class FileSwitcher(QDialog):
"""A Sublime-like file switcher."""
sig_goto_file = Signal(int)
sig_close_file = Signal(int)
# Constants that define the mode in which the list widget is working
# FILE_MODE is for a list of files, SYMBOL_MODE if for a list of symbols
# in a given file when using the '@' symbol.
FILE_MODE, SYMBOL_MODE = [1, 2]
def __init__(self, parent, tabs, data):
QDialog.__init__(self, parent)
# Variables
self.tabs = tabs # Editor stack tabs
self.data = data # Editor data
self.mode = self.FILE_MODE # By default start in this mode
self.initial_cursors = None # {fullpath: QCursor}
self.initial_path = None # Fullpath of initial active editor
self.initial_editor = None # Initial active editor
self.line_number = None # Selected line number in filer
self.is_visible = False # Is the switcher visible?
help_text = _("Press <b>Enter</b> to switch files or <b>Esc</b> to "
"cancel.<br><br>Type to filter filenames.<br><br>"
"Use <b>:number</b> to go to a line, e.g. "
"<b><code>main:42</code></b><br>"
"Use <b>@symbol_text</b> to go to a symbol, e.g. "
"<b><code>@init</code></b>"
"<br><br> Press <b>Ctrl+W</b> to close current tab.<br>")
# Either allow searching for a line number or a symbol but not both
regex = QRegExp("([A-Za-z0-9_]{0,100}@[A-Za-z0-9_]{0,100})|" +
"([A-Za-z]{0,100}:{0,1}[0-9]{0,100})")
# Widgets
self.edit = QLineEdit(self)
self.help = HelperToolButton()
self.list = QListWidget(self)
self.filter = KeyPressFilter()
regex_validator = QRegExpValidator(regex, self.edit)
# Widgets setup
self.setWindowFlags(Qt.Popup | Qt.FramelessWindowHint)
self.setWindowOpacity(0.95)
self.edit.installEventFilter(self.filter)
self.edit.setValidator(regex_validator)
self.help.setToolTip(help_text)
self.list.setItemDelegate(HTMLDelegate(self))
# Layout
edit_layout = QHBoxLayout()
edit_layout.addWidget(self.edit)
edit_layout.addWidget(self.help)
layout = QVBoxLayout()
layout.addLayout(edit_layout)
layout.addWidget(self.list)
self.setLayout(layout)
# Signals
self.rejected.connect(self.restore_initial_state)
self.filter.sig_up_key_pressed.connect(self.previous_row)
self.filter.sig_down_key_pressed.connect(self.next_row)
self.edit.returnPressed.connect(self.accept)
self.edit.textChanged.connect(self.setup)
self.list.itemSelectionChanged.connect(self.item_selection_changed)
self.list.clicked.connect(self.edit.setFocus)
# Setup
self.save_initial_state()
self.set_dialog_position()
self.setup()
# --- Properties
@property
def editors(self):
return [self.tabs.widget(index) for index in range(self.tabs.count())]
@property
def line_count(self):
return [editor.get_line_count() for editor in self.editors]
@property
def save_status(self):
return [getattr(td, 'newly_created', False) for td in self.data]
@property
def paths(self):
return [getattr(td, 'filename', None) for td in self.data]
@property
def filenames(self):
return [self.tabs.tabText(index) for index in range(self.tabs.count())]
@property
def current_path(self):
return self.paths_by_editor[self.get_editor()]
@property
def paths_by_editor(self):
return dict(zip(self.editors, self.paths))
@property
def editors_by_path(self):
return dict(zip(self.paths, self.editors))
@property
def filter_text(self):
"""Get the normalized (lowecase) content of the filter text."""
return to_text_string(self.edit.text()).lower()
def save_initial_state(self):
"""Saves initial cursors and initial active editor."""
paths = self.paths
self.initial_editor = self.get_editor()
self.initial_cursors = {}
for i, editor in enumerate(self.editors):
if editor is self.initial_editor:
self.initial_path = paths[i]
self.initial_cursors[paths[i]] = editor.textCursor()
def accept(self):
self.is_visible = False
QDialog.accept(self)
self.list.clear()
def restore_initial_state(self):
"""Restores initial cursors and initial active editor."""
self.list.clear()
self.is_visible = False
editors = self.editors_by_path
for path in self.initial_cursors:
cursor = self.initial_cursors[path]
if path in editors:
self.set_editor_cursor(editors[path], cursor)
if self.initial_editor in self.paths_by_editor:
index = self.paths.index(self.initial_path)
self.sig_goto_file.emit(index)
def set_dialog_position(self):
"""Positions the file switcher dialog in the center of the editor."""
parent = self.parent()
geo = parent.geometry()
width = self.list.width() # This has been set in setup
left = parent.geometry().width()/2 - width/2
top = 0
while parent:
geo = parent.geometry()
top += geo.top()
left += geo.left()
parent = parent.parent()
# Note: the +1 pixel on the top makes it look better
self.move(left, top + self.tabs.tabBar().geometry().height() + 1)
def fix_size(self, content, extra=50):
"""Adjusts the width of the file switcher, based on the content."""
# Update size of dialog based on longest shortened path
strings = []
if content:
for rich_text in content:
label = QLabel(rich_text)
label.setTextFormat(Qt.PlainText)
strings.append(label.text())
fm = label.fontMetrics()
max_width = max([fm.width(s)*1.3 for s in strings])
self.list.setMinimumWidth(max_width + extra)
self.set_dialog_position()
# --- Helper methods: List widget
def count(self):
"""Gets the item count in the list widget."""
return self.list.count()
def current_row(self):
"""Returns the current selected row in the list widget."""
return self.list.currentRow()
def set_current_row(self, row):
"""Sets the current selected row in the list widget."""
return self.list.setCurrentRow(row)
def select_row(self, steps):
"""Select row in list widget based on a number of steps with direction.
Steps can be positive (next rows) or negative (previous rows).
"""
row = self.current_row() + steps
if 0 <= row < self.count():
self.set_current_row(row)
def previous_row(self):
"""Select previous row in list widget."""
self.select_row(-1)
def next_row(self):
"""Select next row in list widget."""
self.select_row(+1)
# --- Helper methods: Editor
def get_editor(self, index=None, path=None):
"""Get editor by index or path.
