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2026-07-13 12:25:07 +08:00

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TypeScript

// ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
// ┃ ██████ ██████ ██████ █ █ █ █ █ █▄ ▀███ █ ┃
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// ┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
// ┃ Copyright (c) 2017, the Perspective Authors. ┃
// ┃ ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌ ┃
// ┃ This file is part of the Perspective library, distributed under the terms ┃
// ┃ of the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). ┃
// ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
import { Locator, Page } from "@playwright/test";
/** The draggable handle of the first visible inactive column. */
export const INACTIVE_DRAG =
"#sub-columns .column-selector-column:not(.column-selector-column-hidden) .column-selector-draggable";
/** The draggable handle of the first active column. */
export const ACTIVE_DRAG =
"#active-columns .column-selector-column .column-selector-draggable";
/** Returns the `#settings_panel` innerHTML from the viewer's shadow root. */
export async function getSettingsPanelContents(page: Page) {
return page.evaluate(() => {
const viewer = document.querySelector("perspective-viewer")!;
return viewer.shadowRoot!.querySelector("#settings_panel")!.innerHTML;
});
}
/**
* Initiates a real browser drag from `src` to `tgt` using mouse events, without
* completing the drop. The drag is left in-flight so the caller can snapshot the
* intermediate dragover UI state.
*/
export async function shadowDragOver(page: Page, src: Locator, tgt: Locator) {
const srcBox = (await src.boundingBox())!;
const tgtBox = (await tgt.boundingBox())!;
const srcX = srcBox.x + srcBox.width / 2;
const srcY = srcBox.y + srcBox.height / 2;
const tgtX = tgtBox.x + tgtBox.width / 2;
const tgtY = tgtBox.y + tgtBox.height / 2;
await page.mouse.move(srcX, srcY);
await page.mouse.down();
// Small initial move to trigger the browser's drag-start threshold.
await page.mouse.move(srcX + 5, srcY, { steps: 2 });
// Move to the target center, generating dragenter + dragover events.
await page.mouse.move(tgtX, tgtY, { steps: 10 });
// Allow Yew to process events and re-render.
await page.waitForTimeout(100);
}
/**
* Initiates a real browser drag from `src`, optionally hovers over
* `wrongTgt`, then presses Escape to cancel — firing `dragend` without a
* `drop`.
*/
export async function shadowDragCancel(
page: Page,
src: Locator,
wrongTgt: Locator | null = null,
) {
const srcBox = (await src.boundingBox())!;
const srcX = srcBox.x + srcBox.width / 2;
const srcY = srcBox.y + srcBox.height / 2;
await page.evaluate(() => {
window["dragend_resolvers"] = Promise.withResolvers();
document.body.addEventListener("dragend", () => {
window["dragend_resolvers"].resolve();
});
});
await page.mouse.move(srcX, srcY);
await page.mouse.down();
await page.mouse.move(srcX + 5, srcY, { steps: 2 });
if (wrongTgt) {
const wrongBox = (await wrongTgt.boundingBox())!;
await page.mouse.move(
wrongBox.x + wrongBox.width / 2,
wrongBox.y + wrongBox.height / 2,
{ steps: 10 },
);
}
// Drag is a cruel mistress.
await page.waitForTimeout(100);
// Cancel the drag (fires dragend with no preceding drop).
await page.keyboard.press("Escape");
await page.evaluate(async () => {
await window["dragend_resolvers"].promise;
});
}
export async function localDrag(page: any, source: any, target: any) {
await source.dragTo(target, { steps: 100 });
}