# -*- coding: utf-8 -*-
#
# This file is part of NINJA-IDE (http://ninja-ide.org).
#
# NINJA-IDE is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# any later version.
#
# NINJA-IDE is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with NINJA-IDE; If not, see <http://www.gnu.org/licenses/>.
from __future__ import unicode_literals
from PyQt4.QtGui import QApplication
from PyQt4.QtGui import QTextCursor
from PyQt4.QtGui import QFrame
from PyQt4.QtGui import QCompleter
from PyQt4.QtGui import QStackedLayout
from PyQt4.QtGui import QListWidgetItem
from PyQt4.QtGui import QIcon
from PyQt4.QtCore import Qt
from PyQt4.QtCore import SIGNAL
from PyQt4.QtGui import QListWidget
from ninja_ide import resources
from ninja_ide.core import settings
from ninja_ide.tools.completion import code_completion
class CodeCompletionWidget(QFrame):
def __init__(self, editor):
super(CodeCompletionWidget, self).__init__(
None, Qt.FramelessWindowHint | Qt.ToolTip)
self._editor = editor
self._revision = 0
self._block = 0
self.stack_layout = QStackedLayout(self)
self.stack_layout.setContentsMargins(0, 0, 0, 0)
self.stack_layout.setSpacing(0)
self.completion_list = QListWidget()
self.completion_list.setMinimumHeight(200)
self.completion_list.setAlternatingRowColors(True)
self._list_index = self.stack_layout.addWidget(self.completion_list)
self._icons = {'a': resources.IMAGES['attribute'],
'f': resources.IMAGES['function'],
'c': resources.IMAGES['class'],
'm': resources.IMAGES['module']}
self.cc = code_completion.CodeCompletion()
self._completion_results = {}
self._prefix = ''
self.setVisible(False)
self.source = ''
self._key_operations = {
Qt.Key_Up: self._select_previous_row,
Qt.Key_Down: self._select_next_row,
Qt.Key_PageUp: (lambda: self._select_previous_row(6)),
Qt.Key_PageDown: (lambda: self._select_next_row(6)),
Qt.Key_Right: lambda: None,
Qt.Key_Left: lambda: None,
Qt.Key_Enter: self.pre_key_insert_completion,
Qt.Key_Return: self.pre_key_insert_completion,
Qt.Key_Tab: self.pre_key_insert_completion,
Qt.Key_Space: self.hide_completer,
Qt.Key_Escape: self.hide_completer,
Qt.Key_Backtab: self.hide_completer,
Qt.NoModifier: self.hide_completer,
Qt.ShiftModifier: self.hide_completer,
}
self.desktop = QApplication.instance().desktop()
self.connect(self.completion_list,
SIGNAL("itemClicked(QListWidgetItem*)"),
self.pre_key_insert_completion)
self.connect(self._editor.document(),
SIGNAL("cursorPositionChanged(QTextCursor)"),
self.update_metadata)
def _select_next_row(self, move=1):
new_row = self.completion_list.currentRow() + move
if new_row < self.completion_list.count():
self.completion_list.setCurrentRow(new_row)
else:
self.completion_list.setCurrentRow(0)
return True
def _select_previous_row(self, move=1):
new_row = self.completion_list.currentRow() - move
if new_row >= 0:
self.completion_list.setCurrentRow(new_row)
else:
self.completion_list.setCurrentRow(
self.completion_list.count() - move)
return True
def update_metadata(self, cursor):
if settings.CODE_COMPLETION:
if self._editor.document().revision() != self._revision and \
cursor.block().blockNumber() != self._block:
source = self._editor.get_text()
source = source.encode(self._editor.encoding)
self.cc.analyze_file(self._editor.ID, source,
self._editor.indent, self._editor.useTabs)
self._revision = self._editor.document().revision()
self._block = cursor.block().blockNumber()
def insert_completion(self, insert, type_=ord('a')):
if insert != self._prefix:
closing = ''
if type_ in (ord('f'), ord('c')):
closing = '()'
extra = len(self._prefix) - len(insert)
insertion = '%s%s' % (insert[extra:], closing)
self._editor.textCursor().insertText(insertion)
self.hide_completer()
def _get_geometry(self):
cr = self._editor.cursorRect()
desktop_geometry = self.desktop.availableGeometry(self._editor)
point = self._editor.mapToGlobal(cr.topLeft())
cr.moveTopLeft(point)
#Check new position according desktop geometry
width = (self.completion_list.sizeHintForColumn(0) +
self.completion_list.verticalScrollBar().sizeHint().width() + 10)
height = 200
orientation = (point.y() + height) < desktop_geometry.height()
if orientation:
cr.moveTop(cr.bottom())
cr.setWidth(width)
cr.setHeight(height)
if not orientation:
cr.moveBottom(cr.top())
xpos = desktop_geometry.width() - (point.x() + width)
if xpos < 0:
cr.moveLeft(cr.left() + xpos)
return cr
def complete(self, results):
self.add_list_items(results)
self.completion_list.setCurrentRow(0)
cr = self._get_geometry()
self.setGeometry(cr)
self.completion_list.updateGeometries()
self.show()
def add_list_items(self, proposals):
self.completion_list.clear()
for p in proposals:
self.completion_list.addItem(
QListWidgetItem(
QIcon(self._icons.get(p[0], resources.IMAGES['attribute'])),
