package ca.nanometrics.gflot.sample.client;



import java.util.ArrayList;

import java.util.List;



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

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

import com.google.gwt.core.client.Scheduler.ScheduledCommand;

import com.google.gwt.dom.client.Style.Unit;

import com.google.gwt.event.logical.shared.SelectionEvent;

import com.google.gwt.event.logical.shared.SelectionHandler;

import com.google.gwt.user.client.DOM;

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

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

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

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



public class GFlotSample

    implements EntryPoint

{

    private TabLayoutPanel tabPanel;



    private List<SimpleLayoutPanel> panels;



    private List<GFlotExample> samples;



    private void addExamples()

    {

        panels = new ArrayList<SimpleLayoutPanel>();

        samples = new ArrayList<GFlotExample>();



        addExample( new SimplePlotExample() );

        addExample( new BarChartExample() );

        addExample( new PlotWithInteractiveLegendExample() );

        addExample( new PlotWithOverviewExample() );

        addExample( new HoverExample() );

        addExample( new SlidingWindowExample() );

        addExample( new DecimationExample() );

        addExample( new MarkingsExample() );

        addExample( new ImageExample() );

    }



    private void addExample( GFlotExample example )

    {

        SimpleLayoutPanel panel = new SimpleLayoutPanel();

        tabPanel.add( panel, example.getName() );

        panels.add( panel );

        samples.add( example );

    }



    public void onModuleLoad()

    {

        tabPanel = new TabLayoutPanel( 30, Unit.PX );



        addExamples();



        tabPanel.addSelectionHandler( new SelectionHandler<Integer>()

        {

            @Override

            public void onSelection( SelectionEvent<Integer> event )

            {

                initSample( event.getSelectedItem() );

            }

        } );



        RootLayoutPanel.get().add( tabPanel );



        // selected by default

        initSample( 0 );

    }



    private void initSample( final int index )

    {

        // deferred to prevent a bug where the axis are not correctly drawn

        Scheduler.get().scheduleDeferred( new ScheduledCommand()

        {

            @Override

            public void execute()

            {

                SimpleLayoutPanel panel = panels.get( index );

                if ( null == panel.getWidget() )

                {

                    Widget sample = samples.get( index ).createExample();

                    DOM.setStyleAttribute( sample.getElement(), "marginTop", "10px" );

                    panel.setWidget( sample );



                    // setting size to 100% to avoid a bug on IE6 and IE7 where the panel don't take all the space

                    // available

                    panel.setSize( "100%", "100%" );

                }

            }

        } );

    }



}