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

from sface.screens.configscreen import ConfigScreen
from sface.screens.mainscreen import MainScreen


class SfaWindow(QWidget):
    
    def __init__(self, parent=None):
        QWidget.__init__(self, parent)

        self.config_screen = ConfigScreen(self)
        self.main_screen = MainScreen(self)

        self.screens = QStackedWidget(self)
        self.screens.addWidget(self.main_screen)
        self.screens.addWidget(self.config_screen)

        self.title = QLabel(self.main_screen.getTitleText(), self)
        self.switch = QLabel(self.config_screen.getLinkText(), self)
        self.switch.setAlignment(Qt.AlignRight)
        
        hlayout = QHBoxLayout()
        hlayout.addWidget(self.title)
        hlayout.addStretch()
        hlayout.addWidget(self.switch)

        layout = QVBoxLayout()
        layout.addLayout(hlayout)
        layout.addWidget(self.screens)
        self.setLayout(layout)
        self.resize(800, 600)

        self.connect(self.switch, SIGNAL('linkActivated(QString)'),
                     self.toScreen)

    def toScreen(self, link):
        if link == self.config_screen.name:
            self.toConfigScreen()
        elif link == self.main_screen.name:
            self.toMainScreen()

    def toConfigScreen(self):
        self.screens.setCurrentWidget(self.config_screen)
        self.switch.setText(self.main_screen.getLinkText())
        self.title.setText(self.config_screen.getTitleText())

    def toMainScreen(self):
        self.screens.setCurrentWidget(self.main_screen)
        self.switch.setText(self.config_screen.getLinkText())
        self.title.setText(self.main_screen.getTitleText())