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 * 
 * 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
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#ifndef _SC_ACCESSIBLECONTEXTBASE_HXX
#define _SC_ACCESSIBLECONTEXTBASE_HXX

#include <com/sun/star/accessibility/XAccessible.hpp>
#include <com/sun/star/accessibility/XAccessibleComponent.hpp>
#include <com/sun/star/accessibility/XAccessibleContext.hpp>
#include <com/sun/star/accessibility/XAccessibleEventBroadcaster.hpp>
#ifndef _COM_SUN_STAR_ACCESSIBILITY_IllegalAccessibleComponentStateException_HPP_
#include <com/sun/star/accessibility/IllegalAccessibleComponentStateException.hpp>
#endif
#include <com/sun/star/lang/DisposedException.hpp>
#include <com/sun/star/uno/Reference.hxx>
#include <cppuhelper/weak.hxx>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XTypeProvider.hpp>
#include <com/sun/star/lang/XServiceName.hpp>
#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
#include <vos/mutex.hxx>
#include <cppuhelper/interfacecontainer.h>


#include <svl/lstner.hxx>
#include <cppuhelper/compbase5.hxx>
#include <cppuhelper/implbase1.hxx>
#include <comphelper/servicehelper.hxx>
#include <comphelper/broadcasthelper.hxx>

class Rectangle;

/**	@descr
        This base class provides an implementation of the
        <code>AccessibleContext</code> service.
*/

typedef cppu::WeakAggComponentImplHelper5<
				::com::sun::star::accessibility::XAccessible,
				::com::sun::star::accessibility::XAccessibleComponent,
                ::com::sun::star::accessibility::XAccessibleContext,
				::com::sun::star::accessibility::XAccessibleEventBroadcaster,
                ::com::sun::star::lang::XServiceInfo
				> ScAccessibleContextBaseWeakImpl;

typedef cppu::ImplHelper1<
				::com::sun::star::accessibility::XAccessibleEventListener
				> ScAccessibleContextBaseImplEvent;

class ScAccessibleContextBase
	:	public comphelper::OBaseMutex,
		public ScAccessibleContextBaseWeakImpl,
		public ScAccessibleContextBaseImplEvent,
		public SfxListener
{
public:
	//=====  internal  ========================================================
	ScAccessibleContextBase(
        const ::com::sun::star::uno::Reference<
        ::com::sun::star::accessibility::XAccessible>& rxParent,
		const sal_Int16 aRole);

	virtual void Init();
    virtual void SAL_CALL disposing();
protected:
	virtual ~ScAccessibleContextBase(void);
public:
    using WeakAggComponentImplHelperBase::addEventListener;
    using WeakAggComponentImplHelperBase::removeEventListener;

	///=====  SfxListener  =====================================================

	virtual void Notify( SfxBroadcaster& rBC, const SfxHint& rHint );

	///=====  XInterface  =====================================================

	virtual ::com::sun::star::uno::Any SAL_CALL queryInterface(
		::com::sun::star::uno::Type const & rType )
		throw (::com::sun::star::uno::RuntimeException);

	virtual void SAL_CALL acquire() throw ();

	virtual void SAL_CALL release() throw ();

	///=====  XAccessible  =====================================================

    ///	Return the XAccessibleContext.
    virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext> SAL_CALL
    	getAccessibleContext(void) throw (::com::sun::star::uno::RuntimeException);

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

    virtual sal_Bool SAL_CALL containsPoint(
		const ::com::sun::star::awt::Point& rPoint )
		throw (::com::sun::star::uno::RuntimeException);

    virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible >
		SAL_CALL getAccessibleAtPoint(
		const ::com::sun::star::awt::Point& rPoint )
		throw (::com::sun::star::uno::RuntimeException);

    virtual ::com::sun::star::awt::Rectangle SAL_CALL getBounds(  )
		throw (::com::sun::star::uno::RuntimeException);

    virtual ::com::sun::star::awt::Point SAL_CALL getLocation(  )
		throw (::com::sun::star::uno::RuntimeException);

    virtual ::com::sun::star::awt::Point SAL_CALL getLocationOnScreen(  )
		throw (::com::sun::star::uno::RuntimeException);

    virtual ::com::sun::star::awt::Size SAL_CALL getSize(  )
		throw (::com::sun::star::uno::RuntimeException);

	virtual sal_Bool SAL_CALL isShowing(  )
		throw (::com::sun::star::uno::RuntimeException);

    virtual sal_Bool SAL_CALL isVisible(  )
		throw (::com::sun::star::uno::RuntimeException);

    virtual void SAL_CALL grabFocus(  )
		throw (::com::sun::star::uno::RuntimeException);

    virtual sal_Int32 SAL_CALL getForeground(  ) 
        throw (::com::sun::star::uno::RuntimeException);

    virtual sal_Int32 SAL_CALL getBackground(  ) 
        throw (::com::sun::star::uno::RuntimeException);

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

    ///	Return the number of currently visible children.
    virtual sal_Int32 SAL_CALL
    	getAccessibleChildCount(void) throw (::com::sun::star::uno::RuntimeException);

    ///	Return the specified child or NULL if index is invalid.
    virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible> SAL_CALL
    	getAccessibleChild(sal_Int32 nIndex)
        throw (::com::sun::star::uno::RuntimeException,
				::com::sun::star::lang::IndexOutOfBoundsException);

    ///	Return a reference to the parent.
	virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible> SAL_CALL
    	getAccessibleParent(void)
        throw (::com::sun::star::uno::RuntimeException);

    ///	Return this objects index among the parents children.
	virtual	sal_Int32 SAL_CALL
    	getAccessibleIndexInParent(void)
        throw (::com::sun::star::uno::RuntimeException);

