appwebtech/21_accessing_nested_components.html

## 21_accessing_nested_components.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
<script src="https://fb.me/react-with-addons-15.1.0.js"></script>
<script src="https://fb.me/react-dom-15.1.0.js"></script>

<script id="jsbin-javascript">
// Nested Components and how to access them with props children.


// app.js
import React from 'react';
import ReactDOM from 'react-dom';

import Layout from './components/Layout';

import names from '../../mock-data';

// The convenient way to use React Classes.
class App extends React.Component {


	render() {
		return (
		React.createElement("div", null,
			React.createElement(Layout, {names: names})
		)
		)
	}
}


ReactDOM.render(
	React.createElement(App, null),
	document.getElementById('app')
	);


// Timer.js
import React from 'react';
import { TimerHeader } from './Timer/TimerHeader';
import TimerButton from './Timer/TimerButton';

export default class Timer extends React.Component {
  constructor() {
    super()
    this.state = {
      time: 0,
      isStarted: false
    }
    this.handleClick = this.handleClick.bind(this)
  }

// componentDidMount is a React built in method
// I'll use it to invoke the buttons upon mounting instead of clicking them.
  componentDidMount() {
    this.timer = setInterval(
      () => this.startTimer(),
      1000)
  }

  componentWillUnmount() {
    clearInterval(this.timer)
  }

  startTimer() {
    this.setState(prevState => ({
      time: prevState.time += 1
    }))
    this.setState({
      isStarted: true
    })
  }

  endTimer() {
    clearInterval(this.timer)
    this.setState({
      isStarted: false
    })
  }

  handleClick() {
    this.state.isStarted ?
      this.endTimer() :
      this.timer = setInterval(
        () => this.startTimer(),
        1000)
  }

  render() {
    return(
      React.createElement("div", null,
      React.createElement(TimerHeader, {time: this.state.time}),
      React.createElement(TimerButton, {handleClick: this.handleClick, isStarted: this.state.isStarted})
      )
    )
  }

}


// NameList.js
import React from 'react';

export default class NameList extends React.Component {
  constructor() {
    super();
    this.state = {
      names: [],
      filterText: ''
    };
    this.handleClick = this.handleClick.bind(this);
    this.nameFilter = this.nameFilter.bind(this);
  }

  componentWillMount() {
    // console.log(this.props.names);
    this.setState({
      names: this.props.names
    })
  }

  handleClick(event) {
    event.preventDefault();   // Prevent link from scrolling to top page upon click.
  }

  nameFilter(event) {
    this.setState({
      filterText: event.target.value
    })
  }

  render() {
    let {names} = this.state;
    let {filterText} = this.state;
    if (filterText) {
      names = names.filter((name) => {
        let fullName = '${name.first_name} ${name.last_name}';
        return
          fullName.toLowerCase().includes(filterText.toLowerCase());
      });
    }
    return (
      React.createElement("div", null,
      "// ", JSON.stringify(this.state, null), "  Ideal for Debugging",
      React.createElement("h2", null, this.state.event),
        React.createElement("input", {
        onChange: this.nameFilter,
        type: "text"}),
        names.map((name) => React.createElement("h3", {key: name.id}, React.createElement("a", {href: "#", onClick: this.handleClick}, name.first_name, " ", name.last_name)))
      )
    )
  }
}


// Layout.js
import React from 'react';

import NameList from './NameList';

import Timer from './Timer';


export default class Layout extends React.Component {
  constructor() {
    super();
  }

  render() {
    return (
      React.createElement("div", null,
        React.createElement("h1", null, "Just some React code..."),
        React.createElement(Timer, null),
        React.createElement("h3", null, "Just switched to the Atom text editor"),
        React.createElement("p", null, "Nam quaerat totam expedita? Officiis cumque. Eros curae, donec magna, senectus nostrum? Fusce dolores! Erat sapiente, venenatis assumenda blanditiis deserunt maiores reiciendis, modi, praesentium morbi? Litora nihil nihil aut vero suspendisse neque vel aperiam. Earum adipiscing! Illo?"),
        React.createElement(H1Styler, null,
          React.createElement(NameList, {names: this.props.names})
        )
      )
   )
  }
}

const H1Styler = (props) => {
  const blueBackground = {
    backgroundColor: "yellow"
  }
  return React.createElement("h3", {style: blueBackground}, props.children)
}
</script>


<script id="jsbin-source-javascript" type="text/javascript">// Nested Components and how to access them with props children.


