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dataMap.js
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dataMap.js
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import SheetClip from './../lib/SheetClip/SheetClip';
import { cellMethodLookupFactory } from './helpers/data';
import { columnFactory } from './helpers/setting';
import {
createObjectPropListener,
deepClone,
deepExtend,
deepObjectSize,
duckSchema,
hasOwnProperty,
isObject,
objectEach
} from './helpers/object';
import { extendArray, to2dArray } from './helpers/array';
import Interval from './utils/interval';
import { rangeEach } from './helpers/number';
import MultiMap from './multiMap';
/**
* Utility class that gets and saves data from/to the data source using mapping of columns numbers to object property names
* @todo refactor arguments of methods getRange, getText to be numbers (not objects)
* @todo remove priv, GridSettings from object constructor
*
* @param {Object} instance Instance of Handsontable
* @param {*} priv
* @param {*} GridSettings Grid settings
* @util
* @class DataMap
*/
function DataMap(instance, priv, GridSettings) {
this.instance = instance;
this.priv = priv;
this.GridSettings = GridSettings;
this.dataSource = this.instance.getSettings().data;
this.cachedLength = null;
this.skipCache = false;
this.latestSourceRowsCount = 0;
if (this.dataSource && this.dataSource[0]) {
this.duckSchema = this.recursiveDuckSchema(this.dataSource[0]);
} else {
this.duckSchema = {};
}
this.createMap();
this.interval = Interval.create(() => this.clearLengthCache(), '15fps');
this.instance.addHook('skipLengthCache', delay => this.onSkipLengthCache(delay));
this.onSkipLengthCache(500);
}
DataMap.prototype.DESTINATION_RENDERER = 1;
DataMap.prototype.DESTINATION_CLIPBOARD_GENERATOR = 2;
/**
* @param {Object|Array} object
* @returns {Object|Array}
*/
DataMap.prototype.recursiveDuckSchema = function(object) {
return duckSchema(object);
};
/**
* @param {Object} schema
* @param {Number} lastCol
* @param {Number} parent
* @returns {Number}
*/
DataMap.prototype.recursiveDuckColumns = function(schema, lastCol, parent) {
let lastColumn = lastCol;
let propertyParent = parent;
let prop;
if (typeof lastColumn === 'undefined') {
lastColumn = 0;
propertyParent = '';
}
if (typeof schema === 'object' && !Array.isArray(schema)) {
objectEach(schema, (value, key) => {
if (value === null) {
prop = propertyParent + key;
this.colToPropCache.push(prop);
this.propToColCache.set(prop, lastColumn);
lastColumn += 1;
} else {
lastColumn = this.recursiveDuckColumns(value, lastColumn, `${key}.`);
}
});
}
return lastColumn;
};
DataMap.prototype.createMap = function() {
let i;
const schema = this.getSchema();
if (typeof schema === 'undefined') {
throw new Error('trying to create `columns` definition but you didn\'t provide `schema` nor `data`');
}
this.colToPropCache = [];
this.propToColCache = new MultiMap();
const columns = this.instance.getSettings().columns;
if (columns) {
const maxCols = this.instance.getSettings().maxCols;
let columnsLen = Math.min(maxCols, columns.length);
let filteredIndex = 0;
let columnsAsFunc = false;
const schemaLen = deepObjectSize(schema);
if (typeof columns === 'function') {
columnsLen = schemaLen > 0 ? schemaLen : this.instance.countSourceCols();
columnsAsFunc = true;
}
for (i = 0; i < columnsLen; i++) {
const column = columnsAsFunc ? columns(i) : columns[i];
if (isObject(column)) {
if (typeof column.data !== 'undefined') {
const index = columnsAsFunc ? filteredIndex : i;
this.colToPropCache[index] = column.data;
this.propToColCache.set(column.data, index);
}
filteredIndex += 1;
}
}
} else {
this.recursiveDuckColumns(schema);
}
};
/**
* Returns property name that corresponds with the given column index.
*
* @param {Number} col Visual column index.
* @returns {Number} Physical column index.
