Version: 2021.3+
This example demonstrates how to use UnityEditor.PopupWindow
to create a pop-up window.
This example creates a pop-up window that’s displayed through a button in a custom Editor window. The pop-up window has three toggles and closes when it isn’t in focus.
You can find the completed files that this example creates in this GitHub repository.
This guide is for developers familiar with the Unity Editor, UI(User Interface) Allows a user to interact with your application. Unity currently supports three UI systems. More info
See in Glossary Toolkit, and C# scripting. Before you start, get familiar with the following:
Create a custom Editor window with a button. Define the button in a UI Document (UXML file) and style it in a USS file. Finally, define the button logic in a C# script so that when you click the button, the pop-up window displays.
Create a Unity project with any template.
Right-click in the Project window, and then select Create > UI Toolkit > Editor Window.
In the C# box of the UI Toolkit Editor Window Creator window, enter PopupExample
.
Select Confirm. This creates three files: PopupExample.cs
, PopupExample.uxml
, and PopupExample.uss
.
Replace PopupExample.uxml
with the following content:
<ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" xsi="http://www.w3.org/2001/XMLSchema-instance" engine="UnityEngine.UIElements" editor="UnityEditor.UIElements" noNamespaceSchemaLocation="../../UIElementsSchema/UIElements.xsd" editor-extension-mode="True">
<Style src="PopupExample.uss" />
<ui:Button text="Popup Options" display-tooltip-when-elided="true" class="popup-button" />
</ui:UXML>
Replace PopupExample.cs
with the following content:
using UnityEditor;
using UnityEngine.UIElements;
using PopupWindow = UnityEditor.PopupWindow;
public class PopupExample : EditorWindow
{
// Add menu item
[MenuItem("Example/Popup Example")]
static void Init()
{
EditorWindow window = EditorWindow.CreateInstance<PopupExample>();
window.Show();
}
private void CreateGUI()
{
var visualTreeAsset = AssetDatabase.LoadAssetAtPath<VisualTreeAsset>("Assets/Editor/PopupExample.uxml");
visualTreeAsset.CloneTree(rootVisualElement);
var button = rootVisualElement.Q<Button>();
button.clicked += () => PopupWindow.Show(button.worldBound, new PopupContentExample());
}
}
Replace PopupExample.uss
with the following content:
.popup-button {
width: 200px;
}
Create a UI Document (UXML file) to define the content in the pop-up window. Create a C# class to set the window size and to display the window.
In the Editor
folder, create a UI Document named PopupWindowContent.uxml
with the following content:
<ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" xsi="http://www.w3.org/2001/XMLSchema-instance" engine="UnityEngine.UIElements" editor="UnityEditor.UIElements" noNamespaceSchemaLocation="../../../UIElementsSchema/UIElements.xsd" editor-extension-mode="True">
<ui:Toggle label="Toggle 1" name="Toggle1"/>
<ui:Toggle label="Toggle 2" />
<ui:Toggle label="Toggle 3" />
</ui:UXML>
In the Editor
folder, create a C# file named PopupContentExample.cs
with the following content:
using UnityEditor;
using UnityEngine;
using UnityEngine.UIElements;
public class PopupContentExample : PopupWindowContent
{
//Set the window size
public override Vector2 GetWindowSize()
{
return new Vector2(200, 100);
}
public override void OnGUI(Rect rect)
{
// Intentionally left empty
}
public override void OnOpen()
{
Debug.Log("Popup opened: " + this);
var visualTreeAsset = AssetDatabase.LoadAssetAtPath<VisualTreeAsset>("Assets/Editor/PopupWindowContent.uxml");
visualTreeAsset.CloneTree(editorWindow.rootVisualElement);
}
public override void OnClose()
{
Debug.Log("Popup closed: " + this);
}
}
To test the popup window, from the menu, select Example > Popup Example > Popup Options.
When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalized web experience. Because we respect your right to privacy, you can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer.
More information
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising. Some 3rd party video providers do not allow video views without targeting cookies. If you are experiencing difficulty viewing a video, you will need to set your cookie preferences for targeting to yes if you wish to view videos from these providers. Unity does not control this.
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.