Add a slide selector

examples/presentation/js/Presentation.deploy.js

@@ -110,6 +110,17 @@ fn: function (html) {
 }),
 smalltalk.Slide);
 
+smalltalk.addMethod(
+'_title',
+smalltalk.method({
+selector: 'title',
+fn: function (){
+var self=this;
+return smalltalk.send(self, "_id", []);
+return self;}
+}),
+smalltalk.Slide);
+
 
 smalltalk.addMethod(
 '_on_',
@@ -355,6 +366,30 @@ fn: function (html) {
 }),
 smalltalk.Presentation);
 
+smalltalk.addMethod(
+'_slidesDo_',
+smalltalk.method({
+selector: 'slidesDo:',
+fn: function (aBlockWithArg){
+var self=this;
+smalltalk.send(smalltalk.send(self, "_slides", []), "_do_", [(function(aSlide){return smalltalk.send(aBlockWithArg, "_value_", [aSlide]);})]);
+return self;}
+}),
+smalltalk.Presentation);
+
+smalltalk.addMethod(
+'_moveAt_',
+smalltalk.method({
+selector: 'moveAt:',
+fn: function (anInteger){
+var self=this;
+var next=nil;
+next=smalltalk.send(smalltalk.send(self, "_slides", []), "_at_ifAbsent_", [anInteger, (function(){return nil;})]);
+(($receiver = next) != nil && $receiver != undefined) ? (function(){self['@currentSlide']=next;return smalltalk.send(next, "_show", []);})() : nil;
+return self;}
+}),
+smalltalk.Presentation);
+
 
 smalltalk.Presentation.klass.iVarNames = ['current'];
 smalltalk.addMethod(
@@ -1228,7 +1263,7 @@ smalltalk.JtalkAndEnyo);
 
 
 
-smalltalk.addClass('PresentationNavigator', smalltalk.Widget, ['presentationBrush', 'currentPresentation'], 'Presentation');
+smalltalk.addClass('PresentationNavigator', smalltalk.Widget, ['presentationBrush', 'currentPresentation', 'slideSelect'], 'Presentation');
 smalltalk.addMethod(
 '_renderToolsOn_',
 smalltalk.method({
@@ -1310,14 +1345,13 @@ smalltalk.addMethod(
 '_renderOn_',
 smalltalk.method({
 selector: 'renderOn:',
-fn: function (html) {
-    var self = this;
-    (function ($rec) {smalltalk.send($rec, "_type_", [unescape("text/css")]);return smalltalk.send($rec, "_with_", [smalltalk.send(self, "_style", [])]);}(smalltalk.send(html, "_style", [])));
-    (function ($rec) {smalltalk.send($rec, "_id_", ["navigator"]);return smalltalk.send($rec, "_with_", [function () {return function ($rec) {smalltalk.send($rec, "_renderToolsOn_", [html]);return smalltalk.send($rec, "_renderPresentationSelectOn_", [html]);}(self);}]);}(smalltalk.send(html, "_div", [])));
-    self['@presentationBrush'] = function ($rec) {smalltalk.send($rec, "_id_", ["presentation"]);return smalltalk.send($rec, "_yourself", []);}(smalltalk.send(html, "_div", []));
-    smalltalk.send(self, "_renderCurrentPresentation", []);
-    return self;
-}
+fn: function (html){
+var self=this;
+(function($rec){smalltalk.send($rec, "_type_", [unescape("text/css")]);return smalltalk.send($rec, "_with_", [smalltalk.send(self, "_style", [])]);})(smalltalk.send(html, "_style", []));
+(function($rec){smalltalk.send($rec, "_id_", ["navigator"]);return smalltalk.send($rec, "_with_", [(function(){return (function($rec){smalltalk.send($rec, "_renderToolsOn_", [html]);smalltalk.send($rec, "_renderPresentationSelectOn_", [html]);return smalltalk.send($rec, "_renderSlideSelectOn_", [html]);})(self);})]);})(smalltalk.send(html, "_div", []));
+self['@presentationBrush']=(function($rec){smalltalk.send($rec, "_id_", ["presentation"]);return smalltalk.send($rec, "_yourself", []);})(smalltalk.send(html, "_div", []));
+smalltalk.send(self, "_renderCurrentPresentation", []);
+return self;}
 }),
 smalltalk.PresentationNavigator);
 
