// Selected_Comps_Changer.jsx
// version 1.9 by CR Green (www.crgreen.com)
// (v1.9 adds a close function to the ok button, which, previous to AE CS3, closed automatically)
// A Green Digital Entrustment
// Requested by Yorgo Alexopoulos The Great

//globals: ////
var weCanCloseWindow = true;
var win = new Window('dialog', 'Change Selected Comps',[300,100,800,560]);
var w = buildUI();
var probStr = "";
/////////////

start();

function bigHelp() {
   var bigHelpTxt = "Perhaps I can help ...\rIf you want to change a setting in your selected comps, enter something in a field, or click a \"Do\" checkbox. " + 
   "All fields after the first two must be numbers.\rRegarding name changing:\rFor search and replace, enter text in both of the top two fields; " +
   "If you want to add text to the beginning or end of the comp names, uncheck the \"do search\" checkbox, enter the text to be added in the " +
   "second field, and choose the appropriate radio button to the right.\rNon-numbers in fields which require numbers will result in that comp setting " + 
   "being ignored, and those errors are reported.";
   alert(bigHelpTxt);
}

function doAbout() {
   var aboutTxt = "Selected_Comps_Changer (version 1.8)\rThis script was written for Yorgo Alexopoulos by Christopher R. Green, at Yorgo's request for something more-or-less like it. " +
   "It is one of many scripts available from crgreen.com. Feel free to give Chris feedback.";
   alert(aboutTxt);
}

function start() {
   if (app.project != null) {
      if (app.project.items.length < 2) {
         alert("Please select at least two comps.");
      } else {
         var everyItem = app.project.items;                                          
         var thisManySelComps = 0;
         for (var i = everyItem.length; i >= 1; i--) {
            item = everyItem[i];
            if ((item instanceof CompItem) && item.selected) {
               thisManySelComps++;
            }
         }//for (var i = items.length; i >= 1; i--)
         //finally ... 
         if ( (w != null) && (thisManySelComps > 1) ) {
            // everything is controlled by the dialog at this point ...
            w.show();
            
         } else {
            alert("Please select at least two comps.");
         }
      }
   }
   
}

function buildUI() {
   if (win != null) {
      win.basicPnl = win.add('panel', [20,26,480,256], '"Basic":');
      win.addHeadRad = win.basicPnl.add('radiobutton', [309,80,445,102], 'add to head');
      win.addHeadRad.enabled = false;
      win.addTailRad = win.basicPnl.add('radiobutton', [309,103,445,125], 'add to tail');
      win.addTailRad.value = true;
      win.addTailRad.enabled = false;
      win.advPnl = win.add('panel', [20,263,480,398], '"Advanced":');
      
      win.nameSearchLabel = win.add('statictext', [54,48,232,70], 'Search in comp names for:');
      win.nameSearchT = win.add('edittext', [65,73,305,95], '');
      
      win.nameDoSearchCheck = win.add('checkbox', [310,73,405,95], 'do search');
      win.nameDoSearchCheck.value = true;
      win.nameDoSearchCheck.onClick = function () {
         doLinkedEmpty(this, win.nameSearchT);
         doLinkedEnabled(this, win.nameSearchT);
         doOppositeEnabled(this, win.addHeadRad);
         doOppositeEnabled(this, win.addTailRad);
      };
      
