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* @license Copyright (c) 2003-2021, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module table/tableselection/mouseeventsobserver\n */\n\nimport { DomEventObserver } from 'ckeditor5/src/engine';\n\n/**\n * The mouse selection event observer.\n *\n * It registers listeners for the following DOM events:\n *\n * - `'mousemove'`\n * - `'mouseup'`\n * - `'mouseleave'`\n *\n * Note that this observer is disabled by default. To enable this observer, it needs to be added to\n * {@link module:engine/view/view~View} using the {@link module:engine/view/view~View#addObserver} method.\n *\n * The observer is registered by the {@link module:table/tableselection~TableSelection} plugin.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class MouseEventsObserver extends DomEventObserver {\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\tthis.domEventType = [ 'mousemove', 'mouseleave' ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n}\n\n/**\n * Fired when the mouse is moved over one of the editables.\n *\n * Introduced by {@link module:table/tableselection/mouseeventsobserver~MouseEventsObserver}.\n *\n * Note that this event is not available by default. To make it available,\n * {@link module:table/tableselection/mouseeventsobserver~MouseEventsObserver} needs to be added\n * to {@link module:engine/view/view~View} using the {@link module:engine/view/view~View#addObserver} method.\n *\n * @see module:table/tableselection/mouseeventsobserver~MouseEventsObserver\n * @event module:engine/view/document~Document#event:mousemove\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n/**\n * Fired when the mouse is moved out of one of the editables.\n *\n * Introduced by {@link module:table/tableselection/mouseeventsobserver~MouseEventsObserver}.\n *\n * Note that this event is not available by default. To make it available,\n * {@link module:table/tableselection/mouseeventsobserver~MouseEventsObserver} needs to be added\n * to {@link module:engine/view/view~View} using the {@link module:engine/view/view~View#addObserver} method.\n *\n * @see module:table/tableselection/mouseeventsobserver~MouseEventsObserver\n * @event module:engine/view/document~Document#event:mouseleave\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n","/**\n * @license Copyright (c) 2003-2021, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module table/tablemouse\n */\n\nimport { Plugin } from 'ckeditor5/src/core';\n\nimport TableSelection from './tableselection';\nimport MouseEventsObserver from './tablemouse/mouseeventsobserver';\n\nimport { getTableCellsContainingSelection } from './utils/selection';\n\n/**\n * This plugin enables a table cells' selection with the mouse.\n * It is loaded automatically by the {@link module:table/table~Table} plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class TableMouse extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'TableMouse';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ TableSelection ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\n\t\t// Currently the MouseObserver only handles `mousedown` and `mouseup` events.\n\t\t// TODO move to the engine?\n\t\teditor.editing.view.addObserver( MouseEventsObserver );\n\n\t\tthis._enableShiftClickSelection();\n\t\tthis._enableMouseDragSelection();\n\t}\n\n\t/**\n\t * Enables making cells selection by <kbd>Shift</kbd>+click. Creates a selection from the cell which previously held\n\t * the selection to the cell which was clicked. It can be the same cell, in which case it selects a single cell.