twaver html5 如何设置节点不可拖动

解决思路：

1、创建一个不可移动的图层  :  layer

2、设置不可拖动的节点node 的图层为 layer

见代码：

var box = new twaver.ElementBox(); 
var network = new twaver.vector.Network(box); 
function init() { 
  initNetwork(); 
  initLayer(); 
} 
function initNetwork() { 
  var view = network.getView(); 
  document.body.appendChild(view); 
  network.adjustBounds({x: 0, y: 0, width: 1300, height: 600}); 
  twaver.Styles.setStyle('select.color', '#57ab9a'); 
  network.setEditInteractions(); 
} 
function initLayer() { 
  var layerBox = box.getLayerBox(); 
  var layer1 = new twaver.Layer('unmovable', 'unmovable layer'); // 创建一个不可移动的图层
  layerBox.add(layer1);
  createNode(layer1, 'circle', 300, 100, 200, 200, '#57ab9a'); 
} 
function createNode(layer, shape, x, y, width, height, fillColor) { 
  var node = new twaver.Node(); 
  node.setLayerId(layer.getId()); // 设置节点的图层，指向不可移动的图层
  node.setName('layer-' + layer.getId()); 
  node.setStyle('body.type', 'vector'); 
  node.setStyle('vector.fill.alpha', 0.7); 
  node.setStyle('vector.shape', shape);
  node.setSize(width, height); 
  node.setLocation(x, y); 
  node.setStyle('vector.fill.color', fillColor); 
  box.add(node); return node; 
}