/************************************************************** * * 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_embed_StorageStream_idl__ #define __com_sun_star_embed_StorageStream_idl__ #ifndef __com_sun_star_embed_XEncryptionProtectedSource_idl__ #include #endif #ifndef __com_sun_star_lang_XComponent_idl__ #include #endif #ifndef __com_sun_star_beans_XPropertySet_idl__ #include #endif #ifndef __com_sun_star_io_XStream_idl__ #include #endif #ifndef __com_sun_star_io_XSeekable_idl__ #include #endif //============================================================================ module com { module sun { module star { module embed { //============================================================================ /** This is a service that represents a stream that can be provided by XStorage::openStreamElement() call implemented by Storage service.

In case a stream is open with readwrite access only one instance of the stream can exist.

*/ published service StorageStream { // ----------------------------------------------------------------------- /** allows to get access to XInputStream and XOutputStream implementations.

In case the storage stream is open readonly the returned reference to XOutputStream will be empty.

*/ interface ::com::sun::star::io::XStream; // ----------------------------------------------------------------------- /** allows to control object lifetime.

A storage stream is created by a storage and has a restrictions depending on the mode the stream is opened in.

In case a stream is opened with read-write access only one instance of the stream can exist. It means that the stream can not be reopened even for readonly access until the readwrite instance is disposed. From the other side it is possible to open multiple streams for readonly access. But because of the rule mentioned above it will not be possible to open the stream for read-write access until all the readonly instances are disposed.

The stream must be disposed by XComponent::dispose() call or by explicit closing of input and output ( if provided ) streams implementations with XInputStream::closeInput() and XOutputStream::closeOutput() calls.

When a stream is disposed all the changes that were done for it are automatically flashed, so that they becomes visible from parent storage. It is also possible to flash the stream explicitly.

In case parent storage is disposed the stream is disposed automatically.

In case a stream is disposed any call to it's methods should result in DisposedException.

*/ interface ::com::sun::star::lang::XComponent; // ----------------------------------------------------------------------- /** allows to get access to stream properties. */ interface ::com::sun::star::beans::XPropertySet; // ----------------------------------------------------------------------- /** allows to seek to a specified position within the stream.

This interface must be supported in case either seekable readonly or read-write access is requested.

*/ [optional] interface ::com::sun::star::io::XSeekable; // ----------------------------------------------------------------------- /** allows to set password to the stream.

This interface must be supported by a stream with readwrite access to allow to set a password that should be used next time the stream is stored.

If the password is set or changed by this interface and the stream is closed the new password should be used to get access to the stream next time.

*/ [optional] interface ::com::sun::star::embed::XEncryptionProtectedSource; // ----------------------------------------------------------------------- /** allows to get and set media type of the stream. */ [property] string MediaType; // ----------------------------------------------------------------------- /** specifies if the stream should be compressed next time it is stored. */ [property] boolean IsCompressed; // ----------------------------------------------------------------------- /** allows to detect if the stream is encrypted.

The property value means that the stream is currently encrypted. - the stream is not encrypted.

If somebody sets a password explicitly by using XEncryptionProtectedSource interface the value is automatically set to . If the interface is used to remove the encryption - the value is automatically set to .

*/ [property, readonly] boolean IsEncrypted; // ----------------------------------------------------------------------- /** specifies whether the stream will become encrypted next time the common storage password holder is commited.

The property value means that the stream will become encrypted after the closest storage in the parent hierarchy, that has common storage password, is commited. - the stream will not react to commit of such a storage.

In case stream is not encrypted and the property is set to , the stream will stay nonencrypted until the closest storage in the parent hierarchy, that has common storage password, is commited. On the commit the stream will be encrypted with the common storage password. If there is no such storage in the hierarchy the stream will not be encrypted at all. Thus this property must be set very carefully.

If somebody sets a password explicitly by using XEncryptionProtectedSource interface the value is automatically set to and the stream becomes encrypted with specified password immediatelly.

In case stream is encrypted one and the value is set to the stream becomes nonencrypted until the common storage password holder is commited. The data about previously set password ( if any ) will be removed and the stream can be accessed as nonencrypted stream.

*/ [property] boolean UseCommonStoragePasswordEncryption; // ----------------------------------------------------------------------- /** allows to detect size of the stream in bytes. */ [property, readonly] long Size; }; //============================================================================ }; }; }; }; #endif