add key bindings for scrolling

xerus/__main__.py

@@ -1,11 +1,13 @@
 # -*- coding:utf-8 -*-
 
+import tkinter
 from .gui import NoteViewer
 from .data import Notes
 
 # Load notes
 notes = Notes("testdata")
 # View them
-viewer = NoteViewer(notes)
+root = tkinter.Tk()
+viewer = NoteViewer(notes, master=root)
 viewer.run()
 

xerus/data.py

@@ -68,9 +68,10 @@ class Notes(dict):
     def load(self, source):
         if source is "testdata":
             for note in extract_test():
-                self.insert(note.person, note.category, note.date, (note.time, note.text))
+                self.insert(note.person, note.category, note.date
+                            , time=note.time, text=note.text)
 
-    def insert(self, person, category, date, note):
+    def insert(self, person, category, date, time=None, author=None, text=None):
         """ Inserts a new note """
         # Track existing categories
         if not category in self.categories:
@@ -81,6 +82,7 @@ class Notes(dict):
         if not category in self[person]:
             self[person][category] = {}
         # Insertion
+        note = (time, text)
         if not date in self[person][category]:
             self[person][category][date] = [note]
         else:

xerus/gui.py

@@ -30,9 +30,23 @@ class NoteViewer(tk.Frame):
         self.notes = notes
 
     def run(self):
-        """ Launch the viewer """
+        """ Configure and launch the viewer """
+
+        # Events
+        def scroll_down(event):
+            self.text.yview_scroll(1, "units")
+
+        def scroll_up(event):
+            self.text.yview_scroll(-1, "units")
+
+        self.bind_all("<Down>", scroll_down) 
+        self.bind_all("j", scroll_down)
+        self.bind_all("<Up>", scroll_up)
+        self.bind_all("k", scroll_up)
+        # Enter loop
         self.mainloop()
 
+
     @property
     def notes(self):
         return self.__notes
@@ -49,6 +63,7 @@ class NoteViewer(tk.Frame):
         self.refresh_text(None)
 
     def refresh_text(self, event):
+        print("Refresh text :", event)
         self.text.config(state=tk.NORMAL)
         self.text.delete(1.0, tk.END)
         try:
@@ -103,13 +118,13 @@ class NoteViewer(tk.Frame):
         # Text view
         textView = tk.Frame(self)
         textView.pack(fill=tk.BOTH, expand=True)
-        scrollbar = tk.Scrollbar(textView)
+        self.scrollbar = tk.Scrollbar(textView)
-        scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
+        self.scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
-        self.text = tk.Text(textView, yscrollcommand=scrollbar.set)
+        self.text = tk.Text(textView, yscrollcommand=self.scrollbar.set)
         self.text.tag_config("d", underline=1)  # Dates
         self.text.tag_config("t", foreground="grey")  # Times
         self.text.pack(fill=tk.BOTH, expand=True)
-        scrollbar.config(command=self.text.yview)
+        self.scrollbar.config(command=self.text.yview)