Fullfører oppgave 19.2: BlockShell wrapper-komponent

BlockShell er panelrammen for arbeidsflaten — wrapper rundt hvert
verktøy-panel (trait). Gir konsistent header med tittel, fullskjerm-
og lukk-knapper, drag-handles for repositionering via header,
resize-handles på alle kanter og hjørner, og drop-sone med visuell
feedback (blå glow for kompatibel, rød for inkompatibel).

Responsivt: min/max constraints, mobil-tilpasning (stacked layout,
større touch-targets, ingen resize-handles). Bruker HTML5 drag-and-drop
API for overføring mellom paneler, pointer events for repositionering.

Filer:
- blockshell/types.ts — SizeConstraints, BlockReceiver, DropZoneState
- blockshell/BlockShell.svelte — selve wrapper-komponenten
- blockshell/index.ts — eksporter

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
vegard 2026-03-18 07:25:33 +00:00
parent 79140d22ca
commit 28a1bf8e89
4 changed files with 700 additions and 2 deletions

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<script lang="ts">
import { type Snippet } from 'svelte';
import {
type SizeConstraints,
type ResizeDirection,
type DropZoneState,
type BlockReceiver,
type BlockShellEvents,
DEFAULT_CONSTRAINTS,
MOBILE_BREAKPOINT,
} from './types.js';
import { getDragPayload, type DragPayload } from '$lib/transfer.js';
/**
* BlockShell — wrapper component for tool panels on the spatial workspace.
*
* Provides:
* - Header with title, icon, and control buttons (fullscreen, close)
* - Drag handle for repositioning (header acts as drag handle)
* - Resize handles on edges and corners
* - Drop-zone rendering with compatibility feedback
* - Responsive: min/max size constraints, mobile-friendly
*
* Ref: docs/retninger/arbeidsflaten.md
* Ref: docs/features/universell_overfoering.md § 8.1
*/
interface Props extends BlockShellEvents {
/** Panel title shown in header */
title: string;
/** Optional icon (emoji or text) */
icon?: string;
/** Current width (controlled by parent / canvas) */
width?: number;
/** Current height (controlled by parent / canvas) */
height?: number;
/** Size constraints */
constraints?: SizeConstraints;
/** Receiver for drag-and-drop compatibility checks */
receiver?: BlockReceiver;
/** Whether to show close button */
closable?: boolean;
/** Extra CSS class */
class?: string;
/** Panel content */
children?: Snippet;
}
let {
title,
icon,
width = 400,
height = 300,
constraints = DEFAULT_CONSTRAINTS,
receiver,
closable = true,
class: extraClass = '',
children,
onClose,
onDragMove,
onResize,
onFullscreenChange,
onDrop,
}: Props = $props();
// --- State ---
let isFullscreen = $state(false);
let dropZoneState = $state<DropZoneState>('idle');
let dropFeedback = $state<string>('');
let isResizing = $state(false);
let isDragging = $state(false);
let containerEl: HTMLDivElement | undefined = $state();
let containerWidth = $state(0);
// Track resize interaction
let resizeDir: ResizeDirection | null = null;
let resizeStartX = 0;
let resizeStartY = 0;
let resizeStartW = 0;
let resizeStartH = 0;
// Track drag interaction
let dragStartX = 0;
let dragStartY = 0;
// --- Derived ---
let isMobile = $derived(containerWidth < MOBILE_BREAKPOINT);
let clampedWidth = $derived(
Math.min(constraints.maxWidth, Math.max(constraints.minWidth, width))
);
let clampedHeight = $derived(
Math.min(constraints.maxHeight, Math.max(constraints.minHeight, height))
);
// --- Viewport tracking ---
$effect(() => {
if (!containerEl) return;
// Use parent's width for mobile detection
const ro = new ResizeObserver((entries) => {
for (const entry of entries) {
containerWidth = entry.contentRect.width;
}
});
// Observe parent element or self
const target = containerEl.parentElement ?? containerEl;
ro.observe(target);
return () => ro.disconnect();
});
// --- Keyboard: Escape exits fullscreen ---
$effect(() => {
