Michael Telatynski
68 lines
2.3 KiB
TypeScript
68 lines
2.3 KiB
TypeScript
/*
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Copyright 2019 - 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { BaseDistributor } from "./fixed";
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import ResizeItem from "../item";
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import Resizer, { IConfig } from "../resizer";
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import Sizer from "../sizer";
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export interface ICollapseConfig extends IConfig {
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toggleSize: number;
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onCollapsed?(collapsed: boolean, id: string | null, element: HTMLElement): void;
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isItemCollapsed(element: HTMLElement): boolean;
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}
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export class CollapseItem extends ResizeItem<ICollapseConfig> {
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public notifyCollapsed(collapsed: boolean): void {
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this.resizer.config?.onCollapsed?.(collapsed, this.id, this.domNode);
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}
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public get isCollapsed(): boolean {
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return this.resizer.config?.isItemCollapsed?.(this.domNode) ?? false;
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}
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}
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export default class CollapseDistributor extends BaseDistributor<ICollapseConfig, CollapseItem> {
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public static createItem(
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resizeHandle: HTMLDivElement,
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resizer: Resizer<ICollapseConfig, CollapseItem>,
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sizer: Sizer,
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container?: HTMLElement,
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): CollapseItem {
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return new CollapseItem(resizeHandle, resizer, sizer, container);
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}
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private readonly toggleSize: number | undefined;
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private isCollapsed: boolean;
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public constructor(item: CollapseItem) {
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super(item);
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this.toggleSize = item.resizer?.config?.toggleSize;
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this.isCollapsed = item.isCollapsed;
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}
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public resize(newSize: number): void {
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const isCollapsedSize = !!this.toggleSize && newSize < this.toggleSize;
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if (isCollapsedSize !== this.isCollapsed) {
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this.isCollapsed = isCollapsedSize;
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this.item.notifyCollapsed(isCollapsedSize);
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}
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if (!isCollapsedSize) {
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super.resize(newSize);
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}
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}
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}
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