def select_image_file_dialog_new_file_test(self):
"""
Test the select image file dialog when the user presses ok
"""
# GIVEN: An instance of Theme Form and mocked QFileDialog which returns a file path
with patch('openlp.core.ui.ThemeForm._setup'),\
patch('openlp.core.ui.themeform.get_images_filter',
**{'return_value': 'Image Files (*.bmp; *.gif)(*.bmp *.gif)'}),\
patch('openlp.core.ui.themeform.QtGui.QFileDialog.getOpenFileName',
**{'return_value': '/new_path/file.ext'}) as mocked_get_open_file_name,\
patch('openlp.core.ui.themeform.translate', **{'return_value': 'Translated String'}),\
patch('openlp.core.ui.ThemeForm.set_background_page_values') as mocked_background_page_values:
instance = ThemeForm(None)
mocked_image_file_edit = MagicMock()
mocked_image_file_edit.text.return_value = '/original_path/file.ext'
instance.image_file_edit = mocked_image_file_edit
instance.theme = MagicMock()
# WHEN: on_image_browse_button is clicked
instance.on_image_browse_button_clicked()
# THEN: The QFileDialog getOpenFileName and set_background_page_values moethods should have been called
# with known arguments and theme.background_filename should be set
mocked_get_open_file_name.assert_called_once_with(instance, 'Translated String', '/original_path/file.ext',
'Image Files (*.bmp; *.gif)(*.bmp *.gif);;'
'All Files (*.*)')
self.assertEqual(instance.theme.background_filename, '/new_path/file.ext',
'theme.background_filename should be set to the path that the file dialog returns')
mocked_background_page_values.assert_called_once_with()
class TestThemeManager(TestCase):
"""
Test the functions in the ThemeManager Class
"""
def setUp(self):
with patch('openlp.core.ui.ThemeForm._setup'):
self.instance = ThemeForm(None)
def test_on_image_path_edit_path_changed(self):
"""
Test the `image_path_edit.pathChanged` handler
"""
# GIVEN: An instance of Theme Form
with patch.object(self.instance, 'set_background_page_values'
) as mocked_set_background_page_values:
self.instance.theme = MagicMock()
# WHEN: `on_image_path_edit_path_changed` is clicked
self.instance.on_image_path_edit_path_changed(
Path('/', 'new', 'pat.h'))
# THEN: The theme background file should be set and `set_background_page_values` should have been called
assert self.instance.theme.background_filename == Path(
'/', 'new', 'pat.h')
mocked_set_background_page_values.assert_called_once_with()
def select_image_file_dialog_cancelled_test(self):
"""
Test the select image file dialog when the user presses cancel
"""
# GIVEN: An instance of Theme Form and mocked QFileDialog which returns an empty string (similating a user
# pressing cancel)
with patch('openlp.core.ui.ThemeForm._setup'),\
patch('openlp.core.ui.themeform.get_images_filter',
**{'return_value': 'Image Files (*.bmp; *.gif)(*.bmp *.gif)'}),\
patch('openlp.core.ui.themeform.QtGui.QFileDialog.getOpenFileName',
**{'return_value': ''}) as mocked_get_open_file_name,\
patch('openlp.core.ui.themeform.translate', **{'return_value': 'Translated String'}),\
patch('openlp.core.ui.ThemeForm.set_background_page_values') as mocked_set_background_page_values:
instance = ThemeForm(None)
mocked_image_file_edit = MagicMock()
mocked_image_file_edit.text.return_value = '/original_path/file.ext'
instance.image_file_edit = mocked_image_file_edit
# WHEN: on_image_browse_button is clicked
instance.on_image_browse_button_clicked()
# THEN: The QFileDialog getOpenFileName and set_background_page_values moethods should have been called
# with known arguments
mocked_get_open_file_name.assert_called_once_with(instance, 'Translated String', '/original_path/file.ext',
'Image Files (*.bmp; *.gif)(*.bmp *.gif);;'
'All Files (*.*)')
mocked_set_background_page_values.assert_called_once_with()
def test_select_image_file_dialog_cancelled(self):
"""
Test the select image file dialog when the user presses cancel
"""
# GIVEN: An instance of Theme Form and mocked QFileDialog which returns an empty string (similating a user
# pressing cancel)
with patch('openlp.core.ui.ThemeForm._setup'),\
patch('openlp.core.ui.themeform.get_images_filter',
**{'return_value': 'Image Files (*.bmp; *.gif)(*.bmp *.gif)'}),\
patch('openlp.core.ui.themeform.QtWidgets.QFileDialog.getOpenFileName',
**{'return_value': ('', '')}) as mocked_get_open_file_name,\
patch('openlp.core.ui.themeform.translate', **{'return_value': 'Translated String'}),\
patch('openlp.core.ui.ThemeForm.set_background_page_values') as mocked_set_background_page_values:
instance = ThemeForm(None)
mocked_image_file_edit = MagicMock()
mocked_image_file_edit.text.return_value = '/original_path/file.ext'
instance.image_file_edit = mocked_image_file_edit
# WHEN: on_image_browse_button is clicked
instance.on_image_browse_button_clicked()
# THEN: The QFileDialog getOpenFileName and set_background_page_values moethods should have been called
# with known arguments
mocked_get_open_file_name.assert_called_once_with(instance, 'Translated String', '/original_path/file.ext',
'Image Files (*.bmp; *.gif)(*.bmp *.gif);;'
'All Files (*.*)')
mocked_set_background_page_values.assert_called_once_with()
def bootstrap_post_set_up(self):
"""
process the bootstrap post setup request
"""
self.theme_form = ThemeForm(self)
self.theme_form.path = self.theme_path
self.file_rename_form = FileRenameForm()
Registry().register_function('theme_update_global', self.change_global_from_tab)
self.load_themes()
def bootstrap_post_set_up(self):
"""
process the bootstrap post setup request
"""
self.theme_form = ThemeForm(self)
self.theme_form.path = self.path
self.file_rename_form = FileRenameForm()
Registry().register_function('theme_update_global', self.change_global_from_tab)
self.load_themes()
def test_select_image_file_dialog_new_file(self):
"""
Test the select image file dialog when the user presses ok
"""
# GIVEN: An instance of Theme Form and mocked QFileDialog which returns a file path
with patch('openlp.core.ui.ThemeForm._setup'),\
patch('openlp.core.ui.themeform.get_images_filter',
**{'return_value': 'Image Files (*.bmp; *.gif)(*.bmp *.gif)'}),\
patch('openlp.core.ui.themeform.QtWidgets.QFileDialog.getOpenFileName',
**{'return_value': ('/new_path/file.ext', '')}) as mocked_get_open_file_name,\
patch('openlp.core.ui.themeform.translate', **{'return_value': 'Translated String'}),\
patch('openlp.core.ui.ThemeForm.set_background_page_values') as mocked_background_page_values:
instance = ThemeForm(None)
mocked_image_file_edit = MagicMock()
mocked_image_file_edit.text.return_value = '/original_path/file.ext'
instance.image_file_edit = mocked_image_file_edit
instance.theme = MagicMock()
# WHEN: on_image_browse_button is clicked
instance.on_image_browse_button_clicked()
# THEN: The QFileDialog getOpenFileName and set_background_page_values moethods should have been called
# with known arguments and theme.background_filename should be set
mocked_get_open_file_name.assert_called_once_with(
instance, 'Translated String', '/original_path/file.ext',
'Image Files (*.bmp; *.gif)(*.bmp *.gif);;'
'All Files (*.*)')
self.assertEqual(
instance.theme.background_filename, '/new_path/file.ext',
'theme.background_filename should be set to the path that the file dialog returns'
)
mocked_background_page_values.assert_called_once_with()
class ThemeManager(OpenLPMixin, RegistryMixin, QtWidgets.QWidget,
Ui_ThemeManager, RegistryProperties):
"""
Manages the orders of Theme.
"""
def __init__(self, parent=None):
"""
Constructor
"""
super(ThemeManager, self).__init__(parent)
self.settings_section = 'themes'
# Variables
self.theme_list = []
self.old_background_image = None
def bootstrap_initialise(self):
"""
process the bootstrap initialise setup request
"""
self.setup_ui(self)
self.global_theme = Settings().value(self.settings_section +
'/global theme')
self.build_theme_path()
self.load_first_time_themes()
def bootstrap_post_set_up(self):
"""
process the bootstrap post setup request
"""
self.theme_form = ThemeForm(self)
self.theme_form.path = self.path
self.file_rename_form = FileRenameForm()
Registry().register_function('theme_update_global',
self.change_global_from_tab)
self.load_themes()
def build_theme_path(self):
"""
Set up the theme path variables
"""
self.path = AppLocation.get_section_data_path(self.settings_section)
check_directory_exists(self.path)
self.thumb_path = os.path.join(self.path, 'thumbnails')
check_directory_exists(self.thumb_path)
def check_list_state(self, item, field=None):
"""
If Default theme selected remove delete button.
Note for some reason a dummy field is required. Nothing is passed!
:param field:
:param item: Service Item to process
"""
if item is None:
return
real_theme_name = item.data(QtCore.Qt.UserRole)
theme_name = item.text()
# If default theme restrict actions
if real_theme_name == theme_name:
self.delete_toolbar_action.setVisible(True)
else:
self.delete_toolbar_action.setVisible(False)
def context_menu(self, point):
"""
Build the Right Click Context menu and set state depending on the type of theme.
:param point: The position of the mouse so the correct item can be found.
