File size: 5,770 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 |
/*
This hook handles the dragging and dropping effects that occur for columns.
*/
import { useDrop } from 'react-dnd';
const getColModel = (headCellRefs, columnOrder, columns) => {
let colModel = [];
let leftMostCell = headCellRefs[0] ? headCellRefs[0] : null; // left most cell is the select cell, if it exists
if (leftMostCell === null) {
leftMostCell = { offsetLeft: Infinity };
let headCells = Object.entries(headCellRefs);
headCells.forEach(([key, item], idx) => {
if (item && item.offsetLeft < leftMostCell.offsetLeft) {
leftMostCell = item;
}
});
if (leftMostCell.offsetLeft === Infinity) {
leftMostCell = { offsetParent: 0, offsetWidth: 0, offsetLeft: 0 };
}
}
let ii = 0,
parentOffsetLeft = 0,
offsetParent = leftMostCell.offsetParent;
while (offsetParent) {
parentOffsetLeft = parentOffsetLeft + (offsetParent.offsetLeft || 0) - (offsetParent.scrollLeft || 0);
offsetParent = offsetParent.offsetParent;
ii++;
if (ii > 1000) break;
}
// if the select cell is present, make sure it is apart of the column model
if (headCellRefs[0]) {
colModel[0] = {
left: parentOffsetLeft + leftMostCell.offsetLeft,
width: leftMostCell.offsetWidth,
columnIndex: null,
ref: leftMostCell,
};
}
columnOrder.forEach((colIdx, idx) => {
let col = headCellRefs[colIdx + 1];
let cmIndx = colModel.length - 1;
if (!(columns[colIdx] && columns[colIdx].display !== 'true')) {
let prevLeft =
cmIndx !== -1 ? colModel[cmIndx].left + colModel[cmIndx].width : parentOffsetLeft + leftMostCell.offsetLeft;
colModel.push({
left: prevLeft,
width: col.offsetWidth,
columnIndex: colIdx,
ref: col,
});
}
});
return colModel;
};
const reorderColumns = (prevColumnOrder, columnIndex, newPosition) => {
let columnOrder = prevColumnOrder.slice();
let srcIndex = columnOrder.indexOf(columnIndex);
let targetIndex = columnOrder.indexOf(newPosition);
if (srcIndex !== -1 && targetIndex !== -1) {
let newItem = columnOrder[srcIndex];
columnOrder = [...columnOrder.slice(0, srcIndex), ...columnOrder.slice(srcIndex + 1)];
columnOrder = [...columnOrder.slice(0, targetIndex), newItem, ...columnOrder.slice(targetIndex)];
}
return columnOrder;
};
const handleHover = opts => {
const {
item,
mon,
index,
headCellRefs,
updateColumnOrder,
columnOrder,
transitionTime = 300,
tableRef,
tableId,
timers,
columns,
} = opts;
let hoverIdx = mon.getItem().colIndex;
if (headCellRefs !== mon.getItem().headCellRefs) return;
if (hoverIdx !== index) {
let reorderedCols = reorderColumns(columnOrder, mon.getItem().colIndex, index);
let newColModel = getColModel(headCellRefs, reorderedCols, columns);
let newX = mon.getClientOffset().x;
let modelIdx = -1;
for (let ii = 0; ii < newColModel.length; ii++) {
if (newX > newColModel[ii].left && newX < newColModel[ii].left + newColModel[ii].width) {
modelIdx = newColModel[ii].columnIndex;
break;
}
}
if (modelIdx === mon.getItem().colIndex) {
clearTimeout(timers.columnShift);
let curColModel = getColModel(headCellRefs, columnOrder, columns);
let transitions = [];
newColModel.forEach(item => {
transitions[item.columnIndex] = item.left;
});
curColModel.forEach(item => {
transitions[item.columnIndex] = transitions[item.columnIndex] - item.left;
});
for (let idx = 1; idx < columnOrder.length; idx++) {
let colIndex = columnOrder[idx];
if (columns[colIndex] && columns[colIndex].display !== 'true') {
// skip
} else {
if (headCellRefs[idx]) headCellRefs[idx].style.transition = '280ms';
if (headCellRefs[idx]) headCellRefs[idx].style.transform = 'translateX(' + transitions[idx - 1] + 'px)';
}
}
let allElms = [];
let dividers = [];
for (let ii = 0; ii < columnOrder.length; ii++) {
let elms = tableRef
? tableRef.querySelectorAll('[data-colindex="' + ii + '"][data-tableid="' + tableId + '"]')
: [];
for (let jj = 0; jj < elms.length; jj++) {
elms[jj].style.transition = transitionTime + 'ms';
elms[jj].style.transform = 'translateX(' + transitions[ii] + 'px)';
allElms.push(elms[jj]);
}
let divider = tableRef
? tableRef.querySelectorAll('[data-divider-index="' + (ii + 1) + '"][data-tableid="' + tableId + '"]')
: [];
for (let jj = 0; jj < divider.length; jj++) {
divider[jj].style.transition = transitionTime + 'ms';
divider[jj].style.transform = 'translateX(' + transitions[columnOrder[ii]] + 'px)';
dividers.push(divider[jj]);
}
}
let newColIndex = mon.getItem().colIndex;
timers.columnShift = setTimeout(() => {
allElms.forEach(item => {
item.style.transition = '0s';
item.style.transform = 'translateX(0)';
});
dividers.forEach(item => {
item.style.transition = '0s';
item.style.transform = 'translateX(0)';
});
updateColumnOrder(reorderedCols, newColIndex, index);
}, transitionTime);
}
}
};
const useColumnDrop = opts => {
const [{ isOver, canDrop }, drop] = useDrop({
accept: 'HEADER',
drop: drop,
hover: (item, mon) => handleHover(Object.assign({}, opts, { item, mon })),
collect: mon => ({
isOver: !!mon.isOver(),
canDrop: !!mon.canDrop(),
}),
});
return [drop];
};
export { getColModel, reorderColumns, handleHover };
export default useColumnDrop;
|