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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/.
*
* 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 <vcl/timer.hxx>
#include <IGrammarContact.hxx>
#include <pam.hxx>
#include <ndtxt.hxx>
#include <SwGrammarMarkUp.hxx>
#include <txtfrm.hxx>
#include <svl/listener.hxx>
namespace {
/*
* This class is responsible for the delayed display of grammar checks when a paragraph is edited
* It's a client of the paragraph the cursor points to.
* If the cursor position changes, updateCursorPosition has to be called
* If the grammar checker wants to set a grammar marker at a paragraph, he has to request
* the grammar list from this class. If the requested paragraph is not edited, it returns
* the normal grammar list. But if the paragraph is the active one, a proxy list will be returned and
* all changes are set in this proxy list. If the cursor leaves the paragraph the proxy list
* will replace the old list. If the grammar checker has completed the paragraph ('setChecked')
* then a timer is setup which replaces the old list as well.
*/
class SwGrammarContact final : public IGrammarContact, public SvtListener
{
Timer m_aTimer;
std::unique_ptr<SwGrammarMarkUp> m_pProxyList;
bool m_isFinished;
SwTextNode* m_pTextNode;
DECL_LINK( TimerRepaint, Timer *, void );
public:
SwGrammarContact();
virtual ~SwGrammarContact() override { m_aTimer.Stop(); }
// (pure) virtual functions of IGrammarContact
virtual void updateCursorPosition( const SwPosition& rNewPos ) override;
virtual SwGrammarMarkUp* getGrammarCheck( SwTextNode& rTextNode, bool bCreate ) override;
virtual void finishGrammarCheck( SwTextNode& rTextNode ) override;
void CheckBroadcaster()
{
if(HasBroadcaster())
return;
m_pTextNode = nullptr;
m_pProxyList.reset();
}
};
}
SwGrammarContact::SwGrammarContact() : m_isFinished( false ), m_pTextNode(nullptr)
{
m_aTimer.SetTimeout( 2000 ); // Repaint of grammar check after 'setChecked'
m_aTimer.SetInvokeHandler( LINK(this, SwGrammarContact, TimerRepaint) );
m_aTimer.SetDebugName( "sw::SwGrammarContact TimerRepaint" );
}
IMPL_LINK( SwGrammarContact, TimerRepaint, Timer *, pTimer, void )
{
CheckBroadcaster();
if( pTimer )
{
pTimer->Stop();
if( m_pTextNode )
{ //Replace the old wrong list by the proxy list and repaint all frames
m_pTextNode->SetGrammarCheck( m_pProxyList.release() );
SwTextFrame::repaintTextFrames( *m_pTextNode );
}
}
}
/* I'm always a client of the current paragraph */
void SwGrammarContact::updateCursorPosition( const SwPosition& rNewPos )
{
CheckBroadcaster();
SwTextNode* pTextNode = rNewPos.nNode.GetNode().GetTextNode();
if( pTextNode == m_pTextNode ) // paragraph has been changed
return;
m_aTimer.Stop();
if( m_pTextNode ) // My last paragraph has been left
{
if( m_pProxyList )
{ // replace old list by the proxy list and repaint
m_pTextNode->SetGrammarCheck( m_pProxyList.release() );
SwTextFrame::repaintTextFrames( *m_pTextNode );
}
EndListeningAll();
}
if( pTextNode )
{
m_pTextNode = pTextNode;
EndListeningAll();
StartListening(pTextNode->GetNotifier()); // welcome new paragraph
}
}
/* deliver a grammar check list for the given text node */
SwGrammarMarkUp* SwGrammarContact::getGrammarCheck( SwTextNode& rTextNode, bool bCreate )
{
SwGrammarMarkUp *pRet = nullptr;
CheckBroadcaster();
if( m_pTextNode == &rTextNode ) // hey, that's my current paragraph!
{ // so you will get a proxy list...
if( bCreate )
{
if( m_isFinished )
{
m_pProxyList.reset();
}
if( !m_pProxyList )
{
if( rTextNode.GetGrammarCheck() )
m_pProxyList.reset( static_cast<SwGrammarMarkUp*>(rTextNode.GetGrammarCheck()->Clone()) );
else
{
m_pProxyList.reset( new SwGrammarMarkUp() );
m_pProxyList->SetInvalid( 0, COMPLETE_STRING );
}
}
m_isFinished = false;
}
pRet = m_pProxyList.get();
}
else
{
pRet = rTextNode.GetGrammarCheck(); // do you have already a list?
if( bCreate && !pRet ) // do you want to create a list?
{
pRet = new SwGrammarMarkUp();
pRet->SetInvalid( 0, COMPLETE_STRING );
rTextNode.SetGrammarCheck( pRet );
rTextNode.SetGrammarCheckDirty( true );
}
}
return pRet;
}
void SwGrammarContact::finishGrammarCheck( SwTextNode& rTextNode )
{
CheckBroadcaster();
if( &rTextNode != m_pTextNode ) // not my paragraph
SwTextFrame::repaintTextFrames( rTextNode ); // can be repainted directly
else
{
if( m_pProxyList )
{
m_isFinished = true;
m_aTimer.Start(); // will replace old list and repaint with delay
}
else if( m_pTextNode->GetGrammarCheck() )
{ // all grammar problems seems to be gone, no delay needed
m_pTextNode->SetGrammarCheck( nullptr );
SwTextFrame::repaintTextFrames( *m_pTextNode );
}
}
}
IGrammarContact* createGrammarContact()
{
return new SwGrammarContact();
}
void finishGrammarCheck( SwTextNode& rTextNode )
{
IGrammarContact* pGrammarContact = getGrammarContact( rTextNode );
if( pGrammarContact )
pGrammarContact->finishGrammarCheck( rTextNode );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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