google-apps-script - 我可以访问图表中选定的数据吗

Question

我使用 Google Apps 脚本创建了一个用户界面，用于显示图表对象(例如 TableChart 和 PieChart)中的数据。

图表对象允许用户选择饼图的一部分和表中的多条线。我希望我的代码知道图表中选定的数据是什么。

我有办法做到这一点吗？ 如果没有，我将在 GAS 问题跟踪器中填写功能请求。

谢谢

蒂埃里

Answer 1

是的。请参阅 getSelection() 的文档

getSelection() [optional]

This is optionally exposed by visualizations that want to let you access the currently selected data in the graphic.

selection_array getSelection()

Returns

selection_array An array of selected objects, each one describing a data element in the underlying table used to create the visualization (a DataView or a DataTable). Each object has properties row and/or column, with the index of the row and/or column of the selected item in the underlying DataTable. If the row property is null, then the selection is a column; if the column property is null, then the selection is a row; if both are non-null, then it is a specific data item. You can call the DataTable.getValue() method to get the value of the selected item. The retrieved array can be passed into setSelection().

Example

function myClickHandler(){
  var selection = myVis.getSelection();


  for (var i = 0; i < selection.length; i++) {
    var item = selection[i];
    if (item.row != null && item.column != null) {
      message += '{row:' + item.row + ',column:' + item.column + '}';
    } else if (item.row != null) {
      message += '{row:' + item.row + '}';
    } else if (item.column != null) {
      message += '{column:' + item.column + '}';
    }
  }
  if (message == '') {
    message = 'nothing';
  }
  alert('You selected ' + message);
}