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/* -*- 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/.
*/
#include <map>
#include <mutex>
#include <boost/shared_ptr.hpp>
#include <osl/thread.h>
#include <vcl/idle.hxx>
#include <LibreOfficeKit/LibreOfficeKit.h>
#include <LibreOfficeKit/LibreOfficeKitEnums.h>
#include <com/sun/star/frame/XStorable.hpp>
#include <com/sun/star/lang/XComponent.hpp>
#include "../../source/inc/desktopdllapi.h"
using namespace css;
using namespace boost;
class LOKInteractionHandler;
namespace desktop {
class CallbackFlushHandler : public Idle
{
public:
explicit CallbackFlushHandler(LibreOfficeKitCallback pCallback, void* pData)
: Idle( "lokit timer callback" ),
m_pCallback(pCallback),
m_pData(pData),
m_bPartTilePainting(false)
{
SetPriority(SchedulerPriority::POST_PAINT);
// Add the states that are safe to skip duplicates on,
// even when not consequent.
m_states.emplace(LOK_CALLBACK_TEXT_SELECTION_START, "NIL");
m_states.emplace(LOK_CALLBACK_TEXT_SELECTION_END, "NIL");
m_states.emplace(LOK_CALLBACK_TEXT_SELECTION, "NIL");
m_states.emplace(LOK_CALLBACK_GRAPHIC_SELECTION, "NIL");
m_states.emplace(LOK_CALLBACK_INVALIDATE_VISIBLE_CURSOR, "NIL");
m_states.emplace(LOK_CALLBACK_STATE_CHANGED, "NIL");
m_states.emplace(LOK_CALLBACK_MOUSE_POINTER, "NIL");
m_states.emplace(LOK_CALLBACK_CELL_CURSOR, "NIL");
m_states.emplace(LOK_CALLBACK_CELL_FORMULA, "NIL");
m_states.emplace(LOK_CALLBACK_CURSOR_VISIBLE, "NIL");
m_states.emplace(LOK_CALLBACK_SET_PART, "NIL");
Start();
}
virtual ~CallbackFlushHandler()
{
Stop();
// We might have important notification (.uno:save?).
flush();
}
virtual void Invoke() override
{
flush();
}
static
void callback(const int type, const char* payload, void* data)
{
CallbackFlushHandler* self = reinterpret_cast<CallbackFlushHandler*>(data);
if (self)
{
self->queue(type, payload);
}
}
void queue(const int type, const char* data)
{
if (m_bPartTilePainting)
{
// We drop notifications when this is set.
return;
}
const std::string payload(data ? data : "(nil)");
std::unique_lock<std::mutex> lock(m_mutex);
const auto stateIt = m_states.find(type);
if (stateIt != m_states.end())
{
// If the state didn't change, it's safe to ignore.
if (stateIt->second == payload)
{
return;
}
stateIt->second = payload;
}
if (type == LOK_CALLBACK_INVALIDATE_TILES &&
!m_queue.empty() && m_queue.back().first == type && m_queue.back().second == payload)
{
// Supress duplicate invalidation only when they are in sequence.
return;
}
if (type == LOK_CALLBACK_TEXT_SELECTION && payload.empty())
{
// Removing text selection invalidates the start and end as well.
m_states[LOK_CALLBACK_TEXT_SELECTION_START] = "";
m_states[LOK_CALLBACK_TEXT_SELECTION_END] = "";
}
m_queue.emplace_back(type, payload);
// These are safe to use the latest state and ignore previous
// ones (if any) since the last overrides previous ones.
switch (type)
{
case LOK_CALLBACK_TEXT_SELECTION_START:
case LOK_CALLBACK_TEXT_SELECTION_END:
case LOK_CALLBACK_TEXT_SELECTION:
case LOK_CALLBACK_GRAPHIC_SELECTION:
case LOK_CALLBACK_MOUSE_POINTER:
case LOK_CALLBACK_CELL_CURSOR:
case LOK_CALLBACK_CELL_FORMULA:
case LOK_CALLBACK_CURSOR_VISIBLE:
case LOK_CALLBACK_STATUS_INDICATOR_SET_VALUE:
removeAllButLast(type, false);
break;
// These come with rects, so drop earlier
// only when the latter includes former ones.
case LOK_CALLBACK_INVALIDATE_VISIBLE_CURSOR:
case LOK_CALLBACK_INVALIDATE_TILES:
if (payload.empty())
{
// Invalidating everything means previously
// invalidated tiles can be dropped.
removeAllButLast(type, false);
}
else
{
removeAllButLast(type, true);
}
break;
}
lock.unlock();
if (!IsActive())
{
Start();
}
}
void setPartTilePainting(const bool bPartPainting) { m_bPartTilePainting = bPartPainting; }
bool isPartTilePainting() const { return m_bPartTilePainting; }
private:
void flush()
{
if (m_pCallback)
{
std::unique_lock<std::mutex> lock(m_mutex);
for (auto& pair : m_queue)
{
m_pCallback(pair.first, pair.second.c_str(), m_pData);
}
m_queue.clear();
}
}
void removeAllButLast(const int type, const bool identical)
{
int i = m_queue.size() - 1;
std::string payload;
for (; i >= 0; --i)
{
if (m_queue[i].first == type)
{
payload = m_queue[i].second;
//SAL_WARN("idle", "Found [" + std::to_string(type) + "] at " + std::to_string(i) + ": [" + payload + "].");
break;
}
}
for (--i; i >= 0; --i)
{
if (m_queue[i].first == type &&
(!identical || m_queue[i].second == payload))
{
//SAL_WARN("idle", "Removing [" + std::to_string(type) + "] at " + std::to_string(i) + ": " + m_queue[i].second + "].");
m_queue.erase(m_queue.begin() + i);
}
}
}
private:
std::vector<std::pair<int, std::string>> m_queue;
std::map<int, std::string> m_states;
LibreOfficeKitCallback m_pCallback;
void *m_pData;
bool m_bPartTilePainting;
std::mutex m_mutex;
};
struct DESKTOP_DLLPUBLIC LibLODocument_Impl : public _LibreOfficeKitDocument
{
uno::Reference<css::lang::XComponent> mxComponent;
shared_ptr< LibreOfficeKitDocumentClass > m_pDocumentClass;
shared_ptr<CallbackFlushHandler> mpCallbackFlushHandler;
explicit LibLODocument_Impl(const uno::Reference <css::lang::XComponent> &xComponent);
~LibLODocument_Impl();
};
struct DESKTOP_DLLPUBLIC LibLibreOffice_Impl : public _LibreOfficeKit
{
OUString maLastExceptionMsg;
boost::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;
}
};
}
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