144 lines
3.6 KiB
C++
144 lines
3.6 KiB
C++
#include "stdafx.h"
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#include "DraggableListCtrl.h"
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#include "AtlasWindowCommandProc.h"
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#include "DraggableListCtrlCommands.h"
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//DEFINE_EVENT_TYPE(wxEVT_LISTCTRL_UPDATED);
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const int ScrollSpeed = 8; // when dragging off the top or bottom of the control
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DraggableListCtrl::DraggableListCtrl(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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long style,
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const wxValidator& validator,
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const wxString& name)
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: EditableListCtrl(parent, id, pos, size, style, validator, name)
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, m_DragSource(0)
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{
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}
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// TODO:
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// * Dragging of multiple selections?
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void DraggableListCtrl::OnBeginDrag(wxListEvent& WXUNUSED(event))
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{
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CaptureMouse();
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SetFocus();
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}
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void DraggableListCtrl::OnEndDrag()
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{
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AtlasWindowCommandProc* commandProc = AtlasWindowCommandProc::GetFromParentFrame(this);
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commandProc->FinaliseLastCommand();
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SetSelection(m_DragSource);
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//commandProc->Store(new DragCommand(this, m_InitialDragSource, m_DragSource));
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}
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void DraggableListCtrl::OnItemSelected(wxListEvent& event)
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{
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// Don't respond while in drag-mode - only the initial selection
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// (when starting the drag operation) should be handled
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if (! HasCapture())
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{
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// Remember which item is being dragged
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m_DragSource = event.GetIndex();
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// Make sure this listctrl is in focus
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SetFocus();
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}
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}
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void DraggableListCtrl::OnMouseCaptureChanged(wxMouseCaptureChangedEvent& WXUNUSED(event))
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{
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OnEndDrag();
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}
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void DraggableListCtrl::OnMouseEvent(wxMouseEvent& event)
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{
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// Only care when in drag-mode
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if (! HasCapture())
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{
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event.Skip();
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return;
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}
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if (event.LeftUp())
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{
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// Finished dragging; stop responding to mouse motion
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ReleaseMouse();
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}
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else if (event.Dragging())
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{
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// Find which item the mouse is now over
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int flags;
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long dragTarget = HitTest(event.GetPosition(), flags);
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if (dragTarget == wxNOT_FOUND)
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{
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// Not over an item. Scroll the view up/down if the mouse is
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// outside the listctrl.
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if (flags & wxLIST_HITTEST_ABOVE)
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ScrollList(0, -ScrollSpeed);
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else if (flags & wxLIST_HITTEST_BELOW)
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ScrollList(0, ScrollSpeed);
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}
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else
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if (flags & wxLIST_HITTEST_ONITEM && dragTarget != m_DragSource)
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{
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// Move the source item to the location under the mouse
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AtlasWindowCommandProc* commandProc = AtlasWindowCommandProc::GetFromParentFrame(this);
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commandProc->Submit(new DragCommand(this, m_DragSource, dragTarget));
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// and remember that the source item is now in a different place
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m_DragSource = dragTarget;
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}
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}
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else
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// Some other kind of event which we're not interested in - ignore it
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event.Skip();
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}
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void DraggableListCtrl::OnChar(wxKeyEvent& event)
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{
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// Don't respond to the keyboard if the user is dragging things (else
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// the undo system might get slightly confused)
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if (HasCapture())
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return;
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if (event.GetKeyCode() == WXK_DELETE)
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{
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long item = GetNextItem(-1,
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wxLIST_NEXT_ALL,
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wxLIST_STATE_SELECTED);
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if (item != -1)
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{
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AtlasWindowCommandProc::GetFromParentFrame(this)->Submit(
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new DeleteCommand(this, item)
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);
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UpdateDisplay();
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}
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}
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else
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{
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event.Skip();
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}
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}
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BEGIN_EVENT_TABLE(DraggableListCtrl, EditableListCtrl)
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EVT_LIST_BEGIN_DRAG(wxID_ANY, DraggableListCtrl::OnBeginDrag)
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EVT_LIST_ITEM_SELECTED(wxID_ANY, DraggableListCtrl::OnItemSelected)
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EVT_MOTION(DraggableListCtrl::OnMouseEvent)
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EVT_LEFT_UP(DraggableListCtrl::OnMouseEvent)
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EVT_CHAR(DraggableListCtrl::OnChar)
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EVT_MOUSE_CAPTURE_CHANGED(DraggableListCtrl::OnMouseCaptureChanged)
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END_EVENT_TABLE()
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