From c0158855ddfa34f4706c5190e6d3da3972e1b901 Mon Sep 17 00:00:00 2001
From: Molly Lloyd <mollymerp@users.noreply.github.com>
Date: Mon, 12 Feb 2018 09:39:44 -0800
Subject: [PATCH] add Map#isZooming method (#6128)

* add Map#isZooming method

* initialize Camera#zooming
---
 src/ui/camera.js         | 11 +++++++++++
 test/unit/ui/map.test.js | 17 +++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/src/ui/camera.js b/src/ui/camera.js
index 9ff26fe1c73..bcd3b5ae708 100644
--- a/src/ui/camera.js
+++ b/src/ui/camera.js
@@ -83,6 +83,7 @@ class Camera extends Evented {
     constructor(transform: Transform, options: {bearingSnap: number}) {
         super();
         this.moving = false;
+        this.zooming = false;
         this.transform = transform;
         this._bearingSnap = options.bearingSnap;
     }
@@ -858,6 +859,16 @@ class Camera extends Evented {
         return this.moving;
     }
 
+    /**
+     * Returns a Boolean indicating whether the camera is zooming.
+     *
+     * @memberof Map#
+     * @returns A Boolean indicating whether the camera is zooming.
+     */
+    isZooming(): boolean {
+        return this.zooming;
+    }
+
     /**
      * Stops any animated transition underway.
      *
diff --git a/test/unit/ui/map.test.js b/test/unit/ui/map.test.js
index f75452d9797..ea58a00304d 100755
--- a/test/unit/ui/map.test.js
+++ b/test/unit/ui/map.test.js
@@ -1268,6 +1268,23 @@ test('Map', (t) => {
         map.zoomTo(5, { duration: 0 });
     });
 
+    t.test('Map#isZooming', (t) => {
+        t.plan(3);
+        const map = createMap();
+
+        t.equal(map.isZooming(), false, 'false before zooming');
+
+        map.on('zoomstart', () => {
+            t.equal(map.isZooming(), true, 'true on zoomstart');
+        });
+
+        map.on('zoomend', () => {
+            t.equal(map.isZooming(), false, 'false on zoomend');
+        });
+
+        map.zoomTo(5, { duration: 0 });
+    });
+
     t.end();
 });