1 files changed, 63 insertions, 0 deletions
diff --git a/src/client/views/collections/CollectionNoteTakingViewDivider.tsx b/src/client/views/collections/CollectionNoteTakingViewDivider.tsx
new file mode 100644
index 000000000..7d31b3193
--- /dev/null
+++ b/src/client/views/collections/CollectionNoteTakingViewDivider.tsx
@@ -0,0 +1,63 @@
+import { action, observable } from 'mobx';
+import * as React from 'react';
+
+interface DividerProps {
+    index: number;
+    xMargin: number;
+    setColumnStartXCoords: (movementX: number, colIndex: number) => void;
+}
+
+export class CollectionNoteTakingViewDivider extends React.Component<DividerProps> {
+    @observable private isHoverActive = false;
+    @observable private isResizingActive = false;
+
+    @action
+    private registerResizing = (e: React.PointerEvent<HTMLDivElement>) => {
+        e.stopPropagation();
+        e.preventDefault();
+        window.removeEventListener('pointermove', this.onPointerMove);
+        window.removeEventListener('pointerup', this.onPointerUp);
+        window.addEventListener('pointermove', this.onPointerMove);
+        window.addEventListener('pointerup', this.onPointerUp);
+        this.isResizingActive = true;
+    };
+
+    @action
+    private onPointerUp = () => {
+        this.isResizingActive = false;
+        this.isHoverActive = false;
+        window.removeEventListener('pointermove', this.onPointerMove);
+        window.removeEventListener('pointerup', this.onPointerUp);
+    };
+
+    @action
+    onPointerMove = ({ movementX }: PointerEvent) => {
+        this.props.setColumnStartXCoords(movementX, this.props.index);
+    };
+
+    render() {
+        return (
+            <div
+                className="columnResizer"
+                style={{
+                    display: 'flex',
+                    alignItems: 'center',
+                    cursor: 'col-resize',
+                }}
+                onPointerEnter={action(() => (this.isHoverActive = true))}
+                onPointerLeave={action(() => !this.isResizingActive && (this.isHoverActive = false))}>
+                <div
+                    className="columnResizer-handler"
+                    onPointerDown={e => this.registerResizing(e)}
+                    style={{
+                        height: '95%',
+                        width: 12,
+                        borderRight: '4px solid #282828',
+                        borderLeft: '4px solid #282828',
+                        margin: '0px 10px',
+                    }}
+                />
+            </div>
+        );
+    }
+}