How can i get visual range of UniStringGrid?

[rgreat]

TopRow?

BottomRow?

 

And how to get updates on these?

[Sherzod]

Hi,

 

We will analyze this

[Sherzod]

Hi,

 

it's a first draft:

function beforeInit(sender, config)
{
    var me = sender;

    me._getFirstVisibleRow = function() {

        i = 0;
        me.store.each(function(rec) {
            ss = Ext.fly(me.normalGrid.view.getNode(rec, true));
            sd = ss.getTop() - (me.el.getTop() + me.normalGrid.getHeaderContainer().getHeight() - (ss.getHeight() / 2));

            if (sd < 0) {
                i += 1;
            } else {
                return false;
            }
        });

        return i;
    };

    me._getLastVisibleRow = function() {

        i = 0;
        me.store.each(function(rec) {
            ss = Ext.fly(me.normalGrid.view.getNode(rec, true));
            sd = ss.getTop() - (me.el.getTop() + me.normalGrid.getHeaderContainer().getHeight() - (ss.getHeight() / 2));

            if (sd < me.normalGrid.view.el.getHeight()) {
                i += 1;
            } else {
                return false;
            }
        });

        return i;
    };
}

Best regards,

[rgreat]

ss = Ext.fly(me.normalGrid.view.getNode(rec, true));

normalGrid - undefined

 

If i just remove "normalGrid" then code only works on 1-st page of the grid.

 

 

UniGUI - 1.0.2.1438

[Sherzod]

Hi,

 

** How can i get visual range of UniStringGrid?

 

Sorry, do you use UniStringGrid or UniDBGrid ?

[rgreat]

UniStringGrid

[Sherzod]

OK, but what do you mean by saying: "only works on 1-st page of the grid" ?!

[rgreat]

Handing rowModel.select:

function rowModel.select(sender, record, index, eOpts)
{
  alert(sender.grid._getFirstVisibleRow()+' '+sender.grid._getLastVisibleRow());
}

Working while TopRow = 0

 

then i scroll grid down, so TopRow > 0 

ss = Ext.fly(me.view.getNode(rec, true)); 

ss = null so 

ss.getTop()

 raises an error.

[Sherzod]

OK, I will check it

[Sherzod]

Hi,

 

OK, I will check it

 

then i scroll grid down, so TopRow > 0 

ss = Ext.fly(me.view.getNode(rec, true)); 

ss = null so 

ss.getTop()

 raises an error.

 

Please can you make a simple testcase for this if possible,
it seems I couldn't reproduce this

[rgreat]

Sorry for delay, but StringGrid shows very inconstant behaviour.

 

It must give alert with TopRow/BottomRow values on cell selection change.

 

Just try to browse the grid (top and bottom parts) and you will see. 

Also test buttons will give errors if clicked in sequence.

 

If i use BeginUpdate/EndUpdate in InitGrid function (see example) it glitches a bit different but still glitched.

 

 

sgtest.zip

[Sherzod]

Hi,

 

Also you can try to use this approach (maybe you need to optimize and adjust to some extent):

function select(sender, record, index, eOpts)
{
    //alert('Top: '+sender.grid._getFirstVisibleRow()+', Bottom: '+sender.grid._getLastVisibleRow());

    firstRowIndex = 0;
    lastRowIndex = 0;
    
    var me=sender.grid;
    startIndex = me.view.all.startIndex;
    endIndex = me.view.all.endIndex;
    
    for (i = startIndex; i < endIndex; i++) {
        if ((Ext.get(me.view.getRow(i)).getTop() - me.headerCt.getHeight() - Ext.get(me.view.getRow(i)).getHeight()) >= 0) {
            firstRowIndex = i;
            break;
        };
    };

    for (i = startIndex; i < endIndex; i++) {
        if ((Ext.get(me.view.getRow(i)).getTop() - me.headerCt.getHeight()) > me.view.getHeight()) {
            lastRowIndex = i;
            break;
        };
    };
    
    alert('Top: '+firstRowIndex+', Bottom: '+lastRowIndex);
}

Best regards,

[rgreat]

It works. Thank you.