Introduce a task, public flag don't allow editing other people's public tasks

api/src/com/todoroo/astrid/data/Task.java

@@ -171,6 +171,9 @@ public final class Task extends RemoteModel {
     /** whether task is read-only */
     public static final int FLAG_IS_READONLY = 1 << 2;
 
+    /** whether a task is public */
+    public static final int FLAG_PUBLIC = 1 << 3;
+
     // --- user id special values
 
     /** user id = doesn't exist/ignore it. For filtering in tags */

astrid/plugin-src/com/todoroo/astrid/actfm/sync/ActFmSyncService.java

@@ -1404,6 +1404,9 @@ public final class ActFmSyncService {
                 model.setFlag(Task.FLAGS, Task.FLAG_REPEAT_AFTER_COMPLETION, true);
             else
                 model.setFlag(Task.FLAGS, Task.FLAG_REPEAT_AFTER_COMPLETION, false);
+
+            String privacy = json.optString("privacy");
+            model.setFlag(Task.FLAGS, Task.FLAG_PUBLIC, privacy.equals("public"));
             model.setValue(Task.NOTES, json.optString("notes", ""));
             model.setValue(Task.DETAILS_DATE, 0L);
             model.setValue(Task.LAST_SYNC, DateUtilities.now() + 1000L);

astrid/src/com/todoroo/astrid/adapter/TaskAdapter.java

@@ -1048,7 +1048,8 @@ public class TaskAdapter extends CursorAdapter implements Filterable {
                 return;
 
             long taskId = viewHolder.task.getId();
-            if (!viewHolder.task.getFlag(Task.FLAGS, Task.FLAG_IS_READONLY)) {
+            if (!viewHolder.task.getFlag(Task.FLAGS, Task.FLAG_IS_READONLY) &&
+                    !(viewHolder.task.getFlag(Task.FLAGS, Task.FLAG_PUBLIC) && viewHolder.task.getValue(Task.USER_ID) != Task.USER_ID_SELF)) {
                 editTask(taskId);
             }
         }