Added Sales-and-Order-Management-System by Biswajit-Behera for issue #1644

Author: Biswajit Behera

Sales-and-Order-Management-System/.gitignore

@@ -0,0 +1,9 @@
+#Pycache
+**/.pyc
+**/__pycache__/**
+
+# Vscode
+.code
+
+#Pycharm
+.idea

Sales-and-Order-Management-System/Addtional_features.py

@@ -0,0 +1,107 @@
+import tkinter
+import tkinter.ttk
+
+tkinter_umlauts=['odiaeresis', 'adiaeresis', 'udiaeresis', 'Odiaeresis', 'Adiaeresis', 'Udiaeresis', 'ssharp']
+class myentry(tkinter.Entry):
+        def set_completion_list(self, completion_list):
+                self._completion_list = sorted(completion_list, key=str.lower)
+                self._hits = []
+                self._hit_index = 0
+                self.position = 0
+                self.bind('<KeyRelease>', self.handle_keyrelease)
+
+        def autocomplete(self, delta=0):
+                if delta:
+                        self.delete(self.position, tkinter.END)
+                else:
+                        self.position = len(self.get())
+                _hits = []
+                for element in self._completion_list:
+                        if element.lower().startswith(self.get().lower()):
+                                _hits.append(element)
+                if _hits != self._hits:
+                        self._hit_index = 0
+                        self._hits=_hits
+                if _hits == self._hits and self._hits:
+                        self._hit_index = (self._hit_index + delta) % len(self._hits)
+                if self._hits:
+                        self.delete(0,tkinter.END)
+                        self.insert(0,self._hits[self._hit_index])
+                        self.select_range(self.position,tkinter.END)
+
+        def handle_keyrelease(self, event):
+                if event.keysym == "BackSpace":
+                        self.delete(self.index(tkinter.INSERT), tkinter.END)
+                        self.position = self.index(tkinter.END)
+                if event.keysym == "Left":
+                        if self.position < self.index(tkinter.END):
+                                self.delete(self.position, tkinter.END)
+                        else:
+                                self.position = self.position-1
+                                self.delete(self.position, tkinter.END)
+                if event.keysym == "Right":
+                        self.position = self.index(tkinter.END)
+                if event.keysym == "Down":
+                        self.autocomplete(1)
+                if event.keysym == "Up":
+                        self.autocomplete(-1)
+                if len(event.keysym) == 1 or event.keysym in tkinter_umlauts:
+                        self.autocomplete()
+
+class  mycombobox(tkinter.ttk.Combobox):
+
+        def set_completion_list(self, completion_list):
+                self._completion_list = sorted(completion_list, key=str.lower)
+                self._hits = []
+                self._hit_index = 0
+                self.position = 0
+                self.bind('<KeyRelease>', self.handle_keyrelease)
+                self['values'] = self._completion_list
+
+        def autocomplete(self, delta=0):
+                if delta:
+                        self.delete(self.position, tkinter.END)
+                else:
+                        self.position = len(self.get())
+                _hits = []
+                for element in self._completion_list:
+                        if element.lower().startswith(self.get().lower()): # Match case insensitively
+                                _hits.append(element)
+                if _hits != self._hits:
+                        self._hit_index = 0
+                        self._hits=_hits
+                if _hits == self._hits and self._hits:
+                        self._hit_index = (self._hit_index + delta) % len(self._hits)
+                if self._hits:
+                        self.delete(0,tkinter.END)
+                        self.insert(0,self._hits[self._hit_index])
+                        self.select_range(self.position,tkinter.END)
+
+        def handle_keyrelease(self, event):
+                if event.keysym == "BackSpace":
+                        self.delete(self.index(tkinter.INSERT), tkinter.END)
+                        self.position = self.index(tkinter.END)
+                if event.keysym == "Left":
+                        if self.position < self.index(tkinter.END):
+                                self.delete(self.position, tkinter.END)
+                        else:
+                                self.position = self.position-1
+                                self.delete(self.position, tkinter.END)
+                if event.keysym == "Right":
+                        self.position = self.index(tkinter.END)
+                if len(event.keysym) == 1:
+                        self.autocomplete()
+# TEST THIS
+def test(test_list):
+        root = tkinter.Tk(className=' AutocompleteEntry demo')
+        entry = myentry(root)
+        entry.set_completion_list(test_list)
+        entry.pack()
+        entry.focus_set()
+        combo = mycombobox(root)
+        combo.set_completion_list(test_list)
+        combo.pack()
+        combo.focus_set()
+        root.bind('<Control-Q>', lambda event=None: root.destroy())
+        root.bind('<Control-q>', lambda event=None: root.destroy())
+        root.mainloop()