On Sun, Jan 20, 2013 at 9:39 AM, Staffan Tylen <staffan.ty...@gmail.com>wrote:
>
> Have you looked through the documentation on LvFullRow, LvItem, and
>> LvSubitem? LvFullRow came about though my desire to insert a new list-view
>> item in one method invocation. However, my main design goal was to be able
>> to specify all bits of data that the list-view supports.
>>
>
>>
> Yes, I've been through them all but couldn't see that they would address
> this particular task.
>
No, there isn't currently anything that would address the task. There is
still a missing method.
One idea I have would be something like this:
>>
>> do i = 2 to data~items -- loop thru all data arrays
>> lv~insertFullRow(.LvFullRow~fromArray(data[i])) data array as a
>> listview row
>> end
>>
>> ListView::insertFullRow() already exists. I would just need to add the
>> LvFullRow class method fromArray(...)
>>
>> LvFullRow objects have a number of things about them that are designed to
>> assist in working with list-views. The LvFullRow object can automatically
>> be set as the item data of the list-view item. Then, the list-view columns
>> can be sorted internally, which makes sorting of list-views with a large
>> number of items much, much faster.
>>
>
> I like this idea.
>
>
>>
>> This would not give you faster insertion of a large number of items
>> though.
>>
>
> Is this regardless whether the lvFullRow object is set as item data or
> not? (Don't think my English is correct there!)
>
Setting the LvFullRow object as the item data has no impact on performance.
Rather, it is the fact that a LvFullRow object is made up of a number of
other objects, a LvItem object and a LvSubitem object for each column.
>> A new list-view method, insertRow() could be added that takes an array as
>> an argument is possible
>>
>> lv~insertRow(.array, itemData, stringValueForNil)
>>
>>
> I think it's important that whatever method is chosen, the
> stringValueForNil option be included in one way or another.
>
It could just be the empty string always.
--
Mark Miesfeld
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