feat: generic prompts

Works on all three UIs offers a generic function to ask a question that platform independent.
If the user fails to offer a response, the installer will terminate.

In the GUI this still works, however it may not be desireable to prompt the user for each question.
So long as we don't attempt to access the variable before the user has had a chance to put in their preferences it will not prompt them
Changed the GUI to gray out the other widgets if the product is not selected.
start_ensure_config is called AFTER product is set, if it's called before it attempts to figure out which platform it's on, prompting the user with an additional dialog (not ideal, but acceptable)

ou_dedetai/app.py

@@ -0,0 +1,59 @@
+import abc
+from typing import Optional
+
+from ou_dedetai import config
+
+
+class App(abc.ABC):
+    def __init__(self, **kwargs) -> None:
+        self.conf = Config(self)
+
+    def ask(self, question: str, options: list[str]) -> str:
+        """Askes the user a question with a list of supplied options
+
+        Returns the option the user picked.
+
+        If the internal ask function returns None, the process will exit with an error code 1
+        """
+        if options is not None and self._exit_option is not None:
+            options += [self._exit_option]
+        answer = self._ask(question, options)
+        if answer == self._exit_option:
+            answer = None
+
+        if answer is None:
+            exit(1)
+
+        return answer
+
+    _exit_option: Optional[str] = "Exit"
+
+    @abc.abstractmethod
+    def _ask(self, question: str, options: list[str] = None) -> Optional[str]:
+        """Implementation for asking a question pre-front end
+
+        If you would otherwise return None, consider shutting down cleanly,
+        the calling function will exit the process with an error code of one
+        if this function returns None
+        """
+        raise NotImplementedError()
+
+    def _hook_product_update(self, product: Optional[str]):
+        """A hook for any changes the individual apps want to do when a platform changes"""
+        pass
+
+class Config:
+    def __init__(self, app: App) -> None:
+        self.app = app
+
+    @property
+    def faithlife_product(self) -> str:
+        """Wrapper function that ensures that ensures the product is set
+        
+        if it's not then the user is prompted to choose one."""
+        if not config.FLPRODUCT:
+            question = "Choose which FaithLife product the script should install: "  # noqa: E501
+            options = ["Logos", "Verbum"]
+            config.FLPRODUCT = self.app.ask(question, options)
+            self.app._hook_product_update(config.FLPRODUCT)
+        return config.FLPRODUCT

ou_dedetai/cli.py

@@ -1,5 +1,8 @@
 import queue
 import threading
+from typing import Optional
+
+from ou_dedetai.app import App
 
 from . import control
 from . import installer
@@ -8,8 +11,9 @@
 from . import utils
 
 
-class CLI:
+class CLI(App):
     def __init__(self):
+        super().__init__()
         self.running = True
         self.choice_q = queue.Queue()
         self.input_q = queue.Queue()
@@ -88,6 +92,20 @@ def winetricks(self):
         import config
         wine.run_winetricks_cmd(*config.winetricks_args)
 
+    _exit_option: str = "Exit"
+
+    def _ask(self, question: str, options: list[str]) -> str:
+        """Passes the user input to the user_input_processor thread
+        
+        The user_input_processor is running on the thread that the user's stdin/stdout is attached to
+        This function is being called from another thread so we need to pass the information between threads using a queue/event
+        """
+        self.input_q.put((question, options))
+        self.input_event.set()
+        self.choice_event.wait()
+        self.choice_event.clear()
+        return self.choice_q.get()
+
     def user_input_processor(self, evt=None):
         while self.running:
             prompt = None
@@ -111,7 +129,7 @@ def user_input_processor(self, evt=None):
                 choice = input(f"{question}: {optstr}: ")
                 if len(choice) == 0:
                     choice = default
-            if choice is not None and choice.lower() == 'exit':
+            if choice is not None and choice == self._exit_option:
                 self.running = False
             if choice is not None:
                 self.choice_q.put(choice)

