PlantUML view now shows links vertically

This commit changes the layout of the graphs PlantUML renders from a
horizontal layout to a vertical one. This improves readability, in
particular in cases where an element is linked to a lot of others.
Previously, the diagram was cut off after a certain number of pixels
and therefore not fully visible. It was also difficult to navigate
the diagram.

Change-Id: I54f28590fcc7fb0c0a32de0c7c2734aadbf4e310

5 files changed, 14 insertions, 9 deletions

diff --git a/bundles/org.eclipse.capra.ui.plantuml/src/org/eclipse/capra/ui/plantuml/VisualizationHelper.xtend b/bundles/org.eclipse.capra.ui.plantuml/src/org/eclipse/capra/ui/plantuml/VisualizationHelper.xtend
index 857af6ea..c9c29128 100644
--- a/bundles/org.eclipse.capra.ui.plantuml/src/org/eclipse/capra/ui/plantuml/VisualizationHelper.xtend
+++ b/bundles/org.eclipse.capra.ui.plantuml/src/org/eclipse/capra/ui/plantuml/VisualizationHelper.xtend
@@ -33,6 +33,7 @@ class VisualizationHelper {
 	var helper = new Connections(connections, selectedObjects, artifactModel);
 	'''
 	@startuml
+	left to right direction
 	object "«helper.originLabel()»«IF helper.originHasLocation()» [[«helper.originLocation().replaceAll(" ", "%20")» (Go to)]]«ENDIF»" as «helper.originId()» #pink
 	«FOR id:helper.objectIdsWithoutOrigin()»
 	object "«helper.label(id)»«IF helper.hasLocation(id)» [[«helper.location(id).replaceAll(" ", "%20")» (Go to)]]«ENDIF»" as «id»
diff --git a/bundles/org.eclipse.capra.ui.plantuml/xtend-gen/org/eclipse/capra/ui/plantuml/.VisualizationHelper.xtendbin b/bundles/org.eclipse.capra.ui.plantuml/xtend-gen/org/eclipse/capra/ui/plantuml/.VisualizationHelper.xtendbin
index 28d8e8d6..f63143ca 100644
--- a/bundles/org.eclipse.capra.ui.plantuml/xtend-gen/org/eclipse/capra/ui/plantuml/.VisualizationHelper.xtendbin
+++ b/bundles/org.eclipse.capra.ui.plantuml/xtend-gen/org/eclipse/capra/ui/plantuml/.VisualizationHelper.xtendbin
diff --git a/bundles/org.eclipse.capra.ui.plantuml/xtend-gen/org/eclipse/capra/ui/plantuml/VisualizationHelper.java b/bundles/org.eclipse.capra.ui.plantuml/xtend-gen/org/eclipse/capra/ui/plantuml/VisualizationHelper.java
index 41f834ec..55099679 100644
--- a/bundles/org.eclipse.capra.ui.plantuml/xtend-gen/org/eclipse/capra/ui/plantuml/VisualizationHelper.java
+++ b/bundles/org.eclipse.capra.ui.plantuml/xtend-gen/org/eclipse/capra/ui/plantuml/VisualizationHelper.java
@@ -89,6 +89,8 @@ public class VisualizationHelper {
       StringConcatenation _builder = new StringConcatenation();
       _builder.append("@startuml");
       _builder.newLine();
+      _builder.append("left to right direction");
+      _builder.newLine();
       _builder.append("object \"");
       String _originLabel = helper.originLabel();
       _builder.append(_originLabel);
diff --git a/tests/org.eclipse.capra.handler.uml.tests/src/org/eclipse/capra/handler/uml/tests/TestUMLInternalLinks.java b/tests/org.eclipse.capra.handler.uml.tests/src/org/eclipse/capra/handler/uml/tests/TestUMLInternalLinks.java
index 0297c969..e0d5392c 100644
--- a/tests/org.eclipse.capra.handler.uml.tests/src/org/eclipse/capra/handler/uml/tests/TestUMLInternalLinks.java
+++ b/tests/org.eclipse.capra.handler.uml.tests/src/org/eclipse/capra/handler/uml/tests/TestUMLInternalLinks.java
@@ -54,8 +54,8 @@ public class TestUMLInternalLinks {
 
 	private static final String TEST_PROJECT_NAME = "TestProject";
 
