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Fixed a few edit/delete edge cases, consolidated error handling.

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This commit is contained in:
Michael Lazar
2015-04-11 21:52:21 -07:00
parent 3e6b7c98d5
commit 4461782c67
4 changed files with 130 additions and 103 deletions
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28
rtv/curses_helpers.py
View File

@@ -10,7 +10,8 @@ from .helpers import strip_textpad
from .exceptions import EscapeInterrupt
__all__ = ['ESCAPE', 'UARROW', 'DARROW', 'BULLET', 'show_notification',
'show_help', 'LoadScreen', 'Color', 'text_input', 'curses_session']
'show_help', 'LoadScreen', 'Color', 'text_input', 'curses_session',
'prompt_input']
ESCAPE = 27
@@ -235,6 +236,31 @@ def text_input(window, allow_resize=True):
return strip_textpad(out)
def prompt_input(window, prompt, hide=False):
"""
Display a prompt where the user can enter text at the bottom of the screen
Set hide to True to make the input text invisible.
"""
attr = curses.A_BOLD | Color.CYAN
n_rows, n_cols = window.getmaxyx()
if hide:
prompt += ' ' * (n_cols - len(prompt) - 1)
window.addstr(n_rows-1, 0, prompt, attr)
out = window.getstr(n_rows-1, 1)
else:
window.addstr(n_rows - 1, 0, prompt, attr)
window.refresh()
subwin = window.derwin(1, n_cols - len(prompt),
n_rows - 1, len(prompt))
subwin.attrset(attr)
out = text_input(subwin)
return out
@contextmanager
def curses_session():
"""

127
rtv/page.py
View File

@@ -3,11 +3,14 @@ import time
import six
import sys
import logging
from contextlib import contextmanager
import praw.errors
import requests
from .helpers import clean, open_editor
from .curses_helpers import Color, show_notification, show_help, text_input
from .curses_helpers import (Color, show_notification, show_help, text_input,
prompt_input)
from .docs import COMMENT_EDIT_FILE, SUBMISSION_FILE
__all__ = ['Navigator', 'BaseController', 'BasePage']
@@ -173,6 +176,13 @@ class BasePage(object):
self._content_window = None
self._subwindows = None
def refresh_content(self):
raise NotImplementedError
@staticmethod
def draw_item(window, data, inverted):
raise NotImplementedError
@BaseController.register('q')
def exit(self):
sys.exit()
@@ -191,14 +201,6 @@ class BasePage(object):
self._move_cursor(1)
self.clear_input_queue()
def clear_input_queue(self):
"Clear excessive input caused by the scroll wheel or holding down a key"
self.stdscr.nodelay(1)
while self.stdscr.getch() != -1:
continue
self.stdscr.nodelay(0)
@BaseController.register('a')
def upvote(self):
data = self.content.get(self.nav.absolute_index)
@@ -240,14 +242,14 @@ class BasePage(object):
self.logout()
return
username = self.prompt_input('Enter username:')
password = self.prompt_input('Enter password:', hide=True)
username = prompt_input(self.stdscr, 'Enter username:')
password = prompt_input(self.stdscr, 'Enter password:', hide=True)
if not username or not password:
curses.flash()
return
try:
with self.loader():
with self.loader(message='Logging in'):
self.reddit.login(username, password)
except praw.errors.InvalidUserPass:
show_notification(self.stdscr, ['Invalid user/pass'])
@@ -259,8 +261,9 @@ class BasePage(object):
"""
Delete a submission or comment.
"""
if not self.reddit.is_logged_in():
show_notification(self.stdscr, ['Login to delete'])
show_notification(self.stdscr, ['Not logged in'])
return
data = self.content.get(self.nav.absolute_index)
@@ -269,22 +272,14 @@ class BasePage(object):
return
prompt = 'Are you sure you want to delete this? (y/n):'
char = self.prompt_input(prompt)
char = prompt_input(self.stdscr, prompt)
if char != 'y':
show_notification(self.stdscr, ['Delete canceled'])
show_notification(self.stdscr, ['Canceled'])
return
try:
with self.safe_call():
with self.loader(message='Deleting', delay=0):
data['object'].delete()
except praw.errors.APIException as e:
message = ['Error: {}'.format(e.error_type), e.message]
show_notification(self.stdscr, message)
_logger.exception(e)
except requests.HTTPError as e:
show_notification(self.stdscr, ['Unexpected Error'])
_logger.exception(e)
else:
with self.loader(delay=0, message='Deleting'):
time.sleep(2.0)
self.refresh_content()
@@ -293,8 +288,9 @@ class BasePage(object):
"""
Edit a submission or comment.
"""
if not self.reddit.is_logged_in():
show_notification(self.stdscr, ['Login to edit'])
show_notification(self.stdscr, ['Not logged in'])
return
data = self.content.get(self.nav.absolute_index)
@@ -316,54 +312,69 @@ class BasePage(object):
curses.endwin()
text = open_editor(info)
curses.doupdate()
if text == content:
show_notification(self.stdscr, ['Edit canceled'])
show_notification(self.stdscr, ['Canceled'])
return
try:
data['object'].edit(text)
except praw.errors.APIException as e:
message = ['Error: {}'.format(e.error_type), e.message]
show_notification(self.stdscr, message)
_logger.exception(e)
except requests.HTTPError as e:
show_notification(self.stdscr, ['Unexpected Error'])
_logger.exception(e)
else:
with self.loader(delay=0, message='Posting'):
with self.safe_call():
with self.loader(message='Editing', delay=0):
data['object'].edit()
time.sleep(2.0)
self.refresh_content()
def clear_input_queue(self):
"Clear excessive input caused by the scroll wheel or holding down a key"
self.stdscr.nodelay(1)
while self.stdscr.getch() != -1:
continue
self.stdscr.nodelay(0)
def logout(self):
"Prompt to log out of the user's account."
ch = self.prompt_input("Log out? (y/n):")
ch = prompt_input(self.stdscr, "Log out? (y/n):")
if ch == 'y':
self.reddit.clear_authentication()
show_notification(self.stdscr, ['Logged out'])
elif ch != 'n':
curses.flash()
def prompt_input(self, prompt, hide=False):
"Prompt the user for input"
@contextmanager
def safe_call(self):
"""
Wrap praw calls with extended error handling.
If a PRAW related error occurs inside of this context manager, a
notification will be displayed on the screen instead of the entire
application shutting down. This function will return a callback that
can be used to check the status of the call.
attr = curses.A_BOLD | Color.CYAN
n_rows, n_cols = self.stdscr.getmaxyx()
Usage:
#>>> with self.safe_call() as check_status:
#>>> self.reddit.submit(...)
#>>> success = check_status()
"""
if hide:
prompt += ' ' * (n_cols - len(prompt) - 1)
self.stdscr.addstr(n_rows-1, 0, prompt, attr)
out = self.stdscr.getstr(n_rows-1, 1)
success = None
check_status = lambda: success
try:
yield check_status
except praw.errors.APIException as e:
message = ['Error: {}'.format(e.error_type), e.message]
show_notification(self.stdscr, message)
_logger.exception(e)
success = False
except praw.errors.ClientException as e:
message = ['Error: Client Exception', e.message]
show_notification(self.stdscr, message)
_logger.exception(e)
success = False
except (requests.HTTPError, requests.ConnectionError) as e:
show_notification(self.stdscr, ['Unexpected Error'])
_logger.exception(e)
success = False
else:
self.stdscr.addstr(n_rows - 1, 0, prompt, attr)
self.stdscr.refresh()
window = self.stdscr.derwin(1, n_cols - len(prompt),
n_rows - 1, len(prompt))
window.attrset(attr)
out = text_input(window)
return out
success = True
def draw(self):
@@ -380,10 +391,6 @@ class BasePage(object):
self._draw_content()
self._add_cursor()
@staticmethod
def draw_item(window, data, inverted):
raise NotImplementedError
def _draw_header(self):
n_rows, n_cols = self._header_window.getmaxyx()

