ListGrid - hold the remove from database, until Save button is clicked

[hong6663]

Hi,

I am using SmartGWT 2.5 Pro.

As mention in the title, I would like to onhold the record remove from the database until the user manually click on the Save button that I implemented. When user hit on the "delete" key, I want to remember that the selected record is to be delete. To do this, I set the following in the ListGrid. Also, I added the KeyPressHandler.

1. setCanRemoveRecords -> false
2. setAutoSaveEdits -> false

However, the record will be deleted from database, when user hit on the "delete" button. How can I disable it and just set the record state to delete (not sure this is doable)?

It is working for edit and add new record.


Sample code as following:
final ListGrid userList = new ListGrid();
userList.setWidth(600);
userList.setHeight(224);
userList.setDataSource(customDS);
userList.setCanEdit(true);
userList.setCanRemoveRecords(false);
userList.setAutoSaveEdits(false);
userList.setLeaveScrollbarGap(false);
userList.setDataFetchMode(FetchMode.LOCAL);
userList.setAutoFetchData(true);

userList.setFields(
new ListGridField("userName"),
new ListGridField("job"),
new ListGridField("email"),
new ListGridField("employeeType"),
new ListGridField("salary")
);

userList.addKeyPressHandler(new KeyPressHandler(){

@Override
public void onKeyPress(KeyPressEvent event) {
if(event.getKeyName().equals("Delete")){

userList.removeData(userList.getRecord(userList.getEventRow()));
}
}
});


Appreciate your help.

[swinterberger]

It is going to delete because you have the grid bound to the data source and then you call a delete on it. setCanRemoveRecords doesnt actually tell the listGrid it cant delete, it just won't display the built in delete button. A delete is also not considered an edit, so autoSaveEdits will not help you here.

Instead of calling:

userList.removeData(userList.getRecord(userList.getEventRow()));

You might want to try getting the records from your dataSource directly:

DataSource.get("dSName").fetchData(new Criteria("....", ....), new DSCallback() {

			@Override
			public void execute(DSResponse response, Object rawData, DSRequest request) {
				getView().listGrid().setData(response.getData());
			}
		});

This way the list will have the data but can not manipulate your database. You will have to manually add the save function as far as I know (this is how I do it) but this also allows you to keep track of deletes and to delete only when they hit save or not to if they cancel.

[ssieb]

Try using markRecordRemoved instead of removeData.

[Isomorphic]

That's a 3.0 API by the way.

[ssieb]

Oops, sorry about that. I just happened to run across that function while looking for something else. But yes, I'm using 3.0.