import sys

from PyQt4.QtCore import *
from PyQt4.QtGui import *

from sface.config import config


class LogWindow(QDialog):
    def __init__(self, parent=None):
        QWidget.__init__(self, parent)
        self.setWindowTitle("SFI Log")
        self.text = QTextBrowser(self)

        layout = QVBoxLayout()
        layout.addWidget(self.text)
        self.setLayout(layout)

        # To Baris: from the doc,
        # QIODevice is abstract and can not be instantiated
        # I am putting QObject just to let the GUI start.
        #self.io = QIODevice(self)
        self.io = QObject()
        self.connect(self.io, SIGNAL('canReadLine()'), self.appendLine)

    def redirectOutput(self):
        print "Redirecting all output to Log Window. Please open the log window to see the output"
        self.old_stdout = sys.stdout
        self.old_stderr = sys.stderr
        sys.stdout = self.io
        sys.stderr = self.io

        self.old_stdout.write("test")
        self.text.append("io Test\n")

    def appendLine(self):
        self.text.append(self.io.readLine())