/* -*- 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 .
*/
OComponentEnumeration::OComponentEnumeration( std::vector< css::uno::Reference< XComponent > >&& seqComponents )
: m_nPosition ( 0 ) // 0 is the first position for a valid list and the right value for an invalid list to!
, m_seqComponents ( std::move(seqComponents) )
{}
// Safe impossible cases // This method is not specified for all incoming parameters.
SAL_WARN_IF( !aEvent.Source.is(), "fwk", "OComponentEnumeration::disposing(): Invalid parameter detected!" );
// Reset instance to defaults, release references and free memory.
impl_resetObject();
}
// First position in a valid list is 0. // => The last one is getLength() - 1! // m_nPosition's current value is the position for the next element, which will be return, if user call "nextElement()" // => We have more elements if current position less than the length of the list! return ( m_nPosition < static_cast<sal_uInt32>(m_seqComponents.size()) );
}
// XEnumeration
Any SAL_CALL OComponentEnumeration::nextElement()
{
SolarMutexGuard g;
// If we have no elements or end of enumeration is arrived ... if ( !hasMoreElements() )
{ // .. throw an exception! throw NoSuchElementException();
}
// Else; Get next element from list ...
Any aComponent;
aComponent <<= m_seqComponents[m_nPosition]; // ... and step to next element!
++m_nPosition;
// Return listitem. return aComponent;
}
// protected method
void OComponentEnumeration::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...
// Delete list of components.
m_seqComponents.clear(); // Reset position in list. // The list has no elements anymore. m_nPosition is normally the current position in list for nextElement! // But a position of 0 in a list of 0 items is an invalid state. This constellation can't work in future. // End of enumeration is arrived! // (see hasMoreElements() for more details...)
m_nPosition = 0;
}
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.