@launchmenu/core
Version:
An environment for visual keyboard controlled applets
48 lines • 4.17 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.MoveCursorVerticalCommand = void 0;
const rangeConversion_1 = require("../../utils/rangeConversion");
const retrieveArgument_1 = require("./retrieveArgument");
const TextEditCommand_1 = require("./TextEditCommand");
/** A command to move the cursor vertically */
class MoveCursorVerticalCommand extends TextEditCommand_1.TextEditCommand {
/**
* Creates a new command to move the cursor vertically (up or down, positive is down)
* @param textField The text field ot move the cursor for
* @param direction The movement direction
* @param expandSelection Whether to alter the current text selection
*/
constructor(textField, direction = 1, expandSelection) {
super(textField, ({ selection, text }) => {
direction = retrieveArgument_1.retrieveArgument(direction);
expandSelection = retrieveArgument_1.retrieveArgument(expandSelection);
// Get a point representation of the index
let startPoint = rangeConversion_1.get2dIndex(text, selection.start);
let endPoint = rangeConversion_1.get2dIndex(text, selection.end);
// If we want to expand the selection, only change the end
if (expandSelection)
endPoint.row += direction;
// Otherwise move both to the end index
else {
let point;
if (selection.start != selection.end) {
if (direction > 0 == selection.end > selection.start)
point = endPoint;
else
point = startPoint;
}
else
point = endPoint;
point.row += direction;
startPoint = endPoint = point;
}
// Convert back to 1d index representation
const startIndex = rangeConversion_1.get1dIndex(text, startPoint);
const endIndex = rangeConversion_1.get1dIndex(text, endPoint);
// Return the nee changes and new selection
return { selection: { start: startIndex, end: endIndex } };
}, { isSelectionChange: true });
}
}
exports.MoveCursorVerticalCommand = MoveCursorVerticalCommand;
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