package com.sencha.gxt.explorer.client.chart;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.editor.client.Editor.Path;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.Widget;
import com.sencha.gxt.chart.client.chart.Chart;
import com.sencha.gxt.chart.client.chart.Chart.Position;
import com.sencha.gxt.chart.client.chart.Legend;
import com.sencha.gxt.chart.client.chart.axis.CategoryAxis;
import com.sencha.gxt.chart.client.chart.axis.NumericAxis;
import com.sencha.gxt.chart.client.chart.series.BarSeries;
import com.sencha.gxt.chart.client.draw.RGB;
import com.sencha.gxt.chart.client.draw.sprite.TextSprite;
import com.sencha.gxt.core.client.ValueProvider;
import com.sencha.gxt.data.shared.ListStore;
import com.sencha.gxt.data.shared.ModelKeyProvider;
import com.sencha.gxt.data.shared.PropertyAccess;
import com.sencha.gxt.examples.resources.client.TestData;
import com.sencha.gxt.examples.resources.client.model.Data;
import com.sencha.gxt.explorer.client.model.Example.Detail;
import com.sencha.gxt.theme.base.client.panel.FramedPanelAppearance;
import com.sencha.gxt.widget.core.client.ContentPanel;
import com.sencha.gxt.widget.core.client.ContentPanel.ContentPanelAppearance;
import com.sencha.gxt.widget.core.client.button.TextButton;
import com.sencha.gxt.widget.core.client.button.ToggleButton;
import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer;
import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer.VerticalLayoutData;
import com.sencha.gxt.widget.core.client.event.SelectEvent;
import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
import com.sencha.gxt.widget.core.client.toolbar.ToolBar;

public class GroupedBarExample implements IsWidget, EntryPoint {

public interface DataPropertyAccess extends PropertyAccess<Data> {
    ValueProvider<Data, Double> data1();

ValueProvider<Data, Double> data2();

ValueProvider<Data, Double> data3();

ValueProvider<Data, String> name();

@Path("name")
    ModelKeyProvider<Data> nameKey();
  }

private static final DataPropertyAccess dataAccess = GWT.create(DataPropertyAccess.class);

@Override
  public Widget asWidget() {
    final ListStore<Data> store = new ListStore<Data>(dataAccess.nameKey());
    store.addAll(TestData.getData(12, 20, 100));

final Chart<Data> chart = new Chart<Data>();
    chart.setStore(store);
    chart.setChartShadow(true);

NumericAxis<Data> axis = new NumericAxis<Data>();
    axis.setPosition(Position.BOTTOM);
    axis.addField(dataAccess.data1());
    axis.addField(dataAccess.data2());
    axis.addField(dataAccess.data3());
    TextSprite title = new TextSprite("Number of Hits");
    title.setFontSize(18);
    axis.setTitleConfig(title);
    axis.setDisplayGrid(true);
    axis.setMinimum(0);
    axis.setMaximum(100);
    chart.addAxis(axis);

CategoryAxis<Data, String> catAxis = new CategoryAxis<Data, String>();
    catAxis.setPosition(Position.LEFT);
    catAxis.setField(dataAccess.name());
    title = new TextSprite("Month of the Year");
    title.setFontSize(18);
    catAxis.setTitleConfig(title);
    chart.addAxis(catAxis);

BarSeries<Data> bar = new BarSeries<Data>();
    bar.setYAxisPosition(Position.BOTTOM);
    bar.addYField(dataAccess.data1());
    bar.addYField(dataAccess.data2());
    bar.addYField(dataAccess.data3());
    bar.addColor(new RGB(148, 174, 10));
    bar.addColor(new RGB(17, 95, 166));
    bar.addColor(new RGB(166, 17, 32));
    chart.addSeries(bar);

Legend<Data> legend = new Legend<Data>();
    legend.setPosition(Position.RIGHT);
    legend.setItemHighlighting(true);
    chart.setLegend(legend);

TextButton regenerate = new TextButton("Reload Data");
    regenerate.addSelectHandler(new SelectHandler() {
      @Override
      public void onSelect(SelectEvent event) {
        store.clear();
        store.addAll(TestData.getData(12, 0, 100));
        chart.redrawChart();
      }
    });

ToggleButton animation = new ToggleButton("Animate");
    animation.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
      @Override
      public void onValueChange(ValueChangeEvent<Boolean> event) {
        chart.setAnimated(event.getValue());
      }
    });

ToolBar toolBar = new ToolBar();
    toolBar.add(regenerate);
    toolBar.add(animation);

ContentPanel panel = new ContentPanel(GWT.<ContentPanelAppearance> create(FramedPanelAppearance.class));
    panel.getElement().getStyle().setMargin(10, Unit.PX);

panel.setCollapsible(true);
    panel.setHeadingText("Grouped Bar Chart");
    panel.setPixelSize(620, 500);

panel.setBodyBorder(true);
    panel.setBodyStyleName("white-bg");

VerticalLayoutContainer layout = new VerticalLayoutContainer();
    layout.setBorders(true);

panel.add(layout);

toolBar.setLayoutData(new VerticalLayoutData(1, -1));
    layout.add(toolBar);

chart.setLayoutData(new VerticalLayoutData(1, 1));
    layout.add(chart);

return panel;
  }

public void onModuleLoad() {
    RootPanel.get().add(asWidget());
  }
}