Question

我想在某个事件之后更改一些特定边的标签。最好的方法是什么？

我需要去除这些边缘，更改标签标签，然后再次将其添加到cytoscape吗？

最好的方法是“刷新图”。

谢谢！

Answer 1

这是编辑任何cy元素标签的简单方法：


// unbind first to prevent issues with binding conflicts
cy.unbind('click');

// change label of node to new text
cy.bind('click', 'node', function (evt) {
  var target = evt.target;
  target.data('label', 'new node label');
});

// change label of node to new text
cy.bind('click', 'edge', function (evt) {
  var target = evt.target;
  target.data('label', 'new edge label');
});

这是一个工作示范：

var cy = (window.cy = cytoscape({
  container: document.getElementById("cy"),

  boxSelectionEnabled: false,
  autounselectify: true,

  style: [{
      selector: "node",
      css: {
        "label": "data(label)",
        "text-valign": "center",
        "text-halign": "center",
        "height": "60px",
        "width": "60px"
      }
    },
    {
      selector: "edge",
      css: {
        "target-arrow-shape": "triangle"
      }
    },
    {
      selector: "edge[label]",
      css: {
        label: "data(label)",
        "text-rotation": "autorotate",
        "text-margin-x": "0px",
        "text-margin-y": "0px"
      }
    }
  ],
  elements: {
    nodes: [{
        data: {
          id: "Peter",
          label: "Peter"
        }
      },
      {
        data: {
          id: "Claire",
          label: "Claire"
        }
      },
      {
        data: {
          id: "Mike",
          label: "Mike"
        }
      },
      {
        data: {
          id: "Rosa",
          label: "Rosa"
        }
      }
    ],
    edges: [{
        data: {
          source: "Peter",
          target: "Claire",
          label: "edge 01"
        }
      },
      {
        data: {
          source: "Claire",
          target: "Mike",
          label: "edge 02"
        }
      },
      {
        data: {
          source: "Mike",
          target: "Rosa",
          label: "edge 03"
        }
      },
      {
        data: {
          source: "Rosa",
          target: "Peter",
          label: "edge 04"
        }
      }
    ]
  },
  layout: {
    name: "circle"
  }
}));

// This is the important part
cy.unbind('click');
cy.bind('click', 'node', function(evt) {
  var target = evt.target;
  target.data('label', 'new node label');
});
cy.bind('click', 'edge', function(evt) {
  var target = evt.target;
  target.data('label', 'new edge label');
});

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

#cy {
  height: 100%;
  width: 75%;
  position: absolute;
  left: 0;
  top: 0;
  float: left;
}

<html>

<head>
  <meta charset=utf-8 />
  <meta name="viewport" content="user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, minimal-ui">
  <script src="https://unpkg.com/cytoscape@3.3.0/dist/cytoscape.min.js"></script>
</head>

<body>
  <div id="cy"></div>
</body>

</html>

现在您要做的就是调用edges数组上的.data（）函数（一个接一个）。

渲染图形后更改边缘标签

1 个答案: