From a05669966e0f949a8bef92b480de688ba2711e09 Mon Sep 17 00:00:00 2001
From: OffrayLuna <offray.luna@mutabit.com>
Date: Mon, 31 Jul 2017 18:27:57 +0000
Subject: [PATCH] Extending special cases for generic urls plus the urls for
 playgrounds.

---
 src/Grafoscopio/GrafoscopioNode.class.st     | 47 ++++++++++++++++----
 src/Grafoscopio/GrafoscopioNotebook.class.st | 41 ++++++++++-------
 2 files changed, 64 insertions(+), 24 deletions(-)

diff --git a/src/Grafoscopio/GrafoscopioNode.class.st b/src/Grafoscopio/GrafoscopioNode.class.st
index d725273..2e02c07 100644
--- a/src/Grafoscopio/GrafoscopioNode.class.st
+++ b/src/Grafoscopio/GrafoscopioNode.class.st
@@ -229,7 +229,7 @@ GrafoscopioNode >> becomeDefaultTestTree [
 
 { #category : #initialization }
 GrafoscopioNode >> becomeDefaultTree [
-	"I create a starting tree for all grafoscopio notebooks with just one textual node"
+	"I create a starting tree for all Grafoscopio notebooks with just one textual node as child."
 	| node1 |
 	self level: 0.
 	self header: 'Arbol principal'.	
@@ -311,6 +311,13 @@ GrafoscopioNode >> copyToClipboard [
 	
 ]
 
+{ #category : #operation }
+GrafoscopioNode >> cryptoSignature [
+	"I return the SHA1SUM of the current tree. I'm used to test changes on the contents
+	and for traceability of how the document tree is converted to other formats, as markdown."
+	^ (SHA1 new hashMessage: self root flatten asSton) hex
+]
+
 { #category : #utility }
 GrafoscopioNode >> deleteReferencesToRoot: aRootNode [
 
@@ -518,6 +525,24 @@ GrafoscopioNode >> icon: aSymbol [
 	icon := aSymbol
 ]
 
+{ #category : #importing }
+GrafoscopioNode >> importLinkContent [
+	"I take the last link and import its contents in node body. "
+	self links last asUrl host = 'ws.stfx.eu' ifTrue: [ ^ self ].
+	self
+		body: (ZnClient new get: self links last).
+]
+
+{ #category : #importing }
+GrafoscopioNode >> importPlaygroundLink [
+	"I take the last link and import its contents in node body. 
+	Last links should be hosted in http://zn.stfx.eu/"
+	self links last asUrl host = 'ws.stfx.eu' ifFalse: [ ^ self ].
+	self
+		body: (ZnClient new get: self links last);
+		tagAs: 'código'.
+]
+
 { #category : #initialization }
 GrafoscopioNode >> initialize [
 	"I create a empty new node"
@@ -687,18 +712,22 @@ GrafoscopioNode >> metadata [
 { #category : #exporting }
 GrafoscopioNode >> metadataAsYamlIn: markdownStream [
 	"I convert the first '%metadata' node into a YAML preamble to be used by Pandoc exportation."
-	self metadata ifNil: [ ^ self ].
 	markdownStream
-		nextPutAll: '---';
+		nextPutAll: '---'; 
+		lf;
+		nextPutAll: 'exportedFrom: ', self cryptoSignature;
 		lf.
-	self metadata
-		keysAndValuesDo: [ :k :v | 
-			markdownStream
-				nextPutAll: (k , ': ' , v asString) withInternetLineEndings;
-				nextPutAll: String cr ].
+	self metadata 
+		ifNotNil: [
+			self metadata
+			keysAndValuesDo: [ :k :v | 
+				markdownStream
+					nextPutAll: (k , ': ' , v asString) withInternetLineEndings;
+					nextPutAll: String cr ]].
 	markdownStream
 		nextPutAll: '---';
-		lf; lf
+		lf; 
+		lf
 ]
 
 { #category : #movement }
diff --git a/src/Grafoscopio/GrafoscopioNotebook.class.st b/src/Grafoscopio/GrafoscopioNotebook.class.st
index f0ec2a7..61f50d0 100644
--- a/src/Grafoscopio/GrafoscopioNotebook.class.st
+++ b/src/Grafoscopio/GrafoscopioNotebook.class.st
@@ -47,7 +47,7 @@ GrafoscopioNotebook class >> defaultSpec [
 							bc add: #body; add: #links height: self toolbarHeight ]]]
 ]
 
-{ #category : #'as yet unclassified' }
+{ #category : #'instance creation' }
 GrafoscopioNotebook class >> newDefault [
 	^ self new.
 ]
@@ -95,6 +95,16 @@ GrafoscopioNotebook >> copyNodeToClipboard [
 	self notebookContent: notebook.
 ]
 
+{ #category : #utilities }
+GrafoscopioNotebook >> cryptoSignature [
+	"I return the cryptographic signature of the workingFile where this notebook is being stored.
+	I'm useful for data provenance and traceability of derivated files related with this source
+	notebook."
+	self workingFile ifNil: [ ^ self ].
+	self workingFile contents = '' ifTrue: [ ^ self ]. 
+	^ (SHA1 new hashMessage: (self workingFile contents)) hex.
+]
+
 { #category : #'editing nodes' }
 GrafoscopioNotebook >> cutNodeToClipboard [
 	self copyNodeToClipboard; removeNode.
@@ -122,7 +132,7 @@ GrafoscopioNotebook >> debugWithSelector: aSymbol [
 	^ (nodeContent perform: aSymbol asSymbol) inspect
 ]
 
-{ #category : #'as yet unclassified' }
+{ #category : #utilities }
 GrafoscopioNotebook >> defineDebugMessageUI [
 	| answer |
 	answer := UIManager default 
@@ -234,6 +244,16 @@ GrafoscopioNotebook >> header: anObject [
 	header := anObject
 ]
 
+{ #category : #initialization }
+GrafoscopioNotebook >> initialize [	
+	super initialize.
+	self
+		notebook: (GrafoscopioNode new becomeDefaultTree);
+		title: ' New | Grafoscopio notebook'.
+	self notebookContent: self notebook.
+
+]
+
 { #category : #initialization }
 GrafoscopioNotebook >> initializePresenter [
 	tree whenHighlightedItemChanged: [ :item | 
@@ -415,14 +435,8 @@ GrafoscopioNotebook >> okToChange [
 { #category : #persistence }
 GrafoscopioNotebook >> openDefault [
 "I open a new default notebook"
-							
-	| nb |
-	nb := self class new.
-	nb 
-		notebook: (GrafoscopioNode new becomeDefaultTree);
-		title: ' New | Grafoscopio notebook';
-		notebookContent: nb notebook.
-	^ nb openWithSpec.
+
+	^ self class new openWithSpec.
 ]
 
 { #category : #persistence }
@@ -774,11 +788,8 @@ GrafoscopioNotebook >> updateForSpecialLinks [
 	currentNode := tree highlightedItem.
 	currentNode ifNil: [ ^ self ].
 	nodeContent := currentNode content.
-	nodeContent links last isAsciiString ifFalse: [ ^ self ].
-	nodeContent links last asUrl host = 'ws.stfx.eu' ifFalse: [ ^ self ].
-	nodeContent
-		body: (ZnClient new get: nodeContent links last);
-		tagAs: 'código'.
+	nodeContent importPlaygroundLink.
+	nodeContent importLinkContent.
 	self updateBodyFor: currentNode
 ]