@@ -1363,13 +1397,13 @@ smalltalk.addMethod(
 '_selectPresentationNamed_',
 smalltalk.method({
 selector: 'selectPresentationNamed:',
-fn: function (aString) {
-    var self = this;
-    var presentationClass = nil;
-    presentationClass = smalltalk.send(smalltalk.send(smalltalk.Smalltalk || Smalltalk, "_current", []), "_at_", [aString]);
-    ($receiver = presentationClass) != nil && $receiver != undefined ? function () {return smalltalk.send(self, "_selectPresentation_", [presentationClass]);}() : nil;
-    return self;
-}
+fn: function (aString){
+var self=this;
+var presentationClass=nil;
+presentationClass=smalltalk.send(smalltalk.send((smalltalk.Smalltalk || Smalltalk), "_current", []), "_at_", [aString]);
+(($receiver = presentationClass) != nil && $receiver != undefined) ? (function(){return smalltalk.send(self, "_selectPresentation_", [presentationClass]);})() : nil;
+smalltalk.send(self, "_updateSlideSelect", []);
+return self;}
 }),
 smalltalk.PresentationNavigator);
 
@@ -1434,6 +1468,43 @@ fn: function () {
 }),
 smalltalk.PresentationNavigator);
 
+smalltalk.addMethod(
+'_renderSlideSelectOn_',
+smalltalk.method({
+selector: 'renderSlideSelectOn:',
+fn: function (html){
+var self=this;
+self['@slideSelect']=smalltalk.send(html, "_select", []);
+smalltalk.send(self['@slideSelect'], "_onChange_", [(function(){return smalltalk.send(self, "_selectSlideAt_", [smalltalk.send(smalltalk.send(self['@slideSelect'], "_asJQuery", []), "_val", [])]);})]);
+smalltalk.send(self, "_updateSlideSelect", []);
+return self;}
+}),
+smalltalk.PresentationNavigator);
+
+smalltalk.addMethod(
+'_selectSlideAt_',
+smalltalk.method({
+selector: 'selectSlideAt:',
+fn: function (anInteger){
+var self=this;
+smalltalk.send((smalltalk.Transcript || Transcript), "_show_", [anInteger]);
+smalltalk.send(smalltalk.send(self, "_currentPresentation", []), "_moveAt_", [anInteger]);
+return self;}
+}),
+smalltalk.PresentationNavigator);
+
+smalltalk.addMethod(
+'_updateSlideSelect',
+smalltalk.method({
+selector: 'updateSlideSelect',
+fn: function (){
+var self=this;
+smalltalk.send(self['@slideSelect'], "_contents_", [(function(html){var index=nil;
+index=(0);return smalltalk.send(smalltalk.send(self, "_currentPresentation", []), "_slidesDo_", [(function(aSlide){index=((($receiver = index).klass === smalltalk.Number) ? $receiver +(1) : smalltalk.send($receiver, "__plus", [(1)]));return (function($rec){smalltalk.send($rec, "_value_", [index]);return smalltalk.send($rec, "_with_", [smalltalk.send(aSlide, "_title", [])]);})(smalltalk.send(html, "_option", []));})]);})]);
+return self;}
+}),
+smalltalk.PresentationNavigator);
+
 
 smalltalk.addMethod(
 '_initialize',

examples/presentation/js/Presentation.js

@@ -155,6 +155,22 @@ referencedClasses: []
 }),
 smalltalk.Slide);
 
