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 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sc.hxx"
#include "AccessibleEditObject.hxx"
#include "scitems.hxx"
#include <editeng/eeitem.hxx>
#include "unoguard.hxx"
#include "AccessibleText.hxx"
#include "editsrc.hxx"
#include "scmod.hxx"
#include "inputhdl.hxx"

#ifndef _UTL_ACCESSIBLESTATESETHELPER_HXX
#include <unotools/accessiblestatesethelper.hxx>
#endif
#ifndef _COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLEROLE_HPP_
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#endif
#ifndef _COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLESTATETYPE_HPP_
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#endif
#include <rtl/uuid.h>
#include <tools/debug.hxx>
#include <svx/AccessibleTextHelper.hxx>
#include <editeng/editview.hxx>
#include <editeng/editeng.hxx>
#include <svx/svdmodel.hxx>

using namespace	::com::sun::star;
using namespace	::com::sun::star::accessibility;

//=====  internal  ============================================================

ScAccessibleEditObject::ScAccessibleEditObject(
        const uno::Reference<XAccessible>& rxParent,
        EditView* pEditView, Window* pWin, const rtl::OUString& rName,
        const rtl::OUString& rDescription, EditObjectType eObjectType)
	:
    ScAccessibleContextBase(rxParent, AccessibleRole::TEXT_FRAME),
	mpTextHelper(NULL),
    mpEditView(pEditView),
    mpWindow(pWin),
    meObjectType(eObjectType),
    mbHasFocus(sal_False)
{
    CreateTextHelper();
    SetName(rName);
    SetDescription(rDescription);
}

ScAccessibleEditObject::~ScAccessibleEditObject()
{
	if (!ScAccessibleContextBase::IsDefunc() && !rBHelper.bInDispose)
	{
		// increment refcount to prevent double call off dtor
		osl_incrementInterlockedCount( &m_refCount );
		// call dispose to inform object wich have a weak reference to this object
		dispose();
	}
}

void SAL_CALL ScAccessibleEditObject::disposing()
{
    ScUnoGuard aGuard;
	if (mpTextHelper)
		DELETEZ(mpTextHelper);

	ScAccessibleContextBase::disposing();
}

void ScAccessibleEditObject::LostFocus()
{
    mbHasFocus = sal_False;
    if (mpTextHelper)
        mpTextHelper->SetFocus(sal_False);
    CommitFocusLost();
}

void ScAccessibleEditObject::GotFocus()
{
    mbHasFocus = sal_True;
    CommitFocusGained();
    if (mpTextHelper)
        mpTextHelper->SetFocus(sal_True);
}

	//=====  XAccessibleComponent  ============================================

uno::Reference< XAccessible > SAL_CALL ScAccessibleEditObject::getAccessibleAtPoint(
		const awt::Point& rPoint )
		throw (uno::RuntimeException)
{
    uno::Reference<XAccessible> xRet;
    if (containsPoint(rPoint))
    {
 	    ScUnoGuard aGuard;
        IsObjectValid();

    	if(!mpTextHelper)
	    	CreateTextHelper();

        xRet = mpTextHelper->GetAt(rPoint);
    }

    return xRet;
}

Rectangle ScAccessibleEditObject::GetBoundingBoxOnScreen(void) const
		throw (uno::RuntimeException)
{
    Rectangle aScreenBounds;

    if ( mpWindow )
    {
        if ( meObjectType == CellInEditMode )
        {
            if ( mpEditView && mpEditView->GetEditEngine() )
            {
                MapMode aMapMode( mpEditView->GetEditEngine()->GetRefMapMode() );
                aScreenBounds = mpWindow->LogicToPixel( mpEditView->GetOutputArea(), aMapMode );
                Point aCellLoc = aScreenBounds.TopLeft();
                Rectangle aWindowRect = mpWindow->GetWindowExtentsRelative( NULL );
                Point aWindowLoc = aWindowRect.TopLeft();
                Point aPos( aCellLoc.getX() + aWindowLoc.getX(), aCellLoc.getY() + aWindowLoc.getY() );
                aScreenBounds.SetPos( aPos );
            }
        }
        else
        {
            aScreenBounds = mpWindow->GetWindowExtentsRelative( NULL );
        }
    }

	return aScreenBounds;
}

Rectangle ScAccessibleEditObject::GetBoundingBox(void) const
		throw (uno::RuntimeException)
{
    Rectangle aBounds( GetBoundingBoxOnScreen() );

    if ( mpWindow )
    {
        uno::Reference< XAccessible > xThis( mpWindow->GetAccessible() );
        if ( xThis.is() )
        {
            uno::Reference< XAccessibleContext > xContext( xThis->getAccessibleContext() );
            if ( xContext.is() )
            {
                uno::Reference< XAccessible > xParent( xContext->getAccessibleParent() );
                if ( xParent.is() )
                {
                    uno::Reference< XAccessibleComponent > xParentComponent( xParent->getAccessibleContext(), uno::UNO_QUERY );				
		            if ( xParentComponent.is() )
		            {
                        Point aScreenLoc = aBounds.TopLeft();
			            awt::Point aParentScreenLoc = xParentComponent->getLocationOnScreen();
                        Point aPos( aScreenLoc.getX() - aParentScreenLoc.X, aScreenLoc.getY() - aParentScreenLoc.Y );
			            aBounds.SetPos( aPos );
		            }
                }
            }
        }
    }

	return aBounds;
}

	//=====  XAccessibleContext  ==============================================

sal_Int32 SAL_CALL
	ScAccessibleEditObject::getAccessibleChildCount(void)
    				throw (uno::RuntimeException)
{
	ScUnoGuard aGuard;
    IsObjectValid();
	if (!mpTextHelper)
		CreateTextHelper();
	return mpTextHelper->GetChildCount();
}

