Refactor: Module-level UI construction (MIDI IN column)

presets.py

@@ -1,11 +1,20 @@
 import json
 import os
 
+from PyQt6.QtWidgets import (
+    QApplication, QMainWindow, QWidget, QVBoxLayout,
+    QHBoxLayout, QSlider, QComboBox, QLabel, QPushButton,
+    QSizePolicy, QSpinBox, QLineEdit, QInputDialog, QFrame,
+    QCheckBox, QMessageBox
+)
+
+
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 PRESETS_DIR = os.path.join(BASE_DIR, "presets")
 PRESETS_FILE = os.path.join(PRESETS_DIR, "presets.json")
 os.makedirs(PRESETS_DIR, exist_ok=True)
 
+
 def load_presets_file():
     if os.path.exists(PRESETS_FILE):
         with open(PRESETS_FILE, "r") as f:
@@ -14,4 +23,78 @@ def load_presets_file():
 
 def save_presets_file(data):
     with open(PRESETS_FILE, "w") as f:
-        json.dump(data, f, indent=2)
+        json.dump(data, f, indent=2)
+
+def ensure_preset_structure(presets):
+    if "presets" not in presets:
+        return {"__last_used__": None, "presets": presets}
+    return presets
+
+def on_preset_selected(menu_presets: QComboBox, app_window: QMainWindow, ready: bool, loaded_presets: dict):
+
+    selectedOption = menu_presets.currentText()
+
+    if ready and selectedOption and selectedOption in loaded_presets["presets"]:
+        loaded_presets["__last_used__"] = selectedOption
+        save_presets_file(loaded_presets)
+        app_window.apply_preset(loaded_presets["presets"][selectedOption])
+
+def save_preset(app_window: QMainWindow, menu_presets: QComboBox, loaded_presets: dict):
+
+    selectedOption = menu_presets.currentText()
+
+    if not selectedOption or selectedOption not in loaded_presets["presets"]:
+        app_window.save_preset_as()  # not self
+        return
+    loaded_presets["presets"][selectedOption] = app_window._build_preset_data(selectedOption)  # not self
+    loaded_presets["__last_used__"] = selectedOption
+    save_presets_file(loaded_presets)
+    app_window._show_save_status()  # not self
+    print(f"Saved preset: {selectedOption}")
+
+def save_preset_as(app_window: QMainWindow, menu_presets: QComboBox, loaded_presets: dict):
+
+    print(f"save as button tapped")  
+
+    selectedOption = menu_presets.currentText()
+
+    selectedOption, ok = QInputDialog.getText(app_window, "Save As", "Preset name:")
+    if not ok or not selectedOption.strip():
+        return
+    selectedOption = selectedOption.strip()
+    loaded_presets["presets"][selectedOption] = app_window._build_preset_data(selectedOption)
+    loaded_presets["__last_used__"] = selectedOption
+    save_presets_file(loaded_presets)
+    app_window.refresh_preset_combo()
+    menu_presets.setCurrentText(selectedOption)
+    app_window._show_save_status()
+    print(f"Saved preset as: {selectedOption}")
+
+    
+def delete_preset(app_window: QMainWindow, menu_presets: QComboBox, loaded_presets: dict):
+
+    selectedOption = menu_presets.currentText()
+
+    selectedOption = menu_presets.currentText()
+
+    if not selectedOption or selectedOption not in loaded_presets["presets"]:
+        return
+    
+    msg = QMessageBox(app_window)
+    msg.setWindowTitle("Remove Preset")
+    msg.setText(f'Are you sure you want to remove "{selectedOption}"?')
+    msg.setIcon(QMessageBox.Icon.NoIcon)
+    msg.setStandardButtons(QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No)
+    reply = msg.exec()
+
+    if reply != QMessageBox.StandardButton.Yes:
+        return
+    
+    del loaded_presets["presets"][selectedOption]
+
+    if loaded_presets["__last_used__"] == selectedOption:
+        loaded_presets["__last_used__"] = None
+        
+    save_presets_file(loaded_presets)
+    app_window.refresh_preset_combo()
+    print(f"Deleted preset: {selectedOption}")