mirror of
https://github.com/wpilibsuite/allwpilib
synced 2026-06-22 01:11:42 +00:00
1367 lines
43 KiB
C++
1367 lines
43 KiB
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) 2020 FIRST. All Rights Reserved. */
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/* Open Source Software - may be modified and shared by FRC teams. The code */
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/* must be accompanied by the FIRST BSD license file in the root directory of */
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/* the project. */
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/*----------------------------------------------------------------------------*/
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//
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// Portable File Dialogs
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//
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// Copyright © 2018—2020 Sam Hocevar <sam@hocevar.net>
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//
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// This library is free software. It comes without any warranty, to
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// the extent permitted by applicable law. You can redistribute it
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// and/or modify it under the terms of the Do What the **** You Want
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// to Public License, Version 2, as published by the WTFPL Task Force.
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// See http://www.wtfpl.net/ for more details.
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//
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#include "portable-file-dialogs.h"
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#if _WIN32
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#ifndef WIN32_LEAN_AND_MEAN
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# define WIN32_LEAN_AND_MEAN 1
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#endif
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#include <Windows.h>
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#include <commdlg.h>
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#include <ShlObj.h>
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#include <ShObjIdl.h> // IFileDialog
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#include <shellapi.h>
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#include <strsafe.h>
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#include <future> // std::async
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#elif __EMSCRIPTEN__
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#include <emscripten.h>
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#else
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#ifndef _POSIX_C_SOURCE
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# define _POSIX_C_SOURCE 2 // for popen()
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#endif
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#include <cstdio> // popen()
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#include <cstdlib> // std::getenv()
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#include <fcntl.h> // fcntl()
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#include <unistd.h> // read(), pipe(), dup2()
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#include <csignal> // ::kill, std::signal
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#include <sys/wait.h> // waitpid()
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#endif
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#ifdef _WIN32
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#include <set>
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#endif
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#include <iostream>
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#include <regex>
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#include <thread>
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#include <chrono>
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//
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// Below this are all the method implementations.
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//
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namespace pfd
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{
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namespace internal
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{
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class platform
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{
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public:
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#if _WIN32
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// Helper class around LoadLibraryA() and GetProcAddress() with some safety
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class dll
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{
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public:
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explicit dll(std::string const &name);
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~dll();
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template<typename T> class proc
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{
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public:
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proc(dll const &lib, std::string const &sym)
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: m_proc(reinterpret_cast<T *>(::GetProcAddress(lib.handle, sym.c_str())))
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{}
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operator bool() const { return m_proc != nullptr; }
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operator T *() const { return m_proc; }
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private:
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T *m_proc;
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};
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private:
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HMODULE handle;
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};
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// Helper class around CreateActCtx() and ActivateActCtx()
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class new_style_context
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{
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public:
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new_style_context();
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~new_style_context();
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private:
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HANDLE create();
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ULONG_PTR m_cookie = 0;
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};
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#endif
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};
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class executor
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{
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friend class dialog;
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public:
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// High level function to get the result of a command
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std::string result(int *exit_code = nullptr);
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// High level function to abort
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bool kill();
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#if _WIN32
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void start_func(std::function<std::string(int *)> const &fun);
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static BOOL CALLBACK enum_windows_callback(HWND hwnd, LPARAM lParam);
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#elif __EMSCRIPTEN__
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void start(int exit_code);
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#else
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void start_process(std::vector<std::string> const &command);
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#endif
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~executor();
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protected:
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bool ready(int timeout = default_wait_timeout);
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void stop();
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private:
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bool m_running = false;
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std::string m_stdout;
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int m_exit_code = -1;
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#if _WIN32
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std::future<std::string> m_future;
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std::set<HWND> m_windows;
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std::condition_variable m_cond;
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std::mutex m_mutex;
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DWORD m_tid;
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#elif __EMSCRIPTEN__ || __NX__
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// FIXME: do something
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#else
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pid_t m_pid = 0;
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int m_fd = -1;
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#endif
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};
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// internal free functions implementations
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#if _WIN32
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static inline std::wstring str2wstr(std::string const &str)
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{
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int len = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), (int)str.size(), nullptr, 0);
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std::wstring ret(len, '\0');
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MultiByteToWideChar(CP_UTF8, 0, str.c_str(), (int)str.size(), (LPWSTR)ret.data(), (int)ret.size());
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return ret;
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}
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static inline std::string wstr2str(std::wstring const &str)
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{
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int len = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), (int)str.size(), nullptr, 0, nullptr, nullptr);
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std::string ret(len, '\0');
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WideCharToMultiByte(CP_UTF8, 0, str.c_str(), (int)str.size(), (LPSTR)ret.data(), (int)ret.size(), nullptr, nullptr);
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return ret;
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}
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static inline bool is_vista()
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{
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OSVERSIONINFOEXW osvi;
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memset(&osvi, 0, sizeof(osvi));
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DWORDLONG const mask = VerSetConditionMask(
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VerSetConditionMask(
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VerSetConditionMask(
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0, VER_MAJORVERSION, VER_GREATER_EQUAL),
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VER_MINORVERSION, VER_GREATER_EQUAL),
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VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
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osvi.dwOSVersionInfoSize = sizeof(osvi);
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osvi.dwMajorVersion = HIBYTE(_WIN32_WINNT_VISTA);
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osvi.dwMinorVersion = LOBYTE(_WIN32_WINNT_VISTA);
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osvi.wServicePackMajor = 0;
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return VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, mask) != FALSE;
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}
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#endif
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// This is necessary until C++20 which will have std::string::ends_with() etc.
