多维表格
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import type { MaybeRef } from '@vueuse/core'
import { UITypes } from 'nocodb-sdk'
import { message, reactive, unref, useCopy, useEventListener, useI18n } from '#imports'
interface SelectedBlock {
row: number | null
col: number | null
}
/**
* Utility to help with multi-selecting rows/cells in the smartsheet
*/
export function useMultiSelect(
fields: MaybeRef<any[]>,
data: MaybeRef<any[]>,
editEnabled: MaybeRef<boolean>,
isPkAvail: MaybeRef<boolean>,
clearCell: Function,
makeEditable: Function,
) {
const { t } = useI18n()
const { copy } = useCopy()
const selected = reactive<SelectedBlock>({ row: null, col: null })
// save the first and the last column where the mouse is down while the value isSelectedRow is true
const selectedRows = reactive({ startCol: NaN, endCol: NaN, startRow: NaN, endRow: NaN })
// calculate the min and the max column where the mouse is down while the value isSelectedRow is true
const rangeRows = reactive({ minRow: NaN, maxRow: NaN, minCol: NaN, maxCol: NaN })
// check if mouse is down or up false=mouseup and true=mousedown
let isSelectedBlock = $ref(false)
const columnLength = $computed(() => unref(fields)?.length)
function selectCell(row: number, col: number) {
clearRangeRows()
selected.row = row
selected.col = col
}
function selectBlock(row: number, col: number) {
// if selected.col and selected.row are null and isSelectedBlock is true that means you are selecting a block
if (selected.col === null || selected.row === null) {
if (isSelectedBlock) {
// save the next value after the selectionStart
selectedRows.endCol = col
selectedRows.endRow = row
}
} else if (selected.col !== col || selected.row !== row) {
// if selected.col and selected.row is not null but the selected col and row is not equal at the row and col where the mouse is clicking
// and isSelectedBlock is true that means you are selecting a block
if (isSelectedBlock) {
selected.col = null
selected.row = null
// save the next value after the selectionStart
selectedRows.endCol = col
selectedRows.endRow = row
}
}
}
function selectedRange(row: number, col: number) {
if (
!isNaN(selectedRows.startRow) &&
!isNaN(selectedRows.startCol) &&
!isNaN(selectedRows.endRow) &&
!isNaN(selectedRows.endCol)
) {
// check if column selection is up or down
rangeRows.minRow = Math.min(selectedRows.startRow, selectedRows.endRow)
rangeRows.maxRow = Math.max(selectedRows.startRow, selectedRows.endRow)
rangeRows.minCol = Math.min(selectedRows.startCol, selectedRows.endCol)
rangeRows.maxCol = Math.max(selectedRows.startCol, selectedRows.endCol)
// return if the column is in between the selection
return col >= rangeRows.minCol && col <= rangeRows.maxCol && row >= rangeRows.minRow && row <= rangeRows.maxRow
} else {
return false
}
}
function startSelectRange(event: MouseEvent, row: number, col: number) {
// if editEnabled but the selected col or the selected row is not equal like the actual row or col, enabled selected multiple rows
if (unref(editEnabled) && (selected.col !== col || selected.row !== row)) {
event.preventDefault()
} else if (!unref(editEnabled)) {
// if editEnabled is not true, enabled selected multiple rows
event.preventDefault()
}
// clear the selection when the mouse is down
selectedRows.startCol = NaN
selectedRows.endCol = NaN
selectedRows.startRow = NaN
selectedRows.endRow = NaN
// asing where the selection start
selectedRows.startCol = col
selectedRows.startRow = row
isSelectedBlock = true
}
function clearRangeRows() {
// when the selection starts or ends or when enter/arrow/tab is pressed
// this clear the previous selection
rangeRows.minCol = NaN
rangeRows.maxCol = NaN
rangeRows.minRow = NaN
rangeRows.maxRow = NaN
selectedRows.startRow = NaN
selectedRows.startCol = NaN
selectedRows.endRow = NaN
selectedRows.endCol = NaN
}
useEventListener(document, 'mouseup', (e) => {
// if the editEnabled is false prevent the mouseup event for not select text
if (!unref(editEnabled)) {
e.preventDefault()
}
isSelectedBlock = false
})
const onKeyDown = async (e: KeyboardEvent) => {
if (
!isNaN(selectedRows.startRow) &&
!isNaN(selectedRows.startCol) &&
!isNaN(selectedRows.endRow) &&
!isNaN(selectedRows.endCol)
) {
// In case the user press tabs or arrows keys
selected.row = selectedRows.startRow
selected.col = selectedRows.startCol
}
if (selected.row === null || selected.col === null) return
/** on tab key press navigate through cells */
switch (e.key) {
case 'Tab':
e.preventDefault()
clearRangeRows()
if (e.shiftKey) {
if (selected.col > 0) {
selected.col--
} else if (selected.row > 0) {
selected.row--
selected.col = unref(columnLength) - 1
}
} else {
if (selected.col < unref(columnLength) - 1) {
selected.col++
} else if (selected.row < unref(data).length - 1) {
selected.row++
selected.col = 0
}
}
break
/** on enter key press make cell editable */
case 'Enter':
e.preventDefault()
clearRangeRows()
makeEditable(unref(data)[selected.row], unref(fields)[selected.col])
break
/** on delete key press clear cell */
case 'Delete':
if (!unref(editEnabled)) {
e.preventDefault()
clearRangeRows()
await clearCell(selected as { row: number; col: number })
}
break
/** on arrow key press navigate through cells */
case 'ArrowRight':
e.preventDefault()
clearRangeRows()
if (selected.col < unref(columnLength) - 1) selected.col++
break
case 'ArrowLeft':
clearRangeRows()
e.preventDefault()
clearRangeRows()
if (selected.col > 0) selected.col--
break
case 'ArrowUp':
clearRangeRows()
e.preventDefault()
clearRangeRows()
if (selected.row > 0) selected.row--
break
case 'ArrowDown':
clearRangeRows()
e.preventDefault()
clearRangeRows()
if (selected.row < unref(data).length - 1) selected.row++
break
default:
{
const rowObj = unref(data)[selected.row]
const columnObj = unref(fields)[selected.col]
let cptext = '' // variable for save the text to be copy
if (!isNaN(rangeRows.minRow) && !isNaN(rangeRows.maxRow) && !isNaN(rangeRows.minCol) && !isNaN(rangeRows.maxCol)) {
const cprows = unref(data).slice(rangeRows.minRow, rangeRows.maxRow + 1) // slice the selected rows for copy
const cpcols = unref(fields).slice(rangeRows.minCol, rangeRows.maxCol + 1) // slice the selected cols for copy
cprows.forEach((row) => {
cpcols.forEach((col) => {
// todo: JSON stringify the attachment cell and LTAR contents for copy
// filter attachment cells and LATR cells from copy
if (col.uidt === UITypes.Attachment || col.uidt === UITypes.LinkToAnotherRecord) {
cptext = `${cptext} ${row.row[col.title]} \t`
}
})
cptext = `${cptext.trim()}\n`
})
cptext.trim()
} else {
cptext = rowObj.row[columnObj.title] || ''
}
if ((!unref(editEnabled) && e.metaKey) || e.ctrlKey) {
switch (e.keyCode) {
// copy - ctrl/cmd +c
case 67:
await copy(cptext)
break
}
}
if (unref(editEnabled) || e.ctrlKey || e.altKey || e.metaKey) {
return
}
/** on letter key press make cell editable and empty */
if (e.key.length === 1) {
if (!unref(isPkAvail) && !rowObj.rowMeta.new) {
// Update not allowed for table which doesn't have primary Key
return message.info(t('msg.info.updateNotAllowedWithoutPK'))
}
if (makeEditable(rowObj, columnObj)) {
rowObj.row[columnObj.title] = ''
}
// editEnabled = true
}
}
break
}
}
useEventListener(document, 'keydown', onKeyDown)
return {
selectCell,
selectBlock,
selectedRange,
clearRangeRows,
startSelectRange,
selected,
selectedRows,
rangeRows,
}
}