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docs(edge-handling): cleanup readme, document source and target handle

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moklick
2020-10-29 13:42:02 +01:00
parent e9b4bb4e15
commit 337c047b70
3 changed files with 14 additions and 645 deletions
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website/src/markdown/docs/api/handle.md
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@@ -24,7 +24,7 @@ const targetHandleWithValidation = (
- `id`: string - you only need this when you have multiple source or target handles (otherwise the node id is used)
- `position`: 'left', 'right', 'top' or 'bottom' handle position - default: 'top' for type target, 'bottom' for type source
- `onConnect`: function that gets triggered on connect
- `isValidConnection`: function receives a connection `{ target: 'some-id', source: 'another-id' }` as param, returns a boolean - default: `true`
- `isValidConnection`: function receives a connection `{ target: 'some-id', source: 'another-id', sourceHandle: 'source handle id or null', targetHandle: 'target handle id or null' }` as param, returns a boolean - default: `true`
- `style`: css properties
- `className`: additional class name
@@ -36,5 +36,6 @@ The handle receives the additional class names `connecting` when the connection
### Multiple Handles
If you need multiple source or target handles you can achieve this by creating a custom node. Normally you just use the id of a node for the `source` or `target` of an edge. If you have multiple source or target handles you need to pass an id to these handles. These ids get then added to the node id, so that you can connect a specific handle. If you have a node with an id = `1` and a handle with an id = `a` you can connect this handle by using the id = `1__a`.
If you need multiple source or target handles you can achieve this by creating a custom node. Normally you just use the id of a node for the `source` or `target` of an edge. If you have multiple source or target handles you need to pass an id to these handles. These ids can be used by an edge with the `sourceHandle` and `targetHandle` options, so that you can connect a specific handle. If you have a node with an id = `1` and a handle with an id = `a` you can connect this handle by using the node `source=1` and the `sourceHandle=__a`.
You can find an example of how to implement a custom node with multiple handles in the [custom node example](https://github.com/wbkd/react-flow/blob/main/example/src/CustomNode/ColorSelectorNode.js#L18-L29).