我正在为应用编写一个ncurses GUI。我在文件 public class BaseRepository<T> : IBaseRepository<T> where T : class
{
private IUnitOfWork unitOfWork;
private DbSet<T> dbSet;
public BaseRepository(IUnitOfWork unitOfWork)
{
this.unitOfWork = unitOfWork;
this.dbSet = unitOfWork.DbContext.Set<T>();
}
public virtual IEnumerable<T> Get(Expression<Func<T, bool>> filter = null, Func<IQueryable<T>, IOrderedQueryable<T>> orderBy = null, string includeProperties = "")
{
IQueryable<T> query = dbSet;
if (filter != null)
{
query = query.Where(filter);
}
foreach (var includeProperty in includeProperties.Split
(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
query = query.Include(includeProperty);
}
if (orderBy != null)
{
return orderBy(query).ToList();
}
else
{
return query.ToList();
}
}
public virtual IEnumerable<T> Get()
{
return dbSet.ToList();
}
public virtual IEnumerable<T> Get(Expression<Func<T, bool>> predicate)
{
return dbSet.Where(predicate);
}
public virtual T Get(object id)
{
return dbSet.Find(id);
}
public virtual IQueryable<T> Where(Expression<Func<T, bool>> predicate)
{
return dbSet.Where(predicate);
}
public virtual IQueryable<T> Query()
{
return dbSet;
}
public bool Any(Expression<Func<T, bool>> predicate)
{
return dbSet.Any(predicate);
}
public T First(Expression<Func<T, bool>> predicate)
{
return dbSet.First(predicate);
}
public T FirstOrDefault(Expression<Func<T, bool>> predicate)
{
return dbSet.FirstOrDefault(predicate);
}
public virtual void Insert(T entity)
{
dbSet.Add(entity);
}
public virtual void Update(T entity)
{
if (unitOfWork.DbContext.Entry(entity).State == EntityState.Detached)
{
dbSet.Attach(entity);
}
unitOfWork.DbContext.Entry(entity).State = EntityState.Modified;
}
public virtual void Delete(object id)
{
T entityToDelete = dbSet.Find(id);
Delete(entityToDelete);
}
public virtual void Delete(T entity)
{
if (unitOfWork.DbContext.Entry(entity).State == EntityState.Detached)
{
dbSet.Attach(entity);
}
dbSet.Remove(entity);
}
private bool disposed = false;
protected virtual void Dispose(bool disposing)
{
if (!this.disposed)
{
if (disposing)
{
unitOfWork.DbContext.Dispose();
}
}
this.disposed = true;
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
public IEnumerable<T> ExecWithStoreProcedure(string query, params object[] parameters)
{
return unitOfWork.DbContext.Database.SqlQuery<T>(query, parameters);
}
}
中有以下代码：
admin.py代码本身（函数#-*- coding: utf-8 -*-
import curses.textpad
from gui_helpers import *
import global_vars as g
def parse_command(win, command):
# print_str(win, 0, 0, command)
if command == "help":
print_str(win, 1, 1, "Available commands: add - adds a board, list - lists boards, mkdir - makes board directory")
def display_admin_screen(win, keypress):
rows = win.getmaxyx()[0]
cols = win.getmaxyx()[1]
print_str_center(win, 0, 1, "Admin interface", g.RED|g.BOLD)
print_str(win, 1, 0, "Command line")
textpad_win = win.subwin(1, cols - 1, 3, 1)
output_win = win.subwin(5, cols - 1, 5, 1)
output_win.refresh()
textpad_win.refresh()
win.refresh()
curses.curs_set(1)
textpad = curses.textpad.Textbox(textpad_win)
textpad.stripspaces = 0
textpad_win.move(0,0)
textpad.edit()
command = textpad.gather()
parse_command(output_win, command)
# print_str(output_win, 0, 0, command)
textpad_win.clear()
curses.curs_set(0)
）在文件display_admin_screen()的循环中运行，该循环具有所有必需的库导入：
gui.py我遇到的问题是，当我输入＆＃39; help＆＃39;在while True:
keypress = stdscr.getch()
display_title_bar(stdscr)
if g.STATE == 'motd':
display_motd(working_win, keypress)
elif g.STATE == 'boards':
boards_view.display_threads(working_win, g.SELECTED_BOARD, keypress)
elif g.STATE == 'admin':
admin.display_admin_screen(working_win, keypress)
working_win.refresh()
stdscr.refresh()
的文本框中，没有任何反应。它应该在admin.py中显示帮助文本。我已经检查过该值是否正确传递给函数output_win，并且它是一个正确的值。我认为这可能是在循环中创建子窗口的问题，所以我尝试在循环外的parse_command()中创建它们并将它们传递给函数，但无济于事。如果我只是告诉gui.py函数将某些内容写入输出窗口，那就没问题了。出于某种原因，parse_command()块似乎是一个问题。
答案 0 :(得分：0)
问题是您的程序使用
从标准屏幕读取stdscr.getch()
在stdscr上刷新，可以覆盖任何其他窗口（例如output_win）。要解决此问题，您应该使用您希望 更新的窗口来调用.getch()。
如果这样做很尴尬，可以使用.touchwin()和wrefresh()强制给定窗口进行重新绘制。
答案 1 :(得分：0)
我终于发现了什么是错的。按Enter键后，命令附加了一堆空格（不是换行符\n）。我所要做的就是改变：
command = textpad.gather()
到
command = textpad.gather().strip()
它现在有效。