| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| #ifndef __com_sun_star_beans_Optional_idl__ |
| #define __com_sun_star_beans_Optional_idl__ |
| |
| module com { module sun { module star { module beans { |
| |
| /** |
| An optional value of a given type. |
| |
| <p>This structure is used as the type of interface attributes corresponding |
| to instances of <type scopye="com::sun::star::beans">Property</type> that |
| have the <const |
| scope="com::sun::star::beans">PropertyAttribute::MAYBEVOID</const>. It might |
| also be useful in other situations, for example as the return type of an |
| interface method.</p> |
| */ |
| published struct Optional<T> { |
| /** |
| Marks this structure instance as having an actual value. |
| */ |
| boolean IsPresent; |
| |
| /** |
| The actual value of this structure instance. |
| |
| <p>If no actual value is present, a producer of such a structure instance |
| should leave this member defaulted, and a consumer of such a structure |
| instance should ignore the specific value stored in this member.</p> |
| */ |
| T Value; |
| }; |
| |
| }; }; }; }; |
| |
| #endif |