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