If no path or index specified the current active editor is returned
"""
if index:
return self.tabs.widget(index)
elif path:
return self.tabs.widget(index)
else:
return self.parent().get_current_editor()
def set_editor_cursor(self, editor, cursor):
"""Set the cursor of an editor."""
pos = cursor.position()
anchor = cursor.anchor()
new_cursor = QTextCursor()
if pos == anchor:
new_cursor.movePosition(pos)
else:
new_cursor.movePosition(anchor)
new_cursor.movePosition(pos, QTextCursor.KeepAnchor)
editor.setTextCursor(cursor)
def goto_line(self, line_number):
"""Go to specified line number in current active editor."""
if line_number:
line_number = int(line_number)
editor = self.get_editor()
editor.go_to_line(min(line_number, editor.get_line_count()))
# --- Helper methods: Outline explorer
def get_symbol_list(self):
"""Get the object explorer data."""
return self.get_editor().highlighter.get_outlineexplorer_data()
# --- Handlers
def item_selection_changed(self):
"""List widget item selection change handler."""
row = self.current_row()
if self.count() and row >= 0:
if self.mode == self.FILE_MODE:
try:
stack_index = self.paths.index(self.filtered_path[row])
self.sig_goto_file.emit(stack_index)
self.goto_line(self.line_number)
self.edit.setFocus()
except ValueError:
pass
else:
line_number = self.filtered_symbol_lines[row]
self.goto_line(line_number)
def setup_file_list(self, filter_text, current_path):
"""Setup list widget content for file list display."""
short_paths = shorten_paths(self.paths, self.save_status)
paths = self.paths
results = []
trying_for_line_number = ':' in filter_text
# Get optional line number
if trying_for_line_number:
filter_text, line_number = filter_text.split(':')
else:
line_number = None
# Get all available filenames and get the scores for "fuzzy" matching
scores = get_search_scores(filter_text, self.filenames,
template="<b>{0}</b>")
# Build the text that will appear on the list widget
for index, score in enumerate(scores):
text, rich_text, score_value = score
if score_value != -1:
text_item = '<big>' + rich_text + '</big>'
if trying_for_line_number:
text_item += " [{0:} {1:}]".format(self.line_count[index],
_("lines"))
text_item += "<br><i>{0:}</i>".format(
short_paths[index])
results.append((score_value, index, text_item))
# Sort the obtained scores and populate the list widget
self.filtered_path = []
for result in sorted(results):
index = result[1]
text = result[-1]
path = paths[index]
item = QListWidgetItem(self.tabs.tabIcon(index), text)
item.setToolTip(path)
item.setSizeHint(QSize(0, 25))
self.list.addItem(item)
self.filtered_path.append(path)
# Move selected item in list accordingly and update list size
if current_path in self.filtered_path:
self.set_current_row(self.filtered_path.index(current_path))
elif self.filtered_path:
self.set_current_row(0)
self.fix_size(short_paths)
# If a line number is searched look for it
self.line_number = line_number
self.goto_line(line_number)
def setup_symbol_list(self, filter_text, current_path):
"""Setup list widget content for symbol list display."""
# Get optional symbol name
filter_text, symbol_text = filter_text.split('@')
# Fetch the Outline explorer data, get the icons and values
oedata = self.get_symbol_list()
icons = get_python_symbol_icons(oedata)
symbol_list = process_python_symbol_data(oedata)
line_fold_token = [(item[0], item[2], item[3]) for item in symbol_list]
choices = [item[1] for item in symbol_list]
scores = get_search_scores(symbol_text, choices, template="<b>{0}</b>")
# Build the text that will appear on the list widget
results = []
lines = []
self.filtered_symbol_lines = []
for index, score in enumerate(scores):
text, rich_text, score_value = score
line, fold_level, token = line_fold_token[index]
lines.append(text)
if score_value != -1:
results.append((score_value, line, text, rich_text,
fold_level, icons[index], token))
template_1 = '<code>{0}<big>{1} {2}</big></code>'
template_2 = '<br><code>{0}</code><i>[Line {1}]</i>'
for (score, line, text, rich_text, fold_level, icon,
token) in sorted(results):
fold_space = ' '*(fold_level)
line_number = line + 1
self.filtered_symbol_lines.append(line_number)
textline = template_1.format(fold_space, token, rich_text)
textline += template_2.format(fold_space, line_number)
item = QListWidgetItem(icon, textline)
item.setSizeHint(QSize(0, 16))
self.list.addItem(item)
# Move selected item in list accordingly
# NOTE: Doing this is causing two problems:
# 1. It makes the cursor to auto-jump to the last selected
# symbol after opening or closing a different file
# 2. It moves the cursor to the first symbol by default,
# which is very distracting.
# That's why this line is commented!
# self.set_current_row(0)
# Update list size
self.fix_size(lines, extra=125)
def setup(self):
"""Setup list widget content."""
if not self.tabs.count():
self.close()
return
self.list.clear()
current_path = self.current_path
filter_text = self.filter_text
# Get optional line or symbol to define mode and method handler
trying_for_symbol = ('@' in self.filter_text)
if trying_for_symbol:
self.mode = self.SYMBOL_MODE
self.setup_symbol_list(filter_text, current_path)
else:
self.mode = self.FILE_MODE
self.setup_file_list(filter_text, current_path)
class FileSwitcher(QDialog):
"""A Sublime-like file switcher."""
sig_goto_file = Signal(int, object)
# Constants that define the mode in which the list widget is working
# FILE_MODE is for a list of files, SYMBOL_MODE if for a list of symbols
# in a given file when using the '@' symbol.
FILE_MODE, SYMBOL_MODE = [1, 2]
MAX_WIDTH = 600
def __init__(self, parent, plugin, tabs, data, icon):
QDialog.__init__(self, parent)
# Variables
self.plugins_tabs = []
self.plugins_data = []
self.plugins_instances = []
self.add_plugin(plugin, tabs, data, icon)
self.plugin = None # Last plugin with focus
self.mode = self.FILE_MODE # By default start in this mode
self.initial_cursors = None # {fullpath: QCursor}
self.initial_path = None # Fullpath of initial active editor
self.initial_widget = None # Initial active editor
self.line_number = None # Selected line number in filer
self.is_visible = False # Is the switcher visible?
