ToggleGreetingAction.java

package dev.simplified.tabsimile.header;

import com.intellij.ide.ActivityTracker;
import com.intellij.openapi.actionSystem.ActionUpdateThread;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.ToggleAction;
import com.intellij.openapi.project.DumbAware;
import org.jetbrains.annotations.NotNull;

/**
 * The single checkable entry inside the right-hand header menu.
 *
 * <p>
 * A {@link ToggleAction} renders with a checkmark in a popup menu and needs only the
 * two accessors below - the action system paints the state rather than the action
 * doing it.
 */
public final class ToggleGreetingAction extends ToggleAction implements DumbAware {

    /** Constructs the greeting toggle. */
    public ToggleGreetingAction() {
        super("Show Greeting");
    }

    @Override
    public boolean isSelected(@NotNull AnActionEvent event) {
        return GreetingState.getInstance().isVisible();
    }

    @Override
    public void setSelected(@NotNull AnActionEvent event, boolean state) {
        GreetingState.getInstance().setVisible(state);

        // Toolbars re-run update() on their own schedule, so without a nudge the
        // greeting label would appear or vanish only on the next unrelated UI event.
        // Bumping the activity count is the supported way to say "action state
        // changed underneath you".
        ActivityTracker.getInstance().inc();
    }

    @Override
    public @NotNull ActionUpdateThread getActionUpdateThread() {
        return ActionUpdateThread.BGT;
    }
}