*/
DataMap.prototype.colToProp = function(col) {
const physicalColumn = this.instance.runHooks('modifyCol', col);
if (!isNaN(physicalColumn) && this.colToPropCache && typeof this.colToPropCache[physicalColumn] !== 'undefined') {
return this.colToPropCache[physicalColumn];
}
return physicalColumn;
};
/**
* @param {Object} prop
* @fires Hooks#modifyCol
* @returns {*}
*/
DataMap.prototype.propToCol = function(prop) {
let col;
if (typeof this.propToColCache.get(prop) === 'undefined') {
col = prop;
} else {
col = this.propToColCache.get(prop);
}
col = this.instance.runHooks('unmodifyCol', col);
return col;
};
/**
* @returns {Object}
*/
DataMap.prototype.getSchema = function() {
const schema = this.instance.getSettings().dataSchema;
if (schema) {
if (typeof schema === 'function') {
return schema();
}
return schema;
}
return this.duckSchema;
};
/**
* Creates row at the bottom of the data array.
*
* @param {Number} [index] Physical index of the row before which the new row will be inserted.
* @param {Number} [amount=1] An amount of rows to add.
* @param {String} [source] Source of method call.
* @fires Hooks#afterCreateRow
* @returns {Number} Returns number of created rows.
*/
DataMap.prototype.createRow = function(index, amount = 1, source) {
let numberOfCreatedRows = 0;
let rowIndex = index;
if (typeof rowIndex !== 'number' || rowIndex >= this.instance.countSourceRows()) {
rowIndex = this.instance.countSourceRows();
}
const continueProcess = this.instance.runHooks('beforeCreateRow', rowIndex, amount, source);
if (continueProcess === false) {
return 0;
}
const maxRows = this.instance.getSettings().maxRows;
const columnCount = this.instance.countCols();
while (numberOfCreatedRows < amount && this.instance.countSourceRows() < maxRows) {
let row = null;
if (this.instance.dataType === 'array') {
if (this.instance.getSettings().dataSchema) {
// Clone template array
row = deepClone(this.getSchema());
} else {
row = [];
/* eslint-disable no-loop-func */
rangeEach(columnCount - 1, () => row.push(null));
}
} else if (this.instance.dataType === 'function') {
row = this.instance.getSettings().dataSchema(rowIndex);
} else {
row = {};
deepExtend(row, this.getSchema());
}
if (rowIndex === this.instance.countSourceRows()) {
this.dataSource.push(row);
} else {
this.spliceData(rowIndex, 0, row);
}
numberOfCreatedRows += 1;
}
this.instance.runHooks('afterCreateRow', rowIndex, numberOfCreatedRows, source);
this.instance.forceFullRender = true; // used when data was changed
return numberOfCreatedRows;
};
/**
* Creates col at the right of the data array.
*
* @param {Number} [index] Visual index of the column before which the new column will be inserted
* @param {Number} [amount=1] An amount of columns to add.
* @param {String} [source] Source of method call.
* @fires Hooks#afterCreateCol
* @returns {Number} Returns number of created columns
*/
DataMap.prototype.createCol = function(index, amount = 1, source) {
if (!this.instance.isColumnModificationAllowed()) {
throw new Error('Cannot create new column. When data source in an object, ' +
'you can only have as much columns as defined in first data row, data schema or in the \'columns\' setting.' +
'If you want to be able to add new columns, you have to use array datasource.');
}
const rlen = this.instance.countSourceRows();
const data = this.dataSource;
const countColumns = this.instance.countCols();
const columnIndex = typeof index !== 'number' || index >= countColumns ? countColumns : index;
let constructor;
let numberOfCreatedCols = 0;
let currentIndex;
this.instance.runHooks('beforeCreateCol', columnIndex, amount, source);
currentIndex = columnIndex;
const maxCols = this.instance.getSettings().maxCols;
while (numberOfCreatedCols < amount && this.instance.countCols() < maxCols) {
constructor = columnFactory(this.GridSettings, this.priv.columnsSettingConflicts);
if (typeof columnIndex !== 'number' || columnIndex >= this.instance.countCols()) {
if (rlen > 0) {
for (let r = 0; r < rlen; r++) {
if (typeof data[r] === 'undefined') {
data[r] = [];
}
data[r].push(null);
}
} else {
data.push([null]);
}
// Add new column constructor
this.priv.columnSettings.push(constructor);
} else {
for (let row = 0; row < rlen; row++) {
data[row].splice(currentIndex, 0, null);
}
// Add new column constructor at given index
this.priv.columnSettings.splice(currentIndex, 0, constructor);
}
numberOfCreatedCols += 1;
currentIndex += 1;
}
this.instance.runHooks('afterCreateCol', columnIndex, numberOfCreatedCols, source);
this.instance.forceFullRender = true; // used when data was changed
return numberOfCreatedCols;
};
/**
* Removes row from the data array.
