FlatCAM/FlatCAMCommon.py

# ##########################################################
# FlatCAM: 2D Post-processing for Manufacturing            #
# http://flatcam.org                                       #
# Author: Juan Pablo Caram (c)                             #
# Date: 2/5/2014                                           #
# MIT Licence                                              #
# ##########################################################

# ##########################################################
# File Modified (major mod): Marius Adrian Stanciu         #
# Date: 11/4/2019                                          #
# ##########################################################

from PyQt5 import QtGui, QtCore, QtWidgets
from flatcamGUI.GUIElements import FCTable, FCEntry, FCButton, FCSpinner, FCDoubleSpinner, FCComboBox, FCCheckBox

import sys
import webbrowser
from copy import deepcopy
from datetime import datetime
import gettext
import FlatCAMTranslation as fcTranslate
import builtins

fcTranslate.apply_language('strings')
if '_' not in builtins.__dict__:
    _ = gettext.gettext


class LoudDict(dict):
    """
    A Dictionary with a callback for
    item changes.
    """

    def __init__(self, *args, **kwargs):
        dict.__init__(self, *args, **kwargs)
        self.callback = lambda x: None

    def __setitem__(self, key, value):
        """
        Overridden __setitem__ method. Will emit 'changed(QString)'
        if the item was changed, with key as parameter.
        """
        if key in self and self.__getitem__(key) == value:
            return

        dict.__setitem__(self, key, value)
        self.callback(key)

    def update(self, *args, **kwargs):
        if len(args) > 1:
            raise TypeError("update expected at most 1 arguments, got %d" % len(args))
        other = dict(*args, **kwargs)
        for key in other:
            self[key] = other[key]

    def set_change_callback(self, callback):
        """
        Assigns a function as callback on item change. The callback
        will receive the key of the object that was changed.

        :param callback: Function to call on item change.
        :type callback: func
        :return: None
        """

        self.callback = callback


class FCSignal:
    """
    Taken from here: https://blog.abstractfactory.io/dynamic-signals-in-pyqt/
    """

    def __init__(self):
        self.__subscribers = []

    def emit(self, *args, **kwargs):
        for subs in self.__subscribers:
            subs(*args, **kwargs)

    def connect(self, func):
        self.__subscribers.append(func)

    def disconnect(self, func):
        try:
            self.__subscribers.remove(func)
        except ValueError:
            print('Warning: function %s not removed '
                  'from signal %s' % (func, self))


class BookmarkManager(QtWidgets.QWidget):

    mark_rows = QtCore.pyqtSignal()

    def __init__(self, app, storage, parent=None):
        super(BookmarkManager, self).__init__(parent)

        self.app = app

        assert isinstance(storage, dict), "Storage argument is not a dictionary"

        self.bm_dict = deepcopy(storage)

        # Icon and title
        # self.setWindowIcon(parent.app_icon)
        # self.setWindowTitle(_("Bookmark Manager"))
        # self.resize(600, 400)

        # title = QtWidgets.QLabel(
        #     "<font size=8><B>FlatCAM</B></font><BR>"
        # )
        # title.setOpenExternalLinks(True)

        # layouts
        layout = QtWidgets.QVBoxLayout()
        self.setLayout(layout)

        table_hlay = QtWidgets.QHBoxLayout()
        layout.addLayout(table_hlay)

        self.table_widget = FCTable(drag_drop=True, protected_rows=[0, 1])
        self.table_widget.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
        table_hlay.addWidget(self.table_widget)

        self.table_widget.setColumnCount(3)
        self.table_widget.setColumnWidth(0, 20)
        self.table_widget.setHorizontalHeaderLabels(
            [
                '#',
                _('Title'),
                _('Web Link')
            ]
        )
        self.table_widget.horizontalHeaderItem(0).setToolTip(
            _("Index.\n"
              "The rows in gray color will populate the Bookmarks menu.\n"
              "The number of gray colored rows is set in Preferences."))
        self.table_widget.horizontalHeaderItem(1).setToolTip(
            _("Description of the link that is set as an menu action.\n"
              "Try to keep it short because it is installed as a menu item."))
        self.table_widget.horizontalHeaderItem(2).setToolTip(
            _("Web Link. E.g: https://your_website.org "))

