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joplin/packages/app-desktop/services/sortOrder/notesSortOrderUtils.ts

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import Setting from '@joplin/lib/models/Setting';
let fields: string[] = null;
let perFieldReverse: { [field: string]: boolean } = null;
export const notesSortOrderFieldArray = (): string[] => {
// The order of the fields is strictly determinate.
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if (fields === null) {
fields = Setting.enumOptionValues('notes.sortOrder.field').sort().reverse();
}
return fields;
};
export const notesSortOrderNextField = (currentField: string) => {
const fields = notesSortOrderFieldArray();
const index = fields.indexOf(currentField);
if (index < 0) {
return currentField;
} else {
return fields[(index + 1) % fields.length];
}
};
export const setNotesSortOrder = (field?: string, reverse?: boolean) => {
// field: Sort order's field. undefined means changing a field cyclicly.
// reverse: whether the sort order is reversed or not. undefined means toggling.
let nextField = field;
let nextReverse = reverse;
const currentField = Setting.value('notes.sortOrder.field');
const currentReverse = Setting.value('notes.sortOrder.reverse');
const enabled = Setting.value('notes.perFieldReversalEnabled');
if (enabled) {
if (perFieldReverse === null) {
perFieldReverse = { ...Setting.value('notes.perFieldReverse') };
}
}
if (typeof field === 'undefined') {
if (typeof reverse === 'undefined') {
// If both arguments are undefined, the next field is selected.
nextField = notesSortOrderNextField(currentField);
} else {
nextField = currentField;
}
}
if (typeof reverse === 'undefined') {
if (enabled && perFieldReverse.hasOwnProperty(nextField)) {
nextReverse = !!perFieldReverse[nextField];
} else {
nextReverse = currentReverse;
}
}
if (currentField !== nextField) {
Setting.setValue('notes.sortOrder.field', nextField);
}
if (currentReverse !== nextReverse) {
Setting.setValue('notes.sortOrder.reverse', nextReverse);
}
if (enabled) {
// nextField is sane here.
nextReverse = !!nextReverse;
if (perFieldReverse[nextField] !== nextReverse) {
perFieldReverse[nextField] = nextReverse;
Setting.setValue('notes.perFieldReverse', { ...perFieldReverse });
}
}
};