mindnet/app/frontend/ui_graph_cytoscape.py
2025-12-14 15:05:24 +01:00

207 lines
8.6 KiB
Python

import streamlit as st
# WICHTIG: Wir nutzen jetzt 'st-cytoscape' (pip install st-cytoscape)
from st_cytoscape import cytoscape
from qdrant_client import models
from ui_config import COLLECTION_PREFIX, GRAPH_COLORS
from ui_callbacks import switch_to_editor_callback
def render_graph_explorer_cytoscape(graph_service):
st.header("🕸️ Graph Explorer (Cytoscape)")
if "graph_center_id" not in st.session_state:
st.session_state.graph_center_id = None
# Layout Defaults für COSE (Compound Spring Embedder)
st.session_state.setdefault("cy_node_repulsion", 1000000) # Starke Abstoßung
st.session_state.setdefault("cy_ideal_edge_len", 200) # Ziel-Abstand
col_ctrl, col_graph = st.columns([1, 4])
# --- CONTROLS ---
with col_ctrl:
st.subheader("Fokus")
search_term = st.text_input("Suche Notiz", placeholder="Titel eingeben...", key="cy_search")
if search_term:
hits, _ = graph_service.client.scroll(
collection_name=f"{COLLECTION_PREFIX}_notes",
limit=10,
scroll_filter=models.Filter(must=[models.FieldCondition(key="title", match=models.MatchText(text=search_term))])
)
options = {h.payload['title']: h.payload['note_id'] for h in hits}
if options:
selected_title = st.selectbox("Ergebnisse:", list(options.keys()), key="cy_select")
if st.button("Laden", use_container_width=True, key="cy_load"):
st.session_state.graph_center_id = options[selected_title]
st.rerun()
st.divider()
with st.expander("👁️ Layout Einstellungen", expanded=True):
st.caption("COSE Layout (Optimiert für Abstände)")
st.session_state.cy_ideal_edge_len = st.slider("Kantenlänge (Ideal)", 50, 600, st.session_state.cy_ideal_edge_len)
st.session_state.cy_node_repulsion = st.slider("Knoten-Abstoßung", 100000, 5000000, st.session_state.cy_node_repulsion, step=100000)
if st.button("Neu berechnen", key="cy_rerun"):
st.rerun()
st.divider()
st.caption("Legende")
for k, v in list(GRAPH_COLORS.items())[:8]:
st.markdown(f"<span style='color:{v}'>●</span> {k}", unsafe_allow_html=True)
# --- GRAPH AREA ---
with col_graph:
center_id = st.session_state.graph_center_id
if center_id:
action_container = st.container()
# 1. Daten laden
with st.spinner("Lade Graph..."):
# Wir holen die Agraph-Objekte vom Service
nodes_data, edges_data = graph_service.get_ego_graph(center_id)
# Note Data für Editor Button
note_data = graph_service.get_note_with_full_content(center_id)
# 2. Action Bar
with action_container:
c1, c2 = st.columns([3, 1])
with c1: st.caption(f"Zentrum: **{center_id}**")
with c2:
if note_data:
st.button("📝 Bearbeiten", use_container_width=True, on_click=switch_to_editor_callback, args=(note_data,), key="cy_edit")
# 3. Konvertierung zu Cytoscape JSON Format
cy_elements = []
# Nodes konvertieren
for n in nodes_data:
# Wir bauen das 'label' so um, dass lange Titel umbrechen (optional)
label_display = n.label
if len(label_display) > 20: label_display = label_display[:20] + "..."
cy_node = {
"data": {
"id": n.id,
"label": label_display,
"full_label": n.label,
"color": n.color,
# Größe skalieren: Center größer
"size": 60 if n.id == center_id else 40,
# Tooltip Inhalt
"tooltip": n.title
},
# Zentrum markieren
"selected": (n.id == center_id)
}
cy_elements.append(cy_node)
# Edges konvertieren
for e in edges_data:
# FIX: Agraph Edges nutzen .to, nicht .target
# Wir prüfen sicherheitshalber beide Attribute
target_id = getattr(e, "to", getattr(e, "target", None))
if target_id:
cy_edge = {
"data": {
"source": e.source,
"target": target_id,
"label": e.label,
"color": e.color
}
}
cy_elements.append(cy_edge)
# 4. Stylesheet (Design Definitionen)
stylesheet = [
{
"selector": "node",
"style": {
"label": "data(label)",
"width": "data(size)",
"height": "data(size)",
"background-color": "data(color)",
"color": "#333",
"font-size": "14px",
"text-valign": "center",
"text-halign": "center",
"border-width": 2,
"border-color": "#fff",
"text-wrap": "wrap",
"text-max-width": "100px"
}
},
{
"selector": "node:selected",
"style": {
"border-width": 5,
"border-color": "#FF5733",
"background-color": "#FF5733",
"color": "#fff"
}
},
{
"selector": "edge",
"style": {
"width": 3,
"line-color": "data(color)",
"target-arrow-color": "data(color)",
"target-arrow-shape": "triangle",
"curve-style": "bezier",
"label": "data(label)",
"font-size": "11px",
"color": "#555",
"text-background-opacity": 0.8,
"text-background-color": "#ffffff",
"text-rotation": "autorotate"
}
}
]
# 5. Rendering mit COSE Layout
# COSE ist der Schlüssel für gute Abstände!
with st.spinner("Berechne Layout..."):
selected_element = cytoscape(
elements=cy_elements,
stylesheet=stylesheet,
layout={
"name": "cose",
"idealEdgeLength": st.session_state.cy_ideal_edge_len,
"nodeOverlap": 20,
"refresh": 20,
"fit": True,
"padding": 50,
"randomize": False,
"componentSpacing": 200,
"nodeRepulsion": st.session_state.cy_node_repulsion,
"edgeElasticity": 100,
"nestingFactor": 5,
"gravity": 50,
"numIter": 1000,
"initialTemp": 200,
"coolingFactor": 0.95,
"minTemp": 1.0
},
key="cyto_graph_obj", # Ein fester Key ist hier okay, da das Layout-Dict sich ändert
height="700px"
)
# Interaktion: Klick Event verarbeiten
# st-cytoscape gibt ein Dictionary zurück
if selected_element:
# Prüfen, ob es ein Node-Klick war
# Die Struktur ist: {'nodes': ['id1', 'id2'], 'edges': [...]}
clicked_nodes = selected_element.get("nodes", [])
if clicked_nodes:
# Wir nehmen den ersten (und meist einzigen) selektierten Node
clicked_id = clicked_nodes[0]
if clicked_id and clicked_id != center_id:
st.session_state.graph_center_id = clicked_id
st.rerun()
else:
st.info("👈 Bitte wähle links eine Notiz aus.")