# MembersListPreview

## Introduction

**`Members List Preview`** widget simply displays a list of members. It can be used to display members that were selected by the user in the [Members List Selector](https://developer.supervisely.com/app-development/apps-with-gui/members-list-selector) widget for example.

## Function signature

```python
members_list_preview = MembersListPreview(
    users=members,
    max_width=300,
    empty_text=None,
    widget_id=None,
)
```

![default](https://github.com/supervisely-ecosystem/ui-widgets-demos/assets/48913536/d674558e-739d-4dd1-be66-a48f8f00adff)

## Parameters

|  Parameters  |       Type       |                           Description                           |
| :----------: | :--------------: | :-------------------------------------------------------------: |
|    `users`   | `List[UserInfo]` |                  Supervisely `UserInfo` objects                 |
|  `max_width` |       `int`      |                     Max width of the widget                     |
| `empty_text` |       `str`      | Text that will be displayed when there are no members in widget |
|  `widget_id` |       `str`      |                         ID of the widget                        |

### users

List of `UserInfo` objects.

**type:** `List[UserInfo]`

```python
members_list_preview = MembersListPreview(
    users=members
)
```

### max\_width

Set the maximum width of the widget in pixels.

**type:** `int`

**default** `300`

```python
members_list_preview = MembersListPreview(
    users=members,
    max_width=150
)
```

### empty\_text

Text that will be displayed when there are no members in the widget.

**type:** `str`

**default** `None`

```python
empty_text = "No members selected"
members_list_preview = MembersListPreview(
    users=members,
    empty_text=empty_text
)
```

![empty-text](https://github.com/supervisely-ecosystem/ui-widgets-demos/assets/48913536/45c8ab27-9466-4764-9796-d94f0c3b4fc2)

### widget\_id

ID of the widget.

**type:** `str`

**default value:** `None`

### Methods and attributes

| Attributes and Methods | Description              |
| :--------------------: | ------------------------ |
|         `set()`        | Set users to the widget. |

## Mini App Example

In this example we will create a mini app with `MembersListPreview` widget. We will create a `MembersListSelector` widget and display selected members with `MembersListPreview` widget.

You can find this example in our Github repository:

[supervisely-ecosystem/ui-widgets-demos/media/019\_members\_list\_preview/src/main.py](https://github.com/supervisely-ecosystem/ui-widgets-demos/blob/master/media/019_members_list_preview/src/main.py)

### Import libraries

```python
import os
import supervisely as sly
from supervisely.app.widgets import (
    Card,
    Container,
    MembersListPreview,
    MembersListSelector,
    Text,
)
from dotenv import load_dotenv
```

### Init API client

First, we load environment variables with credentials and init API for communicating with Supervisely Instance:

```python
load_dotenv("local.env")
load_dotenv(os.path.expanduser("~/supervisely.env"))

api = sly.Api()
```

### Define team ID

```python
team_id = 8  # Change this to your team ID
# team_id = sly.env.team_id() # Uncomment this line to use the team ID from the local.env file
```

### Get Team members and initialize `MembersListSelector` widget

```python
members = api.user.get_team_members(team_id)
members_list_selector = MembersListSelector(members, multiple=True)
```

### Initialize `MembersListPreview` widget and `Text` widget for displaying number of selected members

```python
empty_text = Text("No members selected", "text")
members_list_preview = MembersListPreview(empty_text=empty_text)
preview_text = Text(f"Selected Members: 0 / {len(members)}", "text")
preview_container = Container([preview_text, members_list_preview])
```

### Create app layout

Prepare a layout for app using `Card` widget with the `content` parameter and place widgets that we've previously created into the `Container` widget.

```python
container = Container(widgets=[members_list_selector, preview_container])

card = Card(
    title="Members List Preview",
    content=container,
)

layout = card
```

### Create app using layout

Create an app object with layout parameter.

```python
app = sly.Application(layout=layout)
```

### Add functions to control widgets from python code

```python
@members_list_selector.selection_changed
def on_selection_changed(selected_members):
    preview_text.set(f"Selected Members: {len(selected_members)} / {len(members)}", "text")
    members_list_preview.set(selected_members)
```

![mini-app-min](https://github.com/supervisely-ecosystem/ui-widgets-demos/assets/48913536/4368d2f1-1cd6-4d74-bcf2-5641ec4e00bb)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developer.supervisely.com/app-development/widgets/media/memberslistpreview.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.