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static inline bool ends_with(std::string const &str, std::string const &suffix)
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{
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return suffix.size() <= str.size() &&
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str.compare(str.size() - suffix.size(), suffix.size(), suffix) == 0;
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}
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static inline bool starts_with(std::string const &str, std::string const &prefix)
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{
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return prefix.size() <= str.size() &&
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str.compare(0, prefix.size(), prefix) == 0;
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}
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} // namespace internal
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// settings implementation
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settings::settings(bool resync)
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{
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flags(flag::is_scanned) &= !resync;
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if (flags(flag::is_scanned))
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return;
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#if _WIN32
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flags(flag::is_vista) = internal::is_vista();
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#elif !__APPLE__
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flags(flag::has_zenity) = check_program("zenity");
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flags(flag::has_matedialog) = check_program("matedialog");
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flags(flag::has_qarma) = check_program("qarma");
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flags(flag::has_kdialog) = check_program("kdialog");
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// If multiple helpers are available, try to default to the best one
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if (flags(flag::has_zenity) && flags(flag::has_kdialog))
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{
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auto desktop_name = std::getenv("XDG_SESSION_DESKTOP");
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if (desktop_name && desktop_name == std::string("gnome"))
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flags(flag::has_kdialog) = false;
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else if (desktop_name && desktop_name == std::string("KDE"))
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flags(flag::has_zenity) = false;
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}
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#endif
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flags(flag::is_scanned) = true;
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}
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bool settings::available()
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{
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#if _WIN32
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return true;
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#elif __APPLE__
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return true;
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#else
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settings tmp;
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return tmp.flags(flag::has_zenity) ||
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tmp.flags(flag::has_matedialog) ||
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tmp.flags(flag::has_qarma) ||
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tmp.flags(flag::has_kdialog);
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#endif
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}
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void settings::verbose(bool value)
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{
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settings().flags(flag::is_verbose) = value;
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}
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void settings::rescan()
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{
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settings(/* resync = */ true);
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}
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// Check whether a program is present using “which”.
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bool settings::check_program(std::string const &program)
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{
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#if _WIN32
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(void)program;
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return false;
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#elif __EMSCRIPTEN__
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(void)program;
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return false;
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#else
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int exit_code = -1;
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internal::executor async;
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async.start_process({"/bin/sh", "-c", "which " + program});
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async.result(&exit_code);
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return exit_code == 0;
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#endif
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}
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bool const &settings::flags(flag in_flag) const
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{
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static bool flags[size_t(flag::max_flag)];
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return flags[size_t(in_flag)];
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}
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bool &settings::flags(flag in_flag)
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{
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return const_cast<bool &>(static_cast<settings const *>(this)->flags(in_flag));
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}
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// executor implementation
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std::string internal::executor::result(int *exit_code /* = nullptr */)
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{
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stop();
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if (exit_code)
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*exit_code = m_exit_code;
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return m_stdout;
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}
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bool internal::executor::kill()
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{
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#if _WIN32
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if (m_future.valid())
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{
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// Close all windows that weren’t open when we started the future
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auto previous_windows = m_windows;
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EnumWindows(&enum_windows_callback, (LPARAM)this);
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for (auto hwnd : m_windows)
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if (previous_windows.find(hwnd) == previous_windows.end())
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SendMessage(hwnd, WM_CLOSE, 0, 0);
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}
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#elif __EMSCRIPTEN__ || __NX__
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// FIXME: do something
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(void)timeout;
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return false; // cannot kill
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#else
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::kill(m_pid, SIGKILL);
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#endif
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stop();
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return true;
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}
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#if _WIN32
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BOOL CALLBACK internal::executor::enum_windows_callback(HWND hwnd, LPARAM lParam)
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{
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auto that = (executor *)lParam;
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DWORD pid;
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auto tid = GetWindowThreadProcessId(hwnd, &pid);
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if (tid == that->m_tid)
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that->m_windows.insert(hwnd);
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return TRUE;
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}
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#endif
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#if _WIN32
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void internal::executor::start_func(std::function<std::string(int *)> const &fun)
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{
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stop();
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auto trampoline = [fun, this]()
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{
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// Save our thread id so that the caller can cancel us
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m_tid = GetCurrentThreadId();
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EnumWindows(&enum_windows_callback, (LPARAM)this);
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m_cond.notify_all();
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return fun(&m_exit_code);
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};
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std::unique_lock<std::mutex> lock(m_mutex);
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m_future = std::async(std::launch::async, trampoline);
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m_cond.wait(lock);
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m_running = true;
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}
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#elif __EMSCRIPTEN__
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void internal::executor::start(int exit_code)
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{
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m_exit_code = exit_code;
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}
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#else
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void internal::executor::start_process(std::vector<std::string> const &command)
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{
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stop();
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m_stdout.clear();
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m_exit_code = -1;
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int in[2], out[2];
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if (pipe(in) != 0 || pipe(out) != 0)
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return;
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m_pid = fork();
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if (m_pid < 0)
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return;
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close(in[m_pid ? 0 : 1]);
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close(out[m_pid ? 1 : 0]);
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if (m_pid == 0)
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{
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dup2(in[0], STDIN_FILENO);
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dup2(out[1], STDOUT_FILENO);
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// Ignore stderr so that it doesn’t pollute the console (e.g. GTK+ errors from zenity)
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int fd = open("/dev/null", O_WRONLY);
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dup2(fd, STDERR_FILENO);
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close(fd);
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std::vector<char *> args;
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std::transform(command.cbegin(), command.cend(), std::back_inserter(args),
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[](std::string const &s) { return const_cast<char *>(s.c_str()); });
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args.push_back(nullptr); // null-terminate argv[]
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execvp(args[0], args.data());
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exit(1);
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}
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close(in[1]);
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m_fd = out[0];
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auto flags = fcntl(m_fd, F_GETFL);
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fcntl(m_fd, F_SETFL, flags | O_NONBLOCK);
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m_running = true;
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}
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#endif
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internal::executor::~executor()
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{
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stop();
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}
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bool internal::executor::ready(int timeout /* = default_wait_timeout */)
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{
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if (!m_running)
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return true;
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#if _WIN32
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if (m_future.valid())
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{
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auto status = m_future.wait_for(std::chrono::milliseconds(timeout));
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if (status != std::future_status::ready)
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{
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// On Windows, we need to run the message pump. If the async
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// thread uses a Windows API dialog, it may be attached to the
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// main thread and waiting for messages that only we can dispatch.