// app.js
import React from 'react';
import ReactDOM from 'react-dom';

import Layout from './components/Layout';

import names from '../../mock-data';

// The convenient way to use React Classes.
class App extends React.Component {


	render() {
		return (
		<div>
			<Layout names={names} />
		</div>
		)
	}
}


ReactDOM.render(
	<App/>,
	document.getElementById('app')
	);


// Timer.js
import React from 'react';
import { TimerHeader } from './Timer/TimerHeader';
import TimerButton from './Timer/TimerButton';

export default class Timer extends React.Component {
  constructor() {
    super()
    this.state = {
      time: 0,
      isStarted: false
    }
    this.handleClick = this.handleClick.bind(this)
  }

// componentDidMount is a React built in method
// I'll use it to invoke the buttons upon mounting instead of clicking them.
  componentDidMount() {
    this.timer = setInterval(
      () => this.startTimer(),
      1000)
  }

  componentWillUnmount() {
    clearInterval(this.timer)
  }

  startTimer() {
    this.setState(prevState => ({
      time: prevState.time += 1
    }))
    this.setState({
      isStarted: true
    })
  }

  endTimer() {
    clearInterval(this.timer)
    this.setState({
      isStarted: false
    })
  }

  handleClick() {
    this.state.isStarted ?
      this.endTimer() :
      this.timer = setInterval(
        () => this.startTimer(),
        1000)
  }

  render() {
    return(
      <div>
      <TimerHeader time={this.state.time}/>
      <TimerButton handleClick={this.handleClick} isStarted={this.state.isStarted}/>
      </div>
    )
  }

}


// NameList.js
import React from 'react';

export default class NameList extends React.Component {
  constructor() {
    super();
    this.state = {
      names: [],
      filterText: ''
    };
    this.handleClick = this.handleClick.bind(this);
    this.nameFilter = this.nameFilter.bind(this);
  }

  componentWillMount() {
    // console.log(this.props.names);
    this.setState({
      names: this.props.names
    })
  }

  handleClick(event) {
    event.preventDefault();   // Prevent link from scrolling to top page upon click.
  }

  nameFilter(event) {
    this.setState({
      filterText: event.target.value
    })
  }

  render() {
    let {names} = this.state;
    let {filterText} = this.state;
    if (filterText) {
      names = names.filter((name) => {
        let fullName = '${name.first_name} ${name.last_name}';
        return
          fullName.toLowerCase().includes(filterText.toLowerCase());
      });
    }
    return (
      <div>
      // {JSON.stringify(this.state, null)}  Ideal for Debugging
      <h2>{this.state.event}</h2>
        <input
        onChange={this.nameFilter}
        type="text"/>
        {names.map((name) => <h3 key={name.id}><a href="#" onClick={this.handleClick}>{name.first_name} {name.last_name}</a></h3>)}
      </div>
    )
  }
}


// Layout.js
import React from 'react';

import NameList from './NameList';

import Timer from './Timer';


export default class Layout extends React.Component {
  constructor() {
    super();
  }

  render() {
    return (
      <div>
        <h1>Just some React code...</h1>
        <Timer />
        <h3>Just switched to the Atom text editor</h3>
        <p>Nam quaerat totam expedita? Officiis cumque. Eros curae, donec magna, senectus nostrum? Fusce dolores! Erat sapiente, venenatis assumenda blanditiis deserunt maiores reiciendis, modi, praesentium morbi? Litora nihil nihil aut vero suspendisse neque vel aperiam. Earum adipiscing! Illo?</p>
        <H1Styler>
          <NameList names={this.props.names} />
        </H1Styler>
      </div>
   )
  }
}

const H1Styler = (props) => {
  const blueBackground = {
    backgroundColor: "yellow"
  }
  return <h3 style={blueBackground}>{props.children}</h3>
}


