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, 276 insertions, 0 deletions

diff --git a/desktop/inc/lib/init.hxx b/desktop/inc/lib/init.hxx
new file mode 100644
index 000000000..c5dcea03d
--- /dev/null
+++ b/desktop/inc/lib/init.hxx
@@ -0,0 +1,276 @@
+/* -*- 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/.
+ */
+
+#pragma once
+
+#include <map>
+#include <unordered_map>
+#include <memory>
+#include <mutex>
+#include <string_view>
+
+#include <boost/property_tree/ptree.hpp>
+#include <boost/variant.hpp>
+#include <boost/container/flat_map.hpp>
+
+#include <osl/thread.h>
+#include <rtl/ref.hxx>
+#include <vcl/idle.hxx>
+#include <LibreOfficeKit/LibreOfficeKit.h>
+#include <LibreOfficeKit/LibreOfficeKitEnums.h>
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <tools/gen.hxx>
+#include <sfx2/lokcallback.hxx>
+#include <sfx2/lokhelper.hxx>
+
+#include <desktop/dllapi.h>
+
+class LOKInteractionHandler;
+
+namespace desktop {
+
+    /// Represents an invalidated rectangle inside a given document part.
+    struct RectangleAndPart
+    {
+        tools::Rectangle m_aRectangle;
+        int m_nPart;
+
+        // This is the "EMPTY" rectangle, which somewhat confusingly actually means
+        // to drop all rectangles (see LOK_CALLBACK_INVALIDATE_TILES documentation),
+        // and so it is actually an infinite rectangle and not an empty one.
+        constexpr static tools::Rectangle emptyAllRectangle = {0, 0, SfxLokHelper::MaxTwips, SfxLokHelper::MaxTwips};
+
+        RectangleAndPart()
+            : m_nPart(INT_MIN)  // -1 is reserved to mean "all parts".
+        {
+        }
+
+        RectangleAndPart(const tools::Rectangle* pRect, int nPart)
+            : m_aRectangle( pRect ? SanitizedRectangle(*pRect) : emptyAllRectangle)
+            , m_nPart(nPart)
+        {
+        }
+
+        OString toString() const
+        {
+            if (m_nPart >= -1)
+                return (isInfinite() ? "EMPTY" : m_aRectangle.toString())
+                    + ", " + OString::number(m_nPart);
+            else
+                return (isInfinite() ? "EMPTY" : m_aRectangle.toString());
+        }
+
+        /// Infinite Rectangle is both sides are
+        /// equal or longer than SfxLokHelper::MaxTwips.
+        bool isInfinite() const
+        {
+            return m_aRectangle.GetWidth() >= SfxLokHelper::MaxTwips &&
+                   m_aRectangle.GetHeight() >= SfxLokHelper::MaxTwips;
+        }
+
+        /// Empty Rectangle is when it has zero dimensions.
+        bool isEmpty() const
+        {
+            return m_aRectangle.IsEmpty();
+        }
+
+        static RectangleAndPart Create(const std::string& rPayload);
+        /// Makes sure a rectangle is valid (apparently some code does not like negative coordinates for example).
+        static tools::Rectangle SanitizedRectangle(tools::Long nLeft, tools::Long nTop, tools::Long nWidth, tools::Long nHeight);
+        static tools::Rectangle SanitizedRectangle(const tools::Rectangle& rect);
+    };
+
+    /// One instance of this per view, handles flushing callbacks
+    class DESKTOP_DLLPUBLIC CallbackFlushHandler final : public Idle, public SfxLokCallbackInterface
+    {
+    public:
+        explicit CallbackFlushHandler(LibreOfficeKitDocument* pDocument, LibreOfficeKitCallback pCallback, void* pData);
+        virtual ~CallbackFlushHandler() override;
+        virtual void Invoke() override;
+        // TODO This should be dropped and the binary libreOfficeKitViewCallback() variants should be called?
+        void queue(const int type, const char* data);
+
+        /// Disables callbacks on this handler. Must match with identical count
+        /// of enableCallbacks. Used during painting and changing views.