ou_dedetai/gui.py

@@ -18,6 +18,37 @@
 from . import utils
 
 
+class ChoiceGui(Frame):
+    _default_prompt: str = "Choose…"
+
+    def __init__(self, root, question: str, options: list[str], **kwargs):
+        super(ChoiceGui, self).__init__(root, **kwargs)
+        self.italic = font.Font(slant='italic')
+        self.config(padding=5)
+        self.grid(row=0, column=0, sticky='nwes')
+
+        # Label Row
+        self.question_label = Label(self, text=question)
+        # drop-down menu
+        self.answer_var = StringVar(value=self._default_prompt)
+        self.answer_dropdown = Combobox(self, textvariable=self.answer_var)
+        self.answer_dropdown['values'] = options
+        if len(options) > 0:
+            self.answer_dropdown.set(options[0])
+
+        # Cancel/Okay buttons row.
+        self.cancel_button = Button(self, text="Cancel")
+        self.okay_button = Button(self, text="Confirm")
+
+        # Place widgets.
+        row = 0
+        self.question_label.grid(column=0, row=row, sticky='nws', pady=2)
+        self.answer_dropdown.grid(column=1, row=row, sticky='w', pady=2)
+        row += 1
+        self.cancel_button.grid(column=3, row=row, sticky='e', pady=2)
+        self.okay_button.grid(column=4, row=row, sticky='e', pady=2)
+
+
 class InstallerGui(Frame):
     def __init__(self, root, **kwargs):
         super(InstallerGui, self).__init__(root, **kwargs)

ou_dedetai/gui_app.py

@@ -7,11 +7,15 @@
 from pathlib import Path
 from queue import Queue
 
+from threading import Event
 from tkinter import PhotoImage
 from tkinter import Tk
 from tkinter import Toplevel
 from tkinter import filedialog as fd
 from tkinter.ttk import Style
+from typing import Optional
+
+from ou_dedetai.app import App
 
 from . import config
 from . import control
@@ -23,6 +27,33 @@
 from . import utils
 from . import wine
 
+class GuiApp(App):
+    """Implements the App interface for all windows"""
+
+    _exit_option: Optional[str] = None
+
+    def __init__(self, root: "Root", **kwargs):
+        super().__init__()
+        self.root_to_destory_on_none = root
+
+    def _ask(self, question: str, options: list[str] = None) -> Optional[str]:
+        answer_q = Queue()
+        answer_event = Event()
+        def spawn_dialog():
+            # Create a new popup (with it's own event loop)
+            pop_up = ChoicePopUp(question, options, answer_q, answer_event)
+
+            # Run the mainloop in this thread
+            pop_up.mainloop()
+
+        utils.start_thread(spawn_dialog)
+
+        answer_event.wait()
+        answer = answer_q.get()
+        if answer is None:
+            self.root_to_destory_on_none.destroy()
+            return None
+        return answer
 
 class Root(Tk):
     def __init__(self, *args, **kwargs):
@@ -82,8 +113,45 @@ def __init__(self, *args, **kwargs):
         self.iconphoto(False, self.pi)
 
 
-class InstallerWindow():
-    def __init__(self, new_win, root, **kwargs):
+class ChoicePopUp(Tk):
+    """Creates a pop-up with a choice"""
+    def __init__(self, question: str, options: list[str], answer_q: Queue, answer_event: Event, **kwargs):
+        # Set root parameters.
+        super().__init__()
+        self.title(f"Quesiton: {question.strip().strip(':')}")
+        self.resizable(False, False)
+        self.gui = gui.ChoiceGui(self, question, options)
+        # Set root widget event bindings.
+        self.bind(
+            "<Return>",
+            self.on_confirm_choice
+        )
+        self.bind(
+            "<Escape>",
+            self.on_cancel_released
+        )
+        self.gui.cancel_button.config(command=self.on_cancel_released)
+        self.gui.okay_button.config(command=self.on_confirm_choice)
+        self.answer_q = answer_q
+        self.answer_event = answer_event
+
+    def on_confirm_choice(self, evt=None):
+        if self.gui.answer_dropdown.get() == gui.ChoiceGui._default_prompt:
+            return
+        answer = self.gui.answer_dropdown.get()
+        self.answer_q.put(answer)
+        self.answer_event.set()
+        self.destroy()
+
+    def on_cancel_released(self, evt=None):
+        self.answer_q.put(None)
+        self.answer_event.set()
+        self.destroy()
+
+
+class InstallerWindow(GuiApp):
+    def __init__(self, new_win, root: Root, **kwargs):
+        super().__init__(root)
         # Set root parameters.
         self.win = new_win
         self.root = root
@@ -177,7 +245,29 @@ def __init__(self, new_win, root, **kwargs):
 
