# -*- coding: utf-8 -*-

# Copyright (c) 2010 - 2018 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing an exporter for ODT.
"""

from __future__ import unicode_literals

from PyQt5.QtCore import Qt
from PyQt5.QtGui import QCursor, QTextDocument, QTextDocumentWriter
from PyQt5.QtWidgets import QApplication

from E5Gui import E5MessageBox

from .ExporterBase import ExporterBase
from .ExporterHTML import HTMLGenerator

import Preferences


class ExporterODT(ExporterBase):
    """
    Class implementing an exporter for ODT.
    """
    def __init__(self, editor, parent=None):
        """
        Constructor
        
        @param editor reference to the editor object (QScintilla.Editor.Editor)
        @param parent parent object of the exporter (QObject)
        """
        ExporterBase.__init__(self, editor, parent)
    
    def exportSource(self):
        """
        Public method performing the export.
        """
        filename = self._getFileName(self.tr("ODT Files (*.odt)"))
        if not filename:
            return
        
        QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
        QApplication.processEvents()
        
        tabSize = Preferences.getEditor("TabWidth")
        if tabSize == 0:
            tabSize = 4
        wysiwyg = Preferences.getEditorExporter("ODT/WYSIWYG")
        onlyStylesUsed = Preferences.getEditorExporter("ODT/OnlyStylesUsed")
        tabs = Preferences.getEditorExporter("ODT/UseTabs")
        
        # generate HTML of the source
        generator = HTMLGenerator(self.editor)
        html = generator.generate(
            tabSize=tabSize,
            useTabs=tabs,
            wysiwyg=wysiwyg,
            folding=False,
            onlyStylesUsed=onlyStylesUsed,
            titleFullPath=False
        )
        
        # convert HTML to ODT
        doc = QTextDocument()
        doc.setHtml(html)
        writer = QTextDocumentWriter(filename)
        ok = writer.write(doc)
        QApplication.restoreOverrideCursor()
        if not ok:
            E5MessageBox.critical(
                self.editor,
                self.tr("Export source"),
                self.tr(
                    """<p>The source could not be exported to"""
                    """ <b>{0}</b>.</p>""").format(filename))