+        void disableCallbacks() { ++m_nDisableCallbacks; }
+        /// Enables callbacks on this handler. Must match with identical count
+        /// of disableCallbacks. Used during painting and changing views.
+        void enableCallbacks() { --m_nDisableCallbacks; }
+        /// Returns true iff callbacks are disabled.
+        bool callbacksDisabled() const { return m_nDisableCallbacks != 0; }
+
+        void addViewStates(int viewId);
+        void removeViewStates(int viewId);
+
+        void setViewId( int viewId ) { m_viewId = viewId; }
+
+        // SfxLockCallbackInterface
+        virtual void libreOfficeKitViewCallback(int nType, const char* pPayload) override;
+        virtual void libreOfficeKitViewCallbackWithViewId(int nType, const char* pPayload, int nViewId) override;
+        virtual void libreOfficeKitViewInvalidateTilesCallback(const tools::Rectangle* pRect, int nPart) override;
+        virtual void libreOfficeKitViewUpdatedCallback(int nType) override;
+        virtual void libreOfficeKitViewUpdatedCallbackPerViewId(int nType, int nViewId, int nSourceViewId) override;
+
+    private:
+        struct CallbackData
+        {
+            CallbackData(const char* payload)
+                : PayloadString(payload ? payload : "(nil)")
+            {
+            }
+
+            CallbackData(const char* payload, int viewId)
+                : PayloadString(payload ? payload : "(nil)")
+                , PayloadObject(viewId)
+            {
+            }
+
+            CallbackData(const tools::Rectangle* pRect, int viewId)
+                : PayloadObject(RectangleAndPart(pRect, viewId))
+            { // PayloadString will be done on demand
+            }
+
+            const std::string& getPayload() const;
+            /// Update a RectangleAndPart object and update PayloadString if necessary.
+            void updateRectangleAndPart(const RectangleAndPart& rRectAndPart);
+            /// Return the parsed RectangleAndPart instance.
+            const RectangleAndPart& getRectangleAndPart() const;
+            /// Parse and set the JSON object and return it. Clobbers PayloadString.
+            boost::property_tree::ptree& setJson(const std::string& payload);
+            /// Set a Json object and update PayloadString.
+            void setJson(const boost::property_tree::ptree& rTree);
+            /// Return the parsed JSON instance.
+            const boost::property_tree::ptree& getJson() const;
+
+            int getViewId() const;
+
+            bool isEmpty() const
+            {
+                return PayloadString.empty() && PayloadObject.which() == 0;
+            }
+            void clear()
+            {
+                PayloadString.clear();
+                PayloadObject = boost::blank();
+            }
+
+            /// Validate that the payload and parsed object match.
+            bool validate() const;
+
+            /// Returns true iff there is cached data.
+            bool isCached() const { return PayloadObject.which() != 0; }
+
+        private:
+            mutable std::string PayloadString;
+
+            /// The parsed payload cache. Update validate() when changing this.
+            mutable boost::variant<boost::blank, RectangleAndPart, boost::property_tree::ptree, int> PayloadObject;
+        };
+
+        typedef std::vector<int> queue_type1;
+        typedef std::vector<CallbackData> queue_type2;
+
+        void startTimer();
+        bool removeAll(int type);
+        bool removeAll(int type, const std::function<bool (const CallbackData&)>& rTestFunc);
+        bool processInvalidateTilesEvent(int type, CallbackData& aCallbackData);
+        bool processWindowEvent(int type, CallbackData& aCallbackData);
+        queue_type2::iterator toQueue2(queue_type1::iterator);
+        queue_type2::reverse_iterator toQueue2(queue_type1::reverse_iterator);
+        void queue(const int type, CallbackData& data);
+        void enqueueUpdatedTypes();
+        void enqueueUpdatedType( int type, const SfxViewShell* sourceViewShell, int viewId );
+
+        /** we frequently want to scan the queue, and mostly when we do so, we only care about the element type
+            so we split the queue in 2 to make the scanning cache friendly. */
+        queue_type1 m_queue1;
+        queue_type2 m_queue2;
+        std::map<int, std::string> m_states;
+        std::unordered_map<std::string, std::string> m_lastStateChange;
+        std::unordered_map<int, std::unordered_map<int, std::string>> m_viewStates;
+
+        // For some types only the last message matters (see isUpdatedType()) or only the last message
+        // per each viewId value matters (see isUpdatedTypePerViewId()), so instead of using push model
+        // where we'd get flooded by repeated messages (which might be costly to generate and process),
+        // the preferred way is that libreOfficeKitViewUpdatedCallback()
+        // or libreOfficeKitViewUpdatedCallbackPerViewId() get called to notify about such a message being
+        // needed, and we'll set a flag here to fetch the actual message before flushing.
