8000 prevent infinite loops on frames · RequisDev/react-plotly.js@d81beb9 · GitHub
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prevent infinite loops on frames
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‎README.md

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@@ -74,24 +74,24 @@ For a full description of Plotly chart types and attributes see the following re
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## State management
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This is a "dumb" component with no internal state. This means that if a user interacts with the plot, by zooming or panning for example, any subsequent re-renders will lose this information unless it is captured and upstreamed via the `onUpdate` callback prop.
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This is a "dumb" component that doesn't merge its internal state with any updates. This means that if a user interacts with the plot, by zooming or panning for example, any subsequent re-renders will lose this information unless it is captured and upstreamed via the `onUpdate` callback prop.
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Here is a simple example of how to capture and store state in a parent object:
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```javascript
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class App extends React.Component {
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Plot(props) {
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constructor(props) {
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super(props);
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this.state = {
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/* data, layout */
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};
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this.state = { data: [], layout: {}, frames: [], config: {} };
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}
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render() {
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return (
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<Plot
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data={this.state.data}
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layout={this.state.layout}
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frames={this.state.frames}
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config={this.state.config}
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onInitialized={(figure) => this.setState(figure)}
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onUpdate={(figure) => this.setState(figure)}
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/>
@@ -102,14 +102,15 @@ class App extends React.Component {
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## Refreshing the Plot
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This component will refresh the plot via `Plotly.react` if either of the following is true:
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This component will refresh the plot via [`Plotly.react`](https://plot.ly/javascript/plotlyjs-function-reference/#plotlyreact) if any of the following are true:
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* The `revision` prop is defined and has changed, OR;
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* One of `data`, `layout`, `frames` or `config` has changed identity as checked via a shallow `===`.
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* One of `data`, `layout` or `config` has changed identity as checked via a shallow `===`, OR;
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* The number of elements in `frames` has changed
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Furthermore, when called, `Plotly.react` will only refresh the data being plotted if the _identity_ of the data arrays (e.g. `x`, `y`, `color` etc) has changed, or if `layout.datarevision` has changed.
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Furthermore, when called, [`Plotly.react`](https://plot.ly/javascript/plotlyjs-function-reference/#plotlyreact) will only refresh the data being plotted if the _identity_ of the data arrays (e.g. `x`, `y`, `marker.color` etc) has changed, or if `layout.datarevision` has changed.
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In short, this means that simply adding data points to a trace in `data` or changing a value in `layout` will not cause a plot to update unless this is done immutably via something like [immutability-helper](https://github.com/kolodny/immutability-helper) if performance considerations permit it, or unless `revision` and/or `layout.datarevision` are used to force a rerender.
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In short, this means that simply adding data points to a trace in `data` or changing a value in `layout` will not cause a plot to update unless this is done immutably via something like [immutability-helper](https://github.com/kolodny/immutability-helper) if performance considerations permit it, or unless `revision` and/or [`layout.datarevision`](https://plot.ly/javascript/reference/#layout-datarevision) are used to force a rerender.
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## API Reference
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‎src/factory.js

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@@ -83,13 +83,29 @@ export default function plotComponentFactory(Plotly) {
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componentWillUpdate(nextProps) {
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if (
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(nextProps.revision !== void 0 &&
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nextProps.revision === this.props.revision) ||
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(nextProps.layout === this.props.layout &&
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nextProps.data === this.props.data &&
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nextProps.config === this.props.config &&
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nextProps.frames === this.props.frames)
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nextProps.revision !== void 0 &&
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nextProps.revision === this.props.revision
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) {
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// if revision is set and unchanged, do nothing
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return;
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}
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const numPrevFrames =
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this.props.frames && this.props.frames.length
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? this.props.frames.length
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: 0;
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const numNextFrames =
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nextProps.frames && nextProps.frames.length
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? nextProps.frames.length
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: 0;
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if (
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nextProps.layout === this.props.layout &&
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nextProps.data === this.props.data &&
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nextProps.config === this.props.config &&
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numNextFrames === numPrevFrames
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) {
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// prevent infinite loops when component is re-rendered after onUpdate
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// frames *always* changes identity so fall back to check length only :(
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return;
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}
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