LT-275: Creating measure flow component common section

Packages/ohif-core/client/helpers/logical.js

@@ -0,0 +1,69 @@
+import { _ } from 'meteor/underscore';
+import { Template } from 'meteor/templating';
+
+/**
+ * Global Blaze UI helpers to work with logical operations
+ */
+
+// Convert any value into a boolean value
+Template.registerHelper('bool', value => {
+    return !!value;
+});
+
+// Check if two values are identical
+Template.registerHelper('eq', (a, b) => {
+    return a === b;
+});
+
+// Check if two values are different
+Template.registerHelper('ne', (a, b) => {
+    return a !== b;
+});
+
+// Check if the first value is greater than the second one
+Template.registerHelper('gt', (a, b) => {
+    return a > b;
+});
+
+// Check if the first value is lesser than the second one
+Template.registerHelper('lt', (a, b) => {
+    return a < b;
+});
+
+// Check if the first value is greater than or equals the second one
+Template.registerHelper('gte', (a, b) => {
+    return a >= b;
+});
+
+// Check if the first value is lesser than or equals the second one
+Template.registerHelper('lte', (a, b) => {
+    return a <= b;
+});
+
+// Get the boolean negation for the given value
+Template.registerHelper('not', value => {
+    return !value;
+});
+
+// Check if all the given values are true
+Template.registerHelper('and', (...values) => {
+    let result = true;
+    _.each(_.initial(values, 1), value => value || (result = false));
+    return result;
+});
+
+// Check if one of the given values is true
+Template.registerHelper('or', (...values) => {
+    let result = false;
+    _.each(_.initial(values, 1), value => value && (result = true));
+    return result;
+});
+
+// Return the second parameter if the first is true or the third if it's false
+Template.registerHelper('valueIf', (condition, valueIfTrue, valueIfFalse) => {
+    if (condition) {
+        return valueIfTrue;
+    }
+
+    return valueIfFalse;
+});