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/imageControls/imageControls.js

@@ -0,0 +1,57 @@
+const slideTimeoutTime = 40;
+let slideTimeout;
+
+Template.imageControls.onRendered(() => {
+    const instance = Template.instance();
+
+    Meteor.defer(() => {
+        // Set the current imageSlider width to its parent's height
+        // (because webkit is stupid and can't style vertical sliders)
+        const $slider = instance.$('#imageSlider');
+        const $element = $slider.parents().eq(2).siblings('.imageViewerViewport');
+        const viewportHeight = $element.height();
+
+        $slider.width(viewportHeight - 20);
+    });
+})
+
+Template.imageControls.events({
+    'keydown #imageSlider'(event) {
+        // We don't allow direct keyboard up/down input on the
+        // image sliders since the natural direction is reversed (0 is at the top)
+
+        // Prevent the browser's default behaviour (scrolling)
+        event.preventDefault();
+
+        // Store the KeyCodes in an object for readability
+        const keys = {
+            DOWN: 40,
+            UP: 38
+        };
+
+        if (event.which === keys.DOWN) {
+            OHIF.viewer.hotkeyFunctions.scrollDown();
+        } else if (event.which === keys.UP) {
+            OHIF.viewer.hotkeyFunctions.scrollUp();
+        }
+    },
+    'input #imageSlider, change #imageSlider'(event) {
+        // Note that we throttle requests to prevent the
+        // user's ultrafast scrolling from firing requests too quickly.
+        clearTimeout(slideTimeout);
+        slideTimeout = setTimeout(() => {
+            // Using the slider in an inactive viewport
+            // should cause that viewport to become active
+            const slider = $(event.currentTarget);
+            const newActiveElement = slider.parents().eq(2).siblings('.imageViewerViewport').get(0);
+            setActiveViewport(newActiveElement);
+
+            // Subtract 1 here since the slider goes from 1 to N images
+            // But the stack indexing starts at 0
+            const newImageIdIndex = parseInt(slider.val(), 10) - 1;
+            switchToImageByIndex(newImageIdIndex);
+        }, slideTimeoutTime);
+
+        return false;
+    }
+});