streamlit-flow-component 1.2.1

Streamlit Component Wrapper for React Flow

Streamlit Flow

Build beautiful, interactive flow diagrams: Powered by React Flow, Simplified by Streamlit.

🎉 Version 1.2.1 is out now! 🎉

Introducing Markdown Support in Nodes! Now you are no longer limited to having text in your nodes. Use the features offered by Markdown and HTML to spice up your nodes.

The label attribute on the data property of SteamlitFlowNode has been replaced by the content attribute, which accepts as input a string that can be either plain text, markdown, or raw HTML. For extened support, the label attribute still works, but is internally reassigned to the content attribute, but label will be depricated in the next release.

Minor Changes

• Can optionally hide the ReactFlow watermark on the canvas.

Features

• Create, edit and visualize beautiful flow diagrams.
• Add nodes and edges, move them around, pan and zoom.
• Edit node and edge properties.
• Easy to use Layouts - Layered, Tree, Force, Stress, Radial, Random, and Manual.
• Markdown Support in Nodes.
• Interactions with Streamlit - clicks on nodes and edges can be captured in Streamlit.

A demo for all these features can be found here.

Installation

pip install streamlit-flow-component

Running the example

Install the dependencies

git clone https://github.com/dkapur17/streamlit-flow.git
cd streamlit-flow
npm install --prefix streamlit_flow/frontend

Run the frontent

On the first terminal, run from the root of the repository

cd streamlit_flow/frontend
npm start

Run this Example Streamlit App

On the second terminal, run from the root of the repository

streamlit run example.py

Change log

Version 1.0.0

• Overhauled State Management: The component now manages the state of the flow diagram automatically. As such, it keeps track of changes to node positions, connections, and more.

• Pane Context Menu: Right-clicking on the canvas now opens a context menu, allowing you to add new nodes or reset the layout.

• Node Context Menu: Right-clicking on a node now opens a context menu, allowing you to edit or delete the node.

• Edge Context Menu: Right-clicking on an edge now opens a context menu, allowing you to edit or delete the edge.

• Way more Layouts: The layouts are now more extensive, including Tree, Layered, Force, Stress, Radial, Random and Manual. One can also make a custom layout by inheriting from the Layout class.

• Hackable Python State: The primary state management is done within the component, and the state can be read by Python. This is the intended usage. However, while not recommended, it is possible to modify the state from Python as well if the user wishes to.

Version 0.6.0

• The initial release of the library, with the ability to visualize flow diagrams.
• Create nodes and edges, move them around, pan and zoom.
• Automatic Layered Layout Supported
• Interactions sent to Streamlit - The component returns the ID of the element that was clicked on.