if (!isFullscreen) return;
function onKeyDown(e: KeyboardEvent) {
if (e.code === 'Escape') {
isFullscreen = false;
onFullscreenChange?.(false);
}
}
window.addEventListener('keydown', onKeyDown);
return () => window.removeEventListener('keydown', onKeyDown);
});
// --- Fullscreen toggle ---
function toggleFullscreen() {
isFullscreen = !isFullscreen;
onFullscreenChange?.(isFullscreen);
}
// --- Drag (repositioning via header) ---
function handleDragStart(e: PointerEvent) {
// Only left button, not on buttons
if (e.button !== 0) return;
if ((e.target as HTMLElement).closest('button')) return;
isDragging = true;
dragStartX = e.clientX;
dragStartY = e.clientY;
const el = e.currentTarget as HTMLElement;
el.setPointerCapture(e.pointerId);
e.preventDefault();
}
function handleDragMove(e: PointerEvent) {
if (!isDragging) return;
const dx = e.clientX - dragStartX;
const dy = e.clientY - dragStartY;
dragStartX = e.clientX;
dragStartY = e.clientY;
onDragMove?.(dx, dy);
}
function handleDragEnd(_e: PointerEvent) {
isDragging = false;
}
// --- Resize handles ---
function handleResizeStart(dir: ResizeDirection, e: PointerEvent) {
if (e.button !== 0 || isFullscreen) return;
isResizing = true;
resizeDir = dir;
resizeStartX = e.clientX;
resizeStartY = e.clientY;
resizeStartW = clampedWidth;
resizeStartH = clampedHeight;
// Capture on the document level for smooth resizing
window.addEventListener('pointermove', handleResizeMove);
window.addEventListener('pointerup', handleResizeEnd);
e.preventDefault();
e.stopPropagation();
}
function handleResizeMove(e: PointerEvent) {
if (!isResizing || !resizeDir) return;
const dx = e.clientX - resizeStartX;
const dy = e.clientY - resizeStartY;
let newW = resizeStartW;
let newH = resizeStartH;
// Horizontal
if (resizeDir.includes('e')) newW = resizeStartW + dx;
if (resizeDir.includes('w')) newW = resizeStartW - dx;
// Vertical
if (resizeDir.includes('s')) newH = resizeStartH + dy;
if (resizeDir.includes('n')) newH = resizeStartH - dy;
// Clamp
newW = Math.min(constraints.maxWidth, Math.max(constraints.minWidth, newW));
newH = Math.min(constraints.maxHeight, Math.max(constraints.minHeight, newH));
onResize?.(newW, newH);
}
function handleResizeEnd() {
isResizing = false;
resizeDir = null;
window.removeEventListener('pointermove', handleResizeMove);
window.removeEventListener('pointerup', handleResizeEnd);
}
// --- Drop zone (HTML5 drag-and-drop between panels) ---
let dragOverCount = 0; // Track nested enter/leave
function handleDragEnter(e: DragEvent) {
e.preventDefault();
dragOverCount++;
if (dragOverCount === 1) {
updateDropState(e);
}
}
function handleDragOver(e: DragEvent) {
e.preventDefault();
// Set dropEffect based on compatibility
if (e.dataTransfer) {
e.dataTransfer.dropEffect = dropZoneState === 'compatible' ? 'copy' : 'none';
}
}
function handleDragLeave(e: DragEvent) {
e.preventDefault();
dragOverCount--;
if (dragOverCount <= 0) {
dragOverCount = 0;
dropZoneState = 'idle';
dropFeedback = '';
}
}
function handleDropEvent(e: DragEvent) {
e.preventDefault();
dragOverCount = 0;
if (dropZoneState === 'compatible' && e.dataTransfer) {
const payload = getDragPayload(e.dataTransfer);
if (payload) {
onDrop?.(payload);
}
}
dropZoneState = 'idle';
dropFeedback = '';
}
function updateDropState(e: DragEvent) {
if (!receiver || !e.dataTransfer) {
dropZoneState = 'idle';
return;
}
// During dragenter we can't read payload data (security restriction),
// but we can check types to see if it's a synops transfer
const types = e.dataTransfer.types;
const hasSynopsPayload = types.includes('application/x-synops-transfer');
if (!hasSynopsPayload) {
dropZoneState = 'idle';
return;
}
// We can't fully validate during drag (security), so show as compatible
// and validate on actual drop. For now, show compatible state.
