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Question by Nothke · Nov 20, 2013 at 09:00 AM · guitoolbarselectiongrid

Add a button to toolbar/selection grid?

I am trying to make a "tab" view similar to the one in the internet browsers where you have a tab line and a "+" button to make a new button (and well, "-" to remove it), so I am trying to make a GUI.toolbar and add buttons.. But I am just confused how to do it..

toolbar and selection grids require Arrays, but it is hard to add elements to array, no? (at least I couldn't find how to do it in C#), and when I found it they said "use lists!" but toolbar/selection grid doesn't support lists.. So, how can I do it??

Also if you know a simpler way to do a tabbed menu (or an example of it) than this, it would be helpful

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avatar image Professor Snake · Nov 20, 2013 at 09:54 AM 0
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I use these functions to add/remove items from small arrays. Change Vector2 to whatever type your variables are.

 function IncreaseArray(shoe:Vector2[]):Vector2[]{
     if(shoe.length==0){
         return new Vector2[1];
     }
     var shoeRes:Vector2[]=new Vector2[shoe.length+1];
     for(var i:int=0;i<shoe.length;i++)
         shoeRes[i]=shoe[i];
     return shoeRes;
 } //use with myArray=IncreaseArray(myArray);

 function RemoveFromArray(vec:Vector2[],shoe:Vector2):Vector2[]{
     var faf:Vector2[]=new Vector2[0];
     for(var i:int=0;i<vec.length;i++){
         if(vec[i]!=shoe){
             faf=IncreaseArray(faf);
             faf[faf.length-1]=vec[i];
         }
     }
     return faf;
 }// Use with myArray=RemoveFromArray(myArray,myValue);

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Answer by TinkerinThinker · Dec 13, 2013 at 08:49 PM

You can simply use lists and call their ToArray() method upon passing it to GUI.Toolbar.

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class TabbedGUI : MonoBehaviour {
     private int currentTab = 0;
     private List<string> tabs = new List<string>();
     
     public void AddTab(string title) {
         tabs.Add(title);
     }
     
     public void RemoveTab(string title) {
         tabs.Remove(title);
     }
     
     void OnGUI() {
         // Notice the List<string>.ToArray() call.
         currentTab = GUI.Toolbar(new Rect(0, 0, 50, Screen.width), currentTab, tabs.ToArray());
     }
 }

Keep in mind that this code doesn't check for duplicate tab titles. In that case the RemoveTab method may remove the wrong tab from the list!

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