SONAR-9792 Fix sidebar position with a notification

1 files changed, 67 insertions, 0 deletions

diff --git a/server/sonar-web/src/main/js/components/common/ScreenPositionHelper.tsx b/server/sonar-web/src/main/js/components/common/ScreenPositionHelper.tsx
new file mode 100644
index 00000000000..00f8f375766
--- /dev/null
+++ b/server/sonar-web/src/main/js/components/common/ScreenPositionHelper.tsx
@@ -0,0 +1,67 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2017 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+import * as React from 'react';
+import { throttle } from 'lodash';
+
+interface Props {
+  className?: string;
+  children: (position: { top: number; left: number }) => React.ReactElement<any>;
+}
+
+interface State {
+  position: { top: number; left: number };
+}
+
+export default class ScreenPositionHelper extends React.PureComponent<Props, State> {
+  container: HTMLDivElement;
+  throttledUpdatePosition: () => void;
+
+  constructor(props: Props) {
+    super(props);
+    this.state = { position: { top: 0, left: 0 } };
+    this.throttledUpdatePosition = throttle(this.updatePosition, 100);
+  }
+
+  componentDidMount() {
+    this.updatePosition();
+    window.addEventListener('resize', this.throttledUpdatePosition);
+  }
+
+  componentWillUnmount() {
+    window.removeEventListener('resize', this.throttledUpdatePosition);
+  }
+
+  updatePosition = () => {
+    const containerPos = this.container.getBoundingClientRect();
+    this.setState({
+      position: { top: window.scrollY + containerPos.top, left: window.scrollX + containerPos.left }
+    });
+  };
+
+  render() {
+    return (
+      <div
+        className={this.props.className}
+        ref={container => (this.container = container as HTMLDivElement)}>
+        {this.props.children(this.state.position)}
+      </div>
+    );
+  }
+}