    ///	Return this object's role.
	virtual sal_Int16 SAL_CALL
    	getAccessibleRole(void)
        throw (::com::sun::star::uno::RuntimeException);

    ///	Return this object's description.
	virtual ::rtl::OUString SAL_CALL
    	getAccessibleDescription(void)
        throw (::com::sun::star::uno::RuntimeException);

    ///	Return the object's current name.
	virtual ::rtl::OUString SAL_CALL
    	getAccessibleName(void)
        throw (::com::sun::star::uno::RuntimeException);

	///	Return NULL to indicate that an empty relation set.
	virtual ::com::sun::star::uno::Reference<
            ::com::sun::star::accessibility::XAccessibleRelationSet> SAL_CALL
    	getAccessibleRelationSet(void)
        throw (::com::sun::star::uno::RuntimeException);

    ///	Return the set of current states.
	virtual ::com::sun::star::uno::Reference<
            ::com::sun::star::accessibility::XAccessibleStateSet> SAL_CALL
    	getAccessibleStateSet(void)
        throw (::com::sun::star::uno::RuntimeException);

	/**	Return the parents locale or throw exception if this object has no
    	parent yet/anymore.
    */
	virtual ::com::sun::star::lang::Locale SAL_CALL
    	getLocale(void)
		throw (::com::sun::star::uno::RuntimeException,
			::com::sun::star::accessibility::IllegalAccessibleComponentStateException);

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

    /**	Add listener that is informed of future changes of name,
      	description and so on events.
    */
	virtual void SAL_CALL
    	addEventListener(
        	const ::com::sun::star::uno::Reference<
                ::com::sun::star::accessibility::XAccessibleEventListener>& xListener)
        throw (com::sun::star::uno::RuntimeException);

    //	Remove an existing event listener.
	virtual void SAL_CALL
    	removeEventListener(
			const ::com::sun::star::uno::Reference<
                ::com::sun::star::accessibility::XAccessibleEventListener>& xListener)
        throw (com::sun::star::uno::RuntimeException);

	///=====  XAccessibleEventListener  ========================================

    virtual void SAL_CALL
		disposing( const ::com::sun::star::lang::EventObject& Source )
		throw (::com::sun::star::uno::RuntimeException);

	virtual void SAL_CALL
		notifyEvent(
		const ::com::sun::star::accessibility::AccessibleEventObject& aEvent )
		throw (::com::sun::star::uno::RuntimeException);

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

    /**	Returns an identifier for the implementation of this object.
    */
	virtual ::rtl::OUString SAL_CALL
    	getImplementationName(void)
        throw (::com::sun::star::uno::RuntimeException);

    /**	Return whether the specified service is supported by this class.
    */
    virtual sal_Bool SAL_CALL
    	supportsService(const ::rtl::OUString& sServiceName)
        throw (::com::sun::star::uno::RuntimeException);

    /** Returns a list of all supported services.  In this case that is just
    	the AccessibleContext and Accessible service.
    */
	virtual ::com::sun::star::uno::Sequence< ::rtl::OUString> SAL_CALL
    	getSupportedServiceNames(void)
        throw (::com::sun::star::uno::RuntimeException);

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

 	/// returns the possible types
    virtual ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Type > SAL_CALL
		getTypes()
		throw (::com::sun::star::uno::RuntimeException);

	/**	Returns a implementation id.
    */
    virtual ::com::sun::star::uno::Sequence<sal_Int8> SAL_CALL
        getImplementationId(void)
        throw (::com::sun::star::uno::RuntimeException);

protected:
    ///	Return this object's description.
	virtual ::rtl::OUString SAL_CALL
    	createAccessibleDescription(void)
        throw (::com::sun::star::uno::RuntimeException);

    ///	Return the object's current name.
	virtual ::rtl::OUString SAL_CALL
    	createAccessibleName(void)
        throw (::com::sun::star::uno::RuntimeException);

    ///	Return the object's current bounding box relative to the desktop.
	virtual Rectangle GetBoundingBoxOnScreen(void) const
		throw (::com::sun::star::uno::RuntimeException);

	///	Return the object's current bounding box relative to the parent object.
	virtual Rectangle GetBoundingBox(void) const
		throw (::com::sun::star::uno::RuntimeException);

public:
    /// Calls all Listener to tell they the change.
	void
		CommitChange(const com::sun::star::accessibility::AccessibleEventObject& rEvent) const;

    /// change the name and call the listener to tell they the change
    void
        ChangeName();

protected:
	/// Calls all FocusListener to tell they that the focus is gained.
	void CommitFocusGained() const;

	/// Calls all FocusListener to tell they that the focus is lost.
	void CommitFocusLost() const;

	sal_Bool IsDefunc() const { return rBHelper.bDisposed; }

    virtual void IsObjectValid() const
        throw (::com::sun::star::lang::DisposedException);

    /// Use this method to set initial Name without notification
    void SetName(const rtl::OUString& rName) { msName = rName; }
    /// Use this method to set initial Description without notification
    void SetDescription(const rtl::OUString& rDesc) { msDescription = rDesc; }

    ///	Reference to the parent object.
    ::com::sun::star::uno::Reference<
    	 ::com::sun::star::accessibility::XAccessible> mxParent;

private:
    /**	Description of this object.  This is not a constant because it can
    	be set from the outside.  Furthermore, it changes according the the
        draw page's display mode.
    */
    ::rtl::OUString msDescription;

    /**	Name of this object.  It changes according the the draw page's
        display mode.
    */
    ::rtl::OUString msName;

    /// client id in the AccessibleEventNotifier queue
    sal_uInt32 mnClientId;

	/** This is the role of this object.
	*/
	sal_Int16 maRole;
};


#endif