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nana/source/gui/filebox.cpp
Jinhao c0836fbbec new folderbox class
2018-06-20 01:09:56 +08:00

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/*
* Filebox
* Nana C++ Library(http://www.nanapro.org)
* Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* @file: nana/gui/filebox.cpp
*/
#include <nana/gui.hpp>
#include <nana/gui/filebox.hpp>
#include <nana/filesystem/filesystem_ext.hpp>
#if defined(NANA_WINDOWS)
# include <windows.h>
# include <Shobjidl.h>
#elif defined(NANA_POSIX)
# include <nana/gui/widgets/label.hpp>
# include <nana/gui/widgets/button.hpp>
# include <nana/gui/widgets/listbox.hpp>
# include <nana/gui/widgets/categorize.hpp>
# include <nana/gui/widgets/textbox.hpp>
# include <nana/gui/widgets/treebox.hpp>
# include <nana/gui/widgets/combox.hpp>
# include <nana/gui/place.hpp>
# include <stdexcept>
# include <algorithm>
#endif
namespace fs = std::experimental::filesystem;
namespace fs_ext = nana::filesystem_ext;
namespace nana
{
#if defined(NANA_POSIX)
class filebox_implement
: public form
{
struct item_fs
{
std::string name;
::tm modified_time;
bool directory;
long long bytes;
friend listbox::iresolver& operator>>(listbox::iresolver& ires, item_fs& m)
{
std::wstring type;
ires>>m.name>>type>>type;
m.directory = (to_utf8(type) == internationalization()("NANA_FILEBOX_DIRECTORY"));
return ires;
}
friend listbox::oresolver& operator<<(listbox::oresolver& ores, const item_fs& item)
{
std::wstringstream tm;
tm<<(item.modified_time.tm_year + 1900)<<'-'; /// \todo : use nana::filesystem_ext:: pretty_file_date
_m_add(tm, item.modified_time.tm_mon + 1)<<'-';
_m_add(tm, item.modified_time.tm_mday)<<' ';
_m_add(tm, item.modified_time.tm_hour)<<':';
_m_add(tm, item.modified_time.tm_min)<<':';
_m_add(tm, item.modified_time.tm_sec);
internationalization i18n;
ores<<item.name<<tm.str();
if(!item.directory)
{
auto pos = item.name.find_last_of('.');
if(pos != item.name.npos && (pos + 1 < item.name.size()))
ores<<item.name.substr(pos + 1);
else
ores<<i18n("NANA_FILEBOX_FILE");
ores<<_m_trans(item.bytes);
}
else
ores << i18n("NANA_FILEBOX_DIRECTORY");
return ores;
}
private:
static std::wstringstream& _m_add(std::wstringstream& ss, unsigned v)
{
if(v < 10)
ss<<L'0';
ss<<v;
return ss;
}
static std::string _m_trans(std::size_t bytes) /// \todo : use nana::filesystem_ext::pretty_file_size
{
const char * ustr[] = {" KB", " MB", " GB", " TB"};
std::stringstream ss;
if(bytes >= 1024)
{
double cap = bytes / 1024.0;
std::size_t uid = 0;
while((cap >= 1024.0) && (uid < (sizeof(ustr) / sizeof(char*))))
{
cap /= 1024.0;
++uid;
}
ss<<cap;
auto s = ss.str();
auto pos = s.find('.');
if(pos != s.npos)
{
if(pos + 2 < s.size())
s.erase(pos + 2);
}
return s + ustr[uid];
}
internationalization i18n;
ss<<bytes<<" "<<i18n("NANA_FILEBOX_BYTES");
return ss.str();
}
};
struct pred_sort_fs
{
bool operator()(const item_fs& a, const item_fs& b) const
{
return ((a.directory != b.directory) && a.directory);
}
};
public:
enum class mode
{
open_file, //choose an existing file.
write_file, //choose a filename, it can be specified a new filename which doesn't exist.
open_directory, //choose an existing directory.
};
struct kind
{
enum t{none, filesystem};
};
typedef treebox::item_proxy item_proxy;
public:
filebox_implement(window owner, mode dialog_mode, const std::string& title, bool pick_directory = false):
form(owner, API::make_center(owner, 630, 440)),
pick_directory_(pick_directory),
mode_(dialog_mode)
{
internationalization i18n;
path_.create(*this);
path_.splitstr("/");
path_.events().selected.connect_unignorable([this](const arg_categorize<int>&)
{
auto path = path_.caption();
auto root = path.substr(0, path.find('/'));
if(root == "HOME")
path.replace(0, 4, fs_ext::path_user().native());
else if(root == "FILESYSTEM")
path.erase(0, 10);
else
throw std::runtime_error("Nana.GUI.Filebox: Wrong categorize path");
if(path.size() == 0) path = "/"; /// \todo : use nana::filesystem_ext::def_rootstr?
_m_load_cat_path(path);
});
filter_.create(*this);
filter_.multi_lines(false);
filter_.tip_string(i18n("NANA_FILEBOX_FILTER"));
filter_.events().key_release.connect_unignorable([this](const arg_keyboard&)
{
_m_list_fs();
});
btn_folder_.create(*this);
btn_folder_.i18n(i18n_eval("NANA_FILEBOX_NEW_FOLDER_SHORTKEY"));
btn_folder_.events().click.connect_unignorable([this](const arg_click&)
{
form fm(this->handle(), API::make_center(*this, 300, 35));
fm.i18n(i18n_eval("NANA_FILEBOX_NEW_FOLDER_CAPTION"));
textbox folder(fm, nana::rectangle(5, 5, 160, 25));
folder.multi_lines(false);
button btn(fm, nana::rectangle(170, 5, 60, 25));
btn.i18n(i18n_eval("NANA_BUTTON_CREATE"));
btn.events().click.connect_unignorable(folder_creator(*this, fm, folder));
button btn_cancel(fm, nana::rectangle(235, 5, 60, 25));
btn_cancel.i18n(i18n_eval("NANA_BUTTON_CANCEL"));
btn_cancel.events().click.connect_unignorable([&fm](const arg_click&)
{
fm.close();
});
API::modal_window(fm);
});
tree_.create(*this);
ls_file_.create(*this);
ls_file_.append_header(i18n("NANA_FILEBOX_HEADER_NAME"), 190);
ls_file_.append_header(i18n("NANA_FILEBOX_HEADER_MODIFIED"), 145);
ls_file_.append_header(i18n("NANA_FILEBOX_HEADER_TYPE"), 80);
ls_file_.append_header(i18n("NANA_FILEBOX_HEADER_SIZE"), 70);
auto fn_sel_file = [this](const arg_mouse& arg){
_m_select_file(arg);
};
ls_file_.events().dbl_click.connect_unignorable(fn_sel_file);
ls_file_.events().mouse_down.connect_unignorable(fn_sel_file);
ls_file_.set_sort_compare(0, [](const std::string& a, nana::any* fs_a, const std::string& b, nana::any* fs_b, bool reverse) -> bool
{
int dira = any_cast<item_fs>(fs_a)->directory ? 1 : 0;
int dirb = any_cast<item_fs>(fs_b)->directory ? 1 : 0;
if(dira != dirb)
return (reverse ? dira < dirb : dira > dirb);
std::size_t seek_a = 0;
std::size_t seek_b = 0;
while(true)
{
std::size_t pos_a = a.find_first_of("0123456789", seek_a);
std::size_t pos_b = b.find_first_of("0123456789", seek_b);
if((pos_a != a.npos) && (pos_a == pos_b))
{
nana::cistring text_a = a.substr(seek_a, pos_a - seek_a).data();
nana::cistring text_b = b.substr(seek_b, pos_b - seek_b).data();
if(text_a != text_b)
return (reverse ? text_a > text_b : text_a < text_b);
std::size_t end_a = a.find_first_not_of("0123456789", pos_a + 1);
std::size_t end_b = b.find_first_not_of("0123456789", pos_b + 1);
auto num_a = a.substr(pos_a, end_a != a.npos ? end_a - pos_a : a.npos);
auto num_b = b.substr(pos_b, end_b != b.npos ? end_b - pos_b : b.npos);
if(num_a != num_b)
{
double ai = std::stod(num_a, 0);
double bi = std::stod(num_b, 0);
if(ai != bi)
return (reverse ? ai > bi : ai < bi);
}
seek_a = end_a;
seek_b = end_b;
}
else
break;
}
if(seek_a == a.npos)
seek_a = 0;
if(seek_b == b.npos)
seek_b = 0;
nana::cistring cia = a.data();
nana::cistring cib = b.data();
if(seek_a == seek_b && seek_a == 0)
return (reverse ? cia > cib : cia < cib);
return (reverse ? cia.substr(seek_a) > cib.substr(seek_b) : cia.substr(seek_a) < cib.substr(seek_b));
});
ls_file_.set_sort_compare(2, [](const std::string& a, nana::any* anyptr_a, const std::string& b, nana::any* anyptr_b, bool reverse) -> bool
{
int dir1 = any_cast<item_fs>(anyptr_a)->directory ? 1 : 0;
int dir2 = any_cast<item_fs>(anyptr_b)->directory ? 1 : 0;
if(dir1 != dir2)
return (reverse ? dir1 < dir2 : dir1 > dir2);
return (reverse ? a > b : a < b);
});
ls_file_.set_sort_compare(3, [](const std::string&, nana::any* anyptr_a, const std::string&, nana::any* anyptr_b, bool reverse) -> bool
{
item_fs * fsa = any_cast<item_fs>(anyptr_a);
item_fs * fsb = any_cast<item_fs>(anyptr_b);
return (reverse ? fsa->bytes > fsb->bytes : fsa->bytes < fsb->bytes);
});
lb_file_.create(*this);
const char* idstr = (mode::open_directory == dialog_mode? "NANA_FILEBOX_DIRECTORY_COLON" : "NANA_FILEBOX_FILE_COLON");
lb_file_.i18n(i18n_eval(idstr));
lb_file_.text_align(align::right, align_v::center);
tb_file_.create(*this);
tb_file_.multi_lines(false);
tb_file_.events().key_char.connect_unignorable([this](const arg_keyboard& arg)
{
if(arg.key == nana::keyboard::enter)
_m_ok();
});
//Don't create the combox for choose a file extension if the dialog is used for picking a directory.
if(!pick_directory)
{
cb_types_.create(*this);
cb_types_.editable(false);
cb_types_.events().selected.connect_unignorable([this](const arg_combox&){ _m_list_fs(); });
}
btn_ok_.create(*this);
btn_ok_.i18n(i18n_eval("NANA_BUTTON_OK_SHORTKEY"));
btn_ok_.events().click.connect_unignorable([this](const arg_click&)
{
_m_ok();
});
btn_cancel_.create(*this);
btn_cancel_.i18n(i18n_eval("NANA_BUTTON_CANCEL_SHORTKEY"));
btn_cancel_.events().click.connect_unignorable([this](const arg_click&)
{
API::close_window(handle());
});
selection_.type = kind::none;
_m_layout();
_m_init_tree();
if(title.empty())
{
const char* idstr{ nullptr };
switch(dialog_mode)
{
case mode::open_file:
idstr = "NANA_FILEBOX_OPEN";
break;
case mode::write_file:
idstr = "NANA_FILEBOX_SAVE_AS";
break;
case mode::open_directory:
idstr = "NANA_FILEBOX_OPEN_DIRECTORY";
break;
}
this->i18n(i18n_eval(idstr));
}
else
caption(title);
}
void def_extension(const std::string& ext)
{
def_ext_ = ext;
}
void load_fs(const std::string& init_path, const std::string& init_file)
{
//Simulate the behavior like Windows7's lpstrInitialDir(http://msdn.microsoft.com/en-us/library/windows/desktop/ms646839%28v=vs.85%29.aspx)
//Phase 1
std::string dir;
auto pos = init_file.find_last_of("\\/");
auto file_with_path_removed = (pos != init_file.npos ? init_file.substr(pos + 1) : init_file);
if(saved_init_path != init_path)
{
if(saved_init_path.size() == 0)
saved_init_path = init_path;
//Phase 2: Check whether init_file contains a path
if(file_with_path_removed == init_file)
{
//Phase 3: Check whether init_path is empty
if(init_path.size())
dir = init_path;
}
else
dir = init_file.substr(0, pos);
}
else
dir = saved_selected_path;
_m_load_cat_path(dir.size() ? dir : fs_ext::path_user().native());
tb_file_.caption(file_with_path_removed);
}
void add_filter(const std::string& desc, const std::string& type)
{
std::size_t i = cb_types_.the_number_of_options();
