Redirect to software system home on hidden tabs

The tabs for context, components etc. are conditionally visible.
Redirect to the software systems home (one level up in the url path)
when visiting a page that is not visible.

src/main/kotlin/nl/avisi/structurizr/site/generatr/site/views/Redirect.kt

@@ -0,0 +1,11 @@
+package nl.avisi.structurizr.site.generatr.site.views
+
+import kotlinx.html.FlowContent
+import kotlinx.html.ScriptType
+import kotlinx.html.script
+
+fun FlowContent.redirectUp() {
+    script(type = ScriptType.textJavaScript) {
+        +"window.location.href = '../'"
+    }
+}

src/main/kotlin/nl/avisi/structurizr/site/generatr/site/views/SoftwareSystemComponentPage.kt

@@ -5,6 +5,9 @@ import nl.avisi.structurizr.site.generatr.site.model.SoftwareSystemComponentPage
 
 fun HTML.softwareSystemComponentPage(viewModel: SoftwareSystemComponentPageViewModel) {
     softwareSystemPage(viewModel) {
+        if (viewModel.diagrams.none())
+            redirectUp()
+
         viewModel.diagrams.forEach {
             diagram(it)
         }

src/main/kotlin/nl/avisi/structurizr/site/generatr/site/views/SoftwareSystemContainerPage.kt

@@ -5,6 +5,9 @@ import nl.avisi.structurizr.site.generatr.site.model.SoftwareSystemContainerPage
 
 fun HTML.softwareSystemContainerPage(viewModel: SoftwareSystemContainerPageViewModel) {
     softwareSystemPage(viewModel) {
+        if (viewModel.diagrams.none())
+            redirectUp()
+
         viewModel.diagrams.forEach {
             diagram(it)
         }

src/main/kotlin/nl/avisi/structurizr/site/generatr/site/views/SoftwareSystemContextPage.kt

@@ -5,6 +5,9 @@ import nl.avisi.structurizr.site.generatr.site.model.SoftwareSystemContextPageVi
 
 fun HTML.softwareSystemContextPage(viewModel: SoftwareSystemContextPageViewModel) {
     softwareSystemPage(viewModel) {
+        if (viewModel.diagrams.none())
+            redirectUp()
+
         viewModel.diagrams.forEach {
             diagram(it)
         }

src/main/kotlin/nl/avisi/structurizr/site/generatr/site/views/SoftwareSystemDecisionsPage.kt

@@ -5,6 +5,9 @@ import nl.avisi.structurizr.site.generatr.site.model.SoftwareSystemDecisionsPage
 
 fun HTML.softwareSystemDecisionsPage(viewModel: SoftwareSystemDecisionsPageViewModel) {
     softwareSystemPage(viewModel) {
+        if (viewModel.decisionsTable.bodyRows.none())
+            redirectUp()
+
         table(viewModel.decisionsTable)
     }
 }

src/main/kotlin/nl/avisi/structurizr/site/generatr/site/views/SoftwareSystemDeploymentPage.kt

@@ -5,6 +5,9 @@ import nl.avisi.structurizr.site.generatr.site.model.SoftwareSystemDeploymentPag
 
 fun HTML.softwareSystemDeploymentPage(viewModel: SoftwareSystemDeploymentPageViewModel) {
     softwareSystemPage(viewModel) {
+        if (viewModel.diagrams.none())
+            redirectUp()
+
         viewModel.diagrams.forEach {
             diagram(it)
         }

src/main/kotlin/nl/avisi/structurizr/site/generatr/site/views/SoftwareSystemSectionsPage.kt

@@ -5,6 +5,9 @@ import nl.avisi.structurizr.site.generatr.site.model.SoftwareSystemSectionsPageV
 
 fun HTML.softwareSystemSectionsPage(viewModel: SoftwareSystemSectionsPageViewModel) {
     softwareSystemPage(viewModel) {
+        if (viewModel.sectionsTable.bodyRows.none())
+            redirectUp()
+
         table(viewModel.sectionsTable)
     }
 }