directoryview.java

源码/软件简介: 云网论坛1.1RC国际版是采用JSP开发的集论坛、CMS（网站内容管理系统）、博客、聊天室、商城、交友、语音灌水等于一体的门户式社区。拥有CWBBS ( Cloud Web BBS

package cn.js.fan.module.cms;

import cn.js.fan.util.StrUtil;
import java.util.Vector;
import javax.servlet.jsp.JspWriter;
import java.util.Iterator;
import org.apache.log4j.Logger;
import cn.js.fan.web.SkinUtil;
import javax.servlet.http.HttpServletRequest;

public class DirectoryView {
    public Logger logger;
    public Leaf rootLeaf;
    public Vector UprightLineNodes = new Vector(); //用于显示竖线
    HttpServletRequest request;

    public DirectoryView(Leaf rootLeaf) {
        this.rootLeaf = rootLeaf;
        logger = Logger.getLogger(Leaf.class.getName());
    }

    public DirectoryView(HttpServletRequest request, Leaf rootLeaf) {
        this.rootLeaf = rootLeaf;
        this.request = request;
    }

    public void ListSimple(JspWriter out, String target, String link, String tableClass, String tableClassMouseOn) throws Exception {
        ListTreeSimple(out, rootLeaf, true, target, link, tableClass, tableClassMouseOn);
    }

    // 显示根结点为leaf的树
    void ListTreeSimple(JspWriter out, Leaf leaf,
                  boolean isLastChild, String target, String link, String tableClass, String tableClassMouseOn) throws Exception {
        ShowLeafSimple(out, leaf, isLastChild, target, link, tableClass, tableClassMouseOn);
        Directory dir = new Directory();
        Vector children = dir.getChildren(leaf.getCode());
        int size = children.size();
        if (size == 0)
            return;

        int i = 0;
        if (size > 0)
            out.print("<table id='childoftable" + leaf.getCode() +
                    "' cellspacing=0 cellpadding=0 width='100%' align=center><tr><td>");
        Iterator ri = children.iterator();
        //写跟贴
        while (ri.hasNext()) {
            i++;
            Leaf childlf = (Leaf) ri.next();
            boolean isLastChild1 = true;
            if (size != i)
                isLastChild1 = false;
            ListTreeSimple(out, childlf, isLastChild1, target, link, tableClass, tableClassMouseOn);
        }
        if (size > 0)
            out.print("</td></tr></table>");
    }

    /**
     * isLastChild 是否为其父亲结点的最后一个孩子结点
     **/
    void ShowLeafSimple(JspWriter out, Leaf leaf,
                  boolean isLastChild, String target, String link, String tableClass, String tableClassMouseOn) throws Exception {
        String code = leaf.getCode();
        String name = leaf.getName();
        int layer = leaf.getLayer();
        String description = leaf.getDescription();

        if (!isLastChild) {
            Leaf brotherleaf = leaf.getBrother("down");
            // System.out.println("brother=" + brotherleaf);
            // 如果兄弟结点存在
            if (brotherleaf != null) {
                // 取其所有的孩子结点
                Vector r = new Vector();
                leaf.getAllChild(r, leaf);
                int count = r.size();
                if (count>0) {
                    UprightLineNode uln = new UprightLineNode(layer, count);
                    // System.out.println(leaf.getCode() + " layer=" + layer +
                    //                   " count=" + count);
                    UprightLineNodes.addElement(uln);
                }
            }
        }

        int childcount = leaf.getChildCount();
        // System.out.println(code + " childcount=" + childcount);

        String tableid = "table" + leaf.getCode();

        out.println("<table id=" + tableid + " name=" + tableid + " class='" + tableClass + "' cellspacing=0 cellpadding=0 width='100%' align=center onMouseOver=\"this.className='" + tableClassMouseOn + "'\" onMouseOut=\"this.className='" + tableClass + "'\" border=0>");
        out.println("    <tbody><tr>");
        out.println("        <td height='13' align=left nowrap>");
        // for (int k = 1; k <= layer - 1; k++) {
        for (int k = rootLeaf.getLayer(); k <= layer - 1; k++) {
            boolean isShowed = false;
            Iterator ir = UprightLineNodes.iterator();
            while (ir.hasNext()) {
                UprightLineNode node = (UprightLineNode) ir.next();
                //如果在K层上存在一个竖线结点则画出
                if (node.getLayer() == k) {
                    node.show(out, "images/i_plus-2.gif");
                    if (node.getCount() == 0) {
                        UprightLineNodes.remove(node);
                        //System.out.println("Remove " + node);
                    }
                    isShowed = true;
                    break;
                }
            }
            if (!isShowed)
                out.println("<img src='' width=20 height=1>");
        }

        if (leaf.getCode().equals(rootLeaf.getCode())) { // 如果是根结点
            out.println("<img onClick=\"ShowChild(this, '" + tableid + "')\" src='images/i_puls-root.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
        } else {
            if (isLastChild) { // 是最后一个孩子结点
                if (childcount > 0)
                    out.println("<img onClick=\"ShowChild(this, '" + tableid + "')\" src='images/i_plus2-2.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
                else
                    out.println("<img src='images/i_plus-2-3.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
            } else { // 不是最后一个孩子结点
                if (childcount > 0)
                    out.println("<img onClick=\"ShowChild(this, '" + tableid + "')\" src='images/i_plus2-1.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
                else
                    out.println("<img src='images/i_plus-2-2.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
            }
        }

