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// *****************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
// *****************************************************************************
#include "command_box.h"
//#include <deque>
//#include <zen/i18n.h>
#include <algorithm>
//#include <zen/stl_tools.h>
#include <zen/utf.h>
#include <wx+/dc.h>
using namespace zen;
using namespace fff;
namespace
{
inline
wxString getSeparationLine() { return std::wstring(50, EM_DASH); } //no space between dashes!
}
CommandBox::CommandBox(wxWindow* parent,
wxWindowID id,
const wxString& value,
const wxPoint& pos,
const wxSize& size,
int n,
const wxString choices[],
long style,
const wxValidator& validator,
const wxString& name) :
wxComboBox(parent, id, value, pos, size, n, choices, style, validator, name)
{
//####################################
/*#*/ SetMinSize({dipToWxsize(150), -1}); //# workaround yet another wxWidgets bug: default minimum size is much too large for a wxComboBox
//####################################
Bind(wxEVT_KEY_DOWN, [this](wxKeyEvent& event) { onKeyEvent (event); });
Bind(wxEVT_LEFT_DOWN, [this](wxMouseEvent& event) { onUpdateList(event); });
Bind(wxEVT_COMMAND_COMBOBOX_SELECTED, [this](wxCommandEvent& event) { onSelection (event); });
Bind(wxEVT_MOUSEWHEEL, [] (wxMouseEvent& event) {}); //swallow! this gives confusing UI feedback anyway
}
void CommandBox::addItemHistory()
{
const Zstring newCommand = trimCpy(getValue());
if (newCommand == utfTo<Zstring>(getSeparationLine()) || //do not add sep. line
newCommand.empty())
return;
//do not add built-in commands to history
for (const auto& [description, cmd] : defaultCommands_)
if (newCommand == utfTo<Zstring>(description) ||
equalNoCase(newCommand, cmd))
return;
std::erase_if(history_, [&](const Zstring& item) { return equalNoCase(newCommand, item); });
history_.insert(history_.begin(), newCommand);
if (history_.size() > historyMax_)
history_.resize(historyMax_);
}
Zstring CommandBox::getValue() const
{
return utfTo<Zstring>(trimCpy(GetValue()));
}
void CommandBox::setValue(const Zstring& value)
{
setValueAndUpdateList(trimCpy(utfTo<wxString>(value)));
}
//set value and update list are technically entangled: see potential bug description below
void CommandBox::setValueAndUpdateList(const wxString& value)
{
//it may be a little lame to update the list on each mouse-button click, but it should be working and we dont't have to manipulate wxComboBox internals
std::vector<wxString> items;
//1. built in commands
for (const auto& [description, cmd] : defaultCommands_)
items.push_back(description);
//2. history elements
auto histSorted = history_;
std::sort(histSorted.begin(), histSorted.end(), LessNaturalSort() /*even on Linux*/);
if (!items.empty() && !histSorted.empty())
items.push_back(getSeparationLine());
for (const Zstring& hist : histSorted)
items.push_back(utfTo<wxString>(hist));
//attention: if the target value is not part of the dropdown list, SetValue() will look for a string that *starts with* this value:
//e.g. if the dropdown list contains "222" SetValue("22") will erroneously set and select "222" instead, while "111" would be set correctly!
// -> by design on Windows!
if (std::find(items.begin(), items.end(), value) == items.end())
{
if (!items.empty() && !value.empty())
items.insert(items.begin(), {value, getSeparationLine()});
else
items.insert(items.begin(), {value});
}
//this->Clear(); -> NO! emits yet another wxEVT_COMMAND_TEXT_UPDATED!!!
wxItemContainer::Clear(); //suffices to clear the selection items only!
this->Append(items); //expensive as fuck! => only call when absolutely needed!
//this->SetSelection(wxNOT_FOUND); //don't select anything
ChangeValue(value); //preserve main text!
}
void CommandBox::onSelection(wxCommandEvent& event)
{
//we cannot replace built-in commands at this position in call stack, so defer to a later time!
CallAfter([&] { onValidateSelection(); });
event.Skip();
}
void CommandBox::onValidateSelection()
{
const wxString value = GetValue();
if (value == getSeparationLine())
return setValueAndUpdateList(wxString());
for (const auto& [description, cmd] : defaultCommands_)
if (description == value)
return setValueAndUpdateList(utfTo<wxString>(cmd)); //replace GUI name by actual command string
}
void CommandBox::onUpdateList(wxEvent& event)
{
setValue(getValue());
event.Skip();
}
void CommandBox::onKeyEvent(wxKeyEvent& event)
{
const int keyCode = event.GetKeyCode();
switch (keyCode)
{
case WXK_DELETE:
case WXK_NUMPAD_DELETE:
{
//try to delete the currently selected config history item
int pos = this->GetCurrentSelection();
if (0 <= pos && pos < static_cast<int>(this->GetCount()) &&
//what a mess...:
(GetValue() != GetString(pos) || //avoid problems when a character shall be deleted instead of list item
GetValue().empty())) //exception: always allow removing empty entry
{
const auto selValue = utfTo<Zstring>(GetString(pos));
if (std::find(history_.begin(), history_.end(), selValue) != history_.end()) //only history elements may be deleted
{
//save old (selected) value: deletion seems to have influence on this
const wxString currentVal = this->GetValue();
//this->SetSelection(wxNOT_FOUND);
//delete selected row
std::erase(history_, selValue);
SetString(pos, wxString()); //in contrast to Delete(), this one does not kill the drop-down list and gives a nice visual feedback!
//Delete(pos);
//(re-)set value
SetValue(currentVal);
}
return; //eat up key event
}
}
break;
case WXK_UP:
case WXK_NUMPAD_UP:
case WXK_DOWN:
case WXK_NUMPAD_DOWN:
case WXK_PAGEUP:
case WXK_NUMPAD_PAGEUP:
case WXK_PAGEDOWN:
case WXK_NUMPAD_PAGEDOWN:
return; //swallow -> using these keys gives a weird effect due to this weird control
}
event.Skip();
}
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