+smalltalk.addMethod(
+unescape('_title'),
+smalltalk.method({
+selector: unescape('title'),
+category: 'accessing',
+fn: function (){
+var self=this;
+return smalltalk.send(self, "_id", []);
+return self;},
+args: [],
+source: unescape('title%0A%09%5E%20self%20id'),
+messageSends: ["id"],
+referencedClasses: []
+}),
+smalltalk.Slide);
+
 
 smalltalk.addMethod(
 unescape('_on_'),
@@ -495,6 +511,40 @@ referencedClasses: []
 }),
 smalltalk.Presentation);
 
+smalltalk.addMethod(
+unescape('_slidesDo_'),
+smalltalk.method({
+selector: unescape('slidesDo%3A'),
+category: 'enumerating',
+fn: function (aBlockWithArg){
+var self=this;
+smalltalk.send(smalltalk.send(self, "_slides", []), "_do_", [(function(aSlide){return smalltalk.send(aBlockWithArg, "_value_", [aSlide]);})]);
+return self;},
+args: ["aBlockWithArg"],
+source: unescape('slidesDo%3A%20aBlockWithArg%0A%09self%20slides%20do%3A%20%5B%3AaSlide%7C%20aBlockWithArg%20value%3A%20aSlide%5D.'),
+messageSends: ["do:", "slides", "value:"],
+referencedClasses: []
+}),
+smalltalk.Presentation);
+
+smalltalk.addMethod(
+unescape('_moveAt_'),
+smalltalk.method({
+selector: unescape('moveAt%3A'),
+category: 'actions',
+fn: function (anInteger){
+var self=this;
+var next=nil;
+next=smalltalk.send(smalltalk.send(self, "_slides", []), "_at_ifAbsent_", [anInteger, (function(){return nil;})]);
+(($receiver = next) != nil && $receiver != undefined) ? (function(){self['@currentSlide']=next;return smalltalk.send(next, "_show", []);})() : nil;
+return self;},
+args: ["anInteger"],
+source: unescape('moveAt%3A%20anInteger%0A%09%7C%20next%20%7C%0A%09next%20%3A%3D%20self%20slides%20%0A%09%09%09at%3A%20anInteger%0A%09%09%09ifAbsent%3A%20%5Bnil%5D.%0A%09next%20ifNotNil%3A%20%5BcurrentSlide%20%3A%3D%20next.%20next%20show%5D'),
+messageSends: ["at:ifAbsent:", "slides", "ifNotNil:", "show"],
+referencedClasses: []
+}),
+smalltalk.Presentation);
+
 
 smalltalk.Presentation.klass.iVarNames = ['current'];
 smalltalk.addMethod(
@@ -1698,7 +1748,7 @@ smalltalk.JtalkAndEnyo);
 
 
 
