billow | Query AWS data without API credentials | Runtime Evironment library
kandi X-RAY | billow Summary
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- Handles the request
- Handles a complex DynamoDB response
- Helper method to handle a complete ElasticCache cluster
- Handle complex EC2 responses
- Increments the start counter
- Rebuilds the current instance
- Increments the counter by name
- The main method
- Returns private IP address
- Checks if the database is healthy
- Sets connection factories
- Checks if the given instance is a master master
- Returns the Azure cache ARN for a cache
- Obtains the ARN for an elasticsearch ARN
- Utility method to retrieve an ARNS ARN
billow Key Features
billow Examples and Code Snippets
Trending Discussions on billow
Trending Discussions on billow
QUESTION
I have made a dropdown menu using Material-ui Menu component. The problem is once that dropdown menu is open, the body scrollbar disappears and can not scroll over the page.
I tried to find answers but there are only a few answers for Popper, Popover or Select component but seems like no answer for Menu component.
DropDownMenu component is like this.
import React from 'react'
import Menu from '@material-ui/core/Menu'
import MuiMenuItem from '@material-ui/core/MenuItem'
import styled from 'styled-components'
import MoreVertIcon from '@material-ui/icons/MoreVert'
import IconButton from '@material-ui/core/IconButton'
import SendIcon from '@material-ui/icons/Send'
import ListItemIcon from '@material-ui/core/ListItemIcon'
import ListItemText from '@material-ui/core/ListItemText'
const MenuItem = styled(MuiMenuItem)`
justify-content: flex-end;
`
export default function DropDownMenu() {
const [anchorEl, setAnchorEl] = React.useState(null)
const handleClick = (event) => {
setAnchorEl(event.currentTarget)
}
const handleClose = () => {
setAnchorEl(null)
}
return (
)
}
Sharpening code to Menu props is as following.
The working example can be seen https://codesandbox.io/s/billowing-cache-042j1?file=/src/App.js Thanks in advance.
ANSWER
Answered 2021-Sep-05 at 18:42You should use Popper
instead of Menu
. You should also create ref and use it for IconButton
or Button
.
import React from 'react'
import ClickAwayListener from '@material-ui/core/ClickAwayListener'
import Grow from '@material-ui/core/Grow'
import Paper from '@material-ui/core/Paper'
import Popper from '@material-ui/core/Popper'
import MenuItem from '@material-ui/core/MenuItem'
import MenuList from '@material-ui/core/MenuList'
import IconButton from '@material-ui/core/IconButton'
import MoreVertIcon from '@material-ui/icons/MoreVert'
import SendIcon from '@material-ui/icons/Send'
import ListItemIcon from '@material-ui/core/ListItemIcon'
import ListItemText from '@material-ui/core/ListItemText'
export default function DropDownMenu(props) {
const [open, setOpen] = React.useState(false)
const anchorRef = React.useRef(null)
const handleToggle = () => {
setOpen((prevOpen) => !prevOpen)
}
const handleClose = (event) => {
if (anchorRef.current && anchorRef.current.contains(event.target)) {
return
}
setOpen(false)
}
function handleListKeyDown(event) {
if (event.key === 'Tab') {
event.preventDefault()
setOpen(false)
}
}
const handleClick = () => {
// handle menu click here
setOpen(false)
}
return (
{({ TransitionProps, placement }) => (
)}
)
}
There is also an example code of it at Material UI Menus Documentation.
QUESTION
I have a image
field, and I want this file to be required only when image_old
field is empty and poster_type
is image
.
Here, the poster
type is a select box with two possible value script
or image
. Next, image_old
holds file name like picture.png
, this is the value of poster image
, and this will have value only in case of edit. (Its becauuse, I am using the same component for create and edit)
My code looks like:
import { useForm } from "react-hook-form";
import { yupResolver } from "@hookform/resolvers/yup";
import * as Yup from "yup";
export function App() {
const schema = Yup.object({
poster_type: Yup.string()
.required()
.oneOf(["image", "script"])
.label("Poster Type"),
image: Yup.mixed().when(["image_old", "poster_script"], {
is: (poster_script, image_old) => {
if (poster_script === "image" && image_old === "") {
return true;
}
},
then: (schema) =>
schema
.test("name", "Image is required", (value) => {
return value !== undefined && value[0] && value[0].name !== "";
})
.test("fileSize", "File must be less than 2MB", (value) => {
return value !== undefined && value[0] && value[0].size <= 2000000;
})
.test("type", "Only images are supported", (value) => {
return (
value !== undefined && value[0] && value[0].type.includes("image")
);
}),
otherwise: (schema) => schema.nullable()
})
});
const {
register,
handleSubmit,
formState: { errors }
} = useForm({
resolver: yupResolver(schema)
});
const onSubmit = async (input) => {
console.log("input", input);
};
// const item = {
// id: 12,
// image_old: "old_image.png"
// };
return (
-- Select --
Image
Script
{errors["poster_type"]?.message}
{errors["image"]?.message}
);
}
Long story short:
- When users select
image
as poster_type, it should shows,image is required
- if
image_old
field is not empty, it should not be throwing, required error message, should show only whenposter_type
isimage
andimage_old
should not be empty.
Here is the sandbox link.
ANSWER
Answered 2022-Feb-25 at 19:59i think its just a typo on your image
validator I just changed it to this and it seems to work
image: Yup.mixed().when(["image_old", "poster_type"], {
is: (image_old, poster_type) => {
if (poster_type === "image" && image_old === "") {
return true;
}
},
QUESTION
I am trying to make a chat application with scaledrone. I was following this tutorial: https://www.scaledrone.com/blog/javascript-chat-room-tutorial/ but after setting up the basic chat, I wanted to let users define their own name. So I made an input box and then tried using js to take the input box value and assign it to a variable. And then for the name part of the chat application, instead of using the random name function I was using earlier. However, I got the error "can not read properties of null(reading addEventListener) in my console and the submit button did not show up at all. What did I do wrong? The code I used is in pastebin links below. The scaledrone documentation is here: https://www.scaledrone.com/docs/api-clients/javascript Thanks in advance. also, I added the raw text of my javascript file below because stack overflow won't let me post without adding some code(first time posting to stack overflow lol).
const CLIENT_ID = 'keECa1lpVtgABa1F';
const splash=document.querySelector('.splash');
const stuffjs=document.querySelector('.stuff');
var yourname;
/*function createMenuItem(name) {
let inputname = document.createElement('input');
inputname.placeholder = name;
inputname.className='inputnamefield';
return inputname;
}*/
/*function createButton(btnname){
let btn = document.createElement('input');
btn.type = 'submit';
btn.className='submitbtn';
return btn;
}*/
const inputnameagain=document.querySelector('.inputnamefield');
const buttoon=document.querySelector('.submitbtn');
buttoon.addEventListener('click',(e) => {
setTimeout(()=>{
yourname=inputboxstuff.value()
},1);
});
/*document.addEventListener('DOMContentLoaded',(e)=>{
setTimeout(()=>{
splash.classList.add('display-none');
},2000);
})
splash.addEventListener('mousedown',
(e)=>{
setTimeout(()=>{
splash.parentElement.removeChild(splash);
},1);
})*/
const drone = new ScaleDrone(CLIENT_ID, {
data: { // Will be sent out as clientData via events
name: yourname,
color: getRandomColor(),
},
});
let members = [];
drone.on('open', error => {
if (error) {
return console.error(error);
}
console.log('Successfully connected to Scaledrone');
const room = drone.subscribe('observable-room');
room.on('open', error => {
if (error) {
return console.error(error);
}
console.log('Successfully joined room');
});
room.on('members', m => {
members = m;
updateMembersDOM();
});
room.on('member_join', member => {
members.push(member);
updateMembersDOM();
});
room.on('member_leave', ({id}) => {
const index = members.findIndex(member => member.id === id);
members.splice(index, 1);
updateMembersDOM();
});
room.on('data', (text, member) => {
if (member) {
addMessageToListDOM(text, member);
} else {
// Message is from server
}
});
});
drone.on('close', event => {
console.log('Connection was closed', event);
});
drone.on('error', error => {
console.error(error);
});
function getRandomName() {
const adjs = ["autumn", "hidden", "bitter", "misty", "silent", "empty", "dry", "dark", "summer", "icy", "delicate", "quiet", "white", "cool", "spring", "winter", "patient", "twilight", "dawn", "crimson", "wispy", "weathered", "blue", "billowing", "broken", "cold", "damp", "falling", "frosty", "green", "long", "late", "lingering", "bold", "little", "morning", "muddy", "old", "red", "rough", "still", "small", "sparkling", "throbbing", "shy", "wandering", "withered", "wild", "black", "young", "holy", "solitary", "fragrant", "aged", "snowy", "proud", "floral", "restless", "divine", "polished", "ancient", "purple", "lively", "nameless"];
const nouns = ["waterfall", "river", "breeze", "moon", "rain", "wind", "sea", "morning", "snow", "lake", "sunset", "pine", "shadow", "leaf", "dawn", "glitter", "forest", "hill", "cloud", "meadow", "sun", "glade", "bird", "brook", "butterfly", "bush", "dew", "dust", "field", "fire", "flower", "firefly", "feather", "grass", "haze", "mountain", "night", "pond", "darkness", "snowflake", "silence", "sound", "sky", "shape", "surf", "thunder", "violet", "water", "wildflower", "wave", "water", "resonance", "sun", "wood", "dream", "cherry", "tree", "fog", "frost", "voice", "paper", "frog", "smoke", "star"];
return (
adjs[Math.floor(Math.random() * adjs.length)] +
"_" +
nouns[Math.floor(Math.random() * nouns.length)]
);
}
function getRandomColor() {
return '#' + Math.floor(Math.random() * 0xFFFFFF).toString(16);
}
//------------- DOM STUFF
const DOM = {
membersCount: document.querySelector('.members-count'),
membersList: document.querySelector('.members-list'),
messages: document.querySelector('.messages'),
input: document.querySelector('.message-form__input'),
form: document.querySelector('.message-form'),
};
DOM.form.addEventListener('submit', sendMessage);
function sendMessage() {
const value = DOM.input.value;
if (value === '') {
return;
}
DOM.input.value = '';
drone.publish({
room: 'observable-room',
message: value,
});
}
function createMemberElement(member) {
const { name, color } = member.clientData;
const el = document.createElement('div');
el.appendChild(document.createTextNode(name));
el.className = 'member';
el.style.color = color;
return el;
}
function updateMembersDOM() {
DOM.membersCount.innerText = `${members.length} users in room:`;
DOM.membersList.innerHTML = '';
members.forEach(member =>
DOM.membersList.appendChild(createMemberElement(member))
);
}
function createMessageElement(text, member) {
const el = document.createElement('div');
el.appendChild(createMemberElement(member));
el.appendChild(document.createTextNode(text));
el.className = 'message';
return el;
}
function addMessageToListDOM(text, member) {
const el = DOM.messages;
const wasTop = el.scrollTop === el.scrollHeight - el.clientHeight;
el.appendChild(createMessageElement(text, member));
if (wasTop) {
el.scrollTop = el.scrollHeight - el.clientHeight;
}
}
ANSWER
Answered 2022-Feb-10 at 07:40How to store a input box value in a variable
const inputnamefield = document.querySelector('.inputnamefield');
const button = document.querySelector('.submitbtn');
button.addEventListener('click', (e) => {
setTimeout(() => {
const yourname = inputnamefield.value
}, 1);
})
QUESTION
For some reason combo of useReducer and useContext is not working out for me, as you can see from the code I'm trying to change the value using the onChange and it works for the first time but the second time everything crashes. Here's link to the code https://codesandbox.io/s/billowing-field-k7lif?file=/src/App.css Ps: App.js , and Surcharge are the files to check out. (ignore the comments)
ANSWER
Answered 2022-Jan-26 at 19:34Your problem is that your reducer is never returning the updated state and is implicitly returning undefined
.
