动态表列 [英] Dynamic table columns

问题描述

当我想从仅包含字符串(例如，csv中的数据)的列表列表中生成表时，应该如何进行.列的名称无关紧要.从提供的所有示例中，我仅看到将表项绑定到特定模型(由于我不知道列的数目和名称，因此不适合该模型).

How should I proceed when I want to generate table from list of lists which contains only strings(ex. data from csv). Names of columns don't matter. From all examples provided I saw only binding table items to specific model(which doesn't fit there as I have unknown number and names of columns).

推荐答案

如果您已经知道列名和数据类型，我建议对其进行硬编码.如果您对格式一无所知，而只想创建具有完全动态列的TableView，则可以将csv数据中的索引用作提取器来为数据创建StringProperty值:

If you already know the column names and data type, I would suggest to hard code that. If you know nothing about the format and simply want to create a TableView with completely dynamic columns, you can use the index in the csv data as an extractor to create StringProperty values for your data:

class MyView : View() {
    val data = FXCollections.observableArrayList<List<String>>()
    val csvController: CsvController by inject()

    init {
        runAsync {
            csvController.loadData()
        } ui { entries ->
            // Generate columns based on the first row
            entries.first().forEachIndexed { colIndex, name ->
                root.column(name, String::class) {
                    value { row ->
                        SimpleStringProperty(row.value[colIndex])
                    }
                }
            }

            // Assign the extracted entries to our list, skip first row
            data.setAll(entries.drop(1))
        }
    }

    override val root = tableview(data)
}

class CsvController : Controller() {
    // Load data from CSV file here, we'll use som static data
    // where the first row is the headers
    fun loadData() = listOf(
            listOf("Name", "Age"),
            listOf("John", "42"),
            listOf("Jane", "24")
    )
}

此方法仅适用于可视化CSV文件中的数据.如果您需要编辑或操作数据，则对数据类型的了解可以简化IMO的应用程序:)

This approach would only be good for visualizing the data in a CSV file. If you need to edit or manipulate the data, knowledge of the data types up front would yield a less flimsy application IMO :)

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