add ErrorEvent webapi

src/browser/events/event.zig

@@ -31,14 +31,10 @@ const EventTargetUnion = @import("../dom/event_target.zig").Union;
 const CustomEvent = @import("custom_event.zig").CustomEvent;
 const ProgressEvent = @import("../xhr/progress_event.zig").ProgressEvent;
 const MouseEvent = @import("mouse_event.zig").MouseEvent;
+const ErrorEvent = @import("../html/error_event.zig").ErrorEvent;
 
 // Event interfaces
-pub const Interfaces = .{
-    Event,
-    CustomEvent,
-    ProgressEvent,
-    MouseEvent,
-};
+pub const Interfaces = .{ Event, CustomEvent, ProgressEvent, MouseEvent, ErrorEvent };
 
 pub const Union = generate.Union(Interfaces);
 
@@ -62,6 +58,7 @@ pub const Event = struct {
             .custom_event => .{ .CustomEvent = @as(*CustomEvent, @ptrCast(evt)).* },
             .progress_event => .{ .ProgressEvent = @as(*ProgressEvent, @ptrCast(evt)).* },
             .mouse_event => .{ .MouseEvent = @as(*parser.MouseEvent, @ptrCast(evt)) },
+            .error_event => .{ .ErrorEvent = @as(*ErrorEvent, @ptrCast(evt)).* },
         };
     }
 

src/browser/html/error_event.zig

@@ -0,0 +1,118 @@
+// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+const Env = @import("../env.zig").Env;
+const parser = @import("../netsurf.zig");
+
+// https://developer.mozilla.org/en-US/docs/Web/API/ErrorEvent
+pub const ErrorEvent = struct {
+    pub const prototype = *parser.Event;
+    pub const union_make_copy = true;
+
+    proto: parser.Event,
+    message: []const u8,
+    filename: []const u8,
+    lineno: i32,
+    colno: i32,
+    @"error": ?Env.JsObject,
+
+    const ErrorEventInit = struct {
+        message: []const u8 = "",
+        filename: []const u8 = "",
+        lineno: i32 = 0,
+        colno: i32 = 0,
+        @"error": ?Env.JsObject = null,
+    };
+
+    pub fn constructor(event_type: []const u8, opts: ?ErrorEventInit) !ErrorEvent {
+        const event = try parser.eventCreate();
+        defer parser.eventDestroy(event);
+        try parser.eventInit(event, event_type, .{});
+        try parser.eventSetInternalType(event, .event);
+
+        const o = opts orelse ErrorEventInit{};
+
+        return .{
+            .proto = event.*,
+            .message = o.message,
+            .filename = o.filename,
+            .lineno = o.lineno,
+            .colno = o.colno,
+            .@"error" = if (o.@"error") |e| try e.persist() else null,
+        };
+    }
+
+    pub fn get_message(self: *const ErrorEvent) []const u8 {
+        return self.message;
+    }
+
+    pub fn get_filename(self: *const ErrorEvent) []const u8 {
+        return self.filename;
+    }
+
+    pub fn get_lineno(self: *const ErrorEvent) i32 {
+        return self.lineno;
+    }
+
+    pub fn get_colno(self: *const ErrorEvent) i32 {
+        return self.colno;
+    }
+
+    const ErrorValue = union(enum) {
+        obj: Env.JsObject,
+        undefined: void,
+    };
+    pub fn get_error(self: *const ErrorEvent) ErrorValue {
+        if (self.@"error") |e| {
+            return .{ .obj = e };
+        }
+        return .{ .undefined = {} };
+    }
+};
+
+const testing = @import("../../testing.zig");
+test "Browser.HTML.ErrorEvent" {
+    var runner = try testing.jsRunner(testing.tracking_allocator, .{ .html = "<div id=c></div>" });
+    defer runner.deinit();
+
+    try runner.testCases(&.{
+        .{ "let e1 = new ErrorEvent('err1')", null },
+        .{ "e1.message", "" },
+        .{ "e1.filename", "" },
+        .{ "e1.lineno", "0" },
+        .{ "e1.colno", "0" },
+        .{ "e1.error", "undefined" },
+
+        .{
+            \\ let e2 = new ErrorEvent('err1', {
+            \\    message: 'm1',
+            \\    filename: 'fx19',
+            \\    lineno: 443,
+            \\    colno: 8999,
+            \\    error: 'under 9000!',
+            \\
+            \\})
+            ,
+            null,
+        },
+        .{ "e2.message", "m1" },
+        .{ "e2.filename", "fx19" },
+        .{ "e2.lineno", "443" },
+        .{ "e2.colno", "8999" },
+        .{ "e2.error", "under 9000!" },
+    }, .{});
+}

src/browser/html/html.zig

@@ -37,4 +37,5 @@ pub const Interfaces = .{
     Location,
     MediaQueryList,
     @import("screen.zig").Interfaces,
+    @import("error_event.zig").ErrorEvent,
 };

src/browser/netsurf.zig

@@ -525,6 +525,7 @@ pub const EventType = enum(u8) {
     progress_event = 1,
     custom_event = 2,
     mouse_event = 3,
+    error_event = 4,
 };
 
 pub const MutationEvent = c.dom_mutation_event;

src/browser/xhr/progress_event.zig

@@ -37,10 +37,10 @@ pub const ProgressEvent = struct {
     loaded: u64 = 0,
     total: u64 = 0,
 
-    pub fn constructor(eventType: []const u8, opts: ?EventInit) !ProgressEvent {
+    pub fn constructor(event_type: []const u8, opts: ?EventInit) !ProgressEvent {
         const event = try parser.eventCreate();
         defer parser.eventDestroy(event);
-        try parser.eventInit(event, eventType, .{});
+        try parser.eventInit(event, event_type, .{});
         try parser.eventSetInternalType(event, .progress_event);
 
         const o = opts orelse EventInit{};