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142 changes: 142 additions & 0 deletions
142
src/plugins/console/public/application/containers/embeddable/console_resize_button.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License | ||
| * 2.0 and the Server Side Public License, v 1; you may not use this file except | ||
| * in compliance with, at your election, the Elastic License 2.0 or the Server | ||
| * Side Public License, v 1. | ||
| */ | ||
|
|
||
| import React, { useCallback, useEffect, useState, useRef } from 'react'; | ||
| import { EuiResizableButton, useEuiTheme, keys, EuiThemeComputed } from '@elastic/eui'; | ||
|
|
||
| const CONSOLE_MIN_HEIGHT = 200; | ||
|
|
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| const getMouseOrTouchY = ( | ||
| e: TouchEvent | MouseEvent | React.MouseEvent | React.TouchEvent | ||
| ): number => { | ||
| // Some Typescript fooling is needed here | ||
| const y = (e as TouchEvent).targetTouches | ||
| ? (e as TouchEvent).targetTouches[0].pageY | ||
| : (e as MouseEvent).pageY; | ||
| return y; | ||
| }; | ||
|
|
||
| export interface EmbeddedConsoleResizeButtonProps { | ||
| consoleHeight: number; | ||
| setConsoleHeight: React.Dispatch<React.SetStateAction<number>>; | ||
| } | ||
|
|
||
| export function getCurrentConsoleMaxSize(euiTheme: EuiThemeComputed<{}>) { | ||
| const euiBaseSize = parseInt(euiTheme.size.base, 10); | ||
| const winHeight = window.innerHeight; | ||
| const bodyStyle = getComputedStyle(document.body); | ||
| const headerOffset = parseInt(bodyStyle.getPropertyValue('--euiFixedHeadersOffset') ?? '0px', 10); | ||
|
|
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| // We leave a buffer of baseSize to allow room for the user to hover on the top border for resizing | ||
| return Math.max(winHeight - headerOffset - euiBaseSize, CONSOLE_MIN_HEIGHT); | ||
| } | ||
|
|
||
| export const EmbeddedConsoleResizeButton = ({ | ||
| consoleHeight, | ||
| setConsoleHeight, | ||
| }: EmbeddedConsoleResizeButtonProps) => { | ||
| const { euiTheme } = useEuiTheme(); | ||
| const [maxConsoleHeight, setMaxConsoleHeight] = useState<number>(800); | ||
| const initialConsoleHeight = useRef(consoleHeight); | ||
| const initialMouseY = useRef(0); | ||
|
|
||
| useEffect(() => { | ||
| function handleResize() { | ||
| const newMaxConsoleHeight = getCurrentConsoleMaxSize(euiTheme); | ||
| // Calculate and save the console max height. This is the window height minus the header | ||
| // offset minuse the base size to allow a small buffer for grabbing the resize button. | ||
| if (maxConsoleHeight !== newMaxConsoleHeight) { | ||
| setMaxConsoleHeight(newMaxConsoleHeight); | ||
| } | ||
| if (consoleHeight > newMaxConsoleHeight && newMaxConsoleHeight > CONSOLE_MIN_HEIGHT) { | ||
| // When the current console height is greater than the new max height, | ||
| // we resize the console to the max height. This will ensure there is not weird | ||
| // behavior with the drag resize. | ||
| setConsoleHeight(newMaxConsoleHeight); | ||
| } | ||
| } | ||
|
|
||
| handleResize(); | ||
| window.addEventListener('resize', handleResize); | ||
| return () => window.removeEventListener('resize', handleResize); | ||
| }, [maxConsoleHeight, euiTheme, consoleHeight, setConsoleHeight]); | ||
| const onResizeMouseMove = useCallback( | ||
| (e: MouseEvent | TouchEvent) => { | ||
| const currentMouseY = getMouseOrTouchY(e); | ||
| const mouseOffset = (currentMouseY - initialMouseY.current) * -1; | ||
| const changedConsoleHeight = initialConsoleHeight.current + mouseOffset; | ||
|
|
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| const newConsoleHeight = Math.min( | ||
| Math.max(changedConsoleHeight, CONSOLE_MIN_HEIGHT), | ||
| maxConsoleHeight | ||
| ); | ||
|
|
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| setConsoleHeight(newConsoleHeight); | ||
| }, | ||
| [maxConsoleHeight, setConsoleHeight] | ||
| ); | ||
| const onResizeMouseUp = useCallback( | ||
| (e: MouseEvent | TouchEvent) => { | ||
| initialMouseY.current = 0; | ||
|
|
||
| window.removeEventListener('mousemove', onResizeMouseMove); | ||
| window.removeEventListener('mouseup', onResizeMouseUp); | ||
| window.removeEventListener('touchmove', onResizeMouseMove); | ||
| window.removeEventListener('touchend', onResizeMouseUp); | ||
| }, | ||
| [onResizeMouseMove] | ||
| ); | ||
| const onResizeMouseDown = useCallback( | ||
| (e: React.MouseEvent | React.TouchEvent) => { | ||
| initialMouseY.current = getMouseOrTouchY(e); | ||
| initialConsoleHeight.current = consoleHeight; | ||
|
|
||
| // Window event listeners instead of React events are used | ||
| // in case the user's mouse leaves the component | ||
| window.addEventListener('mousemove', onResizeMouseMove); | ||
| window.addEventListener('mouseup', onResizeMouseUp); | ||
| window.addEventListener('touchmove', onResizeMouseMove); | ||
| window.addEventListener('touchend', onResizeMouseUp); | ||
| }, | ||
| [consoleHeight, onResizeMouseUp, onResizeMouseMove] | ||
| ); | ||
| const onResizeKeyDown = useCallback( | ||
| (e: React.KeyboardEvent) => { | ||
| const KEYBOARD_OFFSET = 10; | ||
|
|
||
| switch (e.key) { | ||
| case keys.ARROW_UP: | ||
| e.preventDefault(); // Safari+VO will screen reader navigate off the button otherwise | ||
| setConsoleHeight((height) => Math.min(height + KEYBOARD_OFFSET, maxConsoleHeight)); | ||
| break; | ||
| case keys.ARROW_DOWN: | ||
| e.preventDefault(); // Safari+VO will screen reader navigate off the button otherwise | ||
| setConsoleHeight((height) => Math.max(height - KEYBOARD_OFFSET, CONSOLE_MIN_HEIGHT)); | ||
| } | ||
| }, | ||
| [maxConsoleHeight, setConsoleHeight] | ||
| ); | ||
| const onResizeDoubleClick = useCallback(() => { | ||
| if (consoleHeight < maxConsoleHeight) { | ||
| setConsoleHeight(maxConsoleHeight); | ||
| } else { | ||
| setConsoleHeight(maxConsoleHeight / 2); | ||
| } | ||
| }, [consoleHeight, maxConsoleHeight, setConsoleHeight]); | ||
|
|
||
| return ( | ||
| <EuiResizableButton | ||
| indicator="border" | ||
| isHorizontal={false} | ||
| onMouseDown={onResizeMouseDown} | ||
| onTouchStart={onResizeMouseDown} | ||
| onKeyDown={onResizeKeyDown} | ||
| onDoubleClick={onResizeDoubleClick} | ||
| /> | ||
| ); | ||
| }; |
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