help_text = _("Press <b>Enter</b> to switch files or <b>Esc</b> to "
"cancel.<br><br>Type to filter filenames.<br><br>"
"Use <b>:number</b> to go to a line, e.g. "
"<b><code>main:42</code></b><br>"
"Use <b>@symbol_text</b> to go to a symbol, e.g. "
"<b><code>@init</code></b>"
"<br><br> Press <b>Ctrl+W</b> to close current tab.<br>")
# Either allow searching for a line number or a symbol but not both
regex = QRegExp("([A-Za-z0-9_]{0,100}@[A-Za-z0-9_]{0,100})|" +
"([A-Za-z0-9_]{0,100}:{0,1}[0-9]{0,100})")
# Widgets
self.edit = FilesFilterLine(self)
self.help = HelperToolButton()
self.list = QListWidget(self)
self.filter = KeyPressFilter()
regex_validator = QRegExpValidator(regex, self.edit)
# Widgets setup
self.setWindowFlags(Qt.Popup | Qt.FramelessWindowHint)
self.setWindowOpacity(0.95)
self.edit.installEventFilter(self.filter)
self.edit.setValidator(regex_validator)
self.help.setToolTip(help_text)
self.list.setItemDelegate(HTMLDelegate(self))
# Layout
edit_layout = QHBoxLayout()
edit_layout.addWidget(self.edit)
edit_layout.addWidget(self.help)
layout = QVBoxLayout()
layout.addLayout(edit_layout)
layout.addWidget(self.list)
self.setLayout(layout)
# Signals
self.rejected.connect(self.restore_initial_state)
self.filter.sig_up_key_pressed.connect(self.previous_row)
self.filter.sig_down_key_pressed.connect(self.next_row)
self.edit.returnPressed.connect(self.accept)
self.edit.textChanged.connect(self.setup)
self.list.itemSelectionChanged.connect(self.item_selection_changed)
self.list.clicked.connect(self.edit.setFocus)
# --- Properties
@property
def widgets(self):
widgets = []
for tabs, plugin in self.plugins_tabs:
widgets += [(tabs.widget(index), plugin) for
index in range(tabs.count())]
return widgets
@property
def line_count(self):
line_count = []
for widget in self.widgets:
try:
current_line_count = widget[0].get_line_count()
except AttributeError:
current_line_count = 0
line_count.append(current_line_count)
return line_count
@property
def save_status(self):
save_status = []
for da, icon in self.plugins_data:
save_status += [getattr(td, 'newly_created', False) for td in da]
return save_status
@property
def paths(self):
paths = []
for da, icon in self.plugins_data:
paths += [getattr(td, 'filename', None) for td in da]
return paths
@property
def filenames(self):
filenames = []
for da, icon in self.plugins_data:
filenames += [os.path.basename(getattr(td,
'filename',
None)) for td in da]
return filenames
@property
def icons(self):
icons = []
for da, icon in self.plugins_data:
icons += [icon for td in da]
return icons
@property
def current_path(self):
return self.paths_by_widget[self.get_widget()]
@property
def paths_by_widget(self):
widgets = [w[0] for w in self.widgets]
return dict(zip(widgets, self.paths))
@property
def widgets_by_path(self):
widgets = [w[0] for w in self.widgets]
return dict(zip(self.paths, widgets))
@property
def filter_text(self):
"""Get the normalized (lowecase) content of the filter text."""
return to_text_string(self.edit.text()).lower()
def set_search_text(self, _str):
self.edit.setText(_str)
def save_initial_state(self):
"""Save initial cursors and initial active widget."""
paths = self.paths
self.initial_widget = self.get_widget()
self.initial_cursors = {}
for i, editor in enumerate(self.widgets):
if editor is self.initial_widget:
self.initial_path = paths[i]
# This try is needed to make the fileswitcher work with
# plugins that does not have a textCursor.
try:
self.initial_cursors[paths[i]] = editor.textCursor()
except AttributeError:
pass
def accept(self):
self.is_visible = False
QDialog.accept(self)
self.list.clear()
def restore_initial_state(self):
"""Restores initial cursors and initial active editor."""
self.list.clear()
self.is_visible = False
widgets = self.widgets_by_path
if not self.edit.clicked_outside:
for path in self.initial_cursors:
cursor = self.initial_cursors[path]
if path in widgets:
self.set_editor_cursor(widgets[path], cursor)
if self.initial_widget in self.paths_by_widget:
index = self.paths.index(self.initial_path)
self.sig_goto_file.emit(index)
def set_dialog_position(self):
"""Positions the file switcher dialog."""
parent = self.parent()
geo = parent.geometry()
width = self.list.width() # This has been set in setup
left = parent.geometry().width()/2 - width/2
# Note: the +1 pixel on the top makes it look better
if isinstance(parent, QMainWindow):
top = (parent.toolbars_menu.geometry().height() +
parent.menuBar().geometry().height() + 1)
else:
top = self.plugins_tabs[0][0].tabBar().geometry().height() + 1
while parent:
geo = parent.geometry()
top += geo.top()
left += geo.left()
parent = parent.parent()
self.move(left, top)
def get_item_size(self, content):
"""
Get the max size (width and height) for the elements of a list of
strings as a QLabel.
"""
strings = []
if content:
for rich_text in content:
label = QLabel(rich_text)
label.setTextFormat(Qt.PlainText)
strings.append(label.text())
fm = label.fontMetrics()
return (max([fm.width(s) * 1.3 for s in strings]), fm.height())
def fix_size(self, content):
"""
Adjusts the width and height of the file switcher
based on the relative size of the parent and content.
"""
# Update size of dialog based on relative size of the parent
if content:
width, height = self.get_item_size(content)
# Width
parent = self.parent()
relative_width = parent.geometry().width() * 0.65
if relative_width > self.MAX_WIDTH:
relative_width = self.MAX_WIDTH
self.list.setMinimumWidth(relative_width)
# Height
if len(content) < 8:
max_entries = len(content)
else:
max_entries = 8
max_height = height * max_entries * 2.5
self.list.setMinimumHeight(max_height)
# Resize
self.list.resize(relative_width, self.list.height())
# --- Helper methods: List widget
def count(self):
"""Gets the item count in the list widget."""
return self.list.count()
def current_row(self):
"""Returns the current selected row in the list widget."""
return self.list.currentRow()
def set_current_row(self, row):
"""Sets the current selected row in the list widget."""
return self.list.setCurrentRow(row)
def select_row(self, steps):
"""Select row in list widget based on a number of steps with direction.
Steps can be positive (next rows) or negative (previous rows).
