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57 lines
1.7 KiB
57 lines
1.7 KiB
const _ = require('../../../utils/under-dash');
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const Range = require('../../../doc/range');
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const colCache = require('../../../utils/col-cache');
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const Enums = require('../../../doc/enums');
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class Merges {
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constructor() {
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// optional mergeCells is array of ranges (like the xml)
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this.merges = {};
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}
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add(merge) {
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// merge is {address, master}
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if (this.merges[merge.master]) {
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this.merges[merge.master].expandToAddress(merge.address);
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} else {
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const range = `${merge.master}:${merge.address}`;
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this.merges[merge.master] = new Range(range);
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}
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}
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get mergeCells() {
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return _.map(this.merges, merge => merge.range);
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}
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reconcile(mergeCells, rows) {
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// reconcile merge list with merge cells
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_.each(mergeCells, merge => {
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const dimensions = colCache.decode(merge);
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for (let i = dimensions.top; i <= dimensions.bottom; i++) {
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const row = rows[i - 1];
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for (let j = dimensions.left; j <= dimensions.right; j++) {
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const cell = row.cells[j - 1];
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if (!cell) {
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// nulls are not included in document - so if master cell has no value - add a null one here
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row.cells[j] = {
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type: Enums.ValueType.Null,
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address: colCache.encodeAddress(i, j),
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};
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} else if (cell.type === Enums.ValueType.Merge) {
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cell.master = dimensions.tl;
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}
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}
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}
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});
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}
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getMasterAddress(address) {
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// if address has been merged, return its master's address. Assumes reconcile has been called
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const range = this.hash[address];
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return range && range.tl;
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}
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}
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module.exports = Merges;
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