def collapse_all(self):
"""
Collapses all triggers and makes all blocks with fold level > 0
invisible.
"""
self._clear_block_deco()
block = self.editor.document().firstBlock()
last = self.editor.document().lastBlock()
while block.isValid():
lvl = TextBlockHelper.get_fold_lvl(block)
trigger = TextBlockHelper.is_fold_trigger(block)
if trigger:
if lvl == 0:
self._show_previous_blank_lines(block)
TextBlockHelper.set_collapsed(block, True)
block.setVisible(lvl == 0)
if block == last and block.text().strip() == '':
block.setVisible(True)
self._show_previous_blank_lines(block)
block = block.next()
self._refresh_editor_and_scrollbars()
tc = self.editor.textCursor()
tc.movePosition(tc.Start)
self.editor.setTextCursor(tc)
self.collapse_all_triggered.emit()
def fold(self):
"""Folds the region."""
start, end = self.get_range()
TextBlockHelper.set_collapsed(self._trigger, True)
block = self._trigger.next()
while block.blockNumber() <= end and block.isValid():
block.setVisible(False)
block = block.next()
def fold(self):
"""Folds the region."""
start, end = self.get_range()
TextBlockHelper.set_collapsed(self._trigger, True)
block = self._trigger.next()
while block.blockNumber() <= end and block.isValid():
block.setVisible(False)
block = block.next()
def unfold(self):
"""Unfolds the region."""
# set all direct child blocks which are not triggers to be visible
self._trigger.setVisible(True)
TextBlockHelper.set_collapsed(self._trigger, False)
for block in self.blocks(ignore_blank_lines=False):
block.setVisible(True)
if TextBlockHelper.is_fold_trigger(block):
TextBlockHelper.set_collapsed(block, False)
def unfold(self):
"""Unfolds the region."""
# set all direct child blocks which are not triggers to be visible
self._trigger.setVisible(True)
TextBlockHelper.set_collapsed(self._trigger, False)
for block in self.blocks(ignore_blank_lines=False):
block.setVisible(True)
if TextBlockHelper.is_fold_trigger(block):
TextBlockHelper.set_collapsed(block, False)
def process_block(self, current_block, previous_block, text):
"""
Processes a block and setup its folding info.
This method call ``detect_fold_level`` and handles most of the tricky
corner cases so that all you have to do is focus on getting the proper
fold level foreach meaningful block, skipping the blank ones.
:param current_block: current block to process
:param previous_block: previous block
:param text: current block text
"""
prev_fold_level = TextBlockHelper.get_fold_lvl(previous_block)
if text.strip() == '' or self.editor.is_comment(current_block):
# blank or comment line always have the same level
# as the previous line
fold_level = prev_fold_level
else:
fold_level = self.detect_fold_level(
previous_block, current_block)
if fold_level > self.limit:
fold_level = self.limit
prev_fold_level = TextBlockHelper.get_fold_lvl(previous_block)
if fold_level > prev_fold_level:
# apply on previous blank or comment lines
block = current_block.previous()
while block.isValid() and (block.text().strip() == ''
or self.editor.is_comment(block)):
TextBlockHelper.set_fold_lvl(block, fold_level)
block = block.previous()
TextBlockHelper.set_fold_trigger(
block, True)
# update block fold level
if text.strip() and not self.editor.is_comment(previous_block):
TextBlockHelper.set_fold_trigger(
previous_block, fold_level > prev_fold_level)
TextBlockHelper.set_fold_lvl(current_block, fold_level)
# user pressed enter at the beginning of a fold trigger line
# the previous blank or comment line will keep the trigger state
# and the new line (which actually contains the trigger) must use
# the prev state (and prev state must then be reset).
prev = current_block.previous() # real prev block (may be blank)
if (prev and prev.isValid() and
(prev.text().strip() == '' or self.editor.is_comment(prev)) and
TextBlockHelper.is_fold_trigger(prev)):
# prev line has the correct trigger fold state
TextBlockHelper.set_collapsed(
current_block, TextBlockHelper.is_collapsed(
prev))
# make empty or comment line not a trigger
TextBlockHelper.set_fold_trigger(prev, False)
TextBlockHelper.set_collapsed(prev, False)
def expand_all(self):
"""Expands all fold triggers."""
block = self.editor.document().firstBlock()
while block.isValid():
TextBlockHelper.set_collapsed(block, False)
block.setVisible(True)
block = block.next()
self._clear_block_deco()
self._refresh_editor_and_scrollbars()
self.expand_all_triggered.emit()
