public int doStartTag() throws JspException {
try {
SiteContext sc =
(SiteContext) pageContext.getRequest().getAttribute(SiteContext.SITE_CONTEXT_KEY);
AccessRuleEngine re =
ContextUtils.getAccessRuleEngine((HttpServletRequest) pageContext.getRequest());
Page page = null;
Page currentInTree = sc.getPage();
if (m_strParent != null) // 直接指定了要展现的根栏目
page = (Page) pageContext.getAttribute(m_strParent);
else if (m_iLevel > -1) { // 指定了要展现的级别
if (m_iLevel <= currentInTree.getLevel()) {
page = currentInTree;
while (m_iLevel < page.getLevel()) page = page.getParent();
}
} else { // 没有指定根栏目
TreeTag tt = (TreeTag) TagSupport.findAncestorWithClass(this, TreeTag.class);
if (tt != null) page = tt.getPage();
else page = sc.getBranch().getHome(re);
}
if (page == null) return SKIP_BODY;
m_enum = Collections.enumeration(page.getPages(re, false, true));
Object next = nextElement();
if (next == null) return SKIP_BODY;
m_bFirst = true;
if (m_strName != null) pageContext.setAttribute(m_strName, next);
return EVAL_BODY_BUFFERED;
} catch (Exception e) {
e.printStackTrace();
throw new JspException(e.getMessage());
}
}
/**
*
*
* <pre>
* 根据area中的内容里包含的 < h1 > 和 < h2 > 元素自动生成目录
* </pre>
*
* @param request
* @param area
* @param model
* @return
*/
@Window("toc")
public String tocWindow(
HttpServletRequest request, @RequestParam("area") String area, Model model) {
SiteContext sc = (SiteContext) request.getAttribute(SiteContext.SITE_CONTEXT_KEY);
if (sc == null) return "";
Page page = sc.getPage();
String index = tocMap.get(page.getPath());
if (index == null) {
List<Area> areas = page.getAreas(area);
if (areas == null || areas.size() < 1) return "";
StringBuffer sb = new StringBuffer();
sb.append(
"<nav id=\"docindex\" class=\"bs-docs-sidebar\"><ul class=\"nav bs-docs-sidenav\">");
int level = 0;
Matcher m = LINKS.matcher(areas.get(0).getContent());
while (m.find()) {
switch (m.group(1)) {
case "1":
switch (level) {
case 0:
sb.append("<li>");
break;
case 1:
sb.append("</li><li>");
break;
case 2:
sb.append("</li></ul></li><li>");
break;
}
level = 1;
break;
case "2":
switch (level) {
case 0:
sb.append("<li><ul class=\"nav\"><li>");
break;
case 1:
sb.append("<ul class=\"nav\"><li>");
break;
case 2:
sb.append("</li><li>");
break;
}
level = 2;
break;
}
sb.append("<a class=\"scroll\" href=\"#")
.append(m.group(3))
.append("\">")
.append(m.group(4))
.append("</a>");
}
switch (level) {
case 1:
sb.append("</li></ul></nav>");
break;
case 2:
sb.append("</li></ul></li></ul></nav>");
break;
}
index = sb.toString();
tocMap.put(page.getPath(), index);
}
model.addAttribute("content", index);
return "toc";
}