\n\t *\n\t * @private\n\t */\n\t_enableShiftClickSelection() {\n\t\tconst editor = this.editor;\n\t\tlet blockSelectionChange = false;\n\n\t\tconst tableSelection = editor.plugins.get( TableSelection );\n\n\t\tthis.listenTo( editor.editing.view.document, 'mousedown', ( evt, domEventData ) => {\n\t\t\tif ( !this.isEnabled || !tableSelection.isEnabled ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( !domEventData.domEvent.shiftKey ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst anchorCell = tableSelection.getAnchorCell() || getTableCellsContainingSelection( editor.model.document.selection )[ 0 ];\n\n\t\t\tif ( !anchorCell ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst targetCell = this._getModelTableCellFromDomEvent( domEventData );\n\n\t\t\tif ( targetCell && haveSameTableParent( anchorCell, targetCell ) ) {\n\t\t\t\tblockSelectionChange = true;\n\t\t\t\ttableSelection.setCellSelection( anchorCell, targetCell );\n\n\t\t\t\tdomEventData.preventDefault();\n\t\t\t}\n\t\t} );\n\n\t\tthis.listenTo( editor.editing.view.document, 'mouseup', () => {\n\t\t\tblockSelectionChange = false;\n\t\t} );\n\n\t\t// We need to ignore a `selectionChange` event that is fired after we render our new table cells selection.\n\t\t// When downcasting table cells selection to the view, we put the view selection in the last selected cell\n\t\t// in a place that may not be natively a \"correct\" location. This is – we put it directly in the `<td>` element.\n\t\t// All browsers fire the native `selectionchange` event.\n\t\t// However, all browsers except Safari return the selection in the exact place where we put it\n\t\t// (even though it's visually normalized). Safari returns `<td><p>^foo` that makes our selection observer\n\t\t// fire our `selectionChange` event (because the view selection that we set in the first step differs from the DOM selection).\n\t\t// Since `selectionChange` is fired, we automatically update the model selection that moves it that paragraph.\n\t\t// This breaks our dear cells selection.\n\t\t//\n\t\t// Theoretically this issue concerns only Safari that is the only browser that do normalize the selection.\n\t\t// However, to avoid code branching and to have a good coverage for this event blocker, I enabled it for all browsers.\n\t\t//\n\t\t// Note: I'm keeping the `blockSelectionChange` state separately for shift+click and mouse drag (exact same logic)\n\t\t// so I don't have to try to analyze whether they don't overlap in some weird cases. Probably they don't.\n\t\t// But I have other things to do, like writing this comment.\n\t\tthis.listenTo( editor.editing.view.document, 'selectionChange', evt => {\n\t\t\tif ( blockSelectionChange ) {\n\t\t\t\t// @if CK_DEBUG // console.log( 'Blocked selectionChange to avoid breaking table cells selection.' );\n\n\t\t\t\tevt.stop();\n\t\t\t}\n\t\t}, { priority: 'highest' } );\n\t}\n\n\t/**\n\t * Enables making cells selection by dragging.\n\t *\n\t * The selection is made only on mousemove. Mouse tracking is started on mousedown.\n\t * However, the cells selection is enabled only after the mouse cursor left the anchor cell.\n\t * Thanks to that normal text selection within one cell works just fine. However, you can still select\n\t * just one cell by leaving the anchor cell and moving back to it.\n\t *\n\t * @private\n\t */\n\t_enableMouseDragSelection() {\n\t\tconst editor = this.editor;\n\t\tlet anchorCell, targetCell;\n\t\tlet beganCellSelection = false;\n\t\tlet blockSelectionChange = false;\n\n\t\tconst tableSelection = editor.plugins.get( TableSelection );\n\n\t\tthis.listenTo( editor.editing.view.document, 'mousedown', ( evt, domEventData ) => {\n\t\t\tif ( !this.isEnabled || !tableSelection.isEnabled ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Make sure to not conflict with the shift+click listener and any other possible handler.