console: refactor the way we keep global view state

libmproxy/console/__init__.py

@@ -188,8 +188,6 @@ class ConsoleMaster(flow.FlowMaster):
         self.eventlog = options.eventlog
         self.eventlist = urwid.SimpleListWalker([])
 
-        self.statusbar = None
-
         if options.client_replay:
             self.client_playback_path(options.client_replay)
 
@@ -287,12 +285,7 @@ class ConsoleMaster(flow.FlowMaster):
         try:
             return flow.read_flows_from_paths([path])
         except flow.FlowReadError as e:
-            if not self.statusbar:
+            signals.status_message.send(message=e.strerror)
-                print >> sys.stderr, e.strerror
-                sys.exit(1)
-            else:
-                signals.status_message.send(message=e.strerror)
-            return None
 
     def client_playback_path(self, path):
         flows = self._readflows(path)
@@ -326,7 +319,9 @@ class ConsoleMaster(flow.FlowMaster):
         try:
             subprocess.call(cmd)
         except:
-            signals.status_message.send(message="Can't start editor: %s" % " ".join(c))
+            signals.status_message.send(
+                message = "Can't start editor: %s" % " ".join(c)
+            )
         else:
             data = open(name, "rb").read()
         self.ui.start()
@@ -386,17 +381,11 @@ class ConsoleMaster(flow.FlowMaster):
         self.ui.set_terminal_properties(256)
         self.ui.register_palette(self.palette.palette())
         self.flow_list_walker = flowlist.FlowListWalker(self, self.state)
-        self.view = None
-        self.statusbar = None
-        self.header = None
-        self.body = None
         self.help_context = None
-        self.onekey = False
         self.loop = urwid.MainLoop(
-            self.view,
+            urwid.SolidFill("x"),
             screen = self.ui,
         )
-        self.view_flowlist()
 
         self.server.start_slave(
             controller.Slave,
@@ -425,6 +414,11 @@ class ConsoleMaster(flow.FlowMaster):
             raise urwid.ExitMainLoop
         signal.signal(signal.SIGINT, exit)
 
+        self.loop.set_alarm_in(
+            0.0001,
+            lambda *args: self.view_flowlist()
+        )
+
         try:
             self.loop.run()
         except Exception:
@@ -438,43 +432,38 @@ class ConsoleMaster(flow.FlowMaster):
         sys.stderr.flush()
         self.shutdown()
 
-    def make_view(self):
-        self.view = window.Window(
-            self,
-            self.body,
-            header = self.header,
-            footer = self.statusbar
-        )
-        return self.view
-
     def view_help(self):
-        h = help.HelpView(
+        self.loop.widget = window.Window(
             self,
-            self.help_context,
+            help.HelpView(
-            (self.statusbar, self.body, self.header)
+                self,
+                self.help_context,
+                self.loop.widget,
+            ),
+            None,
+            statusbar.StatusBar(self, help.footer)
         )
-        self.statusbar = statusbar.StatusBar(self, help.footer)
-        self.body = h
-        self.header = None
-        self.loop.widget = self.make_view()
 
     def view_flowdetails(self, flow):
-        h = flowdetailview.FlowDetailsView(
+        self.loop.widget = window.Window(
             self,
-            flow,
+            flowdetailview.FlowDetailsView(
-            (self.statusbar, self.body, self.header)
+                self,
+                flow,
+                self.loop.widget
+            ),
+            None,
+            statusbar.StatusBar(self, flowdetailview.footer)
         )
-        self.statusbar = statusbar.StatusBar(self, flowdetailview.footer)
-        self.body = h
-        self.header = None
-        self.loop.widget = self.make_view()
 
     def view_grideditor(self, ge):
-        self.body = ge
-        self.header = None
         self.help_context = ge.make_help()
-        self.statusbar = statusbar.StatusBar(self, grideditor.footer)
+        self.loop.widget = window.Window(
-        self.loop.widget = self.make_view()
+            self,
+            ge,
+            None,
+            statusbar.StatusBar(self, grideditor.FOOTER)
+        )
 
     def view_flowlist(self):
         if self.ui.started:
@@ -483,24 +472,30 @@ class ConsoleMaster(flow.FlowMaster):
             self.state.set_focus(self.state.flow_count())
 
         if self.eventlog:
-            self.body = flowlist.BodyPile(self)
+            body = flowlist.BodyPile(self)
         else:
-            self.body = flowlist.FlowListBox(self)
+            body = flowlist.FlowListBox(self)
-        self.statusbar = statusbar.StatusBar(self, flowlist.footer)
-        self.header = None
         self.state.view_mode = common.VIEW_LIST
 
