1 files changed, 268 insertions, 0 deletions
diff --git a/src/extension/prefdialog/parameter-path.cpp b/src/extension/prefdialog/parameter-path.cpp
new file mode 100644
index 0000000..83b54fc
--- /dev/null
+++ b/src/extension/prefdialog/parameter-path.cpp
@@ -0,0 +1,268 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Path parameter for extensions
+ *//*
+ * Authors:
+ *   Patrick Storz <eduard.braun2@gmx.de>
+ *
+ * Copyright (C) 2019 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "parameter-path.h"
+
+#include <boost/algorithm/string/case_conv.hpp>
+#include <boost/algorithm/string/join.hpp>
+
+#include <glibmm/i18n.h>
+#include <glibmm/fileutils.h>
+#include <glibmm/miscutils.h>
+#include <glibmm/regex.h>
+
+#include <gtkmm/box.h>
+#include <gtkmm/button.h>
+#include <gtkmm/dialog.h>
+#include <gtkmm/entry.h>
+#include <gtkmm/filechoosernative.h>
+
+#include "xml/node.h"
+#include "extension/extension.h"
+#include "preferences.h"
+
+namespace Inkscape {
+namespace Extension {
+
+ParamPath::ParamPath(Inkscape::XML::Node *xml, Inkscape::Extension::Extension *ext)
+    : InxParameter(xml, ext)
+{
+    // get value
+    const char *value = nullptr;
+    if (xml->firstChild()) {
+        value = xml->firstChild()->content();
+    }
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    _value = prefs->getString(pref_name()).raw();
+
+    if (_value.empty() && value) {
+        _value = value;
+    }
+
+    // parse selection mode
+    const char *mode = xml->attribute("mode");
+    if (mode) {
+        if (!strcmp(mode, "file")) {
+            // this is the default
+        } else if (!strcmp(mode, "files")) {
+            _select_multiple = true;
+        } else if (!strcmp(mode, "folder")) {
+            _mode = FOLDER;
+        } else if (!strcmp(mode, "folders")) {
+            _mode = FOLDER;
+            _select_multiple = true;
+        } else if (!strcmp(mode, "file_new")) {
+            _mode = FILE_NEW;
+        } else if (!strcmp(mode, "folder_new")) {
+            _mode = FOLDER_NEW;
+        } else {
+            g_warning("Invalid value ('%s') for mode of parameter '%s' in extension '%s'",
+                      mode, _name, _extension->get_id());
+        }
+    }
+
+    // parse filetypes
+    const char *filetypes = xml->attribute("filetypes");
+    if (filetypes) {
+        _filetypes = Glib::Regex::split_simple("," , filetypes);
+    }
+}
+
+/**
+ * A function to set the \c _value.
+ *
+ * This function sets the internal value, but it also sets the value
+ * in the preferences structure.  To put it in the right place \c pref_name() is used.
+ *
+ * @param  in   The value to set to.
+ */
+const std::string& ParamPath::set(const std::string &in)
+{
+    _value = in;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    prefs->setString(pref_name(), _value);
+
+    return _value;
+}
+
+std::string ParamPath::value_to_string() const
+{
+    if (!Glib::path_is_absolute(_value) && !_value.empty()) {
+        return Glib::build_filename(_extension->get_base_directory(), _value);
+    } else {
+        return _value;
+    }
+}
+
+
+/** A special type of Gtk::Entry to handle path parameters. */
+class ParamPathEntry : public Gtk::Entry {
+private:
+    ParamPath *_pref;
+    sigc::signal<void> *_changeSignal;
+public:
+    /**
+     * Build a string preference for the given parameter.
+     * @param  pref  Where to get the string from, and where to put it
+     *                when it changes.
+     */
+    ParamPathEntry(ParamPath *pref, sigc::signal<void> *changeSignal)
+        : Gtk::Entry()
+        , _pref(pref)
+        , _changeSignal(changeSignal)
+    {
+        this->set_text(_pref->get());
+        this->signal_changed().connect(sigc::mem_fun(this, &ParamPathEntry::changed_text));
+    };
+    void changed_text();
+};
+
+
+/**
+ * Respond to the text box changing.
+ *
+ * This function responds to the box changing by grabbing the value
+ * from the text box and putting it in the parameter.
+ */
+void ParamPathEntry::changed_text()
+{
+    auto data = this->get_text();
+    _pref->set(data.c_str());
+    if (_changeSignal != nullptr) {
+        _changeSignal->emit();
+    }
+}
+
+/**
+ * Creates a text box for the string parameter.
+ *
+ * Builds a hbox with a label and a text box in it.
