Activate a button when pressing Enter [Photoshop]

[Feast]

Hello!
I would like that when the user presses the Enter key, it presses the button called "Export" in my script.
Or if I could just know when the player presses Enter to call a function that would work too.

Here's the script I'm trying to use it for (javascript), it exports PNG's from all the groups in your active document. If someone's interested:

// for saving files
var doc = app.activeDocument;
var Path = doc.path;  // set the .png next to .psd
//Path = "~/Desktop/test"; // personal folder
Path = "D:\\GameDevelopment";
var Name = doc.name.replace(/\.[^\.]+$/, '');
var Prefix = "PROP_";
var Suffix = "";
var doc = app.activeDocument;
// AUTOMATIC OPTIONS <= CHANGE HERE
var x = 512;
var y = 512;
var ActivateBlur = true;
var BlurStrength = 10;
var saveFile = File(Path + "/" + Name + Suffix + ".jpg");
// AUTO OPTIONS
var dlg = new Window('dialog', 'PNG Batch Save');
dlg.onEnterKey = function() { Algorithm();};
var G1 = dlg.add('group', undefined);  
dlg.msgSt = G1.add('statictext', undefined,
'Path:');
dlg.addEventListener('enterKey', Algorithm);
dlg.msgSt.alignment = [ScriptUI.Alignment.LEFT,
ScriptUI.Alignment.TOP]
dlg.msgEt = G1.add('edittext', [0,0,400,20],
Path, {name: "path",multiline:false,noecho:false,readonly:false});
// Resolution UI
dlg.msgPnl = dlg.add('panel', undefined, 'Resolution');
dlg.msgPnl.orientation = "row";
dlg.titleSt = dlg.msgPnl.add('statictext', undefined,
'X:');
dlg.titleEt = dlg.msgPnl.add('edittext', undefined,
x, {name: "x"});
dlg.titleSt = dlg.msgPnl.add('statictext', undefined,
'Y:');
dlg.titleEt = dlg.msgPnl.add('edittext', undefined,
y, {name: "y"});
// Blur UI
dlg.msgPnl = dlg.add('panel', undefined, 'Blurred');
dlg.msgPnl.orientation = "row";
dlg.hasBtnsCb = dlg.msgPnl.add('checkbox', undefined,
'+ Blurred Version', {name:"isBlur"});
dlg.msgSt = dlg.msgPnl.add('edittext', undefined,
BlurStrength, {name:"blurStrength"});
dlg.hasBtnsCb.value = ActivateBlur;
ActivateBlur = dlg.hasBtnsCb.value;
// Buttons UI
dlg.btnPnl = dlg.add('panel', undefined, 'Save');
dlg.btnPnl.buildBtn = dlg.btnPnl.add('button', undefined, 'Export');
dlg.btnPnl.buildBtn.addEventListener('click', Algorithm);
dlg.btnPnl.onClick = Algorithm;
dlg.btnPnl.buildBtn = dlg.btnPnl.add('button', undefined, 'Cancel');
dlg.show();
// Algorithm must be called when clicking on Export button
function Algorithm() 
{
    GetUIValues();    
    dlg.close();
    var doc = app.activeDocument;
    // need an array to know which grp was on or off
    var oldLayers = new Array();
    for (var i = 0; i < doc.layerSets.length; i++) {
        if (doc.layerSets.visible == true) {
            oldLayers.push(1);
        };
        if (doc.layerSets.visible == false) {
            oldLayers.push(0); // not visible
        };
    };
    // set all groups off
    for (var i = 0; i < doc.layerSets.length; i++) {
        doc.layerSets.visible = false;
    }
    for (var i = 0; i < doc.layerSets.length; i++) {
        // if the layer used to be visible
        if (oldLayers == 1) {
            //alert("Found a visible grp!");
            // we set it visible
            doc.layerSets.visible = true;
            TrimResizeAndSave(doc.layerSets);
            if (ActivateBlur) CreateBlurredVersion(doc.layerSets);
            // we set it invisible again
            doc.layerSets.visible = false;
        };
    }
    // set whichever groups were originally on visible again
    for (var i = 0; i < doc.layerSets.length; i++) {
        if (oldLayers == 1)
            doc.layerSets.visible = true;
    }
}
function GetUIValues() {
    //alert(dlg.findElement("x").text);
    x = dlg.findElement("x").text;
    //alert(dlg.findElement("y").text);
    y = dlg.findElement("y").text;
    //alert(dlg.findElement("blurStrength").text);
    BlurStrength = dlg.findElement("blurStrength").text;
    //alert(dlg.findElement("isBlur").value);
    ActivateBlur = dlg.findElement("isBlur").value;
    Path = dlg.findElement("path").text;
    var c = /\\/g;
    if (Path.match(c)) {
//~         alert("found \\");
Path = Path.replace(c, "/");
    };
    c = ':';
    if (Path.match(c )) {
//~         alert("found :");
        Path = Path.replace(c , '');
    };
    Path = "/" + Path;
}
function SaveJPEG(saveFile, jpegQuality) {
    jpgSaveOptions = new JPEGSaveOptions();
    jpgSaveOptions.embedColorProfile = true;
    jpgSaveOptions.formatOptions = FormatOptions.STANDARDBASELINE;
    jpgSaveOptions.matte = MatteType.NONE;
    jpgSaveOptions.quality = jpegQuality;
    activeDocument.saveAs(saveFile, jpgSaveOptions, true, Extension.LOWERCASE);
}
function SavePNG(saveFile) {
    pngSaveOptions = new PNGSaveOptions(9, false);
    activeDocument.saveAs(saveFile, pngSaveOptions, true, Extension.LOWERCASE);
}
function TrimResizeAndSave(group) {
    var doc = app.activeDocument;
    var savedState = doc.activeHistoryState;
    // trim
    doc.trim(TrimType.TRANSPARENT, true, true, true, true);
    // resize algorithm
    if (doc.height > doc.width) {
        doc.resizeImage(null, UnitValue(y, "px"), null, ResampleMethod.AUTOMATIC);
    }
    else {
        doc.resizeImage(UnitValue(x, "px"), null, null, ResampleMethod.AUTOMATIC);
    }
    // we save the ouput
    saveFile = File(Path + "/" + Prefix + group.name + Suffix + ".png");
    SavePNG(saveFile);
    doc.activeHistoryState = savedState;
}
function CreateBlurredVersion(group)
{ 
    var doc = app.activeDocument;
    var savedState = doc.activeHistoryState;
    // trim
    doc.trim(TrimType.TRANSPARENT, true, true, true, true);
    // resize algorithm
    if (doc.height > doc.width) {
        doc.resizeImage(null, UnitValue(y, "px"), null, ResampleMethod.AUTOMATIC);
    }
    else {
        doc.resizeImage(UnitValue(x, "px"), null, null, ResampleMethod.AUTOMATIC);
    } 
    // blurred output
    var blurredPath = File(Path + "/" + "BLURRED_" + Prefix + group.name + Suffix + ".png");
    // transform document to smart object
     var result = createSmartObject(group);
     result.applyGaussianBlur(BlurStrength, BlurStrength);
    // save
    SavePNG(blurredPath);
    doc.activeHistoryState = savedState;
}
// create smartobject from specified layer or layerSet/group
function createSmartObject(layer)
{
   var doc = app.activeDocument;
   var layer = layer != undefined ? layer : doc.activeLayer;
   if(doc.activeLayer != layer) doc.activeLayer = layer;
   try
   {
      var idnewPlacedLayer = stringIDToTypeID( "newPlacedLayer" );
      executeAction( idnewPlacedLayer, undefined, DialogModes.NO );
      return doc.activeLayer;
   }
   catch(e)
   {
      return undefined;
   }
}// JavaScript Document

