rzen
90cf82d740
The second half: system drag sessions over phase 1's model, per DRAG-REORDER.md and 04-interactions.md § Drag & drop. - Card faces, lane headers, and trash rows drag as NSItemProvider sessions (two exported UTTypes, JSON payload in flatten order, plain-text titles as the secondary representation) — replacing m4's custom lane-reorder gesture and trash drag-out wholesale; the app-wide DragSession carries the members, the frozen dragged sizes, the live proposal, and the effective operation. - Three drop delegates (lane masonry, strip, window fallback), each accepting both types and routing internally per the single-target-dispatch rule; the cursor is the physical mouse converted to strip space; proposals come from DropSlotMath with hysteresis threaded through, and the lane-strip proposal clamps in front of the shown trash. - Locality picks the default — move within a board, copy across, the badge tracking live; ⌥ forces copy (ignored on within-board lane drags), ⌘ forces move; trash rows restore within their board (positional), copy out across boards by default, ⌘ forcing the true restore-move. - N contiguous shadows with reflow keyed on the proposal; the committed-overlay hold renders the dropped arrangement until the reload echo lands (1.5 s dissolution deadline for refused writes); the re-grounding trio: geometry re-derives per render, proposals re-validate by liveness at release, an emptied drag cancels itself. - Edge autoscroll (ticking driver over DragAutoScrollMath, re-targeting per step), the mouse-up-gated late-event cleanup, and the polling watchdog — the pathfinder's lifecycle traps, ported. - Store: moveLanes and multi-card restoreByDrag join the one-bracket drop commits. 784 unit tests. Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
62 lines
2.4 KiB
Swift
62 lines
2.4 KiB
Swift
import SwiftUI
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/// The **shadow placeholder** — the outline occupying an item's proposed landing spot
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/// (DRAG-REORDER.md § The pieces).
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///
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/// One shape for both the drag's shadows and the lane resize's resting footprint, because they are
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/// the same thing said twice: "here is the space this item occupies in the layout". They differ only
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/// in whether the space is a *proposal* — the drag's is dashed, because a dashed outline is what
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/// 03-board-ui.md's placeholder vocabulary asks for and what makes "the drop lands exactly here"
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/// legible; the resize's is a plain fill, because the lane is already there.
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///
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/// **Hit-transparent, always.** The strip's own drop target has to stay live beneath the shadows
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/// (DRAG-REORDER.md § Single-target dispatch: "shadow placeholders are hit-transparent, so the strip
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/// target stays live beneath them"), and a shadow that swallowed the release would strand the drop.
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struct DragShadow: View {
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/// Matched to the surface it stands in for — a lane's plate is 10, a card's is 8.
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var cornerRadius: CGFloat = 10
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/// A drop proposal (dashed) or a resting footprint (plain).
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var dashed: Bool = true
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var body: some View {
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RoundedRectangle(cornerRadius: cornerRadius)
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.fill(.quaternary.opacity(0.5))
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.overlay {
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if dashed {
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RoundedRectangle(cornerRadius: cornerRadius)
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.strokeBorder(
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Color.accentColor.opacity(0.55),
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style: StrokeStyle(lineWidth: 1.5, dash: [6])
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)
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}
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}
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.allowsHitTesting(false)
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.accessibilityHidden(true)
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}
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}
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/// The count badge a multi-drag's replica wears — Finder's own affordance for "this many are coming
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/// with me" (04-interactions.md ▸ Drag and drop: "dragging any member of a multi-selection drags the
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/// whole selection").
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///
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/// Draws nothing for a single item, so every replica can carry it unconditionally.
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struct DragCountBadge: View {
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let count: Int
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var body: some View {
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if count > 1 {
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Text("\(count)")
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.font(.caption2.bold())
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.monospacedDigit()
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.foregroundStyle(.white)
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.padding(.horizontal, 6)
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.padding(.vertical, 3)
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.background(Circle().fill(Color.accentColor))
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.offset(x: 10, y: -10)
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}
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}
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}
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