/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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*
* Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_EDITENG_ACCESSIBLEPARAMANAGER_HXX
#define INCLUDED_EDITENG_ACCESSIBLEPARAMANAGER_HXX
#include <config_options.h>
#include <vector>
#include <utility>
#include <tools/gen.hxx>
#include <com/sun/star/awt/Rectangle.hpp>
#include <com/sun/star/uno/Reference.hxx>
#include <cppuhelper/weakref.hxx>
#include <rtl/ref.hxx>
#include <unotools/weakref.hxx>
#include <editeng/AccessibleEditableTextPara.hxx>
#include <editeng/editengdllapi.h>
namespace com::sun::star::accessibility {
class XAccessible; }
class SvxEditSourceAdapter;
namespace accessibility
{
/** This class manages the paragraphs of an AccessibleTextHelper
To facilitate automatic deletion of paragraphs no longer used,
this class uses unotools::WeakReference to hold the objects weakly.
*/
class UNLESS_MERGELIBS(EDITENG_DLLPUBLIC) AccessibleParaManager
{
public:
typedef unotools::WeakReference<AccessibleEditableTextPara> WeakPara;
typedef ::std::pair< WeakPara, css::awt::Rectangle > WeakChild;
typedef ::std::vector< WeakChild > VectorOfChildren;
AccessibleParaManager();
~AccessibleParaManager();
/** Sets a bitset of additional accessible states.
The states are passed to every created child object
(text paragraph). The state values are defined in
css::accessibility::AccessibleStateType.
*/
void SetAdditionalChildStates( sal_Int64 nChildStates );
/** Set the number of paragraphs
@param nNumPara
The total number of paragraphs the EditEngine currently
has (_not_ the number of currently visible children)
*/
void SetNum( sal_Int32 nNumParas );
/** Get the number of paragraphs currently possible */
sal_Int32 GetNum()
const;
// iterators
VectorOfChildren::iterator begin();
VectorOfChildren::iterator end();
/// Set focus to given child
void SetFocus( sal_Int32 nChild );
void FireEvent( sal_Int32 nPara,
const sal_Int16 nEventId )
const;
static bool IsReferencable(rtl::Reference<AccessibleEditableTextPara>
const & aChil
d);
bool IsReferencable( sal_Int32 nChild ) const;
css::uno::Reference<css::accessibility::XAccessible>
CreateChild(sal_Int32 nChild,
const css::uno::Reference<css::accessibility::XAccessible>& xFrontEnd,
SvxEditSourceAdapter& rEditSource, sal_Int32 nParagraphIndex);
WeakChild GetChild( sal_Int32 nParagraphIndex ) const;
bool HasCreatedChild( sal_Int32 nParagraphIndex ) const;
// forwarder to all paragraphs
/// Make all children active and editable (or off)
void SetActive( bool bActive = true );
/// Set state of all children
void SetState( const sal_Int64 nStateId );
/// Unset state of all children
void UnSetState( const sal_Int64 nStateId );
/// Set offset to edit engine for all children
void SetEEOffset ( const Point& rOffset );
/// Dispose all living children
void Dispose ();
// forwarder to given paragraphs
/** Release the given range of paragraphs
All ranges have the meaning [start,end), similar to STL
@param nStartPara
Index of paragraph to start with releasing
@param nEndPara
Index of first paragraph to stop with releasing
*/
void Release( sal_Int32 nStartPara, sal_Int32 nEndPara );
/** Fire event for the given range of paragraphs
All ranges have the meaning [start,end), similar to STL
@param nStartPara
Index of paragraph to start with event firing
@param nEndPara
Index of first paragraph to stop with event firing
*/
void FireEvent( sal_Int32 nStartPara,
sal_Int32 nEndPara,
const sal_Int16 nEventId,
const css::uno::Any& rNewValue = css::uno::Any(),
const css::uno::Any& rOldValue = css::uno::Any() ) const;
/** Functor adapter for ForEach template
Adapts giving functor such that only the paragraph objects
are accessed and the fact that our children are held
weakly is hidden
The functor must provide the following method:
void operator() ( AccessibleEditablePara& )
*/
template < typename Functor > class WeakChildAdapter
{
public:
WeakChildAdapter( Functor& rFunctor ) : mrFunctor(rFunctor) {}
void operator()( const WeakChild& rPara )
{
// retrieve hard reference from weak one
auto aHardRef( rPara.first.get() );
if( aHardRef.is() )
mrFunctor( *aHardRef );
}
private:
Functor& mrFunctor;
};
/** Adapter for unary member functions
Since STL's binder don't work with const& arguments (and
BOOST's neither, at least on MSVC), have to provide our
own adapter for unary member functions.
Create with pointer to member function of
AccessibleEditableTextPara and the corresponding argument.
*/
template < typename Argument > class MemFunAdapter
{
public:
typedef void (::accessibility::AccessibleEditableTextPara::*FunctionPointer)( Argument );
MemFunAdapter( FunctionPointer aFunPtr, Argument aArg ) : maFunPtr(aFunPtr), maArg(aArg) {}
void operator()( const WeakChild& rPara )
{
// retrieve hard reference from weak one
auto aHardRef( rPara.first.get() );
if( aHardRef.is() )
(*aHardRef.*maFunPtr)( maArg );
}
private:
FunctionPointer maFunPtr;
Argument maArg;
};
private:
/// Set state on given child
void SetState( sal_Int32 nChild, const sal_Int64 nStateId );
/// Unset state on given child
void UnSetState( sal_Int32 nChild, const sal_Int64 nStateId );
/// Init child with default state (as stored in previous SetFocus and SetActive calls)
void InitChild( AccessibleEditableTextPara& rChild,
SvxEditSourceAdapter& rEditSource,
sal_Int32 nChild,
sal_Int32 nParagraphIndex ) const;
// vector the size of the paragraph number of the underlying EditEngine
VectorOfChildren maChildren;
/// Additional states that will be set at every created child object.
sal_Int64 mnChildStates;
// cache EE offset for child creation
Point maEEOffset;
// which child currently has the focus (-1 for none)
sal_Int32 mnFocusedChild;
// whether children are active and editable
bool mbActive;
};
} // end of namespace accessibility
#endif
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