      win.nameReplaceLabel = win.add('statictext', [54,106,260,128], ' ... and replace with (or add):');
      win.nameReplaceT = win.add('edittext', [65,131,305,153], '');
      // at least in version 6.5, there seems to be a bug in the implementation of 'name' for control objects
      //(unless i'm missing something);
      // docs say that every control object can be given a 'name' when '.add'ing, but it seems only buttons can be given names
      // in this way; everything else (or, at least an edittext object) has to be given a name after '.add'ing
      win.nameReplaceT.name = "nameReplaceT";
      //now this edittext field can be tested for by name, below
      // well, you see ... i originally had coded this differently; now i don't need the names, but i'm keeping them
      // here, just in case ...
      win.widthLabel = win.add('statictext', [41,179,86,201], 'Width:');
      win.widthT = win.add('edittext', [89,177,166,199], '');
      win.widthT.name = "widthT";
      win.heightLabel = win.add('statictext', [41,203,86,225], 'Height:');
      win.heightT = win.add('edittext', [89,201,166,223], '');
      win.heightT.name = "heightT";
      win.reCenterCheck = win.add('checkbox', [41,226,166,248], ' re-center layers');
      win.reCenterCheck.value = true;
      win.reCenterHuhBtn = win.add('button', [170,226,200,246], '?');
      win.reCenterHuhBtn.onClick = reCenterHelp;
      win.frRLabel = win.add('statictext', [187,179,256,201], 'Framerate:');
      win.frRT = win.add('edittext', [259,177,329,199], '');
      win.frRT.name = "frRT";
      win.lenLabel = win.add('statictext', [339,179,384,201], 'Length:');
      win.lenT = win.add('edittext', [388,177,464,199], '');
      win.lenT.name = "lenT";
      win.ratioLabel = win.add('statictext', [268,228,384,250], 'Pixel Aspect Ratio:');
      win.ratioT = win.add('edittext', [388,226,428,248], '');
      win.ratioT.name = "ratioT";
      win.ratioHuhBtn = win.add('button', [438,226,468,246], '?');
      win.ratioHuhBtn.onClick = paRatioHelp;
      win.okBtn = win.add('button', [398,417,478,439], 'OK', {name:'ok'});
      win.okBtn.onClick = function () { doMain(this.parent);this.parent.close(1); };
      win.cancBtn = win.add('button', [298,417,378,439], 'Cancel', {name:'cancel'});
      win.cancBtn.onClick = function () {this.parent.close(0)};
      win.helpBtn = win.add('button', [111,417,191,439], 'Help!', {name:'help'});
      win.helpBtn.onClick = bigHelp;
      win.aboutBtn = win.add('button', [21,417,101,439], 'About', {name:'about'});
      win.aboutBtn.onClick = doAbout;
      win.angleLbl = win.add('statictext', [24,287,177,309], 'Shutter Angle (max. 720):');
      win.phaseLbl = win.add('statictext', [245,287,425,309], 'Shutter Phase (-360 to 360):');
      win.angleT = win.add('edittext', [185,285,225,307], '');
      win.angleT.name = "angleT";
      win.phaseT = win.add('edittext', [426,285,466,307], '');
      win.phaseT.name = "phaseT";
      win.doPresFRCheck = win.add('checkbox', [66,342,106,364], 'Do:');
      win.doPresFRCheck.value = false;
      win.presFRCheck = win.add('checkbox', [107,342,437,364], 'Preserve framerate when nested or in render queue');
      win.presFRCheck.enabled=false;
      win.doPresFRCheck.onClick = function () {doLinkedEnabled(this, win.presFRCheck)};
      win.doPresRezCheck = win.add('checkbox', [66,366,106,388], 'Do:');
      win.doPresRezCheck.value = false;
      win.presRezCheck = win.add('checkbox', [107,366,437,388], 'Preserve resolution when nested');
      win.presRezCheck.enabled = false;
      win.doPresRezCheck.onClick = function () {doLinkedEnabled(this, win.presRezCheck)};
      win.explainEmptiesLbl = win.add('statictext', [10,4,490,22], '(BLANK FIELDS MEAN IGNORE SETTINGS)');
      win.explainEmptiesLbl.justify = 'center';
   win.explainDoLbl = win.add('statictext', [54,320,446,340], '(An unchecked "Do" checkbox means ignore setting)');   }
   return win
}

function paRatioHelp() {
   alert("The \"known and accurate\" set (please use these number formats):\r" +
   "1	   (Square Pixel)\r.9	   (D1/DV NTSC)\r1.2	   (D1/DV NTSC Widescreen)\r1.07	   (D1/DV PAL)\r" +
   "1.42	   (D1/DV PAL Widescreen)\r2	   (Anamorphic 2:1)\r.95	   (D4/D16 Sandard)\r1.9	   (D4/D16 Anamorphic)");
}

function reCenterHelp() {
   alert("Recentering is meant primarily for 2D layers: you may see unexpected results if you have complex 3D at work in the comps. " +
   "This operation will UNLOCK all locked layers!\r\r" + 
   "This button is only meaningful if you are changing comp dimensions.");
}

function makeParentLayerOfAllUnparented(theComp, newParent)
{
   for (var i = 1; i <= theComp.numLayers; i++) {
      var curLayer = theComp.layer(i);
      if (curLayer.locked) {curLayer.locked = false;}
      if (curLayer != newParent && curLayer.parent == null) {
         curLayer.parent = newParent;
      }
   }
}

function moveParent(pa, axis, amt) {
   //null is at 000 anyway, so no math needed
   newPos = [0, 0, 0];
   newPos[axis] = amt;
   pa.position.setValue(newPos);
}

