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ContextMenu,
ContextMenuTrigger,
} from "@/ahuora-design-system/ui/context-menu";
import { SwitchGroupCommands } from "@/commands/SwitchCurrentGroup";
import { useCurrentGroupId, useCurrentObject, useGraphicsObjects, useFlowsheetUnitOps } from "@/hooks/flowsheetObjects";
import { useSearchParam } from "@/hooks/searchParams";
import { resetClick } from "@/store/ClickSlice";
import { useAppDispatch } from "@/store/hooks";
import { setPointerState } from "@/store/PointerSlice";
import { RootState } from "@/store/store";
import React, { createContext, memo, useEffect, useRef, useState } from "react";
import { useDrop } from "react-dnd";
import { Layer, Stage } from "react-konva";
import { useSelector } from "react-redux";
import { useMousePosition } from "react-use-mouse-position";
import { useResizeObserver } from "usehooks-ts";
import { UnitOpCommands } from "../../../../commands/AddUnitOp";
import SolveButton from "../SolveButton";
import AllElements from "./AllElements";
import BreadCrumbs from "./BreadCrumbs";
import { CanvasContextMenu } from "./CanvasContextMenu";
import { FlowsheetCommands } from "./FlowsheetCommands";
import { useFlowsheetCanvasFunctions } from "./FlowsheetFunctions";
import { Gridlines } from "./Gridlines";
import PropertyHover from "./PropertyHover";
import CanvasControls from "./ZoomControls";
import { ExportMSSRResultsCommand } from "../../multi-steady-state/ExportMSSResultsCommand";
interface FlowsheetProps {
width: number;
}
export const IndicatorVisibilityContext = createContext<boolean>(true);
const FlowsheetSurface: React.FC<FlowsheetProps> = (props) => {
const canvasDiv = useRef<HTMLDivElement>(null);
const pointerState = useSelector((state: RootState) => state.pointer);
const objectHoverState = useSelector((state: RootState) => state.hover);
const { mouseX, mouseY } = useMousePosition();
const { height = 480 } = useResizeObserver({ ref: canvasDiv });
const canvasWidth = Math.floor(props.width);
const canvasHeight = Math.floor(height);
const [FlowsheetSurfaceState, setFlowsheetSurfaceState] = useState({
scale: 1,
stageX: canvasWidth,
stageY: canvasHeight,
});
const clicked = useSelector((state: RootState) => state.click.clicked);
const clickedId = useSelector((state: RootState) => state.click.id);
const dispatch = useAppDispatch();
const [objectId] = useSearchParam("object");
const objectID = parseInt(objectId || "0");
const currentObject = useCurrentObject();
const rootGroup = useCurrentGroupId();
const graphicsObjects = useGraphicsObjects();
const flowsheetObjects = useFlowsheetUnitOps();
const currentGroupId = useCurrentGroupId();
// Inside the FlowsheetSurface component
const [contextMenuPosition, setContextMenuPosition] = useState({
x: 0,
y: 0,
});
const [isMouseDown, setIsMouseDown] = useState(false);
const handleSetPointer = (pointerMode: "select" | "move") => {
// arc will be added in the future
dispatch(setPointerState(pointerMode));
};
const togglePointerState = () => {
const nextState = pointerState.state === "select" ? "move" : "select";
handleSetPointer(nextState);
};
const {
changeZoom,
handleDrop,
onKeyDown,
zoomToFit,
resetZoom,
onMouseDown,
onMouseUp,
onMouseMove,
onDoubleClick,
onScroll,
onStageDrag,
deleteSelectedObject,
rotateFlipSelectedObject,
onObjectSelect,
convertStreamToDecisionNode,
groupSelectedObjects,
unGroupCurrentObject,
handleObjectCopy,
handleObjectPaste,
selectionRect,
setSelectionRect,
} = useFlowsheetCanvasFunctions({
canvasDiv,
pointerState,
FlowsheetSurfaceState,
setFlowsheetSurfaceState,
canvasWidth,
canvasHeight,
});
// necessary for the property hover to be disabled on drag
const handleMouseDown = (e) => {
setIsMouseDown(true);
onMouseDown(e);
};
const handleMouseUp = (e) => {
setIsMouseDown(false);
onMouseUp(e);
};
const [{ isOver }, drop] = useDrop(
() => ({
accept: "unit_operation",
drop: handleDrop,
collect: (monitor) => ({
isOver: !!monitor.isOver(),
}),
}),
[
FlowsheetSurfaceState.stageX,
FlowsheetSurfaceState.stageY,
FlowsheetSurfaceState.scale,
rootGroup,
],
);