        # pal = QtGui.QPalette()
        # pal.setColor(QtGui.QPalette.Background, Qt.white)

        # New Bookmark
        new_vlay = QtWidgets.QVBoxLayout()
        layout.addLayout(new_vlay)

        new_title_lbl = QtWidgets.QLabel('<b>%s</b>' % _("New Bookmark"))
        new_vlay.addWidget(new_title_lbl)

        form0 = QtWidgets.QFormLayout()
        new_vlay.addLayout(form0)

        title_lbl = QtWidgets.QLabel('%s:' % _("Title"))
        self.title_entry = FCEntry()
        form0.addRow(title_lbl, self.title_entry)

        link_lbl = QtWidgets.QLabel('%s:' % _("Web Link"))
        self.link_entry = FCEntry()
        self.link_entry.set_value('http://')
        form0.addRow(link_lbl, self.link_entry)

        # Buttons Layout
        button_hlay = QtWidgets.QHBoxLayout()
        layout.addLayout(button_hlay)

        add_entry_btn = FCButton(_("Add Entry"))
        remove_entry_btn = FCButton(_("Remove Entry"))
        export_list_btn = FCButton(_("Export List"))
        import_list_btn = FCButton(_("Import List"))
        closebtn = QtWidgets.QPushButton(_("Close"))

        # button_hlay.addStretch()
        button_hlay.addWidget(add_entry_btn)
        button_hlay.addWidget(remove_entry_btn)

        button_hlay.addWidget(export_list_btn)
        button_hlay.addWidget(import_list_btn)
        # button_hlay.addWidget(closebtn)
        # ##############################################################################
        # ######################## SIGNALS #############################################
        # ##############################################################################

        add_entry_btn.clicked.connect(self.on_add_entry)
        remove_entry_btn.clicked.connect(self.on_remove_entry)
        export_list_btn.clicked.connect(self.on_export_bookmarks)
        import_list_btn.clicked.connect(self.on_import_bookmarks)
        self.title_entry.returnPressed.connect(self.on_add_entry)
        self.link_entry.returnPressed.connect(self.on_add_entry)
        # closebtn.clicked.connect(self.accept)

        self.table_widget.drag_drop_sig.connect(self.mark_table_rows_for_actions)
        self.build_bm_ui()

    def build_bm_ui(self):

        self.table_widget.setRowCount(len(self.bm_dict))

        nr_crt = 0
        sorted_bookmarks = sorted(list(self.bm_dict.items()), key=lambda x: int(x[0]))
        for entry, bookmark in sorted_bookmarks:
            row = nr_crt
            nr_crt += 1

            title = bookmark[0]
            weblink = bookmark[1]

            id_item = QtWidgets.QTableWidgetItem('%d' % int(nr_crt))
            # id.setFlags(QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEnabled)
            self.table_widget.setItem(row, 0, id_item)  # Tool name/id

            title_item = QtWidgets.QTableWidgetItem(title)
            self.table_widget.setItem(row, 1, title_item)

            weblink_txt = QtWidgets.QTextBrowser()
            weblink_txt.setOpenExternalLinks(True)
            weblink_txt.setFrameStyle(QtWidgets.QFrame.NoFrame)
            weblink_txt.document().setDefaultStyleSheet("a{ text-decoration: none; }")

            weblink_txt.setHtml('<a href=%s>%s</a>' % (weblink, weblink))

            self.table_widget.setCellWidget(row, 2, weblink_txt)

            vertical_header = self.table_widget.verticalHeader()
            vertical_header.hide()

