From 9fc13b6819b64ef11a8e3d9f3d8be4d466f83fab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Paulo=20Lagoa=CC=81?= <paulo.lagoa@hitachivantara.com>
Date: Tue, 12 Nov 2024 15:21:10 +0000
Subject: [PATCH] feat(CanvasSidePanel): add resizable feature

---
 .../src/Canvas/SidePanel/SidePanel.tsx        |  26 ++++-
 .../src/Canvas/SidePanel/useResizable.tsx     | 107 ++++++++++++++++++
 2 files changed, 132 insertions(+), 1 deletion(-)
 create mode 100644 packages/pentaho/src/Canvas/SidePanel/useResizable.tsx

diff --git a/packages/pentaho/src/Canvas/SidePanel/SidePanel.tsx b/packages/pentaho/src/Canvas/SidePanel/SidePanel.tsx
index b7e0cade4e..ccd39cca50 100644
--- a/packages/pentaho/src/Canvas/SidePanel/SidePanel.tsx
+++ b/packages/pentaho/src/Canvas/SidePanel/SidePanel.tsx
@@ -1,3 +1,4 @@
+/* eslint-disable jsx-a11y/no-noninteractive-element-interactions */
 import { forwardRef } from "react";
 import {
   ExtractNames,
@@ -14,6 +15,7 @@ import { End } from "@hitachivantara/uikit-react-icons";
 import { HvCanvasPanelTab } from "../PanelTab";
 import { HvCanvasPanelTabs, HvCanvasPanelTabsProps } from "../PanelTabs";
 import { staticClasses, useClasses } from "./SidePanel.styles";
+import { useResizable } from "./useResizable";
 
 export { staticClasses as canvasSidePanelClasses };
 
@@ -49,6 +51,8 @@ export interface HvCanvasSidePanelProps
   ) => void;
   /** An object containing all the labels. */
   labels?: Partial<typeof DEFAULT_LABELS>;
+  /** Whether the side panel is resizable horizontally. */
+  resizable?: boolean;
   /** The content that will be rendered within the canvas panel. */
   children?: React.ReactNode;
   /** A Jss Object used to override or extend the styles applied. */
@@ -71,6 +75,7 @@ export const HvCanvasSidePanel = forwardRef<
     onToggle,
     onTabChange,
     labels: labelsProp,
+    resizable = true,
     className,
     children,
     classes: classesProp,
@@ -89,6 +94,15 @@ export const HvCanvasSidePanel = forwardRef<
     tabs?.[0]?.id ?? "none",
   );
 
+  const { width, isDragging, getContainerProps, getSeparatorProps } =
+    useResizable({
+      resizable,
+      ref,
+      initialWidth: 320,
+      minWidth: 100,
+      maxWidth: 500,
+    });
+
   const handleTogglePanel = (event: React.MouseEvent | React.KeyboardEvent) => {
     setOpen((prev) => !prev);
     onToggle?.(event, !open);
@@ -105,12 +119,17 @@ export const HvCanvasSidePanel = forwardRef<
   return (
     <>
       <div
-        ref={ref}
         id={id}
         className={cx(classes.root, className, {
           [classes.open]: open,
           [classes.close]: !open,
         })}
+        {...getContainerProps()}
+        style={{
+          ...getContainerProps().style,
+          width: open ? width : 0,
+          transition: isDragging ? "none" : undefined,
+        }}
         {...others}
       >
         {tabs && (
@@ -138,6 +157,7 @@ export const HvCanvasSidePanel = forwardRef<
           {children}
         </HvPanel>
       </div>
+      {resizable && <div {...getSeparatorProps()} />}
       <HvIconButton
         variant="primaryGhost"
         title={open ? labels.close : labels.open}
@@ -146,6 +166,10 @@ export const HvCanvasSidePanel = forwardRef<
           [classes.handleOpen]: open,
           [classes.handleClose]: !open,
         })}
+        style={{
+          left: open ? width : 0,
+          transition: isDragging ? "none" : undefined,
+        }}
       >
         <End style={{ rotate: open ? "180deg" : undefined }} />
       </HvIconButton>
diff --git a/packages/pentaho/src/Canvas/SidePanel/useResizable.tsx b/packages/pentaho/src/Canvas/SidePanel/useResizable.tsx
new file mode 100644
index 0000000000..9f9e1a7ca3
--- /dev/null
+++ b/packages/pentaho/src/Canvas/SidePanel/useResizable.tsx
@@ -0,0 +1,107 @@
+import { useRef, useState } from "react";
+import { useForkRef } from "@hitachivantara/uikit-react-core";
+
+interface ContainerProps {
+  ref: any;
+  style: React.CSSProperties;
+}
+
+interface HandleProps {
+  style: React.CSSProperties;
+  onMouseMove?: (event: React.MouseEvent) => void;
+  onMouseLeave?: () => void;
+  onMouseDown?: () => void;
+  role: string;
+}
+
+interface ResizableProps {
+  resizable: boolean;
+  ref: any;
+  initialWidth?: number;
+  minWidth?: number;
+  maxWidth?: number;
+}
+
+export const useResizable = (
+  resizableOptions: ResizableProps,
+): {
+  width: number;
+  isDragging: boolean;
+  getContainerProps: () => ContainerProps;
+  getSeparatorProps: () => HandleProps;
+} => {
+  const {
+    resizable,
+    ref,
+    initialWidth = 320,
+    minWidth = 100,
+    maxWidth = 600,
+  } = resizableOptions;
+
+  const [width, setWidth] = useState(initialWidth);
+  const [isHover, setIsHover] = useState(false);
+  const [isDragging, setIsDragging] = useState(false);
+
+  const panelRef = useRef<HTMLDivElement>(null);
+
+  const forkedRef = useForkRef(ref, panelRef);
+
+  const mouseMove = (event: any) => {
+    if (panelRef.current) {
+      const rect = panelRef.current.getBoundingClientRect();
+      const newWidth = event.clientX - rect.left;
+      if (newWidth >= minWidth && newWidth <= maxWidth) {
+        setWidth(newWidth);
+      }
+    }
+  };
+
+  const handleMouseMove = (event: any) => {
+    if (panelRef.current) {
+      const rect = panelRef.current.getBoundingClientRect();
+      const isHoverBorder =
+        event.clientX >= rect.right - 5 && event.clientX <= rect.right + 5;
+      setIsHover(isHoverBorder);
+    }
+  };
+
+  const handleMouseUp = () => {
+    document.removeEventListener("mousemove", mouseMove);
+    document.removeEventListener("mouseup", handleMouseUp);
+    setIsDragging(false);
+  };
+
+  const startResizing = () => {
+    document.addEventListener("mousemove", mouseMove);
+    document.addEventListener("mouseup", handleMouseUp);
+    setIsDragging(true);
+  };
+
+  const getContainerProps = (): ContainerProps => ({
+    ref: forkedRef,
+    style: {
+      width,
+    },
+  });
+
+  const getSeparatorProps = (): HandleProps => ({
+    style: {
+      left: width,
+      position: "absolute",
+      top: 0,
+      bottom: 0,
+      width: 5,
+      cursor: resizable ? "col-resize" : "default",
+    },
+    onMouseMove: resizable ? handleMouseMove : undefined,
+    onMouseLeave: resizable ? () => setIsHover(false) : undefined,
+    onMouseDown: resizable
+      ? () => {
+          if (isHover) startResizing();
+        }
+      : undefined,
+    role: "separator",
+  });
+
+  return { width, isDragging, getContainerProps, getSeparatorProps };
+};