svx/source/accessibility/AccessibleEmptyEditSource.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
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   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_SVX_SOURCE_ACCESSIBILITY_ACCESSIBLEEMPTYEDITSOURCE_HXX
  21 #define INCLUDED_SVX_SOURCE_ACCESSIBILITY_ACCESSIBLEEMPTYEDITSOURCE_HXX
  22
  23 #include <svl/SfxBroadcaster.hxx>
  24 #include <svl/lstner.hxx>
  25
  26 #include <memory>
  27 #include <editeng/unoedsrc.hxx>
  28
  29 class SdrObject;
  30 class SdrView;
  31 class OutputDevice;
  32
  33 namespace accessibility
  34 {
  35     /** Proxy edit source for shapes without text
  36
  37         Extracted from old SvxDummyEditSource
  38      */
  39     class AccessibleEmptyEditSource : public SvxEditSource, public SfxListener, public SfxBroadcaster
  40     {
  41     public:
  42         /** Create proxy edit source for shapes without text
  43
  44             Since the views don't broadcast their dying, make sure that
  45             this object gets destroyed if the view becomes invalid
  46
  47             The window is necessary, since our views can display on multiple windows
  48
  49             Make sure you only create such an object if the shape _really_
  50             does not contain text.
  51         */
  52         AccessibleEmptyEditSource(  SdrObject& rObj, SdrView& rView, const OutputDevice& rViewWindow );
  53         virtual ~AccessibleEmptyEditSource() override;
  54
  55         // from the SvxEditSource interface
  56         SvxTextForwarder*       GetTextForwarder() override;
  57         SvxViewForwarder*       GetViewForwarder() override;
  58
  59         std::unique_ptr<SvxEditSource> Clone() const override;
  60
  61         // this method internally switches from empty to proxy mode,
  62         // creating an SvxTextEditSource for the functionality.
  63         SvxEditViewForwarder*   GetEditViewForwarder( bool bCreate = false ) override;
  64
  65         void                    UpdateData() override;
  66         SfxBroadcaster&         GetBroadcaster() const override;
  67
  68         // from the SfxListener interface
  69         void                    Notify( SfxBroadcaster& rBC, const SfxHint& rHint ) override;
  70
  71     private:
  72         void Switch2ProxyEditSource();
  73
  74         /** Pointer to edit source implementation. This is switched on
  75             a GetEditViewForwarder( true ) call, to actually create a
  76             SvxTextEditSource.
  77
  78             @dyn
  79          */
  80         std::unique_ptr< SvxEditSource >  mpEditSource;
  81
  82         SdrObject&                      mrObj;
  83         SdrView&                        mrView;
  84         const OutputDevice&             mrViewWindow;
  85
  86         bool                            mbEditSourceEmpty;
  87     };
  88
  89 } // namespace accessibility
  90
  91 #endif
  92
  93 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */