AOO410/main/toolkit/inc/toolkit/controls/accessiblecontrolcontext.hxx

/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/



#ifndef TOOLKIT_ACCESSIBLE_CONTROL_CONTEXT_HXX
#define TOOLKIT_ACCESSIBLE_CONTROL_CONTEXT_HXX

#include <comphelper/accessiblecomponenthelper.hxx>
#include <comphelper/accimplaccess.hxx>
#include <comphelper/uno3.hxx>
#include <com/sun/star/lang/XEventListener.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/awt/XWindow.hpp>

class Window;
//........................................................................
namespace toolkit
{
//........................................................................

	//====================================================================
	//= OAccessibleControlContext
	//====================================================================

	typedef	::comphelper::OAccessibleComponentHelper	OAccessibleControlContext_Base;
	typedef ::cppu::ImplHelper1	<	::com::sun::star::lang::XEventListener
								>	OAccessibleControlContext_IBase;

	/** class implementing the AccessibleContext for an UNO control - to be used in design mode of the control.
		<p><b>life time control<b/><br/>
		This control should be held weak by the creator (an UNO control), it itself holds a hard reference to the
		control model, and a weak reference to the control. The reference to the model is freed when the model
		is beeing disposed.</p>
	*/
	class OAccessibleControlContext
			:public ::comphelper::OAccessibleImplementationAccess
			,public OAccessibleControlContext_Base
			,public OAccessibleControlContext_IBase
	{
	private:
		::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySet >
					m_xControlModel;		// the model of the control which's context we implement
		::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySetInfo >
					m_xModelPropsInfo;		// the cached property set info of the model

	protected:
		/// ctor. @see Init
		OAccessibleControlContext();
		~OAccessibleControlContext();

		/** late ctor
		*/
		void Init(
			const ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible >& _rxCreator
		)	SAL_THROW( ( ::com::sun::star::uno::Exception ) );

		// OCommonAccessibleComponent overridables
		virtual ::com::sun::star::awt::Rectangle SAL_CALL implGetBounds(  ) throw (::com::sun::star::uno::RuntimeException);

	public:
		/** creates an accessible context for an uno control
		@param _rxCreator
			the uno control's XAccessible interface. This must be an XControl, from which an XControlModel
			can be retrieved.
		*/
		static OAccessibleControlContext* create(
			const ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible >& _rxCreator
		) SAL_THROW( ( ) );

	protected:
		// XInterface
		DECLARE_XINTERFACE( )
		DECLARE_XTYPEPROVIDER( )

		// XAccessibleContext
		virtual sal_Int32 SAL_CALL getAccessibleChildCount(  ) throw (::com::sun::star::uno::RuntimeException);
		virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible > SAL_CALL getAccessibleChild( sal_Int32 i ) throw (::com::sun::star::lang::IndexOutOfBoundsException, ::com::sun::star::uno::RuntimeException);
		virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible > SAL_CALL getAccessibleParent(  ) throw (::com::sun::star::uno::RuntimeException);
		virtual sal_Int16 SAL_CALL getAccessibleRole(  ) throw (::com::sun::star::uno::RuntimeException);
		virtual ::rtl::OUString SAL_CALL getAccessibleDescription(  ) throw (::com::sun::star::uno::RuntimeException);
		virtual ::rtl::OUString SAL_CALL getAccessibleName(  ) throw (::com::sun::star::uno::RuntimeException);
		virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleRelationSet > SAL_CALL getAccessibleRelationSet(  ) throw (::com::sun::star::uno::RuntimeException);
		virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleStateSet > SAL_CALL getAccessibleStateSet(  ) throw (::com::sun::star::uno::RuntimeException);

		// XAccessibleComponent
		virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible > SAL_CALL getAccessibleAtPoint( const ::com::sun::star::awt::Point& aPoint ) throw (::com::sun::star::uno::RuntimeException);
		virtual void SAL_CALL grabFocus(  ) throw (::com::sun::star::uno::RuntimeException);
		virtual ::com::sun::star::uno::Any SAL_CALL getAccessibleKeyBinding(  ) 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);

		// XEventListener
        using comphelper::OAccessibleContextHelper::disposing;
		virtual void SAL_CALL disposing( const ::com::sun::star::lang::EventObject& Source ) throw (::com::sun::star::uno::RuntimeException);

	private:
		// retrieves the value of a string property from the model, if the property is present
		::rtl::OUString	getModelStringProperty( const sal_Char* _pPropertyName ) SAL_THROW( ( ) );

		// starts listening at the control model (currently for disposal only)
		void startModelListening( ) SAL_THROW( ( ::com::sun::star::uno::Exception ) );
		// stops listening at the control model
		void stopModelListening( ) SAL_THROW( ( ::com::sun::star::uno::Exception ) );

		Window*	implGetWindow( ::com::sun::star::uno::Reference< ::com::sun::star::awt::XWindow >* _pxUNOWindow = NULL ) const;
	};

//........................................................................
}	// namespace toolkit
//........................................................................

#endif // TOOLKIT_ACCESSIBLE_CONTROL_CONTEXT_HXX