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{\n\tisUpShift,\n\tisShift,\n} from \"@ui5/webcomponents-base/dist/Keys.js\";\nimport getActiveElement from \"@ui5/webcomponents-base/dist/util/getActiveElement.js\";\nimport UI5Element from \"@ui5/webcomponents-base/dist/UI5Element.js\";\nimport customElement from \"@ui5/webcomponents-base/dist/decorators/customElement.js\";\nimport property from \"@ui5/webcomponents-base/dist/decorators/property.js\";\nimport event from \"@ui5/webcomponents-base/dist/decorators/event.js\";\nimport TableSelectionMode from \"./types/TableSelectionMode.js\";\nimport type Table from \"./Table.js\";\nimport type { ITableFeature } from \"./Table.js\";\nimport type TableRow from \"./TableRow.js\";\nimport type TableRowBase from \"./TableRowBase.js\";\nimport { isSelectionCheckbox, isHeaderSelector, findRowInPath } from \"./TableUtils.js\";\n\n/**\n * @class\n *\n * ### Overview\n *\n * The `ui5-table-selection` component is used inside the `ui5-table` ti add key-based selection capabilities to the `ui5-table`.\n *\n * The component offers three selection modes:\n * * Single - select a single row.\n * * Multiple - select multiple rows.\n * * None - no selection active.\n *\n * As the selection is key-based, `ui5-table-row` components need to define a unique `row-key` property.\n *\n * ### Usage\n *\n * The `ui5-table-selection` component is only used inside the `ui5-table` component as a feature.\n * It has to be slotted inside the `ui5-table` in the `features` slot.\n * The component is not intended to be used as a standalone component.\n *\n * ```html\n * \n * \t\n * \n * ```\n *\n * ### ES6 Module Import\n *\n * `import \"@ui5/webcomponents/dist/TableSelection.js\";`\n *\n * @constructor\n * @extends UI5Element\n * @since 2.0.0\n * @public\n * @experimental This web component is available since 2.0 with an experimental flag and its API and behavior are subject to change.\n */\n@customElement({ tag: \"ui5-table-selection\" })\n\n/**\n * Fired when selection is changed by user interaction.\n *\n * @public\n */\n@event(\"change\")\n\nclass TableSelection extends UI5Element implements ITableFeature {\n\t/**\n\t * Defines the selection mode.\n\t *\n\t * @default \"Multiple\"\n\t * @public\n\t */\n\t@property()\n\tmode: `${TableSelectionMode}` = \"Multiple\";\n\n\t/**\n\t * Defines the selected rows separated by a space.\n\t *\n\t * @default \"\"\n\t * @public\n\t */\n\t@property()\n\tselected = \"\";\n\n\treadonly identifier = \"TableSelection\";\n\t_table?: Table;\n\t_rangeSelection?: {selected: boolean, isUp: boolean | null, rows: TableRow[], isMouse: boolean, shiftPressed: boolean} | null;\n\n\tonTableActivate(table: Table) {\n\t\tthis._table = table;\n\t\tthis._invalidateTableAndRows();\n\t}\n\n\tonExitDOM() {\n\t\tthis.mode = TableSelectionMode.None;\n\t\tthis._invalidateTableAndRows();\n\t\tthis._table = undefined;\n\t}\n\n\tonBeforeRendering() {\n\t\tthis._invalidateTableAndRows();\n\t}\n\n\tisSelectable(): boolean {\n\t\treturn this.mode !== TableSelectionMode.None;\n\t}\n\n\tisMultiSelect(): boolean {\n\t\treturn this.mode === TableSelectionMode.Multiple;\n\t}\n\n\thasRowSelector(): boolean {\n\t\treturn this.mode !== TableSelectionMode.None;\n\t}\n\n\tgetRowIdentifier(row: TableRow): string {\n\t\treturn row.rowKey;\n\t}\n\n\tisSelected(row: TableRowBase): boolean {\n\t\tif (!this._table || !this.isSelectable()) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif (row.isHeaderRow()) {\n\t\t\treturn this.areAllRowsSelected();\n\t\t}\n\n\t\tconst rowIdentifier = this.getRowIdentifier(row as TableRow);\n\t\treturn this.selectedAsArray.includes(rowIdentifier);\n\t}\n\n\thasSelectedRow(): boolean {\n\t\tif (!this._table || !this.isSelectable()) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst selectedArray = this.selectedAsArray;\n\t\treturn this._table.rows.some(row => {\n\t\t\tconst rowIdentifier = this.getRowIdentifier(row);\n\t\t\treturn selectedArray.includes(rowIdentifier);\n\t\t});\n\t}\n\n\tareAllRowsSelected(): boolean {\n\t\tif (!this._table || !this._table.rows.length || this.mode !