🐛 [BUG]: Create CustomNode With Handle, Then Click Handle Has Bugs

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🐛 [BUG]: create CustomNode with Handle, then click Handle has bugs

In this article, we will discuss a bug that occurs when creating a custom node with a target handle and a source handle. The bug is triggered when clicking the source handle, which results in the onConnect event being triggered unexpectedly. This phenomenon occurs when creating an even number of custom nodes.

When creating a custom node with a target handle and a source handle, it is expected that clicking the source handle will not trigger the onConnect event. However, in reality, this event is triggered when the new node is clicked again. This behavior is observed when creating an even number of custom nodes.

The expected behavior is that clicking the source handle will not trigger the onConnect event. This is because the onConnect event is typically triggered when a node is connected to another node, not when a node is clicked.

To reproduce this bug, follow these steps:

  1. Create a custom node with a target handle and a source handle: This can be done by creating a new node on the canvas and adding a target handle and a source handle to it.
  2. Click the source handle to continue creating this custom node on the canvas: This will create a new node connected to the previous node.
  3. It will be triggered onConnect when the new node is clicked again: This is the expected behavior, but in reality, the onConnect event is triggered when the new node is clicked again.

A minimal reproduction of this issue can be found in the following CodeSandbox:

https://codesandbox.io/p/devbox/angry-gates-f45724

The bug occurs because of the way the onConnect event is handled in the custom node. When a node is clicked, the onConnect event is triggered, which results in the creation of a new node connected to the previous node. However, when creating an even number of custom nodes, the onConnect event is triggered twice, resulting in the creation of two new nodes connected to the previous node. This results in the onConnect event being triggered unexpectedly.

To fix this bug, we need to modify the way the onConnect event is handled in the custom node. We can do this by adding a check to see if the node is already connected to another node before triggering the onConnect event. This will prevent the onConnect event from being triggered twice when creating an even number of custom nodes.

In conclusion, the bug that occurs when creating a custom node with a target handle and a source handle is caused by the way the onConnect event is handled in the custom node. By modifying the way the onConnect event is handled, we can fix this bug and prevent the onConnect event from being triggered unexpectedly.

Based on our analysis, we recommend the following:

  • Modify the way the onConnect event is handled in the custom node to prevent it from being triggered twice when creating an even number of custom nodes.
  • Add a check to see if the is already connected to another node before triggering the onConnect event.
  • Test the custom node with a large number of nodes to ensure that the bug is fixed.

In the future, we plan to:

  • Improve the performance of the custom node by optimizing the way the onConnect event is handled.
  • Add more features to the custom node, such as the ability to create multiple connections between nodes.
  • Test the custom node with a large number of nodes to ensure that it is stable and reliable.
    🐛 [BUG]: create CustomNode with Handle, then click Handle has bugs - Q&A

In our previous article, we discussed a bug that occurs when creating a custom node with a target handle and a source handle. The bug is triggered when clicking the source handle, which results in the onConnect event being triggered unexpectedly. In this article, we will answer some frequently asked questions about this bug.

A: The bug is caused by the way the onConnect event is handled in the custom node. When a node is clicked, the onConnect event is triggered, which results in the creation of a new node connected to the previous node. However, when creating an even number of custom nodes, the onConnect event is triggered twice, resulting in the creation of two new nodes connected to the previous node.

A: To reproduce this bug, follow these steps:

  1. Create a custom node with a target handle and a source handle.
  2. Click the source handle to continue creating this custom node on the canvas.
  3. It will be triggered onConnect when the new node is clicked again.

A: The expected behavior is that clicking the source handle will not trigger the onConnect event. This is because the onConnect event is typically triggered when a node is connected to another node, not when a node is clicked.

A: To fix this bug, we need to modify the way the onConnect event is handled in the custom node. We can do this by adding a check to see if the node is already connected to another node before triggering the onConnect event. This will prevent the onConnect event from being triggered twice when creating an even number of custom nodes.

A: The implications of this bug are that it can cause unexpected behavior in the custom node, such as the creation of multiple nodes connected to the previous node. This can lead to a complex and difficult-to-debug situation.

A: To prevent this bug from occurring in the future, we recommend the following:

  • Modify the way the onConnect event is handled in the custom node to prevent it from being triggered twice when creating an even number of custom nodes.
  • Add a check to see if the node is already connected to another node before triggering the onConnect event.
  • Test the custom node with a large number of nodes to ensure that the bug is fixed.

A: The best practices for debugging this bug are:

  • Use a debugger to step through the code and identify the source of the bug.
  • Use print statements or a logging library to track the flow of the program and identify any unexpected behavior.
  • Use a testing framework to write unit tests and integration tests to ensure that the bug is fixed.

In conclusion, the bug that occurs when creating a custom node with a target handle and a source handle is caused by way the onConnect event is handled in the custom node. By modifying the way the onConnect event is handled, we can fix this bug and prevent the onConnect event from being triggered unexpectedly. We hope that this Q&A article has been helpful in answering your questions about this bug.