p[1], type=ord(p[0])))
def set_completion_prefix(self, prefix, valid=True):
self._prefix = prefix
proposals = []
proposals += [('m', item)
for item in self._completion_results.get('modules', [])
if item.startswith(prefix)]
proposals += [('c', item)
for item in self._completion_results.get('classes', [])
if item.startswith(prefix)]
proposals += [('a', item)
for item in self._completion_results.get('attributes', [])
if item.startswith(prefix)]
proposals += [('f', item)
for item in self._completion_results.get('functions', [])
if item.startswith(prefix)]
if proposals and valid:
self.complete(proposals)
else:
self.hide_completer()
def _invalid_completion_position(self):
result = False
cursor = self._editor.textCursor()
cursor.movePosition(QTextCursor.StartOfLine,
QTextCursor.KeepAnchor)
selection = cursor.selectedText()[:-1].split(' ')
if len(selection) == 0 or selection[-1] == '' or \
selection[-1].isdigit():
result = True
return result
def fill_completer(self, force_completion=False):
if not force_completion and (self._editor.cursor_inside_string() or
self._editor.cursor_inside_comment() or
self._invalid_completion_position()):
return
source = self._editor.get_text()
source = source.encode(self._editor.encoding)
offset = self._editor.textCursor().position()
results = self.cc.get_completion(source, offset)
self._completion_results = results
if force_completion:
cursor = self._editor.textCursor()
cursor.movePosition(QTextCursor.StartOfWord,
QTextCursor.KeepAnchor)
prefix = cursor.selectedText()
else:
prefix = self._editor._text_under_cursor()
self.set_completion_prefix(prefix)
def hide_completer(self):
self._prefix = ''
self.hide()
def pre_key_insert_completion(self):
type_ = ord('a')
current = self.completion_list.currentItem()
insert = current.text()
if not insert.endswith(')'):
type_ = current.type()
self.insert_completion(insert, type_)
self.hide_completer()
return True
def process_pre_key_event(self, event):
if not self.isVisible() or self._editor.lang != "python":
return False
skip = self._key_operations.get(event.key(), lambda: False)()
self._key_operations.get(event.modifiers(), lambda: False)()
if skip is None:
skip = False
return skip
def process_post_key_event(self, event):
if not settings.CODE_COMPLETION or self._editor.lang != "python":
return
if self.isVisible():
source = self._editor.get_text()
source = source.encode(self._editor.encoding)
offset = self._editor.textCursor().position()
prefix, valid = self.cc.get_prefix(source, offset)
self.set_completion_prefix(prefix, valid)
self.completion_list.setCurrentRow(0)
force_completion = (event.key() == Qt.Key_Space and
event.modifiers() == Qt.ControlModifier)
if event.key() == Qt.Key_Period or force_completion:
self.fill_completer(force_completion)
class CompleterWidget(QCompleter):
def __init__(self, editor):
QCompleter.__init__(self, [], editor)
self._editor = editor
self.setWidget(editor)
self.setCompletionMode(QCompleter.PopupCompletion)
self.setCaseSensitivity(Qt.CaseInsensitive)
self.cc = code_completion.CodeCompletion()
self.completion_results = {}
self.connect(self, SIGNAL("activated(const QString&)"),
self.insert_completion)
def insert_completion(self, insert):
self.widget().textCursor().insertText(
insert[len(self.completionPrefix()):])
self.popup().hide()
def complete(self, cr, results):
proposals = []
proposals += results.get('modules', [])
proposals += results.get('classes', [])
proposals += results.get('attributes', [])
proposals += results.get('functions', [])
self.model().setStringList(proposals)
self.popup().setCurrentIndex(self.model().index(0, 0))
cr.setWidth(self.popup().sizeHintForColumn(0)
+ self.popup().verticalScrollBar().sizeHint().width() + 10)
QCompleter.complete(self, cr)
def is_visible(self):
return self.popup().isVisible()
def process_pre_key_event(self, event):
skip = False
if event.key() in (Qt.Key_Enter, Qt.Key_Return, Qt.Key_Tab):
event.ignore()
self.popup().hide()
skip = True
elif event.key() in (Qt.Key_Space, Qt.Key_Escape, Qt.Key_Backtab):
self.popup().hide()
return skip
def process_post_key_event(self, event):
if self.popup().isVisible():
prefix = self._editor._text_under_cursor()
self.setCompletionPrefix(prefix)
self.popup().setCurrentIndex(
self.completionModel().index(0, 0))
self.setCurrentRow(0)
if event.key() == Qt.Key_Period or (event.key() == Qt.Key_Space and
event.modifiers() == Qt.ControlModifier):
self.fill_completer()
def fill_completer(self):
source = self._editor.get_text()
source = source.encode(self._editor.encoding)
# self.cc.analyze_file('', source)
offset = self._editor.textCursor().position()
results = self.cc.get_completion(source, offset)
results.sort()
self.completion_results = results
cr = self._editor.cursorRect()
self.complete(cr, results)