public Widget asWidget() {
final Chart<Site> chart = new Chart<Site>(600, 400);
chart.setDefaultInsets(20);
final ListStore<Site> store = new ListStore<Site>(siteAccess.nameKey());
Date initial = f.parse("Feb 1");
for (int i = 0; i < 7; i++) {
store.add(
new Site(initial, Math.random() * 20 + 80, Math.random() * 20 + 40, Math.random() * 20));
initial = CalendarUtil.copyDate(initial);
CalendarUtil.addDaysToDate(initial, 1);
}
chart.setStore(store);
NumericAxis<Site> axis = new NumericAxis<Site>();
axis.setPosition(Position.LEFT);
axis.addField(siteAccess.visits());
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);
final TimeAxis<Site> time = new TimeAxis<Site>();
time.setField(siteAccess.date());
time.setStartDate(f.parse("Feb 1"));
time.setEndDate(f.parse("Feb 7"));
time.setLabelProvider(
new LabelProvider<Date>() {
@Override
public String getLabel(Date item) {
return f.format(item);
}
});
chart.addAxis(time);
LineSeries<Site> series = new LineSeries<Site>();
series.setYAxisPosition(Position.LEFT);
series.setYField(siteAccess.visits());
series.setStroke(new RGB(148, 174, 10));
series.setShowMarkers(true);
series.setMarkerIndex(1);
Sprite marker = Primitives.circle(0, 0, 6);
marker.setFill(new RGB(148, 174, 10));
series.setMarkerConfig(marker);
chart.addSeries(series);
series = new LineSeries<Site>();
series.setYAxisPosition(Position.LEFT);
series.setYField(siteAccess.views());
series.setStroke(new RGB(17, 95, 166));
series.setShowMarkers(true);
series.setMarkerIndex(1);
marker = Primitives.cross(0, 0, 6);
marker.setFill(new RGB(17, 95, 166));
series.setMarkerConfig(marker);
chart.addSeries(series);
series = new LineSeries<Site>();
series.setYAxisPosition(Position.LEFT);
series.setYField(siteAccess.veins());
series.setStroke(new RGB(166, 17, 32));
series.setShowMarkers(true);
series.setMarkerIndex(1);
marker = Primitives.diamond(0, 0, 6);
marker.setFill(new RGB(166, 17, 32));
series.setMarkerConfig(marker);
chart.addSeries(series);
update =
new Timer() {
@Override
public void run() {
Date startDate = CalendarUtil.copyDate(time.getStartDate());
Date endDate = CalendarUtil.copyDate(time.getEndDate());
CalendarUtil.addDaysToDate(startDate, 1);
CalendarUtil.addDaysToDate(endDate, 1);
chart
.getStore()
.add(
new Site(
endDate,
Math.random() * 20 + 80,
Math.random() * 20 + 40,
Math.random() * 20));
time.setStartDate(startDate);
time.setEndDate(endDate);
chart.redrawChart();
}
};
update.scheduleRepeating(1000);
ToggleButton animation = new ToggleButton("Animate");
animation.addValueChangeHandler(
new ValueChangeHandler<Boolean>() {
@Override
public void onValueChange(ValueChangeEvent<Boolean> event) {
chart.setAnimated(event.getValue());
}
});
animation.setValue(true, true);
ToolBar toolBar = new ToolBar();
toolBar.add(animation);
ContentPanel panel = new FramedPanel();
panel.getElement().getStyle().setMargin(10, Unit.PX);
panel.setCollapsible(true);
panel.setHeadingText("Live Chart");
panel.setPixelSize(620, 500);
panel.setBodyBorder(true);
VerticalLayoutContainer layout = new VerticalLayoutContainer();
panel.add(layout);
toolBar.setLayoutData(new VerticalLayoutData(1, -1));
layout.add(toolBar);
chart.setLayoutData(new VerticalLayoutData(1, 1));
layout.add(chart);
panel.addAttachHandler(
new AttachEvent.Handler() {
@Override
public void onAttachOrDetach(AttachEvent event) {
if (event.isAttached() == false) {
update.cancel();
}
}
});
return panel;
}
