以下代码使用JS回调显示行索引和列索引以及单元格内容。第二个Python回调是重设索引的技巧，以便可以检测到对同一行的单击（已使用bokeh v1.0.4进行了测试）。与运行bokeh serve --show app.py
from random import randint
from datetime import date
from bokeh.models import ColumnDataSource, TableColumn, DateFormatter, DataTable, CustomJS
from bokeh.layouts import column
from bokeh.models.widgets import TextInput
from bokeh.plotting import curdoc
source = ColumnDataSource(dict(dates = [date(2014, 3, i + 1) for i in range(10)], downloads = [randint(0, 100) for i in range(10)]))
columns = [TableColumn(field = "dates", title = "Date", formatter = DateFormatter()), TableColumn(field = "downloads", title = "Downloads")]
data_table = DataTable(source = source, columns = columns, width = 400, height = 280, editable = True, reorderable = False)
text_row = TextInput(value = None, title = "Row index:", width = 420)
text_column = TextInput(value = None, title = "Column Index:", width = 420)
text_date = TextInput(value = None, title = "Date:", width = 420)
text_downloads = TextInput(value = None, title = "Downloads:", width = 420)
test_cell = TextInput(value = None, title = "Cell Contents:", width = 420)
source_code = """
var grid = document.getElementsByClassName('grid-canvas')[0].children;
var row, column = '';
for (var i = 0,max = grid.length; i < max; i++){
if (grid[i].outerHTML.includes('active')){
row = i;
for (var j = 0, jmax = grid[i].children.length; j < jmax; j++)
if(grid[i].children[j].outerHTML.includes('active'))
{ column = j }
}
}
text_row.value = String(row);
text_column.value = String(column);
text_date.value = String(new Date(source.data['dates'][row]));
text_downloads.value = String(source.data['downloads'][row]);
test_cell.value = column == 1 ? text_date.value : text_downloads.value; """
def py_callback(attr, old, new):
source.selected.update(indices = [])
source.selected.on_change('indices', py_callback)
callback = CustomJS(args = dict(source = source, text_row = text_row, text_column = text_column, text_date = text_date, text_downloads = text_downloads, test_cell = test_cell), code = source_code)
source.selected.js_on_change('indices', callback)
curdoc().add_root(column(data_table, text_row, text_column, text_date, text_downloads, test_cell))
结果：
602392714
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