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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sc.hxx"
#include "scitems.hxx"
#include <svx/eeitem.hxx>
#include <tools/gen.hxx>
#include "AccessibleText.hxx"
#include "editsrc.hxx"
#include "AccessiblePreviewCell.hxx"
#include "AccessibilityHints.hxx"
#include "prevwsh.hxx"
#include "unoguard.hxx"
#include "prevloc.hxx"
#include "document.hxx"
#include <svx/AccessibleTextHelper.hxx>
#include <unotools/accessiblestatesethelper.hxx>
#include <svx/brshitem.hxx>
#include <vcl/window.hxx>
#include <toolkit/helper/convert.hxx>

#include <com/sun/star/accessibility/AccessibleStateType.hpp>

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

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

ScAccessiblePreviewCell::ScAccessiblePreviewCell( const ::com::sun::star::uno::Reference<
                                ::com::sun::star::accessibility::XAccessible>& rxParent,
                            ScPreviewShell* pViewShell, /* const */ ScAddress& rCellAddress,
                            sal_Int32 nIndex ) :
    ScAccessibleCellBase( rxParent, ( pViewShell ? pViewShell->GetDocument() : NULL ), rCellAddress, nIndex ),
    mpViewShell( pViewShell ),
    mpTextHelper(NULL)
{
    if (mpViewShell)
        mpViewShell->AddAccessibilityObject(*this);
}

ScAccessiblePreviewCell::~ScAccessiblePreviewCell()
{
    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 ScAccessiblePreviewCell::disposing()
{
    ScUnoGuard aGuard;
    if (mpViewShell)
    {
        mpViewShell->RemoveAccessibilityObject(*this);
        mpViewShell = NULL;
    }

    if (mpTextHelper)
        DELETEZ(mpTextHelper);

    ScAccessibleCellBase::disposing();
}

void ScAccessiblePreviewCell::Notify( SfxBroadcaster& rBC, const SfxHint& rHint )
{
    if (rHint.ISA( SfxSimpleHint ))
    {
        const SfxSimpleHint& rRef = (const SfxSimpleHint&)rHint;
        if (rRef.GetId() == SC_HINT_ACC_VISAREACHANGED)
        {
            if (mpTextHelper)
                mpTextHelper->UpdateChildren();
        }
    }

    ScAccessibleContextBase::Notify(rBC, rHint);
}

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

uno::Reference< XAccessible > SAL_CALL ScAccessiblePreviewCell::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;
}

void SAL_CALL ScAccessiblePreviewCell::grabFocus() throw (uno::RuntimeException)
{
     ScUnoGuard aGuard;
    IsObjectValid();
    if (getAccessibleParent().is())
    {
        uno::Reference<XAccessibleComponent> xAccessibleComponent(getAccessibleParent()->getAccessibleContext(), uno::UNO_QUERY);
        if (xAccessibleComponent.is())
            xAccessibleComponent->grabFocus();
    }
}

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

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

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

uno::Reference<XAccessibleStateSet> SAL_CALL ScAccessiblePreviewCell::getAccessibleStateSet()
                            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
    {
        pStateSet->AddState(AccessibleStateType::ENABLED);
        pStateSet->AddState(AccessibleStateType::MULTI_LINE);
        if (IsOpaque(xParentStates))
            pStateSet->AddState(AccessibleStateType::OPAQUE);
        if (isShowing())
            pStateSet->AddState(AccessibleStateType::SHOWING);
        pStateSet->AddState(AccessibleStateType::TRANSIENT);
        if (isVisible())
            pStateSet->AddState(AccessibleStateType::VISIBLE);
        // #111635# MANAGES_DESCENDANTS (for paragraphs)
        pStateSet->AddState(AccessibleStateType::MANAGES_DESCENDANTS);
    }
    return pStateSet;
}