-smalltalk.addClass('PresentationNavigator', smalltalk.Widget, ['presentationBrush', 'currentPresentation'], 'Presentation');
+smalltalk.addClass('PresentationNavigator', smalltalk.Widget, ['presentationBrush', 'currentPresentation', 'slideSelect'], 'Presentation');
 smalltalk.addMethod(
 unescape('_renderToolsOn_'),
 smalltalk.method({
@@ -1811,17 +1861,16 @@ unescape('_renderOn_'),
 smalltalk.method({
 selector: unescape('renderOn%3A'),
 category: 'rendering',
-fn: function (html) {
-    var self = this;
-    (function ($rec) {smalltalk.send($rec, "_type_", [unescape("text/css")]);return smalltalk.send($rec, "_with_", [smalltalk.send(self, "_style", [])]);}(smalltalk.send(html, "_style", [])));
-    (function ($rec) {smalltalk.send($rec, "_id_", ["navigator"]);return smalltalk.send($rec, "_with_", [function () {return function ($rec) {smalltalk.send($rec, "_renderToolsOn_", [html]);return smalltalk.send($rec, "_renderPresentationSelectOn_", [html]);}(self);}]);}(smalltalk.send(html, "_div", [])));
-    self['@presentationBrush'] = function ($rec) {smalltalk.send($rec, "_id_", ["presentation"]);return smalltalk.send($rec, "_yourself", []);}(smalltalk.send(html, "_div", []));
-    smalltalk.send(self, "_renderCurrentPresentation", []);
-    return self;
-},
+fn: function (html){
+var self=this;
+(function($rec){smalltalk.send($rec, "_type_", [unescape("text/css")]);return smalltalk.send($rec, "_with_", [smalltalk.send(self, "_style", [])]);})(smalltalk.send(html, "_style", []));
+(function($rec){smalltalk.send($rec, "_id_", ["navigator"]);return smalltalk.send($rec, "_with_", [(function(){return (function($rec){smalltalk.send($rec, "_renderToolsOn_", [html]);smalltalk.send($rec, "_renderPresentationSelectOn_", [html]);return smalltalk.send($rec, "_renderSlideSelectOn_", [html]);})(self);})]);})(smalltalk.send(html, "_div", []));
+self['@presentationBrush']=(function($rec){smalltalk.send($rec, "_id_", ["presentation"]);return smalltalk.send($rec, "_yourself", []);})(smalltalk.send(html, "_div", []));
+smalltalk.send(self, "_renderCurrentPresentation", []);
+return self;},
 args: ["html"],
-source: unescape('renderOn%3A%20html%0A%09html%20style%0A%09%09type%3A%20%27text/css%27%3B%0A%09%09with%3A%20self%20style.%0A%09html%20div%0A%09%09id%3A%20%27navigator%27%3B%0A%09%09with%3A%20%5B%09self%0A%09%09%09%09%09renderToolsOn%3A%20html%3B%0A%09%09%09%09%09renderPresentationSelectOn%3A%20html%09%5D.%0A%0A%09presentationBrush%20%3A%3D%20html%20div%20%0A%09%09%09%09%09%09%09id%3A%20%27presentation%27%3B%0A%09%09%09%09%09%09%09yourself.%0A%0A%09self%20renderCurrentPresentation.'),
-messageSends: ["type:", "with:", "style", "id:", "renderToolsOn:", "renderPresentationSelectOn:", "div", "yourself", "renderCurrentPresentation"],
+source: unescape('renderOn%3A%20html%0A%09html%20style%0A%09%09type%3A%20%27text/css%27%3B%0A%09%09with%3A%20self%20style.%0A%09html%20div%0A%09%09id%3A%20%27navigator%27%3B%0A%09%09with%3A%20%5B%09self%0A%09%09%09%09%09renderToolsOn%3A%20html%3B%0A%09%09%09%09%09renderPresentationSelectOn%3A%20html%3B%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%09renderSlideSelectOn%3A%20html%5D.%0A%0A%09presentationBrush%20%3A%3D%20html%20div%20%0A%09%09%09%09%09%09%09id%3A%20%27presentation%27%3B%0A%09%09%09%09%09%09%09yourself.%0A%0A%09self%20renderCurrentPresentation.'),
+messageSends: ["type:", "with:", "style", "id:", "renderToolsOn:", "renderPresentationSelectOn:", "renderSlideSelectOn:", "div", "yourself", "renderCurrentPresentation"],
 referencedClasses: []
 }),
 smalltalk.PresentationNavigator);
@@ -1884,16 +1933,16 @@ unescape('_selectPresentationNamed_'),
 smalltalk.method({
 selector: unescape('selectPresentationNamed%3A'),
 category: 'callbacks',
-fn: function (aString) {
-    var self = this;
-    var presentationClass = nil;
-    presentationClass = smalltalk.send(smalltalk.send(smalltalk.Smalltalk || Smalltalk, "_current", []), "_at_", [aString]);
-    ($receiver = presentationClass) != nil && $receiver != undefined ? function () {return smalltalk.send(self, "_selectPresentation_", [presentationClass]);}() : nil;
-    return self;
-},
+fn: function (aString){
+var self=this;
+var presentationClass=nil;
+presentationClass=smalltalk.send(smalltalk.send((smalltalk.Smalltalk || Smalltalk), "_current", []), "_at_", [aString]);
+(($receiver = presentationClass) != nil && $receiver != undefined) ? (function(){return smalltalk.send(self, "_selectPresentation_", [presentationClass]);})() : nil;
+smalltalk.send(self, "_updateSlideSelect", []);
+return self;},
 args: ["aString"],
-source: unescape('selectPresentationNamed%3A%20aString%0A%09%7CpresentationClass%7C%0A%09presentationClass%20%3A%3D%20%20%28Smalltalk%20current%20at%3A%20aString%29.%0A%09presentationClass%20ifNotNil%3A%20%5B%20self%20selectPresentation%3A%20presentationClass%20%5D.'),
-messageSends: ["at:", "current", "ifNotNil:", "selectPresentation:"],
+source: unescape('selectPresentationNamed%3A%20aString%0A%09%7CpresentationClass%7C%0A%09presentationClass%20%3A%3D%20%20%28Smalltalk%20current%20at%3A%20aString%29.%0A%09presentationClass%20ifNotNil%3A%20%5B%20self%20selectPresentation%3A%20presentationClass%20%5D.%0A%09self%20updateSlideSelect.'),
+messageSends: ["at:", "current", "ifNotNil:", "selectPresentation:", "updateSlideSelect"],
 referencedClasses: [smalltalk.Smalltalk]
 }),
 smalltalk.PresentationNavigator);
@@ -1984,6 +2033,58 @@ referencedClasses: []
 }),
 smalltalk.PresentationNavigator);
 