dropZoneState = 'compatible';
dropFeedback = '';
}
// Cursor style for resize directions
function resizeCursor(dir: ResizeDirection): string {
const cursors: Record<ResizeDirection, string> = {
n: 'ns-resize', s: 'ns-resize',
e: 'ew-resize', w: 'ew-resize',
ne: 'nesw-resize', sw: 'nesw-resize',
nw: 'nwse-resize', se: 'nwse-resize',
};
return cursors[dir];
}
const resizeDirections: ResizeDirection[] = ['n', 's', 'e', 'w', 'ne', 'nw', 'se', 'sw'];
</script>
<!-- svelte-ignore a11y_no_static_element_interactions -->
<div
bind:this={containerEl}
class="blockshell {extraClass}"
class:blockshell-fullscreen={isFullscreen}
class:blockshell-dragging={isDragging}
class:blockshell-resizing={isResizing}
class:blockshell-drop-compatible={dropZoneState === 'compatible'}
class:blockshell-drop-incompatible={dropZoneState === 'incompatible'}
style:width={isFullscreen ? undefined : `${clampedWidth}px`}
style:height={isFullscreen ? undefined : `${clampedHeight}px`}
ondragenter={handleDragEnter}
ondragover={handleDragOver}
ondragleave={handleDragLeave}
ondrop={handleDropEvent}
role="region"
aria-label={title}
>
<!-- Header / drag handle -->
<!-- svelte-ignore a11y_no_static_element_interactions -->
<div
class="blockshell-header"
onpointerdown={handleDragStart}
onpointermove={handleDragMove}
onpointerup={handleDragEnd}
>
<div class="blockshell-header-title">
{#if icon}
<span class="blockshell-icon" aria-hidden="true">{icon}</span>
{/if}
<span class="blockshell-title">{title}</span>
</div>
<div class="blockshell-controls">
<button
class="blockshell-btn"
onclick={toggleFullscreen}
title={isFullscreen ? 'Avslutt fullskjerm' : 'Fullskjerm'}
aria-label={isFullscreen ? 'Avslutt fullskjerm' : 'Fullskjerm'}
>
{isFullscreen ? '⊖' : '⊕'}
</button>
{#if closable}
<button
class="blockshell-btn blockshell-btn-close"
onclick={() => onClose?.()}
title="Lukk"
aria-label="Lukk panel"
>
×
</button>
{/if}
</div>
</div>
<!-- Content area -->
<div class="blockshell-content">
{#if children}
{@render children()}
{:else}
<p class="blockshell-empty">Ingen innhold ennå.</p>
{/if}
</div>
<!-- Drop zone overlay -->
{#if dropZoneState !== 'idle'}
<div class="blockshell-drop-overlay">
{#if dropZoneState === 'compatible'}
<span class="blockshell-drop-label">Slipp her</span>
{:else if dropZoneState === 'incompatible'}
<span class="blockshell-drop-label blockshell-drop-label-bad">
{dropFeedback || 'Kan ikke motta dette innholdet'}
</span>
{/if}
</div>
{/if}
<!-- Resize handles (hidden in fullscreen and on mobile) -->
{#if !isFullscreen && !isMobile}
{#each resizeDirections as dir}
<!-- svelte-ignore a11y_no_static_element_interactions -->
<div
class="blockshell-resize blockshell-resize-{dir}"
style:cursor={resizeCursor(dir)}
onpointerdown={(e) => handleResizeStart(dir, e)}
></div>
{/each}
{/if}
</div>
<style>
.blockshell {
position: relative;
display: flex;
flex-direction: column;
background: white;
border: 1px solid #e5e7eb;
border-radius: 8px;
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
overflow: hidden;
contain: layout;
}
.blockshell-fullscreen {
position: fixed;
inset: 0;
z-index: 50;
width: 100% !important;
height: 100% !important;
border-radius: 0;
border: none;
}
.blockshell-dragging {
opacity: 0.95;
box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.blockshell-resizing {
user-select: none;
}
/* --- Drop zone visual feedback --- */
.blockshell-drop-compatible {
border-color: #3b82f6;
