diff --git a/ivette/src/dome/renderer/newdnd.tsx b/ivette/src/dome/renderer/newdnd.tsx
index aaf67ca885a9b26538828058858fafbac4e4732d..da3e81d351a0b86753a1621faf25e6abb0f39318 100644
--- a/ivette/src/dome/renderer/newdnd.tsx
+++ b/ivette/src/dome/renderer/newdnd.tsx
@@ -102,7 +102,15 @@ interface DropZone extends DropHandler {
node: HTMLElement;
}
-class DnD {
+/**
+ D&D Controller.
+
+ This class allows to connect Drag Sources and Drop Target with each others.
+ You shall never use the methods of the `DnD` class directly.
+
+ The preferred way for creating `DnD` classes is to use the `useDnD()` React Hook.
+ */
+export class DnD {
private registry = new Map<string, DropZone>();
private dragging: HTMLElement | undefined;
@@ -139,13 +147,13 @@ class DnD {
if (hover !== curr) {
this.hovering = hover;
if (curr && curr.onDropOut) { curr.onDropOut(); }
- if (hover && hover.onDropIn) {
- const meta = e.altKey || e.ctrlKey || e.shiftKey || e.metaKey;
- const rect = hover.node.getBoundingClientRect();
- const dropX = e.clientX - rect.left;
- const dropY = e.clientY - rect.top;
- hover.onDropIn({ meta, rect, dropX, dropY });
- }
+ }
+ if (hover && hover.onDropIn) {
+ const meta = e.altKey || e.ctrlKey || e.shiftKey || e.metaKey;
+ const rect = hover.node.getBoundingClientRect();
+ const dropX = Math.round(e.clientX - rect.left);
+ const dropY = Math.round(e.clientY - rect.top);
+ hover.onDropIn({ meta, rect, dropX, dropY });
}
}
}
@@ -175,8 +183,8 @@ export function useDropTarget(
const onDrop = handlers?.onDrop;
const onDropIn = handlers?.onDropIn;
const onDropOut = handlers?.onDropOut;
+ const node = nodeRef.current;
React.useEffect(() => {
- const node = nodeRef.current;
if (
dnd && node && (onDrop || onDropIn || onDropOut)
) {
@@ -184,7 +192,7 @@ export function useDropTarget(
return () => dnd.offDropZone(id);
}
return;
- }, [dnd, onDrop, onDropIn, onDropOut]);
+ }, [dnd, node, onDrop, onDropIn, onDropOut]);
return nodeRef;
}
@@ -210,7 +218,7 @@ export interface DropTargetProps extends DropHandler {
*/
export function DropTarget(props: DropTargetProps): JSX.Element {
- const { dnd, disabled, className, style, children } = props;
+ const { dnd, disabled = false, className, style, children } = props;
const nodeRef = useDropTarget(dnd, disabled ? undefined : props);
return (
<div ref={nodeRef} className={className} style={style}>
@@ -310,7 +318,7 @@ export interface DragSourceProps extends DragHandler, DropHandler {
*/
export function DragSource(props: DragSourceProps): JSX.Element {
//--- Props
- const { dnd, disabled, handle, children } = props;
+ const { dnd, disabled = false, handle, children } = props;
const { onStart, onDrag, onStop } = props;
//--- Dragging State
const [dragging, setDragging] = React.useState<Dragging | undefined>();
diff --git a/ivette/src/sandbox/usednd.tsx b/ivette/src/sandbox/usednd.tsx
index 090483e6e23bfae71dcba8916a32d649ae67f3c5..173c90e1d482a02dfbdd4470c80b6b2621a73641 100644
--- a/ivette/src/sandbox/usednd.tsx
+++ b/ivette/src/sandbox/usednd.tsx
@@ -26,31 +26,42 @@
/* -------------------------------------------------------------------------- */
import React from 'react';
