Button Control

[Former Member]

Hi Guys,

Need some expert advice. I'm doing a check on wdinit whereby if there is no data for 'phone number' a button will get disabled. At the moment the button is set to enabled. How do i programitacilly disable the button? Thanks

Regards

[abhijeet_mukkawar · Accepted solution]

Hi,

you need to do that in WdDoModifyView() method,

dont worry this will get called before view renders in browser

here do this:

lets say phoneNo is your context attribute where user need to fill phone no

if(wdContext.currenContextElement.getPhoneNo()==null)

//hope PhoneNo is of string type

{

IWDButton butObj = (IWDButton)view.getElement("Button1");

//Button1 is the id of button , check out its properties for this

but.setEnabled(false);

//this will make button enable false

}

put this code in modifyview method

hope it helps

regards

[Former Member · Accepted solution]

Thanks. I tried to add a similar code in wdinit and it just wouldnt allow. Didnt know that we should put it in the modify view. I'll try this one out and see how it goes.

[abhijeet_mukkawar · Accepted solution]

hey buddy,

that code cant be put in WDDoInit(), you have to put that in WDModiFy(),

it will solve your problem i am damn sure

regards

[abhijeet_mukkawar · Accepted solution]

hey Johan ,

have you solved your problem or not ?

let me know if you are facing any problem

regards

[Former Member · Accepted solution]

NO! Dont do it that way.

Use data binding (Button.enabled) or change the enabling state of the action itself. This could be preferable if there are more UI elements bound to this action that also should get enabled or disabled.

Armin

[Former Member · Accepted solution]

I am damn sure that this is not the way to go

Armin

[abhijeet_mukkawar · Accepted solution]

hi,

Armin, will it create any performance problem or something? or when it is preferable?

regards

[Former Member · Accepted solution]

Setting UI element properties by data binding instead of using the setters from wdDoModifyView() has several advantages.

There might be more calls to wdDoModifyView() than you would expect. Using the setter on the UI element will invalidate the view layout such that some clients have to resend the complete view instead of only the changed data.

Armin

[MG3]

Hi Johan

Try this:

1. Create a boolean attribute,say 'enableButton' in your view's context.

2. Assign this attribute to your button's enable property.

3. In your view's wdDoInit method, write:

if(no data in phoneNumber)
        wdContext.<currentContextElement>().setEnableButton("false");

This should take care of your button enabling and disabling.

Thanks

Manoj

[luciano_leitedasilva]

Johan,

You have to create a context attribute, "btnEnable", with the type boolean and bind this attribute with the button's attribute "enabled".

At the wdInit, put this code to disable the button:

wdContext.currentContext().setBtnEnable(false);

Regards,

Luciano

[Greg_Austin]

You have to bind the enabled property of the button to a context variable of type boolean. Setting the variable in your code will enable and disable the button.