"""
row = self.current_row() + steps
if 0 <= row < self.count():
self.set_current_row(row)
def previous_row(self):
"""Select previous row in list widget."""
if self.mode == self.SYMBOL_MODE:
self.select_row(-1)
return
prev_row = self.current_row() - 1
if prev_row >= 0:
title = self.list.item(prev_row).text()
else:
title = ''
if prev_row == 0 and '</b></big><br>' in title:
self.list.scrollToTop()
elif '</b></big><br>' in title:
# Select the next previous row, the one following is a title
self.select_row(-2)
else:
self.select_row(-1)
def next_row(self):
"""Select next row in list widget."""
if self.mode == self.SYMBOL_MODE:
self.select_row(+1)
return
next_row = self.current_row() + 1
if next_row < self.count():
if '</b></big><br>' in self.list.item(next_row).text():
# Select the next next row, the one following is a title
self.select_row(+2)
else:
self.select_row(+1)
def get_stack_index(self, stack_index, plugin_index):
"""Get the real index of the selected item."""
other_plugins_count = sum([other_tabs[0].count() \
for other_tabs in \
self.plugins_tabs[:plugin_index]])
real_index = stack_index - other_plugins_count
return real_index
# --- Helper methods: Widget
def get_widget(self, index=None, path=None, tabs=None):
"""Get widget by index.
If no tabs and index specified the current active widget is returned.
"""
if index and tabs:
return tabs.widget(index)
elif path and tabs:
return tabs.widget(index)
elif self.plugin:
index = self.plugins_instances.index(self.plugin)
return self.plugins_tabs[index][0].currentWidget()
else:
return self.plugins_tabs[0][0].currentWidget()
def set_editor_cursor(self, editor, cursor):
"""Set the cursor of an editor."""
pos = cursor.position()
anchor = cursor.anchor()
new_cursor = QTextCursor()
if pos == anchor:
new_cursor.movePosition(pos)
else:
new_cursor.movePosition(anchor)
new_cursor.movePosition(pos, QTextCursor.KeepAnchor)
editor.setTextCursor(cursor)
def goto_line(self, line_number):
"""Go to specified line number in current active editor."""
if line_number:
line_number = int(line_number)
editor = self.get_widget()
try:
editor.go_to_line(min(line_number, editor.get_line_count()))
except AttributeError:
pass
# --- Helper methods: Outline explorer
def get_symbol_list(self):
"""Get the list of symbols present in the file."""
try:
oedata = self.get_widget().get_outlineexplorer_data()
except AttributeError:
oedata = {}
return oedata
# --- Handlers
def item_selection_changed(self):
"""List widget item selection change handler."""
row = self.current_row()
if self.count() and row >= 0:
if '</b></big><br>' in self.list.currentItem().text() and row == 0:
self.next_row()
if self.mode == self.FILE_MODE:
try:
stack_index = self.paths.index(self.filtered_path[row])
self.plugin = self.widgets[stack_index][1]
plugin_index = self.plugins_instances.index(self.plugin)
# Count the real index in the tabWidget of the
# current plugin
real_index = self.get_stack_index(stack_index,
plugin_index)
self.sig_goto_file.emit(real_index,
self.plugin.get_current_tab_manager())
self.goto_line(self.line_number)
try:
self.plugin.switch_to_plugin()
self.raise_()
except AttributeError:
# The widget using the fileswitcher is not a plugin
pass
self.edit.setFocus()
except ValueError:
pass
else:
line_number = self.filtered_symbol_lines[row]
self.goto_line(line_number)
def setup_file_list(self, filter_text, current_path):
"""Setup list widget content for file list display."""
short_paths = shorten_paths(self.paths, self.save_status)
paths = self.paths
icons = self.icons
results = []
trying_for_line_number = ':' in filter_text
# Get optional line number
if trying_for_line_number:
filter_text, line_number = filter_text.split(':')
# Get all the available filenames
scores = get_search_scores('', self.filenames,
template="<b>{0}</b>")
else:
line_number = None
# Get all available filenames and get the scores for
# "fuzzy" matching
scores = get_search_scores(filter_text, self.filenames,
template="<b>{0}</b>")
# Get max width to determine if shortpaths should be used
max_width = self.get_item_size(paths)[0]
self.fix_size(paths)
# Build the text that will appear on the list widget
for index, score in enumerate(scores):
text, rich_text, score_value = score
if score_value != -1:
text_item = '<big>' + rich_text.replace('&', '') + '</big>'
if trying_for_line_number:
text_item += " [{0:} {1:}]".format(self.line_count[index],
_("lines"))
if max_width > self.list.width():
text_item += u"<br><i>{0:}</i>".format(short_paths[index])
else:
text_item += u"<br><i>{0:}</i>".format(paths[index])
if (trying_for_line_number and self.line_count[index] != 0 or
not trying_for_line_number):
results.append((score_value, index, text_item))
# Sort the obtained scores and populate the list widget
self.filtered_path = []
plugin = None
for result in sorted(results):
index = result[1]
path = paths[index]
icon = icons[index]
text = ''
try:
title = self.widgets[index][1].get_plugin_title().split(' - ')
if plugin != title[0]:
plugin = title[0]
text += '<br><big><b>' + plugin + '</b></big><br>'
item = QListWidgetItem(text)
item.setToolTip(path)
item.setSizeHint(QSize(0, 25))
item.setFlags(Qt.ItemIsEditable)
self.list.addItem(item)
self.filtered_path.append(path)
except:
# The widget using the fileswitcher is not a plugin
pass
text = ''
text += result[-1]
item = QListWidgetItem(icon, text)
item.setToolTip(path)
item.setSizeHint(QSize(0, 25))
self.list.addItem(item)
self.filtered_path.append(path)
# To adjust the delegate layout for KDE themes
self.list.files_list = True
# Move selected item in list accordingly and update list size
if current_path in self.filtered_path:
self.set_current_row(self.filtered_path.index(current_path))
elif self.filtered_path:
self.set_current_row(0)
# If a line number is searched look for it
self.line_number = line_number
self.goto_line(line_number)
def setup_symbol_list(self, filter_text, current_path):
"""Setup list widget content for symbol list display."""
