customize main widget to allow for customization

this includes two test commands to move items up and down the initiative
with < and >

bin/tabletracker

@@ -4,12 +4,14 @@ import npyscreen
 
 from npytabletracker.ui import TableTrackerDisplay
 
+
 class TableTrackerApplication(npyscreen.NPSAppManaged):
     """Combine the pieces of the application."""
 
     def onStart(self):
         """Link necessary UI elements and state management and whatnot."""
         self.addForm('MAIN', TableTrackerDisplay)
-        
+
+
 app = TableTrackerApplication()
 app.run()

npytabletracker/cmd.py

@@ -0,0 +1,29 @@
+"""ActionController for command processing."""
+import re
+
+import npyscreen
+
+
+class ManagementActionController(npyscreen.ActionControllerSimple):
+    """Process commands from the command line and act on them."""
+
+    ADD_REGEX = r'^/add (.*)$'
+    TITLE_REGEX = r'^/title (.*)$'
+
+    def create(self):
+        """Hook command handlers."""
+        self.add_action(self.ADD_REGEX, self.add_character, False)
+        self.add_action(self.TITLE_REGEX, self.title, False)
+
+    def add_character(self, command_line, widget_proxy, live):
+        """Add a character to the list."""
+        match = re.search(self.ADD_REGEX, command_line, re.IGNORECASE)
+        self.parent.value.characters.append(match.group(1))
+        self.parent.wMain.values = self.parent.value.characters
+        self.parent.wMain.display()
+
+    def title(self, command_line, widget_proxy, live):
+        """Set the title in the top status bar."""
+        match = re.search(self.TITLE_REGEX, command_line, re.IGNORECASE)
+        self.parent.wStatus1.value = match.group(1)
+        self.parent.wStatus1.display()

npytabletracker/data.py

@@ -0,0 +1,9 @@
+"""Maintain state in an object for use as a DATA_CONTROLLER."""
+
+
+class TableState(object):
+    """Track character initiative, hit points, etc."""
+
+    def __init__(self):
+        """Initialize data."""
+        self.characters = []

npytabletracker/ui.py

@@ -1,6 +1,47 @@
 """UI elements for the npytabletracker application."""
 import npyscreen
 
+from npytabletracker.cmd import ManagementActionController
+from npytabletracker.data import TableState
+
+
+class CharacterList(npyscreen.MultiLineAction):
+    """Display characters' initiative order and allow for operations on them."""
+
+    def __init__(self, *args, **keywords):
+        """Set up some extra handlers when selecting characters in the list."""
+        super(CharacterList, self).__init__(*args, **keywords)
+        self.add_handlers({
+            ">": self.when_init_move_down,
+            "<": self.when_init_move_up
+        })
+
+    def when_init_move_down(self, *args, **keywords):
+        """Move the selected character down one spot in the initiative table."""
+        if self.cursor_line < len(self.parent.value.characters) - 1:
+            chars = self.parent.value.characters
+            pos = self.cursor_line
+            chars[pos], chars[pos+1] = chars[pos+1], chars[pos]
+            self.parent.update_list()
+            self.cursor_line += 1
+
+    def when_init_move_up(self, *args, **keywords):
+        """Move the selected character up one spot in the initiative table."""
+        if self.cursor_line - 1 >= 0:
+            chars = self.parent.value.characters
+            pos = self.cursor_line
+            chars[pos], chars[pos-1] = chars[pos-1], chars[pos]
+            self.parent.update_list()
+            self.cursor_line -= 1
+
+
 class TableTrackerDisplay(npyscreen.FormMuttActiveTraditional):
     """Create the high level form, which is organized like mutt/irssi."""
-    pass
+
+    ACTION_CONTROLLER = ManagementActionController
+    DATA_CONTROLER = TableState
+    MAIN_WIDGET_CLASS = CharacterList
+
+    def update_list(self):
+        """Update data in the window and represent it."""
+        self.wMain.display()

requirements/requirements-dev.in

@@ -1,3 +1,4 @@
 -r requirements.in
 
+flake8
 pip-tools

requirements/requirements-dev.txt

@@ -5,6 +5,11 @@
 #    pip-compile --output-file=requirements/requirements-dev.txt requirements/requirements-dev.in
 #
 click==7.0                # via pip-tools
+entrypoints==0.3          # via flake8
+flake8==3.7.9
+mccabe==0.6.1             # via flake8
 npyscreen==4.10.5
 pip-tools==4.4.1
+pycodestyle==2.5.0        # via flake8
+pyflakes==2.1.1           # via flake8
 six==1.14.0               # via pip-tools

setup.cfg

@@ -0,0 +1,2 @@
+[flake8]
+max-line-length = 120