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- /* *************************************************************************
-
- IT Mill Toolkit
-
- Development of Browser User Intarfaces Made Easy
-
- Copyright (C) 2000-2006 IT Mill Ltd
-
- *************************************************************************
-
- This product is distributed under commercial license that can be found
- from the product package on license/license.txt. Use of this product might
- require purchasing a commercial license from IT Mill Ltd. For guidelines
- on usage, see license/licensing-guidelines.html
-
- *************************************************************************
-
- For more information, contact:
-
- IT Mill Ltd phone: +358 2 4802 7180
- Ruukinkatu 2-4 fax: +358 2 4802 7181
- 20540, Turku email: info@itmill.com
- Finland company www: www.itmill.com
-
- Primary source for information and releases: www.itmill.com
-
- ********************************************************************** */
-
- package com.itmill.toolkit.terminal.web;
-
- import java.io.File;
- import java.io.PrintWriter;
- import java.io.StringWriter;
- import java.util.Collection;
- import java.util.Collections;
- import java.util.Iterator;
- import java.util.LinkedList;
- import java.util.List;
- import java.util.WeakHashMap;
-
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpSession;
-
- import com.itmill.toolkit.Application;
- import com.itmill.toolkit.service.ApplicationContext;
- import com.itmill.toolkit.ui.Window;
-
- /**
- * Web application context for the IT Mill Toolkit applications.
- *
- * @author IT Mill Ltd.
- * @version
- * @VERSION@
- * @since 3.1
- */
- public class WebApplicationContext implements ApplicationContext {
-
- private List listeners;
-
- private HttpSession session;
-
- private WeakHashMap formActions = new WeakHashMap();
-
- /** Create a new Web Application Context. */
- WebApplicationContext(HttpSession session) {
- this.session = session;
- }
-
- /**
- * Get the form action for given window.
- *
- * By default, this action is "", which preserves the current url. Commonly
- * this is wanted to be set to <code>application.getUrl().toString()</code>
- * or <code>window.getUrl().toString()</code> in order to clean any local
- * links or parameters set from the action.
- *
- * @param window
- * Window for which the action is queried
- * @return Action to be set into Form action attribute
- */
- public String getWindowFormAction(Window window) {
- String action = (String) formActions.get(window);
- return action == null ? "" : action;
- }
-
- /**
- * Set the form action for given window.
- *
- * By default, this action is "", which preserves the current url. Commonly
- * this is wanted to be set to <code>application.getUrl().toString()</code>
- * or <code>window.getUrl().toString()</code> in order to clean any local
- * links or parameters set from the action.
- *
- * @param window
- * Window for which the action is set
- * @param action
- * New action for the window.
- */
- public void setWindowFormAction(Window window, String action) {
- if (action == null || action == "")
- formActions.remove(window);
- else
- formActions.put(window, action);
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.itmill.toolkit.service.ApplicationContext#getBaseDirectory()
- */
- public File getBaseDirectory() {
- String realPath = session.getServletContext().getRealPath("/");
- if (realPath == null)
- return null;
- return new File(realPath);
- }
-
- /**
- * Get the http-session application is running in.
- *
- * @return HttpSession this application context resides in
- */
- public HttpSession getHttpSession() {
- return session;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.itmill.toolkit.service.ApplicationContext#getApplications()
- */
- public Collection getApplications() {
- LinkedList applications = (LinkedList) session
- .getAttribute(ApplicationServlet.SESSION_ATTR_APPS);
-
- return Collections
- .unmodifiableCollection(applications == null ? (new LinkedList())
- : applications);
- }
-
- /**
- * Get application context for HttpSession.
- *
- * @return application context for HttpSession.
- */
- static public WebApplicationContext getApplicationContext(
- HttpSession session) {
- return new WebApplicationContext(session);
- }
-
- /*
- * (non-Javadoc)
- *
- * @see java.lang.Object#equals(java.lang.Object)
- */
- public boolean equals(Object obj) {
- return session.equals(obj);
- }
-
- /*
- * (non-Javadoc)
- *
- * @see java.lang.Object#hashCode()
- */
- public int hashCode() {
- return session.hashCode();
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.itmill.toolkit.service.ApplicationContext#addTransactionListener(com.itmill.toolkit.service.ApplicationContext.TransactionListener)
- */
- public void addTransactionListener(TransactionListener listener) {
- if (this.listeners == null)
- this.listeners = new LinkedList();
- this.listeners.add(listener);
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.itmill.toolkit.service.ApplicationContext#removeTransactionListener(com.itmill.toolkit.service.ApplicationContext.TransactionListener)
- */
- public void removeTransactionListener(TransactionListener listener) {
- if (this.listeners != null)
- this.listeners.remove(listener);
-
- }
-
- /** Notify transaction start */
- protected void startTransaction(Application application,
- HttpServletRequest request) {
- if (this.listeners == null)
- return;
- for (Iterator i = this.listeners.iterator(); i.hasNext();) {
- ((ApplicationContext.TransactionListener) i.next())
- .transactionStart(application, request);
- }
- }
-
- /** Notify transaction end */
- protected void endTransaction(Application application,
- HttpServletRequest request) {
- if (this.listeners == null)
- return;
-
- LinkedList exceptions = null;
- for (Iterator i = this.listeners.iterator(); i.hasNext();)
- try {
- ((ApplicationContext.TransactionListener) i.next())
- .transactionEnd(application, request);
- } catch (RuntimeException t) {
- if (exceptions == null)
- exceptions = new LinkedList();
- exceptions.add(t);
- }
-
- // If any runtime exceptions occurred, throw a combined exception
- if (exceptions != null) {
- StringBuffer msg = new StringBuffer();
- for (Iterator i = listeners.iterator(); i.hasNext();) {
- RuntimeException e = (RuntimeException) i.next();
- if (msg.length() == 0)
- msg.append("\n\n--------------------------\n\n");
- msg.append(e.getMessage() + "\n");
- StringWriter trace = new StringWriter();
- e.printStackTrace(new PrintWriter(trace,true));
- msg.append(trace.toString());
- }
- throw new RuntimeException(msg.toString());
- }
- }
-
- }
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