Add SettingsActivity framework

...so apps can easily add settings screens with just a few lines of code!

CHANGELOG.md

@@ -8,7 +8,7 @@
 - Improve robustness with custom exception that does not deinit() the TaskHandler
 - Improve robustness by removing TaskHandler callback that throws an uncaught exception
 - Make "Power Off" button on desktop exit completely
-- Promote SettingActivity from app to framework: now all apps can use it to easily build a setting screen
+- Create new SettingsActivity and SettingActivity framework so apps can easily add settings screens with just a few lines of code
 
 0.5.2
 =====

internal_filesystem/lib/mpos/ui/__init__.py

@@ -15,6 +15,7 @@ from .display import (
 from .event import get_event_name, print_event
 from .util import shutdown, set_foreground_app, get_foreground_app
 from .setting_activity import SettingActivity
+from .settings_activity import SettingsActivity
 
 __all__ = [
     "setContentView", "back_screen", "remove_and_stop_current_activity", "remove_and_stop_all_activities"
@@ -28,5 +29,6 @@ __all__ = [
     "get_pointer_xy",
     "get_event_name", "print_event",
     "shutdown", "set_foreground_app", "get_foreground_app",
-    "SettingActivity"
+    "SettingActivity",
+    "SettingsActivity"
 ]

internal_filesystem/lib/mpos/ui/settings_activity.py

@@ -0,0 +1,85 @@
+import lvgl as lv
+
+import mpos
+from mpos.apps import Activity, Intent
+from .setting_activity import SettingActivity
+
+# Used to list and edit all settings:
+class SettingsActivity(Activity):
+
+    # Taken the Intent:
+    prefs = None
+    settings = None
+
+    def onCreate(self):
+        self.prefs = self.getIntent().extras.get("prefs")
+        self.settings = self.getIntent().extras.get("settings")
+
+        print("creating SettingsActivity ui...")
+        screen = lv.obj()
+        screen.set_style_pad_all(mpos.ui.pct_of_display_width(2), 0)
+        screen.set_flex_flow(lv.FLEX_FLOW.COLUMN)
+        screen.set_style_border_width(0, 0)
+        self.setContentView(screen)
+
+    def onResume(self, screen):
+        wallet_type = self.prefs.get_string("wallet_type") # might have changed in the settings
+
+        # Create settings entries
+        screen.clean()
+        # Get the group for focusable objects
+        focusgroup = lv.group_get_default()
+        if not focusgroup:
+            print("WARNING: could not get default focusgroup")
+
+        for setting in self.settings:
+            # Check if it should be shown:
+            should_show_function = setting.get("should_show")
+            if should_show_function:
+                should_show = should_show_function(setting)
+                if should_show is False:
+                    continue
+            # Container for each setting
+            setting_cont = lv.obj(screen)
+            setting_cont.set_width(lv.pct(100))
+            setting_cont.set_height(lv.SIZE_CONTENT)
+            setting_cont.set_style_border_width(1, 0)
+            #setting_cont.set_style_border_side(lv.BORDER_SIDE.BOTTOM, 0)
+            setting_cont.set_style_pad_all(mpos.ui.pct_of_display_width(2), 0)
+            setting_cont.add_flag(lv.obj.FLAG.CLICKABLE)
+            setting["cont"] = setting_cont  # Store container reference for visibility control
+
+            # Title label (bold, larger)
+            title = lv.label(setting_cont)
+            title.set_text(setting["title"])
+            title.set_style_text_font(lv.font_montserrat_16, 0)
+            title.set_pos(0, 0)
+
+            # Value label (smaller, below title)
+            value = lv.label(setting_cont)
+            value.set_text(self.prefs.get_string(setting["key"], "(not set)"))
+            value.set_style_text_font(lv.font_montserrat_12, 0)
+            value.set_style_text_color(lv.color_hex(0x666666), 0)
+            value.set_pos(0, 20)
+            setting["value_label"] = value  # Store reference for updating
+            setting_cont.add_event_cb(lambda e, s=setting: self.startSettingActivity(s), lv.EVENT.CLICKED, None)
+            setting_cont.add_event_cb(lambda e, container=setting_cont: self.focus_container(container),lv.EVENT.FOCUSED,None)
+            setting_cont.add_event_cb(lambda e, container=setting_cont: self.defocus_container(container),lv.EVENT.DEFOCUSED,None)
+            if focusgroup:
+                focusgroup.add_obj(setting_cont)
+
+    def focus_container(self, container):
+        print(f"container {container} focused, setting border...")
+        container.set_style_border_color(lv.theme_get_color_primary(None),lv.PART.MAIN)
+        container.set_style_border_width(1, lv.PART.MAIN)
+        container.scroll_to_view(True) # scroll to bring it into view
+
+    def defocus_container(self, container):
+        print(f"container {container} defocused, unsetting border...")
+        container.set_style_border_width(0, lv.PART.MAIN)
+
+    def startSettingActivity(self, setting):
+        intent = Intent(activity_class=SettingActivity)
+        intent.putExtra("prefs", self.prefs)
+        intent.putExtra("setting", setting)
+        self.startActivity(intent)