            horizontal_header = self.table_widget.horizontalHeader()
            horizontal_header.setMinimumSectionSize(10)
            horizontal_header.setDefaultSectionSize(70)
            horizontal_header.setSectionResizeMode(0, QtWidgets.QHeaderView.Fixed)
            horizontal_header.resizeSection(0, 20)
            horizontal_header.setSectionResizeMode(1, QtWidgets.QHeaderView.ResizeToContents)
            horizontal_header.setSectionResizeMode(2, QtWidgets.QHeaderView.Stretch)

        self.mark_table_rows_for_actions()

        self.app.defaults["global_bookmarks"].clear()
        for key, val in self.bm_dict.items():
            self.app.defaults["global_bookmarks"][key] = deepcopy(val)

    def on_add_entry(self, **kwargs):
        """
        Add a entry in the Bookmark Table and in the menu actions
        :return: None
        """
        if 'title' in kwargs:
            title = kwargs['title']
        else:
            title = self.title_entry.get_value()
        if title == '':
            self.app.inform.emit(f'[ERROR_NOTCL] {_("Title entry is empty.")}')
            return 'fail'

        if 'link' is kwargs:
            link = kwargs['link']
        else:
            link = self.link_entry.get_value()

        if link == 'http://':
            self.app.inform.emit(f'[ERROR_NOTCL] {_("Web link entry is empty.")}')
            return 'fail'

        # if 'http' not in link or 'https' not in link:
        #     link = 'http://' + link

        for bookmark in self.bm_dict.values():
            if title == bookmark[0] or link == bookmark[1]:
                self.app.inform.emit(f'[ERROR_NOTCL] {_("Either the Title or the Weblink already in the table.")}')
                return 'fail'

        # for some reason if the last char in the weblink is a slash it does not make the link clickable
        # so I remove it
        if link[-1] == '/':
            link = link[:-1]
        # add the new entry to storage
        new_entry = len(self.bm_dict) + 1
        self.bm_dict[str(new_entry)] = [title, link]

        # add the link to the menu but only if it is within the set limit
        bm_limit = int(self.app.defaults["global_bookmarks_limit"])
        if len(self.bm_dict) < bm_limit:
            act = QtWidgets.QAction(parent=self.app.ui.menuhelp_bookmarks)
            act.setText(title)
            act.setIcon(QtGui.QIcon('share/link16.png'))
            act.triggered.connect(lambda: webbrowser.open(link))
            self.app.ui.menuhelp_bookmarks.insertAction(self.app.ui.menuhelp_bookmarks_manager, act)

        self.app.inform.emit(f'[success] {_("Bookmark added.")}')

        # add the new entry to the bookmark manager table
        self.build_bm_ui()

    def on_remove_entry(self):
        """
        Remove an Entry in the Bookmark table and from the menu actions
        :return:
        """
        index_list = []
        for model_index in self.table_widget.selectionModel().selectedRows():
            index = QtCore.QPersistentModelIndex(model_index)
            index_list.append(index)
            title_to_remove = self.table_widget.item(model_index.row(), 1).text()

            if title_to_remove == 'FlatCAM' or title_to_remove == 'Backup Site':
                self.app.inform.emit('[WARNING_NOTCL] %s.' % _("This bookmark can not be removed"))
                self.build_bm_ui()
                return
            else:
                for k, bookmark in list(self.bm_dict.items()):
                    if title_to_remove == bookmark[0]:
                        # remove from the storage
                        self.bm_dict.pop(k, None)

                        for act in self.app.ui.menuhelp_bookmarks.actions():
                            if act.text() == title_to_remove:
                                # disconnect the signal
                                try:
                                    act.triggered.disconnect()
                                except TypeError:
                                    pass
                                # remove the action from the menu
                                self.app.ui.menuhelp_bookmarks.removeAction(act)

