toolkit/source/controls/table/defaultinputhandler.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   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 #include <controls/table/defaultinputhandler.hxx>
  21 #include <controls/table/tablecontrolinterface.hxx>
  22
  23 #include <vcl/event.hxx>
  24 #include <osl/diagnose.h>
  25
  26 namespace svt::table
  27 {
  28
  29
  30     //= DefaultInputHandler
  31
  32
  33     DefaultInputHandler::DefaultInputHandler()
  34     {
  35         aMouseFunctions.push_back( new ColumnResize );
  36         aMouseFunctions.push_back( new RowSelection );
  37         aMouseFunctions.push_back( new ColumnSortHandler );
  38     }
  39
  40
  41     DefaultInputHandler::~DefaultInputHandler()
  42     {
  43     }
  44
  45
  46     bool DefaultInputHandler::delegateMouseEvent( ITableControl& i_control, const MouseEvent& i_event,
  47         FunctionResult ( MouseFunction::*i_handlerMethod )( ITableControl&, const MouseEvent& ) )
  48     {
  49         if ( pActiveFunction.is() )
  50         {
  51             bool furtherHandler = false;
  52             switch ( (pActiveFunction.get()->*i_handlerMethod)( i_control, i_event ) )
  53             {
  54             case ActivateFunction:
  55                 OSL_ENSURE( false, "lcl_delegateMouseEvent: unexpected - function already *is* active!" );
  56                 break;
  57             case ContinueFunction:
  58                 break;
  59             case DeactivateFunction:
  60                 pActiveFunction.clear();
  61                 break;
  62             case SkipFunction:
  63                 furtherHandler = true;
  64                 break;
  65             }
  66             if ( !furtherHandler )
  67                 // handled the event
  68                 return true;
  69         }
  70
  71         // ask all other handlers
  72         bool handled = false;
  73         for (auto const& mouseFunction : aMouseFunctions)
  74         {
  75             if (handled)
  76                 break;
  77             if (mouseFunction == pActiveFunction)
  78                 // we already invoked this function
  79                 continue;
  80
  81             switch ( (mouseFunction.get()->*i_handlerMethod)( i_control, i_event ) )
  82             {
  83             case ActivateFunction:
  84                 pActiveFunction = mouseFunction;
  85                 handled = true;
  86                 break;
  87             case ContinueFunction:
  88             case DeactivateFunction:
  89                 OSL_ENSURE( false, "lcl_delegateMouseEvent: unexpected: inactive handler cannot be continued or deactivated!" );
  90                 break;
  91             case SkipFunction:
  92                 handled = false;
  93                 break;
  94             }
  95         }
  96         return handled;
  97     }
  98
  99
 100     bool DefaultInputHandler::MouseMove( ITableControl& i_tableControl, const MouseEvent& i_event )
 101     {
 102         return delegateMouseEvent( i_tableControl, i_event, &MouseFunction::handleMouseMove );
 103     }
 104
 105
 106     bool DefaultInputHandler::MouseButtonDown( ITableControl& i_tableControl, const MouseEvent& i_event )
 107     {
 108         return delegateMouseEvent( i_tableControl, i_event, &MouseFunction::handleMouseDown );
 109     }
 110
 111
 112     bool DefaultInputHandler::MouseButtonUp( ITableControl& i_tableControl, const MouseEvent& i_event )
 113     {
 114         return delegateMouseEvent( i_tableControl, i_event, &MouseFunction::handleMouseUp );
 115     }
 116
 117
 118     bool DefaultInputHandler::KeyInput( ITableControl& _rControl, const KeyEvent& rKEvt )
 119     {
 120         bool bHandled = false;
 121
 122         const vcl::KeyCode& rKeyCode = rKEvt.GetKeyCode();
 123         sal_uInt16 nKeyCode = rKeyCode.GetCode();
 124
 125         struct ActionMapEntry
 126         {
 127             sal_uInt16              nKeyCode;
 128             sal_uInt16              nKeyModifier;
 129             TableControlAction  eAction;
 130         }
 131         static const aKnownActions[] = {
 132             { KEY_DOWN,     0,          cursorDown },
 133             { KEY_UP,       0,          cursorUp },
 134             { KEY_LEFT,     0,          cursorLeft },
 135             { KEY_RIGHT,    0,          cursorRight },
 136             { KEY_HOME,     0,          cursorToLineStart },
 137             { KEY_END,      0,          cursorToLineEnd },
 138             { KEY_PAGEUP,   0,          cursorPageUp },
 139             { KEY_PAGEDOWN, 0,          cursorPageDown },
 140             { KEY_PAGEUP,   KEY_MOD1,   cursorToFirstLine },
 141             { KEY_PAGEDOWN, KEY_MOD1,   cursorToLastLine },
 142             { KEY_HOME,     KEY_MOD1,   cursorTopLeft },
 143             { KEY_END,      KEY_MOD1,   cursorBottomRight },
 144             { KEY_SPACE,    KEY_MOD1,   cursorSelectRow },
 145             { KEY_UP,       KEY_SHIFT,  cursorSelectRowUp },
 146             { KEY_DOWN,     KEY_SHIFT,  cursorSelectRowDown },
 147             { KEY_END,      KEY_SHIFT,  cursorSelectRowAreaBottom },
 148             { KEY_HOME,     KEY_SHIFT,  cursorSelectRowAreaTop }
 149         };
 150         for (const ActionMapEntry& rAction : aKnownActions)
 151         {
 152             if ( ( rAction.nKeyCode == nKeyCode ) && ( rAction.nKeyModifier == rKeyCode.GetModifier() ) )
 153             {
 154                 bHandled = _rControl.dispatchAction( rAction.eAction );
 155                 break;
 156             }
 157         }
 158
 159         return bHandled;
 160     }
 161
 162
 163     bool DefaultInputHandler::GetFocus( ITableControl& _rControl )
 164     {
 165         _rControl.showCursor();
 166         return false;   // continue processing
 167     }
 168
 169
 170     bool DefaultInputHandler::LoseFocus( ITableControl& _rControl )
 171     {
 172         _rControl.hideCursor();
 173         return false;   // continue processing
 174     }
 175
 176
 177 } // namespace svt::table
 178
 179
 180 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */