#332 Add tips 27 and 28

src/ca/mcgill/cs/jetuml/JetUML.properties

@@ -166,7 +166,7 @@ warning.version.title=Diagram Version Migration
 files.image.name=Image Files
 tips.jsons.directory=/tips
 tips.images.directory=/tip_images
-tips.quantity=26
+tips.quantity=28
 tips.button.next.text=Next Tip
 tips.button.previous.text=Previous Tip
 tips.button.close.text=Close

tipdata/tips/tip-27.json

@@ -0,0 +1,7 @@
+{ 
+  "title": "Adding Self-Calls in Sequence Diagrams",
+  "content": [ 
+    { "text": "JetUML supports self-calls in sequence diagrams. To create a self-call, select the Call Edge creation tool and drag the rubber band within an activation box." },
+  	{ "image": "tip27.png"}
+  ]
+}

tipdata/tips/tip-28.json

@@ -0,0 +1,9 @@
+{ 
+  "title": "Adding Constructor Calls in Sequence Diagrams",
+  "content": [ 
+    { "text": "With JetUML you can represent constructor calls in sequence diagrams. To add a constructor call, select the Call Edge creation tool and drag the rubber band from a source life line or activation box to the implicit parameter node." },
+    { "image": "tip28a.png"},
+    { "text": "The call will be shown with the label «create» and the implicit parameter will be positioned vertically aligned with the call. An activation box will be attached to the implicit parameter: use it to model calls that originate from the constructor." },
+    { "image": "tip28b.png"}
+  ]
+}