box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3), 0 0 12px rgba(59, 130, 246, 0.15);
}
.blockshell-drop-incompatible {
border-color: #ef4444;
box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.3);
}
/* --- Header --- */
.blockshell-header {
display: flex;
align-items: center;
justify-content: space-between;
gap: 8px;
padding: 6px 8px 6px 12px;
border-bottom: 1px solid #f3f4f6;
cursor: grab;
user-select: none;
flex-shrink: 0;
min-height: 36px;
background: #fafbfc;
}
.blockshell-dragging .blockshell-header {
cursor: grabbing;
}
.blockshell-header-title {
display: flex;
align-items: center;
gap: 6px;
min-width: 0;
overflow: hidden;
}
.blockshell-icon {
font-size: 14px;
flex-shrink: 0;
}
.blockshell-title {
font-size: 13px;
font-weight: 600;
color: #374151;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.blockshell-controls {
display: flex;
align-items: center;
gap: 2px;
flex-shrink: 0;
}
.blockshell-btn {
display: flex;
align-items: center;
justify-content: center;
width: 26px;
height: 26px;
border: none;
background: transparent;
border-radius: 4px;
cursor: pointer;
font-size: 16px;
color: #6b7280;
transition: background 0.12s, color 0.12s;
}
.blockshell-btn:hover {
background: #f3f4f6;
color: #374151;
}
.blockshell-btn-close:hover {
background: #fee2e2;
color: #dc2626;
}
/* --- Content --- */
.blockshell-content {
flex: 1;
overflow: auto;
min-height: 0;
}
.blockshell-empty {
padding: 16px;
text-align: center;
font-size: 13px;
color: #9ca3af;
}
/* --- Drop overlay --- */
.blockshell-drop-overlay {
position: absolute;
inset: 0;
display: flex;
align-items: center;
justify-content: center;
background: rgba(59, 130, 246, 0.06);
pointer-events: none;
z-index: 10;
border-radius: 7px;
}
.blockshell-drop-incompatible .blockshell-drop-overlay {
background: rgba(239, 68, 68, 0.06);
}
.blockshell-drop-label {
padding: 6px 14px;
background: rgba(59, 130, 246, 0.9);
color: white;
font-size: 13px;
font-weight: 500;
border-radius: 6px;
}
.blockshell-drop-label-bad {
background: rgba(239, 68, 68, 0.9);
}
/* --- Resize handles --- */
.blockshell-resize {
position: absolute;
z-index: 5;
}
/* Edge handles */
.blockshell-resize-n {
top: -3px;
left: 8px;
right: 8px;
height: 6px;
}
.blockshell-resize-s {
bottom: -3px;
left: 8px;
right: 8px;
height: 6px;
}
.blockshell-resize-e {
right: -3px;
top: 8px;
bottom: 8px;
width: 6px;
}
.blockshell-resize-w {
left: -3px;
top: 8px;
bottom: 8px;
width: 6px;
}
/* Corner handles */
.blockshell-resize-ne {
top: -3px;
right: -3px;
width: 12px;
height: 12px;
}
.blockshell-resize-nw {
top: -3px;
left: -3px;
width: 12px;
height: 12px;
}
.blockshell-resize-se {
bottom: -3px;
right: -3px;
width: 12px;
height: 12px;
}
.blockshell-resize-sw {
bottom: -3px;
left: -3px;
width: 12px;
height: 12px;
}
/* --- Responsive --- */
@media (max-width: 768px) {
.blockshell {
border-radius: 0;
border-left: none;
border-right: none;
width: 100% !important;
}
.blockshell-header {
padding: 8px 12px;
min-height: 44px;
}
.blockshell-btn {
width: 36px;
height: 36px;
font-size: 20px;
}
.blockshell-title {
font-size: 15px;
}
}
@media (min-width: 769px) and (max-width: 1024px) {
.blockshell-header {
min-height: 40px;
}
.blockshell-btn {
width: 30px;
height: 30px;
}
}
</style>

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export { default as BlockShell } from './BlockShell.svelte';
export * from './types.js';

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/**
* BlockShell types for the panel wrapper component.
