OHIF-48: Add pagination for worklist

Packages/worklist/client/components/worklistResult/worklistResult.html

@@ -92,6 +92,10 @@
             {{/each}}
             </tbody>
         </table>
+
+        <!-- Pagination -->
+        {{> worklistPagination }}
+
         {{#if session "showLoadingText"}}
             {{>loadingText}}
         {{ else }}

Packages/worklist/client/components/worklistResult/worklistResult.js

@@ -6,19 +6,37 @@ Template.worklistResult.helpers({
      * by Patient name and Study Date in Ascending order.
      */
     studies() {
-        const sortOption = Session.get('sortOption');
-        if (sortOption) {
-            return WorklistStudies.find({}, {
-                sort: sortOption
-            });
+        const instance = Template.instance();
+        let studies;
+        let sortOption = {
+            patientName: 1,
+            studyDate: 1
+        };
+
+        // Update sort option if session is defined
+        if (Session.get('sortOption')) {
+            sortOption = Session.get('sortOption');
         }
 
-        return WorklistStudies.find({}, {
-            sort: {
-                patientName: 1,
-                studyDate: 1
-            }
-        });
+        // Pagination parameters
+        const rowsPerPage = instance.rowsPerPage.get();
+        const currentPage = instance.currentPage.get();
+        const offset = rowsPerPage * currentPage;
+        const limit = offset + rowsPerPage;
+
+        studies = WorklistStudies.find({}, {
+            sort: sortOption
+        }).fetch();
+
+        if (!studies) {
+            return;
+        }
+
+        // Update record count
+        instance.recordCount.set(studies.length);
+
+        // Limit studies
+        return studies.slice(offset, limit);
     },
 
     numberOfStudies() {
@@ -163,6 +181,15 @@ Template.worklistResult.onCreated(() => {
     instance.sortOption = new ReactiveVar();
     instance.sortingColumns = new ReactiveDict();
 
+    // Pagination parameters
+
+    // Rows per page is 25 as default
+    instance.rowsPerPage = new ReactiveVar(25);
+
+    // Set currentPage indexed 0
+    instance.currentPage = new ReactiveVar(0);
+    instance.recordCount = new ReactiveVar();
+
     // Set sortOption
     const sortOptionSession = Session.get('sortOption');
     if (sortOptionSession) {