1 files changed, 49 insertions, 0 deletions
diff --git a/asciifarm/client/listselector.py b/asciifarm/client/listselector.py
new file mode 100644
index 0000000..b88b967
--- /dev/null
+++ b/asciifarm/client/listselector.py
@@ -0,0 +1,49 @@
+
+from asciifarm.common import utils
+
+
+class ListSelector:
+    
+    def __init__(self, widget):
+        self.widget = widget
+        self.items = []
+        self.selector = 0
+    
+    def getSelected(self):
+        return self.selector
+    
+    def select(self, value, relative=False, modular=False):
+        invLen = len(self.items)
+        if relative:
+            value += self.selector
+        if modular and invLen:
+            value %= invLen
+        if value < 0:
+            value = 0
+        if value >= invLen:
+            value = invLen-1
+        if value in range(invLen):
+            self.doSelect(value)
+    
+    def doSelect(self, value):
+        self.selector = value
+        self.widget.select(value)
+    
+    def setItems(self, items):
+        self.items = items
+        self.selector = utils.clamp(self.selector, 0, len(items)-1)
+        self.widget.set_items([self.itemName(item) for item in self.items])
+        self.widget.select(self.selector)
+    
+    def getItem(self, num):
+        return self.items[num]
+    
+    def getSelectedItem(self):
+        return self.getItem(self.getSelected())
+    
+    def getNumItems(self):
+        return len(self.items)
+    
+    def itemName(self, item):
+        return item
+