appfuse web.xml文件解释说明－－样式主题

appfuse中web.xml的css样式配置说明:

    <!-- Define the default CSS Theme -->
    <context-param>
        <param-name>theme</param-name>
        <param-value>simplicity</param-value>
    </context-param>

该段用于页面整体风格，appfuse对这个参数的使用如下：

• 在/myapp/src/web/org/appfuse/webapp/listener/StartupListener.java文件中将theme值放入ServletContext
• 在/myapp/src/web/org/appfuse/webapp/filter/LocaleFilter.java文件中将request中的theme值保存到ServletContext

        ServletContext context = event.getServletContext();

        // Orion starts Servlets before Listeners, so check if the config
        // object already exists
        Map config = (HashMap) context.getAttribute(Constants.CONFIG);

        if (config == null) {
            config = new HashMap();
        }
        
        if (context.getInitParameter("theme") != null) {
            config.put("theme", context.getInitParameter("theme"));
        }

        String theme = request.getParameter("theme");
        if (theme != null && request.isUserInRole(Constants.ADMIN_ROLE)) {
            Map config = (Map) getServletContext().getAttribute(Constants.CONFIG);
            config.put("theme", theme);
        }

• 页面根据theme值加载css文件

        <link rel="stylesheet" type="text/css" media="all" href="<c:url value='/styles/${appConfig["theme"]}/theme.css'/>" />
        <link rel="stylesheet" type="text/css" media="print" href="<c:url value='/styles/${appConfig["theme"]}/print.css'/>" />