diff options
Diffstat (limited to 'shell/ev-view.c')
| -rw-r--r-- | shell/ev-view.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/shell/ev-view.c b/shell/ev-view.c index 41bf94b..8e18ec4 100644 --- a/shell/ev-view.c +++ b/shell/ev-view.c @@ -1123,6 +1123,23 @@ go_to_index (EvView *view, int index) go_to_link (view, link); } +gboolean +ev_view_can_go_back (EvView *view) +{ + int index, n; + + g_return_val_if_fail (EV_IS_HISTORY (view->history), FALSE); + + index = ev_history_get_current_index (view->history); + n = ev_history_get_n_links (view->history); + + if (n > 0) { + return index != MAX (0, index - 1); + } else { + return FALSE; + } +} + void ev_view_go_back (EvView *view) { @@ -1139,6 +1156,23 @@ ev_view_go_back (EvView *view) } } +gboolean +ev_view_can_go_forward (EvView *view) +{ + int index, n; + + g_return_val_if_fail (EV_IS_HISTORY (view->history), FALSE); + + index = ev_history_get_current_index (view->history); + n = ev_history_get_n_links (view->history); + + if (n > 0) { + return index != MIN (n - 1, index + 1); + } else { + return FALSE; + } +} + void ev_view_go_forward (EvView *view) { |