diff options
| author | Dave Malcolm <dmalcolm@redhat.com> | 2005-01-14 05:26:54 (GMT) |
|---|---|---|
| committer | David Malcolm <dave_malcolm@src.gnome.org> | 2005-01-14 05:26:54 (GMT) |
| commit | 3e3ca2bb5e6206bdb5af6b097cd9b92252e7a6c2 (patch) | |
| tree | cea73ecdc00fe2fe7603bc7bd01e2677cc0bea1d /shell/ev-view.c | |
| parent | e7088d0b30431821a31a2a7c64b1d8e921362f0d (diff) | |
new functions to help with implementation of sensitivity code Fix
2005-01-14 Dave Malcolm <dmalcolm@redhat.com>
* shell/ev-view.h:
* shell/ev-view.c (ev_view_can_go_back), (ev_view_can_go_forward):
new functions to help with implementation of sensitivity code
* shell/ev-window.c (update_action_sensitivity): Fix sensitivity
of all actions that might require it. Fixes a crash when you
click on the Zoom actions in a window lacking a document.
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) { |