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MSG msg;
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while (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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return false;
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}
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m_stdout = m_future.get();
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}
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#elif __EMSCRIPTEN__ || __NX__
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// FIXME: do something
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(void)timeout;
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#else
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char buf[BUFSIZ];
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ssize_t received = read(m_fd, buf, BUFSIZ); // Flawfinder: ignore
|
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if (received > 0)
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{
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m_stdout += std::string(buf, received);
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return false;
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}
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|
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// Reap child process if it is dead. It is possible that the system has already reaped it
|
||
// (this happens when the calling application handles or ignores SIG_CHLD) and results in
|
||
// waitpid() failing with ECHILD. Otherwise we assume the child is running and we sleep for
|
||
// a little while.
|
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int status;
|
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pid_t child = waitpid(m_pid, &status, WNOHANG);
|
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if (child != m_pid && (child >= 0 || errno != ECHILD))
|
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{
|
||
// FIXME: this happens almost always at first iteration
|
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std::this_thread::sleep_for(std::chrono::milliseconds(timeout));
|
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return false;
|
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}
|
||
|
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close(m_fd);
|
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m_exit_code = WEXITSTATUS(status);
|
||
#endif
|
||
|
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m_running = false;
|
||
return true;
|
||
}
|
||
|
||
void internal::executor::stop()
|
||
{
|
||
// Loop until the user closes the dialog
|
||
while (!ready())
|
||
{}
|
||
}
|
||
|
||
// dll implementation
|
||
|
||
#if _WIN32
|
||
internal::platform::dll::dll(std::string const &name)
|
||
: handle(::LoadLibraryA(name.c_str()))
|
||
{}
|
||
|
||
internal::platform::dll::~dll()
|
||
{
|
||
if (handle)
|
||
::FreeLibrary(handle);
|
||
}
|
||
#endif // _WIN32
|
||
|
||
// new_style_context implementation
|
||
|
||
#if _WIN32
|
||
internal::platform::new_style_context::new_style_context()
|
||
{
|
||
// Only create one activation context for the whole app lifetime.
|
||
static HANDLE hctx = create();
|
||
|
||
if (hctx != INVALID_HANDLE_VALUE)
|
||
ActivateActCtx(hctx, &m_cookie);
|
||
}
|
||
|
||
internal::platform::new_style_context::~new_style_context()
|
||
{
|
||
DeactivateActCtx(0, m_cookie);
|
||
}
|
||
|
||
HANDLE internal::platform::new_style_context::create()
|
||
{
|
||
// This “hack” seems to be necessary for this code to work on windows XP.
|
||
// Without it, dialogs do not show and close immediately. GetError()
|
||
// returns 0 so I don’t know what causes this. I was not able to reproduce
|
||
// this behavior on Windows 7 and 10 but just in case, let it be here for
|
||
// those versions too.
|
||
// This hack is not required if other dialogs are used (they load comdlg32
|
||
// automatically), only if message boxes are used.
|
||
internal::platform::dll comdlg32("comdlg32.dll");
|
||
|
||
// Using approach as shown here: https://stackoverflow.com/a/10444161
|
||
UINT len = ::GetSystemDirectoryA(nullptr, 0);
|
||
std::string sys_dir(len, '\0');
|
||
::GetSystemDirectoryA(&sys_dir[0], len);
|
||
|
||
ACTCTXA act_ctx =
|
||
{
|
||
// Do not set flag ACTCTX_FLAG_SET_PROCESS_DEFAULT, since it causes a
|
||
// crash with error “default context is already set”.
|
||
sizeof(act_ctx),
|
||
ACTCTX_FLAG_RESOURCE_NAME_VALID | ACTCTX_FLAG_ASSEMBLY_DIRECTORY_VALID,
|
||
"shell32.dll", 0, 0, sys_dir.c_str(), (LPCSTR)124,
|
||
};
|
||
|
||
return ::CreateActCtxA(&act_ctx);
|
||
}
|
||
#endif // _WIN32
|
||
|
||
// dialog implementation
|
||
|
||
bool internal::dialog::ready(int timeout /* = default_wait_timeout */) const
|
||
{
|
||
return m_async->ready(timeout);
|
||
}
|
||
|
||
bool internal::dialog::kill() const
|
||
{
|
||
return m_async->kill();
|
||
}
|
||
|
||
internal::dialog::dialog()
|
||
: m_async(std::make_shared<executor>())
|
||
{
|
||
}
|
||
|
||
std::vector<std::string> internal::dialog::desktop_helper() const
|
||
{
|
||
#if __APPLE__
|
||
return { "osascript" };
|
||
#else
|
||
return { flags(flag::has_zenity) ? "zenity"
|
||
: flags(flag::has_matedialog) ? "matedialog"
|
||
: flags(flag::has_qarma) ? "qarma"
|
||
: flags(flag::has_kdialog) ? "kdialog"
|
||
: "echo" };
|
||
#endif
|
||
}
|
||
|
||
std::string internal::dialog::buttons_to_name(choice _choice)
|
||
{
|
||
switch (_choice)
|
||
{
|
||
case choice::ok_cancel: return "okcancel";
|
||
case choice::yes_no: return "yesno";
|
||
case choice::yes_no_cancel: return "yesnocancel";
|
||
case choice::retry_cancel: return "retrycancel";
|
||
case choice::abort_retry_ignore: return "abortretryignore";
|
||
/* case choice::ok: */ default: return "ok";
|
||
}
|
||
}
|
||
|
||
std::string internal::dialog::get_icon_name(icon _icon)
|
||
{
|
||
switch (_icon)
|
||
{
|
||
case icon::warning: return "warning";
|
||
case icon::error: return "error";
|
||
case icon::question: return "question";
|
||
// Zenity wants "information" but WinForms wants "info"
|
||
/* case icon::info: */ default:
|
||
#if _WIN32
|
||
return "info";
|
||
#else
|
||
return "information";
|
||
#endif
|
||
}
|
||
}
|
||
|
||
// THis is only used for debugging purposes
|
||
std::ostream& operator <<(std::ostream &s, std::vector<std::string> const &v)
|
||
{
|
||
int not_first = 0;
|
||
for (auto &e : v)
|
||
s << (not_first++ ? " " : "") << e;
|
||
return s;
|
||
}
|
||
|
||
// Properly quote a string for Powershell: replace ' or " with '' or ""
|
||
// FIXME: we should probably get rid of newlines!
|
||
// FIXME: the \" sequence seems unsafe, too!
|
||
// XXX: this is no longer used but I would like to keep it around just in case
|
||
std::string internal::dialog::powershell_quote(std::string const &str) const
|
||
{
|
||
return "'" + std::regex_replace(str, std::regex("['\"]"), "$&$&") + "'";
|
||
}
|
||
|
||
// Properly quote a string for osascript: replace \ or " with \\ or \"
|
||
// XXX: this also used to replace ' with \' when popen was used, but it would be
|
||
// smarter to do shell_quote(osascript_quote(...)) if this is needed again.
