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 * SciJava Common shared library for SciJava software.
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package org.scijava.widget;

import java.util.HashMap;
import java.util.Map;

/**
 * Abstract superclass of UI-specific {@link InputPanel} implementations.
 * 
 * @author Curtis Rueden
 * @param <P> The type of UI component housing the input panel itself.
 * @param <W> The type of UI component housing each input widget.
 */
public abstract class AbstractInputPanel<P, W> implements InputPanel<P, W> {

	/** Table of widgets. */
	protected Map<String, InputWidget<?, W>> widgets =
		new HashMap<>();

	// -- InputPanel methods --

	@Override
	public void addWidget(final InputWidget<?, W> widget) {
		widgets.put(widget.get().getItem().getName(), widget);
	}
	
	@Override
	public InputWidget<?, W> getWidget(final String name) {
		return widgets.get(name);
	}

	@Override
	public Object getValue(final String name) {
		return widgets.get(name).getValue();
	}

	@Override
	public int getWidgetCount() {
		return widgets.size();
	}

	@Override
	public boolean hasWidgets() {
		return widgets.size() > 0;
	}

	@Override
	public boolean isMessageOnly() {
		int messageCount = 0;
		for (final InputWidget<?, W> widget : widgets.values()) {
			if (widget.isMessage()) messageCount++;
		}
		return messageCount == getWidgetCount();
	}

	@Override
	public void refresh() {
		for (final InputWidget<?, W> w : widgets.values()) {
			w.refreshWidget();
		}
	}

}
