Support loading translations for Python extensions

src/scripts/CMakeLists.txt

@@ -1,6 +1,7 @@
 function(install_python_script name)
     if (ENABLE_PYTHON_PLUGINS)
         install(DIRECTORY ${name} DESTINATION "${FALKON_INSTALL_PLUGINDIR}/python")
+        install(FILES i18n.py DESTINATION "${FALKON_INSTALL_PLUGINDIR}/python/${name}")
     endif()
 endfunction()
 

src/scripts/hellopython/hellopython.py

@@ -18,6 +18,7 @@
 import Falkon
 from PySide2 import QtCore, QtGui, QtWidgets
 from hellopython import sidebar, button
+from hellopython.i18n import i18n
 
 class HelloPlugin(Falkon.PluginInterface, QtCore.QObject):
     buttons = {}
@@ -62,19 +63,19 @@ class HelloPlugin(Falkon.PluginInterface, QtCore.QObject):
         if r.isContentEditable():
             title += " on input"
 
-        menu.addAction("My first plugin action" + title, self.actionSlot)
+        menu.addAction(i18n("My first plugin action") + title, self.actionSlot)
 
     def mousePress(self, type, obj, event):
         print("mousePress {} {} {}".format(type, obj, event))
         return False
 
     def actionSlot(self):
-        QtWidgets.QMessageBox.information(self.view, "Hello", "First plugin action works :-)")
+        QtWidgets.QMessageBox.information(self.view, i18n("Hello"), i18n("First plugin action works :-)"))
 
     def showSettings(self, parent):
         self.settings = QtWidgets.QDialog(parent)
         b = QtWidgets.QPushButton("Hello Python v0.0.1")
-        closeButton = QtWidgets.QPushButton("Close")
+        closeButton = QtWidgets.QPushButton(i18n("Close"))
         label = QtWidgets.QLabel()
         label.setPixmap(QtGui.QPixmap(":icons/other/about.svg"))
 
@@ -84,7 +85,7 @@ class HelloPlugin(Falkon.PluginInterface, QtCore.QObject):
         l.addWidget(closeButton)
 
         self.settings.setAttribute(QtCore.Qt.WA_DeleteOnClose)
-        self.settings.setWindowTitle("Hello Python Settings")
+        self.settings.setWindowTitle(i18n("Hello Python Settings"))
         self.settings.setWindowIcon(QtGui.QIcon(":icons/falkon.svg"))
         closeButton.clicked.connect(self.settings.close)
 

src/scripts/hellopython/sidebar.py

@@ -17,13 +17,14 @@
 # ============================================================
 import Falkon
 from PySide2 import QtGui, QtWidgets
+from hellopython.i18n import i18n
 
 class HelloSidebar(Falkon.SideBarInterface):
     def title(self):
-        return "HelloPython Sidebar"
+        return i18n("Hello Python Sidebar")
 
     def createMenuAction(self):
-        act = QtWidgets.QAction("Hello Python Sidebar")
+        act = QtWidgets.QAction(i18n("Hello Python Sidebar"))
         act.setCheckable(True)
         return act
 

src/scripts/i18n.py

@@ -0,0 +1,29 @@
+# ============================================================
+# Falkon - Qt web browser
+# Copyright (C) 2018 David Rosca <nowrep@gmail.com>
+#
+# 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/>.
+# ============================================================
+import gettext
+from PySide2 import QtCore
+
+locale = QtCore.QLocale.system()
+languages = [ locale.name(), locale.bcp47Name() ]
+i = locale.name().find('_')
+if i > 0: languages.append(locale.name()[:i])
+localedir = QtCore.QStandardPaths.locate(QtCore.QStandardPaths.GenericDataLocation, 'locale', QtCore.QStandardPaths.LocateDirectory)
+
+t = gettext.translation('falkon_' + __package__, localedir, languages, fallback=True)
+i18n = t.gettext
+i18np = t.ngettext