Add custom filter criteria for hidden tasks

app/src/main/java/com/todoroo/astrid/api/PermaSql.java

@@ -36,7 +36,7 @@ public final class PermaSql {
   /** value to be replaced by approximate end of day next month as long */
   public static final String VALUE_EOD_NEXT_MONTH = "EODM()"; // $NON-NLS-1$
   /** value to be replaced with the current time as long */
-  private static final String VALUE_NOW = "NOW()"; // $NON-NLS-1$
+  public static final String VALUE_NOW = "NOW()"; // $NON-NLS-1$
   /** value to be replaced by noon yesterday as long */
   private static final String VALUE_NOON_YESTERDAY = "NOONY()"; // $NON-NLS-1$
   /** value to be replaced by noon tomorrow as long */

app/src/main/java/org/tasks/filters/FilterCriteriaProvider.kt

@@ -34,6 +34,7 @@ class FilterCriteriaProvider @Inject constructor(
             IDENTIFIER_TAG_CONTAINS -> tagNameContainsFilter
             IDENTIFIER_RECUR -> recurringFilter
             IDENTIFIER_COMPLETED -> completedFilter
+            IDENTIFIER_HIDDEN -> hiddenFilter
             else -> throw RuntimeException("Unknown identifier: $identifier")
         }
     }
@@ -61,6 +62,7 @@ class FilterCriteriaProvider @Inject constructor(
         result.add(caldavFilterCriteria())
         result.add(recurringFilter)
         result.add(completedFilter)
+        result.add(hiddenFilter)
         return result
     }
 
@@ -108,6 +110,16 @@ class FilterCriteriaProvider @Inject constructor(
                         .toString()
         )
 
+    private val hiddenFilter: CustomFilterCriterion
+        get() = BooleanCriterion(
+                IDENTIFIER_HIDDEN,
+                context.getString(R.string.widget_due_date_hidden),
+                select(Task.ID)
+                        .from(Task.TABLE)
+                        .where(field("${Task.HIDE_UNTIL.gt(PermaSql.VALUE_NOW)}").eq(1))
+                        .toString()
+        )
+
     val tagNameContainsFilter: CustomFilterCriterion
         get() = TextInputCriterion(
                 IDENTIFIER_TAG_CONTAINS,
@@ -252,5 +264,6 @@ class FilterCriteriaProvider @Inject constructor(
         private const val IDENTIFIER_TAG_CONTAINS = "tag_contains"
         private const val IDENTIFIER_RECUR = "tag_recur"
         private const val IDENTIFIER_COMPLETED = "tag_completed"
+        private const val IDENTIFIER_HIDDEN = "tag_hidden"
     }
 }