Move widgets out of builtins/ and into its own section under the language reference

docs/reference/src/language/widgets/textedit.md

@@ -0,0 +1,45 @@
+## `TextEdit`
+
+Similar to [`LineEdit`](#lineedit)`, but can be used to enter several lines of text
+
+_Note:_ The current implementation only implement very few basic shortcut. More
+shortcut will be implemented in a future version: <https://github.com/slint-ui/slint/issues/474>
+
+### Properties
+
+-   **`font-size`** (_in_ _length_): the size of the font of the input text
+-   **`text`** (_in-out_ _string_): The text being edited
+-   **`has-focus`**: (_in_out_ _bool_): Set to true when the widget currently has the focus
+-   **`enabled`**: (_in_ _bool_): Defaults to true. When false, nothing can be entered
+-   **`read-only`** (_in_ _bool_): When set to true, text editing via keyboard and mouse is disabled but selecting text is still enabled as well as editing text programmatically (default value: `false`)
+-   **`wrap`** (_in_ _enum [`TextWrap`](../builtins/enums.md#textwrap)_): The way the text wraps (default: word-wrap).
+-   **`horizontal-alignment`** (_in_ _enum [`TextHorizontalAlignment`](../builtins/enums.md#texthorizontalalignment)_): The horizontal alignment of the text.
+
+### Functions
+
+-   **`focus()`** Call this function to focus the TextEdit and make it receive future keyboard events.
+-   **`select-all()`** Selects all text.
+-   **`clear-selection()`** Clears the selection.
+-   **`copy()`** Copies the selected text to the clipboard.
+-   **`cut()`** Copies the selected text to the clipboard and removes it from the editable area.
+-   **`paste()`** Pastes the text content of the clipboard at the cursor position.
+
+### Callbacks
+
+-   **`edited(`_`string`_`)`**: Emitted when the text has changed because the user modified it
+
+### Example
+
+```slint
+import { TextEdit } from "std-widgets.slint";
+export component Example inherits Window {
+    width: 200px;
+    height: 200px;
+    TextEdit {
+        font-size: 14px;
+        width: parent.width;
+        height: parent.height;
+        text: "Lorem ipsum dolor sit amet,\n consectetur adipisici elit";
+    }
+}
+```