cb_types_.push_back(desc);
if(0 == i)
cb_types_.option(0);
std::vector<std::string> v;
std::size_t beg = 0;
while(true)
{
auto pos = type.find(';', beg);
auto ext = type.substr(beg, pos == type.npos ? type.npos : pos - beg);
auto dot = ext.find('.');
if((dot != ext.npos) && (dot + 1 < ext.size()))
{
ext.erase(0, dot + 1);
if(ext == "*")
{
v.clear();
break;
}
else
v.push_back(ext);
}
if(pos == type.npos)
break;
beg = pos + 1;
}
if(v.size())
cb_types_.anyobj(i, v);
}
bool file(std::string& fs) const
{
if(selection_.type == kind::none)
return false;
auto pos = selection_.target.find_last_of("\\/");
if(pos != selection_.target.npos)
saved_selected_path = selection_.target.substr(0, pos);
else
saved_selected_path.clear();
fs = selection_.target;
return true;
}
private:
void _m_layout()
{
place_.bind(*this);
place_.div( "vert"
"<weight=34 margin=5 path arrange=[variable,200] gap=5>"
"<weight=30 margin=[0,0,5,10] new_folder arrange=[100]>"
"<content arrange=[180] gap=[5]><weight=8>"
"<weight=26<weight=100><vert weight=80 label margin=[0,5,0,0]>"
"<file margin=[0,18,0,5] arrange=[variable,variable,190] gap=[10]>>"
"<weight=48 margin=[8,0,14]<>"
"<buttons weight=208 margin=[0,18,0] gap=[14]>>");
place_.field("path")<<path_<<filter_;
place_.field("new_folder")<<btn_folder_;
place_.field("content")<<tree_<<ls_file_;
place_.field("label")<<lb_file_;
place_.field("file")<<tb_file_;
if(!pick_directory_)
place_.field("file")<<cb_types_;
place_.field("buttons")<<btn_ok_<<btn_cancel_;
place_.collocate();
}
void _m_init_tree()
{
//The path in linux is starting with the character '/', the name of root key should be
//"FS.HOME", "FS.ROOT". Because a key of the tree widget should not be '/'
nodes_.home = tree_.insert("FS.HOME", "Home");
nodes_.home.value(kind::filesystem);
nodes_.filesystem = tree_.insert("FS.ROOT", "Filesystem");
nodes_.filesystem.value(kind::filesystem);
std::vector<std::pair<std::string, treebox::item_proxy>> paths;
paths.emplace_back(fs_ext::path_user().native(), nodes_.home);
paths.emplace_back("/", nodes_.filesystem);
fs::directory_iterator end;
for (auto & p : paths)
{
for (fs::directory_iterator i{p.first}; i != end; ++i)
{
auto name = i->path().filename().native();
if (!is_directory(i->status()) || (name.size() && name[0] == '.'))
continue;
item_proxy node = tree_.insert(p.second, name, name);
if (false == node.empty())
{
node.value(kind::filesystem);
break;
}
}
}
tree_.events().expanded.connect_unignorable([this](const arg_treebox& arg)
{
_m_tr_expand(arg.item, arg.operated);
});
tree_.events().selected.connect_unignorable([this](const arg_treebox& arg)
{
if(arg.operated && (arg.item.value<kind::t>() == kind::filesystem))
{
auto path = tree_.make_key_path(arg.item, "/") + "/";
_m_resolute_path(path);
_m_load_cat_path(path);
}
});
}
std::string _m_resolute_path(std::string& path)
{
auto pos = path.find('/');
if(pos != path.npos)
{
auto begstr = path.substr(0, pos);
if(begstr == "FS.HOME")
path.replace(0, 7, fs_ext::path_user().native());
else
path.erase(0, pos);
return begstr;
}
return std::string();
}
void _m_load_path(const std::string& path)
{
addr_.filesystem = path;
if(addr_.filesystem.size() && addr_.filesystem[addr_.filesystem.size() - 1] != '/')
addr_.filesystem += '/';
file_container_.clear();
fs::directory_iterator end;
for(fs::directory_iterator i(path); i != end; ++i)
{
auto name = i->path().filename().native();
if(name.empty() || (name.front() == '.'))
