How to delay stringgrid send event back to server when change select row?

[newsanti]

How to delay stringgrid send event back to server when user change selection?  (User scroll with keyboard)

[Sherzod]

8 hours ago, newsanti said:

How to delay stringgrid send event back to server when user change selection?  (User scroll with keyboard)

I will check...

[Sherzod]

Seems found a workaround, will try post later. 

[Sherzod]

10 hours ago, newsanti said:

How to delay stringgrid send event back to server when user change selection?  (User scroll with keyboard)

Try this workaround:

function afterrender(sender, eOpts) 
{
    sender.on('keydown', function() {
        if (!sender.getSelectionModel().isSuspended('select')) {
            sender.getSelectionModel().suspendEvent('select')
        }
    });
    sender.on('keyup', function() {
        sender.getSelectionModel().resumeEvent('select');
        sender.getSelectionModel().fireEvent(
            'select', 
            sender.getSelectionModel(), 
            false, 
            sender.getSelectionModel().getCurrentPosition().row, 
            sender.getSelectionModel().getCurrentPosition().column
        )
    });
}

 

[Sherzod]

I think this can also be used for UniDBGrid.

[Sherzod]

3 hours ago, Sherzod said:

function afterrender(sender, eOpts) 
{
    sender.on('keydown', function() {
        if (!sender.getSelectionModel().isSuspended('select')) {
            sender.getSelectionModel().suspendEvent('select')
        }
    });
    sender.on('keyup', function() {
        sender.getSelectionModel().resumeEvent('select');
        sender.getSelectionModel().fireEvent(
            'select', 
            sender.getSelectionModel(), 
            false, 
            sender.getSelectionModel().getCurrentPosition().row, 
            sender.getSelectionModel().getCurrentPosition().column
        )
    });
}

And it gives some optimization.

[newsanti]

On 5/12/2023 at 2:09 PM, Sherzod said:

Try this workaround:

function afterrender(sender, eOpts) 
{
    sender.on('keydown', function() {
        if (!sender.getSelectionModel().isSuspended('select')) {
            sender.getSelectionModel().suspendEvent('select')
        }
    });
    sender.on('keyup', function() {
        sender.getSelectionModel().resumeEvent('select');
        sender.getSelectionModel().fireEvent(
            'select', 
            sender.getSelectionModel(), 
            false, 
            sender.getSelectionModel().getCurrentPosition().row, 
            sender.getSelectionModel().getCurrentPosition().column
        )
    });
}

 

if Grid is Editing Mode...Editing Mode Exist.
How to check Editing Mode in this script?

[Sherzod]

11 hours ago, newsanti said:

if Grid is Editing Mode...Editing Mode Exist.
How to check Editing Mode in this script?

Hello,

Why exactly in this script is not clear to me...

[lema]

Hello, 
I'm trying to apply it, but it doesn't seem to be working for me.
For every keyboard press, it still triggers a HandleEvent.

To be sure, am I applying the workaround in the stringGrid->ClientEvents->ExtEvents->Ext.Grid.Panel->afterrender, right?

I am using D11.3 and v.1.90.0.1567 Complete

 

[Sherzod]

1 hour ago, lema said:

For every keyboard press, it still triggers a HandleEvent

Hello, 

That's right.

This makes sense when you press and hold a key for a while.

[lema]

Hello Sherzod.
I now understand how it works.
But, is there a way to completely disable these events, even for a keyboard or mouse click?
 

[Sherzod]

Hello, 

If the stringgrid is in read-only mode, and not related to other controls, and synchronization with the server is not important to you, then I think it is possible to disable these events.

[lema]

23 minutes ago, Sherzod said:

Hello, 

If the stringgrid is in read-only mode, and not related to other controls, and synchronization with the server is not important to you, then I think it is possible to disable these events.

Exactly. I use the stringGrid just to show some data. No editing, no sync.

[Sherzod]

7 hours ago, lema said:

Exactly. I use the stringGrid just to show some data. No editing, no sync.

Okay, then try this approach:

procedure TMainForm.UniFormCreate(Sender: TObject);
begin
  UniStringGrid1.JSInterface.JSAddListener('viewready', 'function(){this.getSelectionModel().suspendEvent("select")}');
end;

 

[lema]

4 hours ago, Sherzod said:

Okay, then try this approach:

procedure TMainForm.UniFormCreate(Sender: TObject);
begin
  UniStringGrid1.JSInterface.JSAddListener('viewready', 'function(){this.getSelectionModel().suspendEvent("select")}');
end;

 

Yes! Thank you, Master !

Note: It works only when Grid rowselect is NOT enabled.
To cover this case as well -without knowing if it's the correct way-
I changed it to 'suspendEvents(),' and it seems to be working.

UniStringGrid1.JSInterface.JSAddListener('viewready', 'function(){this.getSelectionModel().suspendEvents()}');

 

[Sherzod]

Hello,

18 minutes ago, lema said:

Note: It works only when Grid rowselect is NOT enabled.

I couldn't reproduce. Works for me.

19 minutes ago, lema said:

I changed it to 'suspendEvents(),' and it seems to be working.

Yes, this disables all events (this is not recommended).

[lema]

20 minutes ago, Sherzod said:

Hello,

I couldn't reproduce. Works for me.

I am testing with the original StringGrid Demo (attached is my test).
The only change I made, is setting the property goRowSelect to True.
The suspendEvent("select") doesn't work with me (v.1.90.0.1567)

Sherzod, I don't want to waste your time, don't bother with the issue.
I think it's okay unless there's a problem in the application that I can't see right now...

Thank you again !

 

StringGrid Demo.zip

[Sherzod]

7 minutes ago, lema said:

StringGrid Demo.zip 4.49 kB · 0 downloads

Sorry, maybe I made a mistake during testing.
Try using selectionchange instead of select.

[picyka]

I'm sorry to give my opinion here, with the arrival of Grid Ligth, this issue will improve, right?

[Sherzod]

1 minute ago, picyka said:

I'm sorry to give my opinion here, with the arrival of Grid Ligth, this issue will improve, right?

Hello,

In some sense yes.

[picyka]

Disabling this feature there, if I want to get the data from the line to do something on the server, how would I have to synchronize it?

[Sherzod]

3 minutes ago, picyka said:

Disabling this feature there, if I want to get the data from the line to do something on the server, how would I have to synchronize it?

Well, there will be some method, say SaveChanges, in which the changed data is sent to the server...

[picyka]

6 horas atrás, Sherzod disse:

Ok, então tente esta abordagem:

procedure TMainForm.UniFormCreate(Sender: TObject);
begin
  UniStringGrid1.JSInterface.JSAddListener('viewready', 'function(){this.getSelectionModel().suspendEvent("select")}');
end;

 

And in this case here, let's say I want to click on an actionColumn to open a Form, how would I do it?
I would have to position the dataset on the server

[Sherzod]

3 minutes ago, picyka said:

And in this case here, let's say I want to click on an actionColumn to open a Form, how would I do it?
I would have to position the dataset on the server

 

13 minutes ago, picyka said:

with the arrival of Grid Ligth

All these nuances are still worth considering.

[picyka]

2 minutos atrás, Sherzod disse:

 

Todas essas nuances ainda valem a pena considerar.

Alright, let's wait, a big hug!