Passing Parameters to Button Press Handler

[former_member1090459]

Hi everyone. The following works:

var oDialog = new sap.ui.commons.Dialog();
oDialog.setTitle(sName);

oButton = new sap.ui.commons.Button();
oButton.setText("Close");
oButton.attachPress(HandleButtonClick);
oDialog.addButton(oButton);

// Open Dialog 
oDialog.open();


function HandleButtonClick()
{    oDialog.close();        }

But this doesn't work when I pass the reference of oDialog

var oDialog = new sap.ui.commons.Dialog();
oDialog.setTitle(sName);

oButton = new sap.ui.commons.Button();
oButton.setText("Close");
oButton.attachPress(HandleButtonClick(oDialog));
oDialog.addButton(oButton);

// Open Dialog 
oDialog.open();


function HandleButtonClick(oDialog)
{    oDialog.close();        }

Basically, to write generic functions.

[former_member183518 · Accepted solution]

You can pass the dialog instance as a next parameter after the event listener. In the event listener, you can access the dialog instance referring to *this*.

oButton.attachPress(HandleButtonClick , oDialog );

function HandleButtonClick(){  
     this.close();       // this -> oDialog
}

[former_member1090459 · Accepted solution]

Thanks for your help. Just for the sake of curiosity, what would the syntax be if we were to pass two variables to the function? Or are we supposed to pass an array object?

oButton.attachPress(HandleButtonClick , oDialog1, oDialog2 );  

function HandleButtonClick()
{    
    this.close();       // this -> oDialog  // What would the syntax be???
}  

Thanks again guys.

[former_member183518 · Accepted solution]

attachPress event doesn't allow multiple parameters to be passed. But You can wrap all your parameters into a single Object and pass it.

oButton.attachPress(HandleButtonClick , {param1:oDialog1, param2:oDialog2});

function HandleButtonClick(){
   console.log(this.param1) // would refer to the oDialog1
}

SAPUI5 SDK - Demo Kit

[karthikarjun]

Hi Jibran,

Wil this help...? JS Bin - Collaborative JavaScript Debugging

attachPress - is an event - you can invoke method here.

But If you want to pass argument, you should make a function call in attachPress event

Thanks,

Karthik A