Python QCompleter.complete方法代码示例

# 需要导入模块: from PySide.QtGui import QCompleter [as 别名]
# 或者: from PySide.QtGui.QCompleter import complete [as 别名]
class CommandBox(QtGui.QPlainTextEdit, object):
    newCommand = QtCore.Signal(str)

    def reset_history(self):
        self.history_index = len(self.history)

    def __init__(self, history, commands):
        self.history_index = 0
        self.history = history
        self.reset_history()
        super(CommandBox, self).__init__()

        #Autocompleter
        self.completer = QCompleter([BOT_PREFIX + name for name in commands], self)
        self.completer.setCaseSensitivity(Qt.CaseInsensitive)
        self.completer.setWidget(self)
        self.completer.activated.connect(self.onAutoComplete)
        self.autocompleteStart = None

    def onAutoComplete(self, text):
        #Select the text from autocompleteStart until the current cursor
        cursor = self.textCursor()
        cursor.setPosition(0, cursor.KeepAnchor)
        #Replace it with the selected text
        cursor.insertText(text)
        self.autocompleteStart = None

    #noinspection PyStringFormat
    def keyPressEvent(self, *args, **kwargs):
        event = args[0]
        key = event.key()
        ctrl = event.modifiers() == QtCore.Qt.ControlModifier

        # don't disturb the completer behavior
        if self.completer.popup().isVisible() and key in (Qt.Key_Enter, Qt.Key_Return, Qt.Key_Tab, Qt.Key_Backtab):
            event.ignore()
            return

        if self.autocompleteStart is not None and not event.text().isalnum() and \
                not (key == Qt.Key_Backspace and self.textCursor().position() > self.autocompleteStart):
            self.completer.popup().hide()
            self.autocompleteStart = None

        if key == Qt.Key_Space and ctrl:
            #Pop-up the autocompleteList
            rect = self.cursorRect(self.textCursor())
            rect.setSize(QtCore.QSize(100, 150))
            self.autocompleteStart = self.textCursor().position()
            self.completer.complete(rect)  # The popup is positioned in the next if block

        if self.autocompleteStart:
            prefix = self.toPlainText()
            cur = self.textCursor()
            cur.setPosition(self.autocompleteStart)

            self.completer.setCompletionPrefix(prefix)
            #Select the first one of the matches
            self.completer.popup().setCurrentIndex(self.completer.completionModel().index(0, 0))

        if key == Qt.Key_Up and ctrl:
            if self.history_index > 0:
                self.history_index -= 1
                self.setPlainText(BOT_PREFIX + '%s %s' % self.history[self.history_index])
                key.ignore()
                return
        elif key == Qt.Key_Down and ctrl:
            if self.history_index < len(self.history) - 1:
                self.history_index += 1
                self.setPlainText(BOT_PREFIX + '%s %s' % self.history[self.history_index])
                key.ignore()
                return
        elif key == QtCore.Qt.Key_Return and ctrl:
            self.newCommand.emit(self.toPlainText())
            self.reset_history()
        super(CommandBox, self).keyPressEvent(*args, **kwargs)

# 需要导入模块: from PySide.QtGui import QCompleter [as 别名]
# 或者: from PySide.QtGui.QCompleter import complete [as 别名]
class EditorCodeCompletion(QTextEdit):
    def __init__(self, path_dict):
        super(EditorCodeCompletion, self).__init__()  
        self.m_completer = QCompleter(self)
        self.m_completer.setWidget(self)
        words = []
        
        self.flag_open_angle_bracket = False
        self.tag_name = ""
        
        try:
            f = open(path_dict,"r")
            for word in f:
                words.append(word.strip())
            f.close()
        except IOError:
            print ("dictionary not in anticipated location")
       
        model = QStringListModel(words, self.m_completer)
        
        self.m_completer.setModel(model)
        self.m_completer.setCompletionMode(QCompleter.PopupCompletion)
        self.m_completer.activated.connect(self.insertCompletion)

    def insertCompletion (self, completion):
        cursor = self.textCursor()
        cursor.beginEditBlock()
        cursor.movePosition(QTextCursor.Left)
        cursor.movePosition(QTextCursor.EndOfWord)
        extra = len(self.m_completer.completionPrefix())
        cursor.insertText(completion[extra:])
        self.setTextCursor(cursor)
        cursor.endEditBlock()

    def __insertTag(self):
        '''
        inserts the corresponding closing tag to an opening xml tag
        '''
        self.find('<', QTextDocument.FindBackward)
        tc = self.textCursor()        
        tc.select(QTextCursor.WordUnderCursor)
        txt = '' if self.__stringHasBracket(tc.selectedText().replace(' ', '')) else tc.selectedText()
        txt = '</' + txt + '>'
        
        self.find('>')    
        tc = self.textCursor()
        tc.clearSelection()
        
        tc.insertText(txt) 
        tc.movePosition(QTextCursor.Left, QTextCursor.MoveAnchor, len(txt))
        self.setTextCursor(tc)
    
    def __stringHasBracket(self, s):
        return '<' in s or '>' in s

    def __insertClosingTag(self, event):
        operation_sys = sys.platform 
        flag = "linux" in operation_sys        
        if flag :
            self.__insertClosingTag_Unix(event)
        else:
            self.__insertClosingTag_Win(event)
        
    def __insertClosingTag_Unix(self, event):
        '''
        inserts a closing tag after the closing bracket of open tag
        @param key: keyboard input value as int
        '''
        if self.flag_open_angle_bracket :
            if event.key() == 47 : # /
                print ("/")
                self.flag_open_angle_bracket = False 
            elif event.key() == 62  :  # >
                print (">")
                self.__insertTag()
                self.flag_open_angle_bracket = False  
        elif event.key() == 60  :  # <
            print ("<")
            self.flag_open_angle_bracket = True
 
    def __insertClosingTag_Win(self, event) :
        if self.flag_open_angle_bracket :
            if event.modifiers() & Qt.ShiftModifier :
                if event.key() == 55 : # /
                    print ("/")
                    self.flag_open_angle_bracket = False             
                elif event.key() == 60 : # > 
                    print (">")
                    self.__insertTag()
                    self.flag_open_angle_bracket = False  
        elif event.key() == 60  :  # <
            print ("<")
            self.flag_open_angle_bracket = True    
 
    def keyPressEvent(self, event):
        '''
        checks keyboard input to set closing tag or start code completion 
        '''        
        if self.m_completer.popup().isVisible() :
            if event.key() == Qt.Key_Enter or event.key() == Qt.Key_Return or event.key() == Qt.Key_Tab or event.key() == Qt.Key_Escape :
#.........这里部分代码省略.........