scinote-web/vendor/assets/javascripts/handsontable.formula.js
2021-03-29 11:49:19 +02:00

490 lines
14 KiB
JavaScript

/*
Licensed under the MIT license
Copyright (c) 2014 handsontable
*/
(function(Handsontable) {
'use strict';
// [MODIFICATION] (sci 2588)
var formulasResults = {};
// _!_MODIFICATION
function HandsontableFormula() {
var isFormula = function(value) {
if (value) {
if (value[0] === '=') {
return true;
}
}
return false;
};
// [MODIFICATION] (sci 2588)
var beforeRender = function (isForced) {
formulasResults = {};
var data = this.getData();
for (var i = 0; i < data.length; ++i) {
for (var j = 0; j < data[i].length; ++j) {
var value = data[i][j];
if (value && value[0] === '=') {
var cellId = this.plugin.utils.translateCellCoords({row: i, col: j});
this.plugin.matrix.removeItem(cellId);
}
}
}
};
// _!_MODIFICATION
var formulaRenderer = function(instance, TD, row, col, prop, value, cellProperties) {
if (instance.formulasEnabled && isFormula(value)) {
// translate coordinates into cellId
var cellId = instance.plugin.utils.translateCellCoords({
row: row,
col: col
}),
prevFormula = null,
formula = null,
needUpdate = false,
error, result;
if (!cellId) {
return;
}
// get cell data
var item = instance.plugin.matrix.getItem(cellId);
if (item) {
needUpdate = !! item.needUpdate;
if (item.error) {
prevFormula = item.formula;
error = item.error;
if (needUpdate) {
error = null;
}
}
}
// check if typed formula or cell value should be recalculated
if ((value && value[0] === '=') || needUpdate) {
// [MODIFICATION] (sci 2588)
if (formulasResults[cellId] === undefined) {
// _!_MODIFICATION
formula = value.substr(1).toUpperCase();
if (!error || formula !== prevFormula) {
var currentItem = item;
if (!currentItem) {
// define item to rulesJS matrix if not exists
item = {
id: cellId,
formula: formula
};
// add item to matrix
currentItem = instance.plugin.matrix.addItem(item);
}
// parse formula
var newValue = instance.plugin.parse(formula, {
row: row,
col: col,
id: cellId
});
// check if update needed
needUpdate = (newValue.error === '#NEED_UPDATE');
// update item value and error
instance.plugin.matrix.updateItem(currentItem, {
formula: formula,
value: newValue.result,
error: newValue.error,
needUpdate: needUpdate
});
error = newValue.error;
result = newValue.result;
// update cell value in hot
value = error || result;
}
// [MODIFICATION] (sci 2588)
} else {
var newValue = formulasResults[cellId];
error = newValue.error;
result = newValue.result;
value = error || result;
}
// _!_MODIFICATION
}
if (error) {
// clear cell value
if (!value) {
// reset error
error = null;
} else {
// show error
value = error;
}
}
}
// apply changes
if (cellProperties.type === 'numeric') {
numericCell.renderer.apply(this, [instance, TD, row, col, prop, value, cellProperties]);
} else {
textCell.renderer.apply(this, [instance, TD, row, col, prop, value, cellProperties]);
}
};
var afterChange = function(changes, source) {
var instance = this;
if (!instance.formulasEnabled) {
return;
}
if (source === 'edit' || source === 'undo' || source === 'autofill') {
var rerender = false;
changes.forEach(function(item) {
var row = item[0],
col = item[1],
prevValue = item[2],
value = item[3];
var cellId = instance.plugin.utils.translateCellCoords({
row: row,
col: col
});
// if changed value, all references cells should be recalculated
if (value[0] !== '=' || prevValue !== value) {
instance.plugin.matrix.removeItem(cellId);
// get referenced cells
var deps = instance.plugin.matrix.getDependencies(cellId);
// update cells
deps.forEach(function(itemId) {
