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/* Copyright (C) 2011 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "DraggableListCtrl.h"
#include "General/AtlasWindowCommandProc.h"
#include "DraggableListCtrlCommands.h"
const int ScrollSpeed = 8; // when dragging off the top or bottom of the control
DraggableListCtrl::DraggableListCtrl(wxWindow *parent,
wxWindowID id,
const wxPoint& pos,
const wxSize& size,
long style,
const wxValidator& validator,
const wxString& name)
: EditableListCtrl(parent, id, pos, size, style, validator, name)
, m_DragSource(0)
{
}
// TODO:
// * Dragging of multiple selections?
void DraggableListCtrl::OnBeginDrag(wxListEvent& WXUNUSED(event))
{
CaptureMouse();
SetFocus();
}
void DraggableListCtrl::OnEndDrag()
{
AtlasWindowCommandProc* commandProc = AtlasWindowCommandProc::GetFromParentFrame(this);
commandProc->FinaliseLastCommand();
SetSelection(m_DragSource);
//commandProc->Store(new DragCommand(this, m_InitialDragSource, m_DragSource));
}
void DraggableListCtrl::OnItemSelected(wxListEvent& event)
{
// Don't respond while in drag-mode - only the initial selection
// (when starting the drag operation) should be handled
if (! HasCapture())
{
// Remember which item is being dragged
m_DragSource = event.GetIndex();
// Make sure this listctrl is in focus
SetFocus();
}
}
void DraggableListCtrl::OnMouseCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
{
// Mouse capture lost due to "external" event, like a dialog box or alt-tabbing
// (this is currently a Windows only event and failure to handle it will lead
// to an assertion failure in debug builds)
OnEndDrag();
}
void DraggableListCtrl::OnMouseEvent(wxMouseEvent& event)
{
// Only care when in drag-mode
if (! HasCapture())
{
event.Skip();
return;
}
if (event.LeftUp())
{
// Finished dragging; stop responding to mouse motion
OnEndDrag();
ReleaseMouse();
}
else if (event.Dragging())
{
// Find which item the mouse is now over
int flags;
long dragTarget = HitTest(event.GetPosition(), flags);
if (dragTarget == wxNOT_FOUND)
{
// Not over an item. Scroll the view up/down if the mouse is
// outside the listctrl.
if (flags & wxLIST_HITTEST_ABOVE)
ScrollList(0, -ScrollSpeed);
else if (flags & wxLIST_HITTEST_BELOW)
ScrollList(0, ScrollSpeed);
}
else
if (flags & wxLIST_HITTEST_ONITEM && dragTarget != m_DragSource)
{
// Move the source item to the location under the mouse
AtlasWindowCommandProc* commandProc = AtlasWindowCommandProc::GetFromParentFrame(this);
commandProc->Submit(new DragCommand(this, m_DragSource, dragTarget));
// and remember that the source item is now in a different place
m_DragSource = dragTarget;
}
}
else
// Some other kind of event which we're not interested in - ignore it
event.Skip();
}
void DraggableListCtrl::OnChar(wxKeyEvent& event)
{
// Don't respond to the keyboard if the user is dragging things (else
// the undo system might get slightly confused)
if (HasCapture())
return;
if (event.GetKeyCode() == WXK_DELETE)
{
long item = GetNextItem(-1,
wxLIST_NEXT_ALL,
wxLIST_STATE_SELECTED);
if (item != -1)
{
AtlasWindowCommandProc::GetFromParentFrame(this)->Submit(
new DeleteCommand(this, item)
);
UpdateDisplay();
}
}
else
{
event.Skip();
}
}
BEGIN_EVENT_TABLE(DraggableListCtrl, EditableListCtrl)
EVT_LIST_BEGIN_DRAG(wxID_ANY, DraggableListCtrl::OnBeginDrag)
EVT_LIST_ITEM_SELECTED(wxID_ANY, DraggableListCtrl::OnItemSelected)
EVT_MOTION(DraggableListCtrl::OnMouseEvent)
EVT_LEFT_UP(DraggableListCtrl::OnMouseEvent)
EVT_CHAR(DraggableListCtrl::OnChar)
EVT_MOUSE_CAPTURE_LOST(DraggableListCtrl::OnMouseCaptureLost)
END_EVENT_TABLE()
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