GWT中数据网格的按钮小部件

Question

I am new to GWT. I have implemented datagrid successfully. Now I want to add a Button/Checkbox widget to the datagrid. I have gone through many sites but couldn't find the exact solution. Hopefully I get the solution hear.

Answer 1

One doesn't add widgets to cell -based widgets.

For buttons you have several choices:

• ActionCell , with a fixed message and using a delegate to react to clicks
• ButtonCell , whose text can vary for each row (uses the Column 's getValue ) and using FieldUpdater to communicate clicks
• TextButtonCell , similar to ButtonCell but uses the appearance pattern (also used by Sencha GXT btw) so you can customize the rendering (default appearance is a native button)

For checkboxes, use the CheckboxCell . Depending on whether you're using it to edit a boolean value or to select the rows, you'll use one constructor or the other, and possibly a selection event manager .

You'll find examples of use in the Showcase app:

• Cell Sampler shows you buttons (not the TextButtonCell though) and how to edit a boolean value with a checkbox.
• Cell Table and Data Grid show how to use a checkbox to control selection.