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fix(popover): ensure popover does not go offscreen when adjusting top position #25350

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Jun 9, 2022
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59 changes: 59 additions & 0 deletions core/src/components/popover/test/adjustment/index.html
Original file line number Diff line number Diff line change
@@ -0,0 +1,59 @@
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="UTF-8" />
<title>Popover - Adjustment</title>
<meta
name="viewport"
content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover"
/>
<link href="../../../../../css/ionic.bundle.css" rel="stylesheet" />
<link href="../../../../../scripts/testing/styles.css" rel="stylesheet" />
<script src="../../../../../scripts/testing/scripts.js"></script>
<script nomodule src="../../../../../dist/ionic/ionic.js"></script>
<script type="module" src="../../../../../dist/ionic/ionic.esm.js"></script>
<script type="module">
import { popoverController } from '../../../../dist/ionic/index.esm.js';
window.popoverController = popoverController;
</script>
</head>
<body>
<ion-app>
<ion-content>
<p style="text-align: center">Click everywhere to open the popover.</p>
</ion-content>
</ion-app>

<script>
document.querySelector('ion-content').addEventListener('click', handleButtonClick);

async function handleButtonClick(ev) {
const popover = await popoverController.create({
component: 'popover-example-page',
event: ev,
reference: 'event',
});

popover.present();
}

customElements.define(
'popover-example-page',
class PopoverContent extends HTMLElement {
connectedCallback() {
this.innerHTML = `
<ion-list>
<ion-list-header>Ionic</ion-list-header>
<ion-item button>Learn Ionic</ion-item>
<ion-item button>Documentation</ion-item>
<ion-item button>Showcase</ion-item>
<ion-item button>GitHub Repo</ion-item>
<ion-item button>Another Item</ion-item>
</ion-list>
`;
}
}
);
</script>
</body>
</html>
32 changes: 32 additions & 0 deletions core/src/components/popover/test/adjustment/popover.e2e.ts
Original file line number Diff line number Diff line change
@@ -0,0 +1,32 @@
import { expect } from '@playwright/test';
import { test } from '@utils/test/playwright';

test.describe('popover: adjustment', async () => {
test('should not render the popover offscreen', async ({ page }) => {
await page.goto('/src/components/popover/test/adjustment');

/**
* We need to click in an area where
* there is not enough room to show the popover
* below the click coordinates but not enough
* room above the click coordinates that we
* can just move the popover to without it going
* offscreen.
*/
await page.setViewportSize({
width: 500,
height: 400,
});

const ionPopoverDidPresent = await page.spyOnEvent('ionPopoverDidPresent');

await page.mouse.click(300, 300);

await ionPopoverDidPresent.next();

const popoverContent = page.locator('ion-popover .popover-content');
const box = (await popoverContent.boundingBox())!;

expect(box.y > 0).toBe(true);
});
});
12 changes: 11 additions & 1 deletion core/src/components/popover/utils.ts
Original file line number Diff line number Diff line change
Expand Up @@ -863,7 +863,17 @@ export const calculateWindowAdjustment = (
*/
if (triggerTop + triggerHeight + contentHeight > bodyHeight && (side === 'top' || side === 'bottom')) {
if (triggerTop - contentHeight > 0) {
top = triggerTop - contentHeight - triggerHeight - (arrowHeight - 1);
/**
* While we strive to align the popover with the trigger
* on smaller screens this is not always possible. As a result,
* we adjust the popover up so that it does not hang
* off the bottom of the screen. However, we do not want to move
* the popover up so much that it goes off the top of the screen.
*
* We chose 12 here so that the popover position looks a bit nicer as
* it is not right up against the edge of the screen.
*/
top = Math.max(12, triggerTop - contentHeight - triggerHeight - (arrowHeight - 1));
arrowTop = top + contentHeight;
originY = 'bottom';
addPopoverBottomClass = true;
Expand Down