# hs.spaces.watcher

Watches for the current Space being changed
NOTE: This extension determines the number of a Space, using OS X APIs that have been deprecated since 10.8 and will likely be removed in a future release. You should not depend on Space numbers being around forever!

---

## API Overview
**Constructors** - _API calls which return an object, typically one that offers API methods_
 * [new](#new)

**Methods** - _API calls which can only be made on an object returned by a constructor_
 * [start](#start)
 * [stop](#stop)

---

## API Documentation

#### Constructors

### [new](#new)

|                                             |                                                                                     |
| --------------------------------------------|-------------------------------------------------------------------------------------|
| **Signature**                               | `hs.spaces.watcher.new(handler) -> watcher`                                                                    |
| **Type**                                    | Constructor                                                                     |
| **Description**                             | Creates a new watcher for Space change events                                                                     |
| **Parameters**                              | <ul><li>handler - A function to be called when the active Space changes. It should accept one argument, which will be the number of the new Space (or -1 if the number cannot be determined)</li></ul> |
| **Returns**                                 | <ul><li>An `hs.spaces.watcher` object</li></ul>          |
| **Notes**                                   | None |
| **Examples**                                | None |
| **Source**                                  | [extensions/spaces/libspaces_watcher.m line 69](https://github.com/CommandPost/CommandPost-App/blob/master/extensions/spaces/libspaces_watcher.m#L69) |

---

#### Methods

### [start](#start)

|                                             |                                                                                     |
| --------------------------------------------|-------------------------------------------------------------------------------------|
| **Signature**                               | `hs.spaces.watcher:start()`                                                                    |
| **Type**                                    | Method                                                                     |
| **Description**                             | Starts the Spaces watcher                                                                     |
| **Parameters**                              | <ul><li>None</li></ul> |
| **Returns**                                 | <ul><li>The watcher object</li></ul>          |
| **Notes**                                   | None |
| **Examples**                                | None |
| **Source**                                  | [extensions/spaces/libspaces_watcher.m line 95](https://github.com/CommandPost/CommandPost-App/blob/master/extensions/spaces/libspaces_watcher.m#L95) |

---

### [stop](#stop)

|                                             |                                                                                     |
| --------------------------------------------|-------------------------------------------------------------------------------------|
| **Signature**                               | `hs.spaces.watcher:stop()`                                                                    |
| **Type**                                    | Method                                                                     |
| **Description**                             | Stops the Spaces watcher                                                                     |
| **Parameters**                              | <ul><li>None</li></ul> |
| **Returns**                                 | <ul><li>The watcher object</li></ul>          |
| **Notes**                                   | None |
| **Examples**                                | None |
| **Source**                                  | [extensions/spaces/libspaces_watcher.m line 128](https://github.com/CommandPost/CommandPost-App/blob/master/extensions/spaces/libspaces_watcher.m#L128) |

---

---

<script src="https://giscus.app/client.js"
        data-repo="CommandPost/CommandPost"
        data-repo-id="MDEwOlJlcG9zaXRvcnk3NDY0NTk2NQ=="
        data-category="Website Discussion"
        data-category-id="DIC_kwDOBHMBzc4CXFFA"
        data-mapping="pathname"
        data-strict="0"
        data-reactions-enabled="1"
        data-emit-metadata="0"
        data-input-position="bottom"
        data-theme="dark"
        data-lang="en"
        crossorigin="anonymous"
        async>
</script>