# Get optional symbol name
filter_text, symbol_text = filter_text.split('@')
# Fetch the Outline explorer data, get the icons and values
oedata = self.get_symbol_list()
icons = get_python_symbol_icons(oedata)
# The list of paths here is needed in order to have the same
# point of measurement for the list widget size as in the file list
# See issue 4648
paths = self.paths
# Update list size
self.fix_size(paths)
symbol_list = process_python_symbol_data(oedata)
line_fold_token = [(item[0], item[2], item[3]) for item in symbol_list]
choices = [item[1] for item in symbol_list]
scores = get_search_scores(symbol_text, choices, template="<b>{0}</b>")
# Build the text that will appear on the list widget
results = []
lines = []
self.filtered_symbol_lines = []
for index, score in enumerate(scores):
text, rich_text, score_value = score
line, fold_level, token = line_fold_token[index]
lines.append(text)
if score_value != -1:
results.append((score_value, line, text, rich_text,
fold_level, icons[index], token))
template = '{0}{1}'
for (score, line, text, rich_text, fold_level, icon,
token) in sorted(results):
fold_space = ' '*(fold_level)
line_number = line + 1
self.filtered_symbol_lines.append(line_number)
textline = template.format(fold_space, rich_text)
item = QListWidgetItem(icon, textline)
item.setSizeHint(QSize(0, 16))
self.list.addItem(item)
# To adjust the delegate layout for KDE themes
self.list.files_list = False
# Move selected item in list accordingly
# NOTE: Doing this is causing two problems:
# 1. It makes the cursor to auto-jump to the last selected
# symbol after opening or closing a different file
# 2. It moves the cursor to the first symbol by default,
# which is very distracting.
# That's why this line is commented!
# self.set_current_row(0)
def setup(self):
"""Setup list widget content."""
if len(self.plugins_tabs) == 0:
self.close()
return
self.list.clear()
current_path = self.current_path
filter_text = self.filter_text
# Get optional line or symbol to define mode and method handler
trying_for_symbol = ('@' in self.filter_text)
if trying_for_symbol:
self.mode = self.SYMBOL_MODE
self.setup_symbol_list(filter_text, current_path)
else:
self.mode = self.FILE_MODE
self.setup_file_list(filter_text, current_path)
# Set position according to size
self.set_dialog_position()
def add_plugin(self, plugin, tabs, data, icon):
"""Add a plugin to display its files."""
self.plugins_tabs.append((tabs, plugin))
self.plugins_data.append((data, icon))
self.plugins_instances.append(plugin)
class FileSwitcher(QDialog):
"""A Sublime-like file switcher."""
sig_goto_file = Signal(int, object)
# Constants that define the mode in which the list widget is working
# FILE_MODE is for a list of files, SYMBOL_MODE if for a list of symbols
# in a given file when using the '@' symbol.
FILE_MODE, SYMBOL_MODE = [1, 2]
MAX_WIDTH = 600
def __init__(self, parent, plugin, tabs, data, icon):
QDialog.__init__(self, parent)
# Variables
self.plugins_tabs = []
self.plugins_data = []
self.plugins_instances = []
self.add_plugin(plugin, tabs, data, icon)
self.plugin = None # Last plugin with focus
self.mode = self.FILE_MODE # By default start in this mode
self.initial_cursors = None # {fullpath: QCursor}
self.initial_path = None # Fullpath of initial active editor
self.initial_widget = None # Initial active editor
self.line_number = None # Selected line number in filer
self.is_visible = False # Is the switcher visible?
help_text = _("Press <b>Enter</b> to switch files or <b>Esc</b> to "
"cancel.<br><br>Type to filter filenames.<br><br>"
"Use <b>:number</b> to go to a line, e.g. "
"<b><code>main:42</code></b><br>"
"Use <b>@symbol_text</b> to go to a symbol, e.g. "
"<b><code>@init</code></b>"
"<br><br> Press <b>Ctrl+W</b> to close current tab.<br>")
# Either allow searching for a line number or a symbol but not both
regex = QRegExp("([A-Za-z0-9_]{0,100}@[A-Za-z0-9_]{0,100})|" +
"([A-Za-z0-9_]{0,100}:{0,1}[0-9]{0,100})")
# Widgets
self.edit = FilesFilterLine(self)
self.help = HelperToolButton()
self.list = QListWidget(self)
self.filter = KeyPressFilter()
regex_validator = QRegExpValidator(regex, self.edit)
# Widgets setup
self.setWindowFlags(Qt.Popup | Qt.FramelessWindowHint)
self.setWindowOpacity(0.95)
self.edit.installEventFilter(self.filter)
self.edit.setValidator(regex_validator)
self.help.setToolTip(help_text)
self.list.setItemDelegate(HTMLDelegate(self))
# Layout
edit_layout = QHBoxLayout()
edit_layout.addWidget(self.edit)
edit_layout.addWidget(self.help)
layout = QVBoxLayout()
layout.addLayout(edit_layout)
layout.addWidget(self.list)
self.setLayout(layout)
# Signals
self.rejected.connect(self.restore_initial_state)
self.filter.sig_up_key_pressed.connect(self.previous_row)
self.filter.sig_down_key_pressed.connect(self.next_row)
self.edit.returnPressed.connect(self.accept)
self.edit.textChanged.connect(self.setup)
self.list.itemSelectionChanged.connect(self.item_selection_changed)
self.list.clicked.connect(self.edit.setFocus)
# --- Properties
@property
def widgets(self):
widgets = []
for plugin in self.plugins_instances:
tabs = self.get_plugin_tabwidget(plugin)
widgets += [(tabs.widget(index), plugin)
for index in range(tabs.count())]
return widgets
@property
def line_count(self):
line_count = []
for widget in self.widgets:
try:
current_line_count = widget[0].get_line_count()
except AttributeError:
current_line_count = 0
line_count.append(current_line_count)
return line_count
@property
def save_status(self):
save_status = []
for da, icon in self.plugins_data:
save_status += [getattr(td, 'newly_created', False) for td in da]
return save_status
@property
def paths(self):
paths = []
for plugin in self.plugins_instances:
da = self.get_plugin_data(plugin)
paths += [getattr(td, 'filename', None) for td in da]
return paths
@property
def filenames(self):
filenames = []
for plugin in self.plugins_instances:
da = self.get_plugin_data(plugin)
filenames += [
os.path.basename(getattr(td, 'filename', None)) for td in da
]
return filenames
@property
def icons(self):
icons = []
for da, icon in self.plugins_data:
icons += [icon for td in da]
return icons
@property
def current_path(self):
return self.paths_by_widget[self.get_widget()]
@property
def paths_by_widget(self):
widgets = [w[0] for w in self.widgets]
return dict(zip(widgets, self.paths))
@property
def widgets_by_path(self):
widgets = [w[0] for w in self.widgets]
return dict(zip(self.paths, widgets))
@property
def filter_text(self):
"""Get the normalized (lowecase) content of the filter text."""
