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## Component

The Component object represents a single node of our template structure, so when you update its properties the changes are
immediately reflected on the canvas and in the code to export (indeed, when you ask to export the code we just go through all
the tree of nodes).
An example on how to update properties:

```js
component.set({
 tagName: 'span',
 attributes: { ... },
 removable: false,
});
component.get('tagName');
// -> 'span'
```

### Properties

-   `type` **[String][1]?** Component type, eg. `text`, `image`, `video`, etc.
-   `tagName` **[String][1]?** HTML tag of the component, eg. `span`. Default: `div`
-   `attributes` **[Object][2]?** Key-value object of the component's attributes, eg. `{ title: 'Hello' }` Default: `{}`
-   `name` **[String][1]?** Name of the component. Will be used, for example, in Layers and badges
-   `removable` **[Boolean][3]?** When `true` the component is removable from the canvas, default: `true`
-   `draggable` **([Boolean][3] \| [String][1])?** Indicates if it's possible to drag the component inside others.
     You can also specify a query string to indentify elements,
     eg. `'.some-class[title=Hello], [data-gjs-type=column]'` means you can drag the component only inside elements
     containing `some-class` class and `Hello` title, and `column` components. Default: `true`
-   `droppable` **([Boolean][3] \| [String][1])?** Indicates if it's possible to drop other components inside. You can use
    a query string as with `draggable`. Default: `true`
-   `badgable` **[Boolean][3]?** Set to false if you don't want to see the badge (with the name) over the component. Default: `true`
-   `stylable` **([Boolean][3] \| [Array][4]&lt;[String][1]>)?** True if it's possible to style the component.
    You can also indicate an array of CSS properties which is possible to style, eg. `['color', 'width']`, all other properties
    will be hidden from the style manager. Default: `true`
-   `stylable-require` **[Array][4]&lt;[String][1]>?** Indicate an array of style properties to show up which has been marked as `toRequire`. Default: `[]`
-   `unstylable` **[Array][4]&lt;[String][1]>?** Indicate an array of style properties which should be hidden from the style manager. Default: `[]`
-   `style-signature` **[Array][4]&lt;[String][1]>?** This option comes handy when you need to remove or export strictly component-specific rules. Be default, if this option is not empty, the editor will remove rules when there are no components, of that type, in the canvas. Eg. '\['.navbar', '[navbar-']'. Default: `''`
-   `highlightable` **[Boolean][3]?** It can be highlighted with 'dotted' borders if true. Default: `true`
-   `copyable` **[Boolean][3]?** True if it's possible to clone the component. Default: `true`
-   `resizable` **[Boolean][3]?** Indicates if it's possible to resize the component. It's also possible to pass an object as [options for the Resizer][5]. Default: `false`
-   `editable` **[Boolean][3]?** Allow to edit the content of the component (used on Text components). Default: `false`
-   `layerable` **[Boolean][3]?** Set to `false` if you need to hide the component inside Layers. Default: `true`
-   `selectable` **[Boolean][3]?** Allow component to be selected when clicked. Default: `true`
-   `hoverable` **[Boolean][3]?** Shows a highlight outline when hovering on the element if `true`. Default: `true`
-   `void` **[Boolean][3]?** This property is used by the HTML exporter as void elements don't have closing tags, eg. `<br/>`, `<hr/>`, etc. Default: `false`
-   `content` **[String][1]?** Content of the component (not escaped) which will be appended before children rendering. Default: `''`
-   `icon` **[String][1]?** Component's icon, this string will be inserted before the name (in Layers and badge), eg. it can be an HTML string '<i class="fa fa-square-o"></i>'. Default: `''`
-   `script` **([String][1] \| [Function][6])?** Component's javascript. More about it [here][7]. Default: `''`
-   `script-export` **([String][1] \| [Function][6])?** You can specify javascript available only in export functions (eg. when you get the HTML).
    If this property is defined it will overwrite the `script` one (in export functions). Default: `''`
-   `traits` **[Array][4]&lt;([Object][2] \| [String][1])>?** Component's traits. More about it [here][8]. Default: `['id', 'title']`
-   `propagate` **[Array][4]&lt;[String][1]>?** Indicates an array of properties which will be inhereted by all NEW appended children.
     For example if you create a component likes this: `{ removable: false, draggable: false, propagate: ['removable', 'draggable'] }`
     and append some new component inside, the new added component will get the exact same properties indicated in the `propagate` array (and the `propagate` property itself). Default: `[]`
-   `toolbar` **[Array][4]&lt;[Object][2]>?** Set an array of items to show up inside the toolbar when the component is selected (move, clone, delete).
    Eg. `toolbar: [ { attributes: {class: 'fa fa-arrows'}, command: 'tlb-move' }, ... ]`.
    By default, when `toolbar` property is falsy the editor will add automatically commands like `move`, `delete`, etc. based on its properties.
-   `components` **Collection&lt;[Component][9]>?** Children components. Default: `null`

