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Make TAB behaviour in wxGrid more configurable.

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Allow making TAB/Shift-TAB wrap to the next/previous row or going to the
next/previous control when the cursor is at the end/beginning of the current
row easily.

Also add wxEVT_GRID_TABBING event to allow customizing TAB behaviour even
further.

Update the sample to show the different possible standard behaviours and a
stupid example of a custom one (it would be probably more useful to implement
something a tad more realistic, e.g. tabbing to the next non-empty cell).

Closes #14711.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72672 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2012-10-13 22:55:18 +00:00
parent ac6a837eed
commit 1dc17bcafb
6 changed files with 193 additions and 20 deletions
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94
src/generic/grid.cpp
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@@ -155,6 +155,7 @@ wxDEFINE_EVENT( wxEVT_GRID_SELECT_CELL, wxGridEvent );
wxDEFINE_EVENT( wxEVT_GRID_EDITOR_SHOWN, wxGridEvent );
wxDEFINE_EVENT( wxEVT_GRID_EDITOR_HIDDEN, wxGridEvent );
wxDEFINE_EVENT( wxEVT_GRID_EDITOR_CREATED, wxGridEditorCreatedEvent );
wxDEFINE_EVENT( wxEVT_GRID_TABBING, wxGridEvent );
// ----------------------------------------------------------------------------
// private helpers
@@ -2514,6 +2515,8 @@ void wxGrid::Init()
// now anyhow, so just set the parameters directly
m_xScrollPixelsPerLine = GRID_SCROLL_LINE_X;
m_yScrollPixelsPerLine = GRID_SCROLL_LINE_Y;
m_tabBehaviour = Tab_Stop;
}
// ----------------------------------------------------------------------------
@@ -4933,30 +4936,18 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
break;
case WXK_TAB:
if (event.ShiftDown())
{
if ( GetGridCursorCol() > 0 )
// send an event to the grid's parents for custom handling
wxGridEvent gridEvt(GetId(), wxEVT_GRID_TABBING, this,
GetGridCursorRow(), GetGridCursorCol(),
-1, -1, false, event);
if ( ProcessWindowEvent(gridEvt) )
{
MoveCursorLeft( false );
}
else
{
// at left of grid
DisableCellEditControl();
}
}
else
{
if ( GetGridCursorCol() < GetNumberCols() - 1 )
{
MoveCursorRight( false );
}
else
{
// at right of grid
DisableCellEditControl();
// the event has been handled so no need for more processing
break;
}
}
DoGridProcessTab( event );
break;
case WXK_HOME:
@@ -5088,6 +5079,69 @@ void wxGrid::OnEraseBackground(wxEraseEvent&)
{
}
void wxGrid::DoGridProcessTab(wxKeyboardState& kbdState)
{
const bool isForwardTab = !kbdState.ShiftDown();
// TAB processing only changes when we are at the borders of the grid, so
// let's first handle the common behaviour when we are not at the border.
if ( isForwardTab )
{
if ( GetGridCursorCol() < GetNumberCols() - 1 )
{
MoveCursorRight( false );
return;
}
}
else // going back
{
if ( GetGridCursorCol() )
{
MoveCursorLeft( false );
return;
}
}
// We only get here if the cursor is at the border of the grid, apply the
// configured behaviour.
switch ( m_tabBehaviour )
{
case Tab_Stop:
// Nothing special to do, we remain at the current cell.
break;
case Tab_Wrap:
// Go to the beginning of the next or the end of the previous row.
if ( isForwardTab )
{
if ( GetGridCursorRow() < GetNumberRows() - 1 )
{
GoToCell( GetGridCursorRow() + 1, 0 );
return;
}
}
else
{
if ( GetGridCursorRow() > 0 )
{
GoToCell( GetGridCursorRow() - 1, GetNumberCols() - 1 );
return;
}
}
break;
case Tab_Leave:
if ( Navigate( isForwardTab ? wxNavigationKeyEvent::IsForward
: wxNavigationKeyEvent::IsBackward ) )
return;
break;
}
// If we remain in this cell, stop editing it if we were doing so.
DisableCellEditControl();
}
bool wxGrid::SetCurrentCell( const wxGridCellCoords& coords )
{
if ( SendEvent(wxEVT_GRID_SELECT_CELL, coords) == -1 )