return to_text_string(self.edit.text()).lower()
def set_search_text(self, _str):
self.edit.setText(_str)
def save_initial_state(self):
"""Save initial cursors and initial active widget."""
paths = self.paths
self.initial_widget = self.get_widget()
self.initial_cursors = {}
for i, editor in enumerate(self.widgets):
if editor is self.initial_widget:
self.initial_path = paths[i]
# This try is needed to make the fileswitcher work with
# plugins that does not have a textCursor.
try:
self.initial_cursors[paths[i]] = editor.textCursor()
except AttributeError:
pass
def accept(self):
self.is_visible = False
QDialog.accept(self)
self.list.clear()
def restore_initial_state(self):
"""Restores initial cursors and initial active editor."""
self.list.clear()
self.is_visible = False
widgets = self.widgets_by_path
if not self.edit.clicked_outside:
for path in self.initial_cursors:
cursor = self.initial_cursors[path]
if path in widgets:
self.set_editor_cursor(widgets[path], cursor)
if self.initial_widget in self.paths_by_widget:
index = self.paths.index(self.initial_path)
self.sig_goto_file.emit(index)
def set_dialog_position(self):
"""Positions the file switcher dialog."""
parent = self.parent()
geo = parent.geometry()
width = self.list.width() # This has been set in setup
left = parent.geometry().width() / 2 - width / 2
# Note: the +1 pixel on the top makes it look better
if isinstance(parent, QMainWindow):
top = (parent.toolbars_menu.geometry().height() +
parent.menuBar().geometry().height() + 1)
else:
top = self.plugins_tabs[0][0].tabBar().geometry().height() + 1
while parent:
geo = parent.geometry()
top += geo.top()
left += geo.left()
parent = parent.parent()
self.move(left, top)
def get_item_size(self, content):
"""
Get the max size (width and height) for the elements of a list of
strings as a QLabel.
"""
strings = []
if content:
for rich_text in content:
label = QLabel(rich_text)
label.setTextFormat(Qt.PlainText)
strings.append(label.text())
fm = label.fontMetrics()
return (max([fm.width(s) * 1.3 for s in strings]), fm.height())
def fix_size(self, content):
"""
Adjusts the width and height of the file switcher
based on the relative size of the parent and content.
"""
# Update size of dialog based on relative size of the parent
if content:
width, height = self.get_item_size(content)
# Width
parent = self.parent()
relative_width = parent.geometry().width() * 0.65
if relative_width > self.MAX_WIDTH:
relative_width = self.MAX_WIDTH
self.list.setMinimumWidth(relative_width)
# Height
if len(content) < 8:
max_entries = len(content)
else:
max_entries = 8
max_height = height * max_entries * 2.5
self.list.setMinimumHeight(max_height)
# Resize
self.list.resize(relative_width, self.list.height())
# --- Helper methods: List widget
def count(self):
"""Gets the item count in the list widget."""
return self.list.count()
def current_row(self):
"""Returns the current selected row in the list widget."""
return self.list.currentRow()
def set_current_row(self, row):
"""Sets the current selected row in the list widget."""
return self.list.setCurrentRow(row)
def select_row(self, steps):
"""Select row in list widget based on a number of steps with direction.
Steps can be positive (next rows) or negative (previous rows).
"""
row = self.current_row() + steps
if 0 <= row < self.count():
self.set_current_row(row)
def previous_row(self):
"""Select previous row in list widget."""
if self.mode == self.SYMBOL_MODE:
self.select_row(-1)
return
prev_row = self.current_row() - 1
if prev_row >= 0:
title = self.list.item(prev_row).text()
else:
title = ''
if prev_row == 0 and '</b></big><br>' in title:
self.list.scrollToTop()
elif '</b></big><br>' in title:
# Select the next previous row, the one following is a title
self.select_row(-2)
else:
self.select_row(-1)
def next_row(self):
"""Select next row in list widget."""
if self.mode == self.SYMBOL_MODE:
self.select_row(+1)
return
next_row = self.current_row() + 1
if next_row < self.count():
if '</b></big><br>' in self.list.item(next_row).text():
# Select the next next row, the one following is a title
self.select_row(+2)
else:
self.select_row(+1)
def get_stack_index(self, stack_index, plugin_index):
"""Get the real index of the selected item."""
other_plugins_count = sum([other_tabs[0].count() \
for other_tabs in \
self.plugins_tabs[:plugin_index]])
real_index = stack_index - other_plugins_count
return real_index
# --- Helper methods: Widget
def get_plugin_data(self, plugin):
"""Get the data object of the plugin's current tab manager."""
# The data object is named "data" in the editor plugin while it is
# named "clients" in the notebook plugin.
try:
data = plugin.get_current_tab_manager().data
except AttributeError:
data = plugin.get_current_tab_manager().clients
return data
def get_plugin_tabwidget(self, plugin):
"""Get the tabwidget of the plugin's current tab manager."""
# The tab widget is named "tabs" in the editor plugin while it is
# named "tabwidget" in the notebook plugin.
try:
tabwidget = plugin.get_current_tab_manager().tabs
except AttributeError:
tabwidget = plugin.get_current_tab_manager().tabwidget
return tabwidget
def get_widget(self, index=None, path=None, tabs=None):
"""Get widget by index.
If no tabs and index specified the current active widget is returned.
"""
if (index and tabs) or (path and tabs):
return tabs.widget(index)
elif self.plugin:
return self.get_plugin_tabwidget(self.plugin).currentWidget()
else:
return self.plugins_tabs[0][0].currentWidget()
def set_editor_cursor(self, editor, cursor):
"""Set the cursor of an editor."""
pos = cursor.position()
anchor = cursor.anchor()
new_cursor = QTextCursor()
if pos == anchor:
new_cursor.movePosition(pos)
else:
new_cursor.movePosition(anchor)
new_cursor.movePosition(pos, QTextCursor.KeepAnchor)
editor.setTextCursor(cursor)
def goto_line(self, line_number):
"""Go to specified line number in current active editor."""
if line_number:
line_number = int(line_number)
try:
self.plugin.go_to_line(line_number)
except AttributeError:
pass
# --- Helper methods: Outline explorer
def get_symbol_list(self):
"""Get the list of symbols present in the file."""
try:
oedata = self.get_widget().get_outlineexplorer_data()
except AttributeError:
oedata = {}
return oedata
# --- Handlers
def item_selection_changed(self):
"""List widget item selection change handler."""
row = self.current_row()
if self.count() and row >= 0:
if '</b></big><br>' in self.list.currentItem().text() and row == 0:
self.next_row()
if self.mode == self.FILE_MODE:
try:
stack_index = self.paths.index(self.filtered_path[row])
self.plugin = self.widgets[stack_index][1]
plugin_index = self.plugins_instances.index(self.plugin)
# Count the real index in the tabWidget of the
# current plugin
real_index = self.get_stack_index(stack_index,
plugin_index)
self.sig_goto_file.emit(
real_index, self.plugin.get_current_tab_manager())
self.goto_line(self.line_number)
try:
self.plugin.switch_to_plugin()
self.raise_()
except AttributeError:
# The widget using the fileswitcher is not a plugin
pass
self.edit.setFocus()
except ValueError:
pass
else:
line_number = self.filtered_symbol_lines[row]
self.goto_line(line_number)
def setup_file_list(self, filter_text, current_path):
"""Setup list widget content for file list display."""
short_paths = shorten_paths(self.paths, self.save_status)
paths = self.paths
icons = self.icons
results = []
trying_for_line_number = ':' in filter_text
# Get optional line number
if trying_for_line_number:
filter_text, line_number = filter_text.split(':')
if line_number == '':
line_number = None
# Get all the available filenames
scores = get_search_scores('',
self.filenames,
template="<b>{0}</b>")
else:
line_number = None
# Get all available filenames and get the scores for
# "fuzzy" matching
scores = get_search_scores(filter_text,
self.filenames,
template="<b>{0}</b>")
# Get max width to determine if shortpaths should be used
max_width = self.get_item_size(paths)[0]
self.fix_size(paths)
# Build the text that will appear on the list widget
for index, score in enumerate(scores):
text, rich_text, score_value = score
if score_value != -1:
text_item = '<big>' + rich_text.replace('&', '') + '</big>'
if trying_for_line_number:
text_item += " [{0:} {1:}]".format(self.line_count[index],
_("lines"))
if max_width > self.list.width():
text_item += u"<br><i>{0:}</i>".format(short_paths[index])
else:
text_item += u"<br><i>{0:}</i>".format(paths[index])
if (trying_for_line_number and self.line_count[index] != 0
or not trying_for_line_number):
results.append((score_value, index, text_item))
# Sort the obtained scores and populate the list widget
self.filtered_path = []
plugin = None
for result in sorted(results):
index = result[1]
path = paths[index]
icon = icons[index]
text = ''
try:
title = self.widgets[index][1].get_plugin_title().split(' - ')
if plugin != title[0]:
plugin = title[0]
text += '<br><big><b>' + plugin + '</b></big><br>'
item = QListWidgetItem(text)
item.setToolTip(path)
item.setSizeHint(QSize(0, 25))
item.setFlags(Qt.ItemIsEditable)
self.list.addItem(item)
self.filtered_path.append(path)
except:
# The widget using the fileswitcher is not a plugin
pass
text = ''
text += result[-1]
item = QListWidgetItem(icon, text)
item.setToolTip(path)
item.setSizeHint(QSize(0, 25))
self.list.addItem(item)
self.filtered_path.append(path)
# To adjust the delegate layout for KDE themes
self.list.files_list = True
# Move selected item in list accordingly and update list size
if current_path in self.filtered_path:
self.set_current_row(self.filtered_path.index(current_path))
elif self.filtered_path:
self.set_current_row(0)
# If a line number is searched look for it
self.line_number = line_number
self.goto_line(line_number)
def setup_symbol_list(self, filter_text, current_path):
"""Setup list widget content for symbol list display."""
# Get optional symbol name
filter_text, symbol_text = filter_text.split('@')
# Fetch the Outline explorer data, get the icons and values
oedata = self.get_symbol_list()
icons = get_python_symbol_icons(oedata)
# The list of paths here is needed in order to have the same
# point of measurement for the list widget size as in the file list
# See issue 4648
paths = self.paths
# Update list size
self.fix_size(paths)
symbol_list = process_python_symbol_data(oedata)
line_fold_token = [(item[0], item[2], item[3]) for item in symbol_list]
choices = [item[1] for item in symbol_list]
scores = get_search_scores(symbol_text, choices, template="<b>{0}</b>")
# Build the text that will appear on the list widget
results = []
lines = []
self.filtered_symbol_lines = []
for index, score in enumerate(scores):
text, rich_text, score_value = score
line, fold_level, token = line_fold_token[index]
lines.append(text)
if score_value != -1:
results.append((score_value, line, text, rich_text, fold_level,
icons[index], token))
template = '{0}{1}'
for (score, line, text, rich_text, fold_level, icon,
token) in sorted(results):
fold_space = ' ' * (fold_level)
line_number = line + 1
self.filtered_symbol_lines.append(line_number)
textline = template.format(fold_space, rich_text)
item = QListWidgetItem(icon, textline)
item.setSizeHint(QSize(0, 16))
self.list.addItem(item)
# To adjust the delegate layout for KDE themes
self.list.files_list = False
# Select edit line when using symbol search initially.
# See issue 5661
self.edit.setFocus()
# Move selected item in list accordingly
# NOTE: Doing this is causing two problems:
# 1. It makes the cursor to auto-jump to the last selected
# symbol after opening or closing a different file
# 2. It moves the cursor to the first symbol by default,
# which is very distracting.
# That's why this line is commented!
# self.set_current_row(0)
def setup(self):
"""Setup list widget content."""
if len(self.plugins_tabs) == 0:
self.close()
return
self.list.clear()
current_path = self.current_path
filter_text = self.filter_text
# Get optional line or symbol to define mode and method handler
trying_for_symbol = ('@' in self.filter_text)
if trying_for_symbol:
self.mode = self.SYMBOL_MODE
self.setup_symbol_list(filter_text, current_path)
else:
self.mode = self.FILE_MODE
self.setup_file_list(filter_text, current_path)
# Set position according to size
self.set_dialog_position()
def show(self):
"""
Override Qt method to force an update of the fileswitcher before
showing it. See Issue #5317 and PR #5389.
