From dc0213710640911a796880fcd68a75d2b576918d Mon Sep 17 00:00:00 2001
From: iNPUTmice <daniel@gultsch.de>
Date: Fri, 5 Sep 2014 13:29:45 +0200
Subject: [PATCH] warn user if no presence subscription exists

---
 res/values/strings.xml                        |  3 ++
 .../siacs/conversations/ui/XmppActivity.java  | 34 +++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/res/values/strings.xml b/res/values/strings.xml
index f655c1a8a..5e8d4f550 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -241,5 +241,8 @@
     <string name="enable">Enable</string>
     <string name="conference_requires_password">Conference requires password</string>
     <string name="enter_password">Enter password</string>
+    <string name="missing_presence_updates">Missing presence updates from contact</string>
+    <string name="request_presence_updates">Please request presence updates from your contact first.\n\n<small>This will be used to determine what client(s) your contact is using.</small></string>
+    <string name="request_now">Request now</string>
 
 </resources>
\ No newline at end of file
diff --git a/src/eu/siacs/conversations/ui/XmppActivity.java b/src/eu/siacs/conversations/ui/XmppActivity.java
index 72902c65b..7d903e864 100644
--- a/src/eu/siacs/conversations/ui/XmppActivity.java
+++ b/src/eu/siacs/conversations/ui/XmppActivity.java
@@ -36,11 +36,13 @@ import android.os.IBinder;
 import android.text.InputType;
 import android.util.DisplayMetrics;
 import android.util.Log;
+import android.view.Gravity;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.EditText;
 import android.widget.ImageView;
+import android.widget.Toast;
 
 public abstract class XmppActivity extends Activity {
 
@@ -298,6 +300,26 @@ public abstract class XmppActivity extends Activity {
 		builder.create().show();
 	}
 
+	private void showAskForPresenceDialog(final Contact contact) {
+		AlertDialog.Builder builder = new AlertDialog.Builder(this);
+		builder.setTitle(contact.getJid());
+		builder.setMessage(R.string.request_presence_updates);
+		builder.setNegativeButton(getString(R.string.cancel), null);
+		builder.setPositiveButton(getString(R.string.request_now),
+				new DialogInterface.OnClickListener() {
+
+					@Override
+					public void onClick(DialogInterface dialog, int which) {
+						if (xmppConnectionServiceBound) {
+							xmppConnectionService.sendPresencePacket(contact.getAccount(),
+									xmppConnectionService.getPresenceGenerator()
+											.requestPresenceUpdatesFrom(contact));
+						}
+					}
+				});
+		builder.create().show();
+	}
+
 	protected void quickEdit(String previousValue, OnValueEdited callback) {
 		quickEdit(previousValue, callback, false);
 	}
@@ -346,6 +368,18 @@ public abstract class XmppActivity extends Activity {
 		} else {
 			Presences presences = contact.getPresences();
 			if (presences.size() == 0) {
+				if (!contact.getOption(Contact.Options.TO)
+						&& !contact.getOption(Contact.Options.ASKING)
+						&& contact.getAccount().getStatus() == Account.STATUS_ONLINE) {
+					showAskForPresenceDialog(contact);
+					return;
+				} else if (!contact.getOption(Contact.Options.TO)) {
+					Toast toast = Toast.makeText(this,
+							R.string.missing_presence_updates,
+							Toast.LENGTH_LONG);
+					toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
+					toast.show();
+				}
 				conversation.setNextPresence(null);
 				listener.onPresenceSelected();
 			} else if (presences.size() == 1) {