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3.5 KiB
3.5 KiB
title | order |
---|---|
On/Off Event | 9 |
graph.on(eventName, handler)
Bind event listeners for graph.
Parameters
Name | Type | Required | Description |
---|---|---|---|
eventName | string | true | Name of the event, options are in Event |
handler | Function | true | The listener function |
Here is the description for the objects item
and target
of the handler
's parameter evt
:
Name | Type | Required | Description |
---|---|---|---|
item | string | true | The manipulated item |
target | Function | true | The manipulated Graphics Shape |
Usage
const graph = new G6.Graph({
// ...
});
// bind the node click listener for nodes of the graph
graph.on('node:click', (evt) => {
const item = evt.item; // The manipulated node item
const target = evt.target; // The manipulated graphics shape
// ...
});
// bind the click listener for canvas
graph.on('click', (evt) => {
// ...
});
graph.off(eventName, handler)
Unbind the specific listener.
Parameters
Name | Type | Required | Description |
---|---|---|---|
eventName | string | true | Name of the event, options are in Event |
handler | Function | true | The listener function |
The objects item
and target
of the handler
's parameter evt
are the same as the ones described in graph.on(eventName, handler)
. The handler
should be the same object of binded handler
.
Usage
const graph = new G6.Graph({
// ...
});
// listeners
const fn = (evt) => {
const item = evt.item; // The manipulated node item
const target = evt.target; // The manipulated graphics shape
// ...
};
// bind node click listener
graph.on('node:click', fn);
// Unbind the node click listener. The fn is the same object as above
graph.off('node:click', fn);
graph.off(eventName)
Unbind all the listeners for the graph.
Parameters
Name | Type | Required | Description |
---|---|---|---|
eventName | string | true | Name of the event, options are in Event |
Usage
const graph = new G6.Graph({
// ...
});
// listeners
const fn1 = (evt) => {
const item = evt.item; // the manipulated node item
const target = evt.target; // the manipulated graphics shape
// ...
};
const fn2 = (evt) => {
// ...
};
// bind two listeners for nodes of the graph
graph.on('node:click', fn1);
graph.on('node:click', fn2);
// unbind all the click listeners
graph.off('node:click');
graph.off()
Unbind all the event listeners of the graph. There is no parameter for this function.
Usage
const graph = new G6.Graph({
// ...
});
// listeners
const fn1 = (evt) => {
// ...
};
const fn2 = (evt) => {
// ...
};
// bind mouseenter listner for the nodes of the graph
graph.on('node:mouseenter', fn1);
// bind afteranimate timing listener for graph
graph.on('afteranimate', fn2);
// unbind all the events of the graph
graph.off();