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37 lines
1.2 KiB
37 lines
1.2 KiB
package app.navigation.components.button;
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import app.data.entity.Matchday;
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import app.navigation.Navigation;
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import com.vaadin.flow.component.button.Button;
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import com.vaadin.flow.component.icon.Icon;
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import com.vaadin.flow.component.icon.VaadinIcon;
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import java.util.Optional;
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public class PrevMatchdayButton extends Button {
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private final Navigation navigation;
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public PrevMatchdayButton(Navigation navigation) {
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this.navigation = navigation;
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if (!navigation.matchdayEnabled())
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throw new IllegalStateException("Cannot instantiate PrevMatchdayButton when Matchdays are not enabled!");
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setIcon(new Icon(VaadinIcon.ARROW_LEFT));
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navigation.addRunnableToBeRunAfterSelection(this::configure);
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}
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private void configure() {
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Optional<Matchday> prevMatchday = getPrevMatchday();
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setEnabled(prevMatchday.isPresent());
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addClickListener(event -> prevMatchday.ifPresent(matchday -> navigation.getMatchdaySelect().setValue(matchday)));
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}
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private Optional<Matchday> getPrevMatchday() {
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int index = ButtonUtils.getMatchdayIndex(navigation);
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if (index > 0) return Optional.ofNullable(navigation.getMatchdayList().get(index - 1));
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return Optional.empty();
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}
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}
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