*
* @param {Number} [index] Visual index of the row to be removed. If not provided, the last row will be removed
* @param {Number} [amount=1] Amount of the rows to be removed. If not provided, one row will be removed
* @param {String} [source] Source of method call.
* @fires Hooks#beforeRemoveRow
* @fires Hooks#afterRemoveRow
*/
DataMap.prototype.removeRow = function(index, amount = 1, source) {
let rowIndex = typeof index !== 'number' ? -amount : index;
const rowsAmount = this.instance.runHooks('modifyRemovedAmount', amount, rowIndex);
rowIndex = (this.instance.countSourceRows() + rowIndex) % this.instance.countSourceRows();
const logicRows = this.visualRowsToPhysical(rowIndex, rowsAmount);
const actionWasNotCancelled = this.instance.runHooks('beforeRemoveRow', rowIndex, rowsAmount, logicRows, source);
if (actionWasNotCancelled === false) {
return;
}
const data = this.dataSource;
const newData = this.filterData(rowIndex, rowsAmount);
if (newData) {
data.length = 0;
Array.prototype.push.apply(data, newData);
}
this.instance.runHooks('afterRemoveRow', rowIndex, rowsAmount, logicRows, source);
this.instance.forceFullRender = true; // used when data was changed
};
/**
* Removes column from the data array.
*
* @param {Number} [index] Visual index of the column to be removed. If not provided, the last column will be removed
* @param {Number} [amount=1] Amount of the columns to be removed. If not provided, one column will be removed
* @param {String} [source] Source of method call.
* @fires Hooks#beforeRemoveCol
* @fires Hooks#afterRemoveCol
*/
DataMap.prototype.removeCol = function(index, amount = 1, source) {
if (this.instance.dataType === 'object' || this.instance.getSettings().columns) {
throw new Error('cannot remove column with object data source or columns option specified');
}
let columnIndex = typeof index !== 'number' ? -amount : index;
columnIndex = (this.instance.countCols() + columnIndex) % this.instance.countCols();
const logicColumns = this.visualColumnsToPhysical(columnIndex, amount);
const descendingLogicColumns = logicColumns.slice(0).sort((a, b) => b - a);
const actionWasNotCancelled = this.instance.runHooks('beforeRemoveCol', columnIndex, amount, logicColumns, source);
if (actionWasNotCancelled === false) {
return;
}
let isTableUniform = true;
const removedColumnsCount = descendingLogicColumns.length;
const data = this.dataSource;
for (let c = 0; c < removedColumnsCount; c++) {
if (isTableUniform && logicColumns[0] !== logicColumns[c] - c) {
isTableUniform = false;
}
}
if (isTableUniform) {
for (let r = 0, rlen = this.instance.countSourceRows(); r < rlen; r++) {
data[r].splice(logicColumns[0], amount);
}
} else {
for (let r = 0, rlen = this.instance.countSourceRows(); r < rlen; r++) {
for (let c = 0; c < removedColumnsCount; c++) {
data[r].splice(descendingLogicColumns[c], 1);
}
}
for (let c = 0; c < removedColumnsCount; c++) {
this.priv.columnSettings.splice(logicColumns[c], 1);
}
}
this.instance.runHooks('afterRemoveCol', columnIndex, amount, logicColumns, source);
this.instance.forceFullRender = true; // used when data was changed
};
/**
* Add/Removes data from the column.
*
* @param {Number} col Physical index of column in which do you want to do splice
* @param {Number} index Index at which to start changing the array. If negative, will begin that many elements from the end
* @param {Number} amount An integer indicating the number of old array elements to remove. If amount is 0, no elements are removed
* @param {Array} [elements]
* @returns {Array} Returns removed portion of columns
*/
DataMap.prototype.spliceCol = function(col, index, amount, ...elements) {
const colData = this.instance.getDataAtCol(col);
const removed = colData.slice(index, index + amount);
const after = colData.slice(index + amount);
extendArray(elements, after);
let i = 0;
while (i < amount) {
elements.push(null); // add null in place of removed elements
i += 1;
}
to2dArray(elements);
this.instance.populateFromArray(index, col, elements, null, null, 'spliceCol');
return removed;
};
/**
* Add/Removes data from the row.
*
* @param {Number} row Physical index of row in which do you want to do splice
* @param {Number} index Index at which to start changing the array. If negative, will begin that many elements from the end.
* @param {Number} amount An integer indicating the number of old array elements to remove. If amount is 0, no elements are removed.
* @param {Array} [elements]
* @returns {Array} Returns removed portion of rows
*/
DataMap.prototype.spliceRow = function(row, index, amount, ...elements) {
const rowData = this.instance.getSourceDataAtRow(row);
const removed = rowData.slice(index, index + amount);
const after = rowData.slice(index + amount);
extendArray(elements, after);
let i = 0;
while (i < amount) {
elements.push(null); // add null in place of removed elements
i += 1;
}
this.instance.populateFromArray(row, index, [elements], null, null, 'spliceRow');
return removed;
};
/**
* Add/remove row(s) to/from the data source.
*
* @param {Number} index Physical index of the element to remove.
* @param {Number} amount Number of rows to add/remove.
* @param {Object} element Row to add.
*/
DataMap.prototype.spliceData = function(index, amount, element) {
const continueSplicing = this.instance.runHooks('beforeDataSplice', index, amount, element);
if (continueSplicing !== false) {
this.dataSource.splice(index, amount, element);
}
};
/**
* Filter unwanted data elements from the data source.
*
* @param {Number} index Visual index of the element to remove.
* @param {Number} amount Number of rows to add/remove.
* @returns {Array}
*/
DataMap.prototype.filterData = function(index, amount) {
const physicalRows = this.visualRowsToPhysical(index, amount);
const continueSplicing = this.instance.runHooks('beforeDataFilter', index, amount, physicalRows);
if (continueSplicing !== false) {
const newData = this.dataSource.filter((row, rowIndex) => physicalRows.indexOf(rowIndex) === -1);
return newData;
}
};
/**
* Returns single value from the data array.
*
* @param {Number} row Visual row index.
* @param {Number} prop
*/
DataMap.prototype.get = function(row, prop) {
const physicalRow = this.instance.runHooks('modifyRow', row);
let dataRow = this.dataSource[physicalRow];
// TODO: To remove, use 'modifyData' hook instead (see below)
const modifiedRowData = this.instance.runHooks('modifyRowData', physicalRow);
dataRow = isNaN(modifiedRowData) ? modifiedRowData : dataRow;
//
let value = null;
// try to get value under property `prop` (includes dot)
if (dataRow && dataRow.hasOwnProperty && hasOwnProperty(dataRow, prop)) {
value = dataRow[prop];
} else if (typeof prop === 'string' && prop.indexOf('.') > -1) {
const sliced = prop.split('.');
let out = dataRow;
if (!out) {
return null;
}
for (let i = 0, ilen = sliced.length; i < ilen; i++) {
out = out[sliced[i]];
if (typeof out === 'undefined') {
return null;
}
}
value = out;
} else if (typeof prop === 'function') {
/**
* allows for interacting with complex structures, for example
* d3/jQuery getter/setter properties:
*
* {columns: [{
* data: function(row, value){
* if(arguments.length === 1){
* return row.property();
* }
* row.property(value);
* }
* }]}
*/
value = prop(this.dataSource.slice(physicalRow, physicalRow + 1)[0]);
}
if (this.instance.hasHook('modifyData')) {
const valueHolder = createObjectPropListener(value);
this.instance.runHooks('modifyData', physicalRow, this.propToCol(prop), valueHolder, 'get');
if (valueHolder.isTouched()) {
value = valueHolder.value;
}
}
return value;
};
const copyableLookup = cellMethodLookupFactory('copyable', false);
/**
* Returns single value from the data array (intended for clipboard copy to an external application).
