1 files changed, 268 insertions, 0 deletions
diff --git a/comphelper/source/container/enumhelper.cxx b/comphelper/source/container/enumhelper.cxx
new file mode 100644
index 000000000..6c05c89d3
--- /dev/null
+++ b/comphelper/source/container/enumhelper.cxx
@@ -0,0 +1,268 @@
+/* -*- 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 .
+ */
+
+#include <comphelper/enumhelper.hxx>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/container/XIndexAccess.hpp>
+#include <com/sun/star/container/XNameAccess.hpp>
+
+namespace comphelper
+{
+
+OEnumerationByName::OEnumerationByName(const css::uno::Reference<css::container::XNameAccess>& _rxAccess)
+    :m_aNames(_rxAccess->getElementNames())
+    ,m_nPos(0)
+    ,m_xAccess(_rxAccess)
+    ,m_bListening(false)
+{
+    impl_startDisposeListening();
+}
+
+
+OEnumerationByName::OEnumerationByName(const css::uno::Reference<css::container::XNameAccess>& _rxAccess,
+                                       const css::uno::Sequence< OUString >&           _aNames  )
+    :m_aNames(_aNames)
+    ,m_nPos(0)
+    ,m_xAccess(_rxAccess)
+    ,m_bListening(false)
+{
+    impl_startDisposeListening();
+}
+
+
+OEnumerationByName::~OEnumerationByName()
+{
+    impl_stopDisposeListening();
+}
+
+
+sal_Bool SAL_CALL OEnumerationByName::hasMoreElements(  )
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    if (m_xAccess.is() && m_aNames.getLength() > m_nPos)
+        return true;
+
+    if (m_xAccess.is())
+    {
+        impl_stopDisposeListening();
+        m_xAccess.clear();
+    }
+
+    return false;
+}
+
+
+css::uno::Any SAL_CALL OEnumerationByName::nextElement(  )
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    css::uno::Any aRes;
+    if (m_xAccess.is() && m_nPos < m_aNames.getLength())
+        aRes = m_xAccess->getByName(m_aNames.getConstArray()[m_nPos++]);
+
+    if (m_xAccess.is() && m_nPos >= m_aNames.getLength())
+    {
+        impl_stopDisposeListening();
+        m_xAccess.clear();
+    }
+
+    if (!aRes.hasValue())       //There are no more elements
+        throw css::container::NoSuchElementException();
+
+    return aRes;
+}
+
+
+void SAL_CALL OEnumerationByName::disposing(const css::lang::EventObject& aEvent)
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    if (aEvent.Source == m_xAccess)
+        m_xAccess.clear();
+}
+
+
+void OEnumerationByName::impl_startDisposeListening()
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    if (m_bListening)
+        return;
+
+    osl_atomic_increment(&m_refCount);
+    css::uno::Reference< css::lang::XComponent > xDisposable(m_xAccess, css::uno::UNO_QUERY);
+    if (xDisposable.is())
+    {
+        xDisposable->addEventListener(this);
+        m_bListening = true;
+    }
+    osl_atomic_decrement(&m_refCount);
+}
+
+
+void OEnumerationByName::impl_stopDisposeListening()
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    if (!m_bListening)
+        return;
+
+    osl_atomic_increment(&m_refCount);
+    css::uno::Reference< css::lang::XComponent > xDisposable(m_xAccess, css::uno::UNO_QUERY);
+    if (xDisposable.is())
+    {
+        xDisposable->removeEventListener(this);
+        m_bListening = false;
+    }
+    osl_atomic_decrement(&m_refCount);
+}
+
+OEnumerationByIndex::OEnumerationByIndex(const css::uno::Reference< css::container::XIndexAccess >& _rxAccess)
+    :m_xAccess(_rxAccess)
+    ,m_nPos(0)
+    ,m_bListening(false)
+{
+    impl_startDisposeListening();
+}
+
+
+OEnumerationByIndex::~OEnumerationByIndex()
+{
+    impl_stopDisposeListening();
+}
+
+
+sal_Bool SAL_CALL OEnumerationByIndex::hasMoreElements(  )
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    if (m_xAccess.is() && m_xAccess->getCount() > m_nPos)
+        return true;
+
+    if (m_xAccess.is())
+    {
+        impl_stopDisposeListening();
+        m_xAccess.clear();
+    }
+
+    return false;
+}
+
+
+css::uno::Any SAL_CALL OEnumerationByIndex::nextElement(  )
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    css::uno::Any aRes;
+    if (m_xAccess.is() && m_nPos < m_xAccess->getCount())
+        aRes = m_xAccess->getByIndex(m_nPos++);
+
+    if (m_xAccess.is() && m_nPos >= m_xAccess->getCount())
+    {
+        impl_stopDisposeListening();
+        m_xAccess.clear();
+    }
+
+    if (!aRes.hasValue())
+        throw css::container::NoSuchElementException();
+    return aRes;
+}
+
+
+void SAL_CALL OEnumerationByIndex::disposing(const css::lang::EventObject& aEvent)
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    if (aEvent.Source == m_xAccess)
+        m_xAccess.clear();
+}
+
+
+void OEnumerationByIndex::impl_startDisposeListening()
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    if (m_bListening)
+        return;
+
+    osl_atomic_increment(&m_refCount);
+    css::uno::Reference< css::lang::XComponent > xDisposable(m_xAccess, css::uno::UNO_QUERY);
+    if (xDisposable.is())
+    {
+        xDisposable->addEventListener(this);
+        m_bListening = true;
+    }
+    osl_atomic_decrement(&m_refCount);
+}
+
+
+void OEnumerationByIndex::impl_stopDisposeListening()
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    if (!m_bListening)
+        return;
+
+    osl_atomic_increment(&m_refCount);
+    css::uno::Reference< css::lang::XComponent > xDisposable(m_xAccess, css::uno::UNO_QUERY);
+    if (xDisposable.is())
+    {
+        xDisposable->removeEventListener(this);
+        m_bListening = false;
+    }
+    osl_atomic_decrement(&m_refCount);
+}
+
+OAnyEnumeration::OAnyEnumeration(const css::uno::Sequence< css::uno::Any >& lItems)
+    :m_nPos(0)
+    ,m_lItems(lItems)
+{
+}
+
+
+OAnyEnumeration::~OAnyEnumeration()
+{
+}
+
+
+sal_Bool SAL_CALL OAnyEnumeration::hasMoreElements(  )
+{
+    osl::MutexGuard aLock(m_aLock);
+
+    return (m_lItems.getLength() > m_nPos);
+}
+
+
+css::uno::Any SAL_CALL OAnyEnumeration::nextElement(  )
+{
+    if ( ! hasMoreElements())
+        throw css::container::NoSuchElementException();
+
+    osl::MutexGuard aLock(m_aLock);
+    sal_Int32 nPos = m_nPos;
+    ++m_nPos;
+    return m_lItems[nPos];
+}
+
+
+}   // namespace comphelper
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */