AWV-1: Adding navigation of display sets

Packages/ohif-core/client/lib/index.js

@@ -2,3 +2,4 @@ import './blaze.js';
 import './string.js';
 import './ui.js';
 import './user.js';
+import './viewer.js';

Packages/ohif-core/client/lib/viewer.js

@@ -0,0 +1,45 @@
+import { OHIF } from 'meteor/ohif:core';
+
+OHIF.viewer = {};
+
+// Move display sets forward or backward in the selected viewport
+OHIF.viewer.moveDisplaySet = isNext => {
+    // Get the selected viewport index
+    const viewportIndex = Session.get('activeViewport');
+
+    // Get the selected viewport data
+    const viewportData = window.layoutManager.viewportData[viewportIndex];
+
+    // Get the current study
+    const currentStudy = _.findWhere(window.layoutManager.studies, {
+        studyInstanceUid: viewportData.studyInstanceUid
+    }) || window.layoutManager.studies[0];
+
+    // Get the display sets
+    const displaySets = currentStudy.displaySets;
+
+    // Get the current display set
+    const currentDisplaySet = _.findWhere(displaySets, {
+        displaySetInstanceUid: viewportData.displaySetInstanceUid
+    });
+
+    // Get the new index and ensure that it will exists in display sets
+    let newIndex = _.indexOf(displaySets, currentDisplaySet);
+    if (isNext) {
+        newIndex++;
+        if (newIndex >= displaySets.length) {
+            newIndex = 0;
+        }
+    } else {
+        newIndex--;
+        if (newIndex < 0) {
+            newIndex = displaySets.length - 1;
+        }
+    }
+
+    // Get the display set data for the new index
+    const newDisplaySetData = displaySets[newIndex];
+
+    // Rerender the viewport using the new display set data
+    window.layoutManager.rerenderViewportWithNewDisplaySet(viewportIndex, newDisplaySetData);
+};