"""
item = self.theme_list_widget.itemAt(point)
if item is None:
return
real_theme_name = item.data(QtCore.Qt.UserRole)
theme_name = str(item.text())
visible = real_theme_name == theme_name
self.delete_action.setVisible(visible)
self.rename_action.setVisible(visible)
self.global_action.setVisible(visible)
self.menu.exec(self.theme_list_widget.mapToGlobal(point))
def change_global_from_tab(self):
"""
Change the global theme when it is changed through the Themes settings tab
"""
self.global_theme = Settings().value(self.settings_section +
'/global theme')
self.log_debug('change_global_from_tab %s' % self.global_theme)
for count in range(0, self.theme_list_widget.count()):
# reset the old name
item = self.theme_list_widget.item(count)
old_name = item.text()
new_name = item.data(QtCore.Qt.UserRole)
if old_name != new_name:
self.theme_list_widget.item(count).setText(new_name)
# Set the new name
if self.global_theme == new_name:
name = translate('OpenLP.ThemeManager',
'%s (default)') % new_name
self.theme_list_widget.item(count).setText(name)
self.delete_toolbar_action.setVisible(
item not in self.theme_list_widget.selectedItems())
def change_global_from_screen(self, index=-1):
"""
Change the global theme when a theme is double clicked upon in the Theme Manager list.
:param index:
"""
selected_row = self.theme_list_widget.currentRow()
for count in range(0, self.theme_list_widget.count()):
item = self.theme_list_widget.item(count)
old_name = item.text()
# reset the old name
if old_name != item.data(QtCore.Qt.UserRole):
self.theme_list_widget.item(count).setText(
item.data(QtCore.Qt.UserRole))
# Set the new name
if count == selected_row:
self.global_theme = self.theme_list_widget.item(count).text()
name = translate('OpenLP.ThemeManager',
'%s (default)') % self.global_theme
self.theme_list_widget.item(count).setText(name)
Settings().setValue(self.settings_section + '/global theme',
self.global_theme)
Registry().execute('theme_update_global')
self._push_themes()
def on_add_theme(self, field=None):
"""
Loads a new theme with the default settings and then launches the theme editing form for the user to make
their customisations.
:param field:
"""
theme = ThemeXML()
theme.set_default_header_footer()
self.theme_form.theme = theme
self.theme_form.exec()
self.load_themes()
def on_rename_theme(self, field=None):
"""
Renames an existing theme to a new name
:param field:
"""
if self._validate_theme_action(
translate('OpenLP.ThemeManager',
'You must select a theme to rename.'),
translate('OpenLP.ThemeManager', 'Rename Confirmation'),
translate('OpenLP.ThemeManager', 'Rename %s theme?'), False,
False):
item = self.theme_list_widget.currentItem()
old_theme_name = item.data(QtCore.Qt.UserRole)
self.file_rename_form.file_name_edit.setText(old_theme_name)
if self.file_rename_form.exec():
new_theme_name = self.file_rename_form.file_name_edit.text()
if old_theme_name == new_theme_name:
return
if self.check_if_theme_exists(new_theme_name):
old_theme_data = self.get_theme_data(old_theme_name)
self.clone_theme_data(old_theme_data, new_theme_name)
self.delete_theme(old_theme_name)
for plugin in self.plugin_manager.plugins:
if plugin.uses_theme(old_theme_name):
plugin.rename_theme(old_theme_name, new_theme_name)
self.renderer.update_theme(new_theme_name, old_theme_name)
self.load_themes()
def on_copy_theme(self, field=None):
"""
Copies an existing theme to a new name
:param field:
"""
item = self.theme_list_widget.currentItem()
old_theme_name = item.data(QtCore.Qt.UserRole)
self.file_rename_form.file_name_edit.setText(
translate('OpenLP.ThemeManager', 'Copy of %s',
'Copy of <theme name>') % old_theme_name)
if self.file_rename_form.exec(True):
new_theme_name = self.file_rename_form.file_name_edit.text()
if self.check_if_theme_exists(new_theme_name):
theme_data = self.get_theme_data(old_theme_name)
self.clone_theme_data(theme_data, new_theme_name)
def clone_theme_data(self, theme_data, new_theme_name):
"""
Takes a theme and makes a new copy of it as well as saving it.
:param theme_data: The theme to be used
:param new_theme_name: The new theme name to save the data to
"""
save_to = None
save_from = None
if theme_data.background_type == 'image':
save_to = os.path.join(
self.path, new_theme_name,
os.path.split(str(theme_data.background_filename))[1])
save_from = theme_data.background_filename
theme_data.theme_name = new_theme_name
theme_data.extend_image_filename(self.path)
self.save_theme(theme_data, save_from, save_to)
self.load_themes()
def on_edit_theme(self, field=None):
"""
Loads the settings for the theme that is to be edited and launches the
theme editing form so the user can make their changes.
:param field:
"""
if check_item_selected(
self.theme_list_widget,
translate('OpenLP.ThemeManager',
'You must select a theme to edit.')):
item = self.theme_list_widget.currentItem()
theme = self.get_theme_data(item.data(QtCore.Qt.UserRole))
if theme.background_type == 'image':
self.old_background_image = theme.background_filename
self.theme_form.theme = theme
self.theme_form.exec(True)
self.old_background_image = None
self.renderer.update_theme(theme.theme_name)
self.load_themes()
def on_delete_theme(self, field=None):
"""
Delete a theme triggered by the UI.
:param field:
"""
if self._validate_theme_action(
translate('OpenLP.ThemeManager',
'You must select a theme to delete.'),
translate('OpenLP.ThemeManager', 'Delete Confirmation'),
translate('OpenLP.ThemeManager', 'Delete %s theme?')):
item = self.theme_list_widget.currentItem()
theme = item.text()
row = self.theme_list_widget.row(item)
self.theme_list_widget.takeItem(row)
self.delete_theme(theme)
self.renderer.update_theme(theme, only_delete=True)
# As we do not reload the themes, push out the change. Reload the
# list as the internal lists and events need to be triggered.
self._push_themes()
def delete_theme(self, theme):
"""
Delete a theme.
:param theme: The theme to delete.
"""
self.theme_list.remove(theme)
thumb = '%s.png' % theme
delete_file(os.path.join(self.path, thumb))
delete_file(os.path.join(self.thumb_path, thumb))
try:
# Windows is always unicode, so no need to encode filenames
if is_win():
shutil.rmtree(os.path.join(self.path, theme))
else:
encoding = get_filesystem_encoding()
shutil.rmtree(os.path.join(self.path, theme).encode(encoding))
except OSError as os_error:
shutil.Error = os_error
self.log_exception('Error deleting theme %s' % theme)
def on_export_theme(self, field=None):
"""
Export the theme in a zip file
:param field:
"""
item = self.theme_list_widget.currentItem()
if item is None:
critical_error_message_box(message=translate(
'OpenLP.ThemeManager', 'You have not selected a theme.'))
return
theme = item.data(QtCore.Qt.UserRole)
path = QtWidgets.QFileDialog.getExistingDirectory(
self,
translate('OpenLP.ThemeManager', 'Save Theme - (%s)') % theme,
Settings().value(self.settings_section + '/last directory export'))
self.application.set_busy_cursor()
if path:
Settings().setValue(
self.settings_section + '/last directory export', path)
if self._export_theme(path, theme):
QtWidgets.QMessageBox.information(
self, translate('OpenLP.ThemeManager', 'Theme Exported'),
translate('OpenLP.ThemeManager',
'Your theme has been successfully exported.'))
self.application.set_normal_cursor()
def _export_theme(self, path, theme):
"""
Create the zipfile with the theme contents.
:param path: Location where the zip file will be placed
:param theme: The name of the theme to be exported
"""
theme_path = os.path.join(path, theme + '.otz')
theme_zip = None
try:
theme_zip = zipfile.ZipFile(theme_path, 'w')
source = os.path.join(self.path, theme)
for files in os.walk(source):
for name in files[2]:
theme_zip.write(os.path.join(source, name),
os.path.join(theme, name))
theme_zip.close()
return True
except OSError as ose:
self.log_exception('Export Theme Failed')
critical_error_message_box(
translate('OpenLP.ThemeManager', 'Theme Export Failed'),
translate(
'OpenLP.ThemeManager',
'The theme export failed because this error '
'occurred: %s') % ose.strerror)
if theme_zip:
theme_zip.close()
shutil.rmtree(theme_path, True)
return False
def on_import_theme(self, field=None):
"""
Opens a file dialog to select the theme file(s) to import before attempting to extract OpenLP themes from
those files. This process will only load version 2 themes.
:param field:
"""
files = FileDialog.getOpenFileNames(
self, translate('OpenLP.ThemeManager', 'Select Theme Import File'),
Settings().value(self.settings_section + '/last directory import'),
translate('OpenLP.ThemeManager', 'OpenLP Themes (*.otz)'))
self.log_info('New Themes %s' % str(files))
if not files:
return
self.application.set_busy_cursor()
for file_name in files:
Settings().setValue(
self.settings_section + '/last directory import',
str(file_name))
self.unzip_theme(file_name, self.path)
self.load_themes()
self.application.set_normal_cursor()
def load_first_time_themes(self):
"""
Imports any themes on start up and makes sure there is at least one theme
"""
self.application.set_busy_cursor()
files = AppLocation.get_files(self.settings_section, '.otz')
for theme_file in files:
theme_file = os.path.join(self.path, theme_file)
self.unzip_theme(theme_file, self.path)
delete_file(theme_file)
files = AppLocation.get_files(self.settings_section, '.png')
# No themes have been found so create one
if not files:
theme = ThemeXML()
theme.theme_name = UiStrings().Default
self._write_theme(theme, None, None)
Settings().setValue(self.settings_section + '/global theme',
theme.theme_name)
self.application.set_normal_cursor()
def load_themes(self):
"""
Loads the theme lists and triggers updates across the whole system using direct calls or core functions and
events for the plugins.
The plugins will call back in to get the real list if they want it.
"""
self.theme_list = []
self.theme_list_widget.clear()
files = AppLocation.get_files(self.settings_section, '.png')
# Sort the themes by its name considering language specific
files.sort(key=lambda file_name: get_locale_key(str(file_name)))
# now process the file list of png files
for name in files:
# check to see file is in theme root directory
theme = os.path.join(self.path, name)
if os.path.exists(theme):
text_name = os.path.splitext(name)[0]
if text_name == self.global_theme:
name = translate('OpenLP.ThemeManager',
'%s (default)') % text_name
else:
name = text_name
thumb = os.path.join(self.thumb_path, '%s.png' % text_name)
item_name = QtWidgets.QListWidgetItem(name)
if validate_thumb(theme, thumb):
icon = build_icon(thumb)
else:
icon = create_thumb(theme, thumb)
item_name.setIcon(icon)
item_name.setData(QtCore.Qt.UserRole, text_name)
self.theme_list_widget.addItem(item_name)
self.theme_list.append(text_name)
self._push_themes()
def _push_themes(self):
"""
Notify listeners that the theme list has been updated
"""
Registry().execute('theme_update_list', self.get_themes())
def get_themes(self):
"""
Return the list of loaded themes
"""
return self.theme_list
def get_theme_data(self, theme_name):
"""
Returns a theme object from an XML file
:param theme_name: Name of the theme to load from file
:return: The theme object.
"""
self.log_debug('get theme data for theme %s' % theme_name)
xml_file = os.path.join(self.path, str(theme_name),
str(theme_name) + '.xml')
xml = get_text_file_string(xml_file)
if not xml:
self.log_debug('No theme data - using default theme')
return ThemeXML()
else:
return self._create_theme_from_xml(xml, self.path)
def over_write_message_box(self, theme_name):
"""
Display a warning box to the user that a theme already exists
:param theme_name: Name of the theme.
:return: Confirm if the theme is to be overwritten.
"""
ret = QtWidgets.QMessageBox.question(
self, translate('OpenLP.ThemeManager', 'Theme Already Exists'),
translate(
'OpenLP.ThemeManager',
'Theme %s already exists. Do you want to replace it?').replace(
'%s', theme_name),
QtWidgets.QMessageBox.StandardButtons(QtWidgets.QMessageBox.Yes
| QtWidgets.QMessageBox.No),
QtWidgets.QMessageBox.No)
return ret == QtWidgets.QMessageBox.Yes
def unzip_theme(self, file_name, directory):
"""
Unzip the theme, remove the preview file if stored. Generate a new preview file. Check the XML theme version
and upgrade if necessary.
:param file_name:
:param directory:
"""
self.log_debug('Unzipping theme %s' % file_name)
theme_zip = None
out_file = None
file_xml = None
abort_import = True
try:
theme_zip = zipfile.ZipFile(file_name)
xml_file = [
name for name in theme_zip.namelist()
if os.path.splitext(name)[1].lower() == '.xml'
]
if len(xml_file) != 1:
self.log_error('Theme contains "%s" XML files' % len(xml_file))
raise ValidationError
xml_tree = ElementTree(
element=XML(theme_zip.read(xml_file[0]))).getroot()
theme_version = xml_tree.get('version', default=None)
if not theme_version or float(theme_version) < 2.0:
self.log_error('Theme version is less than 2.0')
raise ValidationError
theme_name = xml_tree.find('name').text.strip()
theme_folder = os.path.join(directory, theme_name)
theme_exists = os.path.exists(theme_folder)
if theme_exists and not self.over_write_message_box(theme_name):
abort_import = True
return
else:
abort_import = False
for name in theme_zip.namelist():
out_name = name.replace('/', os.path.sep)
split_name = out_name.split(os.path.sep)
if split_name[-1] == '' or len(split_name) == 1:
# is directory or preview file
continue
full_name = os.path.join(directory, out_name)
check_directory_exists(os.path.dirname(full_name))
if os.path.splitext(name)[1].lower() == '.xml':
file_xml = str(theme_zip.read(name), 'utf-8')
out_file = open(full_name, 'w', encoding='utf-8')
out_file.write(file_xml)
else:
out_file = open(full_name, 'wb')
out_file.write(theme_zip.read(name))
out_file.close()
except (IOError, zipfile.BadZipfile):
self.log_exception('Importing theme from zip failed %s' %
file_name)
raise ValidationError
except ValidationError:
critical_error_message_box(
translate('OpenLP.ThemeManager', 'Validation Error'),
translate('OpenLP.ThemeManager', 'File is not a valid theme.'))
finally:
# Close the files, to be able to continue creating the theme.
if theme_zip:
theme_zip.close()
if out_file:
out_file.close()
if not abort_import:
# As all files are closed, we can create the Theme.
if file_xml:
theme = self._create_theme_from_xml(file_xml, self.path)
self.generate_and_save_image(theme_name, theme)
# Only show the error message, when IOError was not raised (in
# this case the error message has already been shown).
elif theme_zip is not None:
critical_error_message_box(
translate('OpenLP.ThemeManager', 'Validation Error'),
translate('OpenLP.ThemeManager',
'File is not a valid theme.'))
self.log_error('Theme file does not contain XML data %s' %
file_name)
def check_if_theme_exists(self, theme_name):
"""
Check if theme already exists and displays error message
:param theme_name: Name of the Theme to test
:return: True or False if theme exists
"""
theme_dir = os.path.join(self.path, theme_name)
if os.path.exists(theme_dir):
critical_error_message_box(
translate('OpenLP.ThemeManager', 'Validation Error'),
translate('OpenLP.ThemeManager',
'A theme with this name already exists.'))
return False
return True
def save_theme(self, theme, image_from, image_to):
"""
Called by theme maintenance Dialog to save the theme and to trigger the reload of the theme list
:param theme: The theme data object.
:param image_from: Where the theme image is currently located.
:param image_to: Where the Theme Image is to be saved to
"""
self._write_theme(theme, image_from, image_to)
if theme.background_type == BackgroundType.to_string(
BackgroundType.Image):
self.image_manager.update_image_border(
theme.background_filename, ImageSource.Theme,
QtGui.QColor(theme.background_border_color))
self.image_manager.process_updates()
def _write_theme(self, theme, image_from, image_to):
"""
Writes the theme to the disk and handles the background image if necessary
:param theme: The theme data object.
:param image_from: Where the theme image is currently located.
:param image_to: Where the Theme Image is to be saved to
"""
name = theme.theme_name
theme_pretty_xml = theme.extract_formatted_xml()
theme_dir = os.path.join(self.path, name)
check_directory_exists(theme_dir)
theme_file = os.path.join(theme_dir, name + '.xml')
if self.old_background_image and image_to != self.old_background_image:
delete_file(self.old_background_image)
out_file = None
try:
out_file = open(theme_file, 'w', encoding='utf-8')
out_file.write(theme_pretty_xml.decode('utf-8'))
except IOError:
self.log_exception('Saving theme to file failed')
finally:
if out_file:
out_file.close()
if image_from and os.path.abspath(image_from) != os.path.abspath(
image_to):
try:
# Windows is always unicode, so no need to encode filenames
if is_win():
shutil.copyfile(image_from, image_to)
else:
encoding = get_filesystem_encoding()
shutil.copyfile(image_from.encode(encoding),
image_to.encode(encoding))
except IOError as xxx_todo_changeme:
shutil.Error = xxx_todo_changeme
self.log_exception('Failed to save theme image')
self.generate_and_save_image(name, theme)
def generate_and_save_image(self, name, theme):
"""
Generate and save a preview image
:param name: The name of the theme.
:param theme: The theme data object.
"""
frame = self.generate_image(theme)
sample_path_name = os.path.join(self.path, name + '.png')
if os.path.exists(sample_path_name):
os.unlink(sample_path_name)
frame.save(sample_path_name, 'png')
thumb = os.path.join(self.thumb_path, '%s.png' % name)
create_thumb(sample_path_name, thumb, False)
def update_preview_images(self):
"""
Called to update the themes' preview images.
"""
self.main_window.display_progress_bar(len(self.theme_list))
for theme in self.theme_list:
self.main_window.increment_progress_bar()
self.generate_and_save_image(theme, self.get_theme_data(theme))
self.main_window.finished_progress_bar()
self.load_themes()
def generate_image(self, theme_data, force_page=False):
"""
Call the renderer to build a Sample Image
:param theme_data: The theme to generated a preview for.
:param force_page: Flag to tell message lines per page need to be generated.
"""
return self.renderer.generate_preview(theme_data, force_page)
def get_preview_image(self, theme):
"""
Return an image representing the look of the theme
:param theme: The theme to return the image for.
"""
return os.path.join(self.path, theme + '.png')
def _create_theme_from_xml(self, theme_xml, image_path):
"""
Return a theme object using information parsed from XML
:param theme_xml: The Theme data object.
:param image_path: Where the theme image is stored
:return: Theme data.
"""
theme = ThemeXML()
theme.parse(theme_xml)
theme.extend_image_filename(image_path)
return theme
def _validate_theme_action(self,
select_text,
confirm_title,
confirm_text,
test_plugin=True,
confirm=True):
"""
Check to see if theme has been selected and the destructive action is allowed.
:param select_text: Text for message box if no item selected.
:param confirm_title: Confirm message title to be displayed.
:param confirm_text: Confirm message text to be displayed.
:param test_plugin: Do we check the plugins for theme usage.
:param confirm: Do we display a confirm box before run checks.
