update the master branch to the latest

src/components/modal/mixins-scrollbar.js

@@ -0,0 +1,40 @@
+// used for Modal & $Spin & Drawer
+import { getScrollBarSize } from '../../utils/assist';
+export default {
+    methods: {
+        checkScrollBar () {
+            let fullWindowWidth = window.innerWidth;
+            if (!fullWindowWidth) { // workaround for missing window.innerWidth in IE8
+                const documentElementRect = document.documentElement.getBoundingClientRect();
+                fullWindowWidth = documentElementRect.right - Math.abs(documentElementRect.left);
+            }
+            this.bodyIsOverflowing = document.body.clientWidth < fullWindowWidth;
+            if (this.bodyIsOverflowing) {
+                this.scrollBarWidth = getScrollBarSize();
+            }
+        },
+        checkMaskInVisible () {
+            let masks = document.getElementsByClassName('ivu-modal-mask') || [];
+            return Array.from(masks).every(m => m.style.display === 'none' || m.classList.contains('fade-leave-to'));
+        },
+        setScrollBar () {
+            if (this.bodyIsOverflowing && this.scrollBarWidth !== undefined) {
+                document.body.style.paddingRight = `${this.scrollBarWidth}px`;
+            }
+        },
+        resetScrollBar () {
+            document.body.style.paddingRight = '';
+        },
+        addScrollEffect () {
+            this.checkScrollBar();
+            this.setScrollBar();
+            document.body.style.overflow = 'hidden';
+        },
+        removeScrollEffect() {
+            if (this.checkMaskInVisible()) {
+                document.body.style.overflow = '';
+                this.resetScrollBar();
+            }
+        }
+    }
+};