## init

Hook method, called once the model is created

## updated

Hook method, called when the model has been updated (eg. updated some model's property)

### Parameters

-   `property` **[String][1]** Property name, if triggered after some property update
-   `value` **any** Property value, if triggered after some property update
-   `previous` **any** Property previous value, if triggered after some property update

## removed

Hook method, called once the model has been removed

## is

Check component's type

### Parameters

-   `type` **[string][1]** Component type

### Examples

```javascript
component.is('image')
// -> false
```

Returns **[Boolean][3]** 

## props

Return all the propeties

Returns **[Object][2]** 

## index

Get the index of the component in the parent collection.

Returns **[Number][10]** 

## setDragMode

Change the drag mode of the component.
To get more about this feature read: [https://github.com/artf/grapesjs/issues/1936][11]

### Parameters

-   `value` **[String][1]** Drag mode, options: 'absolute' | 'translate'

Returns **this** 

## find

Find inner components by query string.
**ATTENTION**: this method works only with already rendered component

### Parameters

-   `query` **[String][1]** Query string

### Examples

```javascript
component.find('div > .class');
// -> [Component, Component, ...]
```

Returns **[Array][4]** Array of components

## findType

Find all inner components by component type.
The advantage of this method over `find` is that you can use it
also before rendering the component

### Parameters

-   `type` **[String][1]** Component type

### Examples

```javascript
const allImages = component.findType('image');
console.log(allImages[0]) // prints the first found component
```

Returns **[Array][4]&lt;[Component][9]>** 

## closest

Find the closest parent component by query string.
**ATTENTION**: this method works only with already rendered component

### Parameters

-   `query` **[string][1]** Query string

### Examples

```javascript
component.closest('div.some-class');
// -> Component
```

Returns **[Component][9]** 

## closestType

Find the closest parent component by its type.
The advantage of this method over `closest` is that you can use it
also before rendering the component

### Parameters

-   `type` **[String][1]** Component type

### Examples

```javascript
const Section = component.closestType('section');
console.log(Section);
```

Returns **[Component][9]** Found component, otherwise `undefined`

## contains

The method returns a Boolean value indicating whether the passed
component is a descendant of a given component

### Parameters

-   `component` **[Component][9]** Component to check

Returns **[Boolean][3]** 

## replaceWith

Replace a component with another one

### Parameters

-   `el` **([String][1] \| [Component][9])** Component or HTML string

### Examples

```javascript
component.replaceWith('<div>Some new content</div>');
// -> Component
```

Returns **([Component][9] \| [Array][4]&lt;[Component][9]>)** New added component/s

## setAttributes

Update attributes of the component

### Parameters

-   `attrs` **[Object][2]** Key value attributes
-   `opts`   (optional, default `{}`)
-   `options` **[Object][2]** Options for the model update

### Examples

```javascript
component.setAttributes({ id: 'test', 'data-key': 'value' });
```

Returns **this** 

## addAttributes

Add attributes to the component

### Parameters

-   `attrs` **[Object][2]** Key value attributes
-   `opts`   (optional, default `{}`)
-   `options` **[Object][2]** Options for the model update

### Examples

```javascript
component.addAttributes({ 'data-key': 'value' });
```

Returns **this** 

## removeAttributes

Remove attributes from the component

### Parameters

-   `attrs` **([String][1] \| [Array][4]&lt;[String][1]>)** Array of attributes to remove (optional, default `[]`)
-   `opts`   (optional, default `{}`)
-   `options` **[Object][2]** Options for the model update