        # house keeping: it pays to have keys increased by one
        new_key = 0
        new_dict = dict()
        for k, v in self.bm_dict.items():
            # we start with key 1 so we can use the len(self.bm_dict)
            # when adding bookmarks (keys in bm_dict)
            new_key += 1
            new_dict[str(new_key)] = v

        self.bm_dict = deepcopy(new_dict)
        new_dict.clear()

        self.app.inform.emit(f'[success] {_("Bookmark removed.")}')

        # for index in index_list:
        #     self.table_widget.model().removeRow(index.row())
        self.build_bm_ui()

    def on_export_bookmarks(self):
        self.app.report_usage("on_export_bookmarks")
        self.app.log.debug("on_export_bookmarks()")

        date = str(datetime.today()).rpartition('.')[0]
        date = ''.join(c for c in date if c not in ':-')
        date = date.replace(' ', '_')

        filter__ = "Text File (*.TXT);;All Files (*.*)"
        filename, _f = QtWidgets.QFileDialog.getSaveFileName(caption=_("Export FlatCAM Preferences"),
                                                             directory='{l_save}/FlatCAM_{n}_{date}'.format(
                                                                 l_save=str(self.app.get_last_save_folder()),
                                                                 n=_("Bookmarks"),
                                                                 date=date),
                                                             filter=filter__)

        filename = str(filename)

        if filename == "":
            self.app.inform.emit('[WARNING_NOTCL] %s' % _("FlatCAM bookmarks export cancelled."))
            return
        else:
            try:
                f = open(filename, 'w')
                f.close()
            except PermissionError:
                self.app.inform.emit('[WARNING] %s' %
                                     _("Permission denied, saving not possible.\n"
                                       "Most likely another app is holding the file open and not accessible."))
                return
            except IOError:
                self.app.log.debug('Creating a new bookmarks file ...')
                f = open(filename, 'w')
                f.close()
            except:
                e = sys.exc_info()[0]
                self.app.log.error("Could not load defaults file.")
                self.app.log.error(str(e))
                self.app.inform.emit('[ERROR_NOTCL] %s' %
                                     _("Could not load bookmarks file."))
                return

            # Save update options
            try:
                with open(filename, "w") as f:
                    for title, link in self.bm_dict.items():
                        line2write = str(title) + ':' + str(link) + '\n'
                        f.write(line2write)
            except:
                self.app.inform.emit('[ERROR_NOTCL] %s' %
                                     _("Failed to write bookmarks to file."))
                return
        self.app.inform.emit('[success] %s: %s' %
                             (_("Exported bookmarks to"), filename))

    def on_import_bookmarks(self):
        self.app.log.debug("on_import_bookmarks()")

        filter_ = "Text File (*.txt);;All Files (*.*)"
        filename, _f = QtWidgets.QFileDialog.getOpenFileName(caption=_("Import FlatCAM Bookmarks"),
                                                             filter=filter_)

        filename = str(filename)

        if filename == "":
            self.app.inform.emit('[WARNING_NOTCL] %s' %
                                 _("FlatCAM bookmarks import cancelled."))
        else:
            try:
                with open(filename) as f:
                    bookmarks = f.readlines()
            except IOError:
                self.app.log.error("Could not load bookmarks file.")
                self.app.inform.emit('[ERROR_NOTCL] %s' %
                                     _("Could not load bookmarks file."))
                return

            for line in bookmarks:
                proc_line = line.replace(' ', '').partition(':')
                self.on_add_entry(title=proc_line[0], link=proc_line[2])

            self.app.inform.emit('[success] %s: %s' %
                                 (_("Imported Bookmarks from"), filename))

    def mark_table_rows_for_actions(self):
        for row in range(self.table_widget.rowCount()):
            item_to_paint = self.table_widget.item(row, 0)
            if row < self.app.defaults["global_bookmarks_limit"]:
                item_to_paint.setBackground(QtGui.QColor('gray'))
                # item_to_paint.setForeground(QtGui.QColor('black'))
            else:
                item_to_paint.setBackground(QtGui.QColor('white'))
                # item_to_paint.setForeground(QtGui.QColor('black'))

