Work on refactoring measurements out of Lesion Tracker package

- Removed AssociatedStudies Collection
- Measurement API is generated from configuration files
- Data exchange methods are defined in configuration

Packages/ohif-viewerbase/client/components/viewer/studyTimepointBrowser/studyTimepointStudy.js

@@ -0,0 +1,113 @@
+Template.studyTimepointStudy.onCreated(() => {
+    const instance = Template.instance();
+
+    // Set the current study as selected in the studies list
+    instance.select = (isQuickSwitch=false) => {
+        const $study = instance.$('.studyTimepointStudy');
+        const $timepoint = $study.closest('.studyTimepoint');
+
+        const selectionChanged = {
+            selection: [$study[0]],
+            studyInstanceUid: instance.data.study.studyInstanceUid,
+            isQuickSwitch
+        };
+
+        $timepoint.trigger('selectionChanged', selectionChanged);
+    };
+});
+
+// Initialize the study wrapper max-height to enable CSS transition
+Template.studyTimepointStudy.onRendered(() => {
+    const instance = Template.instance();
+    const $study = instance.$('.studyTimepointStudy');
+    const $thumbnails = instance.$('.studyTimepointThumbnails');
+    $study.addClass('active');
+    $thumbnails.css('max-height', $thumbnails.height());
+    $study.removeClass('active');
+
+    // Here we add, remove, and add the active class again because this way
+    // the max-height animation appears smooth to the user.
+    if (instance.data.active) {
+        Meteor.setTimeout(() => {
+            $study.addClass('active');
+        }, 1);
+    }
+});
+
+Template.studyTimepointStudy.helpers({
+    modalities() {
+        const instance = Template.instance();
+        let modalities = instance.data.study.modalities;
+
+        // Replace backslashes with spaces
+        return modalities.replace(/\\/g, ' ');
+    },
+
+    modalityStyle() {
+        // Responsively styles the Modality Acronyms for studies
+        // with more than one modality
+        const instance = Template.instance();
+        const modalities = instance.data.study.modalities || 'UN';
+        const numModalities = modalities.split(/\\/g).length;
+
+        if (numModalities === 1) {
+            // If we have only one modality, it should take up the whole
+            // div.
+            return 'font-size: 1vw';
+        } else if (numModalities === 2) {
+            // If we have two, let them sit side-by-side
+            return 'font-size: 0.75vw';
+        } else {
+            // If we have more than two modalities, change the line
+            // height to display multiple rows, depending on the number
+            // of modalities we need to display.
+            const lineHeight = Math.ceil(numModalities / 2) * 1.2;
+            return 'line-height: ' + lineHeight + 'vh';
+        }
+    }
+});
+
+Template.studyTimepointStudy.events({
+    // Recalculates the timepoint height to make CSS transition smoother
+    'transitionend .studyTimepointThumbnails'(event, instance) {
+        if (event.target === event.currentTarget) {
+            $(event.currentTarget).closest('.studyTimepoint').trigger('displayStateChanged');
+        }
+    },
+
+    // Transfers the active state to the current study
+    'click .studyQuickSwitchTimepoint .studyModality'(event, instance) {
+        instance.select(true);
+    },
+
+    // Changes the current study selection for the clicked study
+    'click .studyModality'(event, instance) {
+        const $study = $(event.currentTarget).closest('.studyTimepointStudy');
+
+        const studyData = instance.data.study;
+        const studyInstanceUid = studyData.studyInstanceUid;
+
+        const isQuickSwitch = !_.isUndefined(instance.data.viewportIndex);
+
+        // Check if the study already has series data,
+        // and if not, retrieve it.
+        if (!studyData.seriesList) {
+            const alreadyLoaded = ViewerStudies.findOne({
+                studyInstanceUid
+            });
+
+            if (!alreadyLoaded) {
+                $study.addClass('loading');
+                getStudyMetadata(studyInstanceUid, study => {
+                    study.displaySets = createStacks(study);
+                    ViewerStudies.insert(study);
+                    instance.select(isQuickSwitch);
+                });
+            } else {
+                studyData.seriesList = alreadyLoaded.seriesList;
+            }
+        } else {
+            instance.select(isQuickSwitch);
+        }
+    }
+});