 ForwardConfig forwardConfig = forwardConfigs[k];
136 String path = forwardConfig.getPath();
137 if (allDescendants.contains(path)) {
138 referencesDescendant = true;
139 break;
140 }
141 }
142 if (referencesDescendant) {
143 String uri = actionConfig.getPath().substring(prefix.length());
144 ActionPage actionPage = pageManager.findActionPageByUri(uri);
145 if (actionPage != null) {
146 ActionMessages errors = new ActionMessages();
147 errors.add("layoutCannotDelete", new ActionMessage("core.layout.errors.cannotDeleteBecauseOfAP"));
148 saveErrors(request, errors);
149 return mapping.findForward("listLayouts");
150 }
151 }
152 }
153
154 try {
155 layoutManager.deleteLayout(layoutId);
156 } catch ( BeanNotFoundException e ) {
157 ActionMessages errors = new ActionMessages();
158 errors.add("layoutNotFound", new ActionMessage("core.layout.errors.notFound"));
159 saveErrors(request, errors);
160 return mapping.findForward("listLayouts");
161 } catch ( DeleteException e ) {
162 ActionMessages errors = new ActionMessages();
163 errors.add("layoutCannotDelete", new ActionMessage("core.layout.errors.cannotDeleteBecauseOfCP"));
164 saveErrors(request, errors);
165 return mapping.findForward("listLayouts");
166 }
167
168 CacheUtil.getInstance(request).flushMenuCache();
170
171 return mapping.findForward("listLayouts");
172 }
173 } |
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