/* -*- 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 .
*/
OFrames::OFrames( const css::uno::Reference< XFrame >& xOwner ,
FrameContainer* pFrameContainer )
: m_xOwner ( xOwner )
, m_pFrameContainer ( pFrameContainer )
, m_bRecursiveSearchProtection( false )
{ // An instance of this class can only work with valid initialization. // We share the mutex with our owner class, need a valid factory to instantiate new services and // use the access to our owner for some operations.
SAL_WARN_IF( !xOwner.is() || !pFrameContainer, "fwk", "OFrames::OFrames(): Invalid parameter detected!" );
}
// Safe impossible cases // Method is not defined for ALL incoming parameters!
SAL_WARN_IF( !xFrame.is(), "fwk", "OFrames::append(): Invalid parameter detected!" );
// Do the follow only, if owner instance valid! // Lock owner for follow operations - make a "hard reference"!
css::uno::Reference< XFramesSupplier > xOwner( m_xOwner.get(), UNO_QUERY ); if ( xOwner.is() )
{ // Append frame to the end of the container ...
m_pFrameContainer->append( xFrame ); // Set owner of this instance as parent of the new frame in container!
xFrame->setCreator( xOwner );
} // Else; Do nothing! Our owner is dead.
SAL_WARN_IF( !xOwner.is(), "fwk", "OFrames::append():Our owner is dead - you can't append any frames ...!" );
}
// Safe impossible cases // Method is not defined for ALL incoming parameters!
SAL_WARN_IF( !xFrame.is(), "fwk", "OFrames::remove(): Invalid parameter detected!" );
// Do the follow only, if owner instance valid! // Lock owner for follow operations - make a "hard reference"!
css::uno::Reference< XFramesSupplier > xOwner( m_xOwner.get(), UNO_QUERY ); if ( xOwner.is() )
{ // Search frame and remove it from container ...
m_pFrameContainer->remove( xFrame ); // Don't reset owner-property of removed frame! // This must do the caller of this method himself. // See documentation of interface XFrames for further information.
} // Else; Do nothing! Our owner is dead.
SAL_WARN_IF( !xOwner.is(), "fwk", "OFrames::remove(): Our owner is dead - you can't remove any frames ...!" );
}
// Safe impossible cases // Method is not defined for ALL incoming parameters!
SAL_WARN_IF( !impldbg_checkParameter_queryFrames( nSearchFlags ), "fwk", "OFrames::queryFrames(): Invalid parameter detected!" );
// Do the follow only, if owner instance valid. // Lock owner for follow operations - make a "hard reference"!
css::uno::Reference< XFrame > xOwner( m_xOwner.get(), UNO_QUERY ); if ( xOwner.is() )
{ // Work only, if search was not started here ...! if( !m_bRecursiveSearchProtection )
{ // This class is a helper for services, which must implement XFrames. // His parent and children are MY parent and children to. // All searchflags are supported by this implementation! // If some flags should not be supported - don't call me with this flags!!!
// Search with AUTO-flag is not supported yet! // We think about right implementation.
SAL_WARN_IF( (nSearchFlags & FrameSearchFlag::AUTO), "fwk", "OFrames::queryFrames(): Search with AUTO-flag is not supported yet!" );
// Search for ALL and GLOBAL is superfluous! // We support all necessary flags, from which these two flags are derived. // ALL = PARENT + SELF + CHILDREN + SIBLINGS // GLOBAL = ALL + TASKS
// Add parent to list ... if any exist! if( nSearchFlags & FrameSearchFlag::PARENT )
{
css::uno::Reference< XFrame > xParent = xOwner->getCreator(); if( xParent.is() )
{
impl_appendSequence( seqFrames, { xParent } );
}
}
// Add owner to list if SELF is searched. if( nSearchFlags & FrameSearchFlag::SELF )
{
impl_appendSequence( seqFrames, { xOwner } );
}
// Add SIBLINGS to list. if( nSearchFlags & FrameSearchFlag::SIBLINGS )
{ // Else; start a new search. // Protect this instance against recursive calls from parents.
m_bRecursiveSearchProtection = true; // Ask parent of my owner for frames and append results to return list.
css::uno::Reference< XFramesSupplier > xParent = xOwner->getCreator(); // If a parent exist ... if ( xParent.is() )
{ // ... ask him for right frames.
impl_appendSequence( seqFrames, xParent->getFrames()->queryFrames( nSearchFlags ) );
} // We have all searched information. // Reset protection-mode.
m_bRecursiveSearchProtection = false;
}
// If searched for children, step over all elements in container and collect the information. if ( nSearchFlags & FrameSearchFlag::CHILDREN )
{ // Don't search for parents, siblings and self at children! // These things are supported by this instance himself.
sal_Int32 const nChildSearchFlags = FrameSearchFlag::SELF | FrameSearchFlag::CHILDREN; // Step over all items of container and ask children for frames.
sal_uInt32 nCount = m_pFrameContainer->getCount(); for ( sal_uInt32 nIndex=0; nIndex<nCount; ++nIndex )
{ // We don't must control this conversion. // We have done this at append()!
css::uno::Reference< XFramesSupplier > xItem( (*m_pFrameContainer)[nIndex], UNO_QUERY );
impl_appendSequence( seqFrames, xItem->getFrames()->queryFrames( nChildSearchFlags ) );
}
}
}
} // Else; Do nothing! Our owner is dead.
