Method onCursorCancel

tools/xsbug/behaviors.js:199–203

(code, sign)

		return (sign < 0) ? code.selectionOffset : code.selectionOffset + code.selectionLength;
	}
	onCursorCancel(code, sign) {
		this.cursorAnchor = null;
		this.cursorLocation = null;
		this.cursorOffset = null;
	}
	onCursorX(code, sign) {
		var offset = this.onCursorBefore(code, sign);
		this.cursorLocation = null;