/*
ProjectItemsRenamer.jsx
version 1.3
(1.2 corrects unemptied variables, causing past renaming to be added to current operation)
(1.3 fixes evil while block with endless loop in some situations)
(1.4 fixes even more evil while block with endless loop. Sorry about that.)
(by the guy who runs crgreen.com)
*/
var win = new Window('palette', 'Rename Project Items',[300,100,645,362]);
var w = buildUI();
if (w != null) {
    w.show();
}

function buildUI() {
    if (win != null) {
        win.nameSearchLabel = win.add('statictext', [14,15,314,37], 'Search in Names:');
        win.nameSearchT = win.add('edittext', [25,40,325,62], '');
        win.nameReplaceLabel = win.add('statictext', [14,73,314,95], 'Replace with:');
        win.nameReplaceT = win.add('edittext', [25,98,325,120], '');
        win.typePnl = win.add('panel', [16,138,206,243], 'Rename Type:');
        
        win.repRad = win.typePnl.add('radiobutton', [14,13,174,35], 'Search and Replace');
        win.repRad.value = true;
        win.repRad.onClick = function () {
            doTextChange(win.nameSearchLabel, 'Search in Names:');
            doTextChange(win.nameReplaceLabel, 'Replace with:');
        };
        win.appRad = win.typePnl.add('radiobutton', [14,39,174,61], 'Append');
        win.appRad.onClick = function () {
            doTextChange(win.nameSearchLabel, 'Append Head with:');
            doTextChange(win.nameReplaceLabel, 'Append Tail with:');
        };
        win.remRad = win.typePnl.add('radiobutton', [14,65,174,87], 'Remove # of Characters');
        win.remRad.onClick = function () {
            doTextChange(win.nameSearchLabel, 'Remove this many chars from head (number):');
            doTextChange(win.nameReplaceLabel, 'Remove this many chars from tail (number):');
        };
        win.okBtn = win.add('button', [240,220,320,242], 'OK', {name:'OK'});
        win.okBtn.onClick = function () { doRenaming(this.parent); };
        
        win.cancBtn = win.add('button', [240,185,320,207], 'Close', {name:'Cancel'});
        win.cancBtn.onClick = function () {this.parent.close(1)};
    }
    return win
}

function doTextChange(target, newText) {
    target.text = newText;
}

function doRenaming(theDialog) {
    // make sure comps are selected
    var everyItem = app.project.items;
    selectedObs = new Array();
    for (var i = everyItem.length; i >= 1; i--) {
        eyeTem = everyItem[i];
        if (eyeTem.selected) {
            selectedObs[selectedObs.length] = eyeTem;
        }
    }
    
    if ( selectedObs.length == 0 ) {
        alert("No Project Items selected.");
    } else {
        var s = selectedObs;
        var selNum = s.length;
        
        app.beginUndoGroup("the renaming of project items");
        var inputError = false;
        
        for (var n = (selNum-1); n >= 0; n--) {
            if ( ! inputError ) {
                item = s[n];
                oldName = item.name;
                sear = theDialog.nameSearchT.text;
                repl = theDialog.nameReplaceT.text
                newName = oldName;
                
                if (theDialog.repRad.value) {
                    //keep renaming until searchstring is no longer in name:
                    stopFlag = false;
                    while (! stopFlag) {
                        newName = (newName.replace(sear, repl));
                        if (newName.indexOf(sear) == -1) {stopFlag = true;}
                        //names should not be over 31 chars long, so we trim if we need to
                    }
                    newName=(newName.substr(0,31));
                } else if (theDialog.appRad.value) {
                    newName=(sear + oldName + repl );
                } else if (theDialog.remRad.value) {
                    if (sear == "") {sear = 0;}
                    if (repl == "") {repl = 0;}
                    sear = ( parseInt(sear) );
                    repl = ( parseInt(repl) );
                    if ( (isNaN(sear)) || (isNaN(repl)) ) {
                        alert('Error: Not a number?');
                        inputError = true;
                    } else {
                        newName=(newName.substr( sear, oldName.length-repl ));
                    }
                }
                //////////////////////
                try {
                    item.name = newName;
                } catch (error ) {
                    // just ignore errors; if it can't be named, what the hay
                }
                sear="";
                repl="";
                //////////////////////
            }
        }
        app.endUndoGroup();
    }
}