:return: True or False depending on the validity.
"""
self.global_theme = Settings().value(self.settings_section +
'/global theme')
if check_item_selected(self.theme_list_widget, select_text):
item = self.theme_list_widget.currentItem()
theme = item.text()
# confirm deletion
if confirm:
answer = QtWidgets.QMessageBox.question(
self, confirm_title, confirm_text % theme,
QtWidgets.QMessageBox.StandardButtons(
QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No),
QtWidgets.QMessageBox.No)
if answer == QtWidgets.QMessageBox.No:
return False
# should be the same unless default
if theme != item.data(QtCore.Qt.UserRole):
critical_error_message_box(message=translate(
'OpenLP.ThemeManager',
'You are unable to delete the default theme.'))
return False
# check for use in the system else where.
if test_plugin:
plugin_usage = ""
for plugin in self.plugin_manager.plugins:
used_count = plugin.uses_theme(theme)
if used_count:
plugin_usage = "%s%s" % (
plugin_usage, (translate('OpenLP.ThemeManager',
'%s time(s) by %s') %
(used_count, plugin.name)))
plugin_usage = "%s\n" % plugin_usage
if plugin_usage:
critical_error_message_box(
translate('OpenLP.ThemeManager',
'Unable to delete theme'),
translate('OpenLP.ThemeManager',
'Theme is currently used \n\n%s') %
plugin_usage)
return False
return True
return False
class ThemeManager(OpenLPMixin, RegistryMixin, QtWidgets.QWidget, Ui_ThemeManager, RegistryProperties):
"""
Manages the orders of Theme.
"""
def __init__(self, parent=None):
"""
Constructor
"""
super(ThemeManager, self).__init__(parent)
self.settings_section = 'themes'
# Variables
self.theme_list = []
self.old_background_image = None
def bootstrap_initialise(self):
"""
process the bootstrap initialise setup request
"""
self.setup_ui(self)
self.global_theme = Settings().value(self.settings_section + '/global theme')
self.build_theme_path()
self.load_first_time_themes()
def bootstrap_post_set_up(self):
"""
process the bootstrap post setup request
"""
self.theme_form = ThemeForm(self)
self.theme_form.path = self.path
self.file_rename_form = FileRenameForm()
Registry().register_function('theme_update_global', self.change_global_from_tab)
self.load_themes()
def build_theme_path(self):
"""
Set up the theme path variables
"""
self.path = AppLocation.get_section_data_path(self.settings_section)
check_directory_exists(self.path)
self.thumb_path = os.path.join(self.path, 'thumbnails')
check_directory_exists(self.thumb_path)
def check_list_state(self, item, field=None):
"""
If Default theme selected remove delete button.
Note for some reason a dummy field is required. Nothing is passed!
:param field:
:param item: Service Item to process
"""
if item is None:
return
real_theme_name = item.data(QtCore.Qt.UserRole)
theme_name = item.text()
# If default theme restrict actions
if real_theme_name == theme_name:
self.delete_toolbar_action.setVisible(True)
else:
self.delete_toolbar_action.setVisible(False)
def context_menu(self, point):
"""
Build the Right Click Context menu and set state depending on the type of theme.
:param point: The position of the mouse so the correct item can be found.
"""
item = self.theme_list_widget.itemAt(point)
if item is None:
return
real_theme_name = item.data(QtCore.Qt.UserRole)
theme_name = str(item.text())
visible = real_theme_name == theme_name
self.delete_action.setVisible(visible)
self.rename_action.setVisible(visible)
self.global_action.setVisible(visible)
self.menu.exec(self.theme_list_widget.mapToGlobal(point))
def change_global_from_tab(self):
"""
Change the global theme when it is changed through the Themes settings tab
"""
self.global_theme = Settings().value(self.settings_section + '/global theme')
self.log_debug('change_global_from_tab {text}'.format(text=self.global_theme))
for count in range(0, self.theme_list_widget.count()):
# reset the old name
item = self.theme_list_widget.item(count)
old_name = item.text()
new_name = item.data(QtCore.Qt.UserRole)
if old_name != new_name:
self.theme_list_widget.item(count).setText(new_name)
# Set the new name
if self.global_theme == new_name:
name = translate('OpenLP.ThemeManager', '{text} (default)').format(text=new_name)
self.theme_list_widget.item(count).setText(name)
self.delete_toolbar_action.setVisible(item not in self.theme_list_widget.selectedItems())
def change_global_from_screen(self, index=-1):
"""
Change the global theme when a theme is double clicked upon in the Theme Manager list.
:param index:
"""
selected_row = self.theme_list_widget.currentRow()
for count in range(0, self.theme_list_widget.count()):
item = self.theme_list_widget.item(count)
old_name = item.text()
# reset the old name
if old_name != item.data(QtCore.Qt.UserRole):
self.theme_list_widget.item(count).setText(item.data(QtCore.Qt.UserRole))
# Set the new name
if count == selected_row:
self.global_theme = self.theme_list_widget.item(count).text()
name = translate('OpenLP.ThemeManager', '{text} (default)').format(text=self.global_theme)
self.theme_list_widget.item(count).setText(name)
Settings().setValue(self.settings_section + '/global theme', self.global_theme)
Registry().execute('theme_update_global')
self._push_themes()
def on_add_theme(self, field=None):
"""
Loads a new theme with the default settings and then launches the theme editing form for the user to make
their customisations.
:param field:
"""
theme = ThemeXML()
theme.set_default_header_footer()
self.theme_form.theme = theme
self.theme_form.exec()
self.load_themes()
def on_rename_theme(self, field=None):
"""
Renames an existing theme to a new name
:param field:
"""
# TODO: Check for delayed format() conversions
if self._validate_theme_action(translate('OpenLP.ThemeManager', 'You must select a theme to rename.'),
translate('OpenLP.ThemeManager', 'Rename Confirmation'),
translate('OpenLP.ThemeManager', 'Rename %s theme?'), False, False):
item = self.theme_list_widget.currentItem()
old_theme_name = item.data(QtCore.Qt.UserRole)
self.file_rename_form.file_name_edit.setText(old_theme_name)
if self.file_rename_form.exec():
new_theme_name = self.file_rename_form.file_name_edit.text()
if old_theme_name == new_theme_name:
return
if self.check_if_theme_exists(new_theme_name):
old_theme_data = self.get_theme_data(old_theme_name)
self.clone_theme_data(old_theme_data, new_theme_name)
self.delete_theme(old_theme_name)
for plugin in self.plugin_manager.plugins:
if plugin.uses_theme(old_theme_name):
plugin.rename_theme(old_theme_name, new_theme_name)
self.renderer.update_theme(new_theme_name, old_theme_name)
self.load_themes()
def on_copy_theme(self, field=None):
"""
Copies an existing theme to a new name
:param field:
"""
item = self.theme_list_widget.currentItem()
old_theme_name = item.data(QtCore.Qt.UserRole)
self.file_rename_form.file_name_edit.setText(translate('OpenLP.ThemeManager',
'Copy of {name}',
'Copy of <theme name>').format(name=old_theme_name))
if self.file_rename_form.exec(True):
new_theme_name = self.file_rename_form.file_name_edit.text()
if self.check_if_theme_exists(new_theme_name):
theme_data = self.get_theme_data(old_theme_name)
self.clone_theme_data(theme_data, new_theme_name)
def clone_theme_data(self, theme_data, new_theme_name):
"""
Takes a theme and makes a new copy of it as well as saving it.
:param theme_data: The theme to be used
:param new_theme_name: The new theme name to save the data to
"""
save_to = None
save_from = None
if theme_data.background_type == 'image' or theme_data.background_type == 'video':
save_to = os.path.join(self.path, new_theme_name, os.path.split(str(theme_data.background_filename))[1])
save_from = theme_data.background_filename
theme_data.theme_name = new_theme_name
theme_data.extend_image_filename(self.path)
self.save_theme(theme_data, save_from, save_to)
self.load_themes()
def on_edit_theme(self, field=None):
"""
Loads the settings for the theme that is to be edited and launches the
theme editing form so the user can make their changes.
:param field:
"""
if check_item_selected(self.theme_list_widget,
translate('OpenLP.ThemeManager', 'You must select a theme to edit.')):
item = self.theme_list_widget.currentItem()
theme = self.get_theme_data(item.data(QtCore.Qt.UserRole))
if theme.background_type == 'image' or theme.background_type == 'video':
self.old_background_image = theme.background_filename
self.theme_form.theme = theme
self.theme_form.exec(True)
self.old_background_image = None
self.renderer.update_theme(theme.theme_name)
self.load_themes()
def on_delete_theme(self, field=None):
"""
Delete a theme triggered by the UI.
:param field:
"""
# TODO: Verify delayed format() conversions
if self._validate_theme_action(translate('OpenLP.ThemeManager', 'You must select a theme to delete.'),
translate('OpenLP.ThemeManager', 'Delete Confirmation'),
translate('OpenLP.ThemeManager', 'Delete %s theme?')):
item = self.theme_list_widget.currentItem()
theme = item.text()
row = self.theme_list_widget.row(item)
self.theme_list_widget.takeItem(row)
self.delete_theme(theme)
self.renderer.update_theme(theme, only_delete=True)
# As we do not reload the themes, push out the change. Reload the
# list as the internal lists and events need to be triggered.
self._push_themes()
def delete_theme(self, theme):
"""
Delete a theme.
:param theme: The theme to delete.