SAL_WARN_IF( !xOwner.is(), "fwk", "OFrames::queryFrames(): Our owner is dead - you can't query for frames ...!" );
// Return result of this operation. return seqFrames;
}
// Set default return value.
sal_Int32 nCount = 0;
// Do the follow only, if owner instance valid. // Lock owner for follow operations - make a "hard reference"!
css::uno::Reference< XFrame > xOwner( m_xOwner.get(), UNO_QUERY ); if ( xOwner.is() )
{ // Set CURRENT size of container for return.
nCount = m_pFrameContainer->getCount();
}
// Return result. return nCount;
}
// XIndexAccess
Any SAL_CALL OFrames::getByIndex( sal_Int32 nIndex )
{
SolarMutexGuard g;
sal_uInt32 nCount = m_pFrameContainer->getCount(); if ( nIndex < 0 || ( sal::static_int_cast< sal_uInt32 >( nIndex ) >= nCount )) throw IndexOutOfBoundsException(u"OFrames::getByIndex - Index out of bounds"_ustr, static_cast<OWeakObject *>(this) );
// Set default return value.
Any aReturnValue;
// Do the follow only, if owner instance valid. // Lock owner for follow operations - make a "hard reference"!
css::uno::Reference< XFrame > xOwner( m_xOwner.get(), UNO_QUERY ); if ( xOwner.is() )
{ // Get element form container. // (If index not valid, FrameContainer return NULL!)
aReturnValue <<= (*m_pFrameContainer)[nIndex];
}
// Return result of this operation. return aReturnValue;
}
// XElementAccess
Type SAL_CALL OFrames::getElementType()
{ // This "container" support XFrame-interfaces only! return cppu::UnoType<XFrame>::get();
}
// Set default return value. bool bHasElements = false; // Do the follow only, if owner instance valid. // Lock owner for follow operations - make a "hard reference"!
css::uno::Reference< XFrame > xOwner( m_xOwner.get(), UNO_QUERY ); if ( xOwner.is() )
{ // If some elements exist ... if ( m_pFrameContainer->getCount() > 0 )
{ // ... change this state value!
bHasElements = true;
}
} // Return result of this operation. return bHasElements;
}
// protected method
void OFrames::impl_resetObject()
{ // Attention: // Write this for multiple calls - NOT AT THE SAME TIME - but for more than one call again)! // It exist two ways to call this method. From destructor and from disposing(). // I can't say, which one is the first. Normally the disposing-call - but other way...
// This instance can't work if the weakreference to owner is invalid! // Destroy this to reset this object.
m_xOwner.clear(); // Reset pointer to shared container to!
m_pFrameContainer = nullptr;
}
void OFrames::impl_appendSequence( Sequence< css::uno::Reference< XFrame > >& seqDestination , const Sequence< css::uno::Reference< XFrame > >& seqSource )
{ // Get some information about the sequences.
sal_Int32 nSourceCount = seqSource.getLength();
sal_Int32 nDestinationCount = seqDestination.getLength(); const css::uno::Reference< XFrame >* pSourceAccess = seqSource.getConstArray();
css::uno::Reference< XFrame >* pDestinationAccess = seqDestination.getArray();
// Get memory for result list.
Sequence< css::uno::Reference< XFrame > > seqResult ( nSourceCount + nDestinationCount );
css::uno::Reference< XFrame >* pResultAccess = seqResult.getArray();
sal_Int32 nResultPosition = 0;
// Copy all items from first sequence. for ( sal_Int32 nSourcePosition=0; nSourcePosition<nSourceCount; ++nSourcePosition )
{
pResultAccess[nResultPosition] = pSourceAccess[nSourcePosition];
++nResultPosition;
}
// Don't manipulate nResultPosition between these two loops! // It's the current position in the result list.
// Copy all items from second sequence. for ( sal_Int32 nDestinationPosition=0; nDestinationPosition<nDestinationCount; ++nDestinationPosition )
{
pResultAccess[nResultPosition] = pDestinationAccess[nDestinationPosition];
++nResultPosition;
}
// Return result of this operation.
seqDestination.realloc( 0 );
seqDestination = std::move(seqResult);
}
// debug methods
/*----------------------------------------------------------------------------------------------------------------- The follow methods checks the parameter for other functions. If a parameter or his value is non valid, we return "sal_False". (else sal_True) This mechanism is used to throw an ASSERT!
ATTENTION
If you miss a test for one of this parameters, contact the author or add it himself !(?) But ... look for right testing! See using of this methods!
-----------------------------------------------------------------------------------------------------------------*/
// A search for frames must initiate with right flags. // Some one are superfluous and not supported yet. But here we control only the range of incoming parameter! bool OFrames::impldbg_checkParameter_queryFrames( sal_Int32 nSearchFlags )
{ // Set default return value. bool bOK = true; // Check parameter. if (
( nSearchFlags != FrameSearchFlag::AUTO ) &&
( !( nSearchFlags & FrameSearchFlag::PARENT ) ) &&
( !( nSearchFlags & FrameSearchFlag::SELF ) ) &&
( !( nSearchFlags & FrameSearchFlag::CHILDREN ) ) &&
( !( nSearchFlags & FrameSearchFlag::CREATE ) ) &&
( !( nSearchFlags & FrameSearchFlag::SIBLINGS ) ) &&
( !( nSearchFlags & FrameSearchFlag::TASKS ) ) &&
( !( nSearchFlags & FrameSearchFlag::ALL ) ) &&
( !( nSearchFlags & FrameSearchFlag::GLOBAL ) )
)
{
bOK = false;
} // Return result of check. return bOK;
}
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