*
* @param {Number} row Physical row index.
* @param {Number} prop
* @returns {String}
*/
DataMap.prototype.getCopyable = function(row, prop) {
if (copyableLookup.call(this.instance, row, this.propToCol(prop))) {
return this.get(row, prop);
}
return '';
};
/**
* Saves single value to the data array.
*
* @param {Number} row Visual row index.
* @param {Number} prop
* @param {String} value
* @param {String} [source] Source of hook runner.
*/
DataMap.prototype.set = function(row, prop, value, source) {
const physicalRow = this.instance.runHooks('modifyRow', row, source || 'datamapGet');
let newValue = value;
let dataRow = this.dataSource[physicalRow];
// TODO: To remove, use 'modifyData' hook instead (see below)
const modifiedRowData = this.instance.runHooks('modifyRowData', physicalRow);
dataRow = isNaN(modifiedRowData) ? modifiedRowData : dataRow;
//
if (this.instance.hasHook('modifyData')) {
const valueHolder = createObjectPropListener(newValue);
this.instance.runHooks('modifyData', physicalRow, this.propToCol(prop), valueHolder, 'set');
if (valueHolder.isTouched()) {
newValue = valueHolder.value;
}
}
// try to set value under property `prop` (includes dot)
if (dataRow && dataRow.hasOwnProperty && hasOwnProperty(dataRow, prop)) {
dataRow[prop] = newValue;
} else if (typeof prop === 'string' && prop.indexOf('.') > -1) {
const sliced = prop.split('.');
let out = dataRow;
let i = 0;
let ilen;
for (i = 0, ilen = sliced.length - 1; i < ilen; i++) {
if (typeof out[sliced[i]] === 'undefined') {
out[sliced[i]] = {};
}
out = out[sliced[i]];
}
out[sliced[i]] = newValue;
} else if (typeof prop === 'function') {
/* see the `function` handler in `get` */
prop(this.dataSource.slice(physicalRow, physicalRow + 1)[0], newValue);
} else {
dataRow[prop] = newValue;
}
};
/**
* This ridiculous piece of code maps rows Id that are present in table data to those displayed for user.
* The trick is, the physical row id (stored in settings.data) is not necessary the same
* as the visual (displayed) row id (e.g. when sorting is applied).
*
* @param {Number} index Visual row index.
* @param {Number} amount
* @fires Hooks#modifyRow
* @returns {Number}
*/
DataMap.prototype.visualRowsToPhysical = function(index, amount) {
const totalRows = this.instance.countSourceRows();
const logicRows = [];
let physicRow = (totalRows + index) % totalRows;
let rowsToRemove = amount;
let row;
while (physicRow < totalRows && rowsToRemove) {
row = this.instance.runHooks('modifyRow', physicRow);
logicRows.push(row);
rowsToRemove -= 1;
physicRow += 1;
}
return logicRows;
};
/**
*
* @param index Visual column index.
* @param amount
* @returns {Array}
*/
DataMap.prototype.visualColumnsToPhysical = function(index, amount) {
const totalCols = this.instance.countCols();
let physicalCol = (totalCols + index) % totalCols;
const visualCols = [];
let colsToRemove = amount;
while (physicalCol < totalCols && colsToRemove) {
const col = this.instance.runHooks('modifyCol', physicalCol);
visualCols.push(col);
colsToRemove -= 1;
physicalCol += 1;
}
return visualCols;
};
/**
* Clears the data array.
*/
DataMap.prototype.clear = function() {
for (let r = 0; r < this.instance.countSourceRows(); r++) {
for (let c = 0; c < this.instance.countCols(); c++) {
this.set(r, this.colToProp(c), '');
}
}
};
/**
* Clear cached data length.
*/
DataMap.prototype.clearLengthCache = function() {
this.cachedLength = null;
};
/**
* Get data length.
*
* @returns {Number}
*/
DataMap.prototype.getLength = function() {
const maxRowsFromSettings = this.instance.getSettings().maxRows;
let maxRows;
if (maxRowsFromSettings < 0 || maxRowsFromSettings === 0) {
maxRows = 0;
} else {
maxRows = maxRowsFromSettings || Infinity;
}
let length = this.instance.countSourceRows();
if (this.instance.hasHook('modifyRow')) {
let reValidate = this.skipCache;
this.interval.start();
if (length !== this.latestSourceRowsCount) {
reValidate = true;
}
this.latestSourceRowsCount = length;
if (this.cachedLength === null || reValidate) {
rangeEach(length - 1, (row) => {
const physicalRow = this.instance.runHooks('modifyRow', row);
if (physicalRow === null) {
length -= 1;
}
});
this.cachedLength = length;
} else {
length = this.cachedLength;
}
} else {
this.interval.stop();
}
return Math.min(length, maxRows);
};
/**
* Returns the data array.
*
* @returns {Array}
*/
DataMap.prototype.getAll = function() {
const start = {
row: 0,
col: 0,
};
const end = {
row: Math.max(this.instance.countSourceRows() - 1, 0),
col: Math.max(this.instance.countCols() - 1, 0),
};
if (start.row - end.row === 0 && !this.instance.countSourceRows()) {
return [];
}
return this.getRange(start, end, DataMap.prototype.DESTINATION_RENDERER);
};
/**
* Returns data range as array.
*
* @param {Object} [start] Start selection position. Visual indexes.
* @param {Object} [end] End selection position. Visual indexes.
* @param {Number} destination Destination of datamap.get
* @returns {Array}
*/
DataMap.prototype.getRange = function(start, end, destination) {
const output = [];
let r;
let c;
let row;
const maxRows = this.instance.getSettings().maxRows;
const maxCols = this.instance.getSettings().maxCols;
if (maxRows === 0 || maxCols === 0) {
return [];
}
const getFn = destination === this.DESTINATION_CLIPBOARD_GENERATOR ? this.getCopyable : this.get;
const rlen = Math.min(Math.max(maxRows - 1, 0), Math.max(start.row, end.row));
const clen = Math.min(Math.max(maxCols - 1, 0), Math.max(start.col, end.col));
for (r = Math.min(start.row, end.row); r <= rlen; r++) {
row = [];
const physicalRow = this.instance.runHooks('modifyRow', r);
for (c = Math.min(start.col, end.col); c <= clen; c++) {
if (physicalRow === null) {
break;
}
row.push(getFn.call(this, r, this.colToProp(c)));
}
if (physicalRow !== null) {
output.push(row);
}
}
return output;
};
/**
* Return data as text (tab separated columns).
*
* @param {Object} [start] Start selection position. Visual indexes.
* @param {Object} [end] End selection position. Visual indexes.
* @returns {String}
*/
DataMap.prototype.getText = function(start, end) {
return SheetClip.stringify(this.getRange(start, end, this.DESTINATION_RENDERER));
};
/**
* Return data as copyable text (tab separated columns intended for clipboard copy to an external application).
*
* @param {Object} [start] Start selection position. Visual indexes.
* @param {Object} [end] End selection position. Visual indexes.
* @returns {String}
*/
DataMap.prototype.getCopyableText = function(start, end) {
return SheetClip.stringify(this.getRange(start, end, this.DESTINATION_CLIPBOARD_GENERATOR));
};
/**
* `skipLengthCache` callback.
* @private
* @param {Number} delay Time of the delay in milliseconds.
*/
DataMap.prototype.onSkipLengthCache = function(delay) {
this.skipCache = true;
setTimeout(() => {
this.skipCache = false;
}, delay);
};
/**
* Destroy instance.
*/
DataMap.prototype.destroy = function() {
this.interval.stop();
this.interval = null;
this.instance = null;
this.priv = null;
this.GridSettings = null;
this.dataSource = null;
this.cachedLength = null;
this.duckSchema = null;
};
export default DataMap;