• Adobe After Effects Expressions

  Extendscript – Dropdownlist on change and retrieving Compositions

  Posted by Benoit Kergosien on March 29, 2015 at 7:03 pm

  Hi folks!

  I’m trying to create a script based on two dropdownlists:

  the first can access to all the comps of the project
  the second access to specific layers of the comp selected previously with the first dropdownlist.

  I stored the comp’s names in an array and apply them in my first dropdown list.
  But I can’t set up a way to specify the comp selected in the dropdownlist to access to its layers.

  Do I have to used names, index, item id and how to do this?

  So far my code is the following (including errors):

  ==========

  // detect the language
  var utils = this;
  this.loc = function (str)
  {
  var lang = parseFloat(app.version) < 9 ? $.locale : app.isoLanguage;
  return lang.toLowerCase().match(“fr”) ? str.fr : str.en;
  };

  // store Compositions
  function grabAllComps(){
  var proj, itemTotal, curItem, itemAry
  itemAry = new Array();
  proj = app.project;
  itemTotal = proj.numItems;
  for(var i=1; i<=itemTotal; i++){
  curItem=proj.item(i);
  if(curItem instanceof CompItem){
  itemAry[itemAry.length] = curItem.name;
  }
  }
  return itemAry
  }
  // store specific Layers of the Compositon selected in the dropdownlist

  var ddlCompSelected = dropComp.onChange();
  var layers = ddlCompSelected.layers;
  var matchingLayers = new Array();
  var layer;
  function grabSpecificLayers(){
  for (var i = 1; i <= layers.length; i++)
  {
  layer = layers[i];

  if (!(layer instanceof ShapeLayer) && !(layer instanceof CameraLayer) && !(layer instanceof LightLayer) && !(layer.adjustmentLayer) && !(layer instanceof TextLayer) && !(layer.nullLayer))
  {
  matchingLayers[matchingLayers.length] = layer.index +” : ” + layer.name;
  }
  }
  return matchingLayers
  }

  // Steps Text
  this.firstStep = {en:”Select a comp”,fr:”Sélectionner une composition”};
  this.secondStep = {en:”Select a layer”,fr:”Sélectionner un calque”};

  // BUILD UI
  var myWin = new Window(“palette”,””,undefined);
  myWin.orientation = “row”;
  var panelOne = myWin.add(“panel”, undefined,”dropdownlist test”);
  panelOne.add(“statictext”,undefined,utils.loc(this.firstStep));
  var dropComp = panelOne.add(“dropdownlist”,[0,0,200,20],grabAllComps());
  //dropComp.selection=1;
  dropComp.onChange = function () {
  this.selection.text;
  }
  panelOne.add(“statictext”,undefined,utils.loc(this.secondStep));
  var dropLayer = panelOne.add(“dropdownlist”,[0,0,200,20],grabSpecificLayers());
  dropLayer.selection=1;

  myWin.center();
  myWin.show();

  ==========

  Thanks for your help.

  Benoit Kergosien replied 11 years, 1 month ago 1 Member · 0 Replies
• 0 Replies

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