JSF render dir =“rtl”当语言是阿拉伯语时 [英] JSF render dir="rtl" when language is arabic
问题描述
当我的JSF应用程序中的浏览器的Accept-Language是阿拉伯语时，我想在inputText中呈现文本方向rtl（从右到左）。当接受语言是英文时，用户引入的文本将是dir =ltr（从左到右）。如何做？
I want to render the text direction rtl (Right-To-Left) in an inputText when the browser's Accept-Language is arabic in my JSF application. When Accept-Language is english the text introduced by the user would be dir="ltr" (Left-To-Right). How can I do it?
推荐答案
客户端的 Accept-Language 可以通过 UIViewRoot＃的getLocale（） 。 UIViewRoot 依次为EL，可用作＃{view} 。所以，这应该是：
The client's Accept-Language is indirectly available via UIViewRoot#getLocale(). The UIViewRoot is in turn in EL available as #{view}. So, this should do:
<h:inputText ... dir="#{view.locale.language eq 'ar' ? 'rtl' : 'ltr'}" />
请注意，还支持 dir 所有其他组件和HTML元素，例如< h：form> 甚至< html> p>
Note that the dir is also supported on all other components and HTML elements, such as <h:form> and even <html>.
<html ... dir="#{view.locale.language eq 'ar' ? 'rtl' : 'ltr'}">
它将应用于其所有子项，除非被不同的设置目录覆盖。这将节省您对所有子组件/元素重复相同的属性。
It would be applied on all its children unless overridden by a differently set dir. That would save you from repeating the very same attribute over all child components/elements.
另请注意，JSF将仅接受在<$ c $中明确注册的语言环境 faces-config.xml 中的c>< locale-config> 。所以如果你还没有 ar ，那么上述不行，不管 Accept-Language 标题。
Also note that the JSF will only accept locales which are explicitly registered in <locale-config> in faces-config.xml. So if you don't already have ar in there, then the above wouldn't work irrespective of Accept-Language header.
<application>
<locale-config>
<default-locale>en</default-locale>
<supported-locale>ar</supported-locale>
...
</locale-config>
</application>
如果需要，将逻辑移动到托管bean，以便您可以如下所示结束：
Move if necessary the logic to a managed bean so that you can end up like below:
<h:inputText ... dir="#{localeManager.dir}" />
另请参见：
- JSF中的本地化，如何记住选择每个会话的区域设置而不是每个请求/视图
- Localization in JSF, how to remember selected locale per session instead of per request/view
See also:
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