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feat(shared): route window.alert() to non-blocking toast

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There are 76 alert() call sites across the eight tools — three different
ad-hoc error-surfacing patterns (alert, console.error, classifier's own
showToast). Touching every site is a sweep with no judgment payoff:
every alert is "something went wrong, the user should know," which is
exactly what toast at level='error' is for.

Shim is one if-block at the bottom of shared/toast.js. It saves the
native window.alert as window.alertNative (so any truly modal-blocking
call site can opt back in by name), then replaces window.alert with a
function that forwards through window.zddc.toast(msg, 'error'). Effect
is global — every existing alert in every tool becomes a non-blocking,
ARIA-announced (aria-live=assertive) toast that the user can click to
dismiss.

handler/tables.html refreshed by ./build as a side effect (it bakes the
current tables/dist/ into the binary every build).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
ZDDC 2026-05-10 19:30:36 -05:00
parent 7904a99c21
commit 8be6c4d98b
2 changed files with 27 additions and 1 deletions
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13
shared/toast.js
View file

@ -60,4 +60,17 @@
}
window.zddc.toast = toast;
// Route window.alert() calls into the toast helper. Every tool has
// accumulated some `alert(...)` sites for error reporting; rather
// than touch each one, intercept globally so they're non-blocking
// and ARIA-announced consistently. Native alert is preserved on
// window.alertNative for the rare case where a truly modal block
// is needed (e.g. before navigating away with unsaved changes).
if (typeof window.alert === 'function' && !window.alertNative) {
window.alertNative = window.alert.bind(window);
window.alert = function (msg) {
toast(String(msg == null ? '' : msg), 'error');
};
}
})();

15
zddc/internal/handler/tables.html
View file

@ -1155,7 +1155,7 @@ body.help-open .app-header {
</svg>
<div class="header-title-group">
<span class="app-header__title" id="table-title">ZDDC Table</span>
<span class="build-timestamp"><span style="color:red;font-weight:bold">v0.0.17-beta · 2026-05-11 · crescent-coast-beam</span></span>
<span class="build-timestamp"><span style="color:red;font-weight:bold">v0.0.17-alpha · 2026-05-11 00:27:49 · f2af379-dirty</span></span>
</div>
</div>
<div class="header-right">
@ -2232,6 +2232,19 @@ body.help-open .app-header {
}
window.zddc.toast = toast;
// Route window.alert() calls into the toast helper. Every tool has
// accumulated some `alert(...)` sites for error reporting; rather
// than touch each one, intercept globally so they're non-blocking
// and ARIA-announced consistently. Native alert is preserved on
// window.alertNative for the rare case where a truly modal block
// is needed (e.g. before navigating away with unsaved changes).
if (typeof window.alert === 'function' && !window.alertNative) {
window.alertNative = window.alert.bind(window);
window.alert = function (msg) {
toast(String(msg == null ? '' : msg), 'error');
};
}
})();
// shared/nav.js — lateral navigation strip across the four canonical