</script></body>
</html>

## jsbin.paluhaxigi.js
// Nested Components and how to access them with props children.


// app.js
import React from 'react';
import ReactDOM from 'react-dom';

import Layout from './components/Layout';

import names from '../../mock-data';

// The convenient way to use React Classes.
class App extends React.Component {


	render() {
		return (
		React.createElement("div", null,
			React.createElement(Layout, {names: names})
		)
		)
	}
}


ReactDOM.render(
	React.createElement(App, null),
	document.getElementById('app')
	);


// Timer.js
import React from 'react';
import { TimerHeader } from './Timer/TimerHeader';
import TimerButton from './Timer/TimerButton';

export default class Timer extends React.Component {
  constructor() {
    super()
    this.state = {
      time: 0,
      isStarted: false
    }
    this.handleClick = this.handleClick.bind(this)
  }

// componentDidMount is a React built in method
// I'll use it to invoke the buttons upon mounting instead of clicking them.
  componentDidMount() {
    this.timer = setInterval(
      () => this.startTimer(),
      1000)
  }

  componentWillUnmount() {
    clearInterval(this.timer)
  }

  startTimer() {
    this.setState(prevState => ({
      time: prevState.time += 1
    }))
    this.setState({
      isStarted: true
    })
  }

  endTimer() {
    clearInterval(this.timer)
    this.setState({
      isStarted: false
    })
  }

  handleClick() {
    this.state.isStarted ?
      this.endTimer() :
      this.timer = setInterval(
        () => this.startTimer(),
        1000)
  }

  render() {
    return(
      React.createElement("div", null,
      React.createElement(TimerHeader, {time: this.state.time}),
      React.createElement(TimerButton, {handleClick: this.handleClick, isStarted: this.state.isStarted})
      )
    )
  }

}


// NameList.js
import React from 'react';

export default class NameList extends React.Component {
  constructor() {
    super();
    this.state = {
      names: [],
      filterText: ''
    };
    this.handleClick = this.handleClick.bind(this);
    this.nameFilter = this.nameFilter.bind(this);
  }

  componentWillMount() {
    // console.log(this.props.names);
    this.setState({
      names: this.props.names
    })
  }

  handleClick(event) {
    event.preventDefault();   // Prevent link from scrolling to top page upon click.
  }

  nameFilter(event) {
    this.setState({
      filterText: event.target.value
    })
  }

  render() {
    let {names} = this.state;
    let {filterText} = this.state;
    if (filterText) {
      names = names.filter((name) => {
        let fullName = '${name.first_name} ${name.last_name}';
        return
          fullName.toLowerCase().includes(filterText.toLowerCase());
      });
    }
    return (
      React.createElement("div", null,
      "// ", JSON.stringify(this.state, null), "  Ideal for Debugging",
      React.createElement("h2", null, this.state.event),
        React.createElement("input", {
        onChange: this.nameFilter,
        type: "text"}),
        names.map((name) => React.createElement("h3", {key: name.id}, React.createElement("a", {href: "#", onClick: this.handleClick}, name.first_name, " ", name.last_name)))
      )
    )
  }
}


// Layout.js
import React from 'react';

import NameList from './NameList';

import Timer from './Timer';


export default class Layout extends React.Component {
  constructor() {
    super();
  }

  render() {
    return (
      React.createElement("div", null,
        React.createElement("h1", null, "Just some React code..."),
        React.createElement(Timer, null),
        React.createElement("h3", null, "Just switched to the Atom text editor"),
        React.createElement("p", null, "Nam quaerat totam expedita? Officiis cumque. Eros curae, donec magna, senectus nostrum? Fusce dolores! Erat sapiente, venenatis assumenda blanditiis deserunt maiores reiciendis, modi, praesentium morbi? Litora nihil nihil aut vero suspendisse neque vel aperiam. Earum adipiscing! Illo?"),
        React.createElement(H1Styler, null,
          React.createElement(NameList, {names: this.props.names})
        )
      )
   )
  }
}

const H1Styler = (props) => {
  const blueBackground = {
    backgroundColor: "yellow"
  }
  return React.createElement("h3", {style: blueBackground}, props.children)
}
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width">
	<title>JS Bin</title>
	</head>
	<body>
	<script src="https://fb.me/react-with-addons-15.1.0.js"></script>
	<script src="https://fb.me/react-dom-15.1.0.js"></script>

	<script id="jsbin-javascript">
	// Nested Components and how to access them with props children.



