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137 lines
14 KiB
Markdown
137 lines
14 KiB
Markdown
---
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lang: en-US
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type: component
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---
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# Drawer
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Sometimes, `Dialog` does not always satisfy our requirements, let's say you have a massive form, or you need space to display something like `terms & conditions`, `Drawer` has almost identical API with `Dialog`, but it introduces different user experience.
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:::tip
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Since v-model is natively supported for all components, `visible.sync` has been deprecated, use `v-model="visibilityBinding"` to control the visibility of the current drawer.
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:::
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<style lang="scss" scoped>
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.example-showcase {
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&__content {
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display: flex;
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flex-direction: column;
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height: 100%;
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form {
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flex: 1;
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}
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}
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&__footer {
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display: flex;
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button {
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flex: 1;
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}
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}
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}
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.el-drawer__body {
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padding: 20px;
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}
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</style>
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## Basic Usage
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Callout a temporary drawer, from multiple direction
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:::demo You must set `model-value` for `Drawer` like `Dialog` does to control the visibility of `Drawer` itself, it's `boolean` type. `Drawer` has to parts: `title` & `body`, the `title` is a named slot, you can also set the title through attribute named `title`, default to an empty string, the `body` part is the main area of `Drawer`, which contains user defined content. When opening, `Drawer` expand itself from the **right corner to left** which size is **30%** of the browser window by default. You can change that default behavior by setting `direction` and `size` attribute. This show case also demonstrated how to use the `before-close` API, check the Attribute section for more detail
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drawer/basic-usage
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:::
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## No Title
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When you no longer need a title, you can remove title from drawer.
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:::demo Set the `withHeader` attribute to **false**, you can remove the title from drawer, thus your drawer can have more space on screen. If you want to be accessible, make sure to set the `title` attribute.
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drawer/no-title
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:::
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## Customization Content
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Like `Dialog`, `Drawer` can do many diverse interaction as you wanted.
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:::demo
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drawer/customization-content
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:::
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## Nested Drawer
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You can also have multiple layer of `Drawer` just like `Dialog`.
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:::demo If you need multiple Drawer in different layer, you must set the `append-to-body` attribute to **true**
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drawer/nested-drawer
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:::
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:::tip
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The content inside Drawer should be lazy rendered, which means that the content inside Drawer will not impact the initial render performance, therefore any DOM operation should be performed through `ref` or after `open` event emitted.
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:::
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:::tip
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Drawer provides an API called `destroyOnClose`, which is a flag variable that indicates should destroy the children content inside Drawer after Drawer was closed. You can use this API when you need your `mounted` life cycle to be called every time the Drawer opens.
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:::
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## Drawer Attributes
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| Attribute | Description | Type | Acceptable Values | Default |
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| --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------- | ------- |
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| model-value / v-model | Should Drawer be displayed | boolean | — | false |
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| append-to-body | Controls should Drawer be inserted to DocumentBody Element, nested Drawer must assign this param to **true** | boolean | — | false |
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| lock-scroll | whether scroll of body is disabled while Drawer is displayed | boolean | — | true |
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| before-close | If set, closing procedure will be halted | function(done) (done is function type that accepts a boolean as parameter, calling done with true or without parameter will abort the close procedure) | — | — |
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| close-on-click-modal | whether the Drawer can be closed by clicking the mask | boolean | — | true |
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| close-on-press-escape | Indicates whether Drawer can be closed by pressing ESC | boolean | — | true |
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| open-delay | Time(milliseconds) before open | number | — | 0 |
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| close-delay | Time(milliseconds) before close | number | — | 0 |
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| custom-class | Extra class names for Drawer | string | — | — |
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| destroy-on-close | Indicates whether children should be destroyed after Drawer closed | boolean | - | false |
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| modal | Should show shadowing layer | boolean | — | true |
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| direction | Drawer's opening direction | Direction | rtl / ltr / ttb / btt | rtl |
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| show-close | Should show close button at the top right of Drawer | boolean | — | true |
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| size | Drawer's size, if Drawer is horizontal mode, it effects the width property, otherwise it effects the height property, when size is `number` type, it describes the size by unit of pixels; when size is `string` type, it should be used with `x%` notation, other wise it will be interpreted to pixel unit | number / string | - | '30%' |
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| title | Drawer's title, can also be set by named slot, detailed descriptions can be found in the slot form | string | — | — |
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| withHeader | Flag that controls the header section's existance, default to true, when withHeader set to false, both `title attribute` and `title slot` won't work | boolean | - | true |
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| modal-class | Extra class names for shadowing layer | string | - | - |
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| z-index | set z-index | number | - | - |
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## Drawer Slots
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| Name | Description |
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| ----- | -------------------- |
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| — | Drawer's Content |
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| title | Drawer Title Section |
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## Drawer Methods
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| Name | Description |
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| ----------- | --------------------------------------------------------------- |
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| handleClose | In order to close Drawer, this method will call `before-close`. |
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## Drawer Events
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| Event Name | Description | Parameter |
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| ---------- | ------------------------------------------------ | --------- |
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| open | Triggered before Drawer opening animation begins | — |
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| opened | Triggered after Drawer opening animation ended | — |
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| close | Triggered before Drawer closing animation begins | — |
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| closed | Triggered after Drawer closing animation ended | — |
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