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update documentation (#4814)

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Cilibiu Bogdan 2019-06-06 13:17:22 +03:00 committed by Denys Vuika
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docs/user-guide/rtl-support.md
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@ -5,30 +5,85 @@ Added: 2019-03-13
# Right-to-left language support # Right-to-left language support
ADF currently has limited support for languages that are written from right to left (such as Arabic). ADF currently has partial support for languages that are written from right to left (such as Arabic) and has been tested to work with the HTML [`dir` attribute](https://www.w3.org/TR/html51/dom.html#the-dir-attribute) added to the main `<body>` element.
ADF has been updated and tested to work with the HTML This is handled automatically by the framework and can be configured through `app.config.json`.
[`dir` attribute](https://www.w3.org/TR/html51/dom.html#the-dir-attribute)
added to the main `<body>` element in `index.html`. When the attribute is set to
`rtl`, text in the app will be right-aligned as required for right-to-left languages:
```html ## Configuration
<body dir="rtl"> Since directionality cannot be inferred from information about the locale, there is a one-to-one relation between locale and language configuration in `app.config.json`.
The minimum configuration is to declare the `"direction": "rtl"` alt the level of the language entry associated with your browser locale. Omitting `direction` or failing to map it with a language key will default to `ltr`.
```json
// browser locale 'ar'
{
... ...
</body> "languages": [
...
{
"key": "ar",
"direction": "rtl"
},
...
],
...
}
``` ```
If you use the [Sidenav Layout component](../core/components/sidenav-layout.component.md) you can choose set the direction property in it using the property direction ans set it to **'rtl'** If it is desired to start the application with a certain language locale and not default to browser locale, we can specify the `locale` at the configuration level and associate it with a language entry.
```json
```html {
<adf-sidenav-layout ...
[direction]="'rtl'"> "locale": "ar",
...... "languages": [
</adf-sidenav-layout> ...
{
"key": "ar",
"direction": "rtl"
},
...
],
...
}
```
## UserPreferencesService
For cases where a component logic depends on direction values over time, `UserPreferencesService` can be used to get information about the current direction value.
```typescript
import { Component, OnInit } from '@angular/core';
import { Direction } from '@angular/cdk/bidi';
import { UserPreferencesService } from '@alfresco/adf-core';
@Component({
...
})
export class MyComponent implements InInit {
constructor( private userPreferencesService: UserPreferencesService) { }
ngOnInit() {
this.userPreferencesService
.select('textOrientation')
.subscribe((direction: Direction) => {
console.log(direction); // 'ltr' / 'rtl'
});
}
}
``` ```
## MatIcon
Currently, [mat-icon](https://material.angular.io/components/icon/overview) doesn't support [directionality](https://material.angular.io/components/icon/overview#bidirectionality) out of the box. As a workaround, this can be managed by adding a general styling rule, to the application top styling file. This will also ensure that [overlay](https://material.angular.io/cdk/overlay/overview) components will also be affected by direction.
```css
/* app.component.scss */
[dir='rtl'] .mat-icon {
transform: scale(-1, 1);
}
```
Also, we have a [translation file](internationalization.md) for Arabic (code: "ar"), Also, we have a [translation file](internationalization.md) for Arabic (code: "ar"),
which is the which is the