continue;
auto fpath = i->path().native();
auto fattr = fs::status(fpath);
auto ftype = static_cast<fs::file_type>(fattr.type());
item_fs m;
m.name = name;
m.directory = fs::is_directory(fattr);
if (ftype == fs::file_type::not_found ||
ftype == fs::file_type::unknown ||
ftype == fs::file_type::directory)
m.bytes = 0;
else
m.bytes = fs::file_size(fpath);
fs_ext::modified_file_time(fpath, m.modified_time);
file_container_.push_back(m);
if(m.directory)
path_.childset(m.name, 0);
}
std::sort(file_container_.begin(), file_container_.end(), pred_sort_fs());
}
void _m_load_cat_path(std::string path)
{
if((path.size() == 0) || (path[path.size() - 1] != '/'))
path += '/';
auto beg_node = tree_.selected();
while(!beg_node.empty() && (beg_node != nodes_.home) && (beg_node != nodes_.filesystem))
beg_node = beg_node.owner();
auto head = fs_ext::path_user().native();
if(path.size() >= head.size() && (path.substr(0, head.size()) == head))
{//This is HOME
path_.caption("HOME");
if(beg_node != nodes_.home)
nodes_.home->select(true);
}
else
{ //Redirect to '/'
path_.caption("FILESYSTEM");
if(beg_node != nodes_.filesystem)
nodes_.filesystem->select(true);
head.clear();
}
if(head.size() == 0 || head[head.size() - 1] != '/')
head += '/';
fs::directory_iterator end;
for(fs::directory_iterator i(head); i != end; ++i)
{
if(is_directory(*i))
path_.childset(i->path().filename().native(), 0);
}
auto cat_path = path_.caption();
if(cat_path.size() && cat_path[cat_path.size() - 1] != '/')
cat_path += '/';
auto beg = head.size();
while(true)
{
auto pos = path.find('/', beg);
auto folder = path.substr(beg, pos != path.npos ? pos - beg: path.npos);
if(folder.empty())
break;
(cat_path += folder) += '/';
(head += folder) += '/';
path_.caption(cat_path);
try
{
for(fs::directory_iterator i(head); i != end; ++i)
{
if (is_directory(*i))
path_.childset(i->path().filename().native(), 0);
}
}
catch(fs::filesystem_error&)
{
//The directory iterator may throw filesystem_error when
//the user doesn't have permission to access the directory.
//It just loads the sub-directories
//to the category path.
}
if(pos == path.npos)
break;
beg = pos + 1;
}
try
{
_m_load_path(path);
_m_list_fs();
}
catch(fs::filesystem_error&)
{
file_container_.clear();
drawing dw{ls_file_};
dw.clear();
dw.draw([](paint::graphics& graph){
std::string text = "Permission denied to access the directory";
auto txt_sz = graph.text_extent_size(text);
auto sz = graph.size();
graph.string({static_cast<int>(sz.width - txt_sz.width) / 2, static_cast<int>(sz.height - txt_sz.height) / 2}, text, colors::dark_gray);
});
ls_file_.clear();
}
}
bool _m_filter_allowed(const std::string& name, bool is_dir, const std::string& filter, const std::vector<std::string>* extension) const
{
if(filter.size() && (name.find(filter) == filter.npos))
return false;
if(pick_directory_)
return is_dir;
if((is_dir || 0 == extension) || (0 == extension->size())) return true;
for(auto & extstr : *extension)
{
auto pos = name.rfind(extstr);
if((pos != name.npos) && (name.size() == pos + extstr.size()))
return true;
}
return false;
}
void _m_list_fs()
{
drawing{ls_file_}.clear();
auto filter = filter_.caption();
ls_file_.auto_draw(false);
ls_file_.clear();
auto ext_types = cb_types_.anyobj<std::vector<std::string> >(cb_types_.option());
auto cat = ls_file_.at(0);
for(auto & fs: file_container_)
{
if(_m_filter_allowed(fs.name, fs.directory, filter, ext_types))
{
cat.append(fs).value(fs);
}
}
ls_file_.auto_draw(true);
}
void _m_finish(kind::t type, const std::string& tar)
{
selection_.target = tar;
selection_.type = type;
close();
}
struct folder_creator
{
folder_creator(filebox_implement& fb, form & fm, textbox& tx)
