Support replying to proposed file

Author: ArneBab

src/freenet/node/useralerts/DownloadFeedUserAlert.java

@@ -10,7 +10,7 @@
 import freenet.node.PeerNode;
 import freenet.support.HTMLNode;
 
-public class DownloadFeedUserAlert extends AbstractUserAlert {
+public class DownloadFeedUserAlert extends AbstractUserAlert implements UserAlertFromPeer {
 	private final WeakReference<PeerNode> peerRef;
 	private final FreenetURI uri;
 	private final int fileNumber;
@@ -47,6 +47,11 @@ public String getText() {
 		return sb.toString();
 	}
 
+    @Override
+    public String getMessageText() {
+        return description == null ? "" : description;
+    }
+
 	@Override
 	public String getShortText() {
 		return getTitle();
@@ -71,6 +76,14 @@ public HTMLNode getHTMLText() {
 		return alertNode;
 	}
 
+	@Override
+	public PeerNode getSourceNode() {
+		if (peerRef == null) {
+			return null;
+		}
+		return peerRef.get();
+	}
+
 	@Override
 	public String dismissButtonText() {
 		return l10n("delete");

src/freenet/node/useralerts/N2NTMUserAlert.java

@@ -15,7 +15,7 @@
 import freenet.support.HTMLNode;
 
 // Node To Node Text Message User Alert: messaging between users
-public class N2NTMUserAlert extends AbstractUserAlert {
+public class N2NTMUserAlert extends AbstractUserAlert implements UserAlertFromPeer {
 	private final WeakReference<PeerNode> peerRef;
 	private final String messageText;
 	private final int fileNumber;

src/freenet/node/useralerts/UserAlertFromPeer.java

@@ -0,0 +1,13 @@
+/* This code is part of Freenet. It is distributed under the GNU General
+ * Public License, version 2 (or at your option any later version). See
+ * http://www.gnu.org/ for further details of the GPL. */
+package freenet.node.useralerts;
+
+import freenet.node.PeerNode;
+
+public interface UserAlertFromPeer {
+
+	public PeerNode getSourceNode();
+    public String getMessageText();
+
+}

src/freenet/node/useralerts/UserAlertManager.java

@@ -224,16 +224,16 @@ public HTMLNode renderAlert(UserAlert userAlert) {
 		userAlertNode.addChild("div", "class", "infobox-header", userAlert.getTitle());
 		HTMLNode alertContentNode = userAlertNode.addChild("div", "class", "infobox-content");
 		alertContentNode.addChild(userAlert.getHTMLText());
-		if (userAlert instanceof N2NTMUserAlert) {
-			N2NTMUserAlert n2ntmUserAlert = (N2NTMUserAlert) userAlert;
-			alertContentNode.addChild(renderReplyButton(n2ntmUserAlert, n2ntmUserAlert.getSourceNode()));
+		if (userAlert instanceof UserAlertFromPeer) {
+			UserAlertFromPeer n2nUserAlert = (UserAlertFromPeer) userAlert;
+			alertContentNode.addChild(renderReplyButton(n2nUserAlert, n2nUserAlert.getSourceNode()));
 		}
 		alertContentNode.addChild(renderDismissButton(userAlert, null));
 
 		return userAlertNode;
 	}
 
-	private HTMLNode renderReplyButton(N2NTMUserAlert userAlert, PeerNode peerNode) {
+	private HTMLNode renderReplyButton(UserAlertFromPeer userAlert, PeerNode peerNode) {
 		HTMLNode form = new HTMLNode("form",
 					new String[]{"method", "action"},
 					new String[]{"post", "/send_n2ntm/"});