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42 lines
1.2 KiB
42 lines
1.2 KiB
4 years ago
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# 父节点不可选中的树
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# props结构
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```
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{
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expander: {
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type: "bi.expander",
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isDefaultInit: false,
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el: {},
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popup: {
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type: "bi.custom_tree",
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},
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},
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el: {
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type: "bi.button_tree",
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chooseType: 0,
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layouts: [
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{
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type: "bi.vertical",
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},
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],
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},
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items:[]
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}
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```
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# node实现
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父节点不可选中,也就是点击父节点就触发展开收起操作,node的实现直接继承BI.NodeButton即可,第一节中提到的NodeButton的关键API大部分都无需override.除了setOpened方法.
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一般在setOpened中处理展开收起按钮的样式改变等
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```
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setOpened: function (b) {
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Node.superclass.setOpened.apply(this, arguments);
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// 额外的自定义处理,如加号变成减号,三角箭头由→改为↓
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}
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```
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# item实现
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子节只涉及选中业务,不涉及展开收起业务,所以直接继承BasicButton即可,无需override任何方法
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# 其他公共实现
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1. 可以手动实现getValue方法,或者在构建items生成value属性
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2. 选中样式可以采用`bi-list-item`、`bi-list-item-active`、`bi-list-item-active2`、`bi-list-item-none`等样式
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