"""
self.setup()
super(FileSwitcher, self).show()
def add_plugin(self, plugin, tabs, data, icon):
"""Add a plugin to display its files."""
self.plugins_tabs.append((tabs, plugin))
self.plugins_data.append((data, icon))
self.plugins_instances.append(plugin)
class EditableList(QWidget):
"""
Editable list with label, add, delete and edit buttons.
"""
sig_item_edited = Signal(object)
sig_item_removed = Signal(object)
sig_item_selected = Signal()
def __init__(self,
title=None,
items_text=[],
duplicates=False,
normalize=True,
min_items=1,
confirm_remove=True,
regex=None,
tooltip=None):
super(EditableList, self).__init__()
self.duplicates = duplicates
self.items_text = items_text
self.normalize = normalize
self.min_items = min_items
self.confirm_remove = confirm_remove
# Widgets
self.label_title = QLabel(title)
self.button_add = QPushButton(qta.icon('fa.plus'), '')
self.button_remove = QPushButton(qta.icon('fa.minus'), '')
self.button_edit = QPushButton(qta.icon('fa.edit'), '')
self.list = QListWidget()
self.delegate = EditableListDelegate(regex=regex, tooltip=tooltip)
# Widget setup
self.list.setItemDelegate(self.delegate)
self.setMaximumHeight(self._height() * 4)
# Layout
label_buttons_layout = QHBoxLayout()
label_buttons_layout.addWidget(self.label_title, 0)
label_buttons_layout.addStretch()
label_buttons_layout.addWidget(self.button_add)
label_buttons_layout.addWidget(self.button_remove)
label_buttons_layout.addWidget(self.button_edit)
layout = QVBoxLayout()
layout.addLayout(label_buttons_layout)
layout.addWidget(self.list)
self.setLayout(layout)
# Signals
self.button_add.clicked.connect(self.add)
self.button_edit.clicked.connect(self.edit)
self.button_remove.clicked.connect(self.remove)
self.delegate.closeEditor.connect(self.check_value)
self.list.currentItemChanged.connect(self.refresh)
self.list.itemSelectionChanged.connect(self.sig_item_selected)
# Setup
self.setup()
# Expose list methods
self.clear = self.list.clear
self.currentItem = self.list.currentItem
self.setCurrentRow = self.list.setCurrentRow
self.currentRow = self.list.currentRow
self.item = self.list.item
self.count = self.list.count
def _height(self):
"""
Get the height for the row in the widget based on OS font metrics.
"""
return self.fontMetrics().height() * 2
def setup(self):
"""
Initial setup for populating items if any.
"""
# TODO: Check against regex and raise error accordingly!
new_items = []
for text in self.items_text:
if self.normalize:
text = text.lower()
new_items.append(text)
self.items_text = new_items
if not self.duplicates:
if len(set(self.items_text)) != len(self.items_text):
raise Exception('The list cannot contains duplicates.')
for item in self.items_text:
item = QListWidgetItem(item)
item.extra_data = None
item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable)
self.add(item)
item.setSizeHint(QSize(item.sizeHint().width(), self._height()))
self.refresh()
def get_texts(self):
"""
Returns the list of texts in the list, excluding the ones under
edition.
"""
row = self.list.currentRow()
texts = []
for i in range(self.list.count()):
item = self.list.item(i)
if item:
text = item.text().lower() if self.normalize else item.text()
texts.append(text)
# Check for duplicates. But the entered text already is part of the
# items, so that needs to be removed to make the check
if texts and row != -1:
texts.pop(row)
return texts
def add(self, item=None):
"""
Return the text of all items in the list, except the current one being
edited.
"""
if item:
if item.text() in self.get_texts() and not self.duplicates:
raise Exception
else:
self.list.addItem(item)
else:
item = QListWidgetItem()
item.extra_data = None
item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable
| Qt.ItemIsEditable)
self.list.addItem(item)
self.list.setCurrentItem(item)
item.setSizeHint(QSize(item.sizeHint().width(), self._height()))
self.edit()
self.refresh()
def remove(self):
"""
Remove item fron the list.
"""
row = self.list.currentRow()
item = self.list.currentItem()
if item is None:
self.refresh()
else:
text = item.text()
if self.confirm_remove:
message = ("Are you sure you want to remove<br>"
"<strong>{0}</strong>?".format(text))
reply = QMessageBox.question(self, 'Remove item', message,
QMessageBox.Yes, QMessageBox.No)
remove_item = reply == QMessageBox.Yes
else:
remove_item = True
if row != -1 and remove_item:
item = self.list.takeItem(row)
self.sig_item_removed.emit(item)
self.refresh()
def edit(self):
"""
Start editing item from the list.
"""
self.button_remove.setDisabled(True)
self.button_add.setDisabled(True)
self.button_edit.setDisabled(True)
item = self.current_item()
if item:
item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable
| Qt.ItemIsEditable)
item._text = item.text()
self.list.editItem(item)
def current_item(self):
"""
Return the current selected item.
"""
item = None
row = self.list.currentRow()
if row != -1:
item = self.list.item(row)
return item
def check_value(self):
"""
After editing an item check the value is valid and return to edit mode
if it does not pass, or accept the value and add it.
"""
texts = self.get_texts()
item = self.current_item()
self._temp_item = item
if item:
text = item.text().lower() if self.normalize else item.text()
row = self.list.currentRow()
if text.strip() == '':
self.list.takeItem(row)
if text.strip() in texts and not self.duplicates:
self.edit()
else:
self.sig_item_edited.emit(item)
item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable)
def refresh(self):
"""
Refresh the enabled status of the actions buttons.
"""
current_row = self.list.currentRow()
if self.list.count() == 0:
self.button_edit.setDisabled(True)
self.button_remove.setDisabled(True)
elif self.list.count() != 0 and current_row == -1:
self.button_edit.setDisabled(True)
self.button_remove.setDisabled(True)
elif self.list.count() == self.min_items:
self.button_add.setDisabled(False)
self.button_edit.setDisabled(False)
self.button_remove.setDisabled(True)
elif self.list.count() != 0 and current_row != -1:
self.button_add.setDisabled(False)
self.button_edit.setDisabled(False)
self.button_remove.setDisabled(False)
for i in range(self.list.count()):
item = self.list.item(i)
item.setSizeHint(QSize(item.sizeHint().width(), self._height()))
