onEdit(e) trigger won't call function automatically in google sheets - google-apps-script

Question

I am trying to calculate some values using my own function (showing dummy function in this question), and I'd like the function to trigger when the user edits a cell in a given range, however even after writing the trigger the only time when the value is calculated again is when I go to the script editor and click Save.
My function:
function calculate(column) {
var sheet = SpreadsheetApp.getActiveSheet();
var column = sheet.getActiveCell().getColumn();
var values2d = sheet.getRange(1, 1, 15).getValues();
var values = [].concat.apply([], values2d);
var testRange2d = sheet.getRange(1, column, 15).getValues();
var testRange = [].concat.apply([], testRange2d);
var sum = 0;
for (var i = 0; i < 15; i++) {
if (testRange[i] == true) sum += values[i]
}
return sum;
}
function onEdit(e) {
var activeCell = SpreadsheetApp.getActiveSheet().getActiveCell();
if (activeCell.getBackground() === "#e3f5a2") activeCell.setBackground("#ffffff");
else activeCell.setBackground("#e3f5a2");
calculate();
}
And the sheet:
The cell besides total is where I call my function. And the value will only be updated either manually or as described earlier, but even when I trigger an event, I have also tried doing other actions in the trigger like changing a random cells value and that worked however.

Answer 1

Might i suggest the following. This will only occur if a checkbox in column 2 is changed.
function onEdit(event) {
try {
var sheet = event.source.getSheetByName("Sheet1")
if( event.range.getSheet().getName() === "Sheet1" ) {
if( event.range.getColumn() === 2 ) {
var values = sheet.getRange(1,1,15,2).getValues();
var sum = 0;
for( var i=0; i<values.length; i++ ) {
if( values[i][1] ) sum += values[i][0];
}
sheet.getRange(16,2,1,1).setValue(sum);
if( event.range.getBackground() === "#e3f5a2" )
event.range.setBackground("#ffffff");
else
event.range.setBackground("#e3f5a2");
}
}
}
catch(err) {
SpreadsheetApp.getUi().alert(err);
}
}