|
||
std::string internal::dialog::osascript_quote(std::string const &str) const
|
||
{
|
||
return "\"" + std::regex_replace(str, std::regex("[\\\\\"]"), "\\$&") + "\"";
|
||
}
|
||
|
||
// Properly quote a string for the shell: just replace ' with '\''
|
||
// XXX: this is no longer used but I would like to keep it around just in case
|
||
std::string internal::dialog::shell_quote(std::string const &str) const
|
||
{
|
||
return "'" + std::regex_replace(str, std::regex("'"), "'\\''") + "'";
|
||
}
|
||
|
||
// file_dialog implementation
|
||
|
||
class internal::file_dialog::Impl {
|
||
public:
|
||
#if _WIN32
|
||
static int CALLBACK bffcallback(HWND hwnd, UINT uMsg, LPARAM, LPARAM pData);
|
||
std::string select_folder_vista(IFileDialog *ifd, bool force_path);
|
||
|
||
std::wstring m_wtitle;
|
||
std::wstring m_wdefault_path;
|
||
|
||
std::vector<std::string> m_vector_result;
|
||
#endif
|
||
};
|
||
|
||
internal::file_dialog::file_dialog(type in_type,
|
||
std::string const &title,
|
||
std::string const &default_path /* = "" */,
|
||
std::vector<std::string> const &filters /* = {} */,
|
||
opt options /* = opt::none */)
|
||
: m_impl(std::make_shared<Impl>())
|
||
{
|
||
#if _WIN32
|
||
std::string filter_list;
|
||
std::regex whitespace(" *");
|
||
for (size_t i = 0; i + 1 < filters.size(); i += 2)
|
||
{
|
||
filter_list += filters[i] + '\0';
|
||
filter_list += std::regex_replace(filters[i + 1], whitespace, ";") + '\0';
|
||
}
|
||
filter_list += '\0';
|
||
|
||
m_async->start_func([this, in_type, title, default_path, filter_list,
|
||
options](int *exit_code) -> std::string
|
||
{
|
||
(void)exit_code;
|
||
m_impl->m_wtitle = internal::str2wstr(title);
|
||
m_impl->m_wdefault_path = internal::str2wstr(default_path);
|
||
auto wfilter_list = internal::str2wstr(filter_list);
|
||
|
||
// Folder selection uses a different method
|
||
if (in_type == type::folder)
|
||
{
|
||
internal::platform::dll ole32("ole32.dll");
|
||
|
||
auto status = internal::platform::dll::proc<HRESULT WINAPI (LPVOID, DWORD)>(ole32, "CoInitializeEx")
|
||
(nullptr, COINIT_APARTMENTTHREADED);
|
||
if (flags(flag::is_vista))
|
||
{
|
||
// On Vista and higher we should be able to use IFileDialog for folder selection
|
||
IFileDialog *ifd;
|
||
HRESULT hr = internal::platform::dll::proc<HRESULT WINAPI (REFCLSID, LPUNKNOWN, DWORD, REFIID, LPVOID *)>(ole32, "CoCreateInstance")
|
||
(CLSID_FileOpenDialog, nullptr, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&ifd));
|
||
|
||
// In case CoCreateInstance fails (which it should not), try legacy approach
|
||
if (SUCCEEDED(hr))
|
||
return m_impl->select_folder_vista(ifd, options & opt::force_path);
|
||
}
|
||
|
||
BROWSEINFOW bi;
|
||
memset(&bi, 0, sizeof(bi));
|
||
|
||
bi.lpfn = &Impl::bffcallback;
|
||
bi.lParam = (LPARAM)m_impl.get();
|
||
|
||
if (flags(flag::is_vista))
|
||
{
|
||
// This hangs on Windows XP, as reported here:
|
||
// https://github.com/samhocevar/portable-file-dialogs/pull/21
|
||
if (status == S_OK)
|
||
bi.ulFlags |= BIF_NEWDIALOGSTYLE;
|
||
bi.ulFlags |= BIF_EDITBOX;
|
||
bi.ulFlags |= BIF_STATUSTEXT;
|
||
}
|
||
|
||
auto *list = SHBrowseForFolderW(&bi);
|
||
std::string ret;
|
||
if (list)
|
||
{
|
||
auto buffer = new wchar_t[MAX_PATH];
|
||
SHGetPathFromIDListW(list, buffer);
|
||
internal::platform::dll::proc<void WINAPI (LPVOID)>(ole32, "CoTaskMemFree")(list);
|
||
ret = internal::wstr2str(buffer);
|
||
delete[] buffer;
|
||
}
|
||
if (status == S_OK)
|
||
internal::platform::dll::proc<void WINAPI ()>(ole32, "CoUninitialize")();
|
||
return ret;
|
||
}
|
||
|
||
OPENFILENAMEW ofn;
|
||
memset(&ofn, 0, sizeof(ofn));
|
||
ofn.lStructSize = sizeof(OPENFILENAMEW);
|
||
ofn.hwndOwner = GetActiveWindow();
|
||
|
||
ofn.lpstrFilter = wfilter_list.c_str();
|
||
|
||
auto woutput = std::wstring(MAX_PATH * 256, L'\0');
|
||
ofn.lpstrFile = (LPWSTR)woutput.data();
|
||
ofn.nMaxFile = (DWORD)woutput.size();
|
||
if (!m_impl->m_wdefault_path.empty())
|
||
{
|
||
// If a directory was provided, use it as the initial directory. If
|
||
// a valid path was provided, use it as the initial file. Otherwise,
|
||
// let the Windows API decide.