function reducer(state, newState) {
switch (newState.type) {
case "calcCartValue":
state.cartValue = newState.value;
}
}
Should be
function reducer(state, action) {
switch (action.type) {
case "calcCartValue":
return { ...state, cartValue: action.value };
default:
throw new Error(`${action.type} action is not supported`);
}
}
I suggest taking another look at the docs here
QUESTION
I've been trying to solve the following problem : I try to upgrade this Frontend Mentor project https://haydee75.github.io/galleria/ from React Router v5 to v6. I tried to replace the code between with :
} />
} />
but it does not work as when I am on a Paint page when clicking on next (or prev) button it adds url to the existing one so the route is wrong. I also tried :
}>
} />
But it does not work either.
Below are relevant components :
import "./Gallery.scss";
import { Link } from "react-router-dom";
const Gallery = ({ datas, clickEvent }) => {
return (
{datas.map((data, index) => {
return (
);
})}
);
};
export default Gallery;
import { useState } from "react";
import { Link, useParams } from "react-router-dom";
import "./Paint.scss";
import Modal from "../Modal/Modal";
const Paint = ({ datas }) => {
let { urlPath } = useParams();
const paint = datas.find((data) => data.urlPath === urlPath);
const nextSlide = datas.indexOf(paint) + 1;
const prevSlide = datas.indexOf(paint) - 1;
const [showModal, setShowModal] = useState(false);
const handleModal = () => {
setShowModal(!showModal);
};
const color1 = "#000";
const color2 = "#ccc";
const indexPaint = datas.indexOf(paint) + 1;
const datasLenght = datas.length;
const blackLineWidth = Math.round((indexPaint * 100) / datasLenght);
const greyLineWidth = 100 - blackLineWidth;
return (
{paint ? (
<>
View Image
{showModal && (
)}
{paint.name}
{paint.artist.name}
{paint.year}
{paint.description}
Got to source
{paint.name}
{paint.artist.name}
{prevSlide <= -1 ? (
) : (
)}
{nextSlide >= 15 ? (
) : (
)}
) : (
{urlPath} is not a planet
)}
);
};
export default Paint;
Here is App.js parent component rendering the routes
import data from "./data.json";
import "./App.scss";
import { Switch, Route } from "react-router-dom";
import Menu from "./components/Menu/Menu";
import Gallery from "./components/Gallery/Gallery";
import Paint from "./components/Paint/Paint";
import { useState } from "react";
const App = () => {
data.forEach((d) => {
d["urlPath"] = d.name.replace(/\s/g, "-");
});
const [slideShow, setSlideShow] = useState(true);
const handleSlideShow = () => {
setSlideShow(!slideShow);
};
return (
);
};
export default App;
Then the data.json file from where data values are coming :
[
{
"name": "Starry Night",
"year": 1889,
"description": "Although The Starry Night was painted during the day in Van Gogh's ground-floor studio, it would be inaccurate to state that the picture was painted from memory. The view has been identified as the one from his bedroom window, facing east, a view which Van Gogh painted variations of no fewer than twenty-one times, including The Starry Night. \"Through the iron-barred window,\" he wrote to his brother, Theo, around 23 May 1889, \"I can see an enclosed square of wheat ... above which, in the morning, I watch the sun rise in all its glory.\"",
"source": "https://en.wikipedia.org/wiki/The_Starry_Night",
"artist": {
"image": "./assets/starry-night/artist.jpg",
"name": "Vincent Van Gogh"
},
"images": {
"thumbnail": "./assets/starry-night/thumbnail.jpg",
"hero": {
"small": "./assets/starry-night/hero-small.jpg",
"large": "./assets/starry-night/hero-large.jpg"
},
"gallery": "./assets/starry-night/gallery.jpg"
}
},
{
"name": "Girl with a Pearl Earring",
"year": 1665,
"description": "The painting is a tronie, the Dutch 17th-century description of a 'head' that was not meant to be a portrait. It depicts a European girl wearing an exotic dress, an oriental turban, and what was thought to be a very large pearl as an earring. In 2014, Dutch astrophysicist Vincent Icke raised doubts about the material of the earring and argued that it looks more like polished tin than pearl on the grounds of the specular reflection, the pear shape and the large size of the earring.",
"source": "https://en.wikipedia.org/wiki/Girl_with_a_Pearl_Earring",
"artist": {
"image": "./assets/girl-with-pearl-earring/artist.jpg",
"name": "Johannes Vermeer"
},
"images": {
"thumbnail": "./assets/girl-with-pearl-earring/thumbnail.jpg",
"hero": {
"small": "./assets/girl-with-pearl-earring/hero-small.jpg",
"large": "./assets/girl-with-pearl-earring/hero-large.jpg"
},
"gallery": "./assets/girl-with-pearl-earring/gallery.jpg"
}
},
{
"name": "Guernica",
"year": 1937,
"description": "The scene occurs within a room where, on the left, a wide-eyed bull stands over a grieving woman holding a dead child in her arms. In the center of the room a horse falls in agony with a large gaping hole in its side, as if it had just been run through by a spear or javelin. The horse appears to be wearing chain mail armor, decorated with vertical tally marks arranged in rows. A dead and dismembered soldier lies under the horse. The hand of his severed right arm grasps a shattered sword, from which a flower grows.",
"source": "https://en.wikipedia.org/wiki/Guernica_(Picasso)",
"artist": {
"image": "./assets/guernica/artist.jpg",
"name": "Pablo Picasso"
},
"images": {
"thumbnail": "./assets/guernica/thumbnail.jpg",
"hero": {
"small": "./assets/guernica/hero-small.jpg",
"large": "./assets/guernica/hero-large.jpg"
},
"gallery": "./assets/guernica/gallery.jpg"
}
},
{
"name": "Penitent Magdalene",
"year": 1625,
"description": "Penitent Magdalene is a painting by the Italian artist Artemisia Gentileschi. It hangs in Seville Cathedral. It has probably been in the cathedral since the late 17th century. The painting's first home was the collection of Fernando Enriquez Afan de Ribera, from 1626 to 1637. She returned to the subject later in the 1620s in Mary Magdalene as Melancholy.",
"source": "https://en.wikipedia.org/wiki/Penitent_Magdalene_(Artemisia_Gentileschi)",
"artist": {
"image": "./assets/penitent-magdalene/artist.jpg",
"name": "Artemisia Gentileschi"
},
"images": {
"thumbnail": "./assets/penitent-magdalene/thumbnail.jpg",
"hero": {
"small": "./assets/penitent-magdalene/hero-small.jpg",
"large": "./assets/penitent-magdalene/hero-large.jpg"
},
"gallery": "./assets/penitent-magdalene/gallery.jpg"
}
},
{
"name": "The Storm on the Sea of Galilee",
"year": 1633,
"description": "The painting, in vertical format, shows a close-up view of Christ's disciples struggling frantically against the heavy storm to regain control of their fishing boat. A huge wave beats the bow and rips the sail. One of the disciples is seen vomiting over the side. Another one, looking directly out at the viewer, is a self-portrait of the artist. Only Christ, depicted on the right, remains calm.",
"source": "https://en.wikipedia.org/wiki/The_Storm_on_the_Sea_of_Galilee",
"artist": {
"image": "./assets/the-storm-on-the-sea-of-galilee/artist.jpg",
"name": "Rembrandt"
},
"images": {
"thumbnail": "./assets/the-storm-on-the-sea-of-galilee/thumbnail.jpg",
"hero": {
"small": "./assets/the-storm-on-the-sea-of-galilee/hero-small.jpg",
"large": "./assets/the-storm-on-the-sea-of-galilee/hero-large.jpg"
},
"gallery": "./assets/the-storm-on-the-sea-of-galilee/gallery.jpg"
}
},
{
"name": "The Great Wave off Kanagawa",
"year": 1831,
"description": "The Great Wave off Kanagawa (Japanese: 神奈川沖浪裏, Hepburn: Kanagawa-oki Nami Ura, lit. \"Under the Wave off Kanagawa\"), also known as The Great Wave or simply The Wave, is a woodblock print by the Japanese ukiyo-e artist Hokusai. It was published sometime between 1829 and 1833 in the late Edo period as the first print in Hokusai's series Thirty-six Views of Mount Fuji. The image depicts an enormous wave threatening three boats off the coast in the Sagami Bay (Kanagawa Prefecture) while Mount Fuji rises in the background.",
"source": "https://en.wikipedia.org/wiki/The_Great_Wave_off_Kanagawa",
"artist": {
"image": "./assets/the-great-wave-off-kanagawa/artist.jpg",
"name": "Hokusai"
},
"images": {
"thumbnail": "./assets/the-great-wave-off-kanagawa/thumbnail.jpg",
"hero": {
"small": "./assets/the-great-wave-off-kanagawa/hero-small.jpg",
"large": "./assets/the-great-wave-off-kanagawa/hero-large.jpg"
},
"gallery": "./assets/the-great-wave-off-kanagawa/gallery.jpg"
}
},
{
"name": "Van Gogh Self-portrait",
"year": 1889,
"description": "This self-portrait was one of about 32 produced over a 10-year period, and these were an important part of his work as a painter; he painted himself because he often lacked the money to pay for models. He took the painting with him to Auvers-sur-Oise, near Paris, where he showed it to Dr. Paul Gachet, who thought it was \"absolutely fanatical\". Art historians are divided as to whether this painting or Self-portrait without beard is Van Gogh's final self-portrait. The art historians Ingo F. Walther and Jan Hulsker consider this to be the last.",
"source": "https://en.wikipedia.org/wiki/Van_Gogh_self-portrait_(1889)",
"artist": {
"image": "./assets/van-gogh-self-portrait/artist.jpg",
"name": "Vincent Van Gogh"
},
"images": {
"thumbnail": "./assets/van-gogh-self-portrait/thumbnail.jpg",
