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/** |
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* Pick mini-inserter `position` before mount. Core's size middleware clamps to |
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* the initial side and blocks flip, so decide top vs bottom from the anchor rect. |
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*/ |
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|
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/** Popover's own viewport inset, `OVERFLOW_PADDING` in @wordpress/components. */ |
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const OVERFLOW_PADDING = 8; |
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|
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/** Comfortable height below the anchor before preferring top. */ |
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const COMFORTABLE_HEIGHT = 520; |
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|
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/** |
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* Element rect in main-document viewport coords (adds iframe offset when needed). |
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* |
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* @param {?Element} element |
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* @return {?Object} `{ top, bottom, left, right, width, height }`, or null. |
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*/ |
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export const mainDocumentRect = ( element ) => { |
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if ( ! element ) return null; |
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|
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const rect = element.getBoundingClientRect(); |
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const frame = element.ownerDocument?.defaultView?.frameElement; |
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if ( ! frame ) { |
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return rect; |
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} |
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|
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const frameRect = frame.getBoundingClientRect(); |
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return { |
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top: rect.top + frameRect.top, |
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bottom: rect.bottom + frameRect.top, |
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left: rect.left + frameRect.left, |
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right: rect.right + frameRect.left, |
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width: rect.width, |
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height: rect.height, |
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}; |
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}; |
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|
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/** |
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* `'top center'` when below is short and above is larger; else `'bottom center'`. |
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* |
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* @param {?Object} rect Anchor rect in main-document viewport coordinates. |
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* @return {string} |
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*/ |
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export const resolveMiniInserterPosition = ( rect ) => { |
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if ( ! rect ) return 'bottom center'; |
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|
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const below = window.innerHeight - rect.bottom - OVERFLOW_PADDING; |
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const above = rect.top - OVERFLOW_PADDING; |
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|
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return below < Math.min( COMFORTABLE_HEIGHT, above ) ? 'top center' : 'bottom center'; |
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}; |
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|
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/** |
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* `resolveMiniInserterPosition` straight from the anchor element. |
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* |
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* @param {?Element} element |
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* @return {string} `'top center'` or `'bottom center'`. |
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*/ |
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export const resolveMiniInserterPositionFor = ( element ) => |
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resolveMiniInserterPosition( mainDocumentRect( element ) ); |
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