Write a pop-up Power Apps component

15 minutes

Occasionally, you might be required to display a pop-up window to your application's user. The Power Apps component framework exposes a pop-up API that allows you to achieve this requirement. The following example shows how to build a pop-up window that displays a loader graphic. This method can help you achieve a satisfying user experience in long-running operations where the underlying UI is blocked from performing operations.

Note

The Popup service from the Power Apps component framework is only supported in Power Apps model-driven apps.

Initialize your component's project

To initialize your component's project, follow these steps:

Start Visual Studio Code.
Select Terminal, select New Terminal.
Change the directory to your source folder.
```
cd source
```
From your source directory, create a directory named Popup-Component.
```
md Popup-Component
```
Run the following command to switch to the new directory.
```
cd Popup-Component
```

Initialize the project by running the following command.

pac pcf init --namespace SampleNamespace --name PopupComponent --template field

Run npm install to load dependent libraries into your project.
```
npm install
```
Open the project in Visual Studio Code by running the following command.
```
code -a .
```

Implement your code component's logic

To implement your code component's logic, follow these steps:

Expand the PopupComponent folder and open the ControlManifest.Input.xml file.

Replace the entire manifest with the following XML.

<?xml version="1.0" encoding="utf-8" ?>
<manifest>
  <control namespace="SampleNamespace" constructor="PopupComponent" version="0.0.1" display-name-key="PopupComponent_Display_Key" description-key="PopupComponent_Desc_Key" control-type="standard">
    <!-- property node identifies a specific, configurable piece of data that the control expects from CDS -->
    <property name="sampleProperty" display-name-key="Property_Display_Key" description-key="Property_Desc_Key" of-type="SingleLine.Text" usage="bound" required="true" /> 
    <resources>
      <code path="index.ts" order="1"/>
      <css path="css/loader.css" order="1" />
    </resources>
  </control>
</manifest>

You add the supporting files that are found in this manifest later.

Open the Index.ts file.
Above the export class method, insert the following interface method so that you can expose other methods provided by the pop-up API (popupStyle and shadowStyle).
```
    interface Popup extends ComponentFramework.FactoryApi.Popup.Popup {
    popupStyle: object;
    shadowStyle: object;
}
```

Add the following private variable above the constructor.

private _container: HTMLDivElement;
private _popUpService: ComponentFramework.FactoryApi.Popup.PopupService;

Add the following logic to your component's init method.

this._container = document.createElement('div');
//============ content of our popup =============
let popUpContent = document.createElement('div');
popUpContent.setAttribute("class", "loader");

//============ our Popup object =============
let popUpOptions: Popup = {
    closeOnOutsideClick: true,
    content: popUpContent,
    name: 'loaderPopup', // unique popup name
    type: 1, // Root popup
    popupStyle: {
        "width": "100%",
        "height": "100%",
        "overflow": "hidden",
        "backgroundColor": "transparent",
        "display": "flex",
        "flexDirection": "column",
        "position": "absolute",
        "margin-top": 28 + "px"
    },
    shadowStyle:{
        position: "absolute",
        width: "100%",
        height: "100%"
    }
};

this._popUpService = context.factory.getPopupService();

this._popUpService.createPopup(popUpOptions);

container.appendChild(this._container);
this._popUpService.openPopup('loaderPopup');

Add styling to your code component

To add styling to your code component, follow these steps:

Create a new css subfolder under the PopupComponent folder.
Create a new loader.css file inside the CSS subfolder.

Add the following style content to the loader.css file.

.loader {
    border: 16px solid #f3f3f3; /* Light grey */
    border-top: 16px solid #3498db; /* Blue */
    border-radius: 50%;
    position: fixed;
    width: 120px;
    height: 120px;
    top:40%;
    left:50%;
    animation: spin 2s linear infinite;
  }

  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }

Select File and Save All your changes.

Build and run your component

To build and run your component, follow these steps:

Build your solution by running the following command.
```
npm run build
```
Upon a successful build, you can test your new Popup component by running npm start.
```
npm start
```
Close the test harness browser window.
Go back to the terminal and stop the watcher by pressing [CONTROL] + C.
Type Y and then press [ENTER].

Note

This loader component is bound to a text field. To use the component in a model-driven app, it might be beneficial for you to mark this field as hidden if you want to use it in a form.

To test the popup functionality, you need to publish and host the component in a Microsoft Power Platform environment. For more information on how to publish code components, see "Create a code component solution package" in the Build a Power Apps component module.

Continue

Initialize your component's project

Implement your code component's logic

Add styling to your code component

Build and run your component

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