CollapsableWidget.java :  » Testing » StoryTestIQ » fitnesse » wikitext » widgets » Java Open Source

// Copyright (C) 2003,2004,2005 by Object Mentor, Inc. All rights reserved.
// Released under the terms of the GNU General Public License version 2 or later.
package fitnesse.wikitext.widgets;

import fitnesse.html.HtmlElement;
import fitnesse.html.HtmlTag;
import fitnesse.html.HtmlUtil;
import fitnesse.html.RawHtml;

import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class CollapsableWidget extends ParentWidget {
  private static final String ENDL = LineBreakWidget.REGEXP;

  public static final String REGEXP = "!\\*+>? .*?" + ENDL + ".*?" + ENDL + "\\*+!" + ENDL + "?";

  private static final Pattern pattern = Pattern.compile("!\\*+(>)? (.*?)" + ENDL + "(.*?)" + ENDL
      + "\\*+!", Pattern.MULTILINE + Pattern.DOTALL);

  private static Random random = new Random();

  private String cssClass = "collapse_rim";

  private ParentWidget titleWidget;

  public boolean expanded = true;

  private static final String collapsableOpenCss = "collapsable";

  private static final String collapsableClosedCss = "hidden";

  private static final String collapsableOpenImg = "/files/images/collapsableOpen.gif";

  private static final String collapsableClosedImg = "/files/images/collapsableClosed.gif";

  public CollapsableWidget(ParentWidget parent) {
    super(parent);
  }

  public CollapsableWidget(ParentWidget parent, String text) throws Exception {
    this(parent);
    Matcher match = pattern.matcher(text);
    match.find();
    expanded = match.group(1) == null;
    String title = match.group(2);
    String body = match.group(3);
    init(title, body);
  }

  public CollapsableWidget(ParentWidget parent, String title, String body, String cssClass)
      throws Exception {
    this(parent);
    init(title, body);
    this.cssClass = cssClass;
  }

  private void init(String title, String body) throws Exception {
    titleWidget = new BlankParentWidget(this, "!meta " + title);
    addChildWidgets(body);
  }

  public String render() throws Exception {
    HtmlElement titleElement = new RawHtml(" " + titleWidget.childHtml());
    HtmlElement bodyElement = new RawHtml(childHtml());
    HtmlElement html = makeCollapsableSection(titleElement, bodyElement);
    return html.html();
  }

  public HtmlTag makeCollapsableSection(HtmlElement title, HtmlElement content) {
    String id = random.nextLong() + "";
    HtmlTag outerDiv = HtmlUtil.makeDivTag(cssClass);

    HtmlTag image = new HtmlTag("img");
    image.addAttribute("src", imageSrc());
    image.addAttribute("class", "imageleft");
    image.addAttribute("id", "img" + id);
    HtmlTag anchor = new HtmlTag("a", image);
    anchor.addAttribute("class", "anchoredimage");
    anchor.addAttribute("href", "javascript:toggleCollapsable('" + id + "');");
    outerDiv.add(anchor);
    outerDiv.add(title);

    HtmlTag collapsablediv = makeCollapsableDiv();
    collapsablediv.addAttribute("id", id);
    collapsablediv.add(content);
    outerDiv.add(collapsablediv);

    return outerDiv;
  }

  private HtmlTag makeCollapsableDiv() {
    if (!expanded)
      return HtmlUtil.makeDivTag(collapsableClosedCss);
    else
      return HtmlUtil.makeDivTag(collapsableOpenCss);
  }

  private String imageSrc() {
    if (expanded)
      return collapsableOpenImg;
    else
      return collapsableClosedImg;
  }
}