Code cleanup; Reader classes renamed to Decoders, Writers to Encoders, every Decoder must have a corresponding Settings class now just like Encoders. UserDefinedEncoders renamed to CommandLineEncoders, etc.

CUETools.Codecs/ViewModel/DecoderListViewModel.cs

@@ -0,0 +1,46 @@
+using System;
+using System.ComponentModel;
+
+namespace CUETools.Codecs
+{
+    public class DecoderListViewModel : BindingList<AudioDecoderSettingsViewModel>
+    {
+        public DecoderListViewModel()
+            : base()
+        {
+            AddingNew += OnAddingNew;
+        }
+
+        private void OnAddingNew(object sender, AddingNewEventArgs e)
+        {
+            e.NewObject = new AudioDecoderSettingsViewModel(new CommandLine.DecoderSettings("new", "wav", "", ""));
+        }
+
+        public bool TryGetValue(string extension, bool lossless, string name, out AudioDecoderSettingsViewModel result)
+        {
+            foreach (AudioDecoderSettingsViewModel udc in this)
+            {
+                if (udc.decoderSettings.Extension == extension && udc.decoderSettings.Lossless == lossless && udc.decoderSettings.Name == name)
+                {
+                    result = udc;
+                    return true;
+                }
+            }
+            result = null;
+            return false;
+        }
+
+        public AudioDecoderSettingsViewModel GetDefault(string extension, bool lossless)
+        {
+            AudioDecoderSettingsViewModel result = null;
+            foreach (AudioDecoderSettingsViewModel udc in this)
+            {
+                if (udc.decoderSettings.Extension == extension && udc.decoderSettings.Lossless == lossless && (result == null || result.decoderSettings.Priority < udc.decoderSettings.Priority))
+                {
+                    result = udc;
+                }
+            }
+            return result;
+        }
+    }
+}