fix: crash on cancelling the change theme palette

This commit also cleans up the handling of the previous theme variable.
This commit is contained in:
CJ van den Berg 2025-12-26 16:50:38 +01:00
parent 3dcdb64f83
commit 1308a14138
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9

View file

@ -24,19 +24,22 @@ pub const Match = struct {
matches: []const usize,
};
var previous_theme: ?[]const u8 = null;
pub const ValueType = struct {
previous_theme: ?[]const u8 = null,
};
pub const defaultValue: ValueType = .{};
pub fn load_entries(palette: *Type) !usize {
var longest_hint: usize = 0;
var idx: usize = 0;
previous_theme = tui.theme().name;
try set_previous_theme(palette, tui.theme().name);
for (Widget.themes) |theme| {
idx += 1;
(try palette.entries.addOne(palette.allocator)).* = .{
.label = theme.description,
.name = theme.name,
};
if (previous_theme) |theme_name| if (std.mem.eql(u8, theme.name, theme_name)) {
if (get_previous_theme(palette)) |theme_name| if (std.mem.eql(u8, theme.name, theme_name)) {
palette.initial_selected = idx;
};
longest_hint = @max(longest_hint, theme.name.len);
@ -45,6 +48,27 @@ pub fn load_entries(palette: *Type) !usize {
return longest_hint;
}
pub fn deinit(palette: *Type) void {
clear_previous_theme(palette);
}
fn clear_previous_theme(palette: *Type) void {
tp.trace(tp.channel.debug, .{ "clear_previous_theme", palette.value.previous_theme });
if (palette.value.previous_theme) |old| palette.allocator.free(old);
palette.value.previous_theme = null;
}
fn set_previous_theme(palette: *Type, theme: []const u8) error{OutOfMemory}!void {
tp.trace(tp.channel.debug, .{ "set_previous_theme", palette.value.previous_theme, theme });
clear_previous_theme(palette);
palette.value.previous_theme = try palette.allocator.dupe(u8, theme);
}
fn get_previous_theme(palette: *Type) ?[]const u8 {
tp.trace(tp.channel.debug, .{ "get_previous_theme", palette.value.previous_theme });
return palette.value.previous_theme;
}
pub fn add_menu_entry(palette: *Type, entry: *Entry, matches: ?[]const usize) !void {
var value: std.Io.Writer.Allocating = .init(palette.allocator);
defer value.deinit();
@ -57,15 +81,16 @@ pub fn add_menu_entry(palette: *Type, entry: *Entry, matches: ?[]const usize) !v
}
fn select(menu: **Type.MenuType, button: *Type.ButtonType, _: Type.Pos) void {
const palette = menu.*.opts.ctx;
var description_: []const u8 = undefined;
var name_: []const u8 = undefined;
var iter = button.opts.label;
if (!(cbor.matchString(&iter, &description_) catch false)) return;
if (!(cbor.matchString(&iter, &name_) catch false)) return;
if (previous_theme) |prev| if (std.mem.eql(u8, prev, name_))
if (get_previous_theme(palette)) |prev| if (std.mem.eql(u8, prev, name_))
return;
tp.self_pid().send(.{ "cmd", "set_theme", .{name_} }) catch |e| menu.*.opts.ctx.logger.err("theme_palette", e);
tp.self_pid().send(.{ "cmd", "exit_overlay_mode" }) catch |e| menu.*.opts.ctx.logger.err("theme_palette", e);
tp.self_pid().send(.{ "cmd", "set_theme", .{name_} }) catch |e| palette.logger.err("theme_palette", e);
tp.self_pid().send(.{ "cmd", "exit_overlay_mode" }) catch |e| palette.logger.err("theme_palette", e);
}
pub fn updated(palette: *Type, button_: ?*Type.ButtonType) !void {
@ -79,8 +104,8 @@ pub fn updated(palette: *Type, button_: ?*Type.ButtonType) !void {
}
pub fn cancel(palette: *Type) !void {
if (previous_theme) |name_| if (!std.mem.eql(u8, name_, tui.theme().name)) {
previous_theme = null;
if (get_previous_theme(palette)) |name_| if (!std.mem.eql(u8, name_, tui.theme().name)) {
tp.self_pid().send(.{ "cmd", "set_theme", .{name_} }) catch |e| palette.logger.err("theme_palette cancel", e);
clear_previous_theme(palette);
};
}