@wordpress/block-editor/build-module/components/writing-flow/use-drag-selection.mjs.map

Generic block editor.

{
  "version": 3,
  "sources": ["../../../src/components/writing-flow/use-drag-selection.js"],
  "sourcesContent": ["/**\n * WordPress dependencies\n */\nimport { useSelect, useDispatch } from '@wordpress/data';\nimport { useRefEffect } from '@wordpress/compose';\n\n/**\n * Internal dependencies\n */\nimport { store as blockEditorStore } from '../../store';\n\n/**\n * Sets the `contenteditable` wrapper element to `value`.\n *\n * @param {HTMLElement} node  Block element.\n * @param {boolean}     value `contentEditable` value (true or false)\n */\nfunction setContentEditableWrapper( node, value ) {\n\tnode.contentEditable = value;\n\t// Firefox doesn't automatically move focus.\n\tif ( value ) {\n\t\tnode.focus();\n\t}\n}\n\n/**\n * Sets a multi-selection based on the native selection across blocks.\n */\nexport default function useDragSelection() {\n\tconst { startMultiSelect, stopMultiSelect } =\n\t\tuseDispatch( blockEditorStore );\n\tconst {\n\t\tisSelectionEnabled,\n\t\thasSelectedBlock,\n\t\tisDraggingBlocks,\n\t\tisMultiSelecting,\n\t} = useSelect( blockEditorStore );\n\treturn useRefEffect(\n\t\t( node ) => {\n\t\t\tconst { ownerDocument } = node;\n\t\t\tconst { defaultView } = ownerDocument;\n\n\t\t\tlet anchorElement;\n\t\t\tlet rafId;\n\n\t\t\tfunction onMouseUp() {\n\t\t\t\tstopMultiSelect();\n\t\t\t\t// Equivalent to attaching the listener once.\n\t\t\t\tdefaultView.removeEventListener( 'mouseup', onMouseUp );\n\t\t\t\t// The browser selection won't have updated yet at this point,\n\t\t\t\t// so wait until the next animation frame to get the browser\n\t\t\t\t// selection.\n\t\t\t\trafId = defaultView.requestAnimationFrame( () => {\n\t\t\t\t\tif ( ! hasSelectedBlock() ) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\n\t\t\t\t\t// If the selection is complete (on mouse up), and no\n\t\t\t\t\t// multiple blocks have been selected, set focus back to the\n\t\t\t\t\t// anchor element. if the anchor element contains the\n\t\t\t\t\t// selection. Additionally, the contentEditable wrapper can\n\t\t\t\t\t// now be disabled again.\n\t\t\t\t\tsetContentEditableWrapper( node, false );\n\n\t\t\t\t\tconst selection = defaultView.getSelection();\n\n\t\t\t\t\tif ( selection.rangeCount ) {\n\t\t\t\t\t\tconst range = selection.getRangeAt( 0 );\n\t\t\t\t\t\tconst { commonAncestorContainer } = range;\n\t\t\t\t\t\tconst clonedRange = range.cloneRange();\n\n\t\t\t\t\t\tif (\n\t\t\t\t\t\t\tanchorElement.contains( commonAncestorContainer )\n\t\t\t\t\t\t) {\n\t\t\t\t\t\t\tanchorElement.focus();\n\t\t\t\t\t\t\tselection.removeAllRanges();\n\t\t\t\t\t\t\tselection.addRange( clonedRange );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\tlet lastMouseDownTarget;\n\n\t\t\tfunction onMouseDown( { target } ) {\n\t\t\t\tlastMouseDownTarget = target;\n\t\t\t}\n\n\t\t\tfunction onMouseLeave( { buttons, target, relatedTarget } ) {\n\t\t\t\tif ( ! target.contains( lastMouseDownTarget ) ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// If we're moving into a child element, ignore. We're tracking\n\t\t\t\t// the mouse leaving the element to a parent, no a child.\n\t\t\t\tif ( target.contains( relatedTarget ) ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Avoid triggering a multi-selection if the user is already\n\t\t\t\t// dragging blocks.\n\t\t\t\tif ( isDraggingBlocks() ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// The primary button must be pressed to initiate selection.\n\t\t\t\t// See https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/buttons\n\t\t\t\tif ( buttons !== 1 ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Abort if we are already multi-selecting.\n\t\t\t\tif ( isMultiSelecting() ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Abort if selection is leaving writing flow.\n\t\t\t\tif ( node === target ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Check the attribute, not the contentEditable attribute. All\n\t\t\t\t// child elements of the content editable wrapper are editable\n\t\t\t\t// and return true for this property. We only want to start\n\t\t\t\t// multi selecting when the mouse leaves the wrapper.\n\t\t\t\tif ( target.getAttribute( 'contenteditable' ) !== 'true' ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tif ( ! isSelectionEnabled() ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Do not rely on the active element because it may change after\n\t\t\t\t// the mouse leaves for the first time. See\n\t\t\t\t// https://github.com/WordPress/gutenberg/issues/48747.\n\t\t\t\tanchorElement = target;\n\n\t\t\t\tstartMultiSelect();\n\n\t\t\t\t// `onSelectionStart` is called after `mousedown` and\n\t\t\t\t// `mouseleave` (from a block). The selection ends when\n\t\t\t\t// `mouseup` happens anywhere in the window.\n\t\t\t\tdefaultView.addEventListener( 'mouseup', onMouseUp );\n\n\t\t\t\t// Allow cross contentEditable selection by temporarily making\n\t\t\t\t// all content editable. We can't rely on using the store and\n\t\t\t\t// React because re-rending happens too slowly. We need to be\n\t\t\t\t// able to select across instances immediately.\n\t\t\t\tsetContentEditableWrapper( node, true );\n\t\t\t}\n\n\t\t\tnode.addEventListener( 'mouseout', onMouseLeave );\n\t\t\tnode.addEventListener( 'mousedown', onMouseDown );\n\n\t\t\treturn () => {\n\t\t\t\tnode.removeEventListener( 'mouseout', onMouseLeave );\n\t\t\t\tdefaultView.removeEventListener( 'mouseup', onMouseUp );\n\t\t\t\tdefaultView.cancelAnimationFrame( rafId );\n\t\t\t};\n\t\t},\n\t\t[\n\t\t\tstartMultiSelect,\n\t\t\tstopMultiSelect,\n\t\t\tisSelectionEnabled,\n\t\t\thasSelectedBlock,\n\t\t]\n\t);\n}\n"],
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