function doMain(theDialog) {
   //alert("doing main");
   
   var everyItem = app.project.items;
   //      first we build the comp collection so that renaming doesn't mess up because comps
   //      jump to new positions with new names!!
   selectedComps = new Array();
   for (var i = everyItem.length; i >= 1; i--) {
      eyeTem = everyItem[i];
      if ((eyeTem instanceof CompItem) && eyeTem.selected) {
         selectedComps[selectedComps.length] = eyeTem;
      }
   }
   app.beginUndoGroup("Change Selected Comps");
   for (var n = (selectedComps.length-1); n >= 0; n--) {
      item = selectedComps[n];
      // in order of options:
      // 1-comp names:
      //       if both are "", ignore, if search empty and replace not, do add to start or end
      //       if both are not empty, do search and replace
      ////// first name stuff
      if (theDialog.nameSearchT.text != "") {
         oldName = item.name;
         sear = theDialog.nameSearchT.text;
         repl = theDialog.nameReplaceT.text
         newName = oldName;
         //keep renaming until searchstring is no longer in name:
         while (newName.indexOf(sear) != -1) {
            newName = (newName.replace(sear, repl));
            //names should not be over 31 chars long, so we trim if we need to
         }//while
         newName=(newName.substr(0,31));
         item.name = newName;
      } else {
         if ( (!theDialog.nameDoSearchCheck.value) && (theDialog.nameReplaceT.text != "") ) {
            oldName = item.name;
            if (theDialog.addTailRad.value) {
               newName = (oldName + theDialog.nameReplaceT.text);
            } else {
               newName = (theDialog.nameReplaceT.text + oldName);
            }
            newName = (newName.substr(0,31));
            item.name = newName;
         }
      }
      ///// 2- width
      //////////////////////////////   now with re-center   ////////////
      // limit=30000
      if (theDialog.widthT.text != "") {
         if (isNaN(parseFloat(theDialog.widthT.text))) {
            probStr = (probStr + "Not a number value for Width\r");
            theDialog.widthT.text = "";//empty field if it is bad so we don't try anymore
         } else {
            oldWidth = item.width;
            newWidth = Math.floor(parseFloat(theDialog.widthT.text));
            if ( (newWidth > 30000) || (newWidth < 4) ) {
               probStr = (probStr + "Value out of range for Width\r");
               theDialog.widthT.text = "";//empty field if it is bad so we don't try anymore
            } else {
               if (oldWidth != newWidth) {
                  item.width = newWidth;
                  // if 'recenter' checkbox is checked:
                  if (theDialog.reCenterCheck.value) {
                     thisMuch = (-1 * (oldWidth - newWidth)) *.5;
                     null3DLayer = item.layers.addNull();
                     null3DLayer.threeDLayer = true;
                     doomedNullSrc = null3DLayer.source;
                     null3DLayer.position.setValue([0,0,0]);
                     // Set null3DLayer as parent of all layers that don't have parents.  
                     makeParentLayerOfAllUnparented(item, null3DLayer);
                     //null, axis, amt
                     moveParent(null3DLayer, 0, thisMuch);
                     null3DLayer.remove();
                     doomedNullSrc.remove();
                  }
               }
            }
         }
      }
      ///// 3- height
      // limit=30000
      if (theDialog.heightT.text != "") {
         if (isNaN(parseFloat(theDialog.heightT.text))) {
            probStr = (probStr + "Not a number value for Height\r");
            theDialog.heightT.text = "";//empty field if it is bad so we don't try anymore
         } else {
            oldHeight = item.height;
            newHeight = Math.floor(parseFloat(theDialog.heightT.text));
            if ( (newHeight > 30000) || (newHeight < 4) ) {
               probStr = (probStr + "Value out of range for Height\r");
               theDialog.heightT.text = "";//empty field if it is bad so we don't try anymore
            } else {
               if (oldHeight != newHeight) {
                  item.height = newHeight;
                  // if 'recenter' checkbox is checked:
                  if (theDialog.reCenterCheck.value) {
                     thisMuch = (-1 * (oldHeight - newHeight)) *.5;
                     null3DLayer = item.layers.addNull();
                     null3DLayer.threeDLayer = true;
                     doomedNullSrc = null3DLayer.source;
                     null3DLayer.position.setValue([0,0,0]);
                     // Set null3DLayer as parent of all layers that don't have parents.  
                     makeParentLayerOfAllUnparented(item, null3DLayer);
                     //null, axis, amt
                     moveParent(null3DLayer, 1, thisMuch);
                     null3DLayer.remove();
                     doomedNullSrc.remove();
                  }
               }
            }
         }
      }
      //////////////////////////////////////////
      ///// 4- pixel aspect ratio
      if (theDialog.ratioT.text != "") {
         if (isNaN(parseFloat(theDialog.ratioT.text))) {
            probStr = (probStr + "Not a number value for Pixel Aspect Ratio\r");
            theDialog.ratioT.text = "";//empty field if it is bad so we don't try anymore
         } else {
            item.pixelAspect = parseFloat(theDialog.ratioT.text);
         }
      }
      ///// 5- framerate
      // limit = 1-99
      newFR = item.frameRate;
      if (theDialog.frRT.text != "") {
         if (isNaN(parseFloat(theDialog.frRT.text))) {
            probStr = (probStr + "Not a number value for Framerate\r");
            theDialog.frRT.text = "";//empty field if it is bad so we don't try anymore
         } else {
            maybeNewFR = parseFloat(theDialog.frRT.text);
            if ( (maybeNewFR > 99) || (maybeNewFR < 1) ) {
               probStr = (probStr + "Value out of range for Framerate\r");
               theDialog.frRT.text = "";//empty field if it is bad so we don't try anymore
            } else {
               newFR = maybeNewFR;
               item.frameRate = newFR;
            }
         }
      } else {
         newFR = item.frameRate;
      }
      ///// 6- length
      // limit=323676
      if (theDialog.lenT.text != "") {
         if (isNaN(parseFloat(theDialog.lenT.text))) {
            probStr = (probStr + "Not a number value for Length\r");
            theDialog.lenT.text = "";//empty field if it is bad so we don't try anymore
         } else {
            newDur = parseFloat(theDialog.lenT.text);
           durCalc = newDur/newFR;

