Set Artboard Size to specific size with selected art centered

[BryanPagenkopf]

Hello Everyone,

I have a Script here but it is not quite doing what I hoped it would.   I want to be able to resize an artboard to a specific size based off of a dropdown list.  When I run my script I get the correct size artboard but it opens up a new document.  Any Help would be appreciated!

var choice;

//Creates new Popup
var Pallette = new Window ("dialog", "Artboard Resizer");
Pallette.add ("statictext", undefined, "Pick a size");
Pallette.orientation = "row";

//Dropdown Menu
var myDropdown =  Pallette.add ("dropdownlist", undefined, [
"8.5 x 11",
"11 x 8.5",
"12 x 16",
"16 x 12",
"24 x 12",
"32 x 20"
]);
var myButtonGroup =  Pallette.add ("group");
myButtonGroup.orientation = "column";
myDropdown.selection = 0;
var btnCreate = myButtonGroup.add ("button", undefined, "OK");
btnCreate.onClick = function () {
    choice = myDropdown.selection.text;
    w.button.onClick = function () {

        w.close();
    
    }  
};
Pallette.show ();


var doc;
if (choice == "8.5 x 11") {
    //var doc = app.activeDocument;
    var PTS_IN = 72;
    var width = 8.5 * PTS_IN;
    var height = 11* PTS_IN;
    var presets = app.startupPresetsList;
    var preset = presets[5];
    var doc = new DocumentPreset();
    doc.units = RulerUnits.Inches;
    doc.width = width;
    doc.height = height;
    var doc = app.documents.addDocument(preset, docPreset, false);
    // 
} else if (choice == "11 x 8.5") {
    var doc = app.activeDocument;
    var PTS_IN = 72;
    var width = 11 * PTS_IN;
    var height = 8.5* PTS_IN;
    var presets = app.startupPresetsList;
    var preset = presets[5];
    var docPreset = new DocumentPreset();
    docPreset.units = RulerUnits.Inches;
    docPreset.width = width;
    docPreset.height = height;
    var doc = app.documents.addDocument(preset, docPreset, false);
    // 
} else if (choice == "12 x 16") {
    var doc = app.activeDocument;
    var PTS_IN = 72;
    var width = 12 * PTS_IN;
    var height = 16* PTS_IN;
    var presets = app.startupPresetsList;
    var preset = presets[5];
    var docPreset = new DocumentPreset();
    docPreset.units = RulerUnits.Inches;
    docPreset.width = width;
    docPreset.height = height;
    var doc = app.documents.addDocument(preset, docPreset, false);
    // 
} else if (choice == "16 x 12") {
    var doc = app.activeDocument;
    var PTS_IN = 72;
    var width = 16 * PTS_IN;
    var height = 12* PTS_IN;
    var presets = app.startupPresetsList;
    var preset = presets[5];
    var docPreset = new DocumentPreset();
    docPreset.units = RulerUnits.Inches;
    docPreset.width = width;
    docPreset.height = height;
    var doc = app.documents.addDocument(preset, docPreset, false);
    // 
} else if (choice == "24 x 12") {
    var doc = app.activeDocument;
    var PTS_IN = 72;
    var width = 24 * PTS_IN;
    var height = 12* PTS_IN;
    var presets = app.startupPresetsList;
    var preset = presets[5];
    var docPreset = new DocumentPreset();
    docPreset.units = RulerUnits.Inches;
    docPreset.width = width;
    docPreset.height = height;
    var doc = app.documents.addDocument(preset, docPreset, false);
    // 
}  else if (choice == "32 x 20") {
    var doc = app.activeDocument;
    var PTS_IN = 72;
    var width = 32 * PTS_IN;
    var height = 20* PTS_IN;
    var presets = app.startupPresetsList;
    var preset = presets[5];
    var docPreset = new DocumentPreset();
    docPreset.units = RulerUnits.Inches;
    docPreset.width = width;
    docPreset.height = height;
    var doc = app.documents.addDocument(preset, docPreset, false);
}

[femkeblanco · Accepted solution]

It's because addDocument() creates a new doc. 

Try this

var choice;
//Creates new Popup
var Pallette = new Window ("dialog", "Artboard Resizer");
Pallette.add ("statictext", undefined, "Pick a size");
Pallette.orientation = "row";
//Dropdown Menu
var myDropdown = Pallette.add ("dropdownlist", undefined, [
"8.5 x 11",
"11 x 8.5",
"12 x 16",
"16 x 12",
"24 x 12",
"32 x 20"
]);
var myButtonGroup =  Pallette.add ("group");
myButtonGroup.orientation = "column";
myDropdown.selection = 0;
var btnCreate = myButtonGroup.add ("button", undefined, "OK");
btnCreate.onClick = function () {
    choice = myDropdown.selection.text;
    w.button.onClick = function () {
        w.close();
    }  
};
Pallette.show ();

// new code
if (choice == "8.5 x 11") {
    resizeArtboard(8.5 * 72, 11 * 72);
} else if (choice == "11 x 8.5") {
    resizeArtboard(11 * 72, 8.5 * 72);
} else if (choice == "12 x 16") {
    resizeArtboard(12 * 72, 16 * 72);
} else if (choice == "16 x 12") {
    resizeArtboard(16 * 72, 12 * 72);
} else if (choice == "24 x 12") {
    resizeArtboard(24 * 72, 12 * 72);
}  else if (choice == "32 x 20") {
    resizeArtboard(32 * 72, 20 * 72);
}
function resizeArtboard(w, h) {
    var AB = app.activeDocument.artboards[0];
    var ABR = AB.artboardRect;
    var xC = ABR[0]+((ABR[2]-ABR[0])/2);
    var yC = ABR[1]+((ABR[3]-ABR[1])/2);
    AB.artboardRect = [xC-w/2, yC+h/2, xC+w/2, yC-h/2];
}