from PySide.QtGui import *
from PySide.QtCore import *
from karmadbg.uicore.async import async
from karmadbg.uicore.basewidgets import NativeDataViewWidget

class RegistersView(QPlainTextEdit):

   def __init__(self, uimanager, parent = None):
       super(RegistersView, self).__init__(parent)
       self.uimanager = uimanager
       self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff);
       self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff);
       self.setLineWrapMode(QPlainTextEdit.NoWrap)

   @async
   def updateView(self):
       regs = yield ( self.uimanager.debugClient.getRegistersAsync() )
       regstxt = ""
       for regName, regValue in regs:
           regstxt += "%s: %d (%x)\n" % (regName, regValue, regValue)
       self.setPlainText(regstxt)

   def clear(self):
       self.setPlainText("")


class RegistersWidget(NativeDataViewWidget):

   def __init__(self, widgetSettings, uimanager):
       super(RegistersWidget, self).__init__(uimanager)
       self.uimanager = uimanager
       self.registerView = RegistersView(uimanager, parent = self)
       self.setWindowTitle("Registers")
       self.setWidget(self.registerView )
       self.registerView.setReadOnly(True)
       self.registerView.setDisabled(True)

       self.uimanager.mainwnd.addDockWidget(Qt.TopDockWidgetArea, self)

   def dataUpdate(self):
       self.registerView.updateView()

   def dataUnavailable(self):
       self.registerView.clear()