-        self.loop.widget = self.make_view()
         self.help_context = flowlist.help_context
+        self.loop.widget = window.Window(
+            self,
+            body,
+            None,
+            statusbar.StatusBar(self, flowlist.footer)
+        )
+        self.loop.draw_screen()
 
     def view_flow(self, flow):
-        self.body = flowview.FlowView(self, self.state, flow)
-        self.header = flowview.FlowViewHeader(self, flow)
-        self.statusbar = statusbar.StatusBar(self, flowview.footer)
         self.state.set_focus_flow(flow)
         self.state.view_mode = common.VIEW_FLOW
-        self.loop.widget = self.make_view()
         self.help_context = flowview.help_context
+        self.loop.widget = window.Window(
+            self,
+            flowview.FlowView(self, self.state, flow),
+            flowview.FlowViewHeader(self, flow),
+            statusbar.StatusBar(self, flowview.footer)
+        )
 
     def _write_flows(self, path, flows):
         if not path:

libmproxy/console/flowdetailview.py

@@ -18,10 +18,7 @@ class FlowDetailsView(urwid.ListBox):
     def keypress(self, size, key):
         key = common.shortcuts(key)
         if key == "q":
-            self.master.statusbar = self.state[0]
+            self.master.loop.widget = self.state
-            self.master.body = self.state[1]
-            self.master.header = self.state[2]
-            self.master.loop.widget = self.master.make_view()
             return None
         elif key == "?":
             key = None

libmproxy/console/grideditor.py

@@ -10,11 +10,11 @@ from .. import utils, filt, script
 from netlib import http_uastrings
 
 
-footer = [
+FOOTER = [
     ('heading_key', "enter"), ":edit ",
     ('heading_key', "q"), ":back ",
 ]
-footer_editing = [
+FOOTER_EDITING = [
     ('heading_key', "esc"), ":stop editing ",
 ]
 
@@ -164,12 +164,12 @@ class GridWalker(urwid.ListWalker):
             self.editing = GridRow(
                 self.focus_col, True, self.editor, self.lst[self.focus]
             )
-            self.editor.master.statusbar.update(footer_editing)
+            self.editor.master.loop.widget.footer.update(FOOTER_EDITING)
             self._modified()
 
     def stop_edit(self):
         if self.editing:
-            self.editor.master.statusbar.update(footer)
+            self.editor.master.loop.widget.footer.update(FOOTER)
             self.set_current_value(self.editing.get_edit_value(), False)
             self.editing = False
             self._modified()
@@ -268,7 +268,7 @@ class GridEditor(urwid.WidgetWrap):
             self.lb,
             header = urwid.Pile([title, h])
         )
-        self.master.statusbar.update("")
+        self.master.loop.widget.footer.update("")
         self.show_empty_msg()
 
     def show_empty_msg(self):

libmproxy/console/help.py

@@ -180,10 +180,7 @@ class HelpView(urwid.ListBox):
     def keypress(self, size, key):
         key = common.shortcuts(key)
         if key == "q":
-            self.master.statusbar = self.state[0]
+            self.master.loop.widget = self.state
-            self.master.body = self.state[1]
-            self.master.header = self.state[2]
-            self.master.loop.widget = self.master.make_view()
             return None
         elif key == "?":
             key = None

libmproxy/console/statusbar.py

@@ -114,6 +114,7 @@ class StatusBar(urwid.WidgetWrap):
         self.ib = urwid.WidgetWrap(urwid.Text(""))
         self._w = urwid.Pile([self.ib, self.ab])
         signals.update_settings.connect(self.sig_update_settings)
+        self.redraw()
 
     def sig_update_settings(self, sender):
         self.redraw()
@@ -188,7 +189,11 @@ class StatusBar(urwid.WidgetWrap):
         if self.master.state.follow_focus:
             opts.append("following")
         if self.master.stream_large_bodies:
-            opts.append("stream:%s" % utils.pretty_size(self.master.stream_large_bodies.max_size))
+            opts.append(
+                "stream:%s" % utils.pretty_size(
+                    self.master.stream_large_bodies.max_size
+                )
+            )
 
         if opts:
             r.append("[%s]"%(":".join(opts)))