"""
self.theme_list.remove(theme)
thumb = '{name}.png'.format(name=theme)
delete_file(os.path.join(self.path, thumb))
delete_file(os.path.join(self.thumb_path, thumb))
try:
# Windows is always unicode, so no need to encode filenames
if is_win():
shutil.rmtree(os.path.join(self.path, theme))
else:
encoding = get_filesystem_encoding()
shutil.rmtree(os.path.join(self.path, theme).encode(encoding))
except OSError as os_error:
shutil.Error = os_error
self.log_exception('Error deleting theme {name}'.format(name=theme))
def on_export_theme(self, field=None):
"""
Export the theme in a zip file
:param field:
"""
item = self.theme_list_widget.currentItem()
if item is None:
critical_error_message_box(message=translate('OpenLP.ThemeManager', 'You have not selected a theme.'))
return
theme = item.data(QtCore.Qt.UserRole)
path = QtWidgets.QFileDialog.getExistingDirectory(self,
translate('OpenLP.ThemeManager',
'Save Theme - ({name})').format(name=theme),
Settings().value(self.settings_section +
'/last directory export'))
self.application.set_busy_cursor()
if path:
Settings().setValue(self.settings_section + '/last directory export', path)
if self._export_theme(path, theme):
QtWidgets.QMessageBox.information(self,
translate('OpenLP.ThemeManager', 'Theme Exported'),
translate('OpenLP.ThemeManager',
'Your theme has been successfully exported.'))
self.application.set_normal_cursor()
def _export_theme(self, path, theme):
"""
Create the zipfile with the theme contents.
:param path: Location where the zip file will be placed
:param theme: The name of the theme to be exported
"""
theme_path = os.path.join(path, theme + '.otz')
theme_zip = None
try:
theme_zip = zipfile.ZipFile(theme_path, 'w')
source = os.path.join(self.path, theme)
for files in os.walk(source):
for name in files[2]:
theme_zip.write(os.path.join(source, name), os.path.join(theme, name))
theme_zip.close()
return True
except OSError as ose:
self.log_exception('Export Theme Failed')
critical_error_message_box(translate('OpenLP.ThemeManager', 'Theme Export Failed'),
translate('OpenLP.ThemeManager', 'The theme export failed because this error '
'occurred: {err}').format(err=ose.strerror))
if theme_zip:
theme_zip.close()
shutil.rmtree(theme_path, True)
return False
def on_import_theme(self, field=None):
"""
Opens a file dialog to select the theme file(s) to import before attempting to extract OpenLP themes from
those files. This process will only load version 2 themes.
:param field:
"""
files = FileDialog.getOpenFileNames(self,
translate('OpenLP.ThemeManager', 'Select Theme Import File'),
Settings().value(self.settings_section + '/last directory import'),
translate('OpenLP.ThemeManager', 'OpenLP Themes (*.otz)'))
self.log_info('New Themes {name}'.format(name=str(files)))
if not files:
return
self.application.set_busy_cursor()
for file_name in files:
Settings().setValue(self.settings_section + '/last directory import', str(file_name))
self.unzip_theme(file_name, self.path)
self.load_themes()
self.application.set_normal_cursor()
def load_first_time_themes(self):
"""
Imports any themes on start up and makes sure there is at least one theme
"""
self.application.set_busy_cursor()
files = AppLocation.get_files(self.settings_section, '.otz')
for theme_file in files:
theme_file = os.path.join(self.path, theme_file)
self.unzip_theme(theme_file, self.path)
delete_file(theme_file)
files = AppLocation.get_files(self.settings_section, '.png')
# No themes have been found so create one
if not files:
theme = ThemeXML()
theme.theme_name = UiStrings().Default
self._write_theme(theme, None, None)
Settings().setValue(self.settings_section + '/global theme', theme.theme_name)
self.application.set_normal_cursor()
def load_themes(self):
"""
Loads the theme lists and triggers updates across the whole system using direct calls or core functions and
events for the plugins.
The plugins will call back in to get the real list if they want it.
"""
self.theme_list = []
self.theme_list_widget.clear()
files = AppLocation.get_files(self.settings_section, '.png')
# Sort the themes by its name considering language specific
files.sort(key=lambda file_name: get_locale_key(str(file_name)))
# now process the file list of png files
for name in files:
# check to see file is in theme root directory
theme = os.path.join(self.path, name)
if os.path.exists(theme):
text_name = os.path.splitext(name)[0]
if text_name == self.global_theme:
name = translate('OpenLP.ThemeManager', '{name} (default)').format(name=text_name)
else:
name = text_name
thumb = os.path.join(self.thumb_path, '{name}.png'.format(name=text_name))
item_name = QtWidgets.QListWidgetItem(name)
if validate_thumb(theme, thumb):
icon = build_icon(thumb)
else:
icon = create_thumb(theme, thumb)
item_name.setIcon(icon)
item_name.setData(QtCore.Qt.UserRole, text_name)
self.theme_list_widget.addItem(item_name)
self.theme_list.append(text_name)
self._push_themes()
def _push_themes(self):
"""
Notify listeners that the theme list has been updated
"""
Registry().execute('theme_update_list', self.get_themes())
def get_themes(self):
"""
Return the list of loaded themes
"""
return self.theme_list
def get_theme_data(self, theme_name):
"""
Returns a theme object from an XML file
:param theme_name: Name of the theme to load from file
:return: The theme object.
"""
self.log_debug('get theme data for theme {name}'.format(name=theme_name))
xml_file = os.path.join(self.path, str(theme_name), str(theme_name) + '.xml')
xml = get_text_file_string(xml_file)
if not xml:
self.log_debug('No theme data - using default theme')
return ThemeXML()
else:
return self._create_theme_from_xml(xml, self.path)
def over_write_message_box(self, theme_name):
"""
Display a warning box to the user that a theme already exists
:param theme_name: Name of the theme.
:return: Confirm if the theme is to be overwritten.
"""
ret = QtWidgets.QMessageBox.question(self, translate('OpenLP.ThemeManager', 'Theme Already Exists'),
translate('OpenLP.ThemeManager',
'Theme {name} already exists. '
'Do you want to replace it?').format(name=theme_name),
QtWidgets.QMessageBox.StandardButtons(QtWidgets.QMessageBox.Yes |
QtWidgets.QMessageBox.No),
QtWidgets.QMessageBox.No)
return ret == QtWidgets.QMessageBox.Yes
def unzip_theme(self, file_name, directory):
"""
Unzip the theme, remove the preview file if stored. Generate a new preview file. Check the XML theme version
and upgrade if necessary.
:param file_name:
:param directory:
"""
self.log_debug('Unzipping theme {name}'.format(name=file_name))
theme_zip = None
out_file = None
file_xml = None
abort_import = True
try:
theme_zip = zipfile.ZipFile(file_name)
xml_file = [name for name in theme_zip.namelist() if os.path.splitext(name)[1].lower() == '.xml']
if len(xml_file) != 1:
self.log_error('Theme contains "{val:d}" XML files'.format(val=len(xml_file)))
raise ValidationError
xml_tree = ElementTree(element=XML(theme_zip.read(xml_file[0]))).getroot()
theme_version = xml_tree.get('version', default=None)
if not theme_version or float(theme_version) < 2.0:
self.log_error('Theme version is less than 2.0')
raise ValidationError
theme_name = xml_tree.find('name').text.strip()
theme_folder = os.path.join(directory, theme_name)
theme_exists = os.path.exists(theme_folder)
if theme_exists and not self.over_write_message_box(theme_name):
abort_import = True
return
else:
abort_import = False
for name in theme_zip.namelist():
out_name = name.replace('/', os.path.sep)
split_name = out_name.split(os.path.sep)
if split_name[-1] == '' or len(split_name) == 1:
# is directory or preview file
continue
full_name = os.path.join(directory, out_name)
check_directory_exists(os.path.dirname(full_name))
if os.path.splitext(name)[1].lower() == '.xml':
file_xml = str(theme_zip.read(name), 'utf-8')
out_file = open(full_name, 'w', encoding='utf-8')
out_file.write(file_xml)
else:
out_file = open(full_name, 'wb')
out_file.write(theme_zip.read(name))
out_file.close()
except (IOError, zipfile.BadZipfile):
self.log_exception('Importing theme from zip failed {name}'.format(name=file_name))
raise ValidationError
except ValidationError:
critical_error_message_box(translate('OpenLP.ThemeManager', 'Validation Error'),
translate('OpenLP.ThemeManager', 'File is not a valid theme.'))
finally:
# Close the files, to be able to continue creating the theme.
if theme_zip:
theme_zip.close()
if out_file:
out_file.close()
if not abort_import:
# As all files are closed, we can create the Theme.
if file_xml:
theme = self._create_theme_from_xml(file_xml, self.path)
self.generate_and_save_image(theme_name, theme)
# Only show the error message, when IOError was not raised (in
# this case the error message has already been shown).
elif theme_zip is not None:
critical_error_message_box(
translate('OpenLP.ThemeManager', 'Validation Error'),
translate('OpenLP.ThemeManager', 'File is not a valid theme.'))
self.log_error('Theme file does not contain XML data {name}'.format(name=file_name))
def check_if_theme_exists(self, theme_name):
"""
Check if theme already exists and displays error message
:param theme_name: Name of the Theme to test
:return: True or False if theme exists
"""
theme_dir = os.path.join(self.path, theme_name)
if os.path.exists(theme_dir):
critical_error_message_box(
translate('OpenLP.ThemeManager', 'Validation Error'),
translate('OpenLP.ThemeManager', 'A theme with this name already exists.'))
return False
return True
def save_theme(self, theme, image_from, image_to):
"""
Called by theme maintenance Dialog to save the theme and to trigger the reload of the theme list
:param theme: The theme data object.
:param image_from: Where the theme image is currently located.