== TableSelectionMode.Multiple) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst selectedArray = this.selectedAsArray;\n\t\treturn this._table.rows.every(row => {\n\t\t\tconst rowIdentifier = this.getRowIdentifier(row);\n\t\t\treturn selectedArray.includes(rowIdentifier);\n\t\t});\n\t}\n\n\tinformSelectionChange(row: TableRowBase) {\n\t\tif (this._rangeSelection?.isMouse && this._rangeSelection.shiftPressed) {\n\t\t\treturn;\n\t\t}\n\n\t\tif (row.isHeaderRow()) {\n\t\t\tthis._informHeaderRowSelectionChange();\n\t\t} else {\n\t\t\tthis._informRowSelectionChange(row as TableRow);\n\t\t}\n\t}\n\n\tget selectedAsArray(): string[] {\n\t\treturn this.selected.split(\" \").filter(String);\n\t}\n\n\tset selectedAsArray(selectedArray: string[]) {\n\t\tthis.selected = selectedArray.filter(String).join(\" \");\n\t}\n\n\tget selectedAsSet(): Set {\n\t\treturn new Set(this.selectedAsArray);\n\t}\n\n\tset selectedAsSet(selectedSet: Set) {\n\t\tthis.selectedAsArray = [...selectedSet];\n\t}\n\n\t_selectRow(row: TableRow, selected: boolean) {\n\t\tconst rowIdentifier = this.getRowIdentifier(row);\n\t\tif (this.mode === TableSelectionMode.Multiple) {\n\t\t\tconst selectedSet = this.selectedAsSet;\n\t\t\tselectedSet[selected ? \"add\" : \"delete\"](rowIdentifier);\n\t\t\tthis.selectedAsSet = selectedSet;\n\t\t} else {\n\t\t\tthis.selected = selected ? rowIdentifier : \"\";\n\t\t}\n\t}\n\n\t_informRowSelectionChange(row: TableRow) {\n\t\tconst isRowSelected = this.isMultiSelect() ? !this.isSelected(row) : true;\n\t\tthis._selectRow(row, isRowSelected);\n\t\tthis.fireEvent(\"change\");\n\t}\n\n\t_informHeaderRowSelectionChange() {\n\t\tconst isRowSelected = this.areAllRowsSelected();\n\t\tconst selectedSet = this.selectedAsSet;\n\t\tthis._table!.rows.forEach(row => {\n\t\t\tconst rowIdentifier = this.getRowIdentifier(row);\n\t\t\tselectedSet[isRowSelected ? \"delete\" : \"add\"](rowIdentifier);\n\t\t});\n\t\tthis.selectedAsSet = selectedSet;\n\t\tthis.fireEvent(\"change\");\n\t}\n\n\t_invalidateTableAndRows() {\n\t\tif (!this._table) {\n\t\t\treturn;\n\t\t}\n\n\t\tif (!this.isSelectable()) {\n\t\t\tthis.selected = \"\";\n\t\t} else if (!this.isMultiSelect()) {\n\t\t\tthis.selected = this.selectedAsArray.shift() || \"\";\n\t\t}\n\n\t\tthis._table._invalidate++;\n\t\tthis._table.headerRow[0]._invalidate++;\n\t\tthis._table.rows.forEach(row => row._invalidate++);\n\t}\n\n\t_onkeydown(e: KeyboardEvent) {\n\t\tif (!this.isMultiSelect() || !this._table || !e.shiftKey) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst focusedElement = getActiveElement(); // Assumption: The focused element is always the \"next\" row after navigation.\n\n\t\tif (!(focusedElement?.hasAttribute(\"ui5-table-row\") || this._rangeSelection?.isMouse || focusedElement?.hasAttribute(\"ui5-growing-row\"))) {\n\t\t\tthis._stopRangeSelection();\n\t\t\treturn;\n\t\t}\n\n\t\tif (!this._rangeSelection) {\n\t\t\t// If no range selection is active, start one\n\t\t\tthis._startRangeSelection(focusedElement as TableRow);\n\t\t} else if (e.key === \"ArrowUp\" || e.key === \"ArrowDown\") {\n\t\t\tconst change = isUpShift(e) ? -1 : 1;\n\t\t\tthis._handleRangeSelection(focusedElement as TableRow, change);\n\t\t}\n\n\t\tif (this._rangeSelection) {\n\t\t\tthis._rangeSelection.shiftPressed = e.shiftKey;\n\t\t}\n\t}\n\n\t_onkeyup(e: KeyboardEvent, eventOrigin: HTMLElement) {\n\t\tif (!this._table) {\n\t\t\treturn;\n\t\t}\n\n\t\tif (!eventOrigin.hasAttribute(\"ui5-table-row\") || !this._rangeSelection || !isShift(e)) {\n\t\t\t// Stop range selection if a) Shift is relased or b) the event target is