1 files changed, 96 insertions, 0 deletions
diff --git a/packages/instant/src/components/animations/slide_up_and_down_animation.tsx b/packages/instant/src/components/animations/slide_up_and_down_animation.tsx
new file mode 100644
index 000000000..9c18e0933
--- /dev/null
+++ b/packages/instant/src/components/animations/slide_up_and_down_animation.tsx
@@ -0,0 +1,96 @@
+import * as React from 'react';
+
+import { keyframes, styled } from '../../style/theme';
+
+const slideKeyframeGenerator = (fromY: string, toY: string) => keyframes`
+    from {
+        position: relative;
+        top: ${fromY};
+    }
+
+    to {
+        position: relative;
+        top: ${toY};
+    }
+`;
+
+export interface SlideAnimationProps {
+    keyframes: string;
+    animationType: string;
+    animationDirection?: string;
+}
+
+export const SlideAnimation =
+    styled.div <
+    SlideAnimationProps >
+    `
+    animation-name: ${props => props.keyframes};
+    animation-duration: 0.3s;
+    animation-timing-function: ${props => props.animationType};
+    animation-delay: 0s;
+    animation-iteration-count: 1;
+    animation-fill-mode: ${props => props.animationDirection || 'none'};
+    position: relative;
+`;
+
+export interface SlideAnimationComponentProps {
+    downY: string;
+}
+
+export const SlideUpAnimationComponent: React.StatelessComponent<SlideAnimationComponentProps> = props => (
+    <SlideAnimation animationType="ease-in" keyframes={slideKeyframeGenerator(props.downY, '0px')}>
+        {props.children}
+    </SlideAnimation>
+);
+
+export const SlideDownAnimationComponent: React.StatelessComponent<SlideAnimationComponentProps> = props => (
+    <SlideAnimation
+        animationDirection="forwards"
+        animationType="cubic-bezier(0.25, 0.1, 0.25, 1)"
+        keyframes={slideKeyframeGenerator('0px', props.downY)}
+    >
+        {props.children}
+    </SlideAnimation>
+);
+
+export interface SlideUpAndDownAnimationProps extends SlideAnimationComponentProps {
+    delayMs: number;
+}
+
+enum SlideState {
+    Up = 'up',
+    Down = 'down',
+}
+interface SlideUpAndDownState {
+    slideState: SlideState;
+}
+
+export class SlideUpAndDownAnimation extends React.Component<SlideUpAndDownAnimationProps, SlideUpAndDownState> {
+    public state = {
+        slideState: SlideState.Up,
+    };
+
+    private _timeoutId?: number;
+    public render(): React.ReactNode {
+        return this._renderSlide();
+    }
+    public componentDidMount(): void {
+        this._timeoutId = window.setTimeout(() => {
+            this.setState({
+                slideState: SlideState.Down,
+            });
+        }, this.props.delayMs);
+
+        return;
+    }
+    public componentWillUnmount(): void {
+        if (this._timeoutId) {
+            window.clearTimeout(this._timeoutId);
+        }
+    }
+    private _renderSlide(): React.ReactNode {
+        const SlideComponent = this.state.slideState === 'up' ? SlideUpAnimationComponent : SlideDownAnimationComponent;
+
+        return <SlideComponent downY={this.props.downY}>{this.props.children}</SlideComponent>;
+    }
+}