/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * 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 .
*/
/** @short implement XFrames, XIndexAccess and XElementAccess interfaces as helper for services @descr Use this class as helper for these interfaces. We share mutex and framecontainer with our owner. The framecontainer is a member of it from type "FrameContainer". That means; we have the same information as our owner. In current implementation we use mutex and lock-mechanism to prevent against compete access. In future we plan support of semaphore!
@devstatus deprecated
@ATTENTION Don't use this class as direct member - use it dynamically. Do not derive from this class. We hold a weakreference to our owner not to our superclass.
*/ class OFrames final : public ::cppu::WeakImplHelper< css::frame::XFrames >
{ public:
/** @short standard ctor @descr These initialize a new instance of this class with all needed information for work. We share framecontainer with owner implementation! It's a threadsafe container. @param xOwner , reference to our owner. We hold a wekreference to prevent us against cross-references! @param pFrameContainer , pointer to shared framecontainer of owner. It's valid only, if weakreference is valid!
*/
OFrames( const css::uno::Reference< css::frame::XFrame >& xOwner ,
FrameContainer* pFrameContainer );
// XFrames
/** @short append frame to container @descr We share the container with our owner. We can do this only, if no lock is set on container. Valid references are accepted only!
@seealso class FrameContainer
@param "xFrame", reference to an existing frame to append. @onerror We do nothing in release or throw an assert in debug version.
*/ virtualvoid SAL_CALL append( const css::uno::Reference< css::frame::XFrame >& xFrame ) override;
/** @short remove frame from container @descr This is the companion to append(). We only accept valid references and don't work, if a lock is set.
@seealso class FrameContainer
@param "xFrame", reference to an existing frame to remove. @onerror We do nothing in release or throw an assert in debug version.
*/ virtualvoid SAL_CALL remove( const css::uno::Reference< css::frame::XFrame >& xFrame ) override;
/** @short return list of all applicable frames for given flags @descr Call these to get a list of all frames, which are match with given search flags. @param "nSearchFlag", flags to search right frames. @return A list of founded frames.
@onerror An empty list is returned.
*/ virtual css::uno::Sequence< css::uno::Reference< css::frame::XFrame > > SAL_CALL queryFrames( sal_Int32 nSearchFlags ) override;
// XIndexAccess
/** @short get count of all current frames in container @descr This is the beginning of full index-access. With a count you can step over all items in container. Next call should be getByIndex(). But these mechanism works only, if no lock in container is set!
@seealso class FrameContainer @seealso method getByIndex() @return Count of current items in container.
@onerror If a lock is set, we return 0 for prevent further access!
*/ virtual sal_Int32 SAL_CALL getCount() override;
/** @short get specified container item by index @descr If you called getCount() successful - this method return the specified element as an Any. You must observe the range from 0 to count-1! Otherwise an IndexOutOfBoundsException is thrown.
@seealso class FrameContainer @seealso method getCount()
@param "nIndex", valid index to get container item. @return A container item (specified by index) wrapped in an Any.
@onerror If a lock is set, we return an empty Any! @onerror If index out of range, an IndexOutOfBoundsException is thrown.
*/ virtual css::uno::Any SAL_CALL getByIndex( sal_Int32 nIndex ) override;
// XElementAccess
/** @short get uno-type of all container items @descr In current implementation type is fixed to XFrame! (container-lock is ignored) @return A uno-type descriptor.
*/ virtual css::uno::Type SAL_CALL getElementType() override;
/** @short get fill state of current container @descr Call these to get information about, if items exist in container or not. (container-lock is ignored) @return sal_True, if container contains some items. @return sal_False, otherwise.
@onerror We return sal_False.
*/ virtual sal_Bool SAL_CALL hasElements() override;
private:
/** @short standard destructor @descr This method destruct an instance of this class and clear some member. This method is protected, because it's not allowed to use this class as a member! You MUST use a dynamical instance (pointer). That's the reason for a protected dtor.
*/ virtual ~OFrames() override;
/** @short reset instance to default values @descr There are two ways to delete an instance of this class.<BR> 1) delete with destructor<BR> 2) dispose from parent or factory ore ...<BR> This method do the same for both ways! It free used memory and release references ...
/** @short append one sequence to another @descr There is no operation to add to sequences! Use this helper-method to do this.
@seealso class Sequence
@param "seqDestination", reference to sequence on which operation will append the other sequence. @param "seqSource" , reference to sequence for append. @return "seqDestination" is parameter AND return value at the same time.
*/ staticvoid impl_appendSequence( css::uno::Sequence< css::uno::Reference< css::frame::XFrame > >& seqDestination , const css::uno::Sequence< css::uno::Reference< css::frame::XFrame > >& seqSource );
css::uno::WeakReference< css::frame::XFrame > m_xOwner; /// reference to owner of this instance (Hold no hard reference!)
FrameContainer* m_pFrameContainer; /// with owner shared list to hold all direct children of an XFramesSupplier bool m_bRecursiveSearchProtection; /// flag to protect against recursive searches of frames at parents
};
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