Add Index widget.

3 files changed, 71 insertions, 0 deletions

diff --git a/ttystatus/__init__.py b/ttystatus/__init__.py
index 29c215e..60a29c5 100644
--- a/ttystatus/__init__.py
+++ b/ttystatus/__init__.py
@@ -25,3 +25,4 @@ from string import String
 from pathname import Pathname
 from bytesize import ByteSize
 from counter import Counter
+from index import Index
diff --git a/ttystatus/index.py b/ttystatus/index.py
new file mode 100644
index 0000000..d085a40
--- /dev/null
+++ b/ttystatus/index.py
@@ -0,0 +1,33 @@
+# Copyright 2010  Lars Wirzenius
+# 
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+import ttystatus
+
+
+class Index(ttystatus.Widget):
+
+    '''Display the position of a value in a list of values.'''
+    
+    def __init__(self, name, listname):
+        self.name = name
+        self.listname = listname
+        self.value = '0'
+        
+    def update(self, master, width):
+        try:
+            self.value = str(master[self.listname].index(master[self.name]))
+        except ValueError:
+            pass
diff --git a/ttystatus/index_tests.py b/ttystatus/index_tests.py
new file mode 100644
index 0000000..4aceaba
--- /dev/null
+++ b/ttystatus/index_tests.py
@@ -0,0 +1,37 @@
+# Copyright 2010  Lars Wirzenius
+# 
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+import unittest
+
+import ttystatus
+
+
+class IndexTests(unittest.TestCase):
+
+    def setUp(self):
+        self.w = ttystatus.Index('foo', 'foos')
+
+    def test_is_zero_initially(self):
+        self.assertEqual(str(self.w), '0')
+        
+    def test_gets_index_right(self):
+        self.w.update({ 'foo': 'x', 'foos': ['a', 'x', 'b'] }, 999)
+        self.assertEqual(str(self.w), '1')
+        
+    def test_handles_value_not_in_list(self):
+        self.w.update({ 'foo': 'xxx', 'foos': ['a', 'x', 'b'] }, 999)
+        self.assertEqual(str(self.w), '0')
+