         # Run commands.
         self.get_winetricks_options()
-        self.start_ensure_config()
+        self.grey_out_others_if_faithlife_product_is_not_selected()
+
+    def grey_out_others_if_faithlife_product_is_not_selected(self):
+        if not config.FLPRODUCT:
+            # Disable all input widgets after Version.
+            widgets = [
+                self.gui.version_dropdown,
+                self.gui.release_dropdown,
+                self.gui.release_check_button,
+                self.gui.wine_dropdown,
+                self.gui.wine_check_button,
+                self.gui.okay_button,
+            ]
+            self.set_input_widgets_state('disabled', widgets=widgets)
+            if not self.gui.productvar.get():
+                self.gui.productvar.set(self.gui.product_dropdown['values'][0])
+            # This is started in a new thread because it blocks and was called form the constructor
+            utils.start_thread(self.set_product)
+
+    def _hook_product_update(self, product: Optional[str]):
+        if product is not None:
+            self.gui.productvar.set(product)
+            self.gui.product_dropdown.set(product)
 
     def start_ensure_config(self):
         # Ensure progress counter is reset.
@@ -222,21 +312,7 @@ def todo(self, evt=None, task=None):
             else:
                 return
         self.set_input_widgets_state('enabled')
-        if task == 'FLPRODUCT':
-            # Disable all input widgets after Version.
-            widgets = [
-                self.gui.version_dropdown,
-                self.gui.release_dropdown,
-                self.gui.release_check_button,
-                self.gui.wine_dropdown,
-                self.gui.wine_check_button,
-                self.gui.okay_button,
-            ]
-            self.set_input_widgets_state('disabled', widgets=widgets)
-            if not self.gui.productvar.get():
-                self.gui.productvar.set(self.gui.product_dropdown['values'][0])
-            self.set_product()
-        elif task == 'TARGETVERSION':
+        if task == 'TARGETVERSION':
             # Disable all input widgets after Version.
             widgets = [
                 self.gui.release_dropdown,
@@ -290,7 +366,7 @@ def set_product(self, evt=None):
         self.gui.product_dropdown.selection_clear()
         if evt:  # manual override; reset dependent variables
             logging.debug(f"User changed FLPRODUCT to '{self.gui.flproduct}'")
-            config.FLPRODUCT = None
+            config.FLPRODUCT = self.gui.flproduct
             config.FLPRODUCTi = None
             config.VERBUM_PATH = None
 
@@ -556,8 +632,9 @@ def update_install_progress(self, evt=None):
         return 0
 
 
-class ControlWindow():
+class ControlWindow(GuiApp):
     def __init__(self, root, *args, **kwargs):
+        super().__init__(root)
         # Set root parameters.
         self.root = root
         self.root.title(f"{config.name_app} Control Panel")

ou_dedetai/installer.py

@@ -4,6 +4,8 @@
 import sys
 from pathlib import Path
 
+from ou_dedetai.app import App
+
 from . import config
 from . import msg
 from . import network
@@ -12,41 +14,23 @@
 from . import wine
 
 
-def ensure_product_choice(app=None):
+def ensure_product_choice(app: App):
     config.INSTALL_STEPS_COUNT += 1
     update_install_feedback("Choose product…", app=app)
     logging.debug('- config.FLPRODUCT')
     logging.debug('- config.FLPRODUCTi')
     logging.debug('- config.VERBUM_PATH')
 
-    if not config.FLPRODUCT:
-        if config.DIALOG == 'cli':
-            app.input_q.put(
-                (
-                    "Choose which FaithLife product the script should install: ",  # noqa: E501
-                    ["Logos", "Verbum", "Exit"]
-                )
-            )
-            app.input_event.set()
-            app.choice_event.wait()
-            app.choice_event.clear()
-            config.FLPRODUCT = app.choice_q.get()
-        else:
-            utils.send_task(app, 'FLPRODUCT')
-            if config.DIALOG == 'curses':
-                app.product_e.wait()
-            config.FLPRODUCT = app.product_q.get()
-    else:
-        if config.DIALOG == 'curses' and app:
-            app.set_product(config.FLPRODUCT)
-
-    config.FLPRODUCTi = get_flproducti_name(config.FLPRODUCT)
-    if config.FLPRODUCT == 'Logos':
+    # accessing app.conf.faithlife_product ensures the product is selected
+    # Eventually we'd migrate all of these kind of variables in config to this pattern
+    # That require a user selection if they are found to be None
+    config.FLPRODUCTi = get_flproducti_name(app.conf.faithlife_product)
+    if app.conf.faithlife_product == 'Logos':
         config.VERBUM_PATH = "/"
-    elif config.FLPRODUCT == 'Verbum':
+    elif app.conf.faithlife_product == 'Verbum':
         config.VERBUM_PATH = "/Verbum/"
 
-    logging.debug(f"> {config.FLPRODUCT=}")
+    logging.debug(f"> {app.conf.faithlife_product=}")
     logging.debug(f"> {config.FLPRODUCTi=}")
     logging.debug(f"> {config.VERBUM_PATH=}")