/**
 * 阅读论文标签数据
 */
export const state=()=>({
  //已打开论文列表
  read:[],
  //激活的论文标签
  activeName:''
})
export const mutations = {
  //新建论文标签
  open(state,item){
    let isNew=true
    for(let i in state.read) {
      if (state.read[i].title === item.title) {
        isNew=false
        mutations.choose(state,item.title)
      }
    }
    if(isNew) {
      state.read.push(item)
      mutations.choose(state, state.read[state.read.length - 1].title)
    }
  },
  //关闭论文标签
  close(state,title){
    for(let i in state.read){
      if(state.read[i].title===title){
        state.read.splice(i,1)
        if(state.read.length>0){
          if(state.activeName===title) {
            mutations.choose(state, state.read[state.read.length - 1].title)
          }
        }
      }
    }
  },
  //选择论文标签
  choose(state,title){
    state.activeName=title
  }
}