:param image_to: Where the Theme Image is to be saved to
"""
self._write_theme(theme, image_from, image_to)
if theme.background_type == BackgroundType.to_string(BackgroundType.Image):
self.image_manager.update_image_border(theme.background_filename,
ImageSource.Theme,
QtGui.QColor(theme.background_border_color))
self.image_manager.process_updates()
def _write_theme(self, theme, image_from, image_to):
"""
Writes the theme to the disk and handles the background image if necessary
:param theme: The theme data object.
:param image_from: Where the theme image is currently located.
:param image_to: Where the Theme Image is to be saved to
"""
name = theme.theme_name
theme_pretty_xml = theme.extract_formatted_xml()
theme_dir = os.path.join(self.path, name)
check_directory_exists(theme_dir)
theme_file = os.path.join(theme_dir, name + '.xml')
if self.old_background_image and image_to != self.old_background_image:
delete_file(self.old_background_image)
out_file = None
try:
out_file = open(theme_file, 'w', encoding='utf-8')
out_file.write(theme_pretty_xml.decode('utf-8'))
except IOError:
self.log_exception('Saving theme to file failed')
finally:
if out_file:
out_file.close()
if image_from and os.path.abspath(image_from) != os.path.abspath(image_to):
try:
# Windows is always unicode, so no need to encode filenames
if is_win():
shutil.copyfile(image_from, image_to)
else:
encoding = get_filesystem_encoding()
shutil.copyfile(image_from.encode(encoding), image_to.encode(encoding))
except IOError as xxx_todo_changeme:
shutil.Error = xxx_todo_changeme
self.log_exception('Failed to save theme image')
self.generate_and_save_image(name, theme)
def generate_and_save_image(self, name, theme):
"""
Generate and save a preview image
:param name: The name of the theme.
:param theme: The theme data object.
"""
frame = self.generate_image(theme)
sample_path_name = os.path.join(self.path, name + '.png')
if os.path.exists(sample_path_name):
os.unlink(sample_path_name)
frame.save(sample_path_name, 'png')
thumb = os.path.join(self.thumb_path, '{name}.png'.format(name=name))
create_thumb(sample_path_name, thumb, False)
def update_preview_images(self):
"""
Called to update the themes' preview images.
"""
self.main_window.display_progress_bar(len(self.theme_list))
for theme in self.theme_list:
self.main_window.increment_progress_bar()
self.generate_and_save_image(theme, self.get_theme_data(theme))
self.main_window.finished_progress_bar()
self.load_themes()
def generate_image(self, theme_data, force_page=False):
"""
Call the renderer to build a Sample Image
:param theme_data: The theme to generated a preview for.
:param force_page: Flag to tell message lines per page need to be generated.
"""
return self.renderer.generate_preview(theme_data, force_page)
def get_preview_image(self, theme):
"""
Return an image representing the look of the theme
:param theme: The theme to return the image for.
"""
return os.path.join(self.path, theme + '.png')
def _create_theme_from_xml(self, theme_xml, image_path):
"""
Return a theme object using information parsed from XML
:param theme_xml: The Theme data object.
:param image_path: Where the theme image is stored
:return: Theme data.
"""
theme = ThemeXML()
theme.parse(theme_xml)
theme.extend_image_filename(image_path)
return theme
def _validate_theme_action(self, select_text, confirm_title, confirm_text, test_plugin=True, confirm=True):
"""
Check to see if theme has been selected and the destructive action is allowed.
:param select_text: Text for message box if no item selected.
:param confirm_title: Confirm message title to be displayed.
:param confirm_text: Confirm message text to be displayed.
:param test_plugin: Do we check the plugins for theme usage.
:param confirm: Do we display a confirm box before run checks.
:return: True or False depending on the validity.
"""
self.global_theme = Settings().value(self.settings_section + '/global theme')
if check_item_selected(self.theme_list_widget, select_text):
item = self.theme_list_widget.currentItem()
theme = item.text()
# confirm deletion
if confirm:
answer = QtWidgets.QMessageBox.question(
self, confirm_title, confirm_text % theme,
QtWidgets.QMessageBox.StandardButtons(QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No),
QtWidgets.QMessageBox.No)
if answer == QtWidgets.QMessageBox.No:
return False
# should be the same unless default
if theme != item.data(QtCore.Qt.UserRole):
critical_error_message_box(
message=translate('OpenLP.ThemeManager', 'You are unable to delete the default theme.'))
return False
# check for use in the system else where.
if test_plugin:
plugin_usage = ""
for plugin in self.plugin_manager.plugins:
used_count = plugin.uses_theme(theme)
if used_count:
plugin_usage = "{plug}{text}".format(plug=plugin_usage,
text=(translate('OpenLP.ThemeManager',
'{count} time(s) by {plugin}'
).format(name=used_count,
plugin=plugin.name)))
plugin_usage = "{text}\n".format(text=plugin_usage)
if plugin_usage:
critical_error_message_box(translate('OpenLP.ThemeManager', 'Unable to delete theme'),
translate('OpenLP.ThemeManager',
'Theme is currently used \n\n{text}'
).format(text=plugin_usage))
return False
return True
return False
def setUp(self):
with patch('openlp.core.ui.ThemeForm._setup'):
self.instance = ThemeForm(None)
class ThemeManager(QtWidgets.QWidget, RegistryBase, Ui_ThemeManager, LogMixin, RegistryProperties):
"""
Manages the orders of Theme.
"""
def __init__(self, parent=None):
"""
Constructor
"""
super(ThemeManager, self).__init__(parent)
self.settings_section = 'themes'
# Variables
self.theme_list = []
self.old_background_image_path = None
def bootstrap_initialise(self):
"""
process the bootstrap initialise setup request
"""
self.setup_ui(self)
self.global_theme = Settings().value(self.settings_section + '/global theme')
self.build_theme_path()
self.load_first_time_themes()
self.upgrade_themes()
def bootstrap_post_set_up(self):
"""
process the bootstrap post setup request
"""
self.theme_form = ThemeForm(self)
self.theme_form.path = self.theme_path
self.file_rename_form = FileRenameForm()
Registry().register_function('theme_update_global', self.change_global_from_tab)
self.load_themes()
def upgrade_themes(self):
"""
Upgrade the xml files to json.
:rtype: None
"""
xml_file_paths = AppLocation.get_section_data_path('themes').glob('*/*.xml')
for xml_file_path in xml_file_paths:
theme_data = get_text_file_string(xml_file_path)
theme = self._create_theme_from_xml(theme_data, self.theme_path)
self._write_theme(theme)
xml_file_path.unlink()
def build_theme_path(self):
"""
Set up the theme path variables
:rtype: None
"""
self.theme_path = AppLocation.get_section_data_path(self.settings_section)
self.thumb_path = self.theme_path / 'thumbnails'
create_paths(self.theme_path, self.thumb_path)
def check_list_state(self, item, field=None):
"""
If Default theme selected remove delete button.
Note for some reason a dummy field is required. Nothing is passed!
:param field:
:param item: Service Item to process
"""
if item is None:
return
real_theme_name = item.data(QtCore.Qt.UserRole)
theme_name = item.text()
# If default theme restrict actions
if real_theme_name == theme_name:
self.delete_toolbar_action.setVisible(True)
else:
self.delete_toolbar_action.setVisible(False)
def context_menu(self, point):
"""
Build the Right Click Context menu and set state depending on the type of theme.
:param point: The position of the mouse so the correct item can be found.
"""
item = self.theme_list_widget.itemAt(point)
if item is None:
return
real_theme_name = item.data(QtCore.Qt.UserRole)
theme_name = str(item.text())
visible = real_theme_name == theme_name
self.delete_action.setVisible(visible)
self.rename_action.setVisible(visible)
self.global_action.setVisible(visible)
self.menu.exec(self.theme_list_widget.mapToGlobal(point))
def change_global_from_tab(self):
"""
Change the global theme when it is changed through the Themes settings tab
"""
self.global_theme = Settings().value(self.settings_section + '/global theme')
self.log_debug('change_global_from_tab {text}'.format(text=self.global_theme))
for count in range(0, self.theme_list_widget.count()):
# reset the old name
item = self.theme_list_widget.item(count)
old_name = item.text()
new_name = item.data(QtCore.Qt.UserRole)
if old_name != new_name:
self.theme_list_widget.item(count).setText(new_name)
# Set the new name
if self.global_theme == new_name:
name = translate('OpenLP.ThemeManager', '{text} (default)').format(text=new_name)
self.theme_list_widget.item(count).setText(name)
self.delete_toolbar_action.setVisible(item not in self.theme_list_widget.selectedItems())
def change_global_from_screen(self, index=-1):
"""
Change the global theme when a theme is double clicked upon in the Theme Manager list.
:param index:
"""
selected_row = self.theme_list_widget.currentRow()
for count in range(0, self.theme_list_widget.count()):
item = self.theme_list_widget.item(count)
old_name = item.text()
# reset the old name
if old_name != item.data(QtCore.Qt.UserRole):
self.theme_list_widget.item(count).setText(item.data(QtCore.Qt.UserRole))
# Set the new name
if count == selected_row:
self.global_theme = self.theme_list_widget.item(count).text()
name = translate('OpenLP.ThemeManager', '{text} (default)').format(text=self.global_theme)
self.theme_list_widget.item(count).setText(name)
Settings().setValue(self.settings_section + '/global theme', self.global_theme)
Registry().execute('theme_update_global')
self._push_themes()
def on_add_theme(self, field=None):
"""
Loads a new theme with the default settings and then launches the theme editing form for the user to make
their customisations.
:param field:
"""
theme = Theme()
theme.set_default_header_footer()
self.theme_form.theme = theme
self.theme_form.exec()
self.load_themes()
def on_rename_theme(self, field=None):
"""
Renames an existing theme to a new name
:param field:
"""
if self._validate_theme_action(translate('OpenLP.ThemeManager', 'You must select a theme to rename.'),
translate('OpenLP.ThemeManager', 'Rename Confirmation'),
translate('OpenLP.ThemeManager', 'Rename {theme_name} theme?'), False, False):
item = self.theme_list_widget.currentItem()
old_theme_name = item.data(QtCore.Qt.UserRole)
self.file_rename_form.file_name_edit.setText(old_theme_name)
if self.file_rename_form.exec():
new_theme_name = self.file_rename_form.file_name_edit.text()
if old_theme_name == new_theme_name:
return
if self.check_if_theme_exists(new_theme_name):
old_theme_data = self.get_theme_data(old_theme_name)
self.clone_theme_data(old_theme_data, new_theme_name)
self.delete_theme(old_theme_name)
for plugin in self.plugin_manager.plugins:
if plugin.uses_theme(old_theme_name):
plugin.rename_theme(old_theme_name, new_theme_name)
self.renderer.update_theme(new_theme_name, old_theme_name)
self.load_themes()
def on_copy_theme(self, field=None):
"""
Copies an existing theme to a new name
:param field:
"""
item = self.theme_list_widget.currentItem()
old_theme_name = item.data(QtCore.Qt.UserRole)
self.file_rename_form.file_name_edit.setText(translate('OpenLP.ThemeManager',
'Copy of {name}',
'Copy of <theme name>').format(name=old_theme_name))
if self.file_rename_form.exec(True):
new_theme_name = self.file_rename_form.file_name_edit.text()
if self.check_if_theme_exists(new_theme_name):
theme_data = self.get_theme_data(old_theme_name)
self.clone_theme_data(theme_data, new_theme_name)
def clone_theme_data(self, theme_data, new_theme_name):
"""
Takes a theme and makes a new copy of it as well as saving it.
:param Theme theme_data: The theme to be used
:param str new_theme_name: The new theme name of the theme
:rtype: None
"""
destination_path = None
source_path = None
if theme_data.background_type == 'image' or theme_data.background_type == 'video':
destination_path = self.theme_path / new_theme_name / theme_data.background_filename.name
source_path = theme_data.background_filename
theme_data.theme_name = new_theme_name
theme_data.extend_image_filename(self.theme_path)
self.save_theme(theme_data, source_path, destination_path)
self.load_themes()
def on_edit_theme(self, field=None):
"""
Loads the settings for the theme that is to be edited and launches the
theme editing form so the user can make their changes.
:param field:
"""
if check_item_selected(self.theme_list_widget,
translate('OpenLP.ThemeManager', 'You must select a theme to edit.')):
item = self.theme_list_widget.currentItem()
theme = self.get_theme_data(item.data(QtCore.Qt.UserRole))
if theme.background_type == 'image' or theme.background_type == 'video':
self.old_background_image_path = theme.background_filename
self.theme_form.theme = theme
self.theme_form.exec(True)
self.old_background_image_path = None
self.renderer.update_theme(theme.theme_name)
self.load_themes()
def on_delete_theme(self, field=None):
"""
Delete a theme triggered by the UI.
:param field:
"""
if self._validate_theme_action(translate('OpenLP.ThemeManager', 'You must select a theme to delete.'),
translate('OpenLP.ThemeManager', 'Delete Confirmation'),
translate('OpenLP.ThemeManager', 'Delete {theme_name} theme?')):
item = self.theme_list_widget.currentItem()
theme = item.text()
row = self.theme_list_widget.row(item)
self.theme_list_widget.takeItem(row)
self.delete_theme(theme)
self.renderer.update_theme(theme, only_delete=True)
# As we do not reload the themes, push out the change. Reload the
# list as the internal lists and events need to be triggered.
self._push_themes()
def delete_theme(self, theme):
"""
Delete a theme.
:param theme: The theme to delete.
"""
self.theme_list.remove(theme)
thumb = '{name}.png'.format(name=theme)
delete_file(self.theme_path / thumb)
delete_file(self.thumb_path / thumb)
try:
(self.theme_path / theme).rmtree()
except OSError:
self.log_exception('Error deleting theme {name}'.format(name=theme))
def on_export_theme(self, checked=None):
"""
Export the theme to a zip file
:param bool checked: Sent by the QAction.triggered signal. It's not used in this method.
:rtype: None
"""
item = self.theme_list_widget.currentItem()
if item is None:
critical_error_message_box(message=translate('OpenLP.ThemeManager', 'You have not selected a theme.'))
return
theme_name = item.data(QtCore.Qt.UserRole)
export_path, filter_used = \
FileDialog.getSaveFileName(self.main_window,
translate('OpenLP.ThemeManager',
'Save Theme - ({name})').format(name=theme_name),
Settings().value(self.settings_section + '/last directory export'),
translate('OpenLP.ThemeManager', 'OpenLP Themes (*.otz)'),
translate('OpenLP.ThemeManager', 'OpenLP Themes (*.otz)'))
self.application.set_busy_cursor()
if export_path:
Settings().setValue(self.settings_section + '/last directory export', export_path.parent)
if self._export_theme(export_path.with_suffix('.otz'), theme_name):
QtWidgets.QMessageBox.information(self,
translate('OpenLP.ThemeManager', 'Theme Exported'),
translate('OpenLP.ThemeManager',
'Your theme has been successfully exported.'))
self.application.set_normal_cursor()
def _export_theme(self, theme_path, theme_name):
"""
Create the zipfile with the theme contents.
:param openlp.core.common.path.Path theme_path: Location where the zip file will be placed
:param str theme_name: The name of the theme to be exported
:return: The success of creating the zip file
:rtype: bool
"""
try:
with zipfile.ZipFile(str(theme_path), 'w') as theme_zip:
source_path = self.theme_path / theme_name
for file_path in source_path.iterdir():
theme_zip.write(str(file_path), os.path.join(theme_name, file_path.name))
return True
except OSError as ose:
self.log_exception('Export Theme Failed')
critical_error_message_box(translate('OpenLP.ThemeManager', 'Theme Export Failed'),
translate('OpenLP.ThemeManager',
'The {theme_name} export failed because this error occurred: {err}')
.format(theme_name=theme_name, err=ose.strerror))
if theme_path.exists():
theme_path.rmtree(ignore_errors=True)
return False
def on_import_theme(self, checked=None):
"""
Opens a file dialog to select the theme file(s) to import before attempting to extract OpenLP themes from
those files. This process will only load version 2 themes.
:param bool checked: Sent by the QAction.triggered signal. It's not used in this method.
:rtype: None
"""
file_paths, filter_used = FileDialog.getOpenFileNames(
self,
translate('OpenLP.ThemeManager', 'Select Theme Import File'),
Settings().value(self.settings_section + '/last directory import'),
translate('OpenLP.ThemeManager', 'OpenLP Themes (*.otz)'))
self.log_info('New Themes {file_paths}'.format(file_paths=file_paths))
if not file_paths:
return
self.application.set_busy_cursor()
for file_path in file_paths:
self.unzip_theme(file_path, self.theme_path)
Settings().setValue(self.settings_section + '/last directory import', file_path.parent)
self.load_themes()
self.application.set_normal_cursor()
def load_first_time_themes(self):
"""
Imports any themes on start up and makes sure there is at least one theme
"""
self.application.set_busy_cursor()
theme_paths = AppLocation.get_files(self.settings_section, '.otz')
for theme_path in theme_paths:
theme_path = self.theme_path / theme_path
self.unzip_theme(theme_path, self.theme_path)
delete_file(theme_path)
theme_paths = AppLocation.get_files(self.settings_section, '.png')
# No themes have been found so create one
if not theme_paths:
theme = Theme()
theme.theme_name = UiStrings().Default
self._write_theme(theme)
Settings().setValue(self.settings_section + '/global theme', theme.theme_name)
self.application.set_normal_cursor()
def load_themes(self):
"""
Loads the theme lists and triggers updates across the whole system using direct calls or core functions and
events for the plugins.
The plugins will call back in to get the real list if they want it.
"""
self.theme_list = []
self.theme_list_widget.clear()
files = AppLocation.get_files(self.settings_section, '.png')
# Sort the themes by its name considering language specific
files.sort(key=lambda file_name: get_locale_key(str(file_name)))
# now process the file list of png files
for file in files:
# check to see file is in theme root directory
theme_path = self.theme_path / file
if theme_path.exists():
text_name = theme_path.stem
if text_name == self.global_theme:
name = translate('OpenLP.ThemeManager', '{name} (default)').format(name=text_name)
else:
name = text_name
thumb_path = self.thumb_path / '{name}.png'.format(name=text_name)
item_name = QtWidgets.QListWidgetItem(name)
if validate_thumb(theme_path, thumb_path):
icon = build_icon(thumb_path)
else:
icon = create_thumb(theme_path, thumb_path)
item_name.setIcon(icon)
item_name.setData(QtCore.Qt.UserRole, text_name)
self.theme_list_widget.addItem(item_name)
self.theme_list.append(text_name)
self._push_themes()
def _push_themes(self):
"""
Notify listeners that the theme list has been updated
"""
Registry().execute('theme_update_list', self.get_themes())
def get_themes(self):
"""
Return the list of loaded themes
"""
return self.theme_list
def get_theme_data(self, theme_name):
"""
Returns a theme object from a JSON file
:param str theme_name: Name of the theme to load from file
:return: The theme object.
