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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
// **************************************************************************
#include "folder_history_box.h"
#include <list>
#include <zen/scope_guard.h>
#include <wx+/string_conv.h>
#include "../lib/resolve_path.h"
#ifdef ZEN_LINUX
#include <gtk/gtk.h>
#endif
using namespace zen;
FolderHistoryBox::FolderHistoryBox(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(wxSize(150, -1)); //## workaround yet another wxWidgets bug: default minimum size is much too large for a wxComboBox
//#####################################
Connect(wxEVT_KEY_DOWN, wxKeyEventHandler (FolderHistoryBox::OnKeyEvent ), nullptr, this);
warn_static("mac")
warn_static("linux")
#if defined ZEN_WIN
//on Win, this mouse click event only fires, when clicking on the small down arrow, NOT when clicking on the text field
//thanks to wxWidgets' non-portability it's exactly the converse on Linux!
Connect(wxEVT_LEFT_DOWN, wxEventHandler(FolderHistoryBox::OnRequireHistoryUpdate), nullptr, this);
#elif defined ZEN_LINUX || defined ZEN_MAC
/*
we can't attach to wxEVT_COMMAND_TEXT_UPDATED, since setValueAndUpdateList() will implicitly emit wxEVT_COMMAND_TEXT_UPDATED again when calling Clear()!
=> Crash on Suse/X11/wxWidgets 2.9.4 on startup (setting a flag to guard against recursion does not work, still crash)
On OS attaching to wxEVT_LEFT_DOWN leads to occasional crashes, especially when double-clicking
*/
#endif
#ifdef ZEN_LINUX
//file drag and drop directly into the text control unhelpfully inserts in format "file://..<cr><nl>"
//1. this format's implementation is a mess: http://www.lephpfacile.com/manuel-php-gtk/tutorials.filednd.urilist.php
//2. even if we handle "drag-data-received" for "text/uri-list" this doesn't consider logic in dirname.cpp
//=> disable all drop events on the text control (disables text drop, too, but not a big loss)
//=> all drops are nicely propagated as regular file drop events like they should have been in the first place!
if (GtkWidget* widget = GetConnectWidget())
::gtk_drag_dest_unset(widget);
#endif
}
void FolderHistoryBox::OnRequireHistoryUpdate(wxEvent& event)
{
setValueAndUpdateList(GetValue());
event.Skip();
}
//set value and update list are technically entangled: see potential bug description below
void FolderHistoryBox::setValueAndUpdateList(const wxString& dirname)
{
//populate selection list....
std::vector<wxString> dirList;
{
//add some aliases to allow user changing to volume name and back, if possible
std::vector<Zstring> aliases = getDirectoryAliases(toZ(dirname)); //may block when resolving [<volume name>]
std::transform(aliases.begin(), aliases.end(), std::back_inserter(dirList), [](const Zstring& str) { return utfCvrtTo<wxString>(str); });
}
if (sharedHistory_.get())
{
std::vector<Zstring> tmp = sharedHistory_->getList();
std::sort(tmp.begin(), tmp.end(), LessFilename());
if (!dirList.empty() && !tmp.empty())
dirList.push_back(FolderHistory::separationLine());
std::transform(tmp.begin(), tmp.end(), std::back_inserter(dirList), [](const Zstring& str) { return utfCvrtTo<wxString>(str); });
}
//###########################################################################################
//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(dirList.begin(), dirList.end(), dirname) == dirList.end())
dirList.insert(dirList.begin(), dirname);
Clear(); //emits yet another wxEVT_COMMAND_TEXT_UPDATED on Suse/X11/wxWidgets 2.9.4!!!
std::for_each(dirList.begin(), dirList.end(), [&](const wxString& dir) { this->Append(dir); });
//this->SetSelection(wxNOT_FOUND); //don't select anything
this->SetValue(dirname); //preserve main text!
}
void FolderHistoryBox::OnKeyEvent(wxKeyEvent& event)
{
const int keyCode = event.GetKeyCode();
if (keyCode == WXK_DELETE || keyCode == 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() == wxEmptyString)) //exception: always allow removing empty entry
{
//save old (selected) value: deletion seems to have influence on this
const wxString currentVal = this->GetValue();
//this->SetSelection(wxNOT_FOUND);
//delete selected row
if (sharedHistory_.get())
sharedHistory_->delItem(toZ(GetString(pos)));
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
this->SetValue(currentVal);
//eat up key event
return;
}
}
event.Skip();
}
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