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[ScrollIntoView] How to show a given row as the first visible row

More information on this topic is available in the documentation section: /active.howto.scroll/scroll-into-view.html.

Hi Everyone,

I had the need to scroll a grid in order to show a given row at the index "myIndex", as the first row in the visible part of the grid in the page.

Using Alex's function "ScrollIntoView", I was able to show the selected row, but I managed to do so only as the last visible row.

To solve this problem I've simply changed the function this way:

function scrollIntoView(index){ 
            
                var 
row this.getTemplate("row"index); 
                var 
data this.getTemplate("layout").getContent("data"); 
                var 
left this.getTemplate("layout").getContent("left"); 
                var 
scrollbars this.getTemplate("layout").getContent("scrollbars"); 
            
                
try 
                    var 
toppadding parseInt(data.element().currentStyle.paddingTop); 
                    if (
data.element().scrollTop row.element().offsetTop padding ) {                        
                        
top row.element().offsetTop  padding  
                        
left.element().scrollTop top
                        
data.element().scrollTop top
                        
scrollbars.element().scrollTop top
                    } 
            
                    if (
data.element().offsetHeight data.element().scrollTop 
                        
row.element().offsetTop row.element().offsetHeight ) {                        
                        
top row.element().offsetTop ; [b]/* + row.element().offsetHeight  - data.element().offsetHeight */    [/b]            
                                         
left.element().scrollTop top
                        
data.element().scrollTop top
                        
scrollbars.element().scrollTop top
                    } 
                } 
                
catch(error){ 
                    
// ignore errors 
                

              } 
 
(note that I've simply cut the last part of line #16.)

Is this the right way to solve my problem?
Do you think there is a better way?



And another little thing:

var myIndex 10/* just for example...*/

grid.timeout(function(){ 
                  
scrollIntoView.call(gridmyIndex); 
                  [
b]grid.setSelectionIndex(myIndex);[/b]    /*  just to "select" the row.*/
                
});
 
Do you think that I can select the row this way? It works, but seems too simple... :-)




Thanks in advance

Ps. English isn't my motherlanguage...sorry!
Francesco Pezzato
Monday, January 9, 2006



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