	// app.js
	import React from 'react';
	import ReactDOM from 'react-dom';

	import Layout from './components/Layout';

	import names from '../../mock-data';

	// The convenient way to use React Classes.
	class App extends React.Component {


	render() {
	return (
	React.createElement("div", null,
	React.createElement(Layout, {names: names})
	)
	)
	}
	}


	ReactDOM.render(
	React.createElement(App, null),
	document.getElementById('app')
	);


	// Timer.js
	import React from 'react';
	import { TimerHeader } from './Timer/TimerHeader';
	import TimerButton from './Timer/TimerButton';

	export default class Timer extends React.Component {
	constructor() {
	super()
	this.state = {
	time: 0,
	isStarted: false
	}
	this.handleClick = this.handleClick.bind(this)
	}

	// componentDidMount is a React built in method
	// I'll use it to invoke the buttons upon mounting instead of clicking them.
	componentDidMount() {
	this.timer = setInterval(
	() => this.startTimer(),
	1000)
	}

	componentWillUnmount() {
	clearInterval(this.timer)
	}

	startTimer() {
	this.setState(prevState => ({
	time: prevState.time += 1
	}))
	this.setState({
	isStarted: true
	})
	}

	endTimer() {
	clearInterval(this.timer)
	this.setState({
	isStarted: false
	})
	}

	handleClick() {
	this.state.isStarted ?
	this.endTimer() :
	this.timer = setInterval(
	() => this.startTimer(),
	1000)
	}

	render() {
	return(
	React.createElement("div", null,
	React.createElement(TimerHeader, {time: this.state.time}),
	React.createElement(TimerButton, {handleClick: this.handleClick, isStarted: this.state.isStarted})
	)
	)
	}

	}


	// NameList.js
	import React from 'react';

	export default class NameList extends React.Component {
	constructor() {
	super();
	this.state = {
	names: [],
	filterText: ''
	};
	this.handleClick = this.handleClick.bind(this);
	this.nameFilter = this.nameFilter.bind(this);
	}

	componentWillMount() {
	// console.log(this.props.names);
	this.setState({
	names: this.props.names
	})
	}

	handleClick(event) {
	event.preventDefault(); // Prevent link from scrolling to top page upon click.
	}

	nameFilter(event) {
	this.setState({
	filterText: event.target.value
	})
	}

	render() {
	let {names} = this.state;
	let {filterText} = this.state;
	if (filterText) {
	names = names.filter((name) => {
	let fullName = '${name.first_name} ${name.last_name}';
	return
	fullName.toLowerCase().includes(filterText.toLowerCase());
	});
	}
	return (
	React.createElement("div", null,
	"// ", JSON.stringify(this.state, null), " Ideal for Debugging",
	React.createElement("h2", null, this.state.event),
	React.createElement("input", {
	onChange: this.nameFilter,
	type: "text"}),
	names.map((name) => React.createElement("h3", {key: name.id}, React.createElement("a", {href: "#", onClick: this.handleClick}, name.first_name, " ", name.last_name)))
	)
	)
	}
	}




	// Layout.js
	import React from 'react';

	import NameList from './NameList';

	import Timer from './Timer';


	export default class Layout extends React.Component {
	constructor() {
	super();
	}

	render() {
	return (
	React.createElement("div", null,
	React.createElement("h1", null, "Just some React code..."),
	React.createElement(Timer, null),
	React.createElement("h3", null, "Just switched to the Atom text editor"),
	React.createElement("p", null, "Nam quaerat totam expedita? Officiis cumque. Eros curae, donec magna, senectus nostrum? Fusce dolores! Erat sapiente, venenatis assumenda blanditiis deserunt maiores reiciendis, modi, praesentium morbi? Litora nihil nihil aut vero suspendisse neque vel aperiam. Earum adipiscing! Illo?"),
	React.createElement(H1Styler, null,
	React.createElement(NameList, {names: this.props.names})
	)
	)
	)
	}
	}

	const H1Styler = (props) => {
	const blueBackground = {
	backgroundColor: "yellow"
	}
	return React.createElement("h3", {style: blueBackground}, props.children)
	}
	</script>



	<script id="jsbin-source-javascript" type="text/javascript">// Nested Components and how to access them with props children.