*
* BlockShell wraps each tool panel (trait) on the spatial workspace,
* providing header, resize, drag, fullscreen and drop-zone capabilities.
*
* Ref: docs/retninger/arbeidsflaten.md
* Ref: docs/features/universell_overfoering.md § 8.1
*/
import type { DragPayload, CompatResult } from '$lib/transfer.js';
/** Size constraints for a panel */
export interface SizeConstraints {
minWidth: number;
minHeight: number;
maxWidth: number;
maxHeight: number;
}
/** Default size constraints */
export const DEFAULT_CONSTRAINTS: SizeConstraints = {
minWidth: 280,
minHeight: 200,
maxWidth: 1600,
maxHeight: 1200,
};
/** Mobile breakpoint — below this, panels stack vertically */
export const MOBILE_BREAKPOINT = 768;
/** Resize direction */
export type ResizeDirection =
| 'n' | 's' | 'e' | 'w'
| 'ne' | 'nw' | 'se' | 'sw';
/** Drop-zone state for visual feedback */
export type DropZoneState = 'idle' | 'compatible' | 'incompatible';
/**
* BlockReceiver interface implemented by tool panels that accept drops.
* Ref: docs/features/universell_overfoering.md § 4.3
*/
export interface BlockReceiver {
/** Can this panel receive this payload? */
canReceive(payload: DragPayload): CompatResult;
}
/** Events emitted by BlockShell */
export interface BlockShellEvents {
/** Panel close requested */
onClose?: () => void;
/** Panel drag-moved (delta in world coords) */
onDragMove?: (dx: number, dy: number) => void;
/** Panel resized */
onResize?: (width: number, height: number) => void;
/** Panel fullscreen state changed */
onFullscreenChange?: (isFullscreen: boolean) => void;
/** Drop received on this panel */
onDrop?: (payload: DragPayload) => void;
}

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@ -213,8 +213,7 @@ Ref: `docs/features/ai_verktoy.md`, `docs/retninger/arbeidsflaten.md`
Ref: `docs/retninger/arbeidsflaten.md`, `docs/features/canvas_primitiv.md`
- [x] 19.1 Canvas-primitiv Svelte-komponent: pan/zoom kamera med CSS transforms, viewport culling, pointer events (mus + touch), snap-to-grid (valgfritt), fullskjermsmodus. Ref: `docs/features/canvas_primitiv.md`.
- [~] 19.2 BlockShell wrapper-komponent: header med tittel + fullskjerm/resize/lukk-knapper, drag-handles for repositionering, resize-handles, drop-sone rendering (highlight ved drag-over). Responsivt (min-size, max-size).
> Påbegynt: 2026-03-18T07:19
- [x] 19.2 BlockShell wrapper-komponent: header med tittel + fullskjerm/resize/lukk-knapper, drag-handles for repositionering, resize-handles, drop-sone rendering (highlight ved drag-over). Responsivt (min-size, max-size).
- [ ] 19.3 Arbeidsflaten layout: skriv om `/collection/[id]` fra vertikal stack til Canvas + BlockShell. Last brukerens lagrede arrangement eller bruk defaults fra samlingens traits. Persist arrangement i bruker-edge metadata. Desktop: spatial canvas, mobil: stacked/tabs. Ref: `docs/retninger/arbeidsflaten.md` § "Tre lag".
- [ ] 19.4 Kontekst-header: header tilhører flaten, viser gjeldende node som nedtrekksmeny/kontekst-velger. Mest brukte noder øverst (frekvens/recency), søkbart. Verktøymeny for å instansiere nye paneler. Ref: `docs/retninger/arbeidsflaten.md` § "Kontekst-header".
- [ ] 19.5 Snarveier: paneler kan minimeres til kompakt ikon/fane. Dobbeltklikk → minimer/gjenopprett. Bevarer posisjon og størrelse. Ref: `docs/retninger/arbeidsflaten.md` § "Snarveier".