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feat: introduce frames (#6123)

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Co-authored-by: dwelle <luzar.david@gmail.com>
This commit is contained in:
Ryan Di 2023-06-15 00:42:01 +08:00 • committed by GitHub
parent 4d7d96eb7b
commit 81ebf82979
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GPG key ID: 4AEE18F83AFDEB23
78 changed files with 4563 additions and 480 deletions
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52
src/scene/Scene.ts
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@ -2,9 +2,15 @@ import {
ExcalidrawElement,
NonDeletedExcalidrawElement,
NonDeleted,
ExcalidrawFrameElement,
} from "../element/types";
import { getNonDeletedElements, isNonDeletedElement } from "../element";
import {
getNonDeletedElements,
getNonDeletedFrames,
isNonDeletedElement,
} from "../element";
import { LinearElementEditor } from "../element/linearElementEditor";
import { isFrameElement } from "../element/typeChecks";
type ElementIdKey = InstanceType<typeof LinearElementEditor>["elementId"];
type ElementKey = ExcalidrawElement | ElementIdKey;
@ -12,6 +18,10 @@ type ElementKey = ExcalidrawElement | ElementIdKey;
type SceneStateCallback = () => void;
type SceneStateCallbackRemover = () => void;
// ideally this would be a branded type but it'd be insanely hard to work with
// in our codebase
export type ExcalidrawElementsIncludingDeleted = readonly ExcalidrawElement[];
const isIdKey = (elementKey: ElementKey): elementKey is ElementIdKey => {
if (typeof elementKey === "string") {
return true;
@ -55,6 +65,8 @@ class Scene {
private nonDeletedElements: readonly NonDeletedExcalidrawElement[] = [];
private elements: readonly ExcalidrawElement[] = [];
private nonDeletedFrames: readonly NonDeleted<ExcalidrawFrameElement>[] = [];
private frames: readonly ExcalidrawFrameElement[] = [];
private elementsMap = new Map<ExcalidrawElement["id"], ExcalidrawElement>();
getElementsIncludingDeleted() {
@ -65,6 +77,14 @@ class Scene {
return this.nonDeletedElements;
}
getFramesIncludingDeleted() {
return this.frames;
}
getNonDeletedFrames(): readonly NonDeleted<ExcalidrawFrameElement>[] {
return this.nonDeletedFrames;
}
getElement<T extends ExcalidrawElement>(id: T["id"]): T | null {
return (this.elementsMap.get(id) as T | undefined) || null;
}
@ -110,12 +130,19 @@ class Scene {
replaceAllElements(nextElements: readonly ExcalidrawElement[]) {
this.elements = nextElements;
const nextFrames: ExcalidrawFrameElement[] = [];
this.elementsMap.clear();
nextElements.forEach((element) => {
if (isFrameElement(element)) {
nextFrames.push(element);
}
this.elementsMap.set(element.id, element);
Scene.mapElementToScene(element, this);
});
this.nonDeletedElements = getNonDeletedElements(this.elements);
this.frames = nextFrames;
this.nonDeletedFrames = getNonDeletedFrames(this.frames);
this.informMutation();
}
@ -165,6 +192,29 @@ class Scene {
this.replaceAllElements(nextElements);
}
insertElementsAtIndex(elements: ExcalidrawElement[], index: number) {
if (!Number.isFinite(index) || index < 0) {
throw new Error(
"insertElementAtIndex can only be called with index >= 0",
);
}
const nextElements = [
...this.elements.slice(0, index),
...elements,
...this.elements.slice(index),
];
this.replaceAllElements(nextElements);
}
addNewElement = (element: ExcalidrawElement) => {
if (element.frameId) {
this.insertElementAtIndex(element, this.getElementIndex(element.frameId));
} else {
this.replaceAllElements([...this.elements, element]);
}
};
getElementIndex(elementId: string) {
return this.elements.findIndex((element) => element.id === elementId);
}