Plugins/VcsPlugins/vcsMercurial/QueuesExtension/HgQueuesHeaderDialog.py

Wed, 02 Jan 2013 10:31:48 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Wed, 02 Jan 2013 10:31:48 +0100
changeset 2302
f29e9405c851
parent 1877
d8c5d6b04967
child 2525
8b507a9a2d40
child 2771
281c9b30dd91
child 3163
9f50365a0870
permissions
-rw-r--r--

Updated copyright for 2013.

# -*- coding: utf-8 -*-

# Copyright (c) 2011 - 2013 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing a dialog to show the commit message of the current patch.
"""

import os

from PyQt4.QtCore import QProcess, QTimer, Qt, QCoreApplication
from PyQt4.QtGui import QDialog, QDialogButtonBox

from E5Gui import E5MessageBox

from .Ui_HgQueuesHeaderDialog import Ui_HgQueuesHeaderDialog

import Preferences


class HgQueuesHeaderDialog(QDialog, Ui_HgQueuesHeaderDialog):
    """
    Class implementing a dialog to show the commit message of the current patch.
    """
    def __init__(self, vcs, parent=None):
        """
        Constructor
        
        @param vcs reference to the vcs object
        @param parent reference to the parent widget (QWidget)
        """
        super().__init__(parent)
        self.setupUi(self)
        
        self.buttonBox.button(QDialogButtonBox.Close).setEnabled(False)
        self.buttonBox.button(QDialogButtonBox.Cancel).setDefault(True)
        
        self.process = QProcess()
        self.vcs = vcs
        self.__hgClient = vcs.getClient()
        
        self.process.finished.connect(self.__procFinished)
        self.process.readyReadStandardOutput.connect(self.__readStdout)
        self.process.readyReadStandardError.connect(self.__readStderr)
        
        self.show()
        QCoreApplication.processEvents()
    
    def closeEvent(self, e):
        """
        Private slot implementing a close event handler.
        
        @param e close event (QCloseEvent)
        """
        if self.__hgClient:
            if self.__hgClient.isExecuting():
                self.__hgClient.cancel()
        else:
            if self.process is not None and \
               self.process.state() != QProcess.NotRunning:
                self.process.terminate()
                QTimer.singleShot(2000, self.process.kill)
                self.process.waitForFinished(3000)
        
        e.accept()
    
    def start(self, path):
        """
        Public slot to start the list command.
        
        @param path name of directory to be listed (string)
        """
        self.activateWindow()
        
        dname, fname = self.vcs.splitPath(path)
        
        # find the root of the repo
        repodir = dname
        while not os.path.isdir(os.path.join(repodir, self.vcs.adminDir)):
            repodir = os.path.dirname(repodir)
            if os.path.splitdrive(repodir)[1] == os.sep:
                return
        
        args = []
        args.append('qheader')
        
        if self.__hgClient:
            self.inputGroup.setEnabled(False)
            self.inputGroup.hide()
            
            out, err = self.__hgClient.runcommand(args,
                output=self.__showOutput, error=self.__showError)
            if err:
                self.__showError(err)
            if out:
                self.__showOutPut(out)
            self.__finish()
        else:
            self.process.kill()
            self.process.setWorkingDirectory(repodir)
            
            self.process.start('hg', args)
            procStarted = self.process.waitForStarted()
            if not procStarted:
                E5MessageBox.critical(self,
                    self.trUtf8('Process Generation Error'),
                    self.trUtf8(
                        'The process {0} could not be started. '
                        'Ensure, that it is in the search path.'
                    ).format('hg'))
    
    def __finish(self):
        """
        Private slot called when the process finished or the user pressed the button.
        """
        if self.process is not None and \
           self.process.state() != QProcess.NotRunning:
            self.process.terminate()
            QTimer.singleShot(2000, self.process.kill)
            self.process.waitForFinished(3000)
        
        self.buttonBox.button(QDialogButtonBox.Close).setEnabled(True)
        self.buttonBox.button(QDialogButtonBox.Cancel).setEnabled(False)
        self.buttonBox.button(QDialogButtonBox.Close).setDefault(True)
        self.buttonBox.button(QDialogButtonBox.Close).setFocus(Qt.OtherFocusReason)
        
        self.process = None
    
    def on_buttonBox_clicked(self, button):
        """
        Private slot called by a button of the button box clicked.
        
        @param button button that was clicked (QAbstractButton)
        """
        if button == self.buttonBox.button(QDialogButtonBox.Close):
            self.close()
        elif button == self.buttonBox.button(QDialogButtonBox.Cancel):
            if self.__hgClient:
                self.__hgClient.cancel()
            else:
                self.__finish()
    
    def __procFinished(self, exitCode, exitStatus):
        """
        Private slot connected to the finished signal.
        
        @param exitCode exit code of the process (integer)
        @param exitStatus exit status of the process (QProcess.ExitStatus)
        """
        self.__finish()
    
    def __readStdout(self):
        """
        Private slot to handle the readyReadStdout signal.
        
        It reads the output of the process, formats it and inserts it into
        the contents pane.
        """
        if self.process is not None:
            s = str(self.process.readAllStandardOutput(),
                    Preferences.getSystem("IOEncoding"),
                    'replace')
            self.__showOutput(s)
    
    def __showOutput(self, out):
        """
        Private slot to show some output.
        
        @param out output to be shown (string)
        """
        self.messageEdit.appendPlainText(out)
    
    def __readStderr(self):
        """
        Private slot to handle the readyReadStderr signal.
        
        It reads the error output of the process and inserts it into the
        error pane.
        """
        if self.process is not None:
            s = str(self.process.readAllStandardError(),
                    Preferences.getSystem("IOEncoding"),
                    'replace')
            self.__showError(s)
    
    def __showError(self, out):
        """
        Private slot to show some error.
        
        @param out error to be shown (string)
        """
        self.messageEdit.appendPlainText(self.trUtf8("Error: "))
        self.messageEdit.appendPlainText(out)

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