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LibThreading+Everywhere: Support returning error from BackgroundAction

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This patch allows returning an `Error` from the `on_complete` callback
in `BackgroundAction`.

It also adds a custom callback to manage errors returned during its
execution.
This commit is contained in:
Lucas CHOLLET 2022-12-12 23:34:28 +01:00 • committed by Linus Groh
parent 664117564a
commit 2693745336
6 changed files with 38 additions and 21 deletions
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6
Userland/Applications/DisplaySettings/MonitorWidget.cpp
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@ -37,17 +37,19 @@ bool MonitorWidget::set_wallpaper(DeprecatedString path)
return Gfx::Bitmap::try_load_from_file(path);
},
[this, path](ErrorOr<NonnullRefPtr<Gfx::Bitmap>> bitmap_or_error) {
[this, path](ErrorOr<NonnullRefPtr<Gfx::Bitmap>> bitmap_or_error) -> ErrorOr<void> {
// If we've been requested to change while we were loading the bitmap, don't bother spending the cost to
// move and render the now stale bitmap.
if (is_different_to_current_wallpaper_path(path))
return;
return {};
if (bitmap_or_error.is_error())
m_wallpaper_bitmap = nullptr;
else
m_wallpaper_bitmap = bitmap_or_error.release_value();
m_desktop_dirty = true;
update();
return bitmap_or_error.is_error() ? bitmap_or_error.release_error() : ErrorOr<void> {};
});
if (path.is_empty())