chore: Remove background color logic

* develop: (56 commits)
  chore: Fix unit tests
  chore(deps): update all patch dependencies
  chore: Update docs
  Update docs
  New Mermaid Live Editor for Confluence Cloud (#4814)
  Update link to Discourse theme component (#4811)
  Update flowchart.md (#4810)
  chore: remove unneeded `CommomDB`
  chore: Update docs
  "CSS" instead of "css" in flowchart.md (#4797)
  Update CONTRIBUTING.md
  Update CONTRIBUTING.md
  fix: typos (#4801)
  chore: Align with convention
  chore: Add JSDoc to apply in sequenceDB
  refactor: Tidy up direction handling
  chore: Fix flowchart arrow
  chore: Add test to verify activate
  chore: Update tests snapshot
  fix: #4691 Align arrowheads properly in sequenceDiagram
  ...

packages/mermaid/src/dagre-wrapper/edges.js

@@ -522,6 +522,7 @@ export const insertEdge = function (elem, e, edge, clusterDb, diagramType, graph
     default:
       strokeClasses = '';
   }
+
   switch (edge.pattern) {
     case 'solid':
       strokeClasses += ' edge-pattern-solid';
@@ -586,6 +587,9 @@ export const insertEdge = function (elem, e, edge, clusterDb, diagramType, graph
     case 'extension':
       svgPath.attr('marker-start', 'url(' + url + '#' + diagramType + '-extensionStart' + ')');
       break;
+    case 'realization':
+      svgPath.attr('marker-start', 'url(' + url + '#' + diagramType + '-realizationStart' + ')');
+      break;
     case 'composition':
       svgPath.attr('marker-start', 'url(' + url + '#' + diagramType + '-compositionStart' + ')');
       break;
@@ -616,6 +620,9 @@ export const insertEdge = function (elem, e, edge, clusterDb, diagramType, graph
     case 'extension':
       svgPath.attr('marker-end', 'url(' + url + '#' + diagramType + '-extensionEnd' + ')');
       break;
+    case 'realization':
+      svgPath.attr('marker-end', 'url(' + url + '#' + diagramType + '-realizationEnd' + ')');
+      break;
     case 'composition':
       svgPath.attr('marker-end', 'url(' + url + '#' + diagramType + '-compositionEnd' + ')');
       break;

packages/mermaid/src/dagre-wrapper/markers.js

@@ -11,6 +11,7 @@ const insertMarkers = (elem, markerArray, type, id) => {
 
 const extension = (elem, type, id) => {
   log.trace('Making markers for ', id);
+
   elem
     .append('defs')
     .append('marker')
@@ -38,6 +39,36 @@ const extension = (elem, type, id) => {
     .attr('d', 'M 1,1 V 13 L18,7 Z'); // this is actual shape for arrowhead
 };
 
+const realization = (elem, type, id) => {
+  log.trace('Making markers for ', id);
+
+  elem
+    .append('defs')
+    .append('marker')
+    .attr('id', type + '-realizationStart')
+    .attr('class', 'marker realization ' + type)
+    .attr('refX', 18)
+    .attr('refY', 7)
+    .attr('markerWidth', 190)
+    .attr('markerHeight', 240)
+    .attr('orient', 'auto')
+    .append('path')
+    .attr('d', 'M 1,7 L18,13 V 1 Z');
+
+  elem
+    .append('defs')
+    .append('marker')
+    .attr('id', type + '-realizationEnd')
+    .attr('class', 'marker realization ' + type)
+    .attr('refX', 1)
+    .attr('refY', 7)
+    .attr('markerWidth', 20)
+    .attr('markerHeight', 28)
+    .attr('orient', 'auto')
+    .append('path')
+    .attr('d', 'M 1,1 V 13 L18,7 Z'); // this is actual shape for arrowhead
+};
+
 const composition = (elem, type) => {
   elem
     .append('defs')
@@ -282,6 +313,7 @@ const barb = (elem, type) => {
 // TODO rename the class diagram markers to something shape descriptive and semantic free
 const markers = {
   extension,
+  realization,
   composition,
   aggregation,
   dependency,

packages/mermaid/src/diagrams/class/classDb.ts

@@ -366,6 +366,7 @@ export const relationType = {
   COMPOSITION: 2,
   DEPENDENCY: 3,
   LOLLIPOP: 4,
+  REALIZATION: 5,
 };
 
 const setupToolTips = function (element: Element) {

packages/mermaid/src/diagrams/class/classDiagram.spec.ts

@@ -1193,16 +1193,18 @@ describe('given a class diagram with relationships, ', function () {
     });
 
     it('should handle relation definitions with type only on right side', function () {
-      const str = 'classDiagram\n' + 'Class1 --|> Class02';
+      const str = 'classDiagram\n' + 'Class1 --|> Class2';
 
       parser.parse(str);
 
       const relations = parser.yy.getRelations();
+      const class1 = parser.yy.getClass('Class1');
+      const class2 = parser.yy.getClass('Class2');
 
-      expect(parser.yy.getClass('Class1').id).toBe('Class1');
+      expect(class1.id).toBe('Class1');
-      expect(parser.yy.getClass('Class02').id).toBe('Class02');
+      expect(class2.id).toBe('Class2');
       expect(relations[0].relation.type1).toBe('none');
-      expect(relations[0].relation.type2).toBe(classDb.relationType.EXTENSION);
+      expect(relations[0].relation.type2).toBe(classDb.relationType.REALIZATION);
       expect(relations[0].relation.lineType).toBe(classDb.lineType.LINE);
     });
 

packages/mermaid/src/diagrams/class/classRenderer-v2.ts

@@ -354,7 +354,7 @@ export const draw = async function (text: string, id: string, _version: string,
   await render(
     element,
     g,
-    ['aggregation', 'extension', 'composition', 'dependency', 'lollipop'],
+    ['aggregation', 'extension', 'realization', 'composition', 'dependency', 'lollipop'],
     'classDiagram',
     id
   );
@@ -406,6 +406,9 @@ function getArrowMarker(type: number) {
     case 4:
       marker = 'lollipop';
       break;
+    case 5:
+      marker = 'realization';
+      break;
     default:
       marker = 'none';
   }

packages/mermaid/src/diagrams/class/parser/classDiagram.jison

@@ -121,8 +121,17 @@ line was introduced with 'click'.
 <*>"_parent"                    return 'LINK_TARGET';
 <*>"_top"                       return 'LINK_TARGET';
 
+<bqstring>[`]           this.popState();
+<bqstring>[^`]+         return "BQUOTE_STR";
+<*>[`]                  this.begin("bqstring");
+
+<*>"_self"              return 'LINK_TARGET';
+<*>"_blank"             return 'LINK_TARGET';
+<*>"_parent"            return 'LINK_TARGET';
+<*>"_top"               return 'LINK_TARGET';
+
 <*>\s*\<\|              return 'EXTENSION';
-<*>\s*\|\>                      return 'EXTENSION';
+<*>\s*\|\>              return 'REALIZATION';
 <*>\s*\>                return 'DEPENDENCY';
 <*>\s*\<                return 'DEPENDENCY';
 <*>\s*\*                return 'COMPOSITION';
@@ -368,6 +377,7 @@ relation
 relationType
     : AGGREGATION { $$=yy.relationType.AGGREGATION;}
     | EXTENSION   { $$=yy.relationType.EXTENSION;}
+    | REALIZATION { $$=yy.relationType.REALIZATION;}
     | COMPOSITION { $$=yy.relationType.COMPOSITION;}
     | DEPENDENCY  { $$=yy.relationType.DEPENDENCY;}
     | LOLLIPOP    { $$=yy.relationType.LOLLIPOP;}

packages/mermaid/src/diagrams/class/styles.js

@@ -120,6 +120,18 @@ g.classGroup line {
   stroke-width: 1;
 }
 
+#realizationStart, .realization {
+  fill: transparent !important;
+  stroke: ${options.lineColor} !important;
+  stroke-width: 1;
+}
+
+#realizationEnd, .realization {
+  fill: transparent !important;
+  stroke: ${options.lineColor} !important;
+  stroke-width: 1;
+}
+
 #aggregationStart, .aggregation {
   fill: transparent !important;
   stroke: ${options.lineColor} !important;

packages/mermaid/src/diagrams/class/svgDraw.js

@@ -9,6 +9,8 @@ export const drawEdge = function (elem, path, relation, conf, diagObj) {
     switch (type) {
       case diagObj.db.relationType.AGGREGATION:
         return 'aggregation';
+      case diagObj.db.relationType.REALIZATION:
+        return 'realization';
       case diagObj.db.relationType.EXTENSION:
         return 'extension';
       case diagObj.db.relationType.COMPOSITION: