package com.googlecode.gflot.examples.client;



import java.util.ArrayList;

import java.util.List;



import com.google.gwt.core.client.GWT;

import com.google.gwt.event.dom.client.ChangeEvent;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.place.shared.Place;

import com.google.gwt.place.shared.PlaceChangeEvent;

import com.google.gwt.place.shared.PlaceChangeEvent.Handler;

import com.google.gwt.place.shared.PlaceController;

import com.google.gwt.uibinder.client.UiBinder;

import com.google.gwt.uibinder.client.UiField;

import com.google.gwt.uibinder.client.UiHandler;

import com.google.gwt.user.client.ui.AcceptsOneWidget;

import com.google.gwt.user.client.ui.Anchor;

import com.google.gwt.user.client.ui.Hyperlink;

import com.google.gwt.user.client.ui.ListBox;

import com.google.gwt.user.client.ui.ResizeComposite;

import com.google.gwt.user.client.ui.ScrollPanel;

import com.google.gwt.user.client.ui.Widget;

import com.google.web.bindery.event.shared.EventBus;

import com.googlecode.gflot.examples.client.examples.bar.BarPlace;

import com.googlecode.gflot.examples.client.examples.decimation.DecimationPlace;

import com.googlecode.gflot.examples.client.examples.export.ExportPlace;

import com.googlecode.gflot.examples.client.examples.hover.HoverPlace;

import com.googlecode.gflot.examples.client.examples.image.ImagePlace;

import com.googlecode.gflot.examples.client.examples.interactivelegend.InteractiveLegendPlace;

import com.googlecode.gflot.examples.client.examples.line.LinePlace;

import com.googlecode.gflot.examples.client.examples.markings.MarkingsPlace;

import com.googlecode.gflot.examples.client.examples.multipleaxes.MultipleAxesPlace;

import com.googlecode.gflot.examples.client.examples.navigate.NavigatePlace;

import com.googlecode.gflot.examples.client.examples.overview.OverviewPlace;

import com.googlecode.gflot.examples.client.examples.pie.PiePlace;

import com.googlecode.gflot.examples.client.examples.selection.SelectionPlace;

import com.googlecode.gflot.examples.client.examples.sliding.SlidingPlace;

import com.googlecode.gflot.examples.client.examples.stack.StackPlace;

import com.googlecode.gflot.examples.client.examples.threshold.ThresholdPlace;

import com.googlecode.gflot.examples.client.examples.tracking.TrackingPlace;

import com.googlecode.gflot.examples.client.resources.Resources;

import com.googlecode.gflot.examples.client.source.PlaceWithSources;



public class MainView

    extends ResizeComposite

    implements Handler

{



    private static MainViewUiBinder uiBinder = GWT.create( MainViewUiBinder.class );



    interface MainViewUiBinder

        extends UiBinder<Widget, MainView>

    {

    }



    private static interface Predicate

    {

        boolean apply( Place place );

    }



    private static class Link

    {

        private Hyperlink link;



        private Predicate predicate;



        public Link( Hyperlink link, Predicate predicate )

        {

            this.link = link;

            this.predicate = predicate;

        }



        public boolean isPlaceMatchLink( Place place )

        {

            return predicate.apply( place );

        }



        public Hyperlink getLink()

        {

            return link;

        }

    }



    private final PlaceController placeController;



    private List<Link> links;



    @UiField( provided = true )

    Resources res;



    @UiField

    Hyperlink barLink;



    @UiField

    Hyperlink decimationLink;



    @UiField

    Hyperlink hoverLink;



    @UiField

    Hyperlink imageLink;



    @UiField

    Hyperlink interactiveLegendLink;



    @UiField

    Hyperlink markingsLink;



    @UiField

    Hyperlink multipleAxesLink;



    @UiField

    Hyperlink overviewLink;



    @UiField

    Hyperlink pieLink;



    @UiField

    Hyperlink selectionLink;



    @UiField

    Hyperlink simpleLink;



    @UiField

    Hyperlink slidingLink;



    @UiField

    Hyperlink stackLink;



    @UiField

    Hyperlink exportLink;



    @UiField

    Hyperlink thresholdLink;



    @UiField

    Hyperlink navigateLink;



    @UiField

    Hyperlink trackingLink;



    @UiField

    Anchor exampleLink;



    @UiField

    Anchor sourceLink;



    @UiField

    ListBox sourceList;



    @UiField

    ScrollPanel container;



    public MainView( EventBus eventBus, PlaceController placeController, Resources res )

    {

        this.placeController = placeController;

        this.res = res;



        initWidget( uiBinder.createAndBindUi( this ) );



        links = new ArrayList<Link>();

        links.add( new Link( barLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof BarPlace;

            }

        } ) );

        links.add( new Link( decimationLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof DecimationPlace;

            }

        } ) );

        links.add( new Link( hoverLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof HoverPlace;

            }

        } ) );

        links.add( new Link( imageLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof ImagePlace;

            }

        } ) );

        links.add( new Link( interactiveLegendLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof InteractiveLegendPlace;

            }

        } ) );

        links.add( new Link( markingsLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof MarkingsPlace;

            }

        } ) );

        links.add( new Link( multipleAxesLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof MultipleAxesPlace;

            }

        } ) );

        links.add( new Link( overviewLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof OverviewPlace;

            }

        } ) );

        links.add( new Link( pieLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof PiePlace;

            }

        } ) );

        links.add( new Link( selectionLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof SelectionPlace;

            }

        } ) );

        links.add( new Link( simpleLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof LinePlace;

            }

        } ) );

        links.add( new Link( slidingLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof SlidingPlace;

            }

        } ) );

        links.add( new Link( stackLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof StackPlace;

            }

        } ) );

        links.add( new Link( exportLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof ExportPlace;

            }

        } ) );

        links.add( new Link( thresholdLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof ThresholdPlace;

            }

        } ) );

        links.add( new Link( navigateLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof NavigatePlace;

            }

        } ) );

        links.add( new Link( trackingLink, new Predicate() {

            @Override

            public boolean apply( Place place )

            {

                return place instanceof TrackingPlace;

            }

        } ) );



        eventBus.addHandler( PlaceChangeEvent.TYPE, this );

    }



    public AcceptsOneWidget getContainer()

    {

        return container;

    }



    @Override

    public void onPlaceChange( PlaceChangeEvent event )

    {

        Place newPlace = event.getNewPlace();



        // select the link corresponding to the place

        for ( Link link : links )

        {

            if ( link.isPlaceMatchLink( newPlace ) )

            {

                link.getLink().addStyleName( res.style().menuLinkSelected() );

            }

            else

            {

                link.getLink().removeStyleName( res.style().menuLinkSelected() );

            }

        }



        // clear the source list because we are going to update it with the raw source file corresponding to the new

        // place

        sourceList.clear();



        if ( newPlace instanceof PlaceWithSources )

        {

            exampleLink.setVisible( true );

            sourceLink.setVisible( true );



            PlaceWithSources<?> place = (PlaceWithSources<?>) newPlace;



            sourceList.addItem( "Example", place.getSourceFilename() );



            String[] rawFilenames = place.getRawSourceFilenames();



            if ( null != rawFilenames && rawFilenames.length > 0 )

            {

                // add the raw source files to the list and show the list

                String text = sourceLink.getText();

                if ( !text.endsWith( ":" ) )

                {

                    sourceLink.setText( text + ":" );

                }

                sourceList.setVisible( true );

                int indexRawSource = 0;

                // starting at 1 because the first item is the example

                int i = 1;

                for ( String filename : rawFilenames )

                {

                    sourceList.addItem( filename, filename );

                    if ( place.isRawSource() && filename.equals( place.getFilename() ) )

                    {

                        indexRawSource = i;

                    }

                    i++;

                }

                sourceList.setSelectedIndex( indexRawSource );

            }

            else

            {

                // no raw source file, we hide the list

                String text = sourceLink.getText();

                if ( text.endsWith( ":" ) )

                {

                    sourceLink.setText( text.substring( 0, text.length() - 1 ) );

                }

                sourceList.setVisible( false );

            }



            if ( null == place.getFilename() )

            {

                sourceLink.removeStyleName( res.style().sourceLinkSelected() );

                exampleLink.addStyleName( res.style().sourceLinkSelected() );

                container.getElement().getStyle().clearBackgroundColor();

                container.getElement().getStyle().clearProperty( "border" );

            }

            else

            {

                exampleLink.removeStyleName( res.style().sourceLinkSelected() );

                sourceLink.addStyleName( res.style().sourceLinkSelected() );

                container.getElement().getStyle().setBackgroundColor( "#eee" );

                container.getElement().getStyle().setProperty( "border", "1px solid #c3c3c3" );

            }

        }

        else

        {

            // should not happen

            exampleLink.setVisible( false );

            sourceLink.setVisible( false );

            sourceList.setVisible( false );

        }

    }



    @UiHandler( "exampleLink" )

    void onClickExampleLink( ClickEvent e )

    {

        Place currentPlace = placeController.getWhere();

        if ( currentPlace instanceof PlaceWithSources )

        {

            PlaceWithSources<?> place = (PlaceWithSources<?>) currentPlace;

            if ( null != place.getFilename() )

            {

                // we were on the source page, we create a new place from the previous one and go to this new place

                placeController.goTo( place.createPlace() );

            }

        }

    }



    @UiHandler( "sourceLink" )

    void onClickSourceLink( ClickEvent e )

    {

        Place currentPlace = placeController.getWhere();

        if ( currentPlace instanceof PlaceWithSources )

        {

            PlaceWithSources<?> place = (PlaceWithSources<?>) currentPlace;

            // we were on the example page, we create a new place from the previous one and go to this new place

            placeController.goTo( place.createPlace( place.getSourceFilename(),

                sourceList.isVisible() && sourceList.getSelectedIndex() > 0 ) );

        }

    }



    @UiHandler( "sourceList" )

    void onChangeSourceList( ChangeEvent e )

    {

        Place currentPlace = placeController.getWhere();

        if ( currentPlace instanceof PlaceWithSources )

        {

            PlaceWithSources<?> place = (PlaceWithSources<?>) currentPlace;

            int selectedIndex = sourceList.getSelectedIndex();

            // we were on the example page, we create a new place from the previous one and go to this new place

            placeController.goTo( place.createPlace( sourceList.getValue( selectedIndex ), selectedIndex > 0 ) );

        }

    }

}