\n\t\t\tif ( domEventData.domEvent.shiftKey || domEventData.domEvent.ctrlKey || domEventData.domEvent.altKey ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tanchorCell = this._getModelTableCellFromDomEvent( domEventData );\n\t\t} );\n\n\t\tthis.listenTo( editor.editing.view.document, 'mousemove', ( evt, domEventData ) => {\n\t\t\tif ( !domEventData.domEvent.buttons ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( !anchorCell ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst newTargetCell = this._getModelTableCellFromDomEvent( domEventData );\n\n\t\t\tif ( newTargetCell && haveSameTableParent( anchorCell, newTargetCell ) ) {\n\t\t\t\ttargetCell = newTargetCell;\n\n\t\t\t\t// Switch to the cell selection mode after the mouse cursor left the anchor cell.\n\t\t\t\t// Switch off only on mouseup (makes selecting a single cell possible).\n\t\t\t\tif ( !beganCellSelection && targetCell != anchorCell ) {\n\t\t\t\t\tbeganCellSelection = true;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Yep, not making a cell selection yet. See method docs.\n\t\t\tif ( !beganCellSelection ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tblockSelectionChange = true;\n\t\t\ttableSelection.setCellSelection( anchorCell, targetCell );\n\n\t\t\tdomEventData.preventDefault();\n\t\t} );\n\n\t\tthis.listenTo( editor.editing.view.document, 'mouseup', () => {\n\t\t\tbeganCellSelection = false;\n\t\t\tblockSelectionChange = false;\n\t\t\tanchorCell = null;\n\t\t\ttargetCell = null;\n\t\t} );\n\n\t\t// See the explanation in `_enableShiftClickSelection()`.\n\t\tthis.listenTo( editor.editing.view.document, 'selectionChange', evt => {\n\t\t\tif ( blockSelectionChange ) {\n\t\t\t\t// @if CK_DEBUG // console.log( 'Blocked selectionChange to avoid breaking table cells selection.' );\n\n\t\t\t\tevt.stop();\n\t\t\t}\n\t\t}, { priority: 'highest' } );\n\t}\n\n\t/**\n\t * Returns the model table cell element based on the target element of the passed DOM event.\n\t *\n\t * @private\n\t * @param {module:engine/view/observer/domeventdata~DomEventData} domEventData\n\t * @returns {module:engine/model/element~Element|undefined} Returns the table cell or `undefined`.\n\t */\n\t_getModelTableCellFromDomEvent( domEventData ) {\n\t\t// Note: Work with positions (not element mapping) because the target element can be an attribute or other non-mapped element.\n\t\tconst viewTargetElement = domEventData.target;\n\t\tconst viewPosition = this.editor.editing.view.createPositionAt( viewTargetElement, 0 );\n\t\tconst modelPosition = this.editor.editing.mapper.toModelPosition( viewPosition );\n\t\tconst modelElement = modelPosition.parent;\n\n\t\treturn modelElement.findAncestor( 'tableCell', { includeSelf: true } );\n\t}\n}\n\nfunction haveSameTableParent( cellA, cellB ) {\n\treturn cellA.parent.parent == cellB.parent.parent;\n}\n","/**\n * @license Copyright (c) 2003-2021, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module table/tableselection\n */\n\nimport { Plugin } from 'ckeditor5/src/core';\nimport { first } from 'ckeditor5/src/utils';\n\nimport TableWalker from './tablewalker';\nimport TableUtils from './tableutils';\n\nimport { cropTableToDimensions, adjustLastRowIndex, adjustLastColumnIndex } from './utils/structure';\nimport { getColumnIndexes, getRowIndexes, getSelectedTableCells, isSelectionRectangular } from './utils/selection';\n\nimport '../theme/tableselection.css';\n\n/**\n * This plugin enables the advanced table cells, rows and columns selection.\n * It is loaded automatically by the {@link module:table/table~Table} plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class TableSelection extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'TableSelection';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ TableUtils ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst model = editor.model;\n\n\t\tthis.listenTo( model, 'deleteContent', ( evt, args ) => this._handleDeleteContent( evt, args ), { priority: 'high' } );\n\n\t\tthis._defineSelectionConverter();\n\t\tthis._enablePluginDisabling(); // sic!\n\t}\n\n\t/**\n\t * Returns the currently selected table cells or `null` if it is not a table cells selection.\n\t *\n\t * @returns {Array.<module:engine/model/element~Element>|null}\n\t */\n\tgetSelectedTableCells() {\n\t\tconst selection = this.editor.model.document.selection;\n\n\t\tconst selectedCells = getSelectedTableCells( selection );\n\n\t\tif ( selectedCells.length == 0 ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// This should never happen, but let's know if it ever happens.\n\t\t// @if CK_DEBUG //\t/* istanbul ignore next */\n\t\t// @if CK_DEBUG //\tif ( selectedCells.length != selection.rangeCount ) {\n\t\t// @if CK_DEBUG //\t\tconsole.warn( 'Mixed selection warning. The selection contains table cells and some other ranges.' );\n\t\t// @if CK_DEBUG //\t}\n\n\t\treturn selectedCells;\n\t}\n\n\t/**\n\t * Returns the selected table fragment as a document fragment.\n\t *\n\t * @returns {module:engine/model/documentfragment~DocumentFragment|null}\n\t */\n\tgetSelectionAsFragment() {\n\t\tconst selectedCells = this.getSelectedTableCells();\n\n\t\tif ( !selectedCells ) {\n\t\t\treturn null;\n\t\t}\n\n\t\treturn this.editor.model.change( writer => {\n\t\t\tconst documentFragment = writer.createDocumentFragment();\n\t\t\tconst tableUtils = this.editor.plugins.get( 'TableUtils' );\n\n\t\t\tconst { first: firstColumn, last: lastColumn } = getColumnIndexes( selectedCells );\n\t\t\tconst { first: firstRow, last: lastRow } = getRowIndexes( selectedCells );\n\n\t\t\tconst sourceTable = selectedCells[ 0 ].findAncestor( 'table' );\n\n\t\t\tlet adjustedLastRow = lastRow;\n\t\t\tlet adjustedLastColumn = lastColumn;\n\n\t\t\t// If the selection is rectangular there could be a case of all cells in the last row/column spanned over\n\t\t\t// next row/column so the real lastRow/lastColumn should be updated.\n\t\t\tif ( isSelectionRectangular( selectedCells, tableUtils ) ) {\n\t\t\t\tconst dimensions = {\n\t\t\t\t\tfirstColumn,\n\t\t\t\t\tlastColumn,\n\t\t\t\t\tfirstRow,\n\t\t\t\t\tlastRow\n\t\t\t\t};\n\n\t\t\t\tadjustedLastRow = adjustLastRowIndex( sourceTable, dimensions );\n\t\t\t\tadjustedLastColumn = adjustLastColumnIndex( sourceTable, dimensions );\n\t\t\t}\n\n\t\t\tconst cropDimensions = {\n\t\t\t\tstartRow: firstRow,\n\t\t\t\tstartColumn: firstColumn,\n\t\t\t\tendRow: adjustedLastRow,\n\t\t\t\tendColumn: adjustedLastColumn\n\t\t\t};\n\n\t\t\tconst table = cropTableToDimensions( sourceTable, cropDimensions, writer );\n\n\t\t\twriter.insert( table, documentFragment, 0 );\n\n\t\t\treturn documentFragment;\n\t\t} );\n\t}\n\n\t/**\n\t * Sets the model selection based on given anchor and target cells (can be the same cell).\n\t * Takes care of setting the backward flag.