Plugins/VcsPlugins/vcsMercurial/HgDialog.py

changeset 178
dd9f0bca5e2f
child 189
17bb2db7a347
diff -r c822ccc4d138 -r dd9f0bca5e2f Plugins/VcsPlugins/vcsMercurial/HgDialog.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/VcsPlugins/vcsMercurial/HgDialog.py	Mon Apr 12 18:00:42 2010 +0000
@@ -0,0 +1,246 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2010 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a dialog starting a process and showing its output.
+"""
+
+import os
+
+from PyQt4.QtCore import QProcess, QTimer, SIGNAL, pyqtSlot
+from PyQt4.QtGui import QDialog, QDialogButtonBox, QMessageBox, QLineEdit
+
+from .Ui_HgDialog import Ui_HgDialog
+
+import Preferences
+
+class HgDialog(QDialog, Ui_HgDialog):
+    """
+    Class implementing a dialog starting a process and showing its output.
+    
+    It starts a QProcess and displays a dialog that
+    shows the output of the process. The dialog is modal,
+    which causes a synchronized execution of the process.
+    """
+    def __init__(self, text, parent = None):
+        """
+        Constructor
+        
+        @param text text to be shown by the label (string)
+        @param parent parent widget (QWidget)
+        """
+        QDialog.__init__(self, parent)
+        self.setupUi(self)
+        
+        self.buttonBox.button(QDialogButtonBox.Close).setEnabled(False)
+        self.buttonBox.button(QDialogButtonBox.Cancel).setDefault(True)
+        
+        self.proc = None
+        self.username = ''
+        self.password = ''
+        
+        self.outputGroup.setTitle(text)
+    
+    def __finish(self):
+        """
+        Private slot called when the process finished or the user pressed the button.
+        """
+        if self.proc is not None and \
+           self.proc.state() != QProcess.NotRunning:
+            self.proc.terminate()
+            QTimer.singleShot(2000, self.proc.kill)
+            self.proc.waitForFinished(3000)
+        
+        self.buttonBox.button(QDialogButtonBox.Close).setEnabled(True)
+        self.buttonBox.button(QDialogButtonBox.Cancel).setEnabled(False)
+        self.buttonBox.button(QDialogButtonBox.Close).setDefault(True)
+        
+        self.inputGroup.setEnabled(False)
+        self.inputGroup.hide()
+        
+        self.proc = None
+        
+        if Preferences.getVCS("AutoClose") and \
+           self.normal and \
+           self.errors.toPlainText() == "":
+            self.accept()
+        
+        if self.__updateCommand and self.normal:
+            # check, if we had additions or deletions
+            lastLine = self.resultbox.toPlainText().splitlines()[-1]
+            if lastLine:
+                adds, merges, deletes, conflicts = \
+                    [int(a.split()[0]) for a in lastLine.split(",")]
+                self.__hasAddOrDelete = adds > 0 or deletes > 0
+    
+    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):
+            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.normal = (exitStatus == QProcess.NormalExit) and (exitCode == 0)
+        self.__finish()
+    
+    def startProcess(self, args, workingDir = None):
+        """
+        Public slot used to start the process.
+        
+        @param args list of arguments for the process (list of strings)
+        @param workingDir working directory for the process (string)
+        @return flag indicating a successful start of the process
+        """
+        self.errorGroup.hide()
+        self.normal = False
+        self.intercept = False
+        
+        self.__hasAddOrDelete = False
+        self.__updateCommand = args[0] == "update"
+        
+        self.proc = QProcess()
+        
+        self.resultbox.append(' '.join(args))
+        self.resultbox.append('')
+        
+        self.connect(self.proc, SIGNAL('finished(int, QProcess::ExitStatus)'),
+            self.__procFinished)
+        self.connect(self.proc, SIGNAL('readyReadStandardOutput()'),
+            self.__readStdout)
+        self.connect(self.proc, SIGNAL('readyReadStandardError()'),
+            self.__readStderr)
+        
+        if workingDir:
+            self.proc.setWorkingDirectory(workingDir)
+        self.proc.start('hg', args)
+        procStarted = self.proc.waitForStarted()
+        if not procStarted:
+            self.buttonBox.setFocus()
+            self.inputGroup.setEnabled(False)
+            QMessageBox.critical(None,
+                self.trUtf8('Process Generation Error'),
+                self.trUtf8(
+                    'The process {0} could not be started. '
+                    'Ensure, that it is in the search path.'
+                ).format('hg'))
+        else:
+            self.inputGroup.setEnabled(True)
+            self.inputGroup.show()
+        return procStarted
+    
+    def normalExit(self):
+        """
+        Public method to check for a normal process termination.
+        
+        @return flag indicating normal process termination (boolean)
+        """
+        return self.normal
+    
+    def normalExitWithoutErrors(self):
+        """
+        Public method to check for a normal process termination without
+        error messages.
+        
+        @return flag indicating normal process termination (boolean)
+        """
+        return self.normal and self.errors.toPlainText() == ""
+    
+    def __readStdout(self):
+        """
+        Private slot to handle the readyReadStandardOutput signal. 
+        
+        It reads the output of the process, formats it and inserts it into
+        the contents pane.
+        """
+        if self.proc is not None:
+            s = str(self.proc.readAllStandardOutput(), 
+                    Preferences.getSystem("IOEncoding"), 
+                    'replace')
+            self.resultbox.insertPlainText(s)
+            self.resultbox.ensureCursorVisible()
+    
+    def __readStderr(self):
+        """
+        Private slot to handle the readyReadStandardError signal.
+        
+        It reads the error output of the process and inserts it into the
+        error pane.
+        """
+        if self.proc is not None:
+            self.errorGroup.show()
+            s = str(self.proc.readAllStandardError(), 
+                    Preferences.getSystem("IOEncoding"), 
+                    'replace')
+            self.errors.insertPlainText(s)
+            self.errors.ensureCursorVisible()
+    
+    def on_passwordCheckBox_toggled(self, isOn):
+        """
+        Private slot to handle the password checkbox toggled.
+        
+        @param isOn flag indicating the status of the check box (boolean)
+        """
+        if isOn:
+            self.input.setEchoMode(QLineEdit.Password)
+        else:
+            self.input.setEchoMode(QLineEdit.Normal)
+    
+    @pyqtSlot()
+    def on_sendButton_clicked(self):
+        """
+        Private slot to send the input to the subversion process.
+        """
+        input = self.input.text()
+        input += os.linesep
+        
+        if self.passwordCheckBox.isChecked():
+            self.errors.insertPlainText(os.linesep)
+            self.errors.ensureCursorVisible()
+        else:
+            self.errors.insertPlainText(input)
+            self.errors.ensureCursorVisible()
+        
+        self.proc.write(input)
+        
+        self.passwordCheckBox.setChecked(False)
+        self.input.clear()
+    
+    def on_input_returnPressed(self):
+        """
+        Private slot to handle the press of the return key in the input field.
+        """
+        self.intercept = True
+        self.on_sendButton_clicked()
+    
+    def keyPressEvent(self, evt):
+        """
+        Protected slot to handle a key press event.
+        
+        @param evt the key press event (QKeyEvent)
+        """
+        if self.intercept:
+            self.intercept = False
+            evt.accept()
+            return
+        QDialog.keyPressEvent(self, evt)
+    
+    def hasAddOrDelete(self):
+        """
+        Public method to check, if the last action contained an add or delete.
+        
+        @return flag indicating the presence of an add or delete (boolean)
+        """
+        return self.__hasAddOrDelete

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mercurial