+smalltalk.addMethod(
+unescape('_renderSlideSelectOn_'),
+smalltalk.method({
+selector: unescape('renderSlideSelectOn%3A'),
+category: 'rendering',
+fn: function (html){
+var self=this;
+self['@slideSelect']=smalltalk.send(html, "_select", []);
+smalltalk.send(self['@slideSelect'], "_onChange_", [(function(){return smalltalk.send(self, "_selectSlideAt_", [smalltalk.send(smalltalk.send(self['@slideSelect'], "_asJQuery", []), "_val", [])]);})]);
+smalltalk.send(self, "_updateSlideSelect", []);
+return self;},
+args: ["html"],
+source: unescape('renderSlideSelectOn%3A%20html%0A%09slideSelect%20%3A%3D%20html%20select.%0A%09slideSelect%20onChange%3A%20%5B%20self%20%20selectSlideAt%3A%20%20slideSelect%20asJQuery%20val%20%5D.%0A%09self%20updateSlideSelect.'),
+messageSends: ["select", "onChange:", "selectSlideAt:", "val", "asJQuery", "updateSlideSelect"],
+referencedClasses: []
+}),
+smalltalk.PresentationNavigator);
+
+smalltalk.addMethod(
+unescape('_selectSlideAt_'),
+smalltalk.method({
+selector: unescape('selectSlideAt%3A'),
+category: 'callbacks',
+fn: function (anInteger){
+var self=this;
+smalltalk.send((smalltalk.Transcript || Transcript), "_show_", [anInteger]);
+smalltalk.send(smalltalk.send(self, "_currentPresentation", []), "_moveAt_", [anInteger]);
+return self;},
+args: ["anInteger"],
+source: unescape('selectSlideAt%3A%20anInteger%0A%09Transcript%20show%3A%20anInteger.%0A%09self%20currentPresentation%20moveAt%3A%20anInteger'),
+messageSends: ["show:", "moveAt:", "currentPresentation"],
+referencedClasses: [smalltalk.Transcript]
+}),
+smalltalk.PresentationNavigator);
+
+smalltalk.addMethod(
+unescape('_updateSlideSelect'),
+smalltalk.method({
+selector: unescape('updateSlideSelect'),
+category: 'rendering',
+fn: function (){
+var self=this;
+smalltalk.send(self['@slideSelect'], "_contents_", [(function(html){var index=nil;
+index=(0);return smalltalk.send(smalltalk.send(self, "_currentPresentation", []), "_slidesDo_", [(function(aSlide){index=((($receiver = index).klass === smalltalk.Number) ? $receiver +(1) : smalltalk.send($receiver, "__plus", [(1)]));return (function($rec){smalltalk.send($rec, "_value_", [index]);return smalltalk.send($rec, "_with_", [smalltalk.send(aSlide, "_title", [])]);})(smalltalk.send(html, "_option", []));})]);})]);
+return self;},
+args: [],
+source: unescape('updateSlideSelect%0A%09slideSelect%20contents%3A%20%5B%3Ahtml%7C%20%7Cindex%7C%0A%09%09%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09index%20%3A%3D%200.%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%20%20%20%20%20%20%20%09%09self%20currentPresentation%20slidesDo%3A%20%5B%20%3AaSlide%7C%20%20%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%09%09index%20%3A%3D%20index%20+%201.%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%09%09html%20option%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%20%20%20%20%09%09%09%09%09value%3A%20index%3B%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%09%09%09%09%09%09%09%09with%3A%20aSlide%20title%20%5D%20%5D.'),
+messageSends: ["contents:", "slidesDo:", "currentPresentation", unescape("+"), "value:", "with:", "title", "option"],
+referencedClasses: []
+}),
+smalltalk.PresentationNavigator);
+
 