: fb_(fb), fm_(fm), tx_path_(tx)
{}
void operator()()
{
auto path = tx_path_.caption();
internationalization i18n;
msgbox mb(fm_, i18n("NANA_FILEBOX_NEW_FOLDER"));
mb.icon(msgbox::icon_warning);
if(0 == path.size() || path[0] == '.' || path[0] == '/')
{
mb << i18n("NANA_FILEBOX_ERROR_INVALID_FOLDER_NAME");
mb();
return;
}
fs::path fspath(fb_.addr_.filesystem + path);
auto fattr = fs::status(fspath);
auto ftype = static_cast<fs::file_type>(fattr.type());
if(ftype != fs::file_type::not_found && ftype != fs::file_type::none)
{
mb<<i18n("NANA_FILEBOX_ERROR_RENAME_FOLDER_BECAUSE_OF_EXISTING");
mb();
return;
}
if(false == fs::create_directory(fspath))
{
mb<<i18n("NANA_FILEBOX_ERROR_RENAME_FOLDER_BECAUSE_OF_FAILED_CREATION");
mb();
return;
}
fb_._m_load_cat_path(fb_.addr_.filesystem);
fm_.close();
}
filebox_implement& fb_;
form& fm_;
textbox & tx_path_;
};
bool _m_append_def_extension(std::string& tar) const
{
auto dotpos = tar.find_last_of('.');
if(dotpos != tar.npos)
{
auto pos = tar.find_last_of("/\\");
if(pos == tar.npos || pos < dotpos)
return false;
}
if(def_ext_.size())
{
if(def_ext_[0] != '.')
tar += '.';
tar += def_ext_;
}
auto exts = cb_types_.anyobj<std::vector<std::string> >(cb_types_.option());
if(0 == exts || exts->size() == 0) return false;
auto & ext = exts->at(0);
if(def_ext_[0] != '.')
tar += '.';
tar += ext;
return true;
}
private:
void _m_select_file(const arg_mouse& arg)
{
auto sel = ls_file_.selected();
if(sel.empty())
return;
auto index = sel[0];
item_fs m;
ls_file_.at(index).resolve_to(m);
if(event_code::dbl_click == arg.evt_code)
{
if(m.directory)
_m_load_cat_path(addr_.filesystem + m.name + "/");
else
_m_finish(kind::filesystem, addr_.filesystem + m.name);
}
else
{
if((mode::open_directory == mode_) || (false == m.directory))
{
selection_.target = addr_.filesystem + m.name;
tb_file_.caption(m.name);
}
}
}
void _m_ok()
{
std::string tar = selection_.target;
if(selection_.target.empty())
{
auto file = tb_file_.caption();
if(file.size())
{
internationalization i18n;
if(file[0] == '.')
{
msgbox mb(*this, caption());
mb.icon(msgbox::icon_warning);
mb<<file<<std::endl<<i18n("NANA_FILEBOX_ERROR_INVALID_FILENAME");
mb();
return;
}
if(file[0] == '/')
tar = file;
else
tar = addr_.filesystem + file;
auto fattr = fs::status(tar);
auto ftype = static_cast<fs::file_type>(fattr.type());
//Check if the selected name is a directory
auto is_dir = fs::is_directory(fattr);
if(!is_dir && _m_append_def_extension(tar))
{
//Add the extension, then check if it is a directory again.
fattr = fs::status(tar);
ftype = static_cast<fs::file_type>(fattr.type());
is_dir = fs::is_directory(fattr);
}
if(is_dir)
{
_m_load_cat_path(tar);
tb_file_.caption(std::string{});
return;
}
if(mode::write_file != mode_)
{
if(fs::file_type::not_found == ftype)
{
msgbox mb(*this, caption());
mb.icon(msgbox::icon_information);
if(mode::open_file != mode_)
mb << i18n("NANA_FILEBOX_ERROR_NOT_EXISTING_AND_RETRY", tar);
else
mb << i18n("NANA_FILEBOX_ERROR_DIRECTORY_NOT_EXISTING_AND_RETRY", tar);
mb();
return;
}
}
else
{
if(fs::file_type::not_found != ftype)
{
msgbox mb(*this, caption(), msgbox::yes_no);
mb.icon(msgbox::icon_question);
mb<<i18n("NANA_FILEBOX_ERROR_QUERY_REWRITE_BECAUSE_OF_EXISTING");
if(msgbox::pick_no == mb())
return;
}
}
}
}
_m_finish(kind::filesystem, tar);
}
void _m_tr_expand(item_proxy node, bool exp)
{
if(false == exp) return;
if(kind::filesystem == node.value<kind::t>())
{
auto path = tree_.make_key_path(node, "/") + "/";
_m_resolute_path(path);
fs::directory_iterator end;
for (fs::directory_iterator i{path}; i != end; ++i)
{
auto name = i->path().filename().native();
if((!is_directory(*i)) || (name.size() && name[0] == '.'))
