X-Git-Url: https://code.wpia.club/?p=gigi.git;a=blobdiff_plain;f=src%2Forg%2Fcacert%2Fgigi%2Fpages%2FPage.java;h=054a1e52020bf1172a095ea26a82ce5c3b4595dd;hp=afe96dc76f4dddba3820e0b05da08f91851f3763;hb=17a15662212d973d12ed4cea3f5eaa9c0d1169ed;hpb=6eca3763ffd17eaa7651db4dfdff48f259135865

diff --git a/src/org/cacert/gigi/pages/Page.java b/src/org/cacert/gigi/pages/Page.java
index afe96dc7..054a1e52 100644
--- a/src/org/cacert/gigi/pages/Page.java
+++ b/src/org/cacert/gigi/pages/Page.java
@@ -1,30 +1,168 @@
 package org.cacert.gigi.pages;
 
 import java.io.IOException;
+import java.net.URL;
+import java.util.Enumeration;
+import java.util.Locale;
 
 import javax.servlet.ServletRequest;
-import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
 
-public abstract class Page {
-	private String title;
+import org.cacert.gigi.PermissionCheckable;
+import org.cacert.gigi.dbObjects.User;
+import org.cacert.gigi.localisation.Language;
+import org.cacert.gigi.output.template.Template;
+import org.cacert.gigi.util.AuthorizationContext;
 
-	public Page(String title) {
-		this.title = title;
-	}
+/**
+ * This class encapsulates a sub page of Gigi. A template residing nearby this
+ * class with name <className>.templ will be loaded automatically.
+ */
+public abstract class Page implements PermissionCheckable {
 
-	public abstract void doGet(ServletRequest req, ServletResponse resp)
-			throws IOException;
+    private String title;
 
-	public void doPost(ServletRequest req, ServletResponse resp)
-			throws IOException {
-		doGet(req, resp);
-	}
+    private Template defaultTemplate;
 
-	public String getTitle() {
-		return title;
-	}
+    public Page(String title) {
+        this.title = title;
+        URL resource = getClass().getResource(getClass().getSimpleName() + ".templ");
+        if (resource != null) {
+            defaultTemplate = new Template(resource);
+        }
+    }
+
+    /**
+     * Retrieves the default template (<className>.templ) which has
+     * already been loaded.
+     * 
+     * @return the default template.
+     */
+    public Template getDefaultTemplate() {
+        return defaultTemplate;
+    }
+
+    /**
+     * This method can be overridden to execute code and do stuff before the
+     * default template is applied.
+     * 
+     * @param req
+     *            the request to handle.
+     * @param resp
+     *            the response to write to
+     * @return true, if the request is consumed and the default template should
+     *         not be applied.
+     * @throws IOException
+     *             if output goes wrong.
+     */
+    public boolean beforeTemplate(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+        if (req.getMethod().equals("POST")) {
+            return beforePost(req, resp);
+        }
+        return false;
+    }
+
+    /**
+     * This method can be overridden to execute code and do stuff before the
+     * default template is applied when the request is a post request and the
+     * default implementation of
+     * {@link #beforeTemplate(HttpServletRequest, HttpServletResponse)} is
+     * called.
+     * 
+     * @param req
+     *            the request to handle.
+     * @param resp
+     *            the response to write to
+     * @return true, if the request is consumed and the default template should
+     *         not be applied.
+     * @throws IOException
+     *             if output goes wrong.
+     */
+    public boolean beforePost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+        return false;
+    }
+
+    /**
+     * This method is called to generate the content inside the default
+     * template.
+     * 
+     * @param req
+     *            the request to handle.
+     * @param resp
+     *            the response to write to
+     * @throws IOException
+     *             if output goes wrong.
+     */
+    public abstract void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException;
+
+    /**
+     * Same as {@link #doGet(HttpServletRequest, HttpServletResponse)} but for
+     * POST requests. By default they are redirected to
+     * {@link #doGet(HttpServletRequest, HttpServletResponse)};
+     * 
+     * @param req
+     *            the request to handle.
+     * @param resp
+     *            the response to write to
+     * @throws IOException
+     *             if output goes wrong.
+     */
+    public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+        doGet(req, resp);
+    }
+
+    /**
+     * Returns true, if this page requires login. Default is <code>true</code>
+     * 
+     * @return if the page needs login.
+     */
+    public boolean needsLogin() {
+        return true;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public static Language getLanguage(ServletRequest req) {
+        HttpSession session = ((HttpServletRequest) req).getSession();
+        synchronized (session) {
+
+            Locale sessval = (Locale) session.getAttribute(Language.SESSION_ATTRIB_NAME);
+            if (sessval != null) {
+                Language l = Language.getInstance(sessval);
+                if (l != null) {
+                    return l;
+                }
+            }
+            Enumeration<Locale> langs = req.getLocales();
+            while (langs.hasMoreElements()) {
+                Locale c = langs.nextElement();
+                Language l = Language.getInstance(c);
+                if (l != null) {
+                    session.setAttribute(Language.SESSION_ATTRIB_NAME, l.getLocale());
+                    return l;
+                }
+            }
+            session.setAttribute(Language.SESSION_ATTRIB_NAME, Locale.ENGLISH);
+            return Language.getInstance(Locale.ENGLISH);
+        }
+    }
+
+    public static String translate(ServletRequest req, String string) {
+        Language l = getLanguage(req);
+        return l.getTranslation(string);
+    }
+
+    public static User getUser(HttpServletRequest req) {
+        return LoginPage.getUser(req);
+    }
+
+    @Override
+    public boolean isPermitted(AuthorizationContext ac) {
+        return !needsLogin() || ac != null;
+    }
 
-	public void setTitle(String title) {
-		this.title = title;
-	}
 }