/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_accessibility.hxx"

// includes --------------------------------------------------------------
#include <accessibility/standard/vclxaccessiblebutton.hxx>
#include <accessibility/helper/accresmgr.hxx>
#include <accessibility/helper/accessiblestrings.hrc>

#include <unotools/accessiblestatesethelper.hxx>
#include <comphelper/accessiblekeybindinghelper.hxx>
#include <com/sun/star/awt/KeyModifier.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <cppuhelper/typeprovider.hxx>
#include <comphelper/sequence.hxx>

#include <vcl/button.hxx>

using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::accessibility;
using namespace ::comphelper;


// -----------------------------------------------------------------------------
// VCLXAccessibleButton
// -----------------------------------------------------------------------------

VCLXAccessibleButton::VCLXAccessibleButton( VCLXWindow* pVCLWindow )
	:VCLXAccessibleTextComponent( pVCLWindow )
{
}

// -----------------------------------------------------------------------------

VCLXAccessibleButton::~VCLXAccessibleButton()
{
}

// -----------------------------------------------------------------------------

void VCLXAccessibleButton::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )
{
    switch ( rVclWindowEvent.GetId() )
    {
		case VCLEVENT_PUSHBUTTON_TOGGLE:
        {
			Any aOldValue;
			Any aNewValue;

			PushButton* pButton = (PushButton*) GetWindow();
			if ( pButton && pButton->GetState() == STATE_CHECK )
				aNewValue <<= AccessibleStateType::CHECKED;
			else
				aOldValue <<= AccessibleStateType::CHECKED;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
        }
        break;
		default:
			VCLXAccessibleTextComponent::ProcessWindowEvent( rVclWindowEvent );
   }
}

// -----------------------------------------------------------------------------

void VCLXAccessibleButton::FillAccessibleStateSet( utl::AccessibleStateSetHelper& rStateSet )
{
	VCLXAccessibleTextComponent::FillAccessibleStateSet( rStateSet );

	PushButton* pButton = (PushButton*) GetWindow();
	if ( pButton )
	{
        rStateSet.AddState( AccessibleStateType::FOCUSABLE );

		if ( pButton->GetState() == STATE_CHECK )
            rStateSet.AddState( AccessibleStateType::CHECKED );

		if ( pButton->IsPressed() )
            rStateSet.AddState( AccessibleStateType::PRESSED );
	}
}

// -----------------------------------------------------------------------------
// XInterface
// -----------------------------------------------------------------------------

IMPLEMENT_FORWARD_XINTERFACE2( VCLXAccessibleButton, VCLXAccessibleTextComponent, VCLXAccessibleButton_BASE )

// -----------------------------------------------------------------------------
// XTypeProvider
// -----------------------------------------------------------------------------

IMPLEMENT_FORWARD_XTYPEPROVIDER2( VCLXAccessibleButton, VCLXAccessibleTextComponent, VCLXAccessibleButton_BASE )

// -----------------------------------------------------------------------------
// XServiceInfo
// -----------------------------------------------------------------------------

::rtl::OUString VCLXAccessibleButton::getImplementationName() throw (RuntimeException)
{
	return ::rtl::OUString::createFromAscii( "com.sun.star.comp.toolkit.AccessibleButton" );
}

// -----------------------------------------------------------------------------

Sequence< ::rtl::OUString > VCLXAccessibleButton::getSupportedServiceNames() throw (RuntimeException)
{
	Sequence< ::rtl::OUString > aNames(1);
	aNames[0] = ::rtl::OUString::createFromAscii( "com.sun.star.awt.AccessibleButton" );
	return aNames;
}

// -----------------------------------------------------------------------------
// XAccessibleContext
// -----------------------------------------------------------------------------

::rtl::OUString VCLXAccessibleButton::getAccessibleName(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	::rtl::OUString aName( VCLXAccessibleTextComponent::getAccessibleName() );
	sal_Int32 nLength = aName.getLength();

	if ( nLength >= 3 && aName.matchAsciiL( RTL_CONSTASCII_STRINGPARAM("..."), nLength - 3 ) )
	{
		if ( nLength == 3 )
		{
			// it's a browse button
	        aName = ::rtl::OUString( TK_RES_STRING( RID_STR_ACC_NAME_BROWSEBUTTON ) );
		}
		else
		{
			// remove the three trailing dots
			aName = aName.copy( 0, nLength - 3 );
		}
	}
	else if ( nLength >= 3 && aName.matchAsciiL( RTL_CONSTASCII_STRINGPARAM("<< "), 0 ) )
	{
		// remove the leading symbols
		aName = aName.copy( 3, nLength - 3 );
	}
	else if ( nLength >= 3 && aName.matchAsciiL( RTL_CONSTASCII_STRINGPARAM(" >>"), nLength - 3 ) )
	{
		// remove the trailing symbols
		aName = aName.copy( 0, nLength - 3 );
	}

	return aName;
}

// -----------------------------------------------------------------------------
// XAccessibleAction
// -----------------------------------------------------------------------------

sal_Int32 VCLXAccessibleButton::getAccessibleActionCount( ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return 1;
}

