package org.itsnat.spitut;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.itsnat.core.ItsNatServlet;
import org.itsnat.core.domutil.ItsNatDOMUtil;
import org.itsnat.core.event.ItsNatUserEvent;
import org.itsnat.core.html.ItsNatHTMLDocument;
import org.itsnat.core.http.ItsNatHttpServletRequest;
import org.itsnat.core.http.ItsNatHttpServletResponse;
import org.itsnat.core.tmpl.ItsNatDocFragmentTemplate;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.events.Event;
import org.w3c.dom.events.EventListener;
import org.w3c.dom.html.HTMLDocument;
import org.w3c.dom.html.HTMLTitleElement;
public class SPITutMainDocument implements EventListener
{
protected ItsNatHTMLDocument itsNatDoc;
protected String title;
protected HTMLTitleElement titleElem;
protected Map<String,Element> menuElemMap = new HashMap<String,Element>();
protected Element currentMenuItemElem;
protected Element contentParentElem;
protected SPITutState currentState;
protected Element googleAnalyticsElem;
protected String googleAnalyticsIFrameURL;
public SPITutMainDocument(ItsNatHttpServletRequest request, ItsNatHttpServletResponse response)
{
this.itsNatDoc = (ItsNatHTMLDocument)request.getItsNatDocument();
HTMLDocument doc = itsNatDoc.getHTMLDocument();
this.titleElem = (HTMLTitleElement)doc.getElementById("titleId");
this.title = titleElem.getText(); // Initial value
menuElemMap.put("overview",doc.getElementById("menuOpOverviewId"));
menuElemMap.put("detail",doc.getElementById("menuOpDetailId"));
// More menu options here...
itsNatDoc.addUserEventListener(null,"setState", this);
this.contentParentElem = doc.getElementById("contentParentId");
this.googleAnalyticsElem = doc.getElementById("googleAnalyticsId");
this.googleAnalyticsIFrameURL = googleAnalyticsElem.getAttribute("src"); // Initial value
HttpServletRequest servReq = request.getHttpServletRequest();
String stateName = servReq.getParameter("_escaped_fragment_"); // Google bot, has priority, its value is based on the hash fragment
if (stateName != null)
{
if (stateName.startsWith("st=")) // st means "state"
stateName = stateName.substring("st=".length(), stateName.length());
else // Wrong format
stateName = "overview";
}
else
{
stateName = servReq.getParameter("st");
if (stateName == null)
stateName = "overview";
}
changeState(stateName);
}
public ItsNatHTMLDocument getItsNatHTMLDocument()
{
return itsNatDoc;
}
public void setStateTitle(String stateTitle)
{
String pageTitle = title + " - " + stateTitle;
if (itsNatDoc.isLoading())
titleElem.setText(pageTitle);
else
itsNatDoc.addCodeToSend("document.title = \"" + pageTitle + "\";\n");
}
public Element getContentParentElement()
{
return contentParentElem;
}
public ItsNatDocFragmentTemplate getFragmentTemplate(String name)
{
ItsNatServlet servlet = itsNatDoc.getItsNatDocumentTemplate().getItsNatServlet();
return servlet.getItsNatDocFragmentTemplate(name);
}
public DocumentFragment loadDocumentFragment(String name)
{
ItsNatDocFragmentTemplate template = getFragmentTemplate(name);
if (template == null) return null;
return template.loadDocumentFragment(itsNatDoc);
}
public String getFragmentName(String stateName)
{
String fragmentName = stateName;
int pos = stateName.indexOf('.');
if (pos != -1) fragmentName = stateName.substring(0, pos); // Case "overview.showpopup"
return fragmentName;
}
public void changeState(String stateName)
{
String fragmentName = getFragmentName(stateName);
ItsNatDocFragmentTemplate template = getFragmentTemplate(fragmentName);
if (template == null)
{
changeState("not_found");
return;
}
// Cleaning previous state:
if (currentState != null)
{
currentState.dispose();
this.currentState = null;
}
ItsNatDOMUtil.removeAllChildren(contentParentElem);
// Setting new state:
changeActiveMenu(stateName);
DocumentFragment frag = template.loadDocumentFragment(itsNatDoc);
contentParentElem.appendChild(frag);
if (stateName.equals("overview")||stateName.equals("overview.showpopup"))
{
boolean popup = stateName.equals("overview.showpopup");
this.currentState = new SPITutStateOverview(this,popup);
}
else if (stateName.equals("detail"))
this.currentState = new SPITutStateDetail(this);
itsNatDoc.addCodeToSend("try{ window.scroll(0,-5000); }catch(ex){}");
// try/catch is used to avoid exceptions when some (mobile) browser does not support window.scroll()
}
public void registerState(SPITutState state)
{
setStateTitle(state.getStateTitle());
String stateName = state.getStateName();
itsNatDoc.addCodeToSend("spiSite.setURLReference(\"" + stateName + "\");");
googleAnalyticsElem.setAttribute("src",googleAnalyticsIFrameURL + stateName);
}
public void handleEvent(Event evt)
{
if (evt instanceof ItsNatUserEvent)
{
ItsNatUserEvent itsNatEvt = (ItsNatUserEvent)evt;
String name = (String)itsNatEvt.getExtraParam("name");
changeState(name);
}
}
public void changeActiveMenu(String stateName)
{
String mainMenuItem;
int pos = stateName.indexOf('.');
if (pos != -1) mainMenuItem = stateName.substring(0, pos); // Case "overview.showpopup"
else mainMenuItem = stateName;
if (currentMenuItemElem != null)
currentMenuItemElem.removeAttribute("class");
this.currentMenuItemElem = menuElemMap.get(mainMenuItem);
if (currentMenuItemElem != null)
currentMenuItemElem.setAttribute("class","menuOpSelected");
}
}