:rtype: Theme
"""
theme_name = str(theme_name)
theme_file_path = self.theme_path / theme_name / '{file_name}.json'.format(file_name=theme_name)
theme_data = get_text_file_string(theme_file_path)
if not theme_data:
self.log_debug('No theme data - using default theme')
return Theme()
return self._create_theme_from_json(theme_data, self.theme_path)
def over_write_message_box(self, theme_name):
"""
Display a warning box to the user that a theme already exists
:param theme_name: Name of the theme.
:return: Confirm if the theme is to be overwritten.
"""
ret = QtWidgets.QMessageBox.question(self, translate('OpenLP.ThemeManager', 'Theme Already Exists'),
translate('OpenLP.ThemeManager',
'Theme {name} already exists. '
'Do you want to replace it?').format(name=theme_name),
defaultButton=QtWidgets.QMessageBox.No)
return ret == QtWidgets.QMessageBox.Yes
def unzip_theme(self, file_path, directory_path):
"""
Unzip the theme, remove the preview file if stored. Generate a new preview file. Check the XML theme version
and upgrade if necessary.
:param openlp.core.common.path.Path file_path:
:param openlp.core.common.path.Path directory_path:
"""
self.log_debug('Unzipping theme {name}'.format(name=file_path))
file_xml = None
abort_import = True
json_theme = False
theme_name = ""
try:
with zipfile.ZipFile(str(file_path)) as theme_zip:
json_file = [name for name in theme_zip.namelist() if os.path.splitext(name)[1].lower() == '.json']
if len(json_file) != 1:
# TODO: remove XML handling after the 2.6 release.
xml_file = [name for name in theme_zip.namelist() if os.path.splitext(name)[1].lower() == '.xml']
if len(xml_file) != 1:
self.log_error('Theme contains "{val:d}" theme files'.format(val=len(xml_file)))
raise ValidationError
xml_tree = ElementTree(element=XML(theme_zip.read(xml_file[0]))).getroot()
theme_version = xml_tree.get('version', default=None)
if not theme_version or float(theme_version) < 2.0:
self.log_error('Theme version is less than 2.0')
raise ValidationError
theme_name = xml_tree.find('name').text.strip()
else:
new_theme = Theme()
new_theme.load_theme(theme_zip.read(json_file[0]).decode("utf-8"))
theme_name = new_theme.theme_name
json_theme = True
theme_folder = directory_path / theme_name
if theme_folder.exists() and not self.over_write_message_box(theme_name):
abort_import = True
return
else:
abort_import = False
for zipped_file in theme_zip.namelist():
zipped_file_rel_path = Path(zipped_file)
split_name = zipped_file_rel_path.parts
if split_name[-1] == '' or len(split_name) == 1:
# is directory or preview file
continue
full_name = directory_path / zipped_file_rel_path
create_paths(full_name.parent)
if zipped_file_rel_path.suffix.lower() == '.xml' or zipped_file_rel_path.suffix.lower() == '.json':
file_xml = str(theme_zip.read(zipped_file), 'utf-8')
with full_name.open('w', encoding='utf-8') as out_file:
out_file.write(file_xml)
else:
with full_name.open('wb') as out_file:
out_file.write(theme_zip.read(zipped_file))
except (OSError, zipfile.BadZipFile):
self.log_exception('Importing theme from zip failed {name}'.format(name=file_path))
raise ValidationError
except ValidationError:
critical_error_message_box(translate('OpenLP.ThemeManager', 'Validation Error'),
translate('OpenLP.ThemeManager', 'File is not a valid theme.'))
finally:
if not abort_import:
# As all files are closed, we can create the Theme.
if file_xml:
if json_theme:
theme = self._create_theme_from_json(file_xml, self.theme_path)
else:
theme = self._create_theme_from_xml(file_xml, self.theme_path)
self.generate_and_save_image(theme_name, theme)
def check_if_theme_exists(self, theme_name):
"""
Check if theme already exists and displays error message
:param str theme_name: Name of the Theme to test
:return: True or False if theme exists
:rtype: bool
"""
if (self.theme_path / theme_name).exists():
critical_error_message_box(
translate('OpenLP.ThemeManager', 'Validation Error'),
translate('OpenLP.ThemeManager', 'A theme with this name already exists.'))
return False
return True
def save_theme(self, theme, image_source_path, image_destination_path):
"""
Called by theme maintenance Dialog to save the theme and to trigger the reload of the theme list
:param Theme theme: The theme data object.
:param openlp.core.common.path.Path image_source_path: Where the theme image is currently located.
:param openlp.core.common.path.Path image_destination_path: Where the Theme Image is to be saved to
:rtype: None
"""
self._write_theme(theme, image_source_path, image_destination_path)
if theme.background_type == BackgroundType.to_string(BackgroundType.Image):
self.image_manager.update_image_border(path_to_str(theme.background_filename),
ImageSource.Theme,
QtGui.QColor(theme.background_border_color))
self.image_manager.process_updates()
def _write_theme(self, theme, image_source_path=None, image_destination_path=None):
"""
Writes the theme to the disk and handles the background image if necessary
:param Theme theme: The theme data object.
:param openlp.core.common.path.Path image_source_path: Where the theme image is currently located.
:param openlp.core.common.path.Path image_destination_path: Where the Theme Image is to be saved to
:rtype: None
"""
name = theme.theme_name
theme_pretty = theme.export_theme(self.theme_path)
theme_dir = self.theme_path / name
create_paths(theme_dir)
theme_path = theme_dir / '{file_name}.json'.format(file_name=name)
try:
theme_path.write_text(theme_pretty)
except OSError:
self.log_exception('Saving theme to file failed')
if image_source_path and image_destination_path:
if self.old_background_image_path and image_destination_path != self.old_background_image_path:
delete_file(self.old_background_image_path)
if image_source_path != image_destination_path:
try:
copyfile(image_source_path, image_destination_path)
except OSError:
self.log_exception('Failed to save theme image')
self.generate_and_save_image(name, theme)
def generate_and_save_image(self, theme_name, theme):
"""
Generate and save a preview image
:param str theme_name: The name of the theme.
:param theme: The theme data object.
"""
frame = self.generate_image(theme)
sample_path_name = self.theme_path / '{file_name}.png'.format(file_name=theme_name)
if sample_path_name.exists():
sample_path_name.unlink()
frame.save(str(sample_path_name), 'png')
thumb_path = self.thumb_path / '{name}.png'.format(name=theme_name)
create_thumb(sample_path_name, thumb_path, False)
def update_preview_images(self):
"""
Called to update the themes' preview images.
"""
self.main_window.display_progress_bar(len(self.theme_list))
for theme in self.theme_list:
self.main_window.increment_progress_bar()
self.generate_and_save_image(theme, self.get_theme_data(theme))
self.main_window.finished_progress_bar()
self.load_themes()
def generate_image(self, theme_data, force_page=False):
"""
Call the renderer to build a Sample Image
:param theme_data: The theme to generated a preview for.
:param force_page: Flag to tell message lines per page need to be generated.
:rtype: QtGui.QPixmap
"""
return self.renderer.generate_preview(theme_data, force_page)
@staticmethod
def _create_theme_from_xml(theme_xml, image_path):
"""
Return a theme object using information parsed from XML
:param theme_xml: The Theme data object.
:param openlp.core.common.path.Path image_path: Where the theme image is stored
:return: Theme data.
:rtype: Theme
"""
theme = Theme()
theme.parse(theme_xml)
theme.extend_image_filename(image_path)
return theme
def _create_theme_from_json(self, theme_json, image_path):
"""
Return a theme object using information parsed from JSON
:param theme_json: The Theme data object.
:param openlp.core.common.path.Path image_path: Where the theme image is stored
:return: Theme data.
:rtype: Theme
"""
theme = Theme()
theme.load_theme(theme_json, self.theme_path)
theme.extend_image_filename(image_path)
return theme
def _validate_theme_action(self, select_text, confirm_title, confirm_text, test_plugin=True, confirm=True):
"""
Check to see if theme has been selected and the destructive action is allowed.
:param select_text: Text for message box if no item selected.
:param confirm_title: Confirm message title to be displayed.
:param confirm_text: Confirm message text to be displayed.
:param test_plugin: Do we check the plugins for theme usage.
:param confirm: Do we display a confirm box before run checks.
:return: True or False depending on the validity.
"""
self.global_theme = Settings().value(self.settings_section + '/global theme')
if check_item_selected(self.theme_list_widget, select_text):
item = self.theme_list_widget.currentItem()
theme = item.text()
# confirm deletion
if confirm:
answer = QtWidgets.QMessageBox.question(
self, confirm_title, confirm_text.format(theme_name=theme),
defaultButton=QtWidgets.QMessageBox.No)
if answer == QtWidgets.QMessageBox.No:
return False
# should be the same unless default
if theme != item.data(QtCore.Qt.UserRole):
critical_error_message_box(
message=translate('OpenLP.ThemeManager', 'You are unable to delete the default theme.'))
return False
# check for use in the system else where.
if test_plugin:
plugin_usage = ""
for plugin in self.plugin_manager.plugins:
used_count = plugin.uses_theme(theme)
if used_count:
plugin_usage = "{plug}{text}".format(plug=plugin_usage,
text=(translate('OpenLP.ThemeManager',
'{count} time(s) by {plugin}'
).format(name=used_count,
plugin=plugin.name)))
plugin_usage = "{text}\n".format(text=plugin_usage)
if plugin_usage:
critical_error_message_box(translate('OpenLP.ThemeManager', 'Unable to delete theme'),
translate('OpenLP.ThemeManager',
'Theme is currently used \n\n{text}'
).format(text=plugin_usage))
return False
return True
return False
