jmgraph/example/flow-graph-cdn.html at master · fefeding/jmgraph · GitHub

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<!doctype html>
<html lang="zh-CN">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>jmGraph FlowGraph - 第三方使用示例（CDN）</title>
  <style>
    html, body { margin: 0; height: 100%; font-family: -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif; }
    #app { width: 100vw; height: 100vh; background: #f8fafc; }
    .bar { position: fixed; top: 12px; left: 12px; z-index: 10; display: flex; gap: 8px; }
    button { padding: 6px 12px; border: 1px solid #cbd5e1; border-radius: 6px; background: #fff; cursor: pointer; }
    button:hover { border-color: #6366f1; }
  </style>
</head>
<body>
  <div class="bar">
    <button data-act="layout">自动布局</button>
    <button data-act="fit">适应视图</button>
    <button data-act="zoom-in">放大</button>
    <button data-act="zoom-out">缩小</button>
    <button data-act="run">模拟运行</button>
    <button data-act="png">导出PNG</button>
  </div>
  <div id="app"></div>

  <!--
    第三方项目最小形态：直接 import 已发布的 jmgraph 包的子路径，
    无需本地安装。等价于本地项目里的 `import { createFlowGraph } from 'jmgraph/components'`。
  -->
  <script type="module">
    import { createFlowGraph, STATUS_META } from 'https://esm.sh/jmgraph/components';

    const stages = [
      { id: 'fetch_user', type: 'fetch',     inputs: [],                              outputs: ['user'],   dependsOn: [] },
      { id: 'fetch_order', type: 'fetch',    inputs: [],                              outputs: ['order'],  dependsOn: [] },
      { id: 'normalize',  type: 'transform', inputs: [{ from: 'fetch_user.user' }, { from: 'fetch_order.order' }], outputs: ['rows'], dependsOn: ['fetch_user', 'fetch_order'] },
      { id: 'score',      type: 'script',    inputs: [{ from: 'normalize.rows' }],    outputs: ['scores'],  dependsOn: ['normalize'] },
      { id: 'notify',     type: 'agent',     inputs: [{ from: 'score.scores' }],      outputs: [],         dependsOn: ['score'] }
    ];

    const fg = createFlowGraph('#app', {
      stages,
      mode: 'edit',
      onSelect: id => console.log('选中节点:', id),
      onError: (err, ctx) => console.error('[flow]', ctx, err)
    });

    fg.autoLayout();
    fg.fit();

    document.querySelector('.bar').addEventListener('click', e => {
      const act = e.target.dataset.act;
      if (!act) return;
      if (act === 'layout') fg.autoLayout();
      else if (act === 'fit') fg.fit();
      else if (act === 'zoom-in') fg.zoomIn();
      else if (act === 'zoom-out') fg.zoomOut();
      else if (act === 'png') fg.exportPNG('jmgraph-flow');
      else if (act === 'run') {
        fg.setRunStatus({ fetch_user: 'success', fetch_order: 'success', normalize: 'running' });
        setTimeout(() => fg.setRunStatus({
          fetch_user: 'success', fetch_order: 'success',
          normalize: 'success', score: 'running', notify: 'pending'
        }), 900);
      }
    });
  </script>
</body>
</html>