|
||
auto path_attr = GetFileAttributesW(m_impl->m_wdefault_path.c_str());
|
||
if (path_attr != INVALID_FILE_ATTRIBUTES && (path_attr & FILE_ATTRIBUTE_DIRECTORY))
|
||
ofn.lpstrInitialDir = m_impl->m_wdefault_path.c_str();
|
||
else if (m_impl->m_wdefault_path.size() <= woutput.size())
|
||
//second argument is size of buffer, not length of string
|
||
StringCchCopyW(ofn.lpstrFile, MAX_PATH*256+1, m_impl->m_wdefault_path.c_str());
|
||
else
|
||
{
|
||
ofn.lpstrFileTitle = (LPWSTR)m_impl->m_wdefault_path.data();
|
||
ofn.nMaxFileTitle = (DWORD)m_impl->m_wdefault_path.size();
|
||
}
|
||
}
|
||
ofn.lpstrTitle = m_impl->m_wtitle.c_str();
|
||
ofn.Flags = OFN_NOCHANGEDIR | OFN_EXPLORER;
|
||
|
||
internal::platform::dll comdlg32("comdlg32.dll");
|
||
|
||
if (in_type == type::save)
|
||
{
|
||
if (!(options & opt::force_overwrite))
|
||
ofn.Flags |= OFN_OVERWRITEPROMPT;
|
||
|
||
// using set context to apply new visual style (required for windows XP)
|
||
internal::platform::new_style_context ctx;
|
||
|
||
internal::platform::dll::proc<BOOL WINAPI (LPOPENFILENAMEW)> get_save_file_name(comdlg32, "GetSaveFileNameW");
|
||
if (get_save_file_name(&ofn) == 0)
|
||
return "";
|
||
return internal::wstr2str(woutput.c_str());
|
||
}
|
||
|
||
if (options & opt::multiselect)
|
||
ofn.Flags |= OFN_ALLOWMULTISELECT;
|
||
ofn.Flags |= OFN_PATHMUSTEXIST;
|
||
|
||
// using set context to apply new visual style (required for windows XP)
|
||
internal::platform::new_style_context ctx;
|
||
|
||
internal::platform::dll::proc<BOOL WINAPI (LPOPENFILENAMEW)> get_open_file_name(comdlg32, "GetOpenFileNameW");
|
||
if (get_open_file_name(&ofn) == 0)
|
||
return "";
|
||
|
||
std::string prefix;
|
||
for (wchar_t const *p = woutput.c_str(); *p; )
|
||
{
|
||
auto filename = internal::wstr2str(p);
|
||
p += filename.size();
|
||
// In multiselect mode, we advance p one step more and
|
||
// check for another filename. If there is one and the
|
||
// prefix is empty, it means we just read the prefix.
|
||
if ((options & opt::multiselect) && *++p && prefix.empty())
|
||
{
|
||
prefix = filename + "/";
|
||
continue;
|
||
}
|
||
|
||
m_impl->m_vector_result.push_back(prefix + filename);
|
||
}
|
||
|
||
return "";
|
||
});
|
||
#else
|
||
auto command = desktop_helper();
|
||
|
||
if (is_osascript())
|
||
{
|
||
std::string script = "set ret to choose";
|
||
switch (in_type)
|
||
{
|
||
case type::save:
|
||
script += " file name";
|
||
break;
|
||
case type::open: default:
|
||
script += " file";
|
||
if (options & opt::multiselect)
|
||
script += " with multiple selections allowed";
|
||
break;
|
||
case type::folder:
|
||
script += " folder";
|
||
break;
|
||
}
|
||
|
||
if (default_path.size())
|
||
script += " default location " + osascript_quote(default_path);
|
||
script += " with prompt " + osascript_quote(title);
|
||
|
||
if (in_type == type::open)
|
||
{
|
||
// Concatenate all user-provided filter patterns
|
||
std::string patterns;
|
||
for (size_t i = 0; i < filters.size() / 2; ++i)
|
||
patterns += " " + filters[2 * i + 1];
|
||
|
||
// Split the pattern list to check whether "*" is in there; if it
|
||
// is, we have to disable filters because there is no mechanism in
|
||
// OS X for the user to override the filter.
|
||
std::regex sep("\\s+");
|
||
std::string filter_list;
|
||
bool has_filter = true;
|
||
std::sregex_token_iterator iter(patterns.begin(), patterns.end(), sep, -1);
|
||
std::sregex_token_iterator end;
|
||
for ( ; iter != end; ++iter)
|
||
{
|
||
auto pat = iter->str();
|
||
if (pat == "*" || pat == "*.*")
|
||
has_filter = false;
|
||
else if (internal::starts_with(pat, "*."))
|
||
filter_list += (filter_list.size() == 0 ? "" : ",") +
|
||
osascript_quote(pat.substr(2, pat.size() - 2));
|
||
}
|
||
if (has_filter && filter_list.size() > 0)
|
||
script += " of type {" + filter_list + "}";
|
||
}
|
||
|
||
if (in_type == type::open && (options & opt::multiselect))
|
||
{
|
||
script += "\nset s to \"\"";
|
||
script += "\nrepeat with i in ret";
|
||
script += "\n set s to s & (POSIX path of i) & \"\\n\"";
|
||
script += "\nend repeat";
|
||
script += "\ncopy s to stdout";
|
||
}
|
||
else
|
||
{
|
||
script += "\nPOSIX path of ret";
|
||
}
|
||
|
||
command.push_back("-e");
|
||
command.push_back(script);
|
||
}
|
||
else if (is_zenity())
|
||
{
|
||
command.push_back("--file-selection");
|
||
command.push_back("--filename=" + default_path);
|
||
command.push_back("--title");
|
||
command.push_back(title);
|
||
command.push_back("--separator=\n");
|
||
|
||
for (size_t i = 0; i < filters.size() / 2; ++i)
|
||
{
|
||
command.push_back("--file-filter");
|
||
command.push_back(filters[2 * i] + "|" + filters[2 * i + 1]);
|
||
}
|
||
|
||
if (in_type == type::save)
|
||
command.push_back("--save");
|
||
if (in_type == type::folder)
|
||
command.push_back("--directory");
|
||
if (!(options & opt::force_overwrite))
|
||
command.push_back("--confirm-overwrite");
|
||
if (options & opt::multiselect)
|
||
command.push_back("--multiple");
|
||
}
|
||
else if (is_kdialog())
|
||
{
|
||
switch (in_type)
|
||
{
|
||
case type::save: command.push_back("--getsavefilename"); break;
|
||
case type::open: command.push_back("--getopenfilename"); break;
|
||
case type::folder: command.push_back("--getexistingdirectory"); break;
|
||
}
|
||
if (options & opt::multiselect)
|
||
command.push_back(" --multiple");
|
||
|
||
command.push_back(default_path);
|
||
|
||
std::string filter;
|
||
for (size_t i = 0; i < filters.size() / 2; ++i)
|
||
filter += (i == 0 ? "" : " | ") + filters[2 * i] + "(" + filters[2 * i + 1] + ")";
|
||
command.push_back(filter);
|
||
|
||
command.push_back("--title");
|
||
command.push_back(title);
|
||
}
|
||
|
||
if (flags(flag::is_verbose))
|
||
std::cerr << "pfd: " << command << std::endl;
|
||
|
||
m_async->start_process(command);
|
||
#endif
|
||
}
|
||
|
||
std::string internal::file_dialog::string_result()
|
||
{
|
||
#if _WIN32
|
||
return m_async->result();
|
||
#else
|
||
auto ret = m_async->result();
|
||
// Strip potential trailing newline (zenity). Also strip trailing slash
|
||
// added by osascript for consistency with other backends.
