const app = getApp();

Component({
  options: { addGlobalClass: true },
  properties: {
    title: { type: String, value: '肉垫计划' },
    showBack: { type: Boolean, value: false },
    // tone="brand"：透明底 + 深棕字，压在品牌色带上（首页/记录页）。
    // 默认空 = 原来的奶白毛玻璃，另外 7 个页面都靠它，别动默认分支
    tone: { type: String, value: '' }
  },
  data: {
    statusBarHeight: 20,
    navBarHeight: 44
  },
  lifetimes: {
    attached() {
      this.setData({
        statusBarHeight: app.globalData.statusBarHeight,
        navBarHeight: app.globalData.navBarHeight
      });
    }
  },
  methods: {
    onBack() {
      const pages = getCurrentPages();
      if (pages.length > 1) {
        wx.navigateBack();
      } else {
        wx.switchTab({ url: '/pages/home/home' });
      }
    }
  }
});