    def rebuild_actions(self):
        # rebuild the storage to reflect the order of the lines
        self.bm_dict.clear()
        for row in range(self.table_widget.rowCount()):
            title = self.table_widget.item(row, 1).text()
            wlink = self.table_widget.cellWidget(row, 2).toPlainText()

            entry = int(row) + 1
            self.bm_dict.update(
                {
                    str(entry): [title, wlink]
                }
            )

        self.app.install_bookmarks(book_dict=self.bm_dict)

    # def accept(self):
    #     self.rebuild_actions()
    #     super().accept()

    def closeEvent(self, QCloseEvent):
        self.rebuild_actions()
        super().closeEvent(QCloseEvent)


class ToolsDB(QtWidgets.QWidget):

    mark_tools_rows = QtCore.pyqtSignal()

    def __init__(self, app, parent=None):
        super(ToolsDB, self).__init__(parent)

        self.app = app
        self.decimals = 4

        # layouts
        layout = QtWidgets.QVBoxLayout()
        self.setLayout(layout)

        table_hlay = QtWidgets.QHBoxLayout()
        layout.addLayout(table_hlay)

        self.table_widget = FCTable(drag_drop=True)
        self.table_widget.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
        table_hlay.addWidget(self.table_widget)

        self.table_widget.setColumnCount(21)
        # self.table_widget.setColumnWidth(0, 20)
        self.table_widget.setHorizontalHeaderLabels(
            [
                '#',
                _("Tool Diameter"),
                _("Tool Type"),
                _("Tool Shape"),
                _("Cut Z"),
                _("V-Tip Diameter"),
                _("V-Tip Angle"),
                _("Travel Z"),
                _("Feedrate"),
                _("Feedrate Z"),
                _("Feedrate Rapids"),
                _("Spindle Speed"),
                _("Dwell"),
                _("Dwelltime"),
                _("MultiDepth"),
                _("Postprocessor"),
                _("Probe Z"),
                _("Probe Feedrate"),
                _("ExtraCut"),
                _("Toolchange"),
                _("Toolchange Z"),
                _("End Z"),
            ]
        )
        self.table_widget.horizontalHeaderItem(0).setToolTip(
            _("Index.\n"
              "The rows in gray color will populate the Bookmarks menu.\n"
              "The number of gray colored rows is set in Preferences."))

        # pal = QtGui.QPalette()
        # pal.setColor(QtGui.QPalette.Background, Qt.white)

        # New Bookmark
        new_vlay = QtWidgets.QVBoxLayout()
        layout.addLayout(new_vlay)

        new_tool_lbl = QtWidgets.QLabel('<b>%s</b>' % _("New Tool"))
        new_vlay.addWidget(new_tool_lbl)

        form0 = QtWidgets.QFormLayout()
        new_vlay.addLayout(form0)

        diameter_lbl = QtWidgets.QLabel('%s:' % _("Diameter"))
        self.dia_entry = FCDoubleSpinner()
        self.dia_entry.set_precision(self.decimals)
        self.dia_entry.set_range(0.000001, 9999.9999)
        form0.addRow(diameter_lbl, self.dia_entry)

        link_lbl = QtWidgets.QLabel('%s:' % _("Web Link"))
        self.link_entry = FCEntry()
        self.link_entry.set_value('http://')
        form0.addRow(link_lbl, self.link_entry)

        # Buttons Layout
        button_hlay = QtWidgets.QHBoxLayout()
        layout.addLayout(button_hlay)

        add_entry_btn = FCButton(_("Add Tool"))
        remove_entry_btn = FCButton(_("Remove Tool"))
        export_list_btn = FCButton(_("Export List"))
        import_list_btn = FCButton(_("Import List"))
        closebtn = QtWidgets.QPushButton(_("Close"))

