Add section navigation controls

iffy.coffee

@@ -127,6 +127,8 @@ class Nevgen
 			nevgen = nevgen.NextI()
 		nevgen
 	NextI: () ->
+		if @wst.nev.FEndsSection()
+			return null
 		if @respo?
 			respoNext = @respo.Next(this)
 			wst = @wst
@@ -150,7 +152,13 @@ class Gst
 		isectionRemove = @rgsection.length - 1
 		@rgsection.splice(isectionRemove, 1)
 		@rgwstInit.splice(isectionRemove, 1)
-
+		@Display()
+		
+	PushSection: (section, wst) ->
+		@rgsection.push(section)
+		@rgwstInit.push(wst)
+		@Display()
+		
 	SectionCurrent: () ->
 		@rgsection[@rgsection.length - 1]
 		
@@ -166,6 +174,11 @@ class Gst
 		dgEnter = () -> $(this).addClass('hover')
 		dgLeave = () -> $(this).removeClass('hover')
 		
+		# show "previous section" link
+		if @rgsection.length > 1
+			@jDiv.append("<div class='iffy-section-nav'>#{@Link("Previous section", () => @GoBackOneSection())}</div>")
+		
+		# show all nevs in section
 		@rgwst = null
 		@rgwst = @RgwstRun()
 		for wst in @rgwst
@@ -175,6 +188,11 @@ class Gst
 			jDivNev.hover(dgEnter, dgLeave)
 			@wstLast = wst
 		
+		# show "next section" link
+		stHtmlNav = @wstLast.nev.StHtmlNextSection(this, @wstLast)
+		if stHtmlNav?
+			@jDiv.append("<div class='iffy-section-nav'>#{stHtmlNav}</div>")
+
 		for stId_dgOnClick in @mpstId_dgOnClick
 			@jDiv.find("##{stId_dgOnClick[0]}").click(stId_dgOnClick[1])
 	
@@ -288,7 +306,12 @@ class Nev
 			wst = wst.WstPrev()
 		return false
 	FCanRun: (gst, wst) -> not @FHasRun(wst)
+	FEndsSection: () -> $(@dNev).attr("nextsection")?
 	RunAction: (gst, wst) ->
+	StHtmlNextSection: (gst, wst) ->
+		stSectionNext = $(@dNev).attr("nextsection")
+		if stSectionNext?
+			gst.Link("Next section", () -> gst.PushSection(gst.story.SectionByName(stSectionNext), wst))
 	StHtmlDisplay: (gst, wst) ->
 		jdivTmp = $("<div/>")
 		for dHTML in $(@dNev).contents()

timemachine.xml

@@ -31,7 +31,7 @@
 	    </verb>
 	  </word>
 	  <word name="button">
-	    <verb name="Push">
+	    <verb name="Push" nextsection="next">
 	      <p>Larry reaches for the button and gives it a push.</p>
 	      <p>"Nothing happened", says Larry, looking at the [computer].</p>
 	      <p>"I <i>told</i> you you were going to push it," says [Richard].</p>
@@ -45,4 +45,9 @@
 	    <p>"Never mind," says [Richard].</p>
 	  </pastresponse>
   </section>
+  <section name="next">
+  	<nev name="start">
+  		Larry is alone with the DeLorean in the lab, for the first time.
+  	</nev>
+  </section>
 </story>