library/librarian.py

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Python
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#!/usr/bin/env python3
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import curses
import db_layer as db
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import browser
import gui as form
import help_bar as helpBar
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import book_data
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stdscr=0
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hb=0
menu_commands = [(' q','quit')]
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def menutest(s, l):
global stdscr
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global hb
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stdscr=s
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curses.curs_set(0)
(rows,cols)=stdscr.getmaxyx()
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bar = curses.newwin(1,cols-2,rows-1,1)
hb = helpBar.helpBar(bar)
hb.command=menu_commands
hb.refresh()
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w = curses.newwin(10,40,(rows-10)//2, (cols-40)//2)
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menu(w, l)
curses.curs_set(1)
# item is a list of (string, callable) tuples
def menu(w, items):
w.keypad(1)
highlight=0
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redrawMenu(w,items,highlight)
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w.refresh()
ch=w.getch()
while (ch!=113 and ch!=27): # leave on q or ESC
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if ch==curses.KEY_UP or ch==107 or ch==16:
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if highlight!=0:
w.chgat(highlight,0, 0)
highlight -= 1
while(items[highlight][0]==""):
highlight -=1
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w.chgat(highlight,0, curses.A_REVERSE)
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if ch==curses.KEY_DOWN or ch==106 or ch==14:
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if highlight!=len(items)-1:
w.chgat(highlight,0, 0)
highlight += 1
while(items[highlight][0]==""):
highlight +=1
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w.chgat(highlight,0, curses.A_REVERSE)
if ch==curses.KEY_PPAGE:
w.chgat(highlight,0, 0)
highlight = 0
w.chgat(highlight,0, curses.A_REVERSE)
if ch==curses.KEY_NPAGE:
w.chgat(highlight,0, 0)
highlight = len(items)-1
w.chgat(highlight,0, curses.A_REVERSE)
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if ch==114 or ch==10:
(s,f)=items[highlight]
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f()
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redrawMenu(w,items,highlight)
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w.refresh()
ch = w.getch()
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def redrawMenu(w,items,highlight):
i=0
for (mitem,fun) in items:
w.addstr(i,0, mitem)
i +=1
w.chgat(highlight, 0, curses.A_REVERSE)
w.refresh()
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hb.commands=menu_commands
hb.refresh()
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def addForm():
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w=curses.newwin(1,1)
(my,mx)=stdscr.getmaxyx()
bf = form.BookForm(w,hb)
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(r,c)=w.getmaxyx()
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w.mvwin((my-r)//2,(mx-c)//2)
bf.lookup_isbn=book_data.openLibrary_isbn
bf.lookup_lccn=book_data.openLibrary_lccn
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bf.caption='Add a Book'
bf.blabel = 'Add'
book = bf.event_loop()
bf.clear()
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if len(book)!=0:
db.addBook(book)
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def updateMenu():
w=curses.newwin(1,50,10,10)
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w.addstr("I will be used to update or modify book records")
w.refresh()
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def trashMenu():
(my,mx)=stdscr.getmaxyx()
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w=curses.newwin(20,80,(my-20)//2,(mx-80)//2)
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b = browser.trashBrowser(w,hb)
b.refreshBooks()
b.eventLoop()
b.clear()
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def browseMenu():
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(my,mx)=stdscr.getmaxyx()
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w=curses.newwin(20,80,(my-20)//2,(mx-80)//2)
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b = browser.bookBrowser(w,hb)
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b.refreshBooks()
b.eventLoop()
b.clear()
def catMenu():
(my,mx)=stdscr.getmaxyx()
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w=curses.newwin(10,40,(my-10)//2,(mx-40)//2)
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c = browser.categoryBrowser(w,hb)
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c.refreshCategories()
c.sortByColumn('category')
c.eventLoop()
c.clear()
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m = [("Browse Library", browseMenu),
("Add Book", addForm),
("Categories", catMenu),
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("View Trash", trashMenu),
("",exit),
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("Exit", exit)]
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curses.wrapper(menutest, m)