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68 lines
2.1 KiB
68 lines
2.1 KiB
import { CursorPos } from "app/client/components/Cursor";
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import { DocModel, ViewFieldRec } from "app/client/models/DocModel";
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import BaseRowModel = require("app/client/models/BaseRowModel");
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/**
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* Absolute position of a cell in a document
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*/
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export abstract class CellPosition {
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public static equals(a: CellPosition, b: CellPosition) {
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return a && b && a.colRef == b.colRef &&
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a.sectionId == b.sectionId &&
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a.rowId == b.rowId;
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}
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public static create(row: BaseRowModel, field: ViewFieldRec): CellPosition {
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const rowId = row.id.peek();
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const colRef = field.colRef.peek();
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const sectionId = field.viewSection.peek().id.peek();
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return { rowId, colRef, sectionId };
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}
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public sectionId: number;
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public rowId: number | string;
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public colRef: number;
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}
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/**
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* Converts cursor position to cell absolute positions. Return null if the conversion is not
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* possible (if cursor position doesn't have enough information)
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* @param position Cursor position
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* @param docModel Document model
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*/
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export function fromCursor(position: CursorPos, docModel: DocModel): CellPosition | null {
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if (!position.sectionId || !position.rowId || position.fieldIndex == null) {
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return null;
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}
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const section = docModel.viewSections.getRowModel(position.sectionId);
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const colRef = section.viewFields().peek()[position.fieldIndex]?.colRef.peek();
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const cursorPosition = {
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rowId: position.rowId as (string | number), // TODO: cursor position is wrongly typed
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colRef,
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sectionId: position.sectionId,
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};
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return cursorPosition;
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}
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/**
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* Converts cell's absolute position to current cursor position.
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* @param position Cell's absolute position
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* @param docModel DocModel
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*/
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export function toCursor(position: CellPosition, docModel: DocModel): CursorPos {
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// translate colRef to fieldIndex
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const fieldIndex = docModel.viewSections.getRowModel(position.sectionId)
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.viewFields().peek()
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.findIndex(x => x.colRef.peek() == position.colRef);
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const cursorPosition = {
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rowId: position.rowId as number, // this is hack, as cursor position can accept string
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fieldIndex,
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sectionId: position.sectionId
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};
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return cursorPosition;
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}
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