Python Tkinter实现的linux命令帮助手册

由于一些工作环境无法上网，而且需要经常使用linux命令，但是如果对linux命令不熟悉，效率就会很低。

正好最近在学习tkinter，就自己写一个linux帮助手册，既熟悉命令，又练习python，下面是源代码：

# -*- coding:utf-8 -*-
__author__ = 'Cullen'

from Tkinter import *
from PIL import ImageTk, Image
import tkFont
import tkMessageBox
import os
import os.path

def exit_window(root):
    """close the main window"""
    root.destroy()

def show_info():
        """show the software info"""
        tkMessageBox.showinfo("About",
                              """
             Linux Command Manual
        ------------------------------------------
            version: 1.0
            author: Cullen
            Email:  wangyiyan402@163.com
        ------------------------------------------""" )

def show_help():
    """show help info"""
    tkMessageBox.showinfo("help",
                              """
                 Linux & Autotest Command Manual
        -----------------------------------------------------------------
        1.鼠标或键盘箭头移动到所要查看的命令，回车即可在右恻查看命
        令帮助文档.
        2.搜索框内可直接输入要查询的命令，回车或点击搜索图标均可.
        3.如果有新命令文档需要添加，请将文档信息以txt格式，编码选择
        utf-8保存到doc文件夹下.
        ------------------------------------------------------------------""" )

def get_cmd_list(dir):
    """this function will walk the given dir path
    and return a list contains all filename under this path in order"""

    if not os.path.exists(dir):
        print "Path Error: No such file or directory"
        tkMessageBox.showwarning("提示", "Directory : %s not found!" % dir)
        #sys.exit(1)

    cmd_list = os.listdir(dir)
    result =[]
    for item in cmd_list:
        if item.endswith('.txt'):
            result.append(item)
    result.sort()
    return result

class RightFrame():
    """create the frame include the label and Text area"""
    cmd_path = os.getcwd() + os.path.sep + 'doc\\'
    def __init__(self):
        self.frame = Frame()

        self.image = ImageTk.PhotoImage(file=r'img\zoom.bmp')
        self.button = Button(self.frame, image=self.image, command=self.get_entry_input)
        self.button.pack(side=RIGHT, fill=X)

        self.entry = Entry(self.frame, bd=2, width=40, justify=RIGHT)
        self.entry.pack(side=RIGHT, fill=X)
        self.entry.bind('<Return>', self.get_input)

    def find_input(self, input, dir):
        global left_frame
        global textarea
        cmd_list = get_cmd_list(dir)
        #print cmd_list
        input += '.txt'
        file_path = dir + input

        if input not in cmd_list:
            tkMessageBox.showwarning("提示", "Command : %s not found!" % input)
            return
        index = cmd_list.index(input)
        #get the activate index
        left_frame.listbox.selection_clear(0, END)
        # active_index = left_frame.listbox.index(ACTIVE)
        # print active_index
        # #
        # print left_frame.listbox.selection_clear(active_index)

        left_frame.listbox.selection_set(index)
        #print left_frame.listbox.index(ACTIVE)

        textarea.config(state=NORMAL)
        textarea.delete(1.0, END)

        try:
            with open(file_path, 'r') as f:
                for item in f:
                    textarea.insert(END, item)
        except IOError, e:
            #print "open cmd info error: %s" % e
            tkMessageBox.showwarning("提示", "open cmd %s: %s" % (input, e))
            self.entry.delete(0, END)

        textarea.config(state=DISABLED)

    def get_input(self, event):
        self.input = self.entry.get().strip()
        self.entry.delete(0, END)
        self.find_input(self.input, self.cmd_path)

    def get_entry_input(self):
        #print os.getcwd()
        self.input = self.entry.get().strip()
        self.find_input(self.input, self.cmd_path)

class LeftFrame():
    """create the frame which contains a listbox and scrollbar"""
    #message_ft = tkFont.Font(family="Arial", size=12)

    def __init__(self):
        self.message_ft = tkFont.Font(family="Arial", size=12)
        #self.active = ''
        self.frame = Frame()
        self.scrollbar = Scrollbar(self.frame, orient=VERTICAL, bg='green')
        self.listbox = Listbox(self.frame, bg="#D6D6D6", selectborderwidth=1, selectbackground="#1979CA",
                               font=self.message_ft, height=20, width=30)
        self.scrollbar.config(command=self.listbox.yview)
        self.scrollbar.pack(side=LEFT, fill=Y)
        self.listbox.config(yscrollcommand=self.scrollbar.set)
        self.listbox.pack(side=RIGHT, fill=BOTH, expand=1)
        self.listbox.bind('<Return>', self.show_cmd_mean)

    def show_cmd_mean(self, event):
        global textarea
        textarea.config(state=NORMAL)
        textarea.delete(1.0, END)

        #print event.widget.get(ACTIVE)
        self.active = event.widget.get(ACTIVE)
        #textarea.insert(END, self.active)

        try:
            file_path = os.getcwd() + os.path.sep + "doc\\" + self.active + '.txt'
            with open(file_path, 'r') as f:
                for item in f:
                    textarea.insert(END, item)
        except IOError, e:
            #print "open cmd info error: %s" % e
            tkMessageBox.showwarning('提示', "open cmd info error: %s" % e)

        textarea.config(state=DISABLED)

class TextFrame():
        def __init__(self):
            global textarea
            self.frame = Frame()
            self.scrollbar = Scrollbar(self.frame, orient=VERTICAL)
            textarea = Text(self.frame, bg='#CCFFCC', width=90, height=30)
            self.scrollbar.config(command=textarea.yview)
            self.scrollbar.pack(side=RIGHT, fill=Y)
            textarea.config(yscrollcommand=self.scrollbar.set)
            textarea.pack(side=LEFT, fill=BOTH, expand=1)

class MyMenu():
        def __init__(self, root):
            self.menubar = Menu(root)
            self.optionmenu = Menu(self.menubar, tearoff=1)
            self.optionmenu.add_command(label='About', command=show_info)
            self.optionmenu.add_command(label='Help', command=show_help)
            self.optionmenu.add_separator()
            self.optionmenu.add_command(label='Exit', command=lambda : exit_window(root))
            self.menubar.add_cascade(label='Options', menu=self.optionmenu)

def main():
    global textarea
    global left_frame
    root = Tk()
    root.title("Command Manual")
    root.resizable(0,0)

    menu = MyMenu(root)
    root.config(menu=menu.menubar)
    left_frame = LeftFrame()
    left_frame.frame.grid(row=0, column=0, rowspan=2, sticky=N+W+S+E)

    right_frame = RightFrame()
    right_frame.frame.grid(row=0, column=1, sticky=N+W+E)

    #show the command list according the given path
    cmd_path = os.getcwd()
    cmd_path = cmd_path + os.path.sep + 'doc'
    cmd_list = get_cmd_list(cmd_path)

    for item in cmd_list:
        item = item.split('.')[0]
        left_frame.listbox.insert(END, item)

    text_frame = TextFrame()
    text_frame.frame.grid(row=1,column=1, sticky=N+W+S+E )

    root.mainloop()

if __name__ == '__main__':
    main()

下面是运行效果：



鼠标或键盘箭头移动到所要查看的命令，回车即可在右恻查看命 令帮助文档。

搜索框内可直接输入要查询的命令，回车或点击搜索图标均可。

如果要添加新的命令文档，可以向指定目录里放入txt格式文件即可。

左边是一个frame，由一个scrollbar和listbox组成， 右上边的搜索框也是一个由entry和button组成的frame，下面是text控件，用来显示相应listbox上的文件信息。

不足之处请指出，谢谢！