# All files / src/components Group.js

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48.89% Branches 22/45
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     import '../styles/icons.styl'
    import '../styles/group.styl'

    import dropdown from 'v-dropdown'
    import data from '../mixins/data'
    import method from '../mixins/method'
    import search from '../mixins/selectorWithSearch'
    import selector from '../mixins/selector'
    import { PROVINCE_LEVEL, CITY_LEVEL, AREA_LEVEL, TOWN_LEVEL, LEVELS, LEVEL_LIST } from '../constants'

    export default {
      name: 'RegionGroup',
      mixins: [data, method, search, selector],
      inheritAttrs: false,
      components: { dropdown },
      props: {
        search: {
          type: Boolean,
          default: true
        }
      },
      data () {
        return {
          list: [],
          query: '',
          level: -1
        }
      },
      watch: {
        /**
         * region search
         * search region description first, if no result, then search region key
         * @param value
         */
        query (value) {
          const list = this.getList(this.level)
          let tmp = []
          tmp = list.filter(val => val.value.toLowerCase().includes(value.toLowerCase()))
          if (tmp.length === 0) tmp = list.filter(val => val.key.includes(value))
          this.list = tmp
        },
        /**
         * current region group
         */
        level (val) {
          this.list = this.getList(val)
          this.adjust()
        }
      },
      render (h) {
        const child = []

        child.push(this.buildCaller(h))
        child.push(this.buildHeader(h))
        child.push(this.buildSearch(h))
        child.push(this.buildTabs(h))
        child.push(this.buildContent(h))

        return h('dropdown', {
          ref: 'drop',
          props: {
            border: false
          },
          on: {
            show: this.showChange
          }
        }, child)
      },
      methods: {
        buildHeader (h) {
          const child = []

          child.push(h('h3', [
            h('span', {
              class: {
                'rg-header-selected': this.selectedText
              }
            }, this.selectedText || this.lang.defaultHead)
          ]))

          child.push(h('button', {
            attrs: {
              type: 'button',
              title: this.lang.clear
            },
            class: 'rg-removeall-button',
            on: {
              click: this.clear
            }
          }, [
            h('i', { class: 'rg-iconfont rg-icon-remove' })
          ]))

          child.push(h('button', {
            attrs: {
              type: 'button',
              title: this.lang.done
            },
            class: 'rg-done-button',
            on: {
              click: this.close
            }
          }, [
            h('i', { class: 'rg-iconfont rg-icon-done' })
          ]))

          return h('div', { class: 'rg-header' }, child)
        },
        buildSearch (h) {
          Iif (!this.search) return
          return h('div', { class: 'rg-search' }, [
            h('input', {
              ref: 'search',
              class: 'rg-input',
              attrs: {
                type: 'text',
                autocomplete: 'off'
              },
              domProps: {
                value: this.query
              },
              on: {
                input: e => {
                  this.query = e.target.value.trim()
                }
              }
            })
          ])
        },
        buildTabs (h) {
          const child = []
          LEVELS.forEach(val => {
            Eif (this.levelAvailable(val.index)) {
              child.push(h('li', {
                key: val.index,
                class: {
                  active: val.index === this.level
                }
              }, [
                h('a', {
                  attrs: {
                    href: 'javascript:void(0);'
                  },
                  on: {
                    click: () => {
                      this.level = val.index
                    }
                  }
                }, val.title)
              ]))
            }
          })
          return h('div', { class: 'rg-level-tabs' }, [
            h('ul', child)
          ])
        },
        buildContent (h) {
          const child = []
          if (this.list.length) {
            child.push(...this.list.map(val => {
              return h('li', {
                class: {
                  'rg-item': true,
                  active: this.match(val)
                },
                key: val.key,
                on: {
                  mouseup: () => {
                    this.pick(val)
                  }
                }
              }, val.value)
            }))
          } else {
            child.push(h('li', {
              class: 'rg-message-box'
            }, this.lang.noMatch))
          }
          return h('div', { class: 'rg-results-container' }, [
            h('ul', { class: 'rg-results' }, child)
          ])
        },
        // check level available
        levelAvailable (level) {
          switch (level) {
            case PROVINCE_LEVEL: return true
            case CITY_LEVEL: return this.city
            case AREA_LEVEL: return this.city && this.area
            case TOWN_LEVEL: return this.city && this.area && this.town
          }
        },
        // load list when switch to next level
        getList (val) {
          switch (val) {
            case PROVINCE_LEVEL: return this.listProvince
            case CITY_LEVEL: return this.listCity
            case AREA_LEVEL: return this.listArea
            case TOWN_LEVEL: return this.listTown
          }
        },
        match (item) {
          Iif (!item || !Object.keys(item).length) return false
          const R = this.region
          const key = item.key
          switch (this.level) {
            case PROVINCE_LEVEL: return R.province && R.province.key === key
            case CITY_LEVEL: return R.city && R.city.key === key
            case AREA_LEVEL: return R.area && R.area.key === key
            case TOWN_LEVEL: return R.town && R.town.key === key
          }
        },
        nextLevel (level) {
          if (level === TOWN_LEVEL) return level
          return LEVELS[level + 1].index
        },
        pick (item) {
          const nextLevel = this.nextLevel(this.level)
          const attr = LEVEL_LIST[this.level]
          this.region[attr] = item
          this.change()

          if (this.levelAvailable(nextLevel) && this.level !== nextLevel) {
            this.level = nextLevel
          } else {
            this.close()
          }
        },
        clear () {
          this.clearRegion(PROVINCE_LEVEL)
          this.level = PROVINCE_LEVEL
          this.change()
        }
      },
      beforeMount () {
        this.level = PROVINCE_LEVEL
      }
    }