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Diffstat (limited to 'accessibility/inc/standard/vclxaccessiblebox.hxx')
| -rw-r--r-- | accessibility/inc/standard/vclxaccessiblebox.hxx | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/accessibility/inc/standard/vclxaccessiblebox.hxx b/accessibility/inc/standard/vclxaccessiblebox.hxx new file mode 100644 index 000000000..f475e4f04 --- /dev/null +++ b/accessibility/inc/standard/vclxaccessiblebox.hxx @@ -0,0 +1,157 @@ +/* -*- 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 <com/sun/star/accessibility/XAccessible.hpp> +#include <com/sun/star/accessibility/XAccessibleAction.hpp> +#include <com/sun/star/accessibility/XAccessibleKeyBinding.hpp> +#include <com/sun/star/accessibility/XAccessibleValue.hpp> +#include <toolkit/awt/vclxaccessiblecomponent.hxx> +#include <cppuhelper/implbase3.hxx> + + +typedef ::cppu::ImplHelper3< + css::accessibility::XAccessible, + css::accessibility::XAccessibleValue, + css::accessibility::XAccessibleAction + > VCLXAccessibleBox_BASE; + + +/** Base class for list- and combo boxes. This class manages the box' + children. The classed derived from this one have only to implement the + IsValid method and return the correct implementation name. +*/ +class VCLXAccessibleBox + : public VCLXAccessibleComponent, + public VCLXAccessibleBox_BASE +{ +public: + enum BoxType {COMBOBOX, LISTBOX}; + + /** The constructor is initialized with the box type which may be + either COMBOBOX or LISTBOX and a flag + indicating whether the box is a drop down box. + */ + VCLXAccessibleBox (VCLXWindow* pVCLXindow, BoxType aType, bool bIsDropDownBox); + + // XTypeProvider + DECLARE_XTYPEPROVIDER() + + // XInterface + DECLARE_XINTERFACE() + + + // XAccessible + + virtual css::uno::Reference< css::accessibility::XAccessibleContext > SAL_CALL + getAccessibleContext( ) override; + + // XAccessibleContext + + /** Each object has one or two children: an optional text field and the + actual list. The text field is not provided for non drop down list + boxes. + */ + sal_Int32 SAL_CALL getAccessibleChildCount() final override; + /** For drop down list boxes the text field is a not editable + VCLXAccessibleTextField, for combo boxes it is an + editable VLCAccessibleEdit. + */ + css::uno::Reference< css::accessibility::XAccessible> SAL_CALL + getAccessibleChild (sal_Int32 i) override; + /** The role is always AccessibleRole::COMBO_BOX. + */ + sal_Int16 SAL_CALL getAccessibleRole() override; + + // XAccessibleAction + + /** There is one action for drop down boxes and none for others. + */ + virtual sal_Int32 SAL_CALL getAccessibleActionCount() final override; + /** The action for drop down boxes lets the user toggle the visibility of the + popup menu. + */ + virtual sal_Bool SAL_CALL doAccessibleAction (sal_Int32 nIndex) override; + /** The returned string is associated with resource + RID_STR_ACC_ACTION_TOGGLEPOPUP. + */ + virtual OUString SAL_CALL getAccessibleActionDescription (sal_Int32 nIndex) override; + /** No keybinding returned so far. + */ + virtual css::uno::Reference< css::accessibility::XAccessibleKeyBinding > SAL_CALL + getAccessibleActionKeyBinding( sal_Int32 nIndex ) override; + + // XAccessibleValue + + virtual css::uno::Any SAL_CALL getCurrentValue( ) override; + + virtual sal_Bool SAL_CALL setCurrentValue( + const css::uno::Any& aNumber ) override; + + virtual css::uno::Any SAL_CALL getMaximumValue( ) override; + + virtual css::uno::Any SAL_CALL getMinimumValue( ) override; +protected: + /** Specifies whether the box is a combo box or a list box. List boxes + have multi selection. + */ + BoxType m_aBoxType; + + /// Specifies whether the box is a drop down box and thus has an action. + bool m_bIsDropDownBox; + + /// The child that represents the text field if there is one. + css::uno::Reference< css::accessibility::XAccessible> + m_xText; + + /// The child that contains the items of this box. + css::uno::Reference< css::accessibility::XAccessible> + m_xList; + + /** This flag specifies whether an object has a text field as child + regardless of whether that child being currently instantiated or + not. + */ + bool m_bHasTextChild; + + /** This flag specifies whether an object has a list as child regardless + of whether that child being currently instantiated or not. This + flag is always true in the current implementation because the list + child is just another wrapper around this object and thus has the + same life time. + */ + bool m_bHasListChild; + + virtual ~VCLXAccessibleBox() override = default; + + /** Returns true when the object is valid. + */ + virtual bool IsValid() const = 0; + + virtual void ProcessWindowChildEvent (const VclWindowEvent& rVclWindowEvent) override; + virtual void ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent) override; + + virtual void FillAccessibleStateSet( utl::AccessibleStateSetHelper& rStateSet ) override; + + sal_Int32 implGetAccessibleChildCount(); +}; + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |