package org.csstudio.sds.ui.internal.editor.newproperties;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.csstudio.sds.internal.model.TooltipProperty;
import org.csstudio.sds.model.AbstractWidgetModel;
import org.csstudio.sds.model.WidgetProperty;
import org.eclipse.jface.fieldassist.ContentProposalAdapter;
import org.eclipse.jface.fieldassist.IContentProposal;
import org.eclipse.swt.SWT;

/**
 * Section implementation for {@link TooltipProperty}.
 * 
 * @author Sven Wende
 * 
 */
public class TooltipSection extends AbstractTextSection<TooltipProperty, String> {

	public TooltipSection(String propertyId) {
		super(propertyId);
	}

	/**
	 *{@inheritDoc}
	 */
	@Override
	public int getTextHeight() {
		return STANDARD_WIDGET_HEIGHT * 6;
	}
	
	@Override
	protected int getTextControlStyle() {
		return SWT.MULTI | SWT.V_SCROLL;
	}
	
	/**
	 *{@inheritDoc}
	 */
	@Override
	protected String getConvertedValue(String text) {
		return text;
	}
	
	/**
	 * {@inheritDoc}
	 */
	@Override
	protected int getProposalAcceptanceStyle() {
		return ContentProposalAdapter.PROPOSAL_INSERT;
	}

	/**
	 *{@inheritDoc}
	 */
	@Override
	protected void doRefreshControls(TooltipProperty widgetProperty) {
		if (widgetProperty != null && !widgetProperty.getPropertyValue().toString().equals(getTextControl().getText())) {
			getTextControl().setText(widgetProperty.getPropertyValue().toString());
		}
	}

	/**
	 *{@inheritDoc}
	 */
	@Override
	protected List<IContentProposal> getContentProposals(TooltipProperty property, AbstractWidgetModel selectedWidget,
			List<AbstractWidgetModel> selectedWidgets) {
		List<IContentProposal> proposals = new ArrayList<IContentProposal>();

		// .. collect property proposals
		if (selectedWidgets != null && selectedWidgets.size() > 0) {
			Set<String> props = new HashSet<String>();

			// .. we only display proposals for properties that are currently visible on all selected widgets
			props.addAll(selectedWidgets.get(0).getVisiblePropertyIds());

			for (AbstractWidgetModel widget : selectedWidgets) {
				props.retainAll(widget.getVisiblePropertyIds());
			}

			for (String propertyId : props) {
				proposals.add(new WidgetPropertContentProposal(selectedWidgets.get(0).getPropertyInternal(propertyId)));
			}

		}

		return proposals;
	}

	/**
	 * Describes a proposal.
	 * 
	 * @author Sven Wende
	 */
	private static final class WidgetPropertContentProposal implements IContentProposal {
		private WidgetProperty property;

		private WidgetPropertContentProposal(WidgetProperty property) {
			assert property != null;
			this.property = property;
		}

		@Override
		public String getContent() {
			return "${" + property.getId() + "}";
		}

		@Override
		public int getCursorPosition() {
			return 0;
		}

		@Override
		public String getDescription() {
			return property.getDescription();
		}

		@Override
		public String getLabel() {
			return property.getDescription();
		}

	}

}