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

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

uno::Sequence<rtl::OUString> SAL_CALL ScAccessiblePreviewCell::getSupportedServiceNames()
                                                    throw(uno::RuntimeException)
{
    uno::Sequence< ::rtl::OUString > aSequence = ScAccessibleContextBase::getSupportedServiceNames();
    sal_Int32 nOldSize(aSequence.getLength());
    aSequence.realloc(nOldSize + 1);
    ::rtl::OUString* pNames = aSequence.getArray();

    pNames[nOldSize] = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.table.AccessibleCellView"));

    return aSequence;
}

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

uno::Sequence<sal_Int8> SAL_CALL
    ScAccessiblePreviewCell::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  =========================================================

Rectangle ScAccessiblePreviewCell::GetBoundingBoxOnScreen() const throw (uno::RuntimeException)
{
    Rectangle aCellRect;
    if (mpViewShell)
    {
        mpViewShell->GetLocationData().GetCellPosition( maCellAddress, aCellRect );
        Window* pWindow = mpViewShell->GetWindow();
        if (pWindow)
        {
            Rectangle aRect = pWindow->GetWindowExtentsRelative(NULL);
            aCellRect.setX(aCellRect.getX() + aRect.getX());
            aCellRect.setY(aCellRect.getY() + aRect.getY());
        }
    }
    return aCellRect;
}

Rectangle ScAccessiblePreviewCell::GetBoundingBox() const throw (uno::RuntimeException)
{
    Rectangle aCellRect;
    if (mpViewShell)
    {
        mpViewShell->GetLocationData().GetCellPosition( maCellAddress, aCellRect );
        uno::Reference<XAccessible> xAccParent = const_cast<ScAccessiblePreviewCell*>(this)->getAccessibleParent();
        if (xAccParent.is())
        {
            uno::Reference<XAccessibleContext> xAccParentContext = xAccParent->getAccessibleContext();
            uno::Reference<XAccessibleComponent> xAccParentComp (xAccParentContext, uno::UNO_QUERY);
            if (xAccParentComp.is())
            {
                Rectangle aParentRect (VCLRectangle(xAccParentComp->getBounds()));
                aCellRect.setX(aCellRect.getX() - aParentRect.getX());
                aCellRect.setY(aCellRect.getY() - aParentRect.getY());
            }
        }
    }
    return aCellRect;
}

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

sal_Bool ScAccessiblePreviewCell::IsEditable(
    const uno::Reference<XAccessibleStateSet>& /* rxParentStates */)
{
    return sal_False;
}

sal_Bool ScAccessiblePreviewCell::IsOpaque(
    const uno::Reference<XAccessibleStateSet>& /* rxParentStates */)
{
    // test whether there is a background color
    //! could be moved to ScAccessibleCellBase

    sal_Bool bOpaque(sal_True);
    if (mpDoc)
    {
        const SvxBrushItem* pItem = (const SvxBrushItem*)mpDoc->GetAttr(
            maCellAddress.Col(), maCellAddress.Row(), maCellAddress.Tab(), ATTR_BACKGROUND);
        if (pItem)
            bOpaque = pItem->GetColor() != COL_TRANSPARENT;
    }
    return bOpaque;
}

void ScAccessiblePreviewCell::CreateTextHelper()
{
    if (!mpTextHelper)
    {
        ::std::auto_ptr < ScAccessibleTextData > pAccessiblePreviewCellTextData
            (new ScAccessiblePreviewCellTextData(mpViewShell, maCellAddress));
        ::std::auto_ptr< SvxEditSource > pEditSource (new ScAccessibilityEditSource(pAccessiblePreviewCellTextData));

        mpTextHelper = new ::accessibility::AccessibleTextHelper( pEditSource );
        mpTextHelper->SetEventSource( this );

        // #111635# paragraphs in preview are transient
        ::accessibility::AccessibleTextHelper::VectorOfStates aChildStates;
        aChildStates.push_back( AccessibleStateType::TRANSIENT );
        mpTextHelper->SetAdditionalChildStates( aChildStates );
    }
}