25
rtv/submission.py
View File

@@ -89,7 +89,7 @@ class SubmissionPage(BasePage):
"""
if not self.reddit.is_logged_in():
show_notification(self.stdscr, ['Login to post'])
show_notification(self.stdscr, ['Not logged in'])
return
data = self.content.get(self.nav.absolute_index)
@@ -112,26 +112,27 @@ class SubmissionPage(BasePage):
comment_text = open_editor(comment_info)
curses.doupdate()
if not comment_text:
show_notification(self.stdscr, ['Comment canceled'])
show_notification(self.stdscr, ['Canceled'])
return
try:
with self.safe_call():
with self.loader(message='Posting', delay=0):
if data['type'] == 'Submission':
data['object'].add_comment(comment_text)
else:
data['object'].reply(comment_text)
except praw.errors.APIException as e:
message = ['Error: {}'.format(e.error_type), e.message]
show_notification(self.stdscr, message)
_logger.exception(e)
except requests.HTTPError as e:
show_notification(self.stdscr, ['Unexpected Error'])
_logger.exception(e)
else:
with self.loader(delay=0, message='Posting'):
time.sleep(2.0)
self.refresh_content()
@SubmissionController.register('d')
def delete_comment(self):
"Delete a comment as long as it is not the current submission"
if self.nav.absolute_index != -1:
self.delete()
else:
curses.flash()
def draw_item(self, win, data, inverted=False):
if data['type'] == 'MoreComments':

35
rtv/subreddit.py
View File

@@ -12,7 +12,7 @@ from .content import SubredditContent
from .helpers import clean, open_browser, open_editor
from .docs import SUBMISSION_FILE
from .curses_helpers import (BULLET, UARROW, DARROW, GOLD, Color,
LoadScreen, show_notification)
LoadScreen, show_notification, prompt_input)
__all__ = ['opened_links', 'SubredditController', 'SubredditPage']
@@ -67,7 +67,7 @@ class SubredditPage(BasePage):
name = name or self.content.name
prompt = 'Search {}:'.format(name)
query = self.prompt_input(prompt)
query = prompt_input(self.stdscr, prompt)
if query is None:
return
@@ -83,7 +83,7 @@ class SubredditPage(BasePage):
def prompt_subreddit(self):
"Open a prompt to navigate to a different subreddit"
prompt = 'Enter Subreddit: /r/'
name = self.prompt_input(prompt)
name = prompt_input(self.stdscr, prompt)
if name is not None:
self.refresh_content(name=name)
@@ -114,7 +114,7 @@ class SubredditPage(BasePage):
"Post a new submission to the given subreddit"
if not self.reddit.is_logged_in():
show_notification(self.stdscr, ['Login to post'])
show_notification(self.stdscr, ['Not logged in'])
return
# Strips the subreddit to just the name
@@ -132,27 +132,20 @@ class SubredditPage(BasePage):
curses.doupdate()
# Validate the submission content
if not submission_text:
show_notification(self.stdscr, ['Post canceled'])
if not submission_text or '\n' not in submission_text:
show_notification(self.stdscr, ['Canceled'])
return
if '\n' not in submission_text:
show_notification(self.stdscr, ['No content'])
return
try:
title, content = submission_text.split('\n', 1)
self.reddit.submit(sub, title, text=content)
except praw.errors.APIException as e:
message = ['Error: {}'.format(e.error_type), e.message]
show_notification(self.stdscr, message)
_logger.exception(e)
except requests.HTTPError as e:
show_notification(self.stdscr, ['Unexpected Error'])
_logger.exception(e)
else:
with self.loader(delay=0, message='Posting'):
with self.safe_call() as check_status:
with self.loader(message='Posting', delay=0):
post = self.reddit.submit(sub, title, text=content)
time.sleep(2.0)
if check_status():
# Open the newly created post
page = SubmissionPage(self.stdscr, self.reddit, submission=post)
page.loop()
self.refresh_content()
@staticmethod