org.zkoss.zhtml.Utils Maven / Gradle / Ivy
/* Utils.java
Purpose:
Description:
History:
Thu Jun 3 19:10:51 TST 2010, Created by tomyeh
Copyright (C) 2010 Potix Corporation. All Rights Reserved.
*/
package org.zkoss.zhtml;
import org.zkoss.zk.ui.Execution;
import org.zkoss.zk.ui.Page;
import org.zkoss.zk.ui.sys.HtmlPageRenders;
/**
* Utilities.
*
* @author tomyeh
* @since 5.0.3
*/
/* package */ class Utils {
/**
* Adds HtmlPageRenders.outHeaderZkTags if necessary.
*
* @param tag
* the tag name, such as "head", "body" and "html"
*/
/* package */ static void addHeaderZkTags(Execution exec, Page page, StringBuffer buf,
String tag) {
if (HtmlPageRenders.isDirectContent(exec)) {
final String zktags = HtmlPageRenders.outHeaderZkTags(exec, page);
if (zktags != null && zktags.length() > 0) {
int j = buf.indexOf("<" + tag);
if (j >= 0) {
j += tag.length() + 1;
for (int len = buf.length(); j < len; ++j) {
if (buf.charAt(j) == '>') {
buf.insert(j + 1, zktags);
return; // done
}
}
}
buf.append(zktags);
}
}
}
/**
* Adds both headers and other ZK-related tags.
*
* @param tag
* the tag name, such as "head", "body" and "html"
*/
/* package */ static void addAllZkTags(Execution exec, Page page, StringBuffer buf,
String tag) {
addHeaderZkTags(exec, page, buf, tag);
final String msg = HtmlPageRenders.outUnavailable(exec);
if (msg != null && msg.length() > 0) {
final int j = buf.lastIndexOf("');
if (j >= 0)
buf.insert(j, msg);
else
buf.append(msg);
}
}
}