New HowDoI standalone application

HowDoI/PySimpleGUI-HowDoI.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python
+import sys
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+import subprocess
+
+
+# Test this command in a dos window if you are having trouble.
+HOW_DO_I_COMMAND =  'python -m howdoi.howdoi'
+
+# if you want an icon on your taskbar for this gui, then change this line of code to point to the ICO file
+DEFAULT_ICON = './QuestionMark.ico'
+
+def HowDoI():
+    '''
+    Make and show a window (PySimpleGUI form) that takes user input and sends to the HowDoI web oracle
+    Excellent example of 2 GUI concepts
+        1. Output Element that will show text in a scrolled window
+        2. Non-Window-Closing Buttons - These buttons will cause the form to return with the form's values, but doesn't close the form
+    :return: never returns
+    '''
+    # -------  Make a new Window  ------- #
+    sg.ChangeLookAndFeel('GreenTan')            # give our form a spiffy set of colors
+
+    layout =  [
+                [sg.Text('Ask and your answer will appear here....', size=(40, 1))],
+                [sg.Output(size=(127, 30), font=('Helvetica 10'))],
+                [ sg.Spin(values=(1, 2, 3, 4), initial_value=1, size=(2, 1), key='Num Answers', font='Helvetica 15'),
+                  sg.Text('Num Answers',font='Helvetica 15'), sg.Checkbox('Display Full Text', key='full text', font='Helvetica 15'),
+                sg.T('Command History', font='Helvetica 15'), sg.T('', size=(40,3), text_color=sg.BLUES[0], key='history')],
+                [sg.Multiline(size=(85, 5), enter_submits=True, key='query', do_not_clear=False),
+                sg.ReadButton('SEND', button_color=(sg.YELLOWS[0], sg.BLUES[0]), bind_return_key=True),
+                sg.Button('EXIT', button_color=(sg.YELLOWS[0], sg.GREENS[0]))]
+              ]
+
+    window = sg.Window('How Do I ??',
+                       default_element_size=(30, 2),
+                       font=('Helvetica',' 13'),
+                       default_button_element_size=(8,2),
+                       icon=DEFAULT_ICON,
+                       return_keyboard_events=True).Layout(layout)
+
+    # ---===--- Loop taking in user input and using it to query HowDoI --- #
+    command_history = []
+    history_offset = 0
+    while True:
+        (button, value) = window.Read()
+        if button is 'SEND':
+            query = value['query'].rstrip()
+            print(query)
+            QueryHowDoI(query, value['Num Answers'], value['full text'])  # send the string to HowDoI
+            command_history.append(query)
+            history_offset = len(command_history)-1
+            window.FindElement('query').Update('')                       # manually clear input because keyboard events blocks clear
+            window.FindElement('history').Update('\n'.join(command_history[-3:]))
+        elif button is None or button is 'EXIT':            # if exit button or closed using X
+            break
+        elif 'Up' in button and len(command_history):                                # scroll back in history
+            command = command_history[history_offset]
+            history_offset -= 1 * (history_offset > 0)      # decrement is not zero
+            window.FindElement('query').Update(command)
+        elif 'Down' in button and len(command_history):                              # scroll forward in history
+            history_offset += 1 * (history_offset < len(command_history)-1) # increment up to end of list
+            command = command_history[history_offset]
+            window.FindElement('query').Update(command)
+        elif 'Escape' in button:                            # clear currently line
+            window.FindElement('query').Update('')
+
+
+def QueryHowDoI(Query, num_answers, full_text):
+    '''
+    Kicks off a subprocess to send the 'Query' to HowDoI
+    Prints the result, which in this program will route to a gooeyGUI window
+    :param Query: text english question to ask the HowDoI web engine
+    :return: nothing
+    '''
+    howdoi_command = HOW_DO_I_COMMAND
+    full_text_option = ' -a' if full_text else ''
+    t = subprocess.Popen(howdoi_command + ' \"'+ Query + '\" -n ' + str(num_answers)+full_text_option, stdout=subprocess.PIPE)
+    (output, err) = t.communicate()
+    print('{:^88}'.format(Query.rstrip()))
+    print('_'*60)
+    print(output.decode("utf-8") )
+    exit_code = t.wait()
+
+if __name__ == '__main__':
+    HowDoI()
+