// -----------------------------------------------------------------------------

sal_Bool VCLXAccessibleButton::doAccessibleAction ( sal_Int32 nIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	if ( nIndex < 0 || nIndex >= getAccessibleActionCount() )
        throw IndexOutOfBoundsException();

	PushButton* pButton = (PushButton*) GetWindow();
	if ( pButton )
		pButton->Click();

	return sal_True;
}

// -----------------------------------------------------------------------------

::rtl::OUString VCLXAccessibleButton::getAccessibleActionDescription ( sal_Int32 nIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	if ( nIndex < 0 || nIndex >= getAccessibleActionCount() )
        throw IndexOutOfBoundsException();

	return ::rtl::OUString( TK_RES_STRING( RID_STR_ACC_ACTION_CLICK ) );
}

// -----------------------------------------------------------------------------

Reference< XAccessibleKeyBinding > VCLXAccessibleButton::getAccessibleActionKeyBinding( sal_Int32 nIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
    OExternalLockGuard aGuard( this );

    if ( nIndex < 0 || nIndex >= getAccessibleActionCount() )
        throw IndexOutOfBoundsException();
	
    OAccessibleKeyBindingHelper* pKeyBindingHelper = new OAccessibleKeyBindingHelper();
    Reference< XAccessibleKeyBinding > xKeyBinding = pKeyBindingHelper;

    Window* pWindow = GetWindow();
    if ( pWindow )
    {
        KeyEvent aKeyEvent = pWindow->GetActivationKey();
        KeyCode aKeyCode = aKeyEvent.GetKeyCode();
        if ( aKeyCode.GetCode() != 0 )
        {
            awt::KeyStroke aKeyStroke;
            aKeyStroke.Modifiers = 0;
            if ( aKeyCode.IsShift() )
                aKeyStroke.Modifiers |= awt::KeyModifier::SHIFT;
            if ( aKeyCode.IsMod1() )
                aKeyStroke.Modifiers |= awt::KeyModifier::MOD1;
            if ( aKeyCode.IsMod2() )
                aKeyStroke.Modifiers |= awt::KeyModifier::MOD2;
            if ( aKeyCode.IsMod3() )
                aKeyStroke.Modifiers |= awt::KeyModifier::MOD3;
            aKeyStroke.KeyCode = aKeyCode.GetCode();
            aKeyStroke.KeyChar = aKeyEvent.GetCharCode();
            aKeyStroke.KeyFunc = static_cast< sal_Int16 >( aKeyCode.GetFunction() );
            pKeyBindingHelper->AddKeyBinding( aKeyStroke );
        }
    }

    return xKeyBinding;
}

// -----------------------------------------------------------------------------
// XAccessibleValue
// -----------------------------------------------------------------------------

Any VCLXAccessibleButton::getCurrentValue(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Any aValue;

	PushButton* pButton = (PushButton*) GetWindow();
	if ( pButton )
		aValue <<= (sal_Int32) pButton->IsPressed();

	return aValue;
}

// -----------------------------------------------------------------------------

sal_Bool VCLXAccessibleButton::setCurrentValue( const Any& aNumber ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	sal_Bool bReturn = sal_False;

	PushButton* pButton = (PushButton*) GetWindow();
	if ( pButton )
	{
		sal_Int32 nValue = 0;
		OSL_VERIFY( aNumber >>= nValue );

		if ( nValue < 0 )
			nValue = 0;
		else if ( nValue > 1 )
			nValue = 1;

		pButton->SetPressed( (sal_Bool) nValue );
		bReturn = sal_True;
	}
		
	return bReturn;
}

// -----------------------------------------------------------------------------

Any VCLXAccessibleButton::getMaximumValue(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Any aValue;
	aValue <<= (sal_Int32) 1;
	
	return aValue;
}

// -----------------------------------------------------------------------------

Any VCLXAccessibleButton::getMinimumValue(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Any aValue;
	aValue <<= (sal_Int32) 0;
	
	return aValue;
}

// -----------------------------------------------------------------------------