@gropius/graph-editor

The @gropius/graph-editor is a powerful and customizable graph editor built on top of the Sprotty framework. It enables users to view and modify Gropius architecture graphs composed of ComponentVersions, Interfaces, and Relations. Further, the editor displays information about issues on ComponentVersions and Interfaces, and semantic relations between them.

This package is framework-agnostic and can be integrated into various environments.

Key Features

• Graph visualization: View and interact with a graph of ComponentVersions, Interfaces, and Relations. In addition to the architecture, the graph shows issues and their issue relations.
• Automatic layouting: This package provides an API to automatically layout the graph.
• Highly customizable: The editor provides hooks for various lifecycle events like selection changes, layout updates, and relation creation.

Installation

To install the @gropius/graph-editor package, use npm:

npm install @gropius/graph-editor

Basic Usage

Below is an outline of how to use the @gropius/graph-editor library to render and manage a graph.

Setup

import "reflect-metadata";
import {
    Graph,
    GraphLayout,
    GraphModelSource,
    SelectedElement,
    createContainer,
    CreateRelationContext
} from "@gropius/graph-editor";
import { TYPES } from "sprotty";

// Define your architecture graph and layout
const graph: Graph = {
    // Define the graph structure (components, interfaces, relations, issue relations)
};

const layout: GraphLayout = {
    // Define the layout of the graph (positions, sizes, etc.)
};

// Custom model source for event handling
class ModelSource extends GraphModelSource {
    
    protected handleCreateRelation(context: CreateRelationContext): void {
        console.log("Relation created:", context);
        // Add custom logic for handling new relations
    }

    protected layoutUpdated(partialUpdate: GraphLayout, resultingLayout: GraphLayout): void {
        console.log("Layout updated:", resultingLayout);
        // Add custom logic for layout changes
    }

    protected handleSelectionChanged(selectedElements: SelectedElement<any>[]): void {
        console.log("Selection changed:", selectedElements);
        // Add custom logic for handling selected elements
    }

    protected navigateToElement(element: string): void {
        console.log("Navigate to element:", element);
        // Add custom logic for navigating to elements
    }
}

// Create an instance of the editor
const container = createContainer("your-editor-id");
container.bind(ModelSource).toSelf().inSingletonScope();
container.bind(TYPES.ModelSource).toService(ModelSource);
const modelSource = container.get(ModelSource);

// Update the graph and layout
modelSource.updateGraph({ graph, layout, fitToBounds: true });

Styles

The graph editor uses multiple CSS variables to provide configurable styling. Following is a list of the available CSS variables (which should be applied to .sprotty svg):

• --diagram-grid: the color of the grid lines
• --background-overlay-color: the color of the background overlay
• --shape-stroke-color: the color of the shapes' (components and interfaces) border
• --version-chip-background: the background color of the version chips
• --version-chip-color: the text color of the version chips
• --selected-shape-stroke-color: the border color of a selected shape
• --selected-shape-fill-color: the fill color of a selected shape
• --issue-closed-color: the color representing a closed issue
• --issue-open-color: the color representing an open issue
• --issue-relation-stroke-color: the color of the stroke for issue relation lines
• --highlight-stroke-color: the border color used for highlighting elements
• --highlight-fill-color: the fill color used for highlighted elements

License

This project is licensed under the terms of the Eclipse Public License 2.0. See the LICENSE file for details.

For more details and advanced usage, refer to the Sprotty documentation.