Photoshop HTML Panel Events : Catch an "Undo" event.

[jonathankemp]

Hey there, 

I'm trying to catch a "undo" event with my HTML panel, but I can't get it to work.  I'm already successfully dealing with numerous events, but for some reasons, the "undo" one isn't working.

charIDToTypeID('undo')

charIDToTypeID('Undo')

stringIDToTypeID('undo')

stringIDToTypeID('Undo')

... all of those return a different TypeID.  Tried them all.  None of them works.

Any clue ?

Thanks. 

J

[Kukurykus]

executeAction(stringIDToTypeID('undoEvent'))

[jonathankemp]

Hi,

This returns the same typeID as

charIDToTypeID('undo')

but it's not triggered by the EventListener... 

[Charu Rajput]

Hi,

Did you try using 

PSEvent.UNDO = "1970168943";

Usage will be like

var cs = new CSInterface();
cs.addEventListener("PhotoshopCallback", function(event) {
console.log(event);
if (event.data.split(',')[0] === "1970168943") {
// Do whatever you want to after undo event.
}
});

*Not tried this one at my end, but yes I use other event like this. So you can give it a try.

[Charu Rajput]

I have tried, whenever I try to do undo, it returns "1684816969", and this id is also return everytime even if you create a rectangle. So, above id mentioned is not working at my end too.

[jonathankemp]

So...you're saying this doesn't work either... right ?

I'm having a hard time believing there's no way to catch an UNDO.  This makes no sense.  I've got a panel that does something when, for instance, you add a new layer.  Now, everything is fine, but if the user uses the UNDO function, my panel needs to know about it, or everything else goes wild.  😕

[Charu Rajput]

Yes, this doesn't work. I am not sure is there any way to catch UNDO event, because I havn't used UNDO event in any of my project till now. Let's try to catch some experts here who may helps us or guide us.

[jonathankemp]

bump.   

Anyone ?

[jonathankemp]

Still wondering about this one... Can't believe there is no way to catch an Undo event and have our extensions behave accordingly...

Anyone ?

[r-bin · Accepted solution]

Try to intercept "invokeCommand" with "commandID" == 101

var idinvokeCommand = stringIDToTypeID( "invokeCommand" );
    var desc15 = new ActionDescriptor();
    var idcommandID = stringIDToTypeID( "commandID" );
    desc15.putInteger( idcommandID, 101 );
    var idkcanDispatchWhileModal = stringIDToTypeID( "kcanDispatchWhileModal" );
    desc15.putBoolean( idkcanDispatchWhileModal, true );
executeAction( idinvokeCommand, desc15, DialogModes.NO );

[jonathankemp]

Great !  Thanks for this !

Actually, simply adding "invokeCommand" to the list of events I am listening for did the trick.

I am curious tho... is there a list of available commandIDs anywhere ?

Thx again !

[jazz-y]

This is the menu command code. Most of them can be obtained using the code:

#target photoshop;

var s2t =stringIDToTypeID;
(r = new ActionReference()).putProperty (s2t('property'), p = s2t('menuBarInfo'))
r.putEnumerated(s2t("application"), s2t("ordinal"), s2t("targetEnum"));

(d = new ActionDescriptor()).putObject(s2t("object"), s2t("object"), executeActionGet(r));
var menuCommands = executeAction(s2t("convertJSONdescriptor"), d).getString(s2t("json"));

for example:

{
    "checked": false,
    "command": 101,
    "enabled": false,
    "kind": "item",
    "menuID": 0,
    "menuShortcut": {
        "commandKey": true,
        "controlKey": false,
        "keyChar": "Z",
        "optionKey": false,
        "shiftKey": false
    },
    "name": "Undo",
    "title": "Und&o",
    "visible": true
},

 The rest can be obtained manually using ScriptListener.8li, or through app.notifiers

r-bin, is there way to call menu commands by their commandID (there are some menu items that cannot be called in the usual way)?

[r-bin]

2 jazz-y

By commandID is impossible, as far as I know.
Most likely, Adobe simply did not complete the code.

Which menu cannot you call in the standard way?

[jazz-y]

for example, loop playback option in timeline menu (commandID 4442)

[r-bin]

Most likely another error that will never be fixed.
The identifier

alert(typeIDToStringID(2245))

has existed at least since the days of CS6.
But never described and absent in PITerminology.h