        # button_hlay.addStretch()
        button_hlay.addWidget(add_entry_btn)
        button_hlay.addWidget(remove_entry_btn)

        button_hlay.addWidget(export_list_btn)
        button_hlay.addWidget(import_list_btn)
        # button_hlay.addWidget(closebtn)
        # ##############################################################################
        # ######################## SIGNALS #############################################
        # ##############################################################################

        add_entry_btn.clicked.connect(self.on_add_entry)
        remove_entry_btn.clicked.connect(self.on_remove_entry)
        export_list_btn.clicked.connect(self.on_export_bookmarks)
        import_list_btn.clicked.connect(self.on_import_bookmarks)
        self.dia_entry.returnPressed.connect(self.on_add_entry)
        self.link_entry.returnPressed.connect(self.on_add_entry)
        # closebtn.clicked.connect(self.accept)

        self.bm_dict = {
            1: 'tool'
        }

        self.build_bm_ui()

    def build_bm_ui(self):

        self.table_widget.setRowCount(len(self.bm_dict))

        nr_crt = 0
        sorted_bookmarks = sorted(list(self.bm_dict.items()), key=lambda x: int(x[0]))
        for k, v in sorted_bookmarks:
            row = nr_crt
            nr_crt += 1

            id_item = QtWidgets.QTableWidgetItem('%d' % int(nr_crt))
            id_item.setFlags(QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEnabled)
            self.table_widget.setItem(row, 0, id_item)  # Tool name/id

            dia_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 1, dia_item)

            tt_item = FCComboBox()
            self.table_widget.setCellWidget(row, 2, tt_item)

            tshape_item = FCComboBox()
            self.table_widget.setCellWidget(row, 3, tshape_item)

            cutz_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 4, cutz_item)

            vtip_dia_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 5, vtip_dia_item)

            vtip_angle_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 6, vtip_angle_item)

            travelz_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 7, travelz_item)

            fr_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 8, fr_item)

            frz_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 9, frz_item)

            frrapids_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 10, frrapids_item)

            spindlespeed_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 11, spindlespeed_item)

            dwell_item = FCCheckBox()
            self.table_widget.setCellWidget(row, 12, dwell_item)

            dwelltime_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 13, dwelltime_item)

            multidepth_item = FCCheckBox()
            self.table_widget.setCellWidget(row, 14, multidepth_item)

            pp_item = FCComboBox()
            self.table_widget.setCellWidget(row, 15, pp_item)

            probez_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 16, probez_item)

            probefeedrate_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 17, probefeedrate_item)

            ecut_item = FCCheckBox()
            self.table_widget.setCellWidget(row, 18, ecut_item)

            toolchange_item = FCCheckBox()
            self.table_widget.setCellWidget(row, 19, toolchange_item)

            toolchangez_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 20, toolchangez_item)

            endz_item = FCDoubleSpinner()
            self.table_widget.setCellWidget(row, 21, endz_item)

            vertical_header = self.table_widget.verticalHeader()
            vertical_header.hide()

            horizontal_header = self.table_widget.horizontalHeader()
            horizontal_header.setMinimumSectionSize(10)
            horizontal_header.setDefaultSectionSize(70)

            self.table_widget.setSizeAdjustPolicy(
                QtWidgets.QAbstractScrollArea.AdjustToContents)
            for x in range(1, 21):
                self.table_widget.resizeColumnsToContents()

            horizontal_header.setSectionResizeMode(0, QtWidgets.QHeaderView.Fixed)
            horizontal_header.setSectionResizeMode(1, QtWidgets.QHeaderView.Stretch)
            horizontal_header.setSectionResizeMode(13, QtWidgets.QHeaderView.Fixed)
            horizontal_header.setSectionResizeMode(15, QtWidgets.QHeaderView.Fixed)
            horizontal_header.setSectionResizeMode(19, QtWidgets.QHeaderView.Fixed)
            horizontal_header.setSectionResizeMode(20, QtWidgets.QHeaderView.Fixed)

