apprt/gtk-ng: hook up all the bindings for the config errors dialog

src/apprt/gtk-ng/class/application.zig

@@ -21,6 +21,7 @@ const adw_version = @import("../adw_version.zig");
 const gtk_version = @import("../gtk_version.zig");
 const GhosttyConfig = @import("config.zig").GhosttyConfig;
 const GhosttyWindow = @import("window.zig").GhosttyWindow;
+const ConfigErrorsDialog = @import("config_errors_dialog.zig").ConfigErrorsDialog;
 
 const log = std.log.scoped(.gtk_ghostty_application);
 
@@ -320,6 +321,11 @@ pub const GhosttyApplication = extern struct {
     fn startup(self: *GhosttyApplication) callconv(.C) void {
         log.debug("startup", .{});
 
+        gio.Application.virtual_methods.startup.call(
+            Class.parent,
+            self.as(Parent),
+        );
+
         // Setup our event loop
         self.startupXev();
 
@@ -331,10 +337,15 @@ pub const GhosttyApplication = extern struct {
             log.warn("TODO", .{});
         };
 
-        gio.Application.virtual_methods.startup.call(
-            Class.parent,
-            self.as(Parent),
-        );
+        // If we have any config diagnostics from loading, then we
+        // show the diagnostics dialog. We show this one as a general
+        // modal (not to any specific window) because we don't even
+        // know if the window will load.
+        const priv = self.private();
+        if (priv.config.hasDiagnostics()) {
+            const dialog: *ConfigErrorsDialog = .new(priv.config);
+            dialog.present(null);
+        }
     }
 
     /// Configure libxev to use a specific backend.
@@ -474,8 +485,8 @@ pub const GhosttyApplication = extern struct {
             self.as(Parent),
         );
 
-        const win = GhosttyWindow.new(self);
-        gtk.Window.present(win.as(gtk.Window));
+        // const win = GhosttyWindow.new(self);
+        // gtk.Window.present(win.as(gtk.Window));
     }
 
     fn finalize(self: *GhosttyApplication) callconv(.C) void {

src/apprt/gtk-ng/class/config.zig

@@ -29,6 +29,36 @@ pub const GhosttyConfig = extern struct {
         .private = .{ .Type = Private, .offset = &Private.offset },
     });
 
+    pub const properties = struct {
+        pub const @"diagnostics-buffer" = gobject.ext.defineProperty(
+            "diagnostics-buffer",
+            Self,
+            ?*gtk.TextBuffer,
+            .{
+                .nick = "Dignostics Buffer",
+                .blurb = "A TextBuffer that contains the diagnostics.",
+                .default = null,
+                .accessor = .{
+                    .getter = Self.diagnosticsBuffer,
+                },
+            },
+        );
+
+        pub const @"has-diagnostics" = gobject.ext.defineProperty(
+            "has-diagnostics",
+            Self,
+            bool,
+            .{
+                .nick = "has-diagnostics",
+                .blurb = "Whether the configuration has diagnostics.",
+                .default = false,
+                .accessor = .{
+                    .getter = Self.hasDiagnostics,
+                },
+            },
+        );
+    };
+
     const Private = struct {
         config: Config,
 
@@ -55,6 +85,48 @@ pub const GhosttyConfig = extern struct {
         return &self.private().config;
     }
 
+    /// Get the mutable configuration. This is usually NOT recommended
+    /// because any changes to the config won't be propagated to anyone
+    /// with a reference to this object. If you know what you're doing, then
+    /// you can use this.
+    pub fn getMut(self: *Self) *Config {
+        return &self.private().config;
+    }
+
+    /// Returns whether this configuration has any diagnostics.
+    pub fn hasDiagnostics(self: *Self) bool {
+        const config = self.get();
+        return !config._diagnostics.empty();
+    }
+
+    /// Reads the diagnostics of this configuration as a TextBuffer,
+    /// or returns null if there are no diagnostics.
+    pub fn diagnosticsBuffer(self: *Self) ?*gtk.TextBuffer {
+        const config = self.get();
+        if (config._diagnostics.empty()) return null;
+
+        const text_buf: *gtk.TextBuffer = .new(null);
+        errdefer text_buf.unref();
+
+        var buf: [4095:0]u8 = undefined;
+        var fbs = std.io.fixedBufferStream(&buf);
+        for (config._diagnostics.items()) |diag| {
+            fbs.reset();
+            diag.write(fbs.writer()) catch |err| {
+                log.warn(
+                    "error writing diagnostic to buffer err={}",
+                    .{err},
+                );
+                continue;
+            };
+
+            text_buf.insertAtCursor(&buf, @intCast(fbs.pos));
+            text_buf.insertAtCursor("\n", 1);
+        }
+
+        return text_buf;
+    }
+
     fn finalize(self: *Self) callconv(.C) void {
         self.private().config.deinit();
 
