Subscriptions page foundations

rtv/subscriptions.py

@@ -0,0 +1,63 @@
+import curses
+import sys
+import time
+import logging
+
+from .content import SubscriptionContent
+from .page import BasePage, Navigator, BaseController
+from .helpers import open_browser, open_editor
+from .curses_helpers import (Color, LoadScreen, get_arrow, get_gold, add_line,
+                             show_notification)
+from .docs import COMMENT_FILE
+
+__all__ = ['SubscriptionController', 'SubscriptionPage']
+_logger = logging.getLogger(__name__)
+
+class SubscriptionController(BaseController):
+    character_map = {}
+
+class SubscriptionPage(BasePage):
+    def __init__(self, stdscr, reddit):
+        self.controller = SubscriptionController(self)
+        self.loader = LoadScreen(stdscr)
+
+        content = SubscriptionContent.get_list(reddit, self.loader)
+        super(SubscriptionPage, self).__init__(stdscr, reddit, content)
+
+    def loop(self):
+        "Main control loop"
+
+        self.active = True
+        while self.active:
+            self.draw()
+            cmd = self.stdscr.getch()
+            self.controller.trigger(cmd)
+
+    @SubscriptionController.register(curses.KEY_F5, 'r')
+    def refresh_content(self):
+        "Re-download all subscriptions and reset the page index"
+
+        try:
+            self.content = SubscriptionContent.get_list(self.reddit, self.loader)
+        except AccountError:
+            show_notification(self.stdscr, ['Not logged in'])
+        except SubredditError:
+            show_notification(self.stdscr, ['Invalid subreddit'])
+        except requests.HTTPError:
+            show_notification(self.stdscr, ['Could not reach subreddit'])
+        else:
+            self.nav = Navigator(self.content.get)
+
+    @staticmethod
+    def draw_item(win, data, inverted=False):
+        n_rows, n_cols = win.getmaxyx()
+        n_cols -= 1  # Leave space for the cursor in the first column
+
+        # Handle the case where the window is not large enough to fit the data.
+        valid_rows = range(0, n_rows)
+        offset = 0 if not inverted else -(data['n_rows'] - n_rows)
+
+        n_title = len(data['split_title'])
+        for row, text in enumerate(data['split_title'], start=offset):
+            if row in valid_rows:
+                add_line(win, text, row, 1, curses.A_BOLD)