\n\t *\n\t *\t\tconst modelRoot = editor.model.document.getRoot();\n\t *\t\tconst firstCell = modelRoot.getNodeByPath( [ 0, 0, 0 ] );\n\t *\t\tconst lastCell = modelRoot.getNodeByPath( [ 0, 0, 1 ] );\n\t *\n\t *\t\tconst tableSelection = editor.plugins.get( 'TableSelection' );\n\t *\t\ttableSelection.setCellSelection( firstCell, lastCell );\n\t *\n\t * @param {module:engine/model/element~Element} anchorCell\n\t * @param {module:engine/model/element~Element} targetCell\n\t */\n\tsetCellSelection( anchorCell, targetCell ) {\n\t\tconst cellsToSelect = this._getCellsToSelect( anchorCell, targetCell );\n\n\t\tthis.editor.model.change( writer => {\n\t\t\twriter.setSelection(\n\t\t\t\tcellsToSelect.cells.map( cell => writer.createRangeOn( cell ) ),\n\t\t\t\t{ backward: cellsToSelect.backward }\n\t\t\t);\n\t\t} );\n\t}\n\n\t/**\n\t * Returns the focus cell from the current selection.\n\t *\n\t * @returns {module:engine/model/element~Element}\n\t */\n\tgetFocusCell() {\n\t\tconst selection = this.editor.model.document.selection;\n\t\tconst focusCellRange = [ ...selection.getRanges() ].pop();\n\t\tconst element = focusCellRange.getContainedElement();\n\n\t\tif ( element && element.is( 'element', 'tableCell' ) ) {\n\t\t\treturn element;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Returns the anchor cell from the current selection.\n\t *\n\t * @returns {module:engine/model/element~Element} anchorCell\n\t */\n\tgetAnchorCell() {\n\t\tconst selection = this.editor.model.document.selection;\n\t\tconst anchorCellRange = first( selection.getRanges() );\n\t\tconst element = anchorCellRange.getContainedElement();\n\n\t\tif ( element && element.is( 'element', 'tableCell' ) ) {\n\t\t\treturn element;\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Defines a selection converter which marks the selected cells with a specific class.\n\t *\n\t * The real DOM selection is put in the last cell. Since the order of ranges is dependent on whether the\n\t * selection is backward or not, the last cell will usually be close to the \"focus\" end of the selection\n\t * (a selection has anchor and focus).\n\t *\n\t * The real DOM selection is then hidden with CSS.\n\t *\n\t * @private\n\t */\n\t_defineSelectionConverter() {\n\t\tconst editor = this.editor;\n\t\tconst highlighted = new Set();\n\n\t\teditor.conversion.for( 'editingDowncast' ).add( dispatcher => dispatcher.on( 'selection', ( evt, data, conversionApi ) => {\n\t\t\tconst viewWriter = conversionApi.writer;\n\n\t\t\tclearHighlightedTableCells( viewWriter );\n\n\t\t\tconst selectedCells = this.getSelectedTableCells();\n\n\t\t\tif ( !selectedCells ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tfor ( const tableCell of selectedCells ) {\n\t\t\t\tconst viewElement = conversionApi.mapper.toViewElement( tableCell );\n\n\t\t\t\tviewWriter.addClass( 'ck-editor__editable_selected', viewElement );\n\t\t\t\thighlighted.add( viewElement );\n\t\t\t}\n\n\t\t\tconst lastViewCell = conversionApi.mapper.toViewElement( selectedCells[ selectedCells.length - 1 ] );\n\t\t\tviewWriter.setSelection( lastViewCell, 0 );\n\t\t}, { priority: 'lowest' } ) );\n\n\t\tfunction clearHighlightedTableCells( writer ) {\n\t\t\tfor ( const previouslyHighlighted of highlighted ) {\n\t\t\t\twriter.removeClass( 'ck-editor__editable_selected', previouslyHighlighted );\n\t\t\t}\n\n\t\t\thighlighted.clear();\n\t\t}\n\t}\n\n\t/**\n\t * Creates a listener that reacts to changes in {@link #isEnabled} and, if the plugin was disabled,\n\t * it collapses the multi-cell selection to a regular selection placed inside a table cell.\n\t *\n\t * This listener helps features that disable the table selection plugin bring the selection\n\t * to a clear state they can work with (for instance, because they don't support multiple cell selection).