uno::Reference< XAccessible > SAL_CALL
	ScAccessibleEditObject::getAccessibleChild(sal_Int32 nIndex)
        throw (uno::RuntimeException,
		lang::IndexOutOfBoundsException)
{
	ScUnoGuard aGuard;
    IsObjectValid();
	if (!mpTextHelper)
		CreateTextHelper();
	return mpTextHelper->GetChild(nIndex);
}

uno::Reference<XAccessibleStateSet> SAL_CALL
	ScAccessibleEditObject::getAccessibleStateSet(void)
    throw (uno::RuntimeException)
{
	ScUnoGuard aGuard;
	uno::Reference<XAccessibleStateSet> xParentStates;
	if (getAccessibleParent().is())
	{
		uno::Reference<XAccessibleContext> xParentContext = getAccessibleParent()->getAccessibleContext();
		xParentStates = xParentContext->getAccessibleStateSet();
	}
	utl::AccessibleStateSetHelper* pStateSet = new utl::AccessibleStateSetHelper();
	if (IsDefunc(xParentStates))
		pStateSet->AddState(AccessibleStateType::DEFUNC);
    else
    {
        // all states are const, because this object exists only in one state
		pStateSet->AddState(AccessibleStateType::EDITABLE);
	    pStateSet->AddState(AccessibleStateType::ENABLED);
        pStateSet->AddState(AccessibleStateType::SENSITIVE);
	    pStateSet->AddState(AccessibleStateType::MULTI_LINE);
	    pStateSet->AddState(AccessibleStateType::MULTI_SELECTABLE);
		pStateSet->AddState(AccessibleStateType::SHOWING);
		pStateSet->AddState(AccessibleStateType::VISIBLE);
    }
	return pStateSet;
}

::rtl::OUString SAL_CALL
    ScAccessibleEditObject::createAccessibleDescription(void)
    throw (uno::RuntimeException)
{
//    DBG_ERRORFILE("Should never be called, because is set in the constructor.")
    return rtl::OUString();
}

::rtl::OUString SAL_CALL
    ScAccessibleEditObject::createAccessibleName(void)
    throw (uno::RuntimeException)
{
    DBG_ERRORFILE("Should never be called, because is set in the constructor.");
    return rtl::OUString();
}

	///=====  XAccessibleEventBroadcaster  =====================================

void SAL_CALL
    ScAccessibleEditObject::addEventListener(const uno::Reference<XAccessibleEventListener>& xListener)
        throw (uno::RuntimeException)
{
    if (!mpTextHelper)
        CreateTextHelper();

    mpTextHelper->AddEventListener(xListener);

    ScAccessibleContextBase::addEventListener(xListener);
}

void SAL_CALL
    ScAccessibleEditObject::removeEventListener(const uno::Reference<XAccessibleEventListener>& xListener)
        throw (uno::RuntimeException)
{
    if (!mpTextHelper)
        CreateTextHelper();

    mpTextHelper->RemoveEventListener(xListener);

    ScAccessibleContextBase::removeEventListener(xListener);
}

    //=====  XServiceInfo  ====================================================

::rtl::OUString SAL_CALL ScAccessibleEditObject::getImplementationName(void)
        throw (uno::RuntimeException)
{
	return rtl::OUString(RTL_CONSTASCII_USTRINGPARAM ("ScAccessibleEditObject"));
}

//=====  XTypeProvider  =======================================================

uno::Sequence<sal_Int8> SAL_CALL
	ScAccessibleEditObject::getImplementationId(void)
    throw (uno::RuntimeException)
{
    ScUnoGuard aGuard;
    IsObjectValid();
	static uno::Sequence<sal_Int8> aId;
	if (aId.getLength() == 0)
	{
		aId.realloc (16);
		rtl_createUuid (reinterpret_cast<sal_uInt8 *>(aId.getArray()), 0, sal_True);
	}
	return aId;
}

	//====  internal  =========================================================

sal_Bool ScAccessibleEditObject::IsDefunc(
	const uno::Reference<XAccessibleStateSet>& rxParentStates)
{
	return ScAccessibleContextBase::IsDefunc() || !getAccessibleParent().is() ||
		 (rxParentStates.is() && rxParentStates->contains(AccessibleStateType::DEFUNC));
}

void ScAccessibleEditObject::CreateTextHelper()
{
	if (!mpTextHelper)
	{
        ::std::auto_ptr < ScAccessibleTextData > pAccessibleTextData;
        if (meObjectType == CellInEditMode || meObjectType == EditControl)
        {
            pAccessibleTextData.reset
			    (new ScAccessibleEditObjectTextData(mpEditView, mpWindow));
        }
        else
        {
            pAccessibleTextData.reset
			    (new ScAccessibleEditLineTextData(NULL, mpWindow));
        }

        ::std::auto_ptr< SvxEditSource > pEditSource (new ScAccessibilityEditSource(pAccessibleTextData));
        mpTextHelper = new ::accessibility::AccessibleTextHelper(pEditSource );
        mpTextHelper->SetEventSource(this);
        mpTextHelper->SetFocus(mbHasFocus);

        // #i54814# activate cell in edit mode
        if( meObjectType == CellInEditMode )
        {
            // do not activate cell object, if top edit line is active
            const ScInputHandler* pInputHdl = SC_MOD()->GetInputHdl();
            if( pInputHdl && !pInputHdl->IsTopMode() )
            {
                SdrHint aHint( HINT_BEGEDIT );
                mpTextHelper->GetEditSource().GetBroadcaster().Broadcast( aHint );
            }
        }
    }
}