            horizontal_header.resizeSection(0, 20)
            # horizontal_header.setSectionResizeMode(1, QtWidgets.QHeaderView.ResizeToContents)
            # horizontal_header.setSectionResizeMode(2, QtWidgets.QHeaderView.Stretch)

    def on_add_entry(self, **kwargs):
        """
        Add a entry in the Bookmark Table and in the menu actions
        :return: None
        """
        if 'title' in kwargs:
            title = kwargs['title']
        else:
            title = self.title_entry.get_value()
        if title == '':
            self.app.inform.emit(f'[ERROR_NOTCL] {_("Title entry is empty.")}')
            return 'fail'

        if 'link' is kwargs:
            link = kwargs['link']
        else:
            link = self.link_entry.get_value()

        if link == 'http://':
            self.app.inform.emit(f'[ERROR_NOTCL] {_("Web link entry is empty.")}')
            return 'fail'

        # if 'http' not in link or 'https' not in link:
        #     link = 'http://' + link

        for bookmark in self.bm_dict.values():
            if title == bookmark[0] or link == bookmark[1]:
                self.app.inform.emit(f'[ERROR_NOTCL] {_("Either the Title or the Weblink already in the table.")}')
                return 'fail'

        # for some reason if the last char in the weblink is a slash it does not make the link clickable
        # so I remove it
        if link[-1] == '/':
            link = link[:-1]
        # add the new entry to storage
        new_entry = len(self.bm_dict) + 1
        self.bm_dict[str(new_entry)] = [title, link]

        # add the link to the menu but only if it is within the set limit
        bm_limit = int(self.app.defaults["global_bookmarks_limit"])
        if len(self.bm_dict) < bm_limit:
            act = QtWidgets.QAction(parent=self.app.ui.menuhelp_bookmarks)
            act.setText(title)
            act.setIcon(QtGui.QIcon('share/link16.png'))
            act.triggered.connect(lambda: webbrowser.open(link))
            self.app.ui.menuhelp_bookmarks.insertAction(self.app.ui.menuhelp_bookmarks_manager, act)

        self.app.inform.emit(f'[success] {_("Bookmark added.")}')

        # add the new entry to the bookmark manager table
        self.build_bm_ui()

    def on_remove_entry(self):
        """
        Remove an Entry in the Bookmark table and from the menu actions
        :return:
        """
        index_list = []
        for model_index in self.table_widget.selectionModel().selectedRows():
            index = QtCore.QPersistentModelIndex(model_index)
            index_list.append(index)
            title_to_remove = self.table_widget.item(model_index.row(), 1).text()

            if title_to_remove == 'FlatCAM' or title_to_remove == 'Backup Site':
                self.app.inform.emit('[WARNING_NOTCL] %s.' % _("This bookmark can not be removed"))
                self.build_bm_ui()
                return
            else:
                for k, bookmark in list(self.bm_dict.items()):
                    if title_to_remove == bookmark[0]:
                        # remove from the storage
                        self.bm_dict.pop(k, None)

                        for act in self.app.ui.menuhelp_bookmarks.actions():
                            if act.text() == title_to_remove:
                                # disconnect the signal
                                try:
                                    act.triggered.disconnect()
                                except TypeError:
                                    pass
                                # remove the action from the menu
                                self.app.ui.menuhelp_bookmarks.removeAction(act)

        # house keeping: it pays to have keys increased by one
        new_key = 0
        new_dict = dict()
        for k, v in self.bm_dict.items():
            # we start with key 1 so we can use the len(self.bm_dict)
            # when adding bookmarks (keys in bm_dict)
            new_key += 1
            new_dict[str(new_key)] = v

        self.bm_dict = deepcopy(new_dict)
        new_dict.clear()

        self.app.inform.emit(f'[success] {_("Bookmark removed.")}')

