Much more up to date Demo of Autocomplete. Based on program by @bonklers
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PySimpleGUI
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import PySimpleGUI as sg
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import re
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'''
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Demo of using a borderless window to show possible matches for autocomplete feature
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'''
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"""
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Autocomplete input
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Thank you to GitHub user bonklers for supplying to basis for this demo!
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There are 3 keyboard characters to be aware of:
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* Arrow up - Change selected item in list
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* Arrow down - Change selected item in list
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* Escape - Erase the input and start over
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* Return/Enter - use the current item selected from the list
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def autocomplete_popup_show(text_list):
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layout = [[ sg.Listbox(values=text_list,
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size=(15, len(text_list)),
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change_submits=True, bind_return_key=True,
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key='-FLOATING-LISTBOX-', enable_events=True) ]]
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return sg.Window("Borderless Window",
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layout,
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default_element_size=(12, 1),
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auto_size_text=False, keep_on_top=True,
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no_titlebar=True, grab_anywhere=True,
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return_keyboard_events=True,
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auto_size_buttons=False,
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background_color='black',
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default_button_element_size=(12, 1),
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location=(1320, 622), finalize=True)
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You can easily remove the ignore case option by searching for the "Irnore Case" Check box key:
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'-IGNORE CASE-'
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def predict_text(input, lista):
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pattern = re.compile('.*' + input + '.*')
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return [w for w in lista if re.match(pattern, w)]
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The variable "choices" holds the list of strings your program will match against.
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Even though the listbox of choices doesn't have a scrollbar visible, the list is longer than shown
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and using your keyboard more of it will br shown as you scroll down with the arrow keys
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The selection wraps around from the end to the start (and vicea versa). You can change this behavior to
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make it stay at the beignning or the end
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Copyright 2021 PySimpleGUI
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"""
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def main():
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# The list of choices that are going to be searched
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# In this example, the PySimpleGUI Element names are used
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choices = sorted([elem.__name__ for elem in sg.Element.__subclasses__()])
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choices = ['ABC' + str(i) for i in range(30)] # dummy data
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input_width = 20
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num_items_to_show = 4
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layout = [[sg.Text('Your typed chars appear here:')],
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[sg.Input(key='-INPUT-', size=(10, 1))],
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[sg.Button('Show'), sg.Button('Exit')], ]
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layout = [
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[sg.CB('Ignore Case', k='-IGNORE CASE-')],
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[sg.Text('Input PySimpleGUI Element Name:')],
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[sg.Input(size=(input_width, 1), enable_events=True, key='-IN-')],
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[sg.pin(sg.Col([[sg.Listbox(values=[], size=(input_width, num_items_to_show), enable_events=True, key='-BOX-',
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select_mode=sg.LISTBOX_SELECT_MODE_SINGLE, no_scrollbar=True)]],
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key='-BOX-CONTAINER-', pad=(0, 0), visible=False))]
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]
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window = sg.Window('Autocomplete Demo', layout, return_keyboard_events=True)
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window = sg.Window('AutoComplete', layout, return_keyboard_events=True, finalize=True, font= ('Helvetica', 16))
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sel_item = -1
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fwindow = list_elem = values2 = None
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while True: # Event Loop
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event, values = window.read(timeout=500)
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list_element:sg.Listbox = window.Element('-BOX-') # store listbox element for easier access and to get to docstrings
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prediction_list, input_text, sel_item = [], "", 0
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if event in (sg.WIN_CLOSED, 'Exit'):
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while True: # Event Loop
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event, values = window.read()
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# print(event, values)
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if event == sg.WINDOW_CLOSED:
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break
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# pressing down arrow will trigger event -IN- then aftewards event Down:40
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elif event.startswith('Escape'):
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window['-IN-'].update('')
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window['-BOX-CONTAINER-'].update(visible=False)
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elif event.startswith('Down') and len(prediction_list):
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sel_item = (sel_item + 1) % len(prediction_list)
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list_element.update(set_to_index=sel_item, scroll_to_index=sel_item)
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elif event.startswith('Up') and len(prediction_list):
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sel_item = (sel_item + (len(prediction_list) - 1)) % len(prediction_list)
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list_element.update(set_to_index=sel_item, scroll_to_index=sel_item)
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elif event == '\r':
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if len(values['-BOX-']) > 0:
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window['-IN-'].update(value=values['-BOX-'])
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window['-BOX-CONTAINER-'].update(visible=False)
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elif event == '-IN-':
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text = values['-IN-'] if not values['-IGNORE CASE-'] else values['-IN-'].lower()
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if text == input_text:
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continue
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else:
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input_text = text
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prediction_list = []
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if text:
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if values['-IGNORE CASE-']:
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prediction_list = [item for item in choices if item.lower().startswith(text)]
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else:
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prediction_list = [item for item in choices if item.startswith(text)]
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if event != sg.TIMEOUT_KEY:
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# print(f'event1 {event}')
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in_val = values['-INPUT-']
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prediction_list = predict_text(str(in_val), choices)
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if prediction_list:
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try:
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fwindow.close()
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except:
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pass
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fwindow = autocomplete_popup_show(prediction_list)
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list_elem = fwindow['-FLOATING-LISTBOX-']
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if event == '_COMBO_':
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sg.popup('Chose', values['_COMBO_'])
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list_element.update(values=prediction_list)
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sel_item = 0
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list_element.update(set_to_index=sel_item)
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if event.startswith('Down') or event.startswith('special 16777237'):
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sel_item = sel_item + (sel_item < len(prediction_list))
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list_elem.update(set_to_index=sel_item)
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elif event.startswith('Up') or event.startswith('special 16777235'):
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sel_item = sel_item - (sel_item > 0)
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list_elem.update(set_to_index=sel_item)
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if event == '\r' or event.startswith('special 16777220'):
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chosen = values2['-FLOATING-LISTBOX-'] if values2 is not None else None
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if chosen:
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window['-INPUT-'].update(chosen[0], select=True)
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fwindow.close()
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sel_item = -1
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if event.startswith('Escape') or event.startswith('special 16777216'):
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window['-INPUT-'].update('')
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try:
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event2, values2 = fwindow.read(timeout=10)
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# if event2 == '-FLOATING-LISTBOX-' and skip_event and QT:
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# skip_event = False
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if event2 != sg.TIMEOUT_KEY and event2 is not None:
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# print(f'event2 {event2}')
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fwindow.close()
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window['-INPUT-'].update(values2['-FLOATING-LISTBOX-']
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[0], select=True)
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sel_item = -1
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fwindow = None
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except:
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pass
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if len(prediction_list) > 0:
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window['-BOX-CONTAINER-'].update(visible=True)
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else:
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window['-BOX-CONTAINER-'].update(visible=False)
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elif event == '-BOX-':
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window['-IN-'].update(value=values['-BOX-'])
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window['-BOX-CONTAINER-'].update(visible=False)
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window.close()
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if __name__ == '__main__':
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main()
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