getPageNumbers method

List getPageNumbers({ required int paginationPage, required int numberOfPages, bool testMode = false, int? skip, int? limit, required dynamic onTap(int), })

Implementation

List getPageNumbers({
  required int paginationPage,
  required int numberOfPages,
  bool testMode = false,
  int? skip,
  int? limit,
  required Function(int) onTap,
}) {
  if (testMode == false) {
    assert(skip != null);
    assert(limit != null);
  }
  List<Widget> row = [];
  List<String> rowNames = []; // For testing

  void addRow({required ButtonTypes type, required int pageNumber, required int i}) {
    Widget rowToAdd;
    String rowToAddTest;
    switch (type) {
      case ButtonTypes.left:
        rowToAddTest = type.name;
        rowToAdd = PaginationConstants.leftButton(pageNumber: pageNumber, skip: skip, limit: limit, onTap: onTap);
        break;
      case ButtonTypes.ellipsis:
        rowToAddTest = type.name;
        rowToAdd = PaginationConstants.ellipsisButton(pageNumber: pageNumber, numberOfPages: numberOfPages, skip: skip, limit: limit, onTap: onTap);
        break;
      case ButtonTypes.right:
        rowToAddTest = type.name;
        rowToAdd = PaginationConstants.rightButton(pageNumber: pageNumber, skip: skip, limit: limit, onTap: onTap);
        break;

      case ButtonTypes.number:
        rowToAddTest = '${pageNumber + 1}';
        rowToAdd = PaginationConstants.numberButton(pageNumber: pageNumber, numberOfPages: numberOfPages, i: i, skip: skip, limit: limit, onTap: onTap);
        break;
    }
    rowNames.add(rowToAddTest);
    row.add(rowToAdd);
  }

  for (int i = 0; i < PaginationConstants.totalButtons; i++) {
    switch (i) {
      case 0:
        // int pageNumber = i;
        // if (paginationPage > 0) {
        //   pageNumber = paginationPage - 1;
        // }
        addRow(type: paginationPage > 0 ? ButtonTypes.left : ButtonTypes.number, pageNumber: paginationPage, i: i);
        break;
      case 1:
        int pageNumber = i;
        if (paginationPage > 1) {
          pageNumber = 0;
        } else if (paginationPage > 0 && i != 5) {
          pageNumber = i - 1;
        }
        addRow(type: ButtonTypes.number, pageNumber: pageNumber, i: i);
        break;
      case 2:
        int pageNumber = i;
        if (paginationPage > 2) {
          pageNumber = paginationPage - 1;
          if (paginationPage == (numberOfPages - 1)) {
            pageNumber = numberOfPages - 5;
          } else if (paginationPage > (numberOfPages - 4)) {
            pageNumber = numberOfPages - 4;
          }
        } else if (paginationPage > 0 && i != 5) {
          pageNumber = i - 1;
        }
        addRow(type: paginationPage > 2 ? ButtonTypes.ellipsis : ButtonTypes.number, pageNumber: pageNumber, i: i);
        break;
      case 3:
        int pageNumber = paginationPage;
        if (paginationPage == 0) {
          pageNumber = i;
        } else if (paginationPage == 1 || paginationPage == 2) {
          pageNumber = 2;
        } else if (paginationPage == (numberOfPages - 1)) {
          pageNumber = numberOfPages - 4;
        } else if (paginationPage == (numberOfPages - 2)) {
          pageNumber = numberOfPages - 3;
        }
        addRow(type: ButtonTypes.number, pageNumber: pageNumber, i: i);
        break;
      case 4:
        int pageNumber = paginationPage;
        if (paginationPage < (numberOfPages - 3)) {
          pageNumber = paginationPage + 1;
          if (paginationPage == 0) {
            pageNumber = i;
          } else if (paginationPage < 3) {
            pageNumber = 3;
          }
        } else if (paginationPage == (numberOfPages - 1)) {
          pageNumber = paginationPage - 2;
        } else if (paginationPage == (numberOfPages - 2)) {
          pageNumber = paginationPage;
        } else if (paginationPage == (numberOfPages - 3)) {
          pageNumber = paginationPage + 1;
        }
        addRow(type: paginationPage < (numberOfPages - 3) ? ButtonTypes.ellipsis : ButtonTypes.number, pageNumber: pageNumber, i: i);
        break;
      case 5:
        int pageNumber = paginationPage + 2;
        if (paginationPage == (numberOfPages - 1)) {
          pageNumber = paginationPage - 1;
        } else if (paginationPage == (numberOfPages - 2)) {
          pageNumber = paginationPage + 1;
        } else if (i == 5) {
          pageNumber = numberOfPages - 1;
        }
        addRow(type: ButtonTypes.number, pageNumber: pageNumber, i: i);
        break;
      case 6:
        // int pageNumber = paginationPage;
        // if (paginationPage > (numberOfPages - 4)) {
        //   pageNumber = paginationPage;
        // } else if (paginationPage > 0) {
        //   pageNumber = paginationPage + 1;
        // }
        addRow(type: paginationPage < (numberOfPages - 1) ? ButtonTypes.right : ButtonTypes.number, pageNumber: paginationPage, i: i);
        break;
    }
  }
  return testMode ? rowNames : row;
}