def test_get_selection_for_non_empty_selection(self):
widget = CodeEditor(TEST_LANG)
widget.setText("""first line
second line
third line
fourth line
""")
selected = (0, 2, 3, 4)
widget.setSelection(*selected)
res = widget.getSelection()
self.assertEqual(selected, res)
def test_get_selection_for_non_empty_selection(self):
widget = CodeEditor(TEST_LANG)
widget.setText("""first line
second line
third line
fourth line
""")
selected = (0, 2, 3, 4)
widget.setSelection(*selected)
res = widget.getSelection()
self.assertEqual(selected, res)
def test_get_selection_for_empty_selection(self):
widget = CodeEditor(TEST_LANG)
res = widget.getSelection()
self.assertEqual((-1, -1, -1, -1), res)
def test_get_selection_for_empty_selection(self):
widget = CodeEditor(TEST_LANG)
res = widget.getSelection()
self.assertEqual((-1, -1, -1, -1), res)
class PythonFileInterpreter(QWidget):
sig_editor_modified = Signal(bool)
sig_filename_modified = Signal(str)
def __init__(self, content=None, filename=None, parent=None):
"""
:param content: An optional string of content to pass to the editor
:param filename: The file path where the content was read.
:param parent: An optional parent QWidget
"""
super(PythonFileInterpreter, self).__init__(parent)
# layout
self.editor = CodeEditor("AlternateCSPythonLexer", self)
# Clear QsciScintilla key bindings that may override PyQt's bindings
self.clear_key_binding("Ctrl+/")
self.status = QStatusBar(self)
self.layout = QVBoxLayout()
self.layout.addWidget(self.editor)
self.layout.addWidget(self.status)
self.setLayout(self.layout)
self.layout.setContentsMargins(0, 0, 0, 0)
self._setup_editor(content, filename)
self.setAttribute(Qt.WA_DeleteOnClose, True)
self._presenter = PythonFileInterpreterPresenter(
self, PythonCodeExecution(content))
self.editor.modificationChanged.connect(self.sig_editor_modified)
self.editor.fileNameChanged.connect(self.sig_filename_modified)
self.find_replace_dialog = None
self.find_replace_dialog_shown = False
def closeEvent(self, event):
self.deleteLater()
if self.find_replace_dialog:
self.find_replace_dialog.close()
super(PythonFileInterpreter, self).closeEvent(event)
def show_find_replace_dialog(self):
if self.find_replace_dialog is None:
self.find_replace_dialog = EmbeddedFindReplaceDialog(
self, self.editor)
self.layout.insertWidget(0, self.find_replace_dialog.view)
self.find_replace_dialog.show()
def hide_find_replace_dialog(self):
if self.find_replace_dialog is not None:
self.find_replace_dialog.hide()
@property
def filename(self):
return self.editor.fileName()
def confirm_close(self):
"""Confirm the widget can be closed. If the editor contents are modified then
a user can interject and cancel closing.
:return: True if closing was considered successful, false otherwise
"""
return self.save(confirm=True)
def abort(self):
self._presenter.req_abort()
def execute_async(self):
self._presenter.req_execute_async()
def save(self, confirm=False):
if self.editor.isModified():
io = EditorIO(self.editor)
return io.save_if_required(confirm)
else:
return True
def set_editor_readonly(self, ro):
self.editor.setReadOnly(ro)
def set_status_message(self, msg):
self.status.showMessage(msg)
def replace_tabs_with_spaces(self):
self.replace_text(TAB_CHAR, SPACE_CHAR * TAB_WIDTH)
def replace_text(self, match_text, replace_text):
if self.editor.selectedText() == '':
self.editor.selectAll()
new_text = self.editor.selectedText().replace(match_text, replace_text)
self.editor.replaceSelectedText(new_text)
def replace_spaces_with_tabs(self):
self.replace_text(SPACE_CHAR * TAB_WIDTH, TAB_CHAR)
def set_whitespace_visible(self):
self.editor.setWhitespaceVisibility(CodeEditor.WsVisible)
def set_whitespace_invisible(self):
self.editor.setWhitespaceVisibility(CodeEditor.WsInvisible)
def clear_key_binding(self, key_str):
"""Clear a keyboard shortcut bound to a Scintilla command"""
self.editor.clearKeyBinding(key_str)
def toggle_comment(self):
if self.editor.selectedText() == '': # If nothing selected, do nothing
return
# Note selection indices to restore highlighting later
selection_idxs = list(self.editor.getSelection())
# Expand selection from first character on start line to end char on last line
line_end_pos = len(
self.editor.text().split('\n')[selection_idxs[2]].rstrip())
line_selection_idxs = [
selection_idxs[0], 0, selection_idxs[2], line_end_pos
]
self.editor.setSelection(*line_selection_idxs)
selected_lines = self.editor.selectedText().split('\n')
if self._are_comments(selected_lines) is True:
toggled_lines = self._uncomment_lines(selected_lines)
# Track deleted characters to keep highlighting consistent
selection_idxs[1] -= 2
selection_idxs[-1] -= 2
else:
toggled_lines = self._comment_lines(selected_lines)
selection_idxs[1] += 2
selection_idxs[-1] += 2
# Replace lines with commented/uncommented lines
self.editor.replaceSelectedText('\n'.join(toggled_lines))
# Restore highlighting
self.editor.setSelection(*selection_idxs)
def _comment_lines(self, lines):
for i in range(len(lines)):
lines[i] = '# ' + lines[i]
return lines
def _uncomment_lines(self, lines):
for i in range(len(lines)):
uncommented_line = lines[i].replace('# ', '', 1)
if uncommented_line == lines[i]:
uncommented_line = lines[i].replace('#', '', 1)
lines[i] = uncommented_line
return lines
def _are_comments(self, code_lines):
for line in code_lines:
if line.strip():
if not line.strip().startswith('#'):
return False
return True
def _setup_editor(self, default_content, filename):
editor = self.editor
# use tabs not spaces for indentation
editor.setIndentationsUseTabs(False)
editor.setTabWidth(TAB_WIDTH)
# show current editing line but in a softer color
editor.setCaretLineBackgroundColor(CURRENTLINE_BKGD_COLOR)
editor.setCaretLineVisible(True)
# set a margin large enough for sensible file sizes < 1000 lines
# and the progress marker
font_metrics = QFontMetrics(self.font())
editor.setMarginWidth(1, font_metrics.averageCharWidth() * 3 + 20)
# fill with content if supplied and set source filename
if default_content is not None:
editor.setText(default_content)
if filename is not None:
editor.setFileName(filename)
# Default content does not count as a modification
editor.setModified(False)
editor.enableAutoCompletion(CodeEditor.AcsAll)