|
||
while (ret.back() == '\n' || ret.back() == '/')
|
||
ret = ret.substr(0, ret.size() - 1);
|
||
return ret;
|
||
#endif
|
||
}
|
||
|
||
std::vector<std::string> internal::file_dialog::vector_result()
|
||
{
|
||
#if _WIN32
|
||
m_async->result();
|
||
return m_impl->m_vector_result;
|
||
#else
|
||
std::vector<std::string> ret;
|
||
auto result = m_async->result();
|
||
for (;;)
|
||
{
|
||
// Split result along newline characters
|
||
auto i = result.find('\n');
|
||
if (i == 0 || i == std::string::npos)
|
||
break;
|
||
ret.push_back(result.substr(0, i));
|
||
result = result.substr(i + 1, result.size());
|
||
}
|
||
return ret;
|
||
#endif
|
||
}
|
||
|
||
#if _WIN32
|
||
// Use a static function to pass as BFFCALLBACK for legacy folder select
|
||
int CALLBACK internal::file_dialog::Impl::bffcallback(HWND hwnd, UINT uMsg,
|
||
LPARAM, LPARAM pData)
|
||
{
|
||
auto inst = (file_dialog::Impl *)pData;
|
||
switch (uMsg)
|
||
{
|
||
case BFFM_INITIALIZED:
|
||
SendMessage(hwnd, BFFM_SETSELECTIONW, TRUE, (LPARAM)inst->m_wdefault_path.c_str());
|
||
break;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
std::string internal::file_dialog::Impl::select_folder_vista(IFileDialog *ifd, bool force_path)
|
||
{
|
||
std::string result;
|
||
|
||
IShellItem *folder;
|
||
|
||
// Load library at runtime so app doesn't link it at load time (which will fail on windows XP)
|
||
internal::platform::dll shell32("shell32.dll");
|
||
internal::platform::dll::proc<HRESULT WINAPI (PCWSTR, IBindCtx*, REFIID, void**)>
|
||
create_item(shell32, "SHCreateItemFromParsingName");
|
||
|
||
if (!create_item)
|
||
return "";
|
||
|
||
auto hr = create_item(m_wdefault_path.c_str(),
|
||
nullptr,
|
||
IID_PPV_ARGS(&folder));
|
||
|
||
// Set default folder if found. This only sets the default folder. If
|
||
// Windows has any info about the most recently selected folder, it
|
||
// will display it instead. Generally, calling SetFolder() to set the
|
||
// current directory “is not a good or expected user experience and
|
||
// should therefore be avoided”:
|
||
// https://docs.microsoft.com/windows/win32/api/shobjidl_core/nf-shobjidl_core-ifiledialog-setfolder
|
||
if (SUCCEEDED(hr))
|
||
{
|
||
if (force_path)
|
||
ifd->SetFolder(folder);
|
||
else
|
||
ifd->SetDefaultFolder(folder);
|
||
folder->Release();
|
||
}
|
||
|
||
// Set the dialog title and option to select folders
|
||
ifd->SetOptions(FOS_PICKFOLDERS);
|
||
ifd->SetTitle(m_wtitle.c_str());
|
||
|
||
hr = ifd->Show(GetActiveWindow());
|
||
if (SUCCEEDED(hr))
|
||
{
|
||
IShellItem* item;
|
||
hr = ifd->GetResult(&item);
|
||
if (SUCCEEDED(hr))
|
||
{
|
||
wchar_t* wselected = nullptr;
|
||
item->GetDisplayName(SIGDN_FILESYSPATH, &wselected);
|
||
item->Release();
|
||
|
||
if (wselected)
|
||
{
|
||
result = internal::wstr2str(std::wstring(wselected));
|
||
internal::platform::dll ole32("ole32.dll");
|
||
internal::platform::dll::proc<void WINAPI (LPVOID)>(ole32, "CoTaskMemFree")(wselected);
|
||
}
|
||
}
|
||
}
|
||
|
||
ifd->Release();
|
||
|
||
return result;
|
||
}
|
||
#endif
|
||
|
||
// notify implementation
|
||
|
||
notify::notify(std::string const &title,
|
||
std::string const &message,
|
||
icon _icon /* = icon::info */)
|
||
{
|
||
if (_icon == icon::question) // Not supported by notifications
|
||
_icon = icon::info;
|
||
|
||
#if _WIN32
|
||
// Use a static shared pointer for notify_icon so that we can delete
|
||
// it whenever we need to display a new one, and we can also wait
|
||
// until the program has finished running.
|
||
struct notify_icon_data : public NOTIFYICONDATAW
|
||
{
|
||
~notify_icon_data() { Shell_NotifyIconW(NIM_DELETE, this); }
|
||
};
|
||
|
||
static std::shared_ptr<notify_icon_data> nid;
|
||
|
||
// Release the previous notification icon, if any, and allocate a new
|
||
// one. Note that std::make_shared() does value initialization, so there
|
||
// is no need to memset the structure.
|
||
nid = nullptr;
|
||
nid = std::make_shared<notify_icon_data>();
|
||
|
||
// For XP support
|
||
nid->cbSize = NOTIFYICONDATAW_V2_SIZE;
|
||
nid->hWnd = nullptr;
|
||
nid->uID = 0;
|
||
|
||
// Flag Description:
|
||
// - NIF_ICON The hIcon member is valid.
|
||
// - NIF_MESSAGE The uCallbackMessage member is valid.
|
||
// - NIF_TIP The szTip member is valid.
|
||
// - NIF_STATE The dwState and dwStateMask members are valid.
|
||
// - NIF_INFO Use a balloon ToolTip instead of a standard ToolTip. The szInfo, uTimeout, szInfoTitle, and dwInfoFlags members are valid.
|
||
// - NIF_GUID Reserved.
|
||
nid->uFlags = NIF_MESSAGE | NIF_ICON | NIF_INFO;
|
||
|
||
// Flag Description
|
||
// - NIIF_ERROR An error icon.