\n\t */\n\t_enablePluginDisabling() {\n\t\tconst editor = this.editor;\n\n\t\tthis.on( 'change:isEnabled', () => {\n\t\t\tif ( !this.isEnabled ) {\n\t\t\t\tconst selectedCells = this.getSelectedTableCells();\n\n\t\t\t\tif ( !selectedCells ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\teditor.model.change( writer => {\n\t\t\t\t\tconst position = writer.createPositionAt( selectedCells[ 0 ], 0 );\n\t\t\t\t\tconst range = editor.model.schema.getNearestSelectionRange( position );\n\n\t\t\t\t\twriter.setSelection( range );\n\t\t\t\t} );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Overrides the default `model.deleteContent()` behavior over a selected table fragment.\n\t *\n\t * @private\n\t * @param {module:utils/eventinfo~EventInfo} event\n\t * @param {Array.<*>} args Delete content method arguments.\n\t */\n\t_handleDeleteContent( event, args ) {\n\t\tconst [ selection, options ] = args;\n\t\tconst model = this.editor.model;\n\t\tconst isBackward = !options || options.direction == 'backward';\n\t\tconst selectedTableCells = getSelectedTableCells( selection );\n\n\t\tif ( !selectedTableCells.length ) {\n\t\t\treturn;\n\t\t}\n\n\t\tevent.stop();\n\n\t\tmodel.change( writer => {\n\t\t\tconst tableCellToSelect = selectedTableCells[ isBackward ? selectedTableCells.length - 1 : 0 ];\n\n\t\t\tmodel.change( writer => {\n\t\t\t\tfor ( const tableCell of selectedTableCells ) {\n\t\t\t\t\tmodel.deleteContent( writer.createSelection( tableCell, 'in' ) );\n\t\t\t\t}\n\t\t\t} );\n\n\t\t\tconst rangeToSelect = model.schema.getNearestSelectionRange( writer.createPositionAt( tableCellToSelect, 0 ) );\n\n\t\t\t// Note: we ignore the case where rangeToSelect may be null because deleteContent() will always (unless someone broke it)\n\t\t\t// create an empty paragraph to accommodate the selection.\n\n\t\t\tif ( selection.is( 'documentSelection' ) ) {\n\t\t\t\twriter.setSelection( rangeToSelect );\n\t\t\t} else {\n\t\t\t\tselection.setTo( rangeToSelect );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * Returns an array of table cells that should be selected based on the\n\t * given anchor cell and target (focus) cell.\n\t *\n\t * The cells are returned in a reverse direction if the selection is backward.\n\t *\n\t * @private\n\t * @param {module:engine/model/element~Element} anchorCell\n\t * @param {module:engine/model/element~Element} targetCell\n\t * @returns {Array.<module:engine/model/element~Element>}\n\t */\n\t_getCellsToSelect( anchorCell, targetCell ) {\n\t\tconst tableUtils = this.editor.plugins.get( 'TableUtils' );\n\t\tconst startLocation = tableUtils.getCellLocation( anchorCell );\n\t\tconst endLocation = tableUtils.getCellLocation( targetCell );\n\n\t\tconst startRow = Math.min( startLocation.row, endLocation.row );\n\t\tconst endRow = Math.max( startLocation.row, endLocation.row );\n\n\t\tconst startColumn = Math.min( startLocation.column, endLocation.column );\n\t\tconst endColumn = Math.max( startLocation.column, endLocation.column );\n\n\t\t// 2-dimensional array of the selected cells to ease flipping the order of cells for backward selections.\n\t\tconst selectionMap = new Array( endRow - startRow + 1 ).fill( null ).map( () => [] );\n\n\t\tconst walkerOptions = {\n\t\t\tstartRow,\n\t\t\tendRow,\n\t\t\tstartColumn,\n\t\t\tendColumn\n\t\t};\n\n\t\tfor ( const { row, cell } of new TableWalker( anchorCell.findAncestor( 'table' ), walkerOptions ) ) {\n\t\t\tselectionMap[ row - startRow ].push( cell );\n\t\t}\n\n\t\tconst flipVertically = endLocation.row < startLocation.row;\n\t\tconst flipHorizontally = endLocation.column < startLocation.column;\n\n\t\tif ( flipVertically ) {\n\t\t\tselectionMap.reverse();\n\t\t}\n\n\t\tif ( flipHorizontally ) {\n\t\t\tselectionMap.forEach( row => row.reverse() );\n\t\t}\n\n\t\treturn {\n\t\t\tcells: selectionMap.flat(),\n\t\t\tbackward: flipVertically || flipHorizontally\n\t\t};\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2021, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module table/tabletoolbar\n */\n\nimport { Plugin } from 'ckeditor5/src/core';\nimport { WidgetToolbarRepository } from 'ckeditor5/src/widget';\nimport { getSelectedTableWidget, getTableWidgetAncestor } from './utils/ui/widget';\n\n/**\n * The table toolbar class. It creates toolbars for the table feature and its content (for now only for the table cell content).