-	private static final String EXPECTED_TEXT_FOR_INTERNAL_LINKS = "@startuml\n" + "object \"A : Class\" as o0 #pink\n"
-			+ "object \"B : Class\" as o1\n" + "object \"C : Class\" as o2\n"
+	private static final String EXPECTED_TEXT_FOR_INTERNAL_LINKS = "@startuml\n" + "left to right direction\n"
+			+ "object \"A : Class\" as o0 #pink\n" + "object \"B : Class\" as o1\n" + "object \"C : Class\" as o2\n"
 			+ "o0--o1: A : Class B : Class : RelatedTo\n" + "o1--o2: true : Generalization\n" + "@enduml\n";
 
 	@Before
diff --git a/tests/org.eclipse.capra.testsuite/src/org/eclipse/capra/testsuite/TestGraphicalVisualization.java b/tests/org.eclipse.capra.testsuite/src/org/eclipse/capra/testsuite/TestGraphicalVisualization.java
index 47fb6b71..e3dbe14a 100644
--- a/tests/org.eclipse.capra.testsuite/src/org/eclipse/capra/testsuite/TestGraphicalVisualization.java
+++ b/tests/org.eclipse.capra.testsuite/src/org/eclipse/capra/testsuite/TestGraphicalVisualization.java
@@ -77,15 +77,17 @@ public class TestGraphicalVisualization {
 	private static final String LINE_SEPARATOR = System.lineSeparator();
 
 	private static final String EXPECTED_TEXT_FOR_DIRECT_CONNECTIONS = "@startuml" + LINE_SEPARATOR
-			+ "object \"A : EClass\" as o0 #pink" + LINE_SEPARATOR + "object \"B : EClass\" as o1" + LINE_SEPARATOR
-			+ "o0--o1: A : EClass B : EClass : RelatedTo" + LINE_SEPARATOR + "@enduml" + LINE_SEPARATOR;
+			+ "left to right direction" + LINE_SEPARATOR + "object \"A : EClass\" as o0 #pink" + LINE_SEPARATOR
+			+ "object \"B : EClass\" as o1" + LINE_SEPARATOR + "o0--o1: A : EClass B : EClass : RelatedTo"
+			+ LINE_SEPARATOR + "@enduml" + LINE_SEPARATOR;
 
 	private static final String EXPECTED_TEXT_FOR_TRANSITIVE_CONNECTIONS = "@startuml" + LINE_SEPARATOR
-			+ "object \"A : EClass\" as o0 #pink" + LINE_SEPARATOR + "object \"B : EClass\" as o1" + LINE_SEPARATOR
-			+ "object \"C : EClass\" as o2" + LINE_SEPARATOR + "o0--o1: A : EClass B : EClass : RelatedTo"
-			+ LINE_SEPARATOR + "o1--o2: B : EClass C : EClass : RelatedTo" + LINE_SEPARATOR + "@enduml"
-			+ LINE_SEPARATOR;
-	private static final String EXPECTED_TEXT_FOR_GOTO_LINKS = "@startuml" + LINE_SEPARATOR
+			+ "left to right direction" + LINE_SEPARATOR + "object \"A : EClass\" as o0 #pink" + LINE_SEPARATOR
+			+ "object \"B : EClass\" as o1" + LINE_SEPARATOR + "object \"C : EClass\" as o2" + LINE_SEPARATOR
+			+ "o0--o1: A : EClass B : EClass : RelatedTo" + LINE_SEPARATOR + "o1--o2: B : EClass C : EClass : RelatedTo"
+			+ LINE_SEPARATOR + "@enduml" + LINE_SEPARATOR;
+	private static final String EXPECTED_TEXT_FOR_GOTO_LINKS = "@startuml" + LINE_SEPARATOR + "left to right direction"
+			+ LINE_SEPARATOR
 			+ "object \"TestClass [[platform:/resource/TestProject_java/src/org/eclipse/capra/test/TestClass.java#org.eclipse.capra.test.TestClass (Go to)]]\" as o0 #pink"
 			+ LINE_SEPARATOR
 			+ "object \"CClass.c [[platform:/resource/TestProject_C/CClass.c#CClass.c (Go to)]]\" as o1"