1 files changed, 66 insertions, 0 deletions
diff --git a/ext/bg/js/profile-conditions.js b/ext/bg/js/profile-conditions.js
index a0710bd1..c0f5d3f5 100644
--- a/ext/bg/js/profile-conditions.js
+++ b/ext/bg/js/profile-conditions.js
@@ -36,6 +36,24 @@ function _profileConditionTestDomainList(url, domainList) {
     return false;
 }
 
+const _profileModifierKeys = [
+    {optionValue: 'alt',   name: 'Alt'},
+    {optionValue: 'ctrl',  name: 'Ctrl'},
+    {optionValue: 'shift', name: 'Shift'}
+];
+
+if (!hasOwn(window, 'netscape')) {
+    _profileModifierKeys.push({optionValue: 'meta',  name: 'Meta'});
+}
+
+const _profileModifierValueToName = new Map(
+    _profileModifierKeys.map(({optionValue, name}) => [optionValue, name])
+);
+
+const _profileModifierNameToValue = new Map(
+    _profileModifierKeys.map(({optionValue, name}) => [name, optionValue])
+);
+
 const profileConditionsDescriptor = {
     popupLevel: {
         name: 'Popup Level',
@@ -100,5 +118,53 @@ const profileConditionsDescriptor = {
                 test: ({url}, transformedOptionValue) => (transformedOptionValue !== null && transformedOptionValue.test(url))
             }
         }
+    },
+    modifierKeys: {
+        name: 'Modifier Keys',
+        description: 'Use profile depending on the active modifier keys.',
+        values: _profileModifierKeys,
+        defaultOperator: 'are',
+        operators: {
+            are: {
+                name: 'are',
+                placeholder: 'Press one or more modifier keys here',
+                defaultValue: '',
+                type: 'keyMulti',
+                transform: (optionValue) => optionValue
+                    .split(' + ')
+                    .filter((v) => v.length > 0)
+                    .map((v) => _profileModifierNameToValue.get(v)),
+                transformReverse: (transformedOptionValue) => transformedOptionValue
+                    .map((v) => _profileModifierValueToName.get(v))
+                    .join(' + '),
+                test: ({modifierKeys}, optionValue) => areSetsEqual(new Set(modifierKeys), new Set(optionValue))
+            },
+            areNot: {
+                name: 'are not',
+                placeholder: 'Press one or more modifier keys here',
+                defaultValue: '',
+                type: 'keyMulti',
+                transform: (optionValue) => optionValue
+                    .split(' + ')
+                    .filter((v) => v.length > 0)
+                    .map((v) => _profileModifierNameToValue.get(v)),
+                transformReverse: (transformedOptionValue) => transformedOptionValue
+                    .map((v) => _profileModifierValueToName.get(v))
+                    .join(' + '),
+                test: ({modifierKeys}, optionValue) => !areSetsEqual(new Set(modifierKeys), new Set(optionValue))
+            },
+            include: {
+                name: 'include',
+                type: 'select',
+                defaultValue: 'alt',
+                test: ({modifierKeys}, optionValue) => modifierKeys.includes(optionValue)
+            },
+            notInclude: {
+                name: 'don\'t include',
+                type: 'select',
+                defaultValue: 'alt',
+                test: ({modifierKeys}, optionValue) => !modifierKeys.includes(optionValue)
+            }
+        }
     }
 };