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Allow multiple file selection with nana::filebox on Windows platform

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This commit is contained in:
Katsuhisa Yuasa 2018-10-28 21:20:19 +09:00
parent 852aa698ed
commit b8719f74a8
2 changed files with 81 additions and 12 deletions
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8
include/nana/gui/filebox.hpp
View File

@ -68,8 +68,12 @@ namespace nana
};
::std::string path() const;
::std::string file() const;
const ::std::string& path() const;
const ::std::string& file() const;
#if defined(NANA_WINDOWS)
const ::std::vector<::std::string>& files() const;
void allow_multi_select(bool allow);
#endif
/// Display the filebox dialog
bool show() const;

83
source/gui/filebox.cpp
View File

@ -995,7 +995,12 @@ namespace nana
window owner;
bool open_or_save;
#if defined(NANA_WINDOWS)
bool allow_multi_select;
std::vector<std::string> files;
#else
std::string file;
#endif
std::string title;
std::string path;
std::vector<filter> filters;
@ -1012,6 +1017,7 @@ namespace nana
impl_->owner = owner;
impl_->open_or_save = open;
#if defined(NANA_WINDOWS)
impl_->allow_multi_select = false;
auto len = ::GetCurrentDirectory(0, nullptr);
if(len)
{
@ -1068,7 +1074,11 @@ namespace nana
filebox& filebox::init_file(const std::string& ifstr)
{
#if defined(NANA_WINDOWS)
impl_->files = {ifstr};
#else
impl_->file = ifstr;
#endif
return *this;
}
@ -1079,22 +1089,41 @@ namespace nana
return *this;
}
std::string filebox::path() const
const std::string& filebox::path() const
{
return impl_->path;
}
std::string filebox::file() const
#if defined(NANA_WINDOWS)
const std::string& filebox::file() const
{
if(impl_->files.empty())
{
static const std::string empty = "";
return empty;
}
else
{
return impl_->files.front();
}
}
const std::vector<std::string>& filebox::files() const
{
return impl_->files;
}
#else
const std::string& filebox::file() const
{
return impl_->file;
}
#endif
bool filebox::show() const
{
#if defined(NANA_WINDOWS)
auto winitfile = to_wstring(impl_->file);
std::wstring wfile(winitfile);
wfile.resize(520);
std::wstring wfile(impl_->files.empty() ? L"" : to_wstring(impl_->files.front()));
wfile.resize(impl_->allow_multi_select ? (520 + 32*256) : 520);
OPENFILENAME ofn;
memset(&ofn, 0, sizeof ofn);
@ -1159,6 +1188,10 @@ namespace nana
if (!impl_->open_or_save)
ofn.Flags = OFN_OVERWRITEPROMPT; //Overwrite prompt if it is save mode
ofn.Flags |= OFN_NOCHANGEDIR;
if(impl_->allow_multi_select)
{
ofn.Flags |= (OFN_ALLOWMULTISELECT | OFN_EXPLORER);
}
{
internal_revert_guard revert;
@ -1166,8 +1199,33 @@ namespace nana
return false;
}
wfile.resize(std::wcslen(wfile.data()));
impl_->file = to_utf8(wfile);
if(impl_->allow_multi_select)
{
wchar_t* str = ofn.lpstrFile;
std::wstring dir = str;
str += (dir.length() + 1);
impl_->files.clear();
while(*str)
{
std::wstring filename = str;
std::wstring file_path = dir + L"\\" + filename;
impl_->files.emplace_back(to_utf8(file_path));
str += (filename.length() + 1);
}
impl_->path = to_utf8(dir);
}
else
{
wfile.resize(std::wcslen(wfile.data()));
auto file = to_utf8(wfile);
impl_->files = {file};
auto tpos = file.find_last_of("\\/");
if(tpos != file.npos)
impl_->path = file.substr(0, tpos);
else
impl_->path.clear();
}
#elif defined(NANA_POSIX)
using mode = filebox_implement::mode;
filebox_implement fb(impl_->owner, (impl_->open_or_save ? mode::open_file : mode::write_file), impl_->title);
@ -1196,16 +1254,23 @@ namespace nana
API::modal_window(fb);
if(false == fb.file(impl_->file))
return false;
#endif
auto tpos = impl_->file.find_last_of("\\/");
if(tpos != impl_->file.npos)
impl_->path = impl_->file.substr(0, tpos);
else
impl_->path.clear();
#endif
return true;
}//end class filebox
}
#if defined(NANA_WINDOWS)
void filebox::allow_multi_select(bool allow)
{
impl_->allow_multi_select = allow;
}
#endif
//end class filebox
//class directory_picker
struct folderbox::implement