### Examples

```javascript
component.removeAttributes('some-attr');
component.removeAttributes(['some-attr1', 'some-attr2']);
```

Returns **this** 

## getStyle

Get the style of the component

Returns **[Object][2]** 

## setStyle

Set the style on the component

### Parameters

-   `prop` **[Object][2]** Key value style object (optional, default `{}`)
-   `opts`   (optional, default `{}`)

### Examples

```javascript
component.setStyle({ color: 'red' });
```

Returns **[Object][2]** 

## getAttributes

Return all component's attributes

### Parameters

-   `opts`   (optional, default `{}`)

Returns **[Object][2]** 

## addClass

Add classes

### Parameters

-   `classes` **([Array][4]&lt;[String][1]> | [String][1])** Array or string of classes

### Examples

```javascript
model.addClass('class1');
model.addClass('class1 class2');
model.addClass(['class1', 'class2']);
// -> [SelectorObject, ...]
```

Returns **[Array][4]** Array of added selectors

## setClass

Set classes (resets current collection)

### Parameters

-   `classes` **([Array][4]&lt;[String][1]> | [String][1])** Array or string of classes

### Examples

```javascript
model.setClass('class1');
model.setClass('class1 class2');
model.setClass(['class1', 'class2']);
// -> [SelectorObject, ...]
```

Returns **[Array][4]** Array of added selectors

## removeClass

Remove classes

### Parameters

-   `classes` **([Array][4]&lt;[String][1]> | [String][1])** Array or string of classes

### Examples

```javascript
model.removeClass('class1');
model.removeClass('class1 class2');
model.removeClass(['class1', 'class2']);
// -> [SelectorObject, ...]
```

Returns **[Array][4]** Array of removed selectors

## getClasses

Returns component's classes as an array of strings

Returns **[Array][4]** 

## append

Add new component children

### Parameters

-   `components` **([Component][9] \| [String][1])** Component to add
-   `opts` **[Object][2]** Options for the append action (optional, default `{}`)

### Examples

```javascript
someComponent.get('components').length // -> 0
const videoComponent = someComponent.append('<video></video><div></div>')[0];
// This will add 2 components (`video` and `div`) to your `someComponent`
someComponent.get('components').length // -> 2
// You can pass components directly
otherComponent.append(otherComponent2);
otherComponent.append([otherComponent3, otherComponent4]);
// append at specific index (eg. at the beginning)
someComponent.append(otherComponent, { at: 0 });
```

Returns **[Array][4]** Array of appended components

## components

Set new collection if `components` are provided, otherwise the
current collection is returned

### Parameters

-   `components` **([Component][9] \| [String][1])?** Components to set
-   `opts` **[Object][2]** Options, same as in `Component.append()` (optional, default `{}`)

### Examples

```javascript
// Set new collection
component.components('<span></span><div></div>');
// Get current collection
const collection = component.components();
console.log(collection.length);
// -> 2
```

Returns **(Collection | [Array][4]&lt;[Component][9]>)** 

## empty

Remove all inner components

-   @return {this}

### Parameters

-   `opts`   (optional, default `{}`)

## parent

Get the parent component, if exists

### Parameters

-   `opts`   (optional, default `{}`)

### Examples

```javascript
component.parent();
// -> Component
```

Returns **[Component][9]** 

## getTrait

Get the trait by id/name

### Parameters

-   `id` **[String][1]** The `id` or `name` of the trait

### Examples

```javascript
const traitTitle = component.getTrait('title');
traitTitle && traitTitle.set('label', 'New label');
```

Returns **Trait** Trait model

## updateTrait

Update a trait

### Parameters

-   `id` **[String][1]** The `id` or `name` of the trait
-   `props` **[Object][2]** Object with the props to update

### Examples

```javascript
component.updateTrait('title', {
 type: 'select',
 options: [ 'Option 1', 'Option 2' ],
});
```

Returns **this** 

## getTraitIndex

Get the trait position index by id/name. Useful in case you want to
replace some trait, at runtime, with something else.

### Parameters

-   `id` **[String][1]** The `id` or `name` of the trait

### Examples

```javascript
const traitTitle = component.getTraitIndex('title');
console.log(traitTitle); // 1
```

Returns **[Number][10]** Index position of the current trait

## removeTrait

Remove trait/s by id/s.