|
||
// - NIIF_INFO An information icon.
|
||
// - NIIF_NONE No icon.
|
||
// - NIIF_WARNING A warning icon.
|
||
// - NIIF_ICON_MASK Version 6.0. Reserved.
|
||
// - NIIF_NOSOUND Version 6.0. Do not play the associated sound. Applies only to balloon ToolTips
|
||
switch (_icon)
|
||
{
|
||
case icon::warning: nid->dwInfoFlags = NIIF_WARNING; break;
|
||
case icon::error: nid->dwInfoFlags = NIIF_ERROR; break;
|
||
/* case icon::info: */ default: nid->dwInfoFlags = NIIF_INFO; break;
|
||
}
|
||
|
||
ENUMRESNAMEPROC icon_enum_callback = [](HMODULE, LPCTSTR, LPTSTR lpName, LONG_PTR lParam) -> BOOL
|
||
{
|
||
((NOTIFYICONDATAW *)lParam)->hIcon = ::LoadIcon(GetModuleHandle(nullptr), lpName);
|
||
return false;
|
||
};
|
||
|
||
nid->hIcon = ::LoadIcon(nullptr, IDI_APPLICATION);
|
||
::EnumResourceNames(nullptr, RT_GROUP_ICON, icon_enum_callback, (LONG_PTR)nid.get());
|
||
|
||
nid->uTimeout = 5000;
|
||
|
||
StringCchCopyW(nid->szInfoTitle, ARRAYSIZE(nid->szInfoTitle), internal::str2wstr(title).c_str());
|
||
StringCchCopyW(nid->szInfo, ARRAYSIZE(nid->szInfo), internal::str2wstr(message).c_str());
|
||
|
||
// Display the new icon
|
||
Shell_NotifyIconW(NIM_ADD, nid.get());
|
||
#else
|
||
auto command = desktop_helper();
|
||
|
||
if (is_osascript())
|
||
{
|
||
command.push_back("-e");
|
||
command.push_back("display notification " + osascript_quote(message) +
|
||
" with title " + osascript_quote(title));
|
||
}
|
||
else if (is_zenity())
|
||
{
|
||
command.push_back("--notification");
|
||
command.push_back("--window-icon");
|
||
command.push_back(get_icon_name(_icon));
|
||
command.push_back("--text");
|
||
command.push_back(title + "\n" + message);
|
||
}
|
||
else if (is_kdialog())
|
||
{
|
||
command.push_back("--icon");
|
||
command.push_back(get_icon_name(_icon));
|
||
command.push_back("--title");
|
||
command.push_back(title);
|
||
command.push_back("--passivepopup");
|
||
command.push_back(message);
|
||
command.push_back("5");
|
||
}
|
||
|
||
if (flags(flag::is_verbose))
|
||
std::cerr << "pfd: " << command << std::endl;
|
||
|
||
m_async->start_process(command);
|
||
#endif
|
||
}
|
||
|
||
// message implementation
|
||
|
||
message::message(std::string const &title,
|
||
std::string const &text,
|
||
choice _choice /* = choice::ok_cancel */,
|
||
icon _icon /* = icon::info */)
|
||
{
|
||
#if _WIN32
|
||
UINT style = MB_TOPMOST;
|
||
switch (_icon)
|
||
{
|
||
case icon::warning: style |= MB_ICONWARNING; break;
|
||
case icon::error: style |= MB_ICONERROR; break;
|
||
case icon::question: style |= MB_ICONQUESTION; break;
|
||
/* case icon::info: */ default: style |= MB_ICONINFORMATION; break;
|
||
}
|
||
|
||
switch (_choice)
|
||
{
|
||
case choice::ok_cancel: style |= MB_OKCANCEL; break;
|
||
case choice::yes_no: style |= MB_YESNO; break;
|
||
case choice::yes_no_cancel: style |= MB_YESNOCANCEL; break;
|
||
case choice::retry_cancel: style |= MB_RETRYCANCEL; break;
|
||
case choice::abort_retry_ignore: style |= MB_ABORTRETRYIGNORE; break;
|
||
/* case choice::ok: */ default: style |= MB_OK; break;
|
||
}
|
||
|
||
m_mappings[IDCANCEL] = button::cancel;
|
||
m_mappings[IDOK] = button::ok;
|
||
m_mappings[IDYES] = button::yes;
|
||
m_mappings[IDNO] = button::no;
|
||
m_mappings[IDABORT] = button::abort;
|
||
m_mappings[IDRETRY] = button::retry;
|
||
m_mappings[IDIGNORE] = button::ignore;
|
||
|
||
m_async->start_func([this, text, title, style](int* exit_code) -> std::string
|
||
{
|
||
auto wtext = internal::str2wstr(text);
|
||
auto wtitle = internal::str2wstr(title);
|
||
// using set context to apply new visual style (required for all windows versions)
|
||
internal::platform::new_style_context ctx;
|
||
*exit_code = MessageBoxW(GetActiveWindow(), wtext.c_str(), wtitle.c_str(), style);
|
||
return "";
|
||
});
|
||
|
||
#elif __EMSCRIPTEN__
|
||
std::string full_message;
|
||
switch (_icon)
|
||
{
|
||
case icon::warning: full_message = "⚠️"; break;
|
||
case icon::error: full_message = "⛔"; break;
|
||
case icon::question: full_message = "❓"; break;
|
||
/* case icon::info: */ default: full_message = "ℹ"; break;
|
||
}
|
||
|
||
full_message += ' ' + title + "\n\n" + text;
|
||
|
||
// This does not really start an async task; it just passes the
|
||
// EM_ASM_INT return value to a fake start() function.