	// app.js
	import React from 'react';
	import ReactDOM from 'react-dom';

	import Layout from './components/Layout';

	import names from '../../mock-data';

	// The convenient way to use React Classes.
	class App extends React.Component {


	render() {
	return (
	<div>
	<Layout names={names} />
	</div>
	)
	}
	}


	ReactDOM.render(
	<App/>,
	document.getElementById('app')
	);


	// Timer.js
	import React from 'react';
	import { TimerHeader } from './Timer/TimerHeader';
	import TimerButton from './Timer/TimerButton';

	export default class Timer extends React.Component {
	constructor() {
	super()
	this.state = {
	time: 0,
	isStarted: false
	}
	this.handleClick = this.handleClick.bind(this)
	}

	// componentDidMount is a React built in method
	// I'll use it to invoke the buttons upon mounting instead of clicking them.
	componentDidMount() {
	this.timer = setInterval(
	() => this.startTimer(),
	1000)
	}

	componentWillUnmount() {
	clearInterval(this.timer)
	}

	startTimer() {
	this.setState(prevState => ({
	time: prevState.time += 1
	}))
	this.setState({
	isStarted: true
	})
	}

	endTimer() {
	clearInterval(this.timer)
	this.setState({
	isStarted: false
	})
	}

	handleClick() {
	this.state.isStarted ?
	this.endTimer() :
	this.timer = setInterval(
	() => this.startTimer(),
	1000)
	}

	render() {
	return(
	<div>
	<TimerHeader time={this.state.time}/>
	<TimerButton handleClick={this.handleClick} isStarted={this.state.isStarted}/>
	</div>
	)
	}

	}


	// NameList.js
	import React from 'react';

	export default class NameList extends React.Component {
	constructor() {
	super();
	this.state = {
	names: [],
	filterText: ''
	};
	this.handleClick = this.handleClick.bind(this);
	this.nameFilter = this.nameFilter.bind(this);
	}

	componentWillMount() {
	// console.log(this.props.names);
	this.setState({
	names: this.props.names
	})
	}

	handleClick(event) {
	event.preventDefault(); // Prevent link from scrolling to top page upon click.
	}

	nameFilter(event) {
	this.setState({
	filterText: event.target.value
	})
	}

	render() {
	let {names} = this.state;
	let {filterText} = this.state;
	if (filterText) {
	names = names.filter((name) => {
	let fullName = '${name.first_name} ${name.last_name}';
	return
	fullName.toLowerCase().includes(filterText.toLowerCase());
	});
	}
	return (
	<div>
	// {JSON.stringify(this.state, null)} Ideal for Debugging
	<h2>{this.state.event}</h2>
	<input
	onChange={this.nameFilter}
	type="text"/>
	{names.map((name) => <h3 key={name.id}><a href="#" onClick={this.handleClick}>{name.first_name} {name.last_name}</a></h3>)}
	</div>
	)
	}
	}




	// Layout.js
	import React from 'react';

	import NameList from './NameList';

	import Timer from './Timer';


	export default class Layout extends React.Component {
	constructor() {
	super();
	}

	render() {
	return (
	<div>
	<h1>Just some React code...</h1>
	<Timer />
	<h3>Just switched to the Atom text editor</h3>
	<p>Nam quaerat totam expedita? Officiis cumque. Eros curae, donec magna, senectus nostrum? Fusce dolores! Erat sapiente, venenatis assumenda blanditiis deserunt maiores reiciendis, modi, praesentium morbi? Litora nihil nihil aut vero suspendisse neque vel aperiam. Earum adipiscing! Illo?</p>
	<H1Styler>
	<NameList names={this.props.names} />
	</H1Styler>
	</div>
	)
	}
	}

	const H1Styler = (props) => {
	const blueBackground = {
	backgroundColor: "yellow"
	}
	return <h3 style={blueBackground}>{props.children}</h3>
	}




	</script></body>
	</html>