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Avoid unwrap calls in handle_navigate_msg.
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commit
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1 changed files with 18 additions and 10 deletions
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@ -798,20 +798,28 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
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let next = match direction {
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NavigationDirection::Forward => {
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if frame.next.is_empty() {
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debug!("no next page to navigate to");
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return;
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match frame.next.pop() {
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None => {
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debug!("no next page to navigate to");
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return;
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},
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Some(next) => {
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frame.prev.push(frame.current);
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next
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},
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}
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frame.prev.push(frame.current);
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frame.next.pop().unwrap()
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}
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NavigationDirection::Back => {
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if frame.prev.is_empty() {
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debug!("no previous page to navigate to");
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return;
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match frame.prev.pop() {
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None => {
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debug!("no previous page to navigate to");
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return;
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},
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Some(prev) => {
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frame.next.push(frame.current);
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prev
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},
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}
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frame.next.push(frame.current);
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frame.prev.pop().unwrap()
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}
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};
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let prev = frame.current;
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