New Floating Window demo - auto complete of input field

DemoPrograms/Demo_Input_Auto_Complete.py

@@ -0,0 +1,95 @@
+import sys
+import re
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+
+
+
+
+def autocomplete_popup_show(text_list ):
+    autocomplete_popup_layout = [[sg.Listbox(values=text_list,
+                                             size=(15,len(text_list)),
+                                             change_submits=True,
+                                             bind_return_key=True,
+                                             auto_size_text=True,
+                                             key='_FLOATING_LISTBOX_', enable_events=True)]]
+
+    autocomplete_popup = sg.Window("Borderless Window",
+                                   default_element_size=(12, 1),
+                                   text_justification='c',
+                                   auto_size_text=False,
+                                   auto_size_buttons=False,
+                                   no_titlebar=True,
+                                   grab_anywhere=True,
+                                   return_keyboard_events=True,
+                                   keep_on_top=True,
+                                   background_color='black',
+                                   location=(1320,622),
+                                   default_button_element_size=(12, 1))
+
+    window = autocomplete_popup.Layout(autocomplete_popup_layout).Finalize()
+    return window
+
+
+
+def predict_text(input, lista):
+    pattern = re.compile('.*' + input + '.*')
+    return [w for w in lista if re.match(pattern, w)]
+
+# print(predict_text('1', ['123']))
+choices = ['ABC' + str(i) for i in range(30)]
+# print(predict_text('1', values))
+# print(values)
+layout = [  [sg.Text('Your typed chars appear here:')],
+            [sg.In(key='_INPUT_', size=(10,1), do_not_clear=True),sg.Text('', key='_OUTPUT_')],
+            [sg.Button('Show'), sg.Button('Exit')],
+         ]
+
+window = sg.Window('Window Title', return_keyboard_events=True).Layout(layout)
+
+
+sel_item = -1
+while True:             # Event Loop
+    event, values = window.Read(timeout=1000)
+    if event is None or event == 'Exit':
+        break
+    if event != sg.TIMEOUT_KEY:
+        in_val = values['_INPUT_']
+        prediction_list = predict_text(str(in_val), choices)
+        if prediction_list:
+            try:
+                fwindow.Close()
+            except: pass
+            fwindow = autocomplete_popup_show(prediction_list)
+            list_elem = fwindow.Element('_FLOATING_LISTBOX_')
+
+            window.Element('_OUTPUT_').Update(prediction_list[0])
+
+        if event == '_COMBO_':
+            sg.Popup('Chose', values['_COMBO_'])
+        if event == 'Down:40':
+            sel_item = sel_item + (sel_item<len(prediction_list))
+            list_elem.Update(set_to_index=sel_item)
+        elif event == 'Up:38':
+            sel_item = sel_item - (sel_item>0)
+            list_elem.Update(set_to_index=sel_item)
+        if event == '\r' or event == 'Show':
+            chosen = vals2['_FLOATING_LISTBOX_']
+            window.Element('_INPUT_').Update(vals2['_FLOATING_LISTBOX_'], select=True)
+            fwindow.Close()
+            sel_item = -1
+        if event == 'Escape:27':
+            window.Element('_INPUT_').Update('')
+
+    try:
+        ev2, vals2 = fwindow.Read(timeout=10)
+        if ev2 != sg.TIMEOUT_KEY:
+            fwindow.Close()
+            # sg.Popup('Chose from window', vals2['_FLOATING_LISTBOX_'])
+            window.Element('_INPUT_').Update(vals2['_FLOATING_LISTBOX_'], select=True)
+            sel_item = -1
+
+    except: pass
+window.Close()