1 files changed, 115 insertions, 0 deletions
diff --git a/libmproxy/console/select.py b/libmproxy/console/select.py
new file mode 100644
index 00000000..bf96a785
--- /dev/null
+++ b/libmproxy/console/select.py
@@ -0,0 +1,115 @@
+import urwid
+
+from . import common
+
+
+class _OptionWidget(urwid.WidgetWrap):
+    def __init__(self, option, text, shortcut, active, focus):
+        self.option = option
+        textattr = "text"
+        keyattr = "key"
+        if focus and active:
+            textattr = "option_active_selected"
+            keyattr = "option_selected_key"
+        elif focus:
+            textattr = "option_selected"
+            keyattr = "option_selected_key"
+        elif active:
+            textattr = "option_active"
+        if shortcut:
+            text = common.highlight_key(
+                text,
+                shortcut,
+                textattr = textattr,
+                keyattr = keyattr
+            )
+        opt = urwid.Text(text, align="left")
+        opt = urwid.AttrWrap(opt, textattr)
+        opt = urwid.Padding(opt, align = "center", width = 40)
+        urwid.WidgetWrap.__init__(self, opt)
+
+    def keypress(self, size, key):
+        return key
+
+    def selectable(self):
+        return True
+
+
+class OptionWalker(urwid.ListWalker):
+    def __init__(self, options):
+        urwid.ListWalker.__init__(self)
+        self.options = options
+        self.focus = 0
+
+    def set_focus(self, pos):
+        self.focus = pos
+
+    def get_focus(self):
+        return self.options[self.focus].render(True), self.focus
+
+    def get_next(self, pos):
+        if pos >= len(self.options) - 1:
+            return None, None
+        return self.options[pos + 1].render(False), pos + 1
+
+    def get_prev(self, pos):
+        if pos <= 0:
+            return None, None
+        return self.options[pos - 1].render(False), pos - 1
+
+
+class Heading:
+    def __init__(self, text):
+        self.text = text
+
+    def render(self, focus):
+        opt = urwid.Text("\n" + self.text, align="left")
+        opt = urwid.AttrWrap(opt, "title")
+        opt = urwid.Padding(opt, align = "center", width = 40)
+        return opt
+
+
+_neg = lambda: False
+
+
+class Option:
+    def __init__(self, text, shortcut, getstate=None, activate=None):
+        self.text = text
+        self.shortcut = shortcut
+        self.getstate = getstate or _neg
+        self.activate = activate or _neg
+
+    def render(self, focus):
+        return _OptionWidget(
+            self,
+            self.text,
+            self.shortcut,
+            self.getstate(),
+            focus)
+
+
+class Select(urwid.ListBox):
+    def __init__(self, options):
+        self.walker = OptionWalker(options)
+        urwid.ListBox.__init__(
+            self,
+            self.walker
+        )
+        self.options = options
+        self.keymap = {}
+        for i in options:
+            if hasattr(i, "shortcut") and i.shortcut:
+                if i.shortcut in self.keymap:
+                    raise ValueError("Duplicate shortcut key: %s" % i.shortcut)
+                self.keymap[i.shortcut] = i
+
+    def keypress(self, size, key):
+        if key == "enter" or key == " ":
+            self.get_focus()[0].option.activate()
+            return None
+        key = common.shortcuts(key)
+        if key in self.keymap:
+            self.keymap[key].activate()
+            self.set_focus(self.options.index(self.keymap[key]))
+            return None
+        return super(self.__class__, self).keypress(size, key)