[r-bin]

before line with dlg.show() insert such code

function key_handle(e)

    {

    switch (e.keyIdentifier)

        {

        case "Enter":

            dlg.btnPnl.buildBtn.notify();

            break;

        }

    }

dlg.addEventListener ("keydown", key_handle, false); 

[Feast]

Thanks for helping me out r-bin!

I did as you suggested but it doesn't work, am I doing it wrong?

// Buttons UI  
dlg.btnPnl = dlg.add('panel', undefined, 'Save');  
dlg.btnPnl.buildBtn = dlg.btnPnl.add('button', undefined, 'Export');  
dlg.btnPnl.buildBtn.addEventListener('click', Algorithm);  
dlg.btnPnl.onClick = Algorithm;  
dlg.btnPnl.buildBtn = dlg.btnPnl.add('button', undefined, 'Cancel');  
function key_handle(e)
    {
    switch (e.keyIdentifier)
        {
        case "Enter":
            dlg.btnPnl.buildBtn.notify();
            break;
        }
    }  
dlg.addEventListener ("keydown", key_handle, false); 
dlg.show();  

[r-bin · Accepted solution]

you need to activate some element in dialog.

insert one more line like this

dlg.msgEt.active = true;

[Feast]

Thanks that did it! Have a good day and thanks again!