onItemChange event

Hi,

I want to handle onItemChange event on one of the item. The problem is if the value in the item is modified manually, the event is getting called. But in case the value is modified using FormAPI's IWItem.setValue() method, the event is not called.

What can be the way around for this?

My requirement is that:

I have one textare item into which there is a maximum limit of chars.
When the user has entered the content and if no of chars are exceeding max limit, I give an alert to user to reduce the length of text. I set the focus back to the field.
In another scenario this field is also auto-populated using IWItem.setValue() method. In that case also I want to alert the user if length is exceeding the max limit. But its not happening as onItemChange event is not getting called in that case.

Any Ideas? Is there any way to handle on key press even on the texarea field? Even that I'll solve my purpose..

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kaalraa

Hi,

I want to handle onItemChange event on one of the item. The problem is if the value in the item is modified manually, the event is getting called. But in case the value is modified using FormAPI's IWItem.setValue() method, the event is not called.

What can be the way around for this?

My requirement is that:
I have one textare item into which there is a maximum limit of chars.
When the user has entered the content and if no of chars are exceeding max limit, I give an alert to user to reduce the length of text. I set the focus back to the field.
In another scenario this field is also auto-populated using IWItem.setValue() method. In that case also I want to alert the user if length is exceeding the max limit. But its not happening as onItemChange event is not getting called in that case.
Any Ideas? Is there any way to handle on key press even on the texarea field? Even that I'll solve my purpose..

Kshitiz,

In similar situation... i have captured the value of textarea using onSaveValid event. Also i have not used .. onItemChange.

Hope this would solve out with your requirements as well.

ISCBorisB

In another scenario this field is also auto-populated using IWItem.setValue() method. In that case also I want to alert the user if length is exceeding the max limit. But its not happening as onItemChange event is not getting called in that case.
Any Ideas? Is there any way to handle on key press even on the texarea field? Even that I'll solve my purpose..

You can call your event handler function directly. Something like:

IWItem.setValue();
YourOnChangeHandlerFunction(IWItem); // The same Function you use in addItemHandler

Sailesh

Check the lenght of content on IWItem.setValue() by calling the same function which you are using onItemChange.

kshitiz

You can call your event handler function directly. Something like:

IWItem.setValue();
YourOnChangeHandlerFunction(IWItem); // The same Function you use in addItemHandler

I think I have not explained clearly:

1. User types in text in textarea
2. User comes out of textarea
3. onChangeItem event is fired and my function checks the length.
4. If length has exceeded it shows an alert msg to user, put the focus back to textarea
5. User doesn't correct the length and comes out of textarea. This time onChangeItem event is not fired and length of text will not be checked.
6. User will be able to save the DCR with wrong value unless I again check the length on save which I don't want to do.

I tried to handle the situation by emptying the value of textarea and again setting back to original value using IWItem.setValue() method. I was hoping since I have changed the value of the item, onChangeItem event will be fired again. But I found out that this doesn't happen.

I guess the only solution is to check the length of field at time of Save too. Only if FormAPI had provided more event handlers like keypress etc, my life would have been simpler

Migrateduser

Hi Kshitiz,

My best bet is to handle your requirement when the DCR is saved. Call a function on onSave event, if the number of characters in the text area is vaild let the save procedure continue and when not valid do not save the DCR + give a alert to the user.

You do not need to do this twice, doing it on onSave event will be enough.

Regards
Dixit

Sailesh

You can also use validation regex to handle this [A-Z][a-z][0-300] in the textarea.

Note: Syntex may not be absoultely correct but very close to it.

Migrateduser

You can also use validation regex to handle this [A-Z][a-z][0-300] in the textarea.

Note: Syntex may not be absoultely correct but very close to it.

Validation Syntax is a good option but this didnot work for Text Areas in TS 5.5.2... i am not sure about TS 6 onwards.
Probably you might have used it in higher TS versions.

-Dixit
John Deere TCI, Pune

Adam Stoller

Validation Syntax is a good option but this didnot work for Text Areas in TS 5.5.2... i am not sure about TS 6 onwards.
Probably you might have used it in higher TS versions.

-Dixit
John Deere TCI, Pune

Note the

[0-300]

should be

{0,300}

- but even so - you're better off using FormAPI and capturing the value of the textarea in a variable and checking it's length - something like:

var ta_value = IWDatacapture.getItem('xpath').getValue();
if (ta_value.length > 300){
    // handle invalid situation
}
else {
   // handle valid situation
}

(the syntax may not be 100% correct - but it should be pretty close - I believe)