        # for index in index_list:
        #     self.table_widget.model().removeRow(index.row())
        self.build_bm_ui()

    def on_export_bookmarks(self):
        self.app.report_usage("on_export_bookmarks")
        self.app.log.debug("on_export_bookmarks()")

        date = str(datetime.today()).rpartition('.')[0]
        date = ''.join(c for c in date if c not in ':-')
        date = date.replace(' ', '_')

        filter__ = "Text File (*.TXT);;All Files (*.*)"
        filename, _f = QtWidgets.QFileDialog.getSaveFileName(caption=_("Export FlatCAM Preferences"),
                                                             directory='{l_save}/FlatCAM_{n}_{date}'.format(
                                                                 l_save=str(self.app.get_last_save_folder()),
                                                                 n=_("Bookmarks"),
                                                                 date=date),
                                                             filter=filter__)

        filename = str(filename)

        if filename == "":
            self.app.inform.emit('[WARNING_NOTCL] %s' % _("FlatCAM bookmarks export cancelled."))
            return
        else:
            try:
                f = open(filename, 'w')
                f.close()
            except PermissionError:
                self.app.inform.emit('[WARNING] %s' %
                                     _("Permission denied, saving not possible.\n"
                                       "Most likely another app is holding the file open and not accessible."))
                return
            except IOError:
                self.app.log.debug('Creating a new bookmarks file ...')
                f = open(filename, 'w')
                f.close()
            except:
                e = sys.exc_info()[0]
                self.app.log.error("Could not load defaults file.")
                self.app.log.error(str(e))
                self.app.inform.emit('[ERROR_NOTCL] %s' %
                                     _("Could not load bookmarks file."))
                return

            # Save update options
            try:
                with open(filename, "w") as f:
                    for title, link in self.bm_dict.items():
                        line2write = str(title) + ':' + str(link) + '\n'
                        f.write(line2write)
            except:
                self.app.inform.emit('[ERROR_NOTCL] %s' %
                                     _("Failed to write bookmarks to file."))
                return
        self.app.inform.emit('[success] %s: %s' %
                             (_("Exported bookmarks to"), filename))

    def on_import_bookmarks(self):
        self.app.log.debug("on_import_bookmarks()")

        filter_ = "Text File (*.txt);;All Files (*.*)"
        filename, _f = QtWidgets.QFileDialog.getOpenFileName(caption=_("Import FlatCAM Bookmarks"),
                                                             filter=filter_)

        filename = str(filename)

        if filename == "":
            self.app.inform.emit('[WARNING_NOTCL] %s' %
                                 _("FlatCAM bookmarks import cancelled."))
        else:
            try:
                with open(filename) as f:
                    bookmarks = f.readlines()
            except IOError:
                self.app.log.error("Could not load bookmarks file.")
                self.app.inform.emit('[ERROR_NOTCL] %s' %
                                     _("Could not load bookmarks file."))
                return

            for line in bookmarks:
                proc_line = line.replace(' ', '').partition(':')
                self.on_add_entry(title=proc_line[0], link=proc_line[2])

            self.app.inform.emit('[success] %s: %s' %
                                 (_("Imported Bookmarks from"), filename))

    def rebuild_actions(self):
        # rebuild the storage to reflect the order of the lines
        self.bm_dict.clear()
        for row in range(self.table_widget.rowCount()):
            title = self.table_widget.item(row, 1).text()
            wlink = self.table_widget.cellWidget(row, 2).toPlainText()

            entry = int(row) + 1
            self.bm_dict.update(
                {
                    str(entry): [title, wlink]
                }
            )

        self.app.install_bookmarks(book_dict=self.bm_dict)

    # def accept(self):
    #     self.rebuild_actions()
    #     super().accept()

    def closeEvent(self, QCloseEvent):
        self.rebuild_actions()
        super().closeEvent(QCloseEvent)