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<template>
<StudipDialog
v-if="showModal"
width="600"
height="200"
@confirm="confirmLeave"
@close="cancelLeave"
:closeClass="false"
:closeText="$gettext('Auf Seite bleiben')"
:confirmText="$gettext('Seite verlassen')"
:title="$gettext('Ungespeicherte Änderungen')"
:question="$gettext('Es gibt ungespeicherte Änderungen. Möchten Sie die Seite wirklich verlassen?')"
>
<template #dialogButtons>
<button v-if="props.onSave" class="button" @click="saveAndLeave">
{{ $gettext('Speichern & Verlassen') }}
</button>
</template>
</StudipDialog>
</template>
<script setup>
import { ref, onMounted, onUnmounted } from 'vue';
import StudipDialog from './StudipDialog.vue';
const props = defineProps({
hasUnsavedChanges: {
type: Boolean,
required: true,
},
onSave: {
type: Function,
required: false,
},
});
const showModal = ref(false);
const pendingHref = ref(null);
function onClick(e) {
const link = e.target.closest('a[href]');
if (!link || link.target === '_blank') {
return;
}
const href = link.href;
if (props.hasUnsavedChanges) {
e.preventDefault();
pendingHref.value = href;
showModal.value = true;
}
}
function confirmLeave() {
window.removeEventListener('beforeunload', onBeforeUnload);
showModal.value = false;
window.location.href = pendingHref.value;
}
function cancelLeave() {
showModal.value = false;
pendingHref.value = null;
}
function onBeforeUnload(e) {
if (props.hasUnsavedChanges) {
e.preventDefault();
e.returnValue = '';
return '';
}
}
async function saveAndLeave() {
if (typeof props.onSave === 'function') {
try {
await props.onSave();
window.removeEventListener('beforeunload', onBeforeUnload);
window.location.href = pendingHref.value;
} catch (e) {
console.error('Speichern fehlgeschlagen:', e);
}
}
}
onMounted(() => {
document.addEventListener('click', onClick);
window.addEventListener('beforeunload', onBeforeUnload);
});
onUnmounted(() => {
document.removeEventListener('click', onClick);
window.removeEventListener('beforeunload', onBeforeUnload);
});
</script>
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