{
  "schemaVersion": 1,
  "sourceKind": "authored-spec",
  "provenance": "authored-in-repo",
  "specFile": "spec/移动端规格.md",
  "specSection": "34 · 多选框 Checkbox",
  "confidence": "high",
  "slug": "mobile-checkbox",
  "name": "多选框 Checkbox",
  "semanticTypeCandidates": [
    "checkbox",
    "checkbox-group",
    "multi-choice"
  ],
  "variantDimensions": [
    {
      "name": "orientation",
      "values": [
        "vertical",
        "horizontal"
      ]
    },
    {
      "name": "button",
      "values": [
        "false",
        "true"
      ]
    },
    {
      "name": "selectAll",
      "values": [
        "false",
        "true"
      ]
    }
  ],
  "representativeVariants": [
    {
      "orientation": "vertical",
      "button": "false",
      "selectAll": "false",
      "label": "默认（方框 + 文字，纵向排列并画分隔线）"
    },
    {
      "orientation": "vertical",
      "button": "false",
      "selectAll": "true",
      "label": "带全选行（组首一行「全选」，三态由组内推导）"
    },
    {
      "orientation": "horizontal",
      "button": "true",
      "selectAll": "false",
      "label": "胶囊标签式横向（无方框，筛选条用）"
    }
  ],
  "anatomy": {
    "group": "根元素，role=\"group\" + aria-label 说明这组在选什么",
    "item": "单个选项，整行都是热区（原生 button + role=\"checkbox\"）",
    "icon": "方框，未选中是空心框、选中是品牌底 + 反色勾号、半选是品牌底 + 横杠",
    "label": "选项文字，占满剩余宽度",
    "desc": "可选说明行，跟在文字下方（如「需先绑定手机号」）",
    "all": "全选行，不存储自己的状态，由组内各项推导"
  },
  "structurePatterns": {
    "orientation": "vertical（纵向排列，组内画分隔线）/ horizontal（横向排列，靠间距分组）",
    "button": "false（方框 + 文字）/ true（胶囊标签式，无方框）",
    "selectAll": "false（不显示全选行）/ true（组首显示全选行）"
  },
  "usageHints": [
    "在一组选项里同时选中任意多项（兴趣标签、订阅范围、筛选维度），并支持「全选」",
    "触屏上没有鼠标悬停预告状态，全选行在「部分选中」时必须显示出与「全选 / 全不选」都不同的第三态（横杠）",
    "整行（方框 + 文字）都是热区，行高不小于 44px",
    "点全选行：只要还有未选中项就全部选中，否则全部清空（不在「半选」上停留）",
    "全选的选中态是推导值，不单独存储 —— 单项变化后立即重算"
  ],
  "doNotInvent": [
    "「最多选 N 项」的数量上限与超出提示（业务规则在宿主）",
    "分组嵌套（一组里再分组）的层级表达",
    "与表单一起提交时的隐藏字段（由宿主添加）",
    "选项内容的异步加载与「已选 N 项」的汇总条"
  ],
  "unknowns": [
    "全选行是否显示「已选 2/5」这类计数",
    "半选态在非全选行上的用例（如父级节点）",
    "胶囊按钮式是否也需要禁用态的视觉层（当前复用同一条置灰规则）"
  ],
  "interaction": [
    "整行（方框 + 文字）都是热区，行高不小于 44px；横向组里每项自身也保持这个边长",
    "一次触摸即切换，各项互相独立；不限制同时选中的数量上限",
    "点全选行：只要还有未选中项就全部选中，否则全部清空（不在「半选」上停留）",
    "全选的选中态是**推导值**，不单独存储 —— 单项变化后立即重算，避免出现「全选已勾上但还有一项没选」",
    "切换动效是勾号 150ms 缩放；减少动态偏好下瞬时切换",
    "每次切换立即触发 change 事件，回传切换后的完整值数组"
  ],
  "accessibility": [
    "组用 role=\"group\" + aria-label 说明分组名称",
    "每项是原生 button + role=\"checkbox\" + aria-checked（读屏会播报「复选框，已选中/未选中」）",
    "全选行的半选态用 aria-checked=\"mixed\"（checkbox 角色允许的第三个值）",
    "方框与勾号是纯装饰，对读屏隐藏（aria-hidden），语义全靠 role=\"checkbox\"",
    "禁用项用原生 disabled 并补 aria-disabled=\"true\""
  ],
  "api": {
    "source": "implementation",
    "note": "props / events / slots 为 6 端实现的公共接口（说明文字取自规格对应小节）。字段名与各端源码逐名核对：node tools/verify-mobile-docs.mjs",
    "requiredNote": "「必传」按严格定义：实现里**没有默认值**时才为 Y（本门禁逐条核对 props 与各端源码的默认值，防止契约与实现脱节）。",
    "props": [
      {
        "name": "options",
        "type": "Array",
        "default": "[]",
