WIP components (as built)
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# 189 MarketOverview
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## 用途
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市场概览。
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## 最小示例
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```go
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indices := []mujica.IndexQuote{{Name: "S&P 500", Price: 5751.07, Change: 51.13, ChangePercent: 0.9, Series: []float64{5700, 5730, 5720, 5751}}}
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view := func(c *ui.Context) {
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mujica.Use(c, mujica.Settings{})
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r := mujica.MarketOverview(c, indices, mujica.MarketOverviewOptions{Breadth: mujica.MarketBreadth{Advancing: 2100, Declining: 1400, Unchanged: 300}})
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if r.Chosen >= 0 {
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fmt.Println(indices[r.Chosen].Name)
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}
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}
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ui.Render(view, 960, 440, 1)
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```
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## 参数
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`indices` 为指数报价组;`Breadth` 是非负涨跌家数;`AsOf` 零值隐藏时间戳;`Decimals` 默认 2;`Disabled` 默认 false。
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## 状态
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默认;交互区域支持聚焦与选中,Disabled 参数控制禁用。
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## 事件
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if r.Chosen >= 0 { 调用方回调(indices[r.Chosen].Name) }
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## 键盘操作
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Tab 到达指数卡片;Enter/Space 选择。
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## 限制
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提供展示与点击事件;行情获取由调用方负责。
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