            if ( (durCalc > 323676) || (durCalc < 1) ) {
               probStr = (probStr + "Value out of range for Length\r");
               theDialog.frRT.text = "";//empty field if it is bad so we don't try anymore
            } else {

             item.duration = durCalc;
            }
         }
      }
      ///// 7- shutter angle
      if (theDialog.angleT.text != "") {
         if (isNaN(parseFloat(theDialog.angleT.text))) {
            probStr = (probStr + "Not a number value for Shutter Angle\r");
            theDialog.angleT.text = "";//empty field if it is bad so we don't try anymore
         } else {
            newValue = parseFloat(theDialog.angleT.text);
            
            if (newValue > 720) {
               probStr = (probStr + "Number given for Shutter Angle too high\r");
               theDialog.angleT.text = "";//empty field if it is bad so we don't try anymore
            } else if (newValue < 0) {
               probStr = (probStr + "Number given for Shutter Angle too low\r");
               theDialog.angleT.text = "";//empty field if it is bad so we don't try anymore
            } else {
               item.shutterAngle = newValue;
            }
         }
      }
      ///// 8- shutter phase
      if (theDialog.phaseT.text != "") {
         if (isNaN(parseFloat(theDialog.phaseT.text))) {
            probStr = (probStr + "Not a number value for Shutter Phase\r");
            theDialog.phaseT.text = "";//empty field if it is bad so we don't try anymore
         } else {
            newValue = parseFloat(theDialog.phaseT.text);
            if (newValue < -360) {
               probStr = (probStr + "Number given for Shutter Phase too low\r");
               theDialog.phaseT.text = "";//empty field if it is bad so we don't try anymore
            } else if (newValue > 360) {
               probStr = (probStr + "Number given for Shutter Phase too high\r");
               theDialog.phaseT.text = "";//empty field if it is bad so we don't try anymore
            } else {
               item.shutterPhase = newValue;
            }
         }
      }
      ///// 9- preserve fr
      if (theDialog.doPresFRCheck.value) {
         item.preserveNestedFrameRate = (theDialog.presFRCheck.value);
      }
      ///// 10- preserve rez
      if (theDialog.doPresRezCheck.value) {
         item.preserveNestedResolution = (theDialog.presRezCheck.value);
      }
   }
   app.endUndoGroup();
   if (probStr != "") {alert("The following problems were found (these settings were not changed!):\r" + probStr);}
}
function doLinkedEmpty(clickedThing, target) {
   if (clickedThing.value == false) { target.text = ""; }
}

function doLinkedEnabled(clickedThing, target) {
   target.enabled = clickedThing.value;
}
function doOppositeEnabled(clickedThing, target) {
   target.enabled = !clickedThing.value;
}