mirror of
https://github.com/naruxde/revpipycontrol.git
synced 2025-11-09 07:58:03 +01:00
Connection Fenster hinzugef?gt
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210
revpipycontrol/revpiplclist.py
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210
revpipycontrol/revpiplclist.py
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#
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# RevPiPyControl
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#
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# Webpage: https://revpimodio.org/revpipyplc/
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# (c) Sven Sager, License: LGPLv3
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#
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# -*- coding: utf-8 -*-
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import os.path
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import pickle
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import tkinter
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import tkinter.messagebox as tkmsg
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from os import environ
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from os import makedirs
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from sys import platform
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# Systemwerte
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if platform == "linux":
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homedir = environ["HOME"]
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else:
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homedir = environ["APPDATA"]
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savefile = os.path.join(homedir, ".revpipyplc", "connections.dat")
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def get_connections():
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if os.path.exists(savefile):
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fh = open(savefile, "rb")
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connections = pickle.load(fh)
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return connections
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class RevPiPlcList(tkinter.Frame):
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def __init__(self, master):
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super().__init__(master)
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self.pack()
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# Daten laden
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self._connections = {}
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# Fenster bauen
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self._createwidgets()
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self._loadappdata()
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def _createwidgets(self):
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self.master.wm_title("RevPi Python PLC Connections")
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self.master.wm_resizable(width=False, height=False)
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# Listbox mit vorhandenen Verbindungen
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self.scr_conn = tkinter.Scrollbar(self)
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self.scr_conn.grid(column=1, row=0, rowspan=10, sticky="ns")
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self.list_conn = tkinter.Listbox(self, width=20, heigh=15)
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self.list_conn.bind("<<ListboxSelect>>", self.evt_listconn)
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self.list_conn.grid(column=0, row=0, rowspan=10)
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self.list_conn["yscrollcommand"] = self.scr_conn.set
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self.scr_conn["command"] = self.list_conn.yview
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# Variablen und Defaultwerte
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self.var_address = tkinter.StringVar(self)
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self.var_port = tkinter.StringVar(self)
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self.var_name = tkinter.StringVar(self)
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self.var_port.set("55123")
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# Eingabefelder für Adresse und Namen
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tkinter.Label(self, text="Name").grid(
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column=2, row=0, sticky="wn", padx=5, pady=5)
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self.txt_name = tkinter.Entry(self, textvariable=self.var_name)
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self.txt_name.bind("<KeyRelease>", self.evt_keypress)
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self.txt_name.grid(
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column=3, row=0, columnspan=3, sticky="n", padx=5, pady=5)
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tkinter.Label(self, text="IP-Adresse").grid(
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column=2, row=1, sticky="wn", padx=5, pady=5
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)
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self.txt_address = tkinter.Entry(self, textvariable=self.var_address)
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self.txt_address.bind("<KeyRelease>", self.evt_keypress)
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self.txt_address.grid(
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column=3, row=1, columnspan=3, sticky="n", padx=5, pady=5)
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tkinter.Label(self, text="Port").grid(
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column=2, row=2, sticky="wn", padx=5, pady=5)
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self.txt_port = tkinter.Entry(self, textvariable=self.var_port)
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self.txt_port.bind("<KeyRelease>", self.evt_keypress)
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self.txt_port.grid(
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column=3, row=2, columnspan=3, sticky="n", padx=5, pady=5)
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# Listenbutton
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self.btn_new = tkinter.Button(
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self, text="Neu", command=self.evt_btnnew)
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self.btn_new.grid(column=2, row=3, sticky="s")
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self.btn_add = tkinter.Button(
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self, text="Übernehmen", command=self.evt_btnadd, state="disabled")
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self.btn_add.grid(column=3, row=3, sticky="s")
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self.btn_remove = tkinter.Button(
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self, text="Entfernen", command=self.evt_btnremove, state="disabled")
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self.btn_remove.grid(column=4, row=3, sticky="s")
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# Fensterbuttons
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self.btn_save = tkinter.Button(
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self, text="Speichern", command=self.evt_btnsave)
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self.btn_save.grid(column=3, row=9, sticky="se")
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self.btn_close = tkinter.Button(
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self, text="Schließen", command=self.evt_btnclose)
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self.btn_close.grid(column=4, row=9, sticky="se")
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def _loadappdata(self):
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if os.path.exists(savefile):
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fh = open(savefile, "rb")
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self._connections = pickle.load(fh)
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self.build_listconn()
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def _saveappdata(self):
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try:
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makedirs(os.path.dirname(savefile), exist_ok=True)
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fh = open(savefile, "wb")
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pickle.dump(self._connections, fh)
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except:
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return False
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return True
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def build_listconn(self):
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self.list_conn.delete(0, "end")
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lst_conns = sorted(self._connections.keys(), key=lambda x: x.lower())
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self.list_conn.insert("end",*lst_conns)
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def evt_btnadd(self):
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# TODO: Daten prüfen
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self._connections[self.var_name.get()] = \
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(self.var_address.get(), self.var_port.get())
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self.build_listconn()
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self.evt_btnnew()
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def evt_btnclose(self):
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ask = tkmsg.askyesno(
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"Frage...",
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"Wollen Sie wirklich beenden?\n"
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"Nicht gespeicherte Änderungen gehen verloren",
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parent=self.master
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)
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if ask:
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self.master.destroy()
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def evt_btnnew(self):
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self.list_conn.select_clear(0, "end")
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self.evt_listconn()
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self.btn_add["state"] = "disabled"
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self.var_address.set("")
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self.var_name.set("")
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self.var_port.set("55123")
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def evt_btnremove(self):
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item_index = self.list_conn.curselection()
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if len(item_index) == 1:
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item = self.list_conn.get(item_index[0])
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ask = tkmsg.askyesno(
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"Frage",
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"Wollen Sie die Ausgewählte Verbindung '{}' wirklich "
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"löschen?".format(item),
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parent=self.master
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)
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if ask:
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# Daten löschen
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del self._connections[item]
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self.build_listconn()
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self.evt_btnnew()
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def evt_btnsave(self):
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if self._saveappdata():
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ask = tkmsg.askyesno(
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"Information", "Verbindungen erfolgreich gespeichert.\n"
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"Möchten Sie dieses Fenster jetzt schließen?",
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parent=self.master
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)
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if ask:
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self.master.destroy()
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else:
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tkmsg.showerror(
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"Fehler", "Verbindungen konnten nicht gespeichert werden",
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parent=self.master
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)
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def evt_listconn(self, evt=None):
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item_index = self.list_conn.curselection()
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if len(item_index) == 1:
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# Daten lesen
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item = self.list_conn.get(item_index[0])
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self.var_name.set(item)
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self.var_address.set(self._connections[item][0])
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self.var_port.set(self._connections[item][1])
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self.btn_add["state"] == "normal"
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self.btn_remove["state"] = "normal"
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else:
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self.btn_remove["state"] = "disabled"
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def evt_keypress(self, evt=None):
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okvalue = "normal" if (self.var_address.get() != ""
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and self.var_name.get() != ""
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and self.var_port.get() != ""
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) else "disabled"
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self.btn_add["state"] = okvalue
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if __name__ == "__main__":
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root = tkinter.Tk()
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myapp = RevPiPlcList(root)
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myapp.mainloop()
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