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package cointop
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func (ct *Cointop) currentPage() int {
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return ct.State.page + 1
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}
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func (ct *Cointop) currentDisplayPage() int {
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return ct.State.page + 1
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}
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func (ct *Cointop) totalPages() int {
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return ct.getListCount() / ct.State.perPage
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}
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func (ct *Cointop) totalPagesDisplay() int {
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return ct.totalPages() + 1
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}
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func (ct *Cointop) totalPerPage() int {
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return ct.State.perPage
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}
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func (ct *Cointop) setPage(page int) int {
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if (page*ct.State.perPage) < ct.getListCount() && page >= 0 {
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ct.State.page = page
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}
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return ct.State.page
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}
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func (ct *Cointop) cursorDown() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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_, y := ct.Views.Table.Backing().Origin()
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cx, cy := ct.Views.Table.Backing().Cursor()
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numRows := len(ct.State.coins) - 1
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if (cy + y + 1) > numRows {
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return nil
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}
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if err := ct.Views.Table.Backing().SetCursor(cx, cy+1); err != nil {
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ox, oy := ct.Views.Table.Backing().Origin()
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// set origin scrolls
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if err := ct.Views.Table.Backing().SetOrigin(ox, oy+1); err != nil {
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return err
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}
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) cursorUp() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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ox, oy := ct.Views.Table.Backing().Origin()
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cx, cy := ct.Views.Table.Backing().Cursor()
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if err := ct.Views.Table.Backing().SetCursor(cx, cy-1); err != nil && oy > 0 {
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// set origin scrolls
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if err := ct.Views.Table.Backing().SetOrigin(ox, oy-1); err != nil {
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return err
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}
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) pageDown() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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ox, oy := ct.Views.Table.Backing().Origin() // this is prev origin position
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cx, _ := ct.Views.Table.Backing().Cursor() // relative cursor position
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_, sy := ct.Views.Table.Backing().Size() // rows in visible view
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k := oy + sy
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l := len(ct.State.coins)
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// end of table
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if (oy + sy + sy) > l {
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k = l - sy
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}
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// select last row if next jump is out of bounds
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if k < 0 {
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k = 0
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sy = l
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}
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if err := ct.Views.Table.Backing().SetOrigin(ox, k); err != nil {
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return err
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}
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// move cursor to last line if can't scroll further
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if k == oy {
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if err := ct.Views.Table.Backing().SetCursor(cx, sy-1); err != nil {
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return err
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}
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) pageUp() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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ox, oy := ct.Views.Table.Backing().Origin()
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cx, _ := ct.Views.Table.Backing().Cursor() // relative cursor position
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_, sy := ct.Views.Table.Backing().Size() // rows in visible view
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k := oy - sy
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if k < 0 {
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k = 0
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}
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if err := ct.Views.Table.Backing().SetOrigin(ox, k); err != nil {
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return err
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}
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// move cursor to first line if can't scroll further
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if k == oy {
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if err := ct.Views.Table.Backing().SetCursor(cx, 0); err != nil {
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return err
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}
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) navigateFirstLine() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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ox, _ := ct.Views.Table.Backing().Origin()
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cx, _ := ct.Views.Table.Backing().Cursor()
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if err := ct.Views.Table.Backing().SetOrigin(ox, 0); err != nil {
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return err
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}
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if err := ct.Views.Table.Backing().SetCursor(cx, 0); err != nil {
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return err
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) navigateLastLine() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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ox, _ := ct.Views.Table.Backing().Origin()
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cx, _ := ct.Views.Table.Backing().Cursor()
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_, sy := ct.Views.Table.Backing().Size()
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l := len(ct.State.coins)
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k := l - sy
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if err := ct.Views.Table.Backing().SetOrigin(ox, k); err != nil {
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return err
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}
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if err := ct.Views.Table.Backing().SetCursor(cx, sy-1); err != nil {
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return err
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) navigatePageFirstLine() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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cx, _ := ct.Views.Table.Backing().Cursor()
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if err := ct.Views.Table.Backing().SetCursor(cx, 0); err != nil {
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return err
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) navigatePageMiddleLine() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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cx, _ := ct.Views.Table.Backing().Cursor()
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_, sy := ct.Views.Table.Backing().Size()
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if err := ct.Views.Table.Backing().SetCursor(cx, (sy/2)-1); err != nil {
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return err
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) navigatePageLastLine() error {
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if ct.Views.Table.Backing() == nil {
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return nil
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}
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cx, _ := ct.Views.Table.Backing().Cursor()
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_, sy := ct.Views.Table.Backing().Size()
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if err := ct.Views.Table.Backing().SetCursor(cx, sy-1); err != nil {
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return err
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}
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) prevPage() error {
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if ct.isFirstPage() {
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return nil
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}
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ct.setPage(ct.State.page - 1)
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ct.updateTable()
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) nextPage() error {
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ct.setPage(ct.State.page + 1)
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ct.updateTable()
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) firstPage() error {
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ct.State.page = 0
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ct.updateTable()
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) isFirstPage() bool {
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return ct.State.page == 0
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}
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func (ct *Cointop) lastPage() error {
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ct.State.page = ct.getListCount() / ct.State.perPage
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ct.updateTable()
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ct.rowChanged()
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return nil
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}
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func (ct *Cointop) goToGlobalIndex(idx int) error {
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perpage := ct.totalPerPage()
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atpage := idx / perpage
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ct.setPage(atpage)
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rowIndex := (idx % perpage)
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ct.highlightRow(rowIndex)
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ct.updateTable()
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return nil
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}
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func (ct *Cointop) highlightRow(idx int) error {
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ct.Views.Table.Backing().SetOrigin(0, 0)
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ct.Views.Table.Backing().SetCursor(0, 0)
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ox, _ := ct.Views.Table.Backing().Origin()
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cx, _ := ct.Views.Table.Backing().Cursor()
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_, sy := ct.Views.Table.Backing().Size()
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perpage := ct.totalPerPage()
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p := idx % perpage
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oy := (p / sy) * sy
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cy := p % sy
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if oy > 0 {
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ct.Views.Table.Backing().SetOrigin(ox, oy)
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}
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ct.Views.Table.Backing().SetCursor(cx, cy)
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return nil
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}
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