"hero": {
"small": "./assets/van-gogh-self-portrait/hero-small.jpg",
"large": "./assets/van-gogh-self-portrait/hero-large.jpg"
},
"gallery": "./assets/van-gogh-self-portrait/gallery.jpg"
}
},
{
"name": "The Sleeping Gypsy",
"year": 1897,
"description": "The Sleeping Gypsy (French: La Bohémienne endormie) is an 1897 oil painting by French Naïve artist Henri Rousseau (1844–1910). It is a fantastical depiction of a lion musing over a sleeping woman on a moonlit night. Rousseau first exhibited the painting at the 13th Salon des Indépendants, and tried unsuccessfully to sell it to the mayor of his hometown, Laval. Instead, it entered the private collection of a Parisian charcoal merchant where it remained until 1924, when it was discovered by the art critic Louis Vauxcelles.",
"source": "https://en.wikipedia.org/wiki/The_Sleeping_Gypsy",
"artist": {
"image": "./assets/the-sleeping-gypsy/artist.jpg",
"name": "Henri Rousseau"
},
"images": {
"thumbnail": "./assets/the-sleeping-gypsy/thumbnail.jpg",
"hero": {
"small": "./assets/the-sleeping-gypsy/hero-small.jpg",
"large": "./assets/the-sleeping-gypsy/hero-large.jpg"
},
"gallery": "./assets/the-sleeping-gypsy/gallery.jpg"
}
},
{
"name": "Lady with an Ermine",
"year": 1489,
"description": "The Lady with an Ermine (Italian: Dama con l'ermellino [ˈdaːma kon lermelˈliːno]; Polish: Dama z gronostajem) is a portrait painting widely attributed to the Italian Renaissance artist Leonardo da Vinci. Dated to c. 1489–1491, the work is painted in oils on a panel of walnut wood. Its subject is Cecilia Gallerani, a mistress of Ludovico Sforza (\"Il Moro\"), Duke of Milan; Leonardo was painter to the Sforza court at the time of its execution. It is one of only four surviving portraits of women painted by Leonardo, the others being Ginevra de' Benci, La Belle Ferronnière and the Mona Lisa",
"source": "https://en.wikipedia.org/wiki/Lady_with_an_Ermine",
"artist": {
"image": "./assets/lady-with-an-ermine/artist.jpg",
"name": "Leonardo da Vinci"
},
"images": {
"thumbnail": "./assets/lady-with-an-ermine/thumbnail.jpg",
"hero": {
"small": "./assets/lady-with-an-ermine/hero-small.jpg",
"large": "./assets/lady-with-an-ermine/hero-large.jpg"
},
"gallery": "./assets/lady-with-an-ermine/gallery.jpg"
}
},
{
"name": "The Night Café",
"year": 1888,
"description": "The Night Café (French: Le Café de nuit) is an oil painting created by Dutch artist Vincent van Gogh in September 1888 in Arles. Its title is inscribed lower right beneath the signature. The painting is owned by Yale University and is currently held at the Yale University Art Gallery in New Haven, Connecticut. The interior depicted is the Café de la Gare, 30 Place Lamartine, run by Joseph-Michel Ginoux and his wife Marie, who in November 1888 posed for Van Gogh's and Gauguin's Arlésienne; a bit later, Joseph Ginoux evidently posed for both artists, too.",
"source": "https://en.wikipedia.org/wiki/The_Night_Caf%C3%A9",
"artist": {
"image": "./assets/the-night-cafe/artist.jpg",
"name": "Vincent Van Gogh"
},
"images": {
"thumbnail": "./assets/the-night-cafe/thumbnail.jpg",
"hero": {
"small": "./assets/the-night-cafe/hero-small.jpg",
"large": "./assets/the-night-cafe/hero-large.jpg"
},
"gallery": "./assets/the-night-cafe/gallery.jpg"
}
},
{
"name": "The Basket of Apples",
"year": 1893,
"description": "The Basket of Apples (French: Le panier de pommes) is a still life oil painting by French artist Paul Cézanne, which he created c. 1893. The painting is particularly remarkable for its creative composition, which rejected realistic representation in favour of distorting objects to create multiple perspectives. This approach eventually influenced other art movements, including Fauvism and Cubism. It belongs to the Helen Birch Bartlett Memorial Collection of the Art Institute of Chicago.",
"source": "https://en.wikipedia.org/wiki/The_Basket_of_Apples",
"artist": {
"image": "./assets/the-basket-of-apples/artist.jpg",
"name": "Paul Cézanne"
},
"images": {
"thumbnail": "./assets/the-basket-of-apples/thumbnail.jpg",
"hero": {
"small": "./assets/the-basket-of-apples/hero-small.jpg",
"large": "./assets/the-basket-of-apples/hero-large.jpg"
},
"gallery": "./assets/the-basket-of-apples/gallery.jpg"
}
},
{
"name": "The Boy in the Red Vest",
"year": 1889,
"description": "Cézanne painted four oil portraits of this Italian boy in the red vest, all in different poses, which allowed him to study the relationship between the figure and space. The most famous of the four, and the one commonly referred to by this title, is the one which depicts the boy in a melancholic seated pose with his elbow on a table and his head cradled in his hand. It is currently held in Zürich, Switzerland. The other three portraits, of different poses, are in museums in the US",
