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Spreadsheet: Implement infinit-scroll for columns

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This naturally also implements multi-char columns, and also integrates
it into the js runtime (such columns can be named in ranges too).
This commit is contained in:
AnotherTest 2020-11-27 13:55:14 +03:30 • committed by Andreas Kling
parent f6ae4edbd2
commit 474453244b
7 changed files with 233 additions and 50 deletions
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34
Base/res/js/Spreadsheet/runtime.js
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@ -27,20 +27,20 @@ class Position {
left(how_many) {
how_many = how_many ?? 1;
const column = Math.min(
"Z".charCodeAt(0),
Math.max("A".charCodeAt(0), this.column.charCodeAt(0) - how_many)
return new Position(
this.sheet.column_arithmetic(this.column, -how_many),
this.row,
this.sheet
);
return new Position(String.fromCharCode(column), this.row, this.sheet);
}
right(how_many) {
how_many = how_many ?? 1;
const column = Math.min(
"Z".charCodeAt(0),
Math.max("A".charCodeAt(0), this.column.charCodeAt(0) + how_many)
return new Position(
this.sheet.column_arithmetic(this.column, how_many),
this.row,
this.sheet
);
return new Position(String.fromCharCode(column), this.row, this.sheet);
}
with_column(value) {
@ -78,22 +78,21 @@ function range(start, end, columnStep, rowStep) {
end = parse_cell_name(end) ?? start;
}
if (end.column.length > 1 || start.column.length > 1)
throw new TypeError("Only single-letter column names are allowed (TODO)");
const cells = [];
for (
let col = Math.min(start.column.charCodeAt(0), end.column.charCodeAt(0));
col <= Math.max(start.column.charCodeAt(0), end.column.charCodeAt(0));
col += columnStep
) {
const start_column_index = column_index(start.column);
const end_column_index = column_index(end.column);
const start_column = start_column_index > end_column_index ? end.column : start.column;
const distance = Math.abs(start_column_index - end_column_index);
for (let col = 0; col <= distance; col += columnStep) {
const column = column_arithmetic(start_column, col);
for (
let row = Math.min(start.row, end.row);
row <= Math.max(start.row, end.row);
row += rowStep
) {
cells.push(String.fromCharCode(col) + row);
cells.push(column + row);
}
}
@ -345,6 +344,7 @@ range.__documentation = JSON.stringify({
examples: {
'range("A1", "C4")': "Generate a range A1:C4",
'range("A1", "C4", 2)': "Generate a range A1:C4, skipping every other column",
'range("AA1", "AC4", 2)': "Generate a range AA1:AC4, skipping every other column",
},
});