I am reusing a component inside 4 different components. On window resize, every parent component's width will be different and I want to pass that unique width to the common child component.
I was using:
constructor(private elRef: ElementRef)......
window.onresize = (e) =>{
console.log("issues",this.elRef.nativeElement.parentElement);
}
.....
But this gives me the last parent's width and not 4 different widths.
Any help would be appreciated. Thanks.
Related
I have a dashboard panel using react js that I used react-grid-layout in it; I used react-grid-layout in my content and that works correctly but when I close my right side or left side panels (drawers) , the width of my content that is the parent of my react-grid-layout modifies but after this changes my column's width did not modify according to their parent's width size; How can I reload my ResponsiveGridLayout component to changing the childs(columns) width?
this is simple code for showing my problem in this question :
example
this is my dashboard image :
If you look at the documentation here you'll see that ResponsiveGridLayout is a combination of a component called Responsive and a HOC called WidthProvider
import { Responsive, WidthProvider } from 'react-grid-layout';
const ResponsiveGridLayout = WidthProvider(Responsive);
If you look at the code of WidthProvider you may notice it subscribes to widnow resize event
window.addEventListener("resize", this.onWindowResize);
which isn't particularly useful for you, because in your case window does not resize. One way to deal with this problem is to create your own WidthProvider and attach the listener to the element that actually resizes and wrap it around Responsive
const MyVeryOwnResponsiveGridLayout = MyWidthProvider(Responsive);
P.S. You can try requesting the feature from the component creator or volunteer to contribute to the project
I found a better answer than extending the WidthProvider:
Trigger a Window Resize event (without actually resizing the window). I found a delay of 1ms is necessary to make it work.
See this solution:
https://stackoverflow.com/a/62874552/17570516
I'm using DetalisList within ScrollablePane component to keep the header in view, and let the rows scrollable. However, this requires me to manually set the height of the scrollable container.
div.scrollable-container
ScrollablePane
DetailsList
When I investigate the DOM elements for DetalisList, I can see that it's wrapped inside a ViewPort element. The height of this element is the actual height of the sum of the height of all components that make up the list (column headers, rows. etc.). Thus, I want to be able to read this value and set the container height based on whether it exceeds a certain value or not.
Is there a nice to way to access the height of the ViewPort? I can always query the DOM, and find the element, but I'd like to avoid relying on the internal structure of the component.
So, far I could not find any information on this. I noticed DetailsList takes a prop called viewport, but I don't think this is what I want.
You can try by giving height in "vh" (viewport height) unit. For example,
const gridContainerStyle: IStackStyles = {
root: { height: "70vh", position: "relative" },
};
I have a component where there are draggable components inside with translate applied for the drag&drop and a default translation when it's rendered depending on parent's height and width to keep the ratio.
When I resize the window, the parent component change size so the components inside have to re-render to reset the default translation based on the parent size. I pass the size props to the child's but they do not rerender, I believe this is because the translation is done straight in the style attribute.
So I made a trick to force re-render, I pass the props key to the wrapper where the value is the height multiplicate by a width which makes a unique key, change on resizing and then rerender my components with the right default position. Here is what it looks like :
render() {
const { height, width, frame, elem } = this.state;
const key = height * width;
return (
<WrapperFrame>
<WrapperMediaElem key={frame.id}>
<WrapperElements key={key} className="droppable" size={{height, width}}>
<DraggableElement element={{...elem}} size={{height, width}} />
</WrapperElements>
</WrapperMediaElem>
</WrapperFrame>
);
}
This solution works for me but it looks like a "trick" and maybe not the good approach. I wanted to know if it's the right way or if is there a better solution?
I need to set component dimensions depending on parent element. Is it possible to get width and height of parent by ref from virtualDOM before it renders?
Parent
export default class App extends React.Component {
render() {
return (
<div>
<div className={'avocado-container'} ref={(container) => { this.container = container; }}>
<Resizer parent={this} scrollAxis={'y'}>
</Resizer>
</div>
</div>
);
}
}
I need to get the dimensions in constructor of child.
Is is possible with something like this.refs.container.offsetWidth ?
No. Layout dimensions are calculated by the browser, not the Virtual DOM. Either set the dimensions by hand, or use CSS to make your child component fill width and height. You can also read the width and height from the rendered component in componentDidMount and call setState in there, which isn't ideal and will cause a second render, but sometimes needs to be done.
I have a complex web page using React components, and am trying to convert the page from a static layout to a more responsive, resizable layout. However, I keep running into limitations with React, and am wondering if there's a standard pattern for handling these issues. In my specific case, I have a component that renders as a div with display:table-cell and width:auto.
Unfortunately, I cannot query with width of my component, because you can't compute the size of an element unless it's actually placed in the DOM (which has the full context with which to deduce the actual rendered width). Besides using this for things like relative mouse positioning, I also need this to properly set width attributes on SVG elements within the component.
In addition, when the window resizes, how do I communicate size changes from one component to another during setup? We're doing all of our 3rd-party SVG rendering in shouldComponentUpdate, but you cannot set state or properties on yourself or other child components within that method.
Is there a standard way of dealing with this problem using React?
The method of lifecycle you probably want is componentDidMount
The elements have already been placed in the DOM and you can get information about them from the component's refs.
Example:
var Container = React.createComponent({
componentDidMount: function () {
var width = this.refs.svg.getDOMNode().offsetWidth;
},
render: function () {
<svg ref="svg" />
}
});
In componentDidMount you can get the window.width or ReactDom.findDOMNode(this).width. Then use the width in state and pass as a prop as needed. You can also set a listener for the resize event.