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/*
* SonarQube
* Copyright (C) 2009-2024 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/**
* Positioning rules:
* - Bottom = below the block, horizontally centered
* - BottomLeft = below the block, horizontally left-aligned
* - BottomRight = below the block, horizontally right-aligned
* - Left = Left of the block, vertically centered
* - LeftTop = on the left-side of the block, vertically top-aligned
* - LeftBottom = on the left-side of the block, vertically bottom-aligned
* - Right = Right of the block, vertically centered
* - RightTop = on the right-side of the block, vertically top-aligned
* - RightBottom = on the right-side of the block, vetically bottom-aligned
* - Top = above the block, horizontally centered
* - TopLeft = above the block, horizontally left-aligned
* - TopRight = above the block, horizontally right-aligned
*/
export enum PopupPlacement {
Bottom = 'bottom',
BottomLeft = 'bottom-left',
BottomRight = 'bottom-right',
Left = 'left',
LeftTop = 'left-top',
LeftBottom = 'left-bottom',
Right = 'right',
RightTop = 'right-top',
RightBottom = 'right-bottom',
Top = 'top',
TopLeft = 'top-left',
TopRight = 'top-right',
}
export enum PopupZLevel {
Content = 'content',
Default = 'popup',
Global = 'global',
Absolute = 'absolute',
}
export type BasePlacement = Extract<
PopupPlacement,
PopupPlacement.Bottom | PopupPlacement.Top | PopupPlacement.Left | PopupPlacement.Right
>;
export const PLACEMENT_FLIP_MAP: { [key in PopupPlacement]: PopupPlacement } = {
[PopupPlacement.Left]: PopupPlacement.Right,
[PopupPlacement.LeftBottom]: PopupPlacement.RightBottom,
[PopupPlacement.LeftTop]: PopupPlacement.RightTop,
[PopupPlacement.Right]: PopupPlacement.Left,
[PopupPlacement.RightBottom]: PopupPlacement.LeftBottom,
[PopupPlacement.RightTop]: PopupPlacement.LeftTop,
[PopupPlacement.Top]: PopupPlacement.Bottom,
[PopupPlacement.TopLeft]: PopupPlacement.BottomLeft,
[PopupPlacement.TopRight]: PopupPlacement.BottomRight,
[PopupPlacement.Bottom]: PopupPlacement.Top,
[PopupPlacement.BottomLeft]: PopupPlacement.TopLeft,
[PopupPlacement.BottomRight]: PopupPlacement.TopRight,
};
const MARGIN_TO_EDGE = 4;
export function popupPositioning(
toggleNode: Element,
popupNode: Element,
placement: PopupPlacement = PopupPlacement.Bottom,
) {
const toggleRect = toggleNode.getBoundingClientRect();
const popupRect = popupNode.getBoundingClientRect();
let { left, top } = toggleRect;
switch (placement) {
case PopupPlacement.Bottom:
left += toggleRect.width / 2 - popupRect.width / 2;
top += toggleRect.height;
break;
case PopupPlacement.BottomLeft:
top += toggleRect.height;
break;
case PopupPlacement.BottomRight:
left += toggleRect.width - popupRect.width;
top += toggleRect.height;
break;
case PopupPlacement.Left:
left -= popupRect.width;
top += toggleRect.height / 2 - popupRect.height / 2;
break;
case PopupPlacement.LeftTop:
left -= popupRect.width;
break;
case PopupPlacement.LeftBottom:
left -= popupRect.width;
top += toggleRect.height - popupRect.height;
break;
case PopupPlacement.Right:
left += toggleRect.width;
top += toggleRect.height / 2 - popupRect.height / 2;
break;
case PopupPlacement.RightTop:
left += toggleRect.width;
break;
case PopupPlacement.RightBottom:
left += toggleRect.width;
top += toggleRect.height - popupRect.height;
break;
case PopupPlacement.Top:
left += toggleRect.width / 2 - popupRect.width / 2;
top -= popupRect.height;
break;
case PopupPlacement.TopLeft:
top -= popupRect.height;
break;
case PopupPlacement.TopRight:
left += toggleRect.width - popupRect.width;
top -= popupRect.height;
break;
}
const inBoundariesLeft = Math.min(
Math.max(left, getMinLeftPlacement(toggleRect)),
getMaxLeftPlacement(toggleRect, popupRect),
);
const inBoundariesTop = Math.min(
Math.max(top, getMinTopPlacement(toggleRect)),
getMaxTopPlacement(toggleRect, popupRect),
);
return {
height: popupRect.height,
left: inBoundariesLeft,
leftFix: inBoundariesLeft - left,
top: inBoundariesTop,
topFix: inBoundariesTop - top,
width: popupRect.width,
};
}
function getMinLeftPlacement(toggleRect: DOMRect) {
return Math.min(
MARGIN_TO_EDGE, // Left edge of the sceen
toggleRect.left + toggleRect.width / 2, // Left edge of the screen when scrolled
);
}
function getMaxLeftPlacement(toggleRect: DOMRect, popupRect: DOMRect) {
return Math.max(
document.documentElement.clientWidth - popupRect.width - MARGIN_TO_EDGE, // Right edge of the screen
toggleRect.left + toggleRect.width / 2 - popupRect.width, // Right edge of the screen when scrolled
);
}
function getMinTopPlacement(toggleRect: DOMRect) {
return Math.min(
MARGIN_TO_EDGE, // Top edge of the sceen
toggleRect.top + toggleRect.height / 2, // Top edge of the screen when scrolled
);
}
function getMaxTopPlacement(toggleRect: DOMRect, popupRect: DOMRect) {
return Math.max(
document.documentElement.clientHeight - popupRect.height - MARGIN_TO_EDGE, // Bottom edge of the screen
toggleRect.top + toggleRect.height / 2 - popupRect.height, // Bottom edge of the screen when scrolled
);
}
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