+ */
+Gtk::Widget *ParamPath::get_widget(sigc::signal<void> *changeSignal)
+{
+    if (_hidden) {
+        return nullptr;
+    }
+
+    Gtk::Box *hbox = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, GUI_PARAM_WIDGETS_SPACING));
+    Gtk::Label *label = Gtk::manage(new Gtk::Label(_text, Gtk::ALIGN_START));
+    label->show();
+    hbox->pack_start(*label, false, false);
+
+    ParamPathEntry *textbox = Gtk::manage(new ParamPathEntry(this, changeSignal));
+    textbox->show();
+    hbox->pack_start(*textbox, true, true);
+    _entry = textbox;
+
+    Gtk::Button *button = Gtk::manage(new Gtk::Button("…"));
+	button->show();
+    hbox->pack_end(*button, false, false);
+    button->signal_clicked().connect(sigc::mem_fun(*this, &ParamPath::on_button_clicked));
+
+    hbox->show();
+
+    return dynamic_cast<Gtk::Widget *>(hbox);
+}
+
+/**
+ * Create and show the file chooser dialog when the "…" button is clicked
+ * Then set the value of the ParamPathEntry holding the current value accordingly
+ */
+void ParamPath::on_button_clicked()
+{
+    // set-up action and dialog title according to 'mode'
+    Gtk::FileChooserAction action;
+    std::string dialog_title;
+    if (_mode == FILE) {
+        // pick the "save" variants here - otherwise the dialog will only accept existing files
+        action = Gtk::FILE_CHOOSER_ACTION_OPEN;
+        if (_select_multiple) {
+            dialog_title = _("Select existing files");
+        } else {
+            dialog_title = _("Select existing file");
+        }
+    } else if (_mode == FOLDER) {
+        // pick the "create" variant here - otherwise the dialog will only accept existing folders
+        action = Gtk::FILE_CHOOSER_ACTION_SELECT_FOLDER;
+        if (_select_multiple) {
+            dialog_title = _("Select existing folders");
+        } else {
+            dialog_title = _("Select existing folder");
+        }
+    } else if (_mode == FILE_NEW) {
+        action = Gtk::FILE_CHOOSER_ACTION_SAVE;
+        dialog_title = _("Choose file name");
+    } else if (_mode == FOLDER_NEW) {
+        action = Gtk::FILE_CHOOSER_ACTION_CREATE_FOLDER;
+        dialog_title = _("Choose folder name");
+    } else {
+        g_assert_not_reached();
+    }
+
+    // create file chooser dialog
+    auto file_chooser = Gtk::FileChooserNative::create(dialog_title + "…", action, _("Select"));
+    file_chooser->set_select_multiple(_select_multiple);
+    file_chooser->set_do_overwrite_confirmation(true);
+    file_chooser->set_create_folders(true);
+
+    // set FileFilter according to 'filetype' attribute
+    if (!_filetypes.empty() && _mode != FOLDER && _mode != FOLDER_NEW) {
+        Glib::RefPtr<Gtk::FileFilter> file_filter = Gtk::FileFilter::create();
+
+        for (auto filetype : _filetypes) {
+            file_filter->add_pattern(Glib::ustring::compose("*.%1", filetype));
+        }
+
+        std::string filter_name = boost::algorithm::join(_filetypes, "+");
+        boost::algorithm::to_upper(filter_name);
+        file_filter->set_name(filter_name);
+
+        file_chooser->add_filter(file_filter);
+    }
+
+    // set current file/folder suitable for current value
+    // (use basepath of first filename; relative paths are considered relative to .inx file's location)
+    if (!_value.empty()) {
+        std::string first_filename = _value.substr(0, _value.find("|"));
+
+        if (!Glib::path_is_absolute(first_filename)) {
+            first_filename = Glib::build_filename(_extension->get_base_directory(), first_filename);
+        }
+
+        std::string dirname = Glib::path_get_dirname(first_filename);
+        if (Glib::file_test(dirname, Glib::FILE_TEST_IS_DIR)) {
+            file_chooser->set_current_folder(dirname);
+        }
+
+        if(_mode == FILE_NEW || _mode == FOLDER_NEW) {
+            file_chooser->set_current_name(Glib::path_get_basename(first_filename));
+        } else {
+            if (Glib::file_test(first_filename, Glib::FILE_TEST_EXISTS)) {
+                // TODO: This does not seem to work (at least on Windows)
+                // file_chooser->set_filename(first_filename);
+            }
+        }
+    }
+
+    // show dialog and parse result
+    int res = file_chooser->run();
+    if (res == Gtk::ResponseType::RESPONSE_ACCEPT) {
+        std::vector<std::string> filenames = file_chooser->get_filenames();
+        std::string filenames_joined = boost::algorithm::join(filenames, "|");
+        _entry->set_text(filenames_joined); // let the ParamPathEntry handle the rest (including setting the preference)
+    }
+}
+
+}  /* namespace Extension */
+}  /* namespace Inkscape */