not a row or c) the event is not from the selection checkbox\n\t\t\tif (isSelectionCheckbox(e)) {\n\t\t\t\tthis._stopRangeSelection();\n\t\t\t}\n\t\t}\n\n\t\tif (this._rangeSelection) {\n\t\t\tthis._rangeSelection.shiftPressed = e.shiftKey;\n\t\t}\n\t}\n\n\t_onclick(e: MouseEvent) {\n\t\tif (!this._table) {\n\t\t\treturn;\n\t\t}\n\n\t\tif (isHeaderSelector(e)) {\n\t\t\tthis._stopRangeSelection();\n\t\t\treturn;\n\t\t}\n\n\t\tif (!isSelectionCheckbox(e)) {\n\t\t\tthis._stopRangeSelection();\n\t\t\treturn;\n\t\t}\n\n\t\tconst row = findRowInPath(e.composedPath());\n\n\t\tif (e.shiftKey && this._rangeSelection?.isMouse) {\n\t\t\tconst startRow = this._rangeSelection.rows[0];\n\t\t\tconst startIndex = this._table.rows.indexOf(startRow);\n\t\t\tconst endIndex = this._table.rows.indexOf(row);\n\n\t\t\t// When doing a range selection and clicking on an already selected row, the checked status should not change\n\t\t\t// Therefore, we need to manually set the checked attribute again, as clicking it would deselect it and leads to\n\t\t\t// a visual inconsistency.\n\t\t\trow.shadowRoot?.querySelector(\"#selection-component\")?.toggleAttribute(\"checked\", true);\n\n\t\t\tif (startIndex === -1 || endIndex === -1 || row.rowKey === startRow.rowKey || row.rowKey === this._rangeSelection.rows[this._rangeSelection.rows.length - 1].rowKey) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst change = endIndex - startIndex;\n\t\t\tthis._handleRangeSelection(row, change);\n\t\t} else if (row) {\n\t\t\tthis._startRangeSelection(row, true);\n\t\t}\n\t}\n\n\t/**\n\t * Start the range selection and initialises the range selection state\n\t * @param row starting row\n\t * @private\n\t */\n\t_startRangeSelection(row: TableRow, isMouse = false) {\n\t\tconst selected = this.isSelected(row);\n\t\tif (isMouse && !selected) {\n\t\t\t// Do not initiate range selection if the row is not selected\n\t\t\treturn;\n\t\t}\n\n\t\tthis._rangeSelection = {\n\t\t\tselected,\n\t\t\tisUp: null,\n\t\t\trows: [row],\n\t\t\tisMouse,\n\t\t\tshiftPressed: false,\n\t\t};\n\t}\n\n\t/**\n\t * Handles the range selection\n\t * @param targetRow row that is currently focused\n\t * @param change indicates direction\n\t * @private\n\t */\n\t_handleRangeSelection(targetRow: TableRow, change: number) {\n\t\tif (!this._rangeSelection) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst isUp = change > 0;\n\t\tthis._rangeSelection.isUp ??= isUp;\n\n\t\tconst shouldReverseSelection = isUp !== this._rangeSelection.isUp && !this._rangeSelection.isMouse;\n\t\tlet selectionChanged = shouldReverseSelection && this.isSelected(targetRow);\n\n\t\tif (shouldReverseSelection) {\n\t\t\tthis._reverseRangeSelection();\n\t\t} else {\n\t\t\tconst rowIndex = this._table!.rows.indexOf(targetRow);\n\t\t\tconst [startIndex, endIndex] = [rowIndex, rowIndex - change].sort((a, b) => a - b);\n\n\t\t\tselectionChanged = this._table?.rows.slice(startIndex, endIndex + 1).reduce((changed, row) => {\n\t\t\t\tconst isRowNotInSelection = !this._rangeSelection?.rows.includes(row);\n\t\t\t\tconst isRowSelectionDifferent = this.isSelected(row) !== this._rangeSelection!.selected;\n\n\t\t\t\tif (isRowNotInSelection) {\n\t\t\t\t\tthis._rangeSelection?.rows.push(row);\n\t\t\t\t}\n\n\t\t\t\tthis._selectRow(row, this._rangeSelection!.selected);\n\n\t\t\t\treturn changed || isRowSelectionDifferent;\n\t\t\t}, selectionChanged) || false;\n\t\t}\n\n\t\tselectionChanged && this._fireEvent(\"change\");\n\t}\n\n\t_stopRangeSelection() {\n\t\tthis._rangeSelection = null;\n\t}\n\n\t_reverseRangeSelection() {\n\t\tconst row = this._rangeSelection?.rows.pop();\n\t\tif (row) {\n\t\t\tthis._selectRow(row, false);\n\t\t}\n\n\t\tif (this._rangeSelection?.rows.length === 1) {\n\t\t\tthis._rangeSelection.isUp = null;\n\t\t}\n\t}\n}\n\nTableSelection.define();\n\nexport default TableSelection;\n"]}