|
||
m_async->start(EM_ASM_INT(
|
||
{
|
||
if ($1)
|
||
return window.confirm(UTF8ToString($0)) ? 0 : -1;
|
||
alert(UTF8ToString($0));
|
||
return 0;
|
||
}, full_message.c_str(), _choice == choice::ok_cancel));
|
||
#else
|
||
auto command = desktop_helper();
|
||
|
||
if (is_osascript())
|
||
{
|
||
std::string script = "display dialog " + osascript_quote(text) +
|
||
" with title " + osascript_quote(title);
|
||
switch (_choice)
|
||
{
|
||
case choice::ok_cancel:
|
||
script += "buttons {\"OK\", \"Cancel\"}"
|
||
" default button \"OK\""
|
||
" cancel button \"Cancel\"";
|
||
m_mappings[256] = button::cancel;
|
||
break;
|
||
case choice::yes_no:
|
||
script += "buttons {\"Yes\", \"No\"}"
|
||
" default button \"Yes\""
|
||
" cancel button \"No\"";
|
||
m_mappings[256] = button::no;
|
||
break;
|
||
case choice::yes_no_cancel:
|
||
script += "buttons {\"Yes\", \"No\", \"Cancel\"}"
|
||
" default button \"Yes\""
|
||
" cancel button \"Cancel\"";
|
||
m_mappings[256] = button::cancel;
|
||
break;
|
||
case choice::retry_cancel:
|
||
script += "buttons {\"Retry\", \"Cancel\"}"
|
||
" default button \"Retry\""
|
||
" cancel button \"Cancel\"";
|
||
m_mappings[256] = button::cancel;
|
||
break;
|
||
case choice::abort_retry_ignore:
|
||
script += "buttons {\"Abort\", \"Retry\", \"Ignore\"}"
|
||
" default button \"Retry\""
|
||
" cancel button \"Retry\"";
|
||
m_mappings[256] = button::cancel;
|
||
break;
|
||
case choice::ok: default:
|
||
script += "buttons {\"OK\"}"
|
||
" default button \"OK\""
|
||
" cancel button \"OK\"";
|
||
m_mappings[256] = button::ok;
|
||
break;
|
||
}
|
||
script += " with icon ";
|
||
switch (_icon)
|
||
{
|
||
#define PFD_OSX_ICON(n) "alias ((path to library folder from system domain) as text " \
|
||
"& \"CoreServices:CoreTypes.bundle:Contents:Resources:" n ".icns\")"
|
||
case icon::info: default: script += PFD_OSX_ICON("ToolBarInfo"); break;
|
||
case icon::warning: script += "caution"; break;
|
||
case icon::error: script += "stop"; break;
|
||
case icon::question: script += PFD_OSX_ICON("GenericQuestionMarkIcon"); break;
|
||
#undef PFD_OSX_ICON
|
||
}
|
||
|
||
command.push_back("-e");
|
||
command.push_back(script);
|
||
}
|
||
else if (is_zenity())
|
||
{
|
||
switch (_choice)
|
||
{
|
||
case choice::ok_cancel:
|
||
command.insert(command.end(), { "--question", "--cancel-label=Cancel", "--ok-label=OK" }); break;
|
||
case choice::yes_no:
|
||
// Do not use standard --question because it causes “No” to return -1,
|
||
// which is inconsistent with the “Yes/No/Cancel” mode below.
|
||
command.insert(command.end(), { "--question", "--switch", "--extra-button=No", "--extra-button=Yes" }); break;
|
||
case choice::yes_no_cancel:
|
||
command.insert(command.end(), { "--question", "--switch", "--extra-button=Cancel", "--extra-button=No", "--extra-button=Yes" }); break;
|
||
case choice::retry_cancel:
|
||
command.insert(command.end(), { "--question", "--switch", "--extra-button=Cancel", "--extra-button=Retry" }); break;
|
||
case choice::abort_retry_ignore:
|
||
command.insert(command.end(), { "--question", "--switch", "--extra-button=Ignore", "--extra-button=Abort", "--extra-button=Retry" }); break;
|
||
case choice::ok:
|
||
default:
|
||
switch (_icon)
|
||
{
|
||
case icon::error: command.push_back("--error"); break;
|
||
case icon::warning: command.push_back("--warning"); break;
|
||
default: command.push_back("--info"); break;
|
||
}
|
||
}
|
||
|
||
command.insert(command.end(), { "--title", title,
|
||
"--width=300", "--height=0", // sensible defaults
|
||
"--text", text,
|
||
"--icon-name=dialog-" + get_icon_name(_icon) });
|
||
}
|
||
else if (is_kdialog())
|
||
{
|
||
if (_choice == choice::ok)
|
||
{
|
||
switch (_icon)
|
||
{
|
||
case icon::error: command.push_back("--error"); break;
|
||
case icon::warning: command.push_back("--sorry"); break;
|
||
default: command.push_back("--msgbox"); break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
std::string flag = "--";
|
||
if (_icon == icon::warning || _icon == icon::error)
|
||
flag += "warning";
|
||
flag += "yesno";
|
||
if (_choice == choice::yes_no_cancel)
|
||
flag += "cancel";
|
||
command.push_back(flag);
|
||
if (_choice == choice::yes_no || _choice == choice::yes_no_cancel)
|
||
{
|
||
m_mappings[0] = button::yes;
|
||
m_mappings[256] = button::no;
|
||
}
|
||
}
|
||
|
||
command.push_back(text);
|
||
command.push_back("--title");
|
||
command.push_back(title);
|
||
|
||
// Must be after the above part
|
||
if (_choice == choice::ok_cancel)
|
||
command.insert(command.end(), { "--yes-label", "OK", "--no-label", "Cancel" });
|
||
}
|
||
|
||
if (flags(flag::is_verbose))
|
||
std::cerr << "pfd: " << command << std::endl;
|
||
|
||
m_async->start_process(command);
|
||
#endif
|
||
}
|
||
|
||
button message::result()
|
||
{
|
||
int exit_code;
|
||
auto ret = m_async->result(&exit_code);
|
||
// osascript will say "button returned:Cancel\n"
|
||
// and others will just say "Cancel\n"
|
||
if (exit_code < 0 || // this means cancel
|
||
internal::ends_with(ret, "Cancel\n"))
|
||
return button::cancel;
|
||
if (internal::ends_with(ret, "OK\n"))
|
||
return button::ok;
|
||
if (internal::ends_with(ret, "Yes\n"))
|
||
return button::yes;
|
||
if (internal::ends_with(ret, "No\n"))
|
||
return button::no;
|
||
if (internal::ends_with(ret, "Abort\n"))
|
||
return button::abort;
|
||
if (internal::ends_with(ret, "Retry\n"))
|
||
return button::retry;
|
||
if (internal::ends_with(ret, "Ignore\n"))
|
||
return button::ignore;
|
||
if (m_mappings.count(exit_code) != 0)
|
||
return m_mappings[exit_code];
|
||
return exit_code == 0 ? button::ok : button::cancel;
|
||
}
|
||
|
||
} // namespace pfd
|