Java tutorial
/* AWE - Amanzi Wireless Explorer * http://awe.amanzi.org * (C) 2008-2009, AmanziTel AB * * This library is provided under the terms of the Eclipse Public License * as described at http://www.eclipse.org/legal/epl-v10.html. Any use, * reproduction or distribution of the library constitutes recipient's * acceptance of this agreement. * * This library is distributed WITHOUT ANY WARRANTY; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. */ package org.amanzi.awe.charts.ui; import java.util.ArrayList; import java.util.Collection; import java.util.HashMap; import java.util.List; import java.util.Map; import org.amanzi.awe.charts.builder.dataset.dto.ICategoryRow; import org.amanzi.awe.charts.builder.dataset.dto.IColumn; import org.amanzi.awe.charts.builder.dataset.dto.ITimeRow; import org.amanzi.awe.charts.impl.ChartModelPlugin; import org.amanzi.awe.charts.manger.ChartsManager; import org.amanzi.awe.charts.model.ChartType; import org.amanzi.awe.charts.model.IChartDataFilter; import org.amanzi.awe.charts.model.IChartModel; import org.amanzi.awe.charts.model.IRangeAxis; import org.amanzi.awe.charts.model.provider.IChartModelProvider; import org.amanzi.awe.charts.ui.widget.ItemsSelectorWidget; import org.amanzi.awe.charts.ui.widget.ItemsSelectorWidget.ItemSelectedListener; import org.amanzi.awe.statistics.dto.IStatisticsGroup; import org.amanzi.awe.statistics.filter.IStatisticsFilter; import org.amanzi.awe.statistics.model.DimensionType; import org.amanzi.awe.statistics.model.IStatisticsModel; import org.amanzi.awe.statistics.ui.filter.impl.StatisticsFilter; import org.amanzi.awe.ui.manager.AWEEventManager; import org.amanzi.neo.models.exceptions.ModelException; import org.apache.commons.lang3.StringUtils; import org.apache.log4j.Logger; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.part.ViewPart; import org.jfree.chart.ChartMouseEvent; import org.jfree.chart.ChartMouseListener; import org.jfree.chart.JFreeChart; import org.jfree.chart.entity.CategoryItemEntity; import org.jfree.chart.entity.XYItemEntity; import org.jfree.data.time.RegularTimePeriod; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.experimental.chart.swt.ChartComposite; /** * TODO Purpose of * <p> * </p> * * @author Vladislav_Kondratenko * @since 1.0.0 */ public class ChartsView extends ViewPart implements ItemSelectedListener, ChartMouseListener { private static final Logger LOGGER = Logger.getLogger(ChartsView.class); public static final String VIEW_ID = "org.amanzi.awe.views.ChartsView"; private static final String GROUPS_LABEL = "Group(s)"; private static final String CELLS_LABEL = "Column(s)"; private static final String CHART_NAME_FORMAT = "%s, %s"; private Composite controlsComposite; private ItemsSelectorWidget groupSelectorWidget; private ItemsSelectorWidget columnsSelectorWidget; private ChartComposite chartComposite; private ChartType type = ChartType.TIME_CHART; private final Map<ChartsCahceId, JFreeChart> chartsCache = new HashMap<ChartsCahceId, JFreeChart>(); private IStatisticsModel model; private IStatisticsFilter container; @Override public void createPartControl(final Composite parent) { parent.setLayout(new GridLayout(1, false)); controlsComposite = new Composite(parent, SWT.NONE); controlsComposite.setLayout(new GridLayout(1, false)); controlsComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); Composite buttonsContainer = new Composite(controlsComposite, SWT.NONE); buttonsContainer.setLayout(new GridLayout(4, true)); buttonsContainer.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); createRadioButton(buttonsContainer, "Line", true, ChartType.TIME_CHART); createRadioButton(buttonsContainer, "Bar", false, ChartType.BAR_CHART); createRadioButton(buttonsContainer, "Stacked", false, ChartType.STACKED_CHART); createRadioButton(buttonsContainer, "Pie", false, ChartType.PIE_CHART); Composite filteringContainer = new Composite(controlsComposite, SWT.BORDER); filteringContainer.setLayout(new GridLayout(2, true)); filteringContainer.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); groupSelectorWidget = new ItemsSelectorWidget(filteringContainer, this, GROUPS_LABEL); columnsSelectorWidget = new ItemsSelectorWidget(filteringContainer, this, CELLS_LABEL); groupSelectorWidget.initializeWidget(); columnsSelectorWidget.initializeWidget(); int width = parent.getShell().getSize().x; chartComposite = new ChartComposite(parent, SWT.FILL, null, ChartComposite.DEFAULT_WIDTH, ChartComposite.DEFAULT_HEIGHT, ChartComposite.DEFAULT_MINIMUM_DRAW_WIDTH, ChartComposite.DEFAULT_MINIMUM_DRAW_HEIGHT, width, ChartComposite.DEFAULT_MAXIMUM_DRAW_HEIGHT, true, true, true, true, true, true); chartComposite.setLayoutData(new GridData(GridData.FILL_BOTH)); chartComposite.setVisible(false); chartComposite.addChartMouseListener(this); } /** * @param allStatisticsGroups * @return */ private List<String> getStatisticsGroups(final