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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | 48x 48x 48x 48x 11599x 11599x 11599x 5687x 5687x 10102x 10102x 10102x 8228x 8228x 8228x 1874x 1874x 1874x 5687x 5052x 48x 934x 934x 934x 934x 934x 1267x 934x 48x 12060x 10120x 10120x 10120x 10120x 10120x 15476x 15476x 15476x 10120x 48x 4380x 1459x 525x 525x 525x 525x 659x 659x 659x 659x 416x 525x 525x 525x 688x 688x 381x 525x 436x | import {isEmpty} from '@jsonjoy.com/util/lib/isEmpty';
import {PersistedSlice} from '../peritext/slice/PersistedSlice';
import {SliceBehavior} from '../peritext/slice/constants';
import type {OverlayPoint} from '../peritext/overlay/OverlayPoint';
import type {QuillDeltaAttributes} from './types';
import type {PathStep} from '@jsonjoy.com/json-pointer';
export const getAttributes = (overlayPoint: OverlayPoint): QuillDeltaAttributes | undefined => {
const layers = overlayPoint.layers;
const layerLength = layers.length;
if (!layerLength) return;
const attributes: QuillDeltaAttributes = {};
for (let i = 0; i < layerLength; i++) {
const slice = layers[i];
Iif (!(slice instanceof PersistedSlice)) continue;
switch (slice.behavior) {
case SliceBehavior.One: {
const tag = slice.type as PathStep;
if (tag) attributes[tag] = slice.data();
break;
}
case SliceBehavior.Erase: {
const tag = slice.type as PathStep;
if (tag) delete attributes[tag];
break;
}
}
}
if (isEmpty(attributes)) return undefined;
return attributes;
};
const eraseAttributes = (attr: QuillDeltaAttributes | undefined): Record<string | number, null> | undefined => {
Iif (!attr) return;
const keys = Object.keys(attr);
const length = keys.length;
Iif (!length) return;
const erased: Record<string | number, null> = {};
for (let i = 0; i < length; i++) erased[keys[i]] = null;
return erased;
};
export const removeErasures = (attr: QuillDeltaAttributes | undefined): QuillDeltaAttributes | undefined => {
if (!attr) return;
const keys = Object.keys(attr);
const length = keys.length;
Iif (!length) return;
const cleaned: QuillDeltaAttributes = {};
for (let i = 0; i < length; i++) {
const key = keys[i];
const value = attr[key];
if (value !== null) cleaned[key] = value;
}
return isEmpty(cleaned) ? undefined : cleaned;
};
export const diffAttributes = (
oldAttributes: QuillDeltaAttributes | undefined,
newAttributes: QuillDeltaAttributes | undefined,
): QuillDeltaAttributes | undefined => {
if (!oldAttributes) return removeErasures(newAttributes);
if (!newAttributes) return eraseAttributes(oldAttributes);
const diff: QuillDeltaAttributes = {};
const keys = Object.keys(newAttributes);
const length = keys.length;
for (let i = 0; i < length; i++) {
const key = keys[i];
const newValue = newAttributes[key];
const oldValue = oldAttributes[key];
if (newValue === oldValue) continue;
diff[key] = newValue;
}
const oldKeys = Object.keys(oldAttributes);
const oldLength = oldKeys.length;
for (let i = 0; i < oldLength; i++) {
const key = oldKeys[i];
// tslint:disable-next-line:triple-equals
if (newAttributes[key] !== undefined) continue;
diff[key] = null;
}
if (isEmpty(diff)) return undefined;
return diff;
};
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