001: /*
002: * $Header: /export/home/cvsroot/MyPersonalizerRepository/MyPersonalizer/Subsystems/Portal/Sources/es/udc/mypersonalizer/portal/controller/actions/content/ChangeDefaultWorkspaceAction.java,v 1.1.1.1 2004/03/25 12:08:40 fbellas Exp $
003: * $Revision: 1.1.1.1 $
004: * $Date: 2004/03/25 12:08:40 $
005: *
006: * =============================================================================
007: *
008: * Copyright (c) 2003, The MyPersonalizer Development Group
009: * (http://www.tic.udc.es/~fbellas/mypersonalizer/index.html) at
010: * University Of A Coruna
011: * All rights reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions are met:
015: *
016: * - Redistributions of source code must retain the above copyright notice,
017: * this list of conditions and the following disclaimer.
018: *
019: * - Redistributions in binary form must reproduce the above copyright notice,
020: * this list of conditions and the following disclaimer in the documentation
021: * and/or other materials provided with the distribution.
022: *
023: * - Neither the name of the University Of A Coruna nor the names of its
024: * contributors may be used to endorse or promote products derived from
025: * this software without specific prior written permission.
026: *
027: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
028: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
029: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
030: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
031: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
032: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
033: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
034: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
035: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
036: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
037: * POSSIBILITY OF SUCH DAMAGE.
038: *
039: */
040:
041: package es.udc.mypersonalizer.portal.controller.actions.content;
042:
043: import es.udc.mypersonalizer.kernel.controller.actions.DefaultAction;
044: import es.udc.mypersonalizer.kernel.model.actions.ActionProcessorSingleton;
045: import es.udc.mypersonalizer.kernel.model.editors.DesktopLayoutEditor;
046: import es.udc.mypersonalizer.kernel.model.editors.EditorFactory;
047: import es.udc.mypersonalizer.kernel.model.repository.interfaces.DesktopLayout;
048: import es.udc.mypersonalizer.kernel.util.exceptions.InstanceNotFoundException;
049: import es.udc.mypersonalizer.kernel.util.exceptions.InternalErrorException;
050: import es.udc.mypersonalizer.portal.controller.session.KeyChecker;
051: import es.udc.mypersonalizer.portal.controller.session.SessionManager;
052: import es.udc.mypersonalizer.portal.conventions.RequestParameterConventions;
053: import es.udc.mypersonalizer.portal.model.permissions.UserCredentials;
054: import es.udc.mypersonalizer.portal.model.types.content.WorkspaceEvent;
055: import javax.servlet.http.HttpServletRequest;
056: import javax.servlet.http.HttpServletResponse;
057: import org.apache.commons.beanutils.PropertyUtils;
058: import org.apache.struts.action.ActionForm;
059: import org.apache.struts.action.ActionForward;
060: import org.apache.struts.action.ActionMapping;
061:
062: /**
063: * This action changes the user's default workspace. It doesn't change the
064: * workspace being displayed, but just the one that is stablished as "default"
065: * and shown when the user logs in. It calls the model action called
066: * <tt>ChangeDefaultWorkspaceAction</tt>, which must be registered in
067: * configuration. It also changes the desktop layout stored in the session.<p>
068: *
069: * It receives as a parameter a struts action form which must have been
070: * populated with the following data:
071: * <ul>
072: * <li><tt>workspaceLayoutIdentifier</tt>: The identifier of the workspace
073: * layout which will be the new default.</li>
074: * </ul>
075: *
076: * This action requires a <tt>Success</tt> forward, which will usually point
077: * to the action which shows the desktop contents to the user to let him/her
078: * change them, which is usully called <tt>ChangeDesktopContent.do</tt>.<p>
079: *
080: *
081: * @author Daniel Fernandez
082: * @since 1.0
083: */
084: public class ChangeDefaultWorkspaceAction extends DefaultAction {
085:
086: /**
087: * Name of the model action for changing the default workspace.
088: * This is "ChangeDefaultWorkspaceAction".
089: */
090: private static final String CHANGE_DEFAULT_WORKSPACE_ACTION = "ChangeDefaultWorkspaceAction";
091:
092: protected ActionForward doExecute(ActionMapping mapping,
093: ActionForm form, HttpServletRequest request,
094: HttpServletResponse response) throws Exception {
095:
096: ActionProcessorSingleton actionProcessorSingleton = ActionProcessorSingleton
097: .getInstance();
098:
099: UserCredentials userCredentials = SessionManager
100: .getUserCredentials(request);
101:
102: /* We get the action parameters from the action form */
103: String workspaceLayoutIdentifierStr = (String) PropertyUtils
104: .getSimpleProperty(
105: form,
106: RequestParameterConventions.WORKSPACE_IDENTIFIER);
107: Long workspaceLayoutIdentifier = null;
108: try {
109: workspaceLayoutIdentifier = new Long(
110: workspaceLayoutIdentifierStr);
111: } catch (Exception e) {
112: throw new InternalErrorException("Badly formed parameters");
113: }
114:
115: /*
116: * If there are no workspaces, this action cannot be executed.
117: */
118: if (!SessionManager.getUserHasWorkspaces(request)) {
119: throw new NoActiveWorkspacesException(
120: "Cannot change layout");
121: }
122:
123: /*
124: * We have to check whether the workspace is one of the
125: * valid ones for the user's desktop.
126: */
127: if (!KeyChecker.isValidWorkspaceLayoutIdentifier(request,
128: workspaceLayoutIdentifier)) {
129: throw new InstanceNotFoundException(
130: workspaceLayoutIdentifier, "WorkspaceLayout");
131: }
132:
133: /*
134: * We get the desktopLayout from the Session, as we need its
135: * timeStamp and identifier.
136: */
137: DesktopLayout desktopLayout = SessionManager
138: .getDesktopLayout(request);
139: EditorFactory editorFactory = EditorFactory.getInstance();
140: DesktopLayoutEditor desktopLayoutEditor = editorFactory
141: .createDesktopLayoutEditor(desktopLayout.getProperty());
142:
143: Long desktopLayoutIdentifier = desktopLayout.getIdentifier();
144: Long timeStamp = desktopLayoutEditor.getTimeStamp();
145:
146: WorkspaceEvent workspaceEvent = new WorkspaceEvent(
147: userCredentials, desktopLayoutIdentifier,
148: workspaceLayoutIdentifier, timeStamp);
149:
150: DesktopLayout newDesktopLayout = (DesktopLayout) actionProcessorSingleton
151: .execute(CHANGE_DEFAULT_WORKSPACE_ACTION,
152: workspaceEvent);
153:
154: /*
155: * And we put the data into the session.
156: */
157: SessionManager.setDesktopLayout(request, newDesktopLayout);
158:
159: return mapping
160: .findForward(DefaultAction.ACTION_SUCCESS_FORWARD);
161: }
162:
163: }
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