xref: /AOO41X/main/sd/source/ui/inc/AccessibleTreeNode.hxx (revision c45d927ae478a6b27be268f8970f881a09d05b3f)

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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
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#ifndef SD_ACCESSIBILITY_ACCESSIBLE_BASE_HXX
#define SD_ACCESSIBILITY_ACCESSIBLE_BASE_HXX

#include "MutexOwner.hxx"
#include <cppuhelper/compbase5.hxx>
#include <com/sun/star/accessibility/XAccessible.hpp>
#include <com/sun/star/accessibility/XAccessibleContext.hpp>
#include <com/sun/star/accessibility/XAccessibleComponent.hpp>
#include <com/sun/star/accessibility/XAccessibleEventBroadcaster.hpp>
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/DisposedException.hpp>
#include <com/sun/star/awt/XFocusListener.hpp>
#include <com/sun/star/document/XEventListener.hpp>
#include <unotools/accessiblestatesethelper.hxx>
#include <tools/link.hxx>
#include <rtl/ref.hxx>

class VclWindowEvent;

namespace sd { namespace toolpanel {
class TreeNode;
class TreeNodeStateChangeEvent;
} }


namespace utl {
class AccessibleStateSetHelper;
}

namespace accessibility {


class AccessibleSlideSorterObject;

typedef ::cppu::WeakComponentImplHelper5<
    ::com::sun::star::accessibility::XAccessible,
    ::com::sun::star::accessibility::XAccessibleEventBroadcaster,
    ::com::sun::star::accessibility::XAccessibleContext,
    ::com::sun::star::accessibility::XAccessibleComponent,
    ::com::sun::star::lang::XServiceInfo
    > AccessibleTreeNodeBase;

/** This class makes objects based on the sd::toolpanel::TreeNode
    accessible.
*/
class AccessibleTreeNode
    : public ::sd::MutexOwner,
      public AccessibleTreeNodeBase
{
public:
    /** Create a new object for the given tree node.  The accessible parent
        is taken from the window returned by GetAccessibleParent() when
        called at the window of the node.
        @param rNode
            The TreeNode to make accessible.
        @param rsName
            The accessible name that will be returned by getAccessibleName().
        @param rsDescription
            The accessible description that will be returned by
            getAccessibleDescription().
        @param eRole
            The role that will be returned by getAccessibleRole().
    */
    AccessibleTreeNode(
        ::sd::toolpanel::TreeNode& rNode,
        const ::rtl::OUString& rsName,
        const ::rtl::OUString& rsDescription,
        sal_Int16 eRole);

    void FireAccessibleEvent (
        short nEventId,
        const ::com::sun::star::uno::Any& rOldValue,
        const ::com::sun::star::uno::Any& rNewValue);

    virtual void SAL_CALL disposing (void);

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

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


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

    virtual void SAL_CALL
        addEventListener(
            const ::com::sun::star::uno::Reference<
            ::com::sun::star::accessibility::XAccessibleEventListener >& rxListener)
        throw (::com::sun::star::uno::RuntimeException);

    virtual void SAL_CALL
        removeEventListener(
            const ::com::sun::star::uno::Reference<
            ::com::sun::star::accessibility::XAccessibleEventListener >& rxListener )
        throw (::com::sun::star::uno::RuntimeException);

	using cppu::WeakComponentImplHelperBase::addEventListener;
	using cppu::WeakComponentImplHelperBase::removeEventListener;

	//=====  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 throw exception.
    virtual ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible> SAL_CALL
    	getAccessibleChild (sal_Int32 nIndex)
        throw (::com::sun::star::lang::IndexOutOfBoundsException, ::com::sun::star::uno::RuntimeException);

    ///	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);

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

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

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

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

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

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

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

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

    virtual sal_Int32 SAL_CALL getBackground (void)
        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.
    */
	virtual ::com::sun::star::uno::Sequence< ::rtl::OUString> SAL_CALL
    	getSupportedServiceNames (void)
        throw (::com::sun::star::uno::RuntimeException);


protected:
    ::com::sun::star::uno::Reference<
        ::com::sun::star::accessibility::XAccessible> mxParent;
    ::sd::toolpanel::TreeNode& mrTreeNode;
    ::rtl::Reference< ::utl::AccessibleStateSetHelper> mrStateSet;

    const ::rtl::OUString msName;
    const ::rtl::OUString msDescription;
    const sal_Int16 meRole;

    virtual ~AccessibleTreeNode (void);

    /** Check whether or not the object has been disposed (or is in the
        state of beeing disposed).  If that is the case then
        DisposedException is thrown to inform the (indirect) caller of the
        foul deed.
    */
    void ThrowIfDisposed (void)
        throw (::com::sun::star::lang::DisposedException);

    /** Check whether or not the object has been disposed (or is in the
        state of beeing disposed).

        @return sal_True, if the object is disposed or in the course
        of being disposed. Otherwise, sal_False is returned.
    */
    sal_Bool IsDisposed (void);

    /** Update the mpStateSet member to reflect the current state of the
        TreeNode.  When one of the states has changed since the last call
        then an appropriate event is sent.
    */
    virtual void UpdateStateSet (void);

    /** Update a single state and sent an event if its value changes.
    */
    void UpdateState(
        sal_Int16 aState,
        bool bValue);

    DECL_LINK(StateChangeListener, ::sd::toolpanel::TreeNodeStateChangeEvent*);
    DECL_LINK(WindowEventListener, VclWindowEvent*);

private:
    sal_uInt32 mnClientId;

    /// The common part of the constructor.
    void CommonConstructor (void);
};

} // end of namespace ::accessibility

#endif