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#pragma once
#include <functional>
#include <wx/textctrl.h>
namespace wxutil
{
/**
* A special entry field keeping track of focus events and editing status.
* The attached callbacks ("apply" and "cancel") are automatically invoked
* where appropriate (losing focus, pressing enter or escape, etc.)
*/
class NonModalEntry :
public wxTextCtrl
{
public:
typedef std::function<void()> ApplyCallback;
typedef std::function<void()> CancelCallback;
typedef std::function<void()> ChangedCallback;
private:
bool _editing;
ApplyCallback _apply;
CancelCallback _cancel;
ChangedCallback _changed;
bool _giveUpFocusOnApplyOrCancel;
public:
NonModalEntry(wxWindow* parent, const ApplyCallback& apply, const CancelCallback& cancel,
const ChangedCallback& changed = 0,
bool giveUpFocusOnApplyOrCancel = true) :
wxTextCtrl(parent, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, wxTE_PROCESS_ENTER),
_editing(false),
_apply(apply),
_cancel(cancel),
_changed(changed),
_giveUpFocusOnApplyOrCancel(giveUpFocusOnApplyOrCancel)
{
Connect(wxEVT_SET_FOCUS, wxFocusEventHandler(NonModalEntry::onGetFocus), NULL, this);
Connect(wxEVT_KILL_FOCUS, wxFocusEventHandler(NonModalEntry::onLoseFocus), NULL, this);
Connect(wxEVT_TEXT, wxCommandEventHandler(NonModalEntry::onTextChanged), NULL, this);
Connect(wxEVT_KEY_DOWN, wxKeyEventHandler(NonModalEntry::onTextEntryKeyPressed), NULL, this);
}
protected:
void onGetFocus(wxFocusEvent& ev)
{
_editing = false;
ev.Skip();
}
void onLoseFocus(wxFocusEvent& ev)
{
if (_editing && IsShown())
{
if (_apply)
{
_apply();
}
}
_editing = false;
ev.Skip();
}
void onTextChanged(wxCommandEvent& ev)
{
_editing = true;
if (IsShown())
{
if (_changed)
{
_changed();
}
}
ev.Skip();
}
void onTextEntryKeyPressed(wxKeyEvent& ev)
{
if (ev.GetKeyCode() == WXK_RETURN || ev.GetKeyCode() == WXK_ESCAPE)
{
if (ev.GetKeyCode() == WXK_RETURN)
{
if (_apply)
{
_apply();
}
}
else
{
if (_cancel)
{
_cancel();
}
}
_editing = false;
if (_giveUpFocusOnApplyOrCancel)
{
wxWindow* parent = GetParent();
while (parent != NULL && parent->GetParent() != NULL)
{
parent = parent->GetParent();
}
if (parent != NULL)
{
parent->SetFocus();
}
}
return;
}
ev.Skip();
}
};
} // namespace
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