instance.plugin.matrix.updateItem(itemId, {
needUpdate: true
});
});
rerender = true;
}
});
if (rerender) {
instance.render();
}
}
};
var beforeAutofillInsidePopulate = function(index, direction, data, deltas, iterators, selected) {
var instance = this;
var r = index.row,
c = index.col,
value = data[r][c],
delta = 0,
rlength = data.length, // rows
clength = data ? data[0].length : 0; //cols
if (value[0] === '=') { // formula
if (['down', 'up'].indexOf(direction) !== -1) {
delta = rlength * iterators.row;
} else if (['right', 'left'].indexOf(direction) !== -1) {
delta = clength * iterators.col;
}
return {
value: instance.plugin.utils.updateFormula(value, direction, delta),
iterators: iterators
}
} else { // other value
// increment or decrement values for more than 2 selected cells
if (rlength >= 2 || clength >= 2) {
var newValue = instance.plugin.helper.number(value),
ii,
start;
if (instance.plugin.utils.isNumber(newValue)) {
if (['down', 'up'].indexOf(direction) !== -1) {
delta = deltas[0][c];
if (direction === 'down') {
newValue += (delta * rlength * iterators.row);
} else {
ii = (selected.row - r) % rlength;
start = ii > 0 ? rlength - ii : 0;
newValue = instance.plugin.helper.number(data[start][c]);
newValue += (delta * rlength * iterators.row);
// last element in array -> decrement iterator
// iterator cannot be less than 1
if (iterators.row > 1 && (start + 1) === rlength) {
iterators.row--;
}
}
} else if (['right', 'left'].indexOf(direction) !== -1) {
delta = deltas[r][0];
if (direction === 'right') {
newValue += (delta * clength * iterators.col);
} else {
ii = (selected.col - c) % clength;
start = ii > 0 ? clength - ii : 0;
newValue = instance.plugin.helper.number(data[r][start]);
newValue += (delta * clength * (iterators.col || 1));
// last element in array -> decrement iterator
// iterator cannot be less than 1
if (iterators.col > 1 && (start + 1) === clength) {
iterators.col--;
}
}
}
return {
value: newValue,
iterators: iterators
}
}
}
}
return {
value: value,
iterators: iterators
};
};
var afterCreateRow = function(row, amount) {
var instance = this;
var selectedRow = instance.plugin.utils.isArray(instance.getSelected()) ? instance.getSelected()[0] : undefined;
if (instance.plugin.utils.isUndefined(selectedRow)) {
return;
}
var direction = (selectedRow >= row) ? 'before' : 'after',
items = instance.plugin.matrix.getRefItemsToRow(row),
counter = 1,
changes = [];
items.forEach(function(id) {
var item = instance.plugin.matrix.getItem(id),
formula = instance.plugin.utils.changeFormula(item.formula, 1, {
row: row
}), // update formula if needed
newId = id;
if (formula !== item.formula) { // formula updated
// change row index and get new coordinates
if ((direction === 'before' && selectedRow <= item.row) || (direction === 'after' && selectedRow < item.row)) {
newId = instance.plugin.utils.changeRowIndex(id, counter);
}
var cellCoords = instance.plugin.utils.cellCoords(newId);
if (newId !== id) {
// remove current item from matrix
instance.plugin.matrix.removeItem(id);
}
// set updated formula in new cell
changes.push([cellCoords.row, cellCoords.col, '=' + formula]);
}
});
if (items) {
instance.plugin.matrix.removeItemsBelowRow(row);
}
if (changes) {
instance.setDataAtCell(changes);
}
};
var afterCreateCol = function(col) {
var instance = this;
var selectedCol = instance.plugin.utils.isArray(instance.getSelected()) ? instance.getSelected()[1] : undefined;
if (instance.plugin.utils.isUndefined(selectedCol)) {
return;
}
var items = instance.plugin.matrix.getRefItemsToColumn(col),
counter = 1,