"source": "https://en.wikipedia.org/wiki/The_Boy_in_the_Red_Vest",
"artist": {
"image": "./assets/the-boy-in-the-red-vest/artist.jpg",
"name": "Paul Cézanne"
},
"images": {
"thumbnail": "./assets/the-boy-in-the-red-vest/thumbnail.jpg",
"hero": {
"small": "./assets/the-boy-in-the-red-vest/hero-small.jpg",
"large": "./assets/the-boy-in-the-red-vest/hero-large.jpg"
},
"gallery": "./assets/the-boy-in-the-red-vest/gallery.jpg"
}
},
{
"name": "Arnolfini Portrait",
"year": 1434,
"description": "It is considered one of the most original and complex paintings in Western art, because of its beauty, complex iconography, geometric orthogonal perspective, and expansion of the picture space with the use of a mirror. According to Ernst Gombrich \"in its own way it was as new and revolutionary as Donatello's or Masaccio's work in Italy. A simple corner of the real world had suddenly been fixed on to a panel as if by magic ... For the first time in history the artist became the perfect eye-witness in the truest sense of the term\".",
"source": "https://en.wikipedia.org/wiki/Arnolfini_Portrait",
"artist": {
"image": "./assets/arnolfini-portrait/artist.jpg",
"name": "Jan van Eyck"
},
"images": {
"thumbnail": "./assets/arnolfini-portrait/thumbnail.jpg",
"hero": {
"small": "./assets/arnolfini-portrait/hero-small.jpg",
"large": "./assets/arnolfini-portrait/hero-large.jpg"
},
"gallery": "./assets/arnolfini-portrait/gallery.jpg"
}
},
{
"name": "Mona Lisa",
"year": 1503,
"description": "The Mona Lisa (/ˌmoʊnə ˈliːsə/; italian: La Gioconda [la dʒoˈkonda] or Monna Lisa [ˈmɔnna ˈliːza]) is a half-length portrait painting by Italian artist Leonardo da Vinci. Considered an archetypal masterpiece of the Italian Renaissance, it has been described as \"the best known, the most visited, the most written about, the most sung about, the most parodied work of art in the world\". The painting's novel qualities include the subject's enigmatic expression, the monumentality of the composition, the subtle modelling of forms, and the atmospheric illusionism.",
"source": "https://en.wikipedia.org/wiki/Mona_Lisa",
"artist": {
"image": "./assets/mona-lisa/artist.jpg",
"name": "Leonardo da Vinci"
},
"images": {
"thumbnail": "./assets/mona-lisa/thumbnail.jpg",
"hero": {
"small": "./assets/mona-lisa/hero-small.jpg",
"large": "./assets/mona-lisa/hero-large.jpg"
},
"gallery": "./assets/mona-lisa/gallery.jpg"
}
},
{
"name": "The Swing",
"year": 1767,
"description": "The painting depicts an elegant young woman on a swing. A smiling young man, hiding in the bushes on the left, watches her from a vantage point that allows him to see up into her billowing dress, where his arm is pointed with hat in hand. A smiling older man, who is nearly hidden in the shadows on the right, propels the swing with a pair of ropes. The older man appears to be unaware of the young man. As the young lady swings high, she throws her left leg up, allowing her dainty shoe to fly through the air.",
"source": "https://en.wikipedia.org/wiki/The_Swing_(Fragonard)",
"artist": {
"image": "./assets/the-swing/artist.jpg",
"name": "Jean-Honoré Fragonard"
},
"images": {
"thumbnail": "./assets/the-swing/thumbnail.jpg",
"hero": {
"small": "./assets/the-swing/hero-small.jpg",
"large": "./assets/the-swing/hero-large.jpg"
},
"gallery": "./assets/the-swing/gallery.jpg"
}
}
]
ANSWER
Answered 2021-Dec-09 at 18:01If I'm understanding your question/issue correctly, you want to render the Gallery
and Paint
components each on their own routes independently, and fix the slideshow linking from painting to painting. For this use the first routing snippet so they are independent routes and not nested.
}
/>
} />
Next, the reason the next painting's urlPath
is being appended as /galleria/Girl-with-a-Pearl-Earring/The-Great-Wave-off-Kanagawa
is because react-router-dom
v6 is capable of using absolute and relative paths. The difference between them is a leading "/"
character. Paths starting with "/"
are absolute paths, and without are relative.
Within Paint
the next/previous buttons/links are specifying only the next/previous data[index].uriPath
value instead of including the "/galleria"
absolute path prefix.
{prevSlide <= -1 ? (
) : (
)}
{nextSlide >= 15 ? (
) : (
)}
Here datas[prevSlide].urlPath
is a string value of the data element name, i.e. "Girl-with-a-Pearl-Earring"
, there is no leading "/"
so the link is treated as a relative link.
