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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#pragma once
#include <memory>
#include <vector>
#include <com/sun/star/accessibility/XAccessibleSelection.hpp>
#include <cppuhelper/implbase.hxx>
#include <toolkit/awt/vclxaccessiblecomponent.hxx>
class VCLXAccessibleListItem;
namespace accessibility
{
class IComboListBoxHelper;
}
/** Base class for the list contained in list- and combo boxes. This class
does not support selection because lists of combo boxes give no direct
access to their underlying list implementation. Look into derived
classes for selection.
*/
class VCLXAccessibleList final
: public cppu::ImplInheritanceHelper<
VCLXAccessibleComponent,
css::accessibility::XAccessible,
css::accessibility::XAccessibleSelection>
{
public:
enum BoxType {COMBOBOX, LISTBOX};
VCLXAccessibleList (VCLXWindow* pVCLXindow, BoxType aBoxType,
const css::uno::Reference<
css::accessibility::XAccessible >& _xParent);
/** The index that is passed to this method is returned on following
calls to getAccessibleIndexInParent.
*/
void SetIndexInParent (sal_Int32 nIndex);
/** Process some of the events and delegate the rest to the base classes.
*/
virtual void ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent) override;
virtual void FillAccessibleRelationSet( utl::AccessibleRelationSetHelper& rRelationSet ) override;
/** Called on reception of selection events this method checks all known
list items for a possible change in their selection state and
updates that accordingly. No accessibility events are sent because
the XAccessibleSelection interface is not supported and the items
are transient.
@param sTextOfSelectedItem
This string contains the text of the currently selected
item. It is used to retrieve the index of that item.
*/
void UpdateSelection (std::u16string_view sTextOfSelectedItem);
// XAccessible
virtual css::uno::Reference< css::accessibility::XAccessibleContext> SAL_CALL
getAccessibleContext() override;
// XAccessibleContext
virtual sal_Int64 SAL_CALL getAccessibleChildCount() override final;
css::uno::Reference< css::accessibility::XAccessible> SAL_CALL
getAccessibleChild (sal_Int64 i) override;
virtual css::uno::Reference< css::accessibility::XAccessible > SAL_CALL
getAccessibleParent( ) override;
/** The index returned as index in parent is always the one set with the
SetIndexInParent() method.
*/
virtual sal_Int64 SAL_CALL getAccessibleIndexInParent() override;
virtual sal_Int16 SAL_CALL getAccessibleRole() override;
// XServiceInfo
virtual OUString SAL_CALL getImplementationName() override;
// Return list specific services.
virtual css::uno::Sequence< OUString > SAL_CALL
getSupportedServiceNames() override;
// XAccessibleSelection
virtual void SAL_CALL selectAccessibleChild( sal_Int64 nChildIndex ) override;
virtual sal_Bool SAL_CALL isAccessibleChildSelected( sal_Int64 nChildIndex ) override;
virtual void SAL_CALL clearAccessibleSelection( ) override;
virtual void SAL_CALL selectAllAccessibleChildren( ) override;
virtual sal_Int64 SAL_CALL getSelectedAccessibleChildCount( ) override;
virtual css::uno::Reference< css::accessibility::XAccessible > SAL_CALL getSelectedAccessibleChild( sal_Int64 nSelectedChildIndex ) override;
virtual void SAL_CALL deselectAccessibleChild( sal_Int64 nSelectedChildIndex ) override;
virtual css::awt::Point SAL_CALL getLocationOnScreen( ) override;
bool IsInDropDown() const;
void HandleDropOpen();
void ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent, bool b_IsDropDownList);
void UpdateSelection_Acc (std::u16string_view sTextOfSelectedItem, bool b_IsDropDownList);
void UpdateSelection_Impl_Acc (bool b_IsDropDownList);
static void NotifyListItem(css::uno::Any const & val);
::accessibility::IComboListBoxHelper* getListBoxHelper() { return m_pListBoxHelper.get(); }
private:
BoxType m_aBoxType;
std::unique_ptr<::accessibility::IComboListBoxHelper> m_pListBoxHelper;
std::vector<rtl::Reference<VCLXAccessibleListItem>> m_aAccessibleChildren;
sal_Int32 m_nVisibleLineCount;
/// Index in parent. This is settable from the outside.
sal_Int32 m_nIndexInParent;
sal_Int32 m_nLastTopEntry;
sal_Int32 m_nLastSelectedPos;
bool m_bDisableProcessEvent;
bool m_bVisible;
sal_Int32 m_nCurSelectedPos;
virtual ~VCLXAccessibleList() override = default;
sal_Int64 implGetAccessibleChildCount();
/** This function is called from the implementation helper during a
XComponent::dispose call. Free the list of items and the items themselves.
*/
virtual void SAL_CALL disposing() override;
/** This method adds the states
AccessibleStateType::FOCUSABLE and possibly
AccessibleStateType::MULTI_SELECTABLE to the state set
of the base classes.
*/
virtual void FillAccessibleStateSet (sal_Int64& rStateSet) override;
/** Create the specified child and insert it into the list of children.
Sets the child's states.
*/
rtl::Reference<VCLXAccessibleListItem> CreateChild (sal_Int32 i);
/** Call this method when the item list has been changed, i.e. items
have been deleted or inserted.
*/
void HandleChangedItemList();
// VCLXAccessibleComponent
virtual css::awt::Rectangle implGetBounds( ) override;
/** We need to save the accessible parent to return it in getAccessibleParent(),
because this method of the base class returns the wrong parent.
*/
css::uno::Reference< css::accessibility::XAccessible > m_xParent;
void UpdateEntryRange_Impl();
void UpdateSelection_Impl(sal_Int32 nPos = 0);
bool checkEntrySelected(sal_Int32 _nPos,
css::uno::Any& _rNewValue,
css::uno::Reference< css::accessibility::XAccessible >& _rxNewAcc);
void notifyVisibleStates(bool _bSetNew );
void UpdateVisibleLineCount();
};
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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