//---------------------------------------------------------------------------
/*
WtSelectFileDialog, Wt dialog for selecting a file
Copyright (C) 2011 Richel Bilderbeek
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program.If not, see <http://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
//From http://www.richelbilderbeek.nl/CppWtSelectFileDialog.htm
//---------------------------------------------------------------------------
#include <boost/filesystem.hpp>
#include <boost/foreach.hpp>
#include <boost/regex.hpp>
//---------------------------------------------------------------------------
#include <Wt/WBreak>
#include <Wt/WLabel>
#include <Wt/WLineEdit>
#include <Wt/WSelectionBox>
//---------------------------------------------------------------------------
#include "wtselectfiledialog.h"
#include "trace.h"
//---------------------------------------------------------------------------
///The path this dialog starts at
std::string WtSelectFileDialog::m_path = "";
//---------------------------------------------------------------------------
WtSelectFileDialog::WtSelectFileDialog()
{
Show();
}
//---------------------------------------------------------------------------
///Get all the files in a folder
//From http://www.richelbilderbeek.nl/CppGetFilesInFolder.htm
const std::vector<std::string> WtSelectFileDialog::GetFilesInFolder(const std::string& folder)
{
assert(!m_path.empty() && "Path must be set from argv[0]");
std::vector<std::string> v;
const boost::filesystem::path my_folder
= boost::filesystem::system_complete(
boost::filesystem::path(folder));
if (!boost::filesystem::is_directory(my_folder)) return v;
const boost::filesystem::directory_iterator j;
for ( boost::filesystem::directory_iterator i(my_folder);
i != j;
++i)
{
if ( boost::filesystem::is_regular_file( i->status() ) )
{
const std::string filename = i->path().filename();
//const std::string full_filename = folder + "/" + filename;
v.push_back(filename);
}
}
return v;
}
//---------------------------------------------------------------------------
const std::string WtSelectFileDialog::GetSelectedFile() const
{
if (ui.m_selection_box->currentIndex() == -1) return std::string();
return ui.m_selection_box->itemText(ui.m_selection_box->currentIndex()).toUTF8();
}
//---------------------------------------------------------------------------
const std::string WtSelectFileDialog::GetVersion()
{
return "1.3";
}
//---------------------------------------------------------------------------
const std::vector<std::string> WtSelectFileDialog::GetVersionHistory()
{
std::vector<std::string> v;
v.push_back("2011-07-01: version 1.0: initial version");
v.push_back("2011-07-01: version 1.1: added support for setting the regex filter");
v.push_back("2011-07-03: version 1.2: added support for setting the regex filter to readonly");
v.push_back("2011-07-15: version 1.3: added GetPath method, removed \'Select\' Wt::WPushButton");
return v;
}
//---------------------------------------------------------------------------
///OnFilterChanged is called when the selection filter is changed
void WtSelectFileDialog::OnFilterChanged()
{
try
{
boost::regex(ui.m_edit_filter->text().toUTF8());
}
catch(boost::bad_expression& e)
{
ui.m_selection_box->clear();
return;
}
//Get all filenames
const std::vector<std::string> v = GetFilesInFolder(m_path);
//Create the regex for a correct text file
const boost::regex txt_file_regex(ui.m_edit_filter->text().toUTF8());
std::vector<std::string> w;
//Copy_if(v.begin(),v.end(),
// std::back_inserter(w),
// boost::regex_match(boost::bind(boost::lambda::_1),txt_file_regex));
//Copy all filenames matching the regex in the resulting std::vector
BOOST_FOREACH(const std::string& s, v)
{
if (boost::regex_match(s,txt_file_regex))
{
w.push_back(s);
}
}
std::sort(w.begin(),w.end());
ui.m_selection_box->clear();
BOOST_FOREACH(const std::string& s,w)
{
ui.m_selection_box->addItem(s.c_str());
}
}
//---------------------------------------------------------------------------
///OnSelect is called when a client selected a file
void WtSelectFileDialog::OnSelect()
{
if (ui.m_selection_box->currentIndex() == -1) return;
m_signal_selected();
}
//---------------------------------------------------------------------------
///Set the regex filter filenames are selected for
void WtSelectFileDialog::SetFilter(const std::string& filename_filter)
{
ui.m_edit_filter->setText(filename_filter.c_str());
OnFilterChanged();
}
//---------------------------------------------------------------------------
///Set if the regex filter is readonly
void WtSelectFileDialog::SetFilterReadOnly(const bool readonly)
{
ui.m_edit_filter->setReadOnly(readonly);
}
//---------------------------------------------------------------------------
///Set the path in which this class will look for files
void WtSelectFileDialog::SetPath(const std::string& path)
{
m_path = path;
}
//---------------------------------------------------------------------------
void WtSelectFileDialog::Show()
{
assert(!m_path.empty() && "Path must be set from argv[0]");
clear();
setContentAlignment(Wt::AlignCenter);
ui.m_edit_filter = new Wt::WLineEdit(".*");
ui.m_selection_box = new Wt::WSelectionBox;
this->addWidget(ui.m_selection_box);
this->addWidget(new Wt::WBreak);
this->addWidget(new Wt::WLabel("File filter: "));
this->addWidget(ui.m_edit_filter);
ui.m_edit_filter->changed().connect(this,
&WtSelectFileDialog::OnFilterChanged);
ui.m_edit_filter->enterPressed().connect(this,
&WtSelectFileDialog::OnFilterChanged);
ui.m_selection_box->activated().connect(this,
&WtSelectFileDialog::OnSelect);
ui.m_selection_box->setSelectionMode(Wt::SingleSelection);
ui.m_selection_box->resize(400,Wt::WLength::Auto);
OnFilterChanged();
}
//---------------------------------------------------------------------------
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