A mini-excel table. Uses arrow keys to navigate. Can click header to sort by column

DemoPrograms/Demo_Table_Simulation_Arrow_Keys.py

@@ -1,44 +1,66 @@
-import PySimpleGUIWeb as sg
+import PySimpleGUI as sg
 from random import randint
+import operator
 
 """
     Another simple table created from Input Text Elements.  This demo adds the ability to "navigate" around the drawing using
     the arrow keys. The tab key works automatically, but the arrow keys are done in the code below.
 """
 
-sg.change_look_and_feel('Light green 5')     # No excuse for gray windows
+sg.change_look_and_feel('Dark Brown 2')  # No excuse for gray windows
+# Show a "splash" type message so the user doesn't give up waiting
+sg.popup_quick_message('Hang on for a moment, this will take a bit to create....', auto_close=True, non_blocking=True)
 
-MAX_COLS = MAX_ROWS = 5
-# Create an Excel style window layout quickly and easily using list comprehensions
-layout =  [[sg.Text(' '*11)]+[sg.Text(s+ ' '*19) for s in 'ABCDE'] ] + \
-          [[sg.T(r)] + [sg.Input(randint(0,100), justification='r', key=(r,c)) for c in range(MAX_COLS)] for r in range(MAX_ROWS)] + \
-          [[sg.Button('Table Values'), sg.Button('Exit')]]
+MAX_ROWS, MAX_COLS, COL_HEADINGS = 15, 6, ('A', 'B', 'C', 'D', 'E', 'F',)
 
-# Create the window and show it
-window = sg.Window('A Table Simulation', layout, default_element_size=(12,1), element_padding=(1,1), return_keyboard_events=True)
-current_cell = (0,0)
-while True:             # Event Loop
+# A HIGHLY unusual layout definition
+# Normally a layout is specified 1 ROW at a time. Here multiple rows are being contatenated together to produce the layout
+# Note the " + \ " at the ends of the lines rather than the usual " , "
+# This is done because each line is a list of lists
+layout = [[sg.Text('Click on a column header to sort by that column', font='Default 16')]] + \
+         [[sg.Text(' ' * 15)] + [sg.Text(s, key=s, enable_events=True, font='Courier 14', size=(8, 1)) for i, s in enumerate(COL_HEADINGS)]] + \
+         [[sg.T(r, size=(4, 1))] + [sg.Input(randint(0, 100), justification='r', key=(r, c)) for c in range(MAX_COLS)] for r in range(MAX_ROWS)] + \
+         [[sg.Button('Show Table As Lists'), sg.Button('Exit')]]
+
+# Create the window
+window = sg.Window('A Table Simulation', layout, default_element_size=(12, 1), element_padding=(1, 1), return_keyboard_events=True)
+
+current_cell = (0, 0)
+while True:  # Event Loop
     event, values = window.read()
-    if event in (None, 'Exit'):         # If user closed the window
+    if event in (None, 'Exit'):     # If user closed the window
         break
     elem = window.find_element_with_focus()
-    current_cell = elem.Key if elem else (0,0)
-    r,c = current_cell
-    # Process arrow keys
+    current_cell = elem.Key if elem and type(elem.Key) is tuple else (0, 0)
+    r, c = current_cell
+
     if event.startswith('Down'):
-        r = r + 1 * (r < MAX_ROWS-1)
-    if event.startswith('Left'):
-        c = c - 1 *(c > 0)
-    if event.startswith('Right'):
-        c = c + 1 *(c < MAX_COLS-1)
-    if event.startswith('Up'):
+        r = r + 1 * (r < MAX_ROWS - 1)
+    elif event.startswith('Left'):
+        c = c - 1 * (c > 0)
+    elif event.startswith('Right'):
+        c = c + 1 * (c < MAX_COLS - 1)
+    elif event.startswith('Up'):
         r = r - 1 * (r > 0)
+    elif event in COL_HEADINGS:         # Perform a sort if a column heading was clicked
+        col_clicked = COL_HEADINGS.index(event)
+        try:
+            table = [[int(values[(row, col)]) for col in range(MAX_COLS)] for row in range(MAX_ROWS)]
+            new_table = sorted(table, key=operator.itemgetter(col_clicked))
+        except:
+            sg.popup_error('Error in table', 'Your table must contain only ints if you wish to sort by column')
+        else:
+            for i in range(MAX_ROWS):
+                for j in range(MAX_COLS):
+                    window[(i, j)].update(new_table[i][j])
+            [window[c].update(font='Any 14') for c in COL_HEADINGS]     # make all column headings be normal fonts
+            window[event].update(font='Any 14 bold')                    # bold the font that was clicked
     # if the current cell changed, set focus on new cell
-    if current_cell != (r,c):
-      current_cell = r,c
-      window[current_cell].set_focus()              # set the focus on the element moved to
-      window[current_cell].update(select=True)      # when setting focus, also highlight the data in the element so typing overwrites
+    if current_cell != (r, c):
+        current_cell = r, c
+        window[current_cell].set_focus()          # set the focus on the element moved to
+        window[current_cell].update(select=True)  # when setting focus, also highlight the data in the element so typing overwrites
     # if clicked button to dump the table's values
-    if event == 'Table Values':
-      table = [[values[(row,col)] for col in range(MAX_COLS)] for row in range(MAX_ROWS)]
-      print(f'table = {table}')
+    if event.startswith('Show Table'):
+        table = [[values[(row, col)] for col in range(MAX_COLS)] for row in range(MAX_ROWS)]
+        sg.popup_scrolled('your_table = [ ', ',\n'.join([str(table[i]) for i in range(MAX_ROWS)]) + '  ]', title='Copy your data from here')