@@ -91,6 +163,10 @@ pub const GhosttyConfig = extern struct {
 
         fn init(class: *Class) callconv(.C) void {
             gobject.Object.virtual_methods.finalize.implement(class, &finalize);
+            gobject.ext.registerProperties(class, &.{
+                properties.@"diagnostics-buffer",
+                properties.@"has-diagnostics",
+            });
         }
     };
 };

src/apprt/gtk-ng/class/config_errors_dialog.zig

@@ -5,11 +5,11 @@ const gtk = @import("gtk");
 
 const gresource = @import("../build/gresource.zig");
 const adw_version = @import("../adw_version.zig");
-const GhosttyConfig = @import("config.zig").GhosttyConfig;
+const Config = @import("config.zig").GhosttyConfig;
 
 const log = std.log.scoped(.gtk_ghostty_window);
 
-pub const GhosttyConfigErrors = extern struct {
+pub const ConfigErrorsDialog = extern struct {
     const Self = @This();
     parent_instance: Parent,
 
@@ -19,18 +19,38 @@ pub const GhosttyConfigErrors = extern struct {
         adw.MessageDialog;
 
     pub const getGObjectType = gobject.ext.defineClass(Self, .{
+        .name = "GhosttyConfigErrorsDialog",
         .instanceInit = &init,
         .classInit = &Class.init,
         .parent_class = &Class.parent,
         .private = .{ .Type = Private, .offset = &Private.offset },
     });
 
+    pub const properties = struct {
+        pub const config = gobject.ext.defineProperty(
+            "config",
+            Self,
+            ?*Config,
+            .{
+                .nick = "config",
+                .blurb = "The configuration that this dialog is showing errors for.",
+                .default = null,
+                .accessor = gobject.ext.privateFieldAccessor(
+                    Self,
+                    Private,
+                    &Private.offset,
+                    "config",
+                ),
+            },
+        );
+    };
+
     const Private = struct {
-        _todo: u8 = 0,
+        config: ?*Config,
         var offset: c_int = 0;
     };
 
-    pub fn new(config: *GhosttyConfig) *Self {
+    pub fn new(config: *Config) *Self {
         return gobject.ext.newInstance(Self, .{
             .config = config,
         });
@@ -40,6 +60,13 @@ pub const GhosttyConfigErrors = extern struct {
         gtk.Widget.initTemplate(self.as(gtk.Widget));
     }
 
+    pub fn present(self: *Self, parent: ?*gtk.Widget) void {
+        switch (Parent) {
+            adw.AlertDialog => self.as(adw.Dialog).present(parent),
+            else => unreachable,
+        }
+    }
+
     pub fn as(win: *Self, comptime T: type) *T {
         return gobject.ext.as(T, win);
     }
@@ -58,9 +85,14 @@ pub const GhosttyConfigErrors = extern struct {
                         .minor = 5,
                         .name = "config-errors-dialog",
                     }),
+
                     else => unreachable,
                 },
             );
+
+            gobject.ext.registerProperties(class, &.{
+                properties.config,
+            });
         }
 
         pub fn as(class: *Class, comptime T: type) *T {

src/apprt/gtk-ng/class/window.zig

@@ -20,7 +20,7 @@ pub const GhosttyWindow = extern struct {
     });
 
     const Private = struct {
-        _todo: u8 = 0,
+        _todo: u8,
         var offset: c_int = 0;
     };
 
@@ -28,12 +28,20 @@ pub const GhosttyWindow = extern struct {
         return gobject.ext.newInstance(Self, .{ .application = app });
     }
 
-    fn init(win: *GhosttyWindow, _: *Class) callconv(.C) void {
-        gtk.Widget.initTemplate(win.as(gtk.Widget));
+    fn init(self: *GhosttyWindow, _: *Class) callconv(.C) void {
+        gtk.Widget.initTemplate(self.as(gtk.Widget));
     }
 
-    pub fn as(win: *Self, comptime T: type) *T {
-        return gobject.ext.as(T, win);
+    pub fn as(self: *Self, comptime T: type) *T {
+        return gobject.ext.as(T, self);
+    }
+
+    fn private(self: *Self) *Private {
+        return gobject.ext.impl_helpers.getPrivate(
+            self,
+            Private,
+            Private.offset,
+        );
     }
 
     pub const Class = extern struct {

src/apprt/gtk-ng/ui/1.5/config-errors-dialog.blp

@@ -1,7 +1,7 @@
 using Gtk 4.0;
 using Adw 1;
 
-Adw.AlertDialog config_errors_dialog {
+template $GhosttyConfigErrorsDialog: Adw.AlertDialog {
   heading: _("Configuration Errors");
   body: _("One or more configuration errors were found. Please review the errors below, and either reload your configuration or ignore these errors.");
 
@@ -21,6 +21,7 @@ Adw.AlertDialog config_errors_dialog {
       bottom-margin: 8;
       left-margin: 8;
       right-margin: 8;
+      buffer: bind (template.config as <$GhosttyConfig>).diagnostics-buffer;
     }
   };
 }