        "desc": "选项数组，每项 { value, label, desc, disabled }（规格 §34.2）",
        "required": false
      },
      {
        "name": "value",
        "type": "Array",
        "default": "[]",
        "desc": "受控选中值数组，每项与 aria-checked 同步写（规格 §34.5）",
        "required": false
      },
      {
        "name": "orientation",
        "type": "'vertical' | 'horizontal'",
        "default": "'vertical'",
        "desc": "变体 orientation：纵向（画分隔线）还是横向排列（规格 §34.3）",
        "required": false
      },
      {
        "name": "button",
        "type": "boolean",
        "default": "false",
        "desc": "变体 button：胶囊标签式（无方框），用于筛选条（规格 §34.3）",
        "required": false
      },
      {
        "name": "selectAll",
        "type": "boolean",
        "default": "false",
        "desc": "变体 selectAll：组首是否显示全选行（规格 §34.3）",
        "required": false
      },
      {
        "name": "disabled",
        "type": "boolean",
        "default": "false",
        "desc": "状态 disabled：整组置灰且不可聚焦（规格 §34.4）",
        "required": false
      },
      {
        "name": "label",
        "type": "string",
        "default": "'多选项'",
        "desc": "分组名称，落到 group 的 aria-label（规格 §34.6）",
        "required": false
      }
    ],
    "events": [
      {
        "name": "change",
        "params": "(value)",
        "desc": "切换任一项或全选时触发，回传切换后的完整值数组（规格 §34.5）"
      }
    ],
    "slots": [
      {
        "name": "default",
        "desc": "额外选项内容（宿主自己渲染的项，追在 options 之后，规格 §34.2 item）"
      }
    ]
  },
  "variantClasses": {
    "orientation": {
      "vertical": [],
      "horizontal": [
        ".kole-m-checkbox-group--horizontal"
      ]
    },
    "button": {
      "false": [],
      "true": [
        ".kole-m-checkbox--button"
      ]
    },
    "selectAll": {
      "false": [],
      "true": [
        ".kole-m-checkbox--all"
      ]
    }
  },
  "demos": [
    {
      "id": "basic",
      "group": "01 组件类型",
      "title": "复选框组",
      "desc": "多选：各项互不影响；点一项即切换该项的选中态。",
      "variant": "orientation=vertical"
    },
    {
      "id": "all",
      "group": "01 组件类型",
      "title": "全选与半选",
      "desc": "全选行不存储自己的状态：全选 / 半选 / 空都由下面各项推导。",
      "variant": "selectAll=true"
    },
    {
      "id": "horizontal",
      "group": "01 组件类型",
      "title": "横向排列",
      "desc": "orientation=horizontal：值少、文案短时用，不再画分隔线。",
      "variant": "orientation=horizontal"
    },
    {
      "id": "states",
      "group": "02 组件状态",
      "title": "三种选中态",
      "desc": "未选中 / 选中 / 半选：勾号出现与消失是形状差异，不只靠颜色。",
      "variant": "状态 checked | indeterminate"
    },
    {
      "id": "disabled",
      "group": "02 组件状态",
      "title": "禁用项",
      "desc": "置灰且不响应：原生 disabled 让读屏播报不可用、键盘跳过。",
      "variant": "disabled=true"
    }
  ],
  "related": [
    {
      "slug": "mobile-radio",
      "why": "选项之间互斥（只能选一项）时用 Radio；可以同时成立多项时才用 Checkbox"
    },
    {
      "slug": "mobile-switch",
      "why": "单个开关类配置用 Switch（即时生效、二值）；需要提交一组值时才用 Checkbox 组"
    },
    {
      "slug": "mobile-form",
      "why": "复选框组作为表单里的一个字段时，标签、必填星号与错误提示由 Form 的 item 提供"
    }
  ]
}