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const std = @import("std");
const Allocator = std.mem.Allocator;
const HTML = @import("html/Element.zig");
const Element = @import("Element.zig");
const Self = @This();
src: []const u8,
alt: ?[]const u8 = null,
source: ?Element = null,
pub fn init(alloc: Allocator, src: []const u8) !*Self {
const v = try alloc.create(Self);
v.* = .{
.src = src,
};
return v;
}
pub fn element(self: *Self) Element {
return .{ .ptr = self, .vtable = .{ .deinit = destroy, .html = html } };
}
pub fn deinit(self: *Self, alloc: Allocator) void {
destroy(self, alloc);
}
fn destroy(context: *anyopaque, alloc: Allocator) void {
const self: *Self = @ptrCast(@alignCast(context));
if (self.source) |it| it.deinit(alloc);
alloc.destroy(self);
}
fn html(context: *anyopaque, alloc: Allocator) HTML.Error!HTML {
const self: *Self = @ptrCast(@alignCast(context));
var img = try HTML.init(alloc, .void, "img");
errdefer img.deinit();
try img.setAttribute("src", self.src);
if (self.alt) |it| try img.setAttribute("alt", it);
var el = try HTML.init(alloc, .content, "figure");
errdefer el.deinit();
try el.appendContent(img);
const source = self.source orelse return el;
var caption = try HTML.init(alloc, .content, "figcaption");
errdefer caption.deinit();
try caption.appendContent(try source.html(alloc));
try el.appendContent(caption);
return el;
}
test "html" {
const alloc = std.testing.allocator;
const expect = std.testing.expect;
const eql = std.mem.eql;
var img = try init(alloc, "foo");
defer img.deinit(alloc);
const h = try img.element().renderHTML(alloc);
defer alloc.free(h);
try expect(eql(u8, h, "<figure><img src=\"foo\"></figure>"));
img.alt = "bar";
const h2 = try img.element().renderHTML(alloc);
defer alloc.free(h2);
try expect(eql(u8, h2, "<figure><img src=\"foo\" alt=\"bar\"></figure>"));
const in = try Element.Empty.init(alloc);
try in.content.append(alloc, (try Element.Literal.init(alloc, "caption")).element());
img.source = in.element();
const h3 = try img.element().renderHTML(alloc);
defer alloc.free(h3);
try expect(eql(u8, h3, "<figure><img src=\"foo\" alt=\"bar\"><figcaption>caption</figcaption></figure>"));
}
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