+        void setUpdatedType( int nType, bool value );
+        void setUpdatedTypePerViewId( int nType, int nViewId, int nSourceViewId, bool value );
+        void resetUpdatedType( int nType);
+        void resetUpdatedTypePerViewId( int nType, int nViewId );
+        std::vector<bool> m_updatedTypes; // index is type, value is if set
+        struct PerViewIdData
+        {
+            bool set = false; // value is if set
+            int sourceViewId;
+        };
+        // Flat_map is used in preference to unordered_map because the map is accessed very often.
+        boost::container::flat_map<int, std::vector<PerViewIdData>> m_updatedTypesPerViewId; // key is view, index is type
+
+        LibreOfficeKitDocument* m_pDocument;
+        int m_viewId = -1; // view id of the associated SfxViewShell
+        LibreOfficeKitCallback m_pCallback;
+        void *m_pData;
+        int m_nDisableCallbacks;
+        std::recursive_mutex m_mutex;
+        class TimeoutIdle : public Timer
+        {
+        public:
+            TimeoutIdle( CallbackFlushHandler* handler );
+            virtual void Invoke() override;
+        private:
+            CallbackFlushHandler* mHandler;
+        };
+        TimeoutIdle m_TimeoutIdle;
+    };
+
+    struct DESKTOP_DLLPUBLIC LibLODocument_Impl : public _LibreOfficeKitDocument
+    {
+        css::uno::Reference<css::lang::XComponent> mxComponent;
+        std::shared_ptr< LibreOfficeKitDocumentClass > m_pDocumentClass;
+        std::map<size_t, std::shared_ptr<CallbackFlushHandler>> mpCallbackFlushHandlers;
+        const int mnDocumentId;
+
+        explicit LibLODocument_Impl(css::uno::Reference<css::lang::XComponent> xComponent,
+                                    int nDocumentId);
+        ~LibLODocument_Impl();
+    };
+
+    struct DESKTOP_DLLPUBLIC LibLibreOffice_Impl : public _LibreOfficeKit
+    {
+        OUString maLastExceptionMsg;
+        std::shared_ptr< LibreOfficeKitClass > m_pOfficeClass;
+        oslThread maThread;
+        LibreOfficeKitCallback mpCallback;
+        void *mpCallbackData;
+        int64_t mOptionalFeatures;
+        std::map<OString, rtl::Reference<LOKInteractionHandler>> mInteractionMap;
+
+        LibLibreOffice_Impl();
+        ~LibLibreOffice_Impl();
+
+        bool hasOptionalFeature(LibreOfficeKitOptionalFeatures const feature)
+        {
+            return (mOptionalFeatures & feature) != 0;
+        }
+    };
+
+    /// Helper function to extract the value from parameters delimited by
+    /// comma, like: Name1=Value1,Name2=Value2,Name3=Value3.
+    /// @param rOptions When extracted, the Param=Value is removed from it.
+    DESKTOP_DLLPUBLIC OUString extractParameter(OUString& aOptions, std::u16string_view rName);
+
+    /// Helper function to convert JSON to a vector of PropertyValues.
+    /// Public to be unit-test-able.
+    DESKTOP_DLLPUBLIC std::vector<com::sun::star::beans::PropertyValue> jsonToPropertyValuesVector(const char* pJSON);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */