Streamlit API Support Matrix.md

📊 Streamlit API Support Matrix

Violit supports most of Streamlit's major APIs, and has improved some structures for better performance.

1. Text & Media Elements

Streamlit	Violit Support	Status	Note
st.write	app.write	✅	Compatible API (Signal/State auto-detection)
st.markdown	app.markdown	✅	Markdown syntax support
st.title, st.header	app.title, app.header	✅	Gradient effect automatically applied
st.subheader, st.caption	app.subheader, app.caption	✅
st.code	app.code	✅
st.text	app.text	✅
st.latex	app.latex	❌
st.divider	app.divider	✅
st.image	app.image	✅	Supports URL, Local File, NumPy, PIL
st.audio, st.video	app.audio, app.video	✅

2. Data & Charts

Streamlit	Violit Support	Status	Note
st.dataframe	app.dataframe	✅	Ag-Grid Native (High Performance)
st.table	app.table	✅
st.metric	app.metric	✅	delta and automatic color support
st.json	app.json	✅
st.data_editor	app.data_editor	✅	Simplified version provided
st.plotly_chart	app.plotly_chart	✅	Fully compatible with Plotly
st.pyplot	app.pyplot	✅	Matplotlib support
st.line/bar/area_chart	app.line_chart etc.	✅
st.scatter_chart	app.scatter_chart	✅
st.map	app.map	❌	Recommended to use Mapbox in plotly_chart

3. Input Widgets

Streamlit	Violit Support	Status	Note
st.button	app.button	✅	key unnecessary, on_click recommended
st.download_button	app.download_button	✅
st.link_button	app.link_button	✅
st.text_input	app.text_input	✅
st.number_input	app.number_input	✅
st.text_area	app.text_area	✅
st.checkbox, st.toggle	app.checkbox, app.toggle	✅
st.radio	app.radio	✅
st.selectbox	app.selectbox	✅
st.multiselect	app.multiselect	✅
st.slider	app.slider	✅
st.date/time_input	app.date_input etc.	✅
st.file_uploader	app.file_uploader	✅
st.color_picker	app.color_picker	✅
st.camera_input	app.camera_input	❌	Not supported

4. Layout & Containers

Streamlit	Violit Support	Status	Note
st.columns	app.columns	✅	List ratio support (e.g. [1, 2, 1])
st.container	app.container	✅
st.expander	app.expander	✅
st.tabs	app.tabs	✅
st.empty	app.empty	✅	For dynamic updates
st.sidebar	app.sidebar	✅	Use with app.sidebar: syntax
st.dialog	app.dialog	✅	Modal Decorator supported
st.popover	app.popover	❌	Recommended to use app.dialog

5. Chat & Status

Streamlit	Violit Support	Status	Note
st.chat_message	app.chat_message	✅	Avatar supported
st.chat_input	app.chat_input	✅
st.status	app.status	✅
st.spinner	app.spinner	✅
st.progress	app.progress	✅
st.toast	app.toast	✅
st.balloons, st.snow	app.balloons etc.	✅
st.success/error/warning	app.success etc.	✅

6. Control Flow

Streamlit	Violit Approach	Note
st.rerun	Unnecessary	Immediate partial update upon State change (Zero Rerun)
st.stop	Unnecessary	Handled by Python control flow (return, etc.)
st.form	app.form	✅ Supported (For Batch Input)

---

🔌 Third-Party Library Support

Violit is absorbing the features of Streamlit's popular third-party libraries as Native features.

Library	Violit Status	Description
streamlit-aggrid	✅ Native	app.dataframe basically uses high-performance Ag-Grid. No separate installation required.
Plotly	✅ Native	Fully supported via app.plotly_chart.
streamlit-lottie	❌ Planned	Currently not supported (Planned to add app.lottie).
streamlit-option-menu	✅ Native	Violit's built-in Sidebar perfectly replaces Multi-page Navigation.
streamlit-extras	⚠️ Partial	Some design elements like Metric Cards can be replaced by the Violit Theme System.
streamlit-webrtc	⚠️ Planned	Future support planned via WebSocket-based real-time communication.