Custom command - how to "copy" state (UIX_CmdItemState) from another Command / CommandItem SOLVED

[zarkogajic]

Hi Support,

I'm adding my custom commands to a custom command bar and custom handling them (IUIX_CmdHandler).

I need to set the state of the item (enabled/disabled) to be the same as one of the existing commands, let's call it "enableAs".

My idea was to handle the OnGetItemState method and read the state of the "enableAs", so something like:

Code: Select all

enabledAs : IUIX_Cmd;
...
    enabledAs := InstUI.CmdManager.Cmds.Find('cmd.close'); //so "hijacking" cmd.close to gets its state

    enabledAs.Handler.OnGetItemState(enabledAs, nil, pOwner, cmdItemState);
    
    ... // fails on the above line / no bar displayed and weird stuff like that
    
    nState := cmdItemState;
    

The "enabledAs.Handler.OnGetItemState" line fails whatever I use for the parameters to that method call.

In short: I want to get the state of the "cmd.close" command (as example) and set its state for my custom command's state. How?



-žarko

[Sasha - Tracker Dev Team]

Hello žarko,

In your custom command handler's class, int the OnGetItemState method, you should execute the old handler's method first, and then read it's state value. After that you can add your own logic.

Cheers,
Alex

[zarkogajic]

Hi Alex,

But there's no "oldhandler" for my custom command.

As the handler for my custom command is my custom handler.

In the OnGetItemState I'm trying to read the state of another command (as per my code above) - then set the state for my command's item.

-ž

[Sasha - Tracker Dev Team]

Hello žarko,

Well you can save that command's handler in your custom handler's class and then call it's OnGetItemState method and get the results - this should give more adequate behavior in this case (as you have your command near that one).

Cheers,
Alex

[zarkogajic]

Hi Alex,

The thing is that for both commands the command handler is my custom handler.

So, after a call to (enabledAs is IUIX_Cmd)

Code: Select all

enabledAs := InstUI.CmdManager.Cmds.Find('cmd.close');

The next line of code fails (weird display results):

Code: Select all

enabledAs.Handler.OnGetItemState(enabledAs, nil, pOwner, cmdItemState);

Note that in the above the "Handler" is actually my custom handler / also handling the "cmd.close".

However, if I do:

Code: Select all

//OriginalHandler is the "old hander" for cmd.close
OriginalHandler.OnGetItemState(enabledAs, nil, pOwner, cmdItemState);

Then I get the state and this seems to work.

However, I'm not sure what parameters to pass for pOwner? As in the above pOwner is the owner of my custom command - and obviously not of the command I want to get the state from.

Finally, what is pOwner when handling my custom command ?

-ž

[zarkogajic]

Alex,

Can you provide some help on the pOwner parameter?

-ž

[Sasha - Tracker Dev Team]

Hello žarko,

When we are talking about the commands above the DocumentViewsArea - the owner would be MainView's object. If, for example, the command is in the BookmarksView command bar, the owner is bookmarksView.

Cheers,
Alex

[zarkogajic]

Alex,

Ok, thanks, makes sense.

-ž

[Sasha - Tracker Dev Team]