continue;
auto child = node.append(name, name, kind::filesystem);
if(!child.empty())
{
//The try-catch can be eleminated by using
//directory_iterator( const std::filesystem::path& p, std::error_code& ec ) noexcept;
//in C++17
try
{
for(fs::directory_iterator u(i->path()); u != end; ++u)
{
auto uname = u->path().filename().native();
if ((!is_directory(*u)) || (uname.size() && uname[0] == '.'))
continue;
child.append(uname, uname, kind::filesystem);
break;
}
}
catch(fs::filesystem_error&)
{
//The directory iterator may throw filesystem_error when
//the user doesn't have permission to access the directory.
//Catch the error without any process, because the loop is just
//to peak whether the directory(i->path) has a sub-directory.
}
}
}
}
}
private:
bool const pick_directory_;
mode mode_;
std::string def_ext_;
place place_;
categorize<int> path_;
textbox filter_;
button btn_folder_;
treebox tree_;
listbox ls_file_;
label lb_file_;
textbox tb_file_;
combox cb_types_;
button btn_ok_, btn_cancel_;
struct tree_node_tag
{
item_proxy home;
item_proxy filesystem;
}nodes_;
std::vector<item_fs> file_container_;
struct path_rep
{
std::string filesystem;
}addr_;
struct selection_rep
{
kind::t type;
std::string target;
}selection_;
static std::string saved_init_path;
static std::string saved_selected_path;
};//end class filebox_implement
std::string filebox_implement::saved_init_path;
std::string filebox_implement::saved_selected_path;
#endif
//class filebox
struct filebox::implement
{
struct filter
{
std::string des;
std::string type;
};
window owner;
bool open_or_save;
std::string file;
std::string title;
std::string path;
std::vector<filter> filters;
};
filebox::filebox(bool is_openmode)
: filebox(nullptr, is_openmode)
{
}
filebox::filebox(window owner, bool open)
: impl_(new implement)
{
impl_->owner = owner;
impl_->open_or_save = open;
#if defined(NANA_WINDOWS)
auto len = ::GetCurrentDirectory(0, nullptr);
if(len)
{
std::wstring path;
path.resize(len + 1);
::GetCurrentDirectory(len, &(path[0]));
path.resize(len);
impl_->path = to_utf8(path);
}
#endif
}
filebox::filebox(const filebox& other)
: impl_(new implement(*other.impl_))
{}
filebox::~filebox()
{
delete impl_;
}
filebox& filebox::operator=(const filebox& other)
{
if (this != &other)
*impl_ = *other.impl_;
return *this;
}
void filebox::owner(window wd)
{
impl_->owner = wd;
}
std::string filebox::title(std::string s)
{
impl_->title.swap(s);
return s;
}
filebox& filebox::init_path(const std::string& ipstr)
{
if(ipstr.empty())
{
impl_->path.clear();
}
else
{
if (fs::is_directory(ipstr))
impl_->path = ipstr;
}
return *this;
}
filebox& filebox::init_file(const std::string& ifstr)
{
impl_->file = ifstr;
return *this;
}
filebox& filebox::add_filter(const std::string& description, const std::string& filetype)
{
implement::filter flt = {description, filetype};
impl_->filters.push_back(flt);
return *this;
}
std::string filebox::path() const
{
return impl_->path;
}
std::string filebox::file() const
{
return impl_->file;
}
bool filebox::show() const
{
#if defined(NANA_WINDOWS)
auto winitfile = to_wstring(impl_->file);
std::wstring wfile(winitfile);
wfile.resize(520);
OPENFILENAME ofn;
memset(&ofn, 0, sizeof ofn);
internal_scope_guard lock;
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = reinterpret_cast<HWND>(API::root(impl_->owner));
ofn.lpstrFile = &(wfile[0]);
ofn.nMaxFile = static_cast<DWORD>(wfile.size() - 1);
