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123 lines
5.0 KiB
123 lines
5.0 KiB
---
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category: Components
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type: Layout
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cols: 1
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title: Layout
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cover: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*4i58ToAcxaYAAAAAAAAAAAAADrJ8AQ/original
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coverDark: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*HdS6Q5vUCDcAAAAAAAAAAAAADrJ8AQ/original
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---
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Handling the overall layout of a page.
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## Specification
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### Size
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The first level navigation is inclined left near a logo, and the secondary menu is inclined right.
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- Top Navigation (almost systems): the height of the first level navigation `64px`, the second level navigation `48px`.
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- Top Navigation(contents page): the height of the first level navigation `80px`, the second level navigation `56px`.
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- Calculation formula of a top navigation: `48+8n`.
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- Calculation formula of an aside navigation: `200+8n`.
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### Interaction rules
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- The first level navigation and the last level navigation should be distinguishable by visualization;
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- The current item should have the highest priority of visualization;
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- When the current navigation item is collapsed, the style of the current navigation item is applied to its parent level;
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- The left side navigation bar has support for both the accordion and expanding styles; you can choose the one that fits your case the best.
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## Visualization rules
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Style of a navigation should conform to its level.
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- **Emphasis by colorblock**
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When background color is a deep color, you can use this pattern for the parent level navigation item of the current page.
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- **The highlight match stick**
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When background color is a light color, you can use this pattern for the current page navigation item; we recommend using it for the last item of the navigation path.
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- **Highlighted font**
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From the visualization aspect, a highlighted font is stronger than colorblock; this pattern is often used for the parent level of the current item.
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- **Enlarge the size of the font**
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`12px`, `14px` is a standard font size of navigations, `14px` is used for the first and the second level of the navigation. You can choose an appropriate font size regarding the level of your navigation.
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## Component Overview
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- `Layout`: The layout wrapper, in which `Header` `Sider` `Content` `Footer` or `Layout` itself can be nested, and can be placed in any parent container.
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- `Header`: The top layout with the default style, in which any element can be nested, and must be placed in `Layout`.
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- `Sider`: The sidebar with default style and basic functions, in which any element can be nested, and must be placed in `Layout`.
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- `Content`: The content layout with the default style, in which any element can be nested, and must be placed in `Layout`.
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- `Footer`: The bottom layout with the default style, in which any element can be nested, and must be placed in `Layout`.
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> Based on `flex layout`, please pay attention to the [compatibility](http://caniuse.com/#search=flex).
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## API
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```jsx
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<Layout>
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<Header>header</Header>
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<Layout>
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<Sider>left sidebar</Sider>
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<Content>main content</Content>
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<Sider>right sidebar</Sider>
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</Layout>
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<Footer>footer</Footer>
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</Layout>
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```
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### Layout
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The wrapper.
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| class | container className | string | - |
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| hasSider | whether contain Sider in children, don't have to assign it normally. Useful in ssr avoid style flickering | boolean | - |
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| style | to customize the styles | object\|string | - |
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### Layout.Sider
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The sidebar.
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| breakpoint | [breakpoints](/components/grid#api) of the responsive layout | `xs` \| `sm` \| `md` \| `lg` \| `xl` \| `xxl` | - | |
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| class | container className | string | - | |
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| collapsed(v-model) | to set the current status | boolean | - | |
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| collapsedWidth | width of the collapsed sidebar, by setting to `0` a special trigger will appear | number | 80 | |
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| collapsible | whether can be collapsed | boolean | false | |
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| defaultCollapsed | to set the initial status | boolean | false | |
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| reverseArrow | reverse direction of arrow, for a sider that expands from the right | boolean | false | |
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| style | to customize the styles | object\|string | - | |
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| theme | color theme of the sidebar | `light` \| `dark` | `dark` | |
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| trigger | specify the customized trigger, set to null to hide the trigger | string\|slot | - | |
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| width | width of the sidebar | number\|string | 200 | |
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| zeroWidthTriggerStyle | to customize the styles of the special trigger that appears when `collapsedWidth` is 0 | object | - | 1.5.0 |
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### Events
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| Events Name | Description | Arguments | |
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| --- | --- | --- | --- |
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| breakpoint | the callback function, executed when [breakpoints](/components/grid#api) changed | (broken) => {} | - |
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| collapse | the callback function, executed by clicking the trigger or activating the responsive layout | (collapsed, type) => {} | |
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#### breakpoint width
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```jsx
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{
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xs: '480px',
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sm: '576px',
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md: '768px',
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lg: '992px',
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xl: '1200px',
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xxl: '1600px',
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xxxl: '2000px',
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}
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```
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