editor.js/src/components/block-tunes/block-tune-move-up.ts
Kirk Douglas Jr 9ae96b9e17
fix(move-up-tune): scroll up offset for blocks above viewport (#2298)
* fix: scroll up offset for blocks above viewport

* Update CHANGELOG.md

* Update CHANGELOG.md

---------

Co-authored-by: Peter Savchenko <specc.dev@gmail.com>
2023-03-14 00:09:04 +03:00

96 lines
2.5 KiB
TypeScript

/**
* @class MoveUpTune
* @classdesc Editor's default tune that moves up selected block
* @copyright <CodeX Team> 2018
*/
import { API, BlockTune } from '../../../types';
import { IconChevronUp } from '@codexteam/icons';
import { TunesMenuConfig } from '../../../types/tools';
/**
*
*/
export default class MoveUpTune implements BlockTune {
/**
* Set Tool is Tune
*/
public static readonly isTune = true;
/**
* Property that contains Editor.js API methods
*
* @see {@link docs/api.md}
*/
private readonly api: API;
/**
* Styles
*/
private CSS = {
animation: 'wobble',
};
/**
* MoveUpTune constructor
*
* @param {API} api - Editor's API
*/
constructor({ api }) {
this.api = api;
}
/**
* Tune's appearance in block settings menu
*/
public render(): TunesMenuConfig {
return {
icon: IconChevronUp,
title: this.api.i18n.t('Move up'),
onActivate: (): void => this.handleClick(),
name: 'move-up',
};
}
/**
* Move current block up
*/
public handleClick(): void {
const currentBlockIndex = this.api.blocks.getCurrentBlockIndex();
const currentBlock = this.api.blocks.getBlockByIndex(currentBlockIndex);
const previousBlock = this.api.blocks.getBlockByIndex(currentBlockIndex - 1);
if (currentBlockIndex === 0 || !currentBlock || !previousBlock) {
throw new Error('Unable to move Block up since it is already the first');
}
const currentBlockElement = currentBlock.holder;
const previousBlockElement = previousBlock.holder;
/**
* Here is two cases:
* - when previous block has negative offset and part of it is visible on window, then we scroll
* by window's height and add offset which is mathematically difference between two blocks
*
* - when previous block is visible and has offset from the window,
* than we scroll window to the difference between this offsets.
*/
const currentBlockCoords = currentBlockElement.getBoundingClientRect(),
previousBlockCoords = previousBlockElement.getBoundingClientRect();
let scrollUpOffset;
if (previousBlockCoords.top > 0) {
scrollUpOffset = Math.abs(currentBlockCoords.top) - Math.abs(previousBlockCoords.top);
} else {
scrollUpOffset = Math.abs(currentBlockCoords.top) + previousBlockCoords.height;
}
window.scrollBy(0, -1 * scrollUpOffset);
/** Change blocks positions */
this.api.blocks.move(currentBlockIndex - 1);
this.api.toolbar.toggleBlockSettings(true);
}
}