laydi/system/navigator.py

import gtk
import gobject
import plots
import logger

class NavigatorStore (gtk.TreeStore):
    def __init__(self):
        gtk.TreeStore.__init__(self, gobject.TYPE_STRING, plots.Plot)

        iter = self.append(None)
        self.set_value(iter, 0, ('Sine Plot'))
        self.set_value(iter, 1, (plots.SinePlot()))

        iter = self.append(None)
        self.set_value(iter, 0, ('Sine Plot 1'))
        self.set_value(iter, 1, (plots.EmptyView()))

    def plot_at(self, path):
        iter = self.get_iter(path)
        plot = self.get_value(iter, 1)
        if plot:
            plot.show()
        return plot

class NavigatorView (gtk.TreeView):
    def __init__(self, nav, app):
        gtk.TreeView.__init__(self, nav)
        self.navigator = nav
        self.app = app

        self.set_headers_visible(False)
        self.connect('row-activated', self.row_activated_handler)

        renderer = gtk.CellRendererText()
        self.object_col = gtk.TreeViewColumn('Object', renderer, text=0)
        self.append_column(self.object_col)

        logger.log('debug', 'Initializing naviagor window')

    def row_activated_handler(self, widget, path, column):
        plot = self.navigator.plot_at(path)
        logger.log('notice', 'Button pressed')
        self.app.change_plot(plot)