 smalltalk.addMethod(
 unescape('_initialize'),

examples/presentation/st/Presentation.st

@@ -22,6 +22,10 @@ cssClass
 
 backgroundColor
 	^'#555'
+!
+
+title
+	^ self id
 ! !
 
 !Slide methodsFor: 'actions'!
@@ -151,6 +155,20 @@ checkHash
 		self currentSlide = slide ifFalse: [
 			self currentSlide: slide.
 			slide show]]
+!
+
+moveAt: anInteger
+	| next |
+	next := self slides 
+			at: anInteger
+			ifAbsent: [nil].
+	next ifNotNil: [currentSlide := next. next show]
+! !
+
+!Presentation methodsFor: 'enumerating'!
+
+slidesDo: aBlockWithArg
+	self slides do: [:aSlide| aBlockWithArg value: aSlide].
 ! !
 
 !Presentation methodsFor: 'initialization'!
@@ -1080,7 +1098,7 @@ renderSlideOn: html
 ! !
 
 Widget subclass: #PresentationNavigator
-	instanceVariableNames: 'presentationBrush currentPresentation'
+	instanceVariableNames: 'presentationBrush currentPresentation slideSelect'
 	category: 'Presentation'!
 
 !PresentationNavigator methodsFor: 'accessing'!
@@ -1136,6 +1154,7 @@ selectPresentationNamed: aString
 	|presentationClass|
 	presentationClass :=  (Smalltalk current at: aString).
 	presentationClass ifNotNil: [ self selectPresentation: presentationClass ].
+	self updateSlideSelect.
 !
 
 previousSlide
@@ -1149,6 +1168,11 @@ nextSlide
 reload
 	self currentPresentation: self currentPresentation class new.
 	self renderCurrentPresentation.
+!
+
+selectSlideAt: anInteger
+	Transcript show: anInteger.
+	self currentPresentation moveAt: anInteger
 ! !
 
 !PresentationNavigator methodsFor: 'hash'!
@@ -1216,7 +1240,8 @@ renderOn: html
 		id: 'navigator';
 		with: [	self
 					renderToolsOn: html;
-					renderPresentationSelectOn: html	].
+					renderPresentationSelectOn: html;
+                      			renderSlideSelectOn: html].
 
 	presentationBrush := html div 
 							id: 'presentation';
@@ -1231,6 +1256,22 @@ renderCurrentPresentation
                                      	renderOn: html;
                                      	checkHash.
         ].
+!
+
+renderSlideSelectOn: html
+	slideSelect := html select.
+	slideSelect onChange: [ self  selectSlideAt:  slideSelect asJQuery val ].
+	self updateSlideSelect.
+!
+
+updateSlideSelect
+	slideSelect contents: [:html| |index|
+		                       		index := 0.
+                		       		self currentPresentation slidesDo: [ :aSlide|  
+                                		                                    				index := index + 1.
+                                                		                    				html option
+                                                                		    					value: index;
+                                                            								with: aSlide title ] ].
 ! !
 
 !PresentationNavigator class methodsFor: 'initialize'!