proper mpv title property implementation

Changelog.md

@@ -8,7 +8,7 @@
 - The code from the included JavaScript file was ported into the core player
   because JavaScript is currently broken in the builds of shinshiro.
 - MediaInfo 21.3
-- libmpv 2021-02-28
+- libmpv shinchiro 2021-04-04
 
 
 5.4.8.7 Beta (2021-03-09)

Manual.md

@@ -492,17 +492,13 @@ The documentation of mpvs window features can be found here:
 
 mpv.net has currently implemented the following window features:
 
-[screen](https://mpv.io/manual/master/#options-screen)
-
-[fullscreen](https://mpv.io/manual/master/#options-fullscreen)
-
-[ontop](https://mpv.io/manual/master/#options-ontop)
-
-[border](https://mpv.io/manual/master/#options-border)
-
-[window-minimized](https://mpv.io/manual/master/#options-window-minimized)
-
-[window-maximized](https://mpv.io/manual/master/#options-window-maximized)
+- [border](https://mpv.io/manual/master/#options-border)
+- [fullscreen](https://mpv.io/manual/master/#options-fullscreen)
+- [ontop](https://mpv.io/manual/master/#options-ontop)
+- [screen](https://mpv.io/manual/master/#options-screen)
+- [title](https://mpv.io/manual/master/#options-title)
+- [window-maximized](https://mpv.io/manual/master/#options-window-maximized)
+- [window-minimized](https://mpv.io/manual/master/#options-window-minimized)
 
 
 **Partly implemented are:**

mpv.net/WinForms/MainForm.cs

@@ -49,10 +49,6 @@ namespace mpvnet
                 Hwnd = Handle;
                 ConsoleHelp.Padding = 60;
                 core.Init();
-                core.Title = core.get_property_string("title");
-
-                if (core.Title != null && core.Title.EndsWith("} - mpv"))
-                    core.Title = "";
 
                 if (App.GlobalMediaKeys)
                 {
@@ -92,7 +88,6 @@ namespace mpvnet
                 Application.ThreadException += (sender, e) => App.ShowException(e.Exception);
                 Msg.SupportURL = "https://github.com/stax76/mpv.net#support";
 
-                Text = string.IsNullOrEmpty(core.Title) ? "mpv.net " + Application.ProductVersion : core.Title;
                 TaskbarButtonCreatedMessage = RegisterWindowMessage("TaskbarButtonCreated");
                 
                 ContextMenu = new ContextMenuStripEx(components);
@@ -167,10 +162,7 @@ namespace mpvnet
 
         void Shutdown() => BeginInvoke(new Action(() => Close()));
 
-        void Idle()
-        {
-            BeginInvoke(new Action(() => Text = string.IsNullOrEmpty(core.Title) ? "mpv.net " + Application.ProductVersion : core.Title));
-        }
+        void Idle() => SetTitle();
 
         bool WasShown() => ShownTickCount != 0 && Environment.TickCount > ShownTickCount + 500;
 
@@ -524,15 +516,7 @@ namespace mpvnet
             string path = core.get_property_string("path");
 
             BeginInvoke(new Action(() => {
-                if (string.IsNullOrEmpty(core.Title))
-                {
-                    if (path.Contains("://"))
-                        Text = core.get_property_string("media-title") + " - mpv.net " + Application.ProductVersion;
-                    else
-                        Text = path.FileName() + " - mpv.net " + Application.ProductVersion;
-                }
-                else
-                    Text = core.Title;
+                Text = core.expand(Title);
 
                 int interval = (int)(core.Duration.TotalMilliseconds / 100);
 
@@ -555,6 +539,8 @@ namespace mpvnet
                 RecentFiles.RemoveAt(App.RecentCount);
         }
 
+        void SetTitle() => BeginInvoke(new Action(() => Text = core.expand(Title)));
+
         void SaveWindowProperties()
         {
             if (WindowState == FormWindowState.Normal)
@@ -573,6 +559,21 @@ namespace mpvnet
             }
         }
 
+        string _Title;
+
+        public string Title {
+            get => _Title;
+            set {
+                if (string.IsNullOrEmpty(value))
+                    return;
+
+                if (value.EndsWith("} - mpv"))
+                    value = value.Replace("} - mpv", "} - mpv.net");
+
+                _Title = value;
+            }
+        }
+
         protected override void WndProc(ref Message m)
         {
             //Debug.WriteLine(m);
@@ -749,11 +750,8 @@ namespace mpvnet
         void PropChangeSid(string value) => core.Sid = value;
 
         void PropChangeVid(string value) => core.Vid = value;
-        
-        void PropChangeTitle(string value) => BeginInvoke(new Action(() => {
-            if (value != null && !value.EndsWith("} - mpv"))
-                Text = value;
-        }));
+
+        void PropChangeTitle(string value) { Title = value; SetTitle(); }
 
         void PropChangeEdition(int value) => core.Edition = value;
         

mpv.net/mpv/Core.cs

@@ -100,7 +100,6 @@ namespace mpvnet
         public string GPUAPI { get; set; } = "auto";
         public string InputConfPath { get => ConfigFolder + "input.conf"; }
         public string Sid { get; set; } = "";
-        public string Title { get; set; } = "";
         public string Vid { get; set; } = "";
 
         public bool Border { get; set; } = true;
@@ -178,7 +177,6 @@ namespace mpvnet
                 case "taskbar-progress": TaskbarProgress = value == "yes"; break;
                 case "screen": Screen = Convert.ToInt32(value); break;
                 case "gpu-api": GPUAPI = value; break;
-                case "title": Title = value; break;
             }
 
             if (AutofitLarger > 1)
@@ -684,6 +682,12 @@ namespace mpvnet
 
         public string expand(string value)
         {
+            if (value == null)
+                return "";
+
+            if (!value.Contains("${"))
+                return value;
+
             string[] args = { "expand-text", value };
             int count = args.Length + 1;
             IntPtr[] pointers = new IntPtr[count];