There are a couple ways to resolve:
Fix the relative linking, make the new path relative from the parent "directory":
A relative
value (that does not begin with
/
) resolves relative to the parent route, which means that it builds upon the URL path that was matched by the route that rendered that. It may contain
..
to link to routes further up the hierarchy. In these cases,..
works exactly like the command-line cd function; each..
removes one segment of the parent path.
...
Use an absolute path:
...
QUESTION
Please see this codesandbox.
I have a parent div that needs to handle for draggable events (such as when a file is dragged over it). When onDragEnter
is invoked, I want the background color to change. However, I have a child div, which, when hovering over it, invokes the parent div's onDragLeave
event. I've tried using a ref with this child div to determine if the event target is contained in the child div but that doesn't seem to be working. How can I avoid a child div in React invoking the onDragLeave
event? Thanks!
import React, { useState } from 'react';
const App = () => {
const [dragOver, setDragOver] = useState(false);
const preventDefaults = (event) => {
event.preventDefault();
event.stopPropagation();
};
const onDragEnter = (event) => {
preventDefaults(event);
console.log('ENTER');
if (!dragOver) {
setDragOver(true);
}
};
const onDragLeave = (event) => {
preventDefaults(event);
console.log('LEAVE');
setDragOver(false);
};
return (
);
};
export default App;
ANSWER
Answered 2021-Oct-26 at 15:03The simplest way to do this would be to set pointerEvents: "none"
in the style
prop of the child
If this doesn't fit within the constraints of your application, you can modify your onDragLeave
handler to inspect the relatedTarget
of the event (see docs). If the drag is leaving the parent
relatedTarget
(i.e. child div), will be contained (see docs) by the currentTarget
(i.e. the parent
)
Here's the code that should work:
const onDragLeave = (event) => {
preventDefaults(event);
// This condition will be true when the drag leaves the parent for a child,
// but false when the drag leaves the parent for somewhere else.
if (event.currentTarget.contains(event.relatedTarget)) return;
console.log("LEAVE");
setDragOver(false);
};
See this codesandbox.
QUESTION
If you use Bootstrap's grid system to lay out your pages, and there are six breakpoints:
Do I try to configure the nuxt-img sizes to match the column sizes for each breakpoint? In my case, I am just using the md
columns to keep things simple like so:
<----- 'img-fluid' tells image to take width of its container
sizes="XXXX" //<--- I am not sure what sizes to put here???
/>
....etc....
Can someone provide some guidance on how I can tailor the Nuxt-img component best for Bootstrap grid columns? Thank you!
Update: Here's a sandbox test: https://codesandbox.io/s/billowing-butterfly-gi8j6?file=/layouts/default.vue
I have the below settings like so:
ANSWER
Answered 2021-Sep-22 at 22:34Not sure about more optimizations, but I achieved to make it work with this
It is loading the images properly (regarding their size/weight), depending of the screen and generating them during yarn generate
. My github repo can be found here: https://github.com/kissu/so-debug-nuxt-image
This kinda depends of what your page is looking like. The fastest is to try some variants of 100vw
in smaller resolutions and some absolute values like 600px
as you would normally do while doing some responsive.
Toggle your devtools and look how this is rendered with the emulated values, like this pretty much.
This documentation could be a good starting point too: https://developer.mozilla.org/en-US/docs/Learn/HTML/Multimedia_and_embedding/Responsive_images#resolution_switching_different_sizes
Notice that the module will do that for you, it's just to understand the concept.
QUESTION
How can I convert this hook-based code to class-based code? Does the code still work? I'm using a react/ASP.net Core template. My project consists of several components that are siblings. I'm trying to send a state from a component to another one.
import { useState } from "react";
//the change is reflected in the ImageEditor component
const ImageEditor = ({ yourState }) => (
State in the ImageEditor = {yourState}
);
//ImageTile changes the state through the setYourState method
const ImageTile = ({ yourState, setYourState }) => (
setYourState("World!")}>
Change State from the ImageTile
);
//App is the parent component and contains both image editor and tile
const App = () => {
//the state which holds the image ID is declared in the parent
const [imageId, setImageId] = useState("Hello");
return (
);
};
export default App;
You can see the complete code on:
https://codesandbox.io/s/billowing-brook-9y9y5?file=/src/App.js:0-775
ANSWER
Answered 2021-May-08 at 18:53A parent passes it’s state to a child via props. The child is not allowed to change its parents state, if a child wants to change a parents state then the parent passes a callback to the child that the child can call to change the state. This is fundamental to reacts state management. A child does not need to know how a parent stores it’s state (class instance, hook instance or state library).
if your application uses a global state manager like redux, then global state is mapped to props and a store action can be called to update global state. In this case the child does not need to know who else is using the state because it’s global.
