@wordpress/block-editor
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{
"version": 3,
"sources": ["../../src/utils/dom.js"],
"sourcesContent": ["const BLOCK_SELECTOR = '.block-editor-block-list__block';\nconst APPENDER_SELECTOR = '.block-list-appender';\nconst BLOCK_APPENDER_CLASS = '.block-editor-button-block-appender';\n\n/**\n * Returns true if two elements are contained within the same block.\n *\n * @param {Element} a First element.\n * @param {Element} b Second element.\n *\n * @return {boolean} Whether elements are in the same block.\n */\nexport function isInSameBlock( a, b ) {\n\treturn a.closest( BLOCK_SELECTOR ) === b.closest( BLOCK_SELECTOR );\n}\n\n/**\n * Returns true if an element is considered part of the block and not its inner\n * blocks or appender.\n *\n * @param {Element} blockElement Block container element.\n * @param {Element} element Element.\n *\n * @return {boolean} Whether an element is considered part of the block and not\n * its inner blocks or appender.\n */\nexport function isInsideRootBlock( blockElement, element ) {\n\tconst parentBlock = element.closest(\n\t\t[ BLOCK_SELECTOR, APPENDER_SELECTOR, BLOCK_APPENDER_CLASS ].join( ',' )\n\t);\n\treturn parentBlock === blockElement;\n}\n\n/**\n * Finds the block client ID given any DOM node inside the block.\n *\n * @param {Node?} node DOM node.\n *\n * @return {string|undefined} Client ID or undefined if the node is not part of\n * a block.\n */\nexport function getBlockClientId( node ) {\n\twhile ( node && node.nodeType !== node.ELEMENT_NODE ) {\n\t\tnode = node.parentNode;\n\t}\n\n\tif ( ! node ) {\n\t\treturn;\n\t}\n\n\tconst elementNode = /** @type {Element} */ ( node );\n\tconst blockNode = elementNode.closest( BLOCK_SELECTOR );\n\n\tif ( ! blockNode ) {\n\t\treturn;\n\t}\n\n\treturn blockNode.id.slice( 'block-'.length );\n}\n\n/**\n * Calculates the union of two rectangles.\n *\n * @param {DOMRect} rect1 First rectangle.\n * @param {DOMRect} rect2 Second rectangle.\n * @return {DOMRect} Union of the two rectangles.\n */\nexport function rectUnion( rect1, rect2 ) {\n\tconst left = Math.min( rect1.left, rect2.left );\n\tconst right = Math.max( rect1.right, rect2.right );\n\tconst bottom = Math.max( rect1.bottom, rect2.bottom );\n\tconst top = Math.min( rect1.top, rect2.top );\n\n\treturn new window.DOMRectReadOnly( left, top, right - left, bottom - top );\n}\n\n/**\n * Returns whether an element is visible.\n *\n * @param {Element} element Element.\n * @return {boolean} Whether the element is visible.\n */\nfunction isElementVisible( element ) {\n\tconst viewport = element.ownerDocument.defaultView;\n\tif ( ! viewport ) {\n\t\treturn false;\n\t}\n\n\t// Check for <VisuallyHidden> component.\n\tif ( element.classList.contains( 'components-visually-hidden' ) ) {\n\t\treturn false;\n\t}\n\n\tconst bounds = element.getBoundingClientRect();\n\tif ( bounds.width === 0 || bounds.height === 0 ) {\n\t\treturn false;\n\t}\n\n\t// Older browsers, e.g. Safari < 17.4 may not support the `checkVisibility` method.\n\tif ( element.checkVisibility ) {\n\t\treturn element.checkVisibility?.( {\n\t\t\topacityProperty: true,\n\t\t\tcontentVisibilityAuto: true,\n\t\t\tvisibilityProperty: true,\n\t\t} );\n\t}\n\n\tconst style = viewport.getComputedStyle( element );\n\n\tif (\n\t\tstyle.display === 'none' ||\n\t\tstyle.visibility === 'hidden' ||\n\t\tstyle.opacity === '0'\n\t) {\n\t\treturn false;\n\t}\n\n\treturn true;\n}\n\n/**\n * Checks if the element is scrollable.\n *\n * @param {Element} element Element.\n * @return {boolean} True if the element is scrollable.\n */\nfunction isScrollable( element ) {\n\tconst style = window.getComputedStyle( element );\n\treturn (\n\t\tstyle.overflowX === 'auto' ||\n\t\tstyle.overflowX === 'scroll' ||\n\t\tstyle.overflowY === 'auto' ||\n\t\tstyle.overflowY === 'scroll'\n\t);\n}\n\nexport const WITH_OVERFLOW_ELEMENT_BLOCKS = [ 'core/navigation' ];\n/**\n * Returns the bounding rectangle of an element, with special handling for blocks\n * that have visible overflowing children (defined in WITH_OVERFLOW_ELEMENT_BLOCKS).\n *\n * For blocks like Navigation that can have overflowing elements (e.g. submenus),\n * this function calculates the combined bounds of both the parent and its visible\n * children. The returned rect may extend beyond the viewport.\n * The returned rect represents the full extent of the element and its visible\n * children, which may extend beyond the viewport.\n *\n * @param {Element} element Element.\n * @return {DOMRect} Bounding client rect of the element and its visible children.\n */\nexport function getElementBounds( element ) {\n\tconst viewport = element.ownerDocument.defaultView;\n\n\tif ( ! viewport ) {\n\t\treturn new window.DOMRectReadOnly();\n\t}\n\n\tlet bounds = element.getBoundingClientRect();\n\tconst dataType = element.getAttribute( 'data-type' );\n\n\t/*\n\t * For blocks with overflowing elements (like Navigation), include the bounds\n\t * of visible children that extend beyond the parent container.\n\t */\n\tif ( dataType && WITH_OVERFLOW_ELEMENT_BLOCKS.includes( dataType ) ) {\n\t\tconst stack = [ element ];\n\t\tlet currentElement;\n\n\t\twhile ( ( currentElement = stack.pop() ) ) {\n\t\t\t// Children won\u2019t affect bounds unless the element is not scrollable.\n\t\t\tif ( ! isScrollable( currentElement ) ) {\n\t\t\t\tfor ( const child of currentElement.children ) {\n\t\t\t\t\tif ( isElementVisible( child ) ) {\n\t\t\t\t\t\tconst childBounds = child.getBoundingClientRect();\n\t\t\t\t\t\tbounds = rectUnion( bounds, childBounds );\n\t\t\t\t\t\tstack.push( child );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/*\n\t * Take into account the outer horizontal limits of the container in which\n\t * an element is supposed to be \"visible\". For example, if an element is\n\t * positioned -10px to the left of the window x value (0), this function\n\t * discounts the negative overhang because it's not visible and therefore\n\t * not to be counted in the visibility calculations. Top and bottom values\n\t * are not accounted for to accommodate vertical scroll.\n\t */\n\tconst left = Math.max( bounds.left, 0 );\n\tconst right = Math.min( bounds.right, viewport.innerWidth );\n\tbounds = new window.DOMRectReadOnly(\n\t\tleft,\n\t\tbounds.top,\n\t\tright - left,\n\t\tbounds.height\n\t);\n\n\treturn bounds;\n}\n"],
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