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refactor: extract handleDocDrag from setupDocInteraction

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Co-authored-by: Horizontal42 <75383519+Horizontal42@users.noreply.github.com>
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google-labs-jules[bot] 2026-09-04 07:10:03 +00:00
parent 37cfd2144b
commit 44778ae74d
1 changed files with 83 additions and 61 deletions
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144
src/main.ts
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@ -140,6 +140,83 @@ function reorderDoc(srcId: string, targetId: string): void {
renderDocList(); renderDocList();
} }
function handleDocDrag(
e: MouseEvent,
el: HTMLElement,
doc: DocMeta,
list: HTMLElement,
setDraggingState: (isDragging: boolean) => void,
setSuppressClick: (suppress: boolean) => void,
): void {
if ((e.target as HTMLElement).closest("button")) return;
const startY = e.clientY;
let cachedItems: { el: HTMLElement; top: number; bottom: number }[] | null = null;
let prevOver: HTMLElement | undefined;
let dragging = false;
const onMove = (ev: MouseEvent) => {
if (!cachedItems) {
const domItems = [...list.querySelectorAll<HTMLElement>(".doc-item")];
cachedItems = domItems.map((item) => {
const rect = item.getBoundingClientRect();
return { el: item, top: rect.top, bottom: rect.bottom };
});
}
if (!dragging) {
if (Math.abs(ev.clientY - startY) < 4) return;
dragging = true;
setDraggingState(true);
setSuppressClick(true);
el.classList.add("dragging");
document.body.style.cursor = "grabbing";
}
let over: HTMLElement | undefined;
for (const item of cachedItems) {
if (!over && item.el !== el) {
if (ev.clientY >= item.top && ev.clientY <= item.bottom) {
over = item.el;
}
}
}
let newOver: HTMLElement | undefined;
if (over) {
const overDoc = getDocById(over.dataset.docId);
if (overDoc && !!overDoc.pinned === !!doc.pinned) newOver = over;
}
if (prevOver && prevOver !== newOver) {
prevOver.classList.remove("drag-over");
}
if (newOver && prevOver !== newOver) {
newOver.classList.add("drag-over");
}
prevOver = newOver;
};
const onScroll = () => {
cachedItems = null;
};
const onUp = () => {
window.removeEventListener("mousemove", onMove);
window.removeEventListener("mouseup", onUp);
list.removeEventListener("scroll", onScroll);
cachedItems = null;
if (dragging) {
const target = list.querySelector<HTMLElement>(".doc-item.drag-over");
for (const item of list.querySelectorAll(".doc-item"))
item.classList.remove("drag-over", "dragging");
document.body.style.cursor = "";
if (target?.dataset.docId) reorderDoc(doc.id, target.dataset.docId);
}
dragging = false;
setDraggingState(false);
};
window.addEventListener("mousemove", onMove);
window.addEventListener("mouseup", onUp);
list.addEventListener("scroll", onScroll);
}
function setupDocInteraction(el: HTMLElement, doc: DocMeta, list: HTMLElement): void { function setupDocInteraction(el: HTMLElement, doc: DocMeta, list: HTMLElement): void {
// Reordering uses plain mouse tracking, not the native HTML5 drag API — // Reordering uses plain mouse tracking, not the native HTML5 drag API —
// Tauri's window-level file-drop hook (dragDropEnabled, needed for // Tauri's window-level file-drop hook (dragDropEnabled, needed for
@ -148,69 +225,14 @@ function setupDocInteraction(el: HTMLElement, doc: DocMeta, list: HTMLElement):
// and the OS always shows a "not allowed" cursor. // and the OS always shows a "not allowed" cursor.
let dragging = false; let dragging = false;
let suppressClick = false; let suppressClick = false;
el.addEventListener("mousedown", (e) => { el.addEventListener("mousedown", (e) => {
if ((e.target as HTMLElement).closest("button")) return; handleDocDrag(e, el, doc, list,
const startY = e.clientY; (d) => { dragging = d; },
let cachedItems: { el: HTMLElement; top: number; bottom: number }[] | null = (s) => { suppressClick = s; }
null; );
let prevOver: HTMLElement | undefined;
const onMove = (ev: MouseEvent) => {
if (!cachedItems) {
const domItems = [...list.querySelectorAll<HTMLElement>(".doc-item")];
cachedItems = domItems.map((item) => {
const rect = item.getBoundingClientRect();
return { el: item, top: rect.top, bottom: rect.bottom };
});
}
if (!dragging) {
if (Math.abs(ev.clientY - startY) < 4) return;
dragging = true;
suppressClick = true;
el.classList.add("dragging");
document.body.style.cursor = "grabbing";
}
let over: HTMLElement | undefined;
for (const item of cachedItems) {
if (!over && item.el !== el) {
if (ev.clientY >= item.top && ev.clientY <= item.bottom) {
over = item.el;
}
}
}
let newOver: HTMLElement | undefined;
if (over) {
const overDoc = getDocById(over.dataset.docId);
if (overDoc && !!overDoc.pinned === !!doc.pinned) newOver = over;
}
if (prevOver && prevOver !== newOver) {
prevOver.classList.remove("drag-over");
}
if (newOver && prevOver !== newOver) {
newOver.classList.add("drag-over");
}
prevOver = newOver;
};
const onScroll = () => {
cachedItems = null;
};
const onUp = () => {
window.removeEventListener("mousemove", onMove);
window.removeEventListener("mouseup", onUp);
list.removeEventListener("scroll", onScroll);
cachedItems = null;
if (dragging) {
const target = list.querySelector<HTMLElement>(".doc-item.drag-over");
for (const item of list.querySelectorAll(".doc-item"))
item.classList.remove("drag-over", "dragging");
document.body.style.cursor = "";
if (target?.dataset.docId) reorderDoc(doc.id, target.dataset.docId);
}
dragging = false;
};
window.addEventListener("mousemove", onMove);
window.addEventListener("mouseup", onUp);
list.addEventListener("scroll", onScroll);
}); });
el.addEventListener("click", () => { el.addEventListener("click", () => {
if (suppressClick) { if (suppressClick) {
suppressClick = false; suppressClick = false;