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201 lines
6.6 KiB
Python
201 lines
6.6 KiB
Python
#!/usr/bin/env python
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#############################################################################
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##
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## Copyright (C) 2013 Riverbank Computing Limited.
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## Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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## All rights reserved.
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##
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## This file is part of the examples of PyQt.
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##
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## $QT_BEGIN_LICENSE:BSD$
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## You may use this file under the terms of the BSD license as follows:
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##
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## "Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following conditions are
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## met:
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## * Redistributions in binary form must reproduce the above copyright
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## notice, this list of conditions and the following disclaimer in
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## the documentation and/or other materials provided with the
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## distribution.
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## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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## the names of its contributors may be used to endorse or promote
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## products derived from this software without specific prior written
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## permission.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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## $QT_END_LICENSE$
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##
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#############################################################################
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from PyQt5.QtCore import pyqtSignal, pyqtSlot, Q_CLASSINFO
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from PyQt5.QtWidgets import QApplication, QDialog, QMainWindow, QMessageBox
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from PyQt5.QtDBus import (QDBusAbstractAdaptor, QDBusAbstractInterface,
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QDBusConnection, QDBusMessage)
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from ui_chatmainwindow import Ui_ChatMainWindow
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from ui_chatsetnickname import Ui_NicknameDialog
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class ChatAdaptor(QDBusAbstractAdaptor):
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Q_CLASSINFO("D-Bus Interface", 'org.example.chat')
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Q_CLASSINFO("D-Bus Introspection", ''
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' <interface name="org.example.chat">\n'
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' <signal name="message">\n'
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' <arg direction="out" type="s" name="nickname"/>\n'
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' <arg direction="out" type="s" name="text"/>\n'
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' </signal>\n'
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' <signal name="action">\n'
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' <arg direction="out" type="s" name="nickname"/>\n'
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' <arg direction="out" type="s" name="text"/>\n'
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' </signal>\n'
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' </interface>\n'
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'')
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action = pyqtSignal(str, str)
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message = pyqtSignal(str, str)
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def __init__(self, parent):
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super(ChatAdaptor, self).__init__(parent)
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self.setAutoRelaySignals(True)
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class ChatInterface(QDBusAbstractInterface):
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action = pyqtSignal(str, str)
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message = pyqtSignal(str, str)
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def __init__(self, service, path, connection, parent=None):
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super(ChatInterface, self).__init__(service, path, 'org.example.chat',
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connection, parent)
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class ChatMainWindow(QMainWindow, Ui_ChatMainWindow):
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action = pyqtSignal(str, str)
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message = pyqtSignal(str, str)
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def __init__(self):
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super(ChatMainWindow, self).__init__()
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self.m_nickname = "nickname"
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self.m_messages = []
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self.setupUi(self)
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self.sendButton.setEnabled(False)
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self.messageLineEdit.textChanged.connect(self.textChangedSlot)
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self.sendButton.clicked.connect(self.sendClickedSlot)
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self.actionChangeNickname.triggered.connect(self.changeNickname)
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self.actionAboutQt.triggered.connect(self.aboutQt)
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QApplication.instance().lastWindowClosed.connect(self.exiting)
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# Add our D-Bus interface and connect to D-Bus.
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ChatAdaptor(self)
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QDBusConnection.sessionBus().registerObject('/', self)
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iface = ChatInterface('', '', QDBusConnection.sessionBus(), self)
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QDBusConnection.sessionBus().connect('', '', 'org.example.chat',
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'message', self.messageSlot)
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iface.action.connect(self.actionSlot)
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dialog = NicknameDialog()
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dialog.cancelButton.setVisible(False)
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dialog.exec_()
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self.m_nickname = dialog.nickname.text().strip()
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self.action.emit(self.m_nickname, "joins the chat")
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def rebuildHistory(self):
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history = '\n'.join(self.m_messages)
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self.chatHistory.setPlainText(history)
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@pyqtSlot(str, str)
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def messageSlot(self, nickname, text):
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self.m_messages.append("<%s> %s" % (nickname, text))
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if len(self.m_messages) > 100:
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self.m_messages.pop(0)
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self.rebuildHistory()
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@pyqtSlot(str, str)
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def actionSlot(self, nickname, text):
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self.m_messages.append("* %s %s" % (nickname, text))
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if len(self.m_messages) > 100:
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self.m_messages.pop(0)
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self.rebuildHistory()
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@pyqtSlot(str)
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def textChangedSlot(self, newText):
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self.sendButton.setEnabled(newText != '')
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@pyqtSlot()
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def sendClickedSlot(self):
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msg = QDBusMessage.createSignal('/', 'org.example.chat', 'message')
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msg << self.m_nickname << self.messageLineEdit.text()
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QDBusConnection.sessionBus().send(msg)
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self.messageLineEdit.setText('')
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@pyqtSlot()
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def changeNickname(self):
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dialog = NicknameDialog(self)
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if dialog.exec_() == QDialog.Accepted:
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old = self.m_nickname
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self.m_nickname = dialog.nickname.text().strip()
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self.action.emit(old, "is now known as %s" % self.m_nickname)
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@pyqtSlot()
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def aboutQt(self):
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QMessageBox.aboutQt(self)
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@pyqtSlot()
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def exiting(self):
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self.action.emit(self.m_nickname, "leaves the chat")
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class NicknameDialog(QDialog, Ui_NicknameDialog):
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def __init__(self, parent=None):
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super(NicknameDialog, self).__init__(parent)
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self.setupUi(self)
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if __name__ == '__main__':
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import sys
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app = QApplication(sys.argv)
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if not QDBusConnection.sessionBus().isConnected():
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sys.stderr.write("Cannot connect to the D-Bus session bus.\n"
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"Please check your system settings and try again.\n")
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sys.exit(1)
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chat = ChatMainWindow()
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chat.show()
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sys.exit(app.exec_())
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