+import { Label } from 'dome/controls/labels';
import { LCD } from 'dome/controls/displays';
+import { Button } from 'dome/controls/buttons';
import * as Box from 'dome/layout/boxes';
import * as DnD from 'dome/newdnd';
import { registerSandbox } from 'ivette';
import './sandbox.css';
-const delta = (id: string, d: DnD.Dragging): string => {
+const source = (id: string, d: DnD.Dragging): string => {
const dx = d.dragX - d.rootX;
const dy = d.dragY - d.rootY;
return `${id} ${dx}:${dy}`;
};
+const target = (id: string, d: DnD.Dropping): string => {
+ const dx = d.dropX;
+ const dy = d.dropY;
+ const m = d.meta ? '+' : '?';
+ return `${id}${m} ${dx}:${dy}`;
+};
+
interface BlobProps {
id: string;
+ dnd: DnD.DnD;
setState: (s: string) => void;
}
-function Blob(props: BlobProps): JSX.Element {
- const { id, setState } = props;
+function Source(props: BlobProps): JSX.Element {
+ const { id, dnd, setState } = props;
return (
<DnD.DragSource
className='sandbox-item'
styleDragging={{ background: 'lightgreen' }}
+ dnd={dnd}
onStart={() => setState(id)}
- onDrag={(d) => setState(delta(id, d))}
+ onDrag={(d) => setState(source(id, d))}
onStop={() => setState('--')}
>
Blob #{id}
@@ -58,19 +69,55 @@ function Blob(props: BlobProps): JSX.Element {
);
}
+function Target(props: BlobProps): JSX.Element {
+ const { id, dnd, setState } = props;
+ return (
+ <DnD.DropTarget
+ className='sandbox-item'
+ dnd={dnd}
+ onDrop={() => setState(id)}
+ onDropIn={(d) => setState(target(id, d))}
+ onDropOut={() => setState('--')}
+ >
+ Zone #{id}
+ </DnD.DropTarget>
+ );
+}
+
function Item({ id }: { id: string }): JSX.Element {
return <DnD.Item className='sandbox-item' id={id}>Item {id}</DnD.Item>;
}
function UseDnD(): JSX.Element {
- const [state, setState] = React.useState('--');
+ const dnd = DnD.useDnD();
+ const [items, setItems] = React.useState<string[]>([]);
+ const [source, setSource] = React.useState('--');
+ const [target, setTarget] = React.useState('--');
+ const onReset = () => {
+ setItems([]);
+ setSource('--');
+ setTarget('--');
+ };
return (
<Box.Vfill>
<Box.Hbox>
- <LCD label={state} />
+ <Button label='Reset' onClick={onReset} />
+ <LCD label={source} />
+ <LCD label={target} />
</Box.Hbox>
<Box.Hbox>
<Box.Vbox>
+ <Label label='Controlled list' />
+ <DnD.List items={items} setItems={setItems}>
+ <Item id='A' />
+ <Item id='B' />
+ <Item id='C' />
+ <Item id='D' />
+ <Item id='E' />
+ </DnD.List>
+ </Box.Vbox>
+ <Box.Vbox>
+ <Label label='Uncontrolled list' />
<DnD.List>
<Item id='A' />
<Item id='B' />
@@ -80,9 +127,16 @@ function UseDnD(): JSX.Element {
</DnD.List>
</Box.Vbox>
<Box.Vbox>
- <Blob id='A' setState={setState} />
- <Blob id='B' setState={setState} />
- <Blob id='C' setState={setState} />
+ <Label label='Draggable Blobs' />
+ <Source id='A' dnd={dnd} setState={setSource} />
+ <Source id='B' dnd={dnd} setState={setSource} />
+ <Source id='C' dnd={dnd} setState={setSource} />
+ </Box.Vbox>
+ <Box.Vbox>
+ <Label label='Droppable Blobs' />
+ <Target id='X' dnd={dnd} setState={setTarget} />
+ <Target id='Y' dnd={dnd} setState={setTarget} />
+ <Target id='Z' dnd={dnd} setState={setTarget} />
</Box.Vbox>
</Box.Hbox>
</Box.Vfill >