        // 三种类型节点，用同一个Link
        out.print(
                "<a target='" + target + "' href='" + link + "?dir_code=" +
                StrUtil.UrlEncode(code) + "'>" + name + "</a>");

        out.print("     </td>");
        out.println("  </tr></tbody></table>");
    }

    public void list(JspWriter out) throws Exception {
        ListTree(out, rootLeaf, true);
    }

    // 显示根结点为leaf的树
    void ListTree(JspWriter out, Leaf leaf,
                  boolean isLastChild) throws Exception {
        ShowLeaf(out, leaf, isLastChild);
/*
        // 初始化权限数据库
        LeafPriv lp = new LeafPriv();
        lp.setDirCode(leaf.getCode());
        try {
            lp.add("Everyone", lp.TYPE_USERGROUP);
        }
        catch (ErrMsgException e) {
        }
*/
        Directory dir = new Directory();
        Vector children = dir.getChildren(leaf.getCode());
        int size = children.size();
        if (size == 0)
            return;

        int i = 0;
        if (size > 0)
            out.print("<table id='childoftable" + leaf.getCode() +
                    "' cellspacing=0 cellpadding=0 width='100%' align=center><tr><td>");
        Iterator ri = children.iterator();
        //写跟贴
        while (ri.hasNext()) {
            i++;
            Leaf childlf = (Leaf) ri.next();
            boolean isLastChild1 = true;
            if (size != i)
                isLastChild1 = false;
            ListTree(out, childlf, isLastChild1);
        }
        if (size > 0)
            out.print("</td></tr></table>");
    }

    /**
     * isLastChild 是否为其父亲结点的最后一个孩子结点
     **/
    void ShowLeaf(JspWriter out, Leaf leaf,
                  boolean isLastChild) throws Exception {
        String code = leaf.getCode();
        String name = leaf.getName();
        int layer = leaf.getLayer();
        String description = leaf.getDescription();

        if (!isLastChild) {
            // System.out.println("get leaf brother" + leaf.getName());
            Leaf brotherleaf = leaf.getBrother("down");
            // System.out.println("brother=" + brotherleaf);
            // 如果兄弟结点存在
            if (brotherleaf != null) {
                // 取其所有的孩子结点
                Vector r = new Vector();
                leaf.getAllChild(r, leaf);
                int count = r.size();
                if (count>0) { // =0的也计入的话会在树底端的结点产生多余竖线
                    UprightLineNode uln = new UprightLineNode(layer, count);
                    // System.out.println(leaf.getCode() + " layer=" + layer +
                    //                   " count=" + count);
                    UprightLineNodes.addElement(uln);
                }
            }
        }

        int childcount = leaf.getChildCount();
        // System.out.println(code + " childcount=" + childcount);

        String tableid = "table" + leaf.getCode();

        out.println("<table id=" + tableid + " name=" + tableid + " class='tbg1' cellspacing=0 cellpadding=0 width='100%' align=center onMouseOver=\"this.className='tbg1sel'\" onMouseOut=\"this.className='tbg1'\" border=0>");
        out.println("    <tbody><tr>");
        out.println("        <td width='85%' height='13' align=left nowrap>");
        // for (int k = 1; k <= layer - 1; k++) {
        for (int k = rootLeaf.getLayer(); k <= layer - 1; k++) { // 不用上一行，是因为上一行会产生多余的空格
            boolean isShowed = false;
            Iterator ir = UprightLineNodes.iterator();
            while (ir.hasNext()) {
                UprightLineNode node = (UprightLineNode) ir.next();
                //如果在K层上存在一个竖线结点则画出
                if (node.getLayer() == k) {
                    node.show(out, "images/i_plus-2.gif");
                    if (node.getCount() == 0) {
                        UprightLineNodes.remove(node);
                        //System.out.println("Remove " + node);
                    }
                    isShowed = true;
                    break;
                }
            }
            if (!isShowed)
                out.println("<img src='' width=20 height=1>");
        }

        if (leaf.getCode().equals(rootLeaf.getCode())) { // 如果是根结点
            out.println("<img tableRelate='' onClick=\"ShowChild(this, '" + tableid + "')\" src='images/i_puls-root.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
        } else {
            if (isLastChild) { // 是最后一个孩子结点
                if (childcount > 0)
                    out.println("<img tableRelate='" + tableid + "' onClick=\"ShowChild(this, '" + tableid + "')\" src='images/i_plus2-2.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
                else
                    out.println("<img src='images/i_plus-2-3.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
            } else { // 不是最后一个孩子结点
                if (childcount > 0)
                    out.println("<img tableRelate='" + tableid + "' onClick=\"ShowChild(this, '" + tableid + "')\" src='images/i_plus2-1.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
                else
                    out.println("<img src='images/i_plus-2-2.gif' align='absmiddle'><img src='images/folder_01.gif' align='absmiddle'>");
            }
        }

        if (leaf.getType() == 2) {
            out.print("<a target=_parent href='document_list_m.jsp?dir_code=" +