# noinspection PyPackageRequirements
import wx
import gui.globalEvents as GE
from gui.chrome_tabs import EVT_NOTEBOOK_PAGE_CHANGED
import gui.mainFrame


class BlankPage(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, size=(0, 0))

        self.mainFrame = gui.mainFrame.MainFrame.getInstance()
        self.parent = parent

        self.parent.Bind(EVT_NOTEBOOK_PAGE_CHANGED, self.pageChanged)
        self.SetBackgroundColour(wx.SystemSettings.GetColour(wx.SYS_COLOUR_WINDOW))

        wx.PostEvent(self.mainFrame, GE.FitChanged(fitIDs=()))

    def Destroy(self):
        # todo: This unbind caused fits to not recalc when switching to their tabs; find out why
        # self.parent.Unbind(EVT_NOTEBOOK_PAGE_CHANGED)
        wx.Panel.Destroy(self)

    def pageChanged(self, event):
        if self.parent.IsActive(self):
            fitID = None
            # sFit = Fit.getInstance()
            # sFit.switchFit(fitID)
            wx.PostEvent(self.mainFrame, GE.FitChanged(fitIDs=(fitID,)))

        event.Skip()