const wchar_t * filter;
std::wstring filter_holder;
std::wstring default_extension;
if(impl_->filters.size())
{
for(auto & f : impl_->filters)
{
filter_holder += to_wstring(f.des);
filter_holder += static_cast<std::wstring::value_type>('\0');
std::wstring fs = to_wstring(f.type);
std::size_t pos = 0;
while(true)
{
pos = fs.find(L" ", pos);
if(pos == fs.npos)
break;
fs.erase(pos);
}
filter_holder += fs;
filter_holder += static_cast<std::wstring::value_type>('\0');
//Get the default file extentsion
if (default_extension.empty())
{
pos = fs.find_last_of('.');
if (pos != fs.npos)
{
fs = fs.substr(pos + 1);
if (fs != L"*")
{
default_extension = fs;
ofn.lpstrDefExt = default_extension.data();
}
}
}
}
filter = filter_holder.data();
}
else
filter = L"All Files\0*.*\0";
auto wtitle = to_wstring(impl_->title);
auto wpath = to_wstring(impl_->path);
ofn.lpstrFilter = filter;
ofn.lpstrTitle = (wtitle.empty() ? nullptr : wtitle.c_str());
ofn.nFilterIndex = 0;
ofn.lpstrFileTitle = nullptr;
ofn.nMaxFileTitle = 0;
ofn.lpstrInitialDir = (wpath.empty() ? nullptr : wpath.c_str());
if (!impl_->open_or_save)
ofn.Flags = OFN_OVERWRITEPROMPT; //Overwrite prompt if it is save mode
ofn.Flags |= OFN_NOCHANGEDIR;
{
internal_revert_guard revert;
if (FALSE == (impl_->open_or_save ? ::GetOpenFileName(&ofn) : ::GetSaveFileName(&ofn)))
return false;
}
wfile.resize(std::wcslen(wfile.data()));
impl_->file = to_utf8(wfile);
#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);
if(impl_->filters.size())
{
for(auto & f: impl_->filters)
{
std::string fs = f.type;
std::size_t pos = 0;
while(true)
{
pos = fs.find(" ", pos);
if(pos == fs.npos)
break;
fs.erase(pos);
}
fb.add_filter(f.des, fs);
}
}
else
fb.add_filter("All Files", "*.*");
fb.load_fs(impl_->path, impl_->file);
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();
return true;
}//end class filebox
//class directory_picker
struct folderbox::implement
{
window owner;
path_type init_path;
};
folderbox::folderbox(window owner, const path_type& init_path)
: impl_(new implement)
{
impl_->owner = owner;
impl_->init_path = init_path;
}
folderbox::~folderbox()
{
delete impl_;
}
std::optional<folderbox::path_type> folderbox::show() const
{
#ifdef NANA_WINDOWS
path_type target;
CoInitialize(NULL);
IFileDialog *fd(nullptr);
HRESULT hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&fd));
if (SUCCEEDED(hr))
{
IShellItem *init_path{ nullptr };
hr = SHCreateItemFromParsingName(impl_->init_path.wstring().c_str(), nullptr, IID_PPV_ARGS(&init_path));
if (SUCCEEDED(hr))
fd->SetDefaultFolder(init_path);
fd->SetOptions(FOS_PICKFOLDERS);
fd->Show(reinterpret_cast<HWND>(API::root(impl_->owner))); // the native handle of the parent nana form goes here
IShellItem *si;
hr = fd->GetResult(&si); // fails if user cancelled
if (SUCCEEDED(hr))
{
PWSTR pwstr(nullptr);
hr = si->GetDisplayName(SIGDN_FILESYSPATH, &pwstr);
if (SUCCEEDED(hr))
{
target = pwstr;
// use the c-string pointed to by pwstr here
CoTaskMemFree(pwstr);
}
si->Release();
}
fd->Release();
}
CoUninitialize();
return target;
#elif defined(NANA_POSIX)
using mode = filebox_implement::mode;
filebox_implement fb(impl_->owner, mode::open_directory, {}, true);
fb.load_fs(impl_->init_path, "");
API::modal_window(fb);
std::string path_directory;
if(false == fb.file(path_directory))
return {};
return path_type{path_directory};
#endif
}
}//end namespace nana
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