\n *\n * The table toolbar shows up when a table widget is selected. Its components (e.g. buttons) are created based on the\n * {@link module:table/table~TableConfig#tableToolbar `table.tableToolbar` configuration option}.\n *\n * Table content toolbar shows up when the selection is inside the content of a table. It creates its component based on the\n * {@link module:table/table~TableConfig#contentToolbar `table.contentToolbar` configuration option}.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class TableToolbar extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ WidgetToolbarRepository ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'TableToolbar';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tafterInit() {\n\t\tconst editor = this.editor;\n\t\tconst t = editor.t;\n\t\tconst widgetToolbarRepository = editor.plugins.get( WidgetToolbarRepository );\n\n\t\tconst tableContentToolbarItems = editor.config.get( 'table.contentToolbar' );\n\n\t\tconst tableToolbarItems = editor.config.get( 'table.tableToolbar' );\n\n\t\tif ( tableContentToolbarItems ) {\n\t\t\twidgetToolbarRepository.register( 'tableContent', {\n\t\t\t\tariaLabel: t( 'Table toolbar' ),\n\t\t\t\titems: tableContentToolbarItems,\n\t\t\t\tgetRelatedElement: getTableWidgetAncestor\n\t\t\t} );\n\t\t}\n\n\t\tif ( tableToolbarItems ) {\n\t\t\twidgetToolbarRepository.register( 'table', {\n\t\t\t\tariaLabel: t( 'Table toolbar' ),\n\t\t\t\titems: tableToolbarItems,\n\t\t\t\tgetRelatedElement: getSelectedTableWidget\n\t\t\t} );\n\t\t}\n\t}\n}\n\n/**\n * Items to be placed in the table content toolbar.\n * The {@link module:table/tabletoolbar~TableToolbar} plugin is required to make this toolbar work.\n *\n * Assuming that you use the {@link module:table/tableui~TableUI} feature, the following toolbar items will be available\n * in {@link module:ui/componentfactory~ComponentFactory}:\n *\n * * `'tableRow'`,\n * * `'tableColumn'`,\n * * `'mergeTableCells'`.\n *\n * You can thus configure the toolbar like this:\n *\n *\t\tconst tableConfig = {\n *\t\t\tcontentToolbar: [ 'tableRow', 'tableColumn', 'mergeTableCells' ]\n *\t\t};\n *\n * Of course, the same buttons can also be used in the\n * {@link module:core/editor/editorconfig~EditorConfig#toolbar main editor toolbar}.\n *\n * Read more about configuring the toolbar in {@link module:core/editor/editorconfig~EditorConfig#toolbar}.\n *\n * @member {Array.<String>} module:table/table~TableConfig#contentToolbar\n */\n\n/**\n * Items to be placed in the table toolbar.\n * The {@link module:table/tabletoolbar~TableToolbar} plugin is required to make this toolbar work.\n *\n * You can thus configure the toolbar like this:\n *\n *\t\tconst tableConfig = {\n *\t\t\ttableToolbar: [ 'blockQuote' ]\n *\t\t};\n *\n * Of course, the same buttons can also be used in the\n * {@link module:core/editor/editorconfig~EditorConfig#toolbar main editor toolbar}.\n *\n * Read more about configuring the toolbar in {@link module:core/editor/editorconfig~EditorConfig#toolbar}.\n *\n * @member {Array.<String>} module:table/table~TableConfig#tableToolbar\n */\n"],"sourceRoot":""}