### Parameters

-   `id` **([String][1] \| [Array][4]&lt;[String][1]>)** The `id`/`name` of the trait (or an array)

### Examples

```javascript
component.removeTrait('title');
component.removeTrait(['title', 'id']);
```

Returns **[Array][4]** Array of removed traits

## addTrait

Add trait/s by id/s.

### Parameters

-   `trait` **([String][1] \| [Object][2] \| [Array][4]&lt;([String][1] \| [Object][2])>)** Trait to add (or an array of traits)
-   `opts` **Options** Options for the add (optional, default `{}`)

### Examples

```javascript
component.addTrait('title', { at: 1 }); // Add title trait (`at` option is the position index)
component.addTrait({
 type: 'checkbox',
 name: 'disabled',
});
component.addTrait(['title', {...}, ...]);
```

Returns **[Array][4]** Array of added traits

## getName

Get the name of the component

Returns **[String][1]** 

## getIcon

Get the icon string

Returns **[String][1]** 

## toHTML

Return HTML string of the component

### Parameters

-   `opts` **[Object][2]** Options (optional, default `{}`)
    -   `opts.tag` **[String][1]?** Custom tagName
    -   `opts.attributes` **([Object][2] \| [Function][6])** You can pass an object of custom attributes to replace
        with the current one or you can even pass a function to generate attributes dynamically (optional, default `null`)

### Examples

```javascript
// Simple HTML return
component.set({ tagName: 'span' });
component.setAttributes({ title: 'Hello' });
component.toHTML();
// -> <span title="Hello"></span>

// Custom attributes
component.toHTML({ attributes: { 'data-test': 'Hello' } });
// -> <span data-test="Hello"></span>

// Custom dynamic attributes
component.toHTML({
 attributes(component, attributes) {
   if (component.get('tagName') == 'span') {
     attributes.title = 'Custom attribute';
   }
   return attributes;
 },
});
// -> <span title="Custom attribute"></span>
```

Returns **[String][1]** HTML string

## getChangedProps

Return an object containing only changed props

### Parameters

-   `res`  

## getId

Return the component id

Returns **[String][1]** 

## setId

Set new id on the component

### Parameters

-   `id` **[String][1]** 
-   `opts`  

Returns **this** 

## getEl

Get the DOM element of the component.
This works only if the component is already rendered

### Parameters

-   `frame` **Frame** Specific frame from which taking the element

Returns **[HTMLElement][12]** 

## getView

Get the View of the component.
This works only if the component is already rendered

### Parameters

-   `frame` **Frame** Get View of a specific frame

Returns **ComponentView** 

## onAll

Execute callback function on itself and all inner components

### Parameters

-   `clb` **[Function][6]** Callback function, the model is passed as an argument

### Examples

```javascript
component.onAll(component => {
 // do something with component
})
```

Returns **this** 

## remove

Remove the component

### Parameters

-   `opts`   (optional, default `{}`)

Returns **this** 

## move

Move the component to another destination component

### Parameters

-   `component` **[Component][9]** Destination component (so the current one will be appended as a child)
-   `opts` **[Object][2]** Options for the append action (optional, default `{}`)

### Examples

```javascript
// Move the selected component on top of the wrapper
const dest = editor.getWrapper();
editor.getSelected().move(dest, { at: 0 });
```

Returns **this** 

## getList

The list of components is taken from the Components module.
Initially, the list, was set statically on the Component object but it was
not ok, as it was shared between multiple editor instances

### Parameters

-   `model`  

## checkId

This method checks, for each parsed component and style object
(are not Components/CSSRules yet), for duplicated id and fixes them
This method is used in Components.js just after the parsing

### Parameters

-   `components`  
-   `styles`   (optional, default `[]`)
-   `list`   (optional, default `{}`)
-   `opts`   (optional, default `{}`)

[1]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String

[2]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object

[3]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean

[4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array

[5]: https://github.com/artf/grapesjs/blob/master/src/utils/Resizer.js

[6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/function

[7]: /modules/Components-js.html

[8]: /modules/Traits.html

[9]: #component

[10]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number

[11]: https://github.com/artf/grapesjs/issues/1936

[12]: https://developer.mozilla.org/docs/Web/HTML/Element