class Foo extends Component {
constructor (props) {
super(props);
this.state = { myState: 0 };
this.setMyState = this.setMyState.bind(this);
}
setMyState (value) {
this.setState({
myState: value
});
}
render () {
return (
);
}
}
QUESTION
After compiling I receive this error message:
Failed to compile src\App.js Line 4:1: 'state' is not defined no-undef
Code App.js:
import Messages from "./Messages";
import Input from "./Input"
import { useState } from 'react';
import './App.css';
const initialState = {
messages: [
{
text: "This is a test message!",
member: {
color: "blue",
username: "bluemoon"
}
}
],
member: {
username: randomName(),
color: randomColor()
}
}
function randomName() {
const adjectives = ["autumn", "hidden", "bitter", "misty", "silent", "empty", "dry", "dark", "summer", "icy", "delicate", "quiet", "white", "cool", "spring", "winter", "patient", "twilight", "dawn", "crimson", "wispy", "weathered", "blue", "billowing", "broken", "cold", "damp", "falling", "frosty", "green", "long", "late", "lingering", "bold", "little", "morning", "muddy", "old", "red", "rough", "still", "small", "sparkling", "throbbing", "shy", "wandering", "withered", "wild", "black", "young", "holy", "solitary", "fragrant", "aged", "snowy", "proud", "floral", "restless", "divine", "polished", "ancient", "purple", "lively", "nameless"];
const nouns = ["waterfall", "river", "breeze", "moon", "rain", "wind", "sea", "morning", "snow", "lake", "sunset", "pine", "shadow", "leaf", "dawn", "glitter", "forest", "hill", "cloud", "meadow", "sun", "glade", "bird", "brook", "butterfly", "bush", "dew", "dust", "field", "fire", "flower", "firefly", "feather", "grass", "haze", "mountain", "night", "pond", "darkness", "snowflake", "silence", "sound", "sky", "shape", "surf", "thunder", "violet", "water", "wildflower", "wave", "water", "resonance", "sun", "wood", "dream", "cherry", "tree", "fog", "frost", "voice", "paper", "frog", "smoke", "star"];
const adjective = adjectives[Math.floor(Math.random() * adjectives.length)];
const noun = nouns[Math.floor(Math.random() * nouns.length)];
return adjective + noun;
};
function randomColor() {
return '#' + Math.floor(Math.random() * 0xFFFFFF).toString(16);
};
function App() {
const [state, setState] = useState(initialState);
const onSendMessage = message => {
const messages = state.messages
messages.push({
text: message,
member: state.member
})
this.setState({messages: messages})
}
return (
My Chat App
);
}
export default App;
Code Messages.js:
import {Component} from "react";
import React from "react";
import {Component} from "react";
import React from "react";
class Messages extends Component {
renderMessage(message, index) {
const { member, text } = message;
const { currentMember } = this.props;
const messageFromMe = member.id === currentMember.id;
const className = messageFromMe
? "Messages-message currentMember"
: "Messages-message";
return (
{member.username}
{text}
);
}
render() {
const { messages } = this.props;
return (
{messages.map((m, index) => this.renderMessage(m, index))}
);
}
}
export default Messages;
Code Input.js
import {Component} from "react";
import React from "react";
class Input extends Component {
state = {
text: ""
}
onChange(e) {
this.setState({text: e.target.value});
}
onSubmit(e) {
e.preventDefault();
this.setState({text: ""});
this.props.onSendMessage?.(this.state.text);
}
render() {
return (
this.onSubmit(e)}>
this.onChange(e)}
value={this.state.text}
type="text"
placeholder="Enter your message and press ENTER"
autofocus="true"
/>
Send
);
}
}
export default Input;
It's a simple project, but I'm new to programing and I would appreciate your help. I have added the component Messages so we can fast find the solution. I think that adding the CSS is not necessary.
ANSWER
Answered 2021-Apr-14 at 04:42Functional components don't have a defined this
, and any state should be declared in a useState
hook.
Use the useState
hook and set initial state.
import { useState } from 'react';
const initialState = {
messages: [
{
text: "This is a test message!",
member: {
color: "blue",
username: "bluemoon"
}
}
],
member: {
username: randomName(),
color: randomColor()
}
}
function App() {
const [state, setState] = useState(initialState);
return (
);
}
For the "Cannot read property 'setState' of undefined" error(s)
TypeError: Cannot read property 'setState' of undefined
onSendMessage
C:/Users/User/Desktop/Algebra materijali/Test2/chat-app/src/App.js:43
40 | text: message,
41 | member: state.member
42 | })
> 43 | this.setState({messages: messages})
| ^ 44 | }
45 |
46 | return (
View compiled
Input.onSubmit
C:/Users/User/Desktop/Algebra materijali/Test2/chat-app/src/Input.js:16
13 | onSubmit(e) {
14 | e.preventDefault();
15 | this.setState({text: ""});
> 16 | this.props.onSendMessage?.(this.state.text);
| ^ 17 | }
18 |
19 | render() {
Bind this
to onChange
and onSubmit
in the constructor
:
constructor(props) {
super(props);
this.state = {
text: ""
}
this.onChange = this.onChange.bind(this);
this.onSubmit = this.onSubmit.bind(this);
}
or convert onChange
and onSubmit
to arrow functions to have this
bound to them automatically.
onChange = (e) => {
this.setState({text: e.target.value});
}
onSubmit = (e) => {
e.preventDefault();
this.setState({text: ""});
this.props.onSendMessage(this.state.text);
}
QUESTION
I have four pictures when you hover over one of these pictures, certain content appears, for example, if you hover the mouse over the first picture, a green block appears when you hover over the second picture, a blue block appears, and so on, the problem is that the logic that I have implemented looks like nightmarish
Here is a link, you can see the logic on codesandbox, I want to know if it is possible to somehow optimize the logic to make it more readable and simple
Hover Image
ANSWER
Answered 2021-Apr-09 at 05:25What I would do is add position: relative
to girls_container
. Then move your color block into the
Next, add the following to your color blocks
z-index: 9999;
position: absolute;
top: 0;
left: 0;
Move @mouseover
and @mouseout
to the girls_container
.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install billow
You can use billow like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the billow component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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