JarCastinggoogle-chart
Google Charts API web components.
See: Documentation
Usage
Installation
npm i @google-web-components/google-chart
In HTML file
<html>
<head>
<script type="module">
import '@google-web-components/google-chart';
</script>
</head>
<body>
<google-chart data='[["Month", "Days"], ["Jan", 31]]'></google-chart>
</body>
</html>
In a LitElement
import {LitElement, html, customElement} from 'lit-element';
import '@google-web-components/google-chart';
@customElement('new-element')
export class NewElement extends LitElement {
render() {
return html`
<google-chart data='[["Month", "Days"], ["Jan", 31]]'></google-chart>
`;
}
}
In a Polymer 3 element
import {PolymerElement, html} from '@polymer/polymer';
import '@google-web-components/google-chart';
class NewElement extends PolymerElement {
static get template() {
return html`
<google-chart data='[["Month", "Days"], ["Jan", 31]]'></google-chart>
`;
}
}
customElements.define('new-element', NewElement);
More usage examples
See examples in the demo or try this live JS bin.
Uprading from 3.x
The component has been migrated to LitElement and uses TypeScript now. This migration introduced two breaking changes.
Removed Polymer-specific selection-changed event
The Polymer-specific selection-changed event commonly used for 2-way bindings has been removed. There were previously two events for observing chart selection changes: google-chart-select and the Polymer-generated selection-changed. For consistency with other events (e.g. google-chart-ready), we keep only google-chart-select.
Polymer components using this feature must be updated to explicitly name the selection event (details). In the example below, note the addition of ::google-chart-select.
- <google-chart selection="{{chartSelection}}"></google-chart>
+ <google-chart selection="{{chartSelection::google-chart-select}}"></google-chart>
LitElement components using the selection-changed event must be updated in a similar fashion:
- <google-chart .selection="${chartSelection}" @selection-changed="${reactToChartSelection}"></google-chart>
+ <google-chart .selection="${chartSelection}" @google-chart-select="${reactToChartSelection}"></google-chart>
Removed google-chart-loader component
Its functionality can be imported from the loader.js module:
import {dataTable, load} from '@google-web-components/google-chart/loader.js';
or you may instead choose to use google.visualization.ChartWrapper directly (example).
Contributing
Instructions for running the tests and demo locally:
Installation
git clone https://github.com/GoogleWebComponents/google-chart.git
cd google-chart
npm install
Running the demo locally
npm start
The browser will open automatically.
Running the tests
npm test
