Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 191 insertions, 0 deletions

diff --git a/unoxml/source/dom/elementlist.cxx b/unoxml/source/dom/elementlist.cxx
new file mode 100644
index 000000000..c8fc60437
--- /dev/null
+++ b/unoxml/source/dom/elementlist.cxx
@@ -0,0 +1,191 @@
+/* -*- 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 "elementlist.hxx"
+
+#include <string.h>
+#include <string_view>
+
+#include <cppuhelper/implbase.hxx>
+#include <o3tl/safeint.hxx>
+#include <tools/diagnose_ex.h>
+
+#include "element.hxx"
+#include "document.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+
+namespace
+{
+    class WeakEventListener : public ::cppu::WeakImplHelper<css::xml::dom::events::XEventListener>
+    {
+    private:
+        css::uno::WeakReference<css::xml::dom::events::XEventListener> mxOwner;
+
+    public:
+        explicit WeakEventListener(const css::uno::Reference<css::xml::dom::events::XEventListener>& rOwner)
+            : mxOwner(rOwner)
+        {
+        }
+
+        virtual void SAL_CALL handleEvent(const css::uno::Reference<css::xml::dom::events::XEvent>& rEvent) override
+        {
+            css::uno::Reference<css::xml::dom::events::XEventListener> xOwner(mxOwner.get(),
+                css::uno::UNO_QUERY);
+            if (xOwner.is())
+                xOwner->handleEvent(rEvent);
+        }
+    };
+}
+
+namespace DOM
+{
+
+    static xmlChar* lcl_initXmlString(std::u16string_view rString)
+    {
+        OString const os =
+            OUStringToOString(rString, RTL_TEXTENCODING_UTF8);
+        xmlChar *const pRet = new xmlChar[os.getLength() + 1];
+        strcpy(reinterpret_cast<char*>(pRet), os.getStr());
+        return pRet;
+    }
+
+    CElementList::CElementList(::rtl::Reference<CElement> const& pElement,
+            ::osl::Mutex & rMutex,
+            std::u16string_view rName, OUString const*const pURI)
+        : m_xImpl(new CElementListImpl(pElement, rMutex, rName, pURI))
+    {
+        if (pElement.is()) {
+            m_xImpl->registerListener(*pElement);
+        }
+    }
+
+    CElementListImpl::CElementListImpl(::rtl::Reference<CElement> const& pElement,
+            ::osl::Mutex & rMutex,
+            std::u16string_view rName, OUString const*const pURI)
+        : m_pElement(pElement)
+        , m_rMutex(rMutex)
+        , m_pName(lcl_initXmlString(rName))
+        , m_pURI(pURI ? lcl_initXmlString(*pURI) : nullptr)
+        , m_bRebuild(true)
+    {
+    }
+
+    CElementListImpl::~CElementListImpl()
+    {
+        if (m_xEventListener.is() && m_pElement.is())
+        {
+            Reference< XEventTarget > xTarget = m_pElement;
+            assert(xTarget.is());
+            if (!xTarget.is())
+                return;
+            xTarget->removeEventListener("DOMSubtreeModified", m_xEventListener, false/*capture*/);
+        }
+    }
+
+    void CElementListImpl::registerListener(CElement & rElement)
+    {
+        try {
+            Reference< XEventTarget > const xTarget(
+                    static_cast<XElement*>(& rElement), UNO_QUERY_THROW);
+            m_xEventListener = new WeakEventListener(this);
+            xTarget->addEventListener("DOMSubtreeModified", m_xEventListener, false/*capture*/);
+        } catch (const Exception &){
+            TOOLS_WARN_EXCEPTION( "unoxml", "Exception caught while registering NodeList as listener");
+        }
+    }
+
+    void CElementListImpl::buildlist(xmlNodePtr pNode, bool start)
+    {
+        // bail out if no rebuild is needed
+        if (start) {
+            if (!m_bRebuild)
+            {
+                return;
+            } else {
+                m_nodevector.clear();
+                m_bRebuild = false; // don't rebuild until tree is mutated
+            }
+        }
+
+        while (pNode != nullptr )
+        {
+            if (pNode->type == XML_ELEMENT_NODE &&
+                (strcmp(reinterpret_cast<char const *>(pNode->name), reinterpret_cast<char*>(m_pName.get())) == 0))
+            {
+                if (!m_pURI) {
+                    m_nodevector.push_back(pNode);
+                } else {
+                    if (pNode->ns != nullptr && (0 ==
+                         strcmp(reinterpret_cast<char const *>(pNode->ns->href), reinterpret_cast<char*>(m_pURI.get()))))
+                    {
+                        m_nodevector.push_back(pNode);
+                    }
+                }
+            }
+            if (pNode->children != nullptr) buildlist(pNode->children, false);
+
+            if (!start) pNode = pNode->next;
+            else break; // fold back
+        }
+    }
+
+    /**
+    The number of nodes in the list.
+    */
+    sal_Int32 SAL_CALL CElementListImpl::getLength()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (!m_pElement.is()) { return 0; }
+
+        // this has to be 'live'
+        buildlist(m_pElement->GetNodePtr());
+        return m_nodevector.size();
+    }
+    /**
+    Returns the indexth item in the collection.
+    */
+    Reference< XNode > SAL_CALL CElementListImpl::item(sal_Int32 index)
+    {
+        if (index < 0) throw RuntimeException();
+
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (!m_pElement.is()) { return nullptr; }
+
+        buildlist(m_pElement->GetNodePtr());
+        if (m_nodevector.size() <= o3tl::make_unsigned(index)) {
+            throw RuntimeException();
+        }
+        return m_pElement->GetOwnerDocument().GetCNode(m_nodevector[index]);
+    }
+
+    // tree mutations can change the list
+    void SAL_CALL CElementListImpl::handleEvent(Reference< XEvent > const&)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        m_bRebuild = true;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */