在 Cytoscape.js 中将节点组合在一起

Question

我正在使用 Cytoscape 进行网络可视化。

我发现了这个 example 可以扩展和收缩的分组节点。

我的问题是，是否可以突出显示节点，然后 动态地 add/remove 将它们临时添加到一个组中？

我还没有在网上找到有人实际尝试过这个的例子，我发现的所有例子都像前面提到的那样，已经在初始数据加载中预定义了组。

Answer 1

此外，还有 clipboard extension，您可以通过 ctrl + mousedrag select 多个元素。

var cy = window.cy = cytoscape({
  container: document.getElementById('cy'),
  style: [{
      selector: 'node',
      style: {
        'label': 'data(id)'
      }
    },

    {
      selector: 'node:parent',
      style: {
        'label': ''
      }
    },

    {
      selector: 'edge',
      style: {
        'curve-style': 'bezier',
        'target-arrow-shape': 'triangle'
      }
    },

    {
      selector: '.cdnd-grabbed-node',
      style: {
        'background-color': 'red'
      }
    },

    {
      selector: '.cdnd-drop-sibling',
      style: {
        'background-color': 'red'
      }
    },

    {
      selector: '.cdnd-drop-target',
      style: {
        'border-color': 'red',
        'border-style': 'dashed'
      }
    }
  ],
  elements: {
    nodes: [{
        data: {
          id: 'a'
        }
      },
      {
        data: {
          id: 'b'
        }
      },
      {
        data: {
          id: 'c'
        }
      },
      {
        data: {
          id: 'd',
          parent: 'p'
        }
      },
      {
        data: {
          id: 'p'
        }
      }
    ],
    edges: [

    ]
  }
});

var cdnd = cy.compoundDragAndDrop();
var removeEmptyParents = false;

var isParentOfOneChild = function(node) {
  return node.isParent() && node.children().length === 1;
};

var removeParent = function(parent) {
  parent.children().move({
    parent: null
  });
  parent.remove();
};

var removeParentsOfOneChild = function() {
  cy.nodes().filter(isParentOfOneChild).forEach(removeParent);
};

// custom handler to remove parents with only 1 child on drop
cy.on('cdndout', function(event, dropTarget) {
  if (removeEmptyParents && isParentOfOneChild(dropTarget)) {
    removeParent(dropTarget);
  }
});

// custom handler to remove parents with only 1 child (on remove of drop target or drop sibling)
cy.on('remove', function(event) {
  if (removeEmptyParents) {
    removeParentsOfOneChild();
  }
});

// toggle check handler
document.getElementById('remove-1ch-parents').addEventListener('click', function() {
  removeEmptyParents = !removeEmptyParents;

  if (removeEmptyParents) {
    removeParentsOfOneChild();
  }
});

body {
  font-family: helvetica neue, helvetica, liberation sans, arial, sans-serif;
  font-size: 14px;
}

#cy {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  z-index: 1;
}

h1 {
  opacity: 0.5;
  font-size: 1em;
  font-weight: bold;
}

#options {
  z-index: 2;
  position: absolute;
  right: 0;
  top: 0;
  margin: 0.5em;
}

<head>
  <title>cytoscape-compound-drag-and-drop demo</title>
  <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, maximum-scale=1">
  <script src="https://unpkg.com/cytoscape/dist/cytoscape.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/cytoscape-compound-drag-and-drop@1.0.0/cytoscape-compound-drag-and-drop.min.js"></script>
</head>

<body>
  <h1>cytoscape-compound-drag-and-drop</h1>
  <div id="cy"></div>
  <div id="options">
    <input id="remove-1ch-parents" type="checkbox" value="false" />
    <label for="remove-1ch-parents">Remove parents with only one child</label>
  </div>
</body>

问题本身在需求方面并不是那么明确，所以如果仍有不清楚的地方，请将其编辑得更精确（也许还有您的代码，以便我们可以将其用作基础。THX

在 Cytoscape.js 中将节点组合在一起

Group nodes together in Cytoscape.js

grouping

cytoscape.js