const [indicatorsVisible, setIndicatorsVisible] = useState(true);
const [hasZoomedToFit, setHasZoomedToFit] = useState(false);
useEffect(() => {
if (
!hasZoomedToFit &&
graphicsObjects !== undefined &&
flowsheetObjects !== undefined &&
currentGroupId !== undefined
) {
const { newScale, newStageX, newStageY } = zoomToFit();
setFlowsheetSurfaceState({
scale: newScale,
stageX: newStageX,
stageY: newStageY,
});
setHasZoomedToFit(true);
}
}, [graphicsObjects, flowsheetObjects, currentGroupId, hasZoomedToFit]);
if (clicked && clickedId) {
onObjectSelect(clickedId);
setTimeout(() => {
dispatch(resetClick());
}, 1);
}
const handleContextMenu = (event: React.MouseEvent<HTMLDivElement>) => {
event.preventDefault();
if (canvasDiv.current) {
const rect = canvasDiv.current.getBoundingClientRect();
const x = event.clientX - rect.left;
const y = event.clientY - rect.top;
setContextMenuPosition({ x, y });
}
};
return (
<IndicatorVisibilityContext.Provider value={indicatorsVisible}>
<UnitOpCommands
state={FlowsheetSurfaceState}
width={canvasWidth}
height={canvasHeight}
/>
<SwitchGroupCommands
setFlowsheetSurfaceState={setFlowsheetSurfaceState}
zoomToFit={zoomToFit}
/>
<FlowsheetCommands
zoomToFit={zoomToFit}
resetZoom={resetZoom}
togglePointerState={togglePointerState}
/>
<ExportMSSRResultsCommand />
<ContextMenu>
<div className="grow relative" ref={canvasDiv}>
<div
className="skia-canvas overflow-hidden bg-white"
ref={drop}
data-testid={10}
role="Space"
aria-label="Flowsheet Canvas"
tabIndex={0}
onKeyDown={onKeyDown}
onContextMenu={handleContextMenu}
>
<ContextMenuTrigger>
<Stage
id="canvas"
width={canvasWidth}
height={canvasHeight}
onMouseDown={handleMouseDown}
onMouseUp={handleMouseUp}
onMouseMove={onMouseMove}
onDblClick={onDoubleClick}
onWheel={onScroll}
onDragMove={onStageDrag}
scaleX={FlowsheetSurfaceState.scale}
scaleY={FlowsheetSurfaceState.scale}
x={FlowsheetSurfaceState.stageX}
y={FlowsheetSurfaceState.stageY}
className={
pointerState.state === "move"
? "cursor-grab"
: "cursor-default"
}
>
{
<>
<Gridlines
x={FlowsheetSurfaceState.stageX}
y={FlowsheetSurfaceState.stageY}
w={canvasWidth}
h={canvasHeight}
spacing={50}
zoom={FlowsheetSurfaceState.scale}
color="#BBBBBB"
/>
<Layer>
<AllElements
selectionRect={selectionRect}
setSelectionRect={setSelectionRect}
FlowsheetSurfaceState={FlowsheetSurfaceState}
/>
</Layer>
</>
}
</Stage>
</ContextMenuTrigger>
</div>
{/* This div positions breadcrumbs at top-left - Don't modify positioning without testing
* as it prevents dead space at the top of flowsheet */}
<div className="top-2 absolute left-2 flex flex-row items-center">
<BreadCrumbs />
</div>
{/* This div positions controls at top-right - Don't modify positioning without testing
* as changes may create unused dead band between controls and breadcrumbs */}
<div className="top-2 absolute right-2 flex flex-row items-center gap-2">
<CanvasControls
solveButton={<SolveButton className="h-full" />}
canvasWidth={canvasWidth}
canvasHeight={canvasHeight}
canvasScale={FlowsheetSurfaceState.scale}
canvasChangeZoom={changeZoom}
viewStatusData={{
visibilitySetter: (indicatorsVisible: boolean) =>
setIndicatorsVisible(indicatorsVisible),
visibility: indicatorsVisible,
}}
/>
</div>
</div>
<CanvasContextMenu
deleteSelectedObject={deleteSelectedObject}
rotateFlipSelectedObject={rotateFlipSelectedObject}
unGroupCurrentObject={unGroupCurrentObject}
groupSelectedObjects={groupSelectedObjects}
convertStreamToDecisionNode={convertStreamToDecisionNode}
copyObject={handleObjectCopy}
pasteObject={() => handleObjectPaste(contextMenuPosition)}
objectType={currentObject?.objectType}
isSelectionVisible={selectionRect.selectVisible}
objectId={objectID}
/>
{
// !isMouseDown so that the property hover is disabled on drag
objectHoverState.state && !isMouseDown && (
<div
style={{
position: "fixed",
top: mouseY,
left: mouseX + 5,
zIndex: 100,
}}
>
<PropertyHover
simulationObject={objectHoverState?.simulationObject}
/>
</div>
)
}
</ContextMenu>
</IndicatorVisibilityContext.Provider>
);
};
export default memo(FlowsheetSurface);
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