direction = (selectedCol >= col) ? 'before' : 'after',
changes = [];
items.forEach(function(id) {
var item = instance.plugin.matrix.getItem(id),
formula = instance.plugin.utils.changeFormula(item.formula, 1, {
col: col
}), // update formula if needed
newId = id;
if (formula !== item.formula) { // formula updated
// change col index and get new coordinates
if ((direction === 'before' && selectedCol <= item.col) || (direction === 'after' && selectedCol < item.col)) {
newId = instance.plugin.utils.changeColIndex(id, counter);
}
var cellCoords = instance.plugin.utils.cellCoords(newId);
if (newId !== id) {
// remove current item from matrix if id changed
instance.plugin.matrix.removeItem(id);
}
// set updated formula in new cell
changes.push([cellCoords.row, cellCoords.col, '=' + formula]);
}
});
if (items) {
instance.plugin.matrix.removeItemsBelowCol(col);
}
if (changes) {
instance.setDataAtCell(changes);
}
};
var formulaCell = {
renderer: formulaRenderer,
editor: Handsontable.editors.TextEditor,
dataType: 'formula'
};
var textCell = {
renderer: Handsontable.renderers.TextRenderer,
editor: Handsontable.editors.TextEditor
};
var numericCell = {
renderer: Handsontable.renderers.NumericRenderer,
editor: Handsontable.editors.NumericEditor
};
this.init = function() {
var instance = this;
instance.formulasEnabled = !! instance.getSettings().formulas;
if (instance.formulasEnabled) {
var custom = {
//
// [MODIFICATION] (sci 2588)
// Previously: "cellValue: instance.getDataAtCell"
//
cellValue: function(row, col){
var value = instance.getDataAtCell(row, col);
if (value && value[0] === '=') {
var formula = value.substr(1).toUpperCase();
var cellId = instance.plugin.utils.translateCellCoords({row: row, col: col});
var item = instance.plugin.matrix.getItem(cellId);
if (!item) {
item = instance.plugin.matrix.addItem({id: cellId, formula: formula});
} else {
item = instance.plugin.matrix.updateItem({id: cellId, formula: formula});
}
// parse formula
var newValue = instance.plugin.parse(formula, {row: row, col: col, id: cellId});
// cache result
formulasResults[cellId] = newValue;
// update item value and error
instance.plugin.matrix.updateItem(item, {formula: formula, value: newValue.result, error: newValue.error});
value = newValue.error || newValue.result;
}
return value;
}
// _!_MODIFICATION
};
instance.plugin = new ruleJS();
instance.plugin.init();
instance.plugin.custom = custom;
Handsontable.cellTypes.registerCellType('formula', {
editor: Handsontable.editors.TextEditor,
renderer: formulaRenderer
});
Handsontable.cellTypes.text.renderer = formulaRenderer;
Handsontable.cellTypes.numeric.renderer = formulaRenderer;
// [MODIFICATION] (sci 2588)
// This hook is new
instance.addHook('beforeRender', beforeRender);
// _!_MODIFICATION
instance.addHook('afterChange', afterChange);
instance.addHook('beforeAutofillInsidePopulate', beforeAutofillInsidePopulate);
instance.addHook('afterCreateRow', afterCreateRow);
instance.addHook('afterCreateCol', afterCreateCol);
} else {
// [MODIFICATION] (sci 2588)
// This hook is new
instance.removeHook('beforeRender', beforeRender);
// _!_MODIFICATION
instance.removeHook('afterChange', afterChange);
instance.removeHook('beforeAutofillInsidePopulate', beforeAutofillInsidePopulate);
instance.removeHook('afterCreateRow', afterCreateRow);
instance.removeHook('afterCreateCol', afterCreateCol);
}
};
}
var htFormula = new HandsontableFormula();
Handsontable.hooks.add('beforeInit', htFormula.init);
Handsontable.hooks.add('afterUpdateSettings', function() {
htFormula.init.call(this, 'afterUpdateSettings')
});
})(Handsontable);