Iterable<IStatisticsGroup> allStatisticsGroups) { List<String> groups = new ArrayList<String>(); for (IStatisticsGroup group : allStatisticsGroups) { groups.add(group.getPropertyValue()); } return groups; } /** * Creates radio button with the text specified and assigns the layout data * * @param parent parent composite * @param chartType TODO */ private Button createRadioButton(final Composite parent, final String text, final boolean selected, final ChartType chartType) { Button radioButton = new Button(parent, SWT.RADIO); radioButton.setText(text); radioButton.setSelection(selected); GridData layoutData = new GridData(SWT.FILL, SWT.CENTER, true, false); radioButton.setLayoutData(layoutData); radioButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { type = chartType; onItemSelected(); } }); return radioButton; } @Override public void setFocus() { // TODO Auto-generated method stub } @Override public void onItemSelected() { if (container == null) { return; } IChartModel chartModel = createChartModel(model, container); updateChart(chartModel); } /** * @param model * @param container */ public void fireStatisticsChanged(final IStatisticsModel model, final IStatisticsFilter container) { this.model = model; this.container = container; List<String> groups; try { groups = getStatisticsGroups( model.getAllStatisticsGroups(DimensionType.TIME, container.getPeriod().getId())); groupSelectorWidget.setItems(groups); columnsSelectorWidget.setItems(model.getColumns()); IChartModel chartModel = createChartModel(model, container); updateChart(chartModel); } catch (ModelException e) { LOGGER.error("can't init necessary field with statistics model " + model + " and period" + container); } } /** * firstly trying to find chart in cache. if not exists - create new one * * @param chartModel */ private void updateChart(final IChartModel chartModel) { LOGGER.info("Chart updating begin, for model " + chartModel); Long startTime = System.currentTimeMillis(); ChartsCahceId ID = new ChartsCahceId(chartModel, container); JFreeChart chart = chartsCache.get(ID); if (chart == null) { chart = ChartsManager.getInstance().buildChart(chartModel); chartsCache.put(ID, chart); } LOGGER.info("Chart updated in : " + (System.currentTimeMillis() - startTime) + " ms"); chartComposite.setChart(chart); chartComposite.forceRedraw(); chartComposite.setVisible(true); } /** * @param model * @param container */ private IChartModel createChartModel(final IStatisticsModel model, final IStatisticsFilter container) { IChartModelProvider chartProvider = ChartModelPlugin.getDefault().getChartModelProvider(); IChartDataFilter filter = chartProvider.getChartDataFilter(container.getStartTime(), container.getEndTime(), groupSelectorWidget.getSelected()); IRangeAxis axis = chartProvider.getRangeAxisContainer("value", columnsSelectorWidget.getSelected()); String chartName = String.format(CHART_NAME_FORMAT, model.getName(), container.getPeriod().getId()); return chartProvider.getChartModel(chartName, "cells", type, model, container.getPeriod(), filter, axis); } /** * <p> * ID of charts in cache * </p> * * @author Vladislav_Kondratenko * @since 1.0.0 */ private static class ChartsCahceId { private final IChartModel model; private final IStatisticsFilter container; /** * @param model * @param container */ public ChartsCahceId(final IChartModel model, final IStatisticsFilter container) { super(); this.model = model; this.container = container; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + (container == null ? 0 : container.hashCode()); result = prime * result + (model == null ? 0 : model.hashCode()); return result; } @Override public boolean equals(final Object obj) { if (this == obj) { return true; } if (obj == null) { return false; } if (getClass() != obj.getClass()) { return false; } ChartsCahceId other = (ChartsCahceId) obj; if (container == null) { if (other.container != null) { return false; } } else if (!container.equals(other.container)) { return false; } if (model == null) { if (other.model != null) { return false; } } else if (!model.equals(other.model)) { return false; } return true; } } @Override public void dispose() { chartsCache.clear(); super.dispose(); } @Override public void chartMouseClicked(final ChartMouseEvent event) { if (event == null) { return; } Collection<String> groups = null; long startDate = Long.MIN_VALUE; long endDate = Long.MAX_VALUE; String cellName = StringUtils.EMPTY; if (event.getEntity() instanceof CategoryItemEntity) { CategoryItemEntity entity = (CategoryItemEntity) event.getEntity(); IColumn period = (IColumn) entity.getColumnKey(); ICategoryRow column = period.getItemByName((String) entity.getRowKey()); groups = column.getGroupsNames(); startDate = period.getStartDate(); endDate = period.getEndDate(); cellName = column.getName(); } else if (event.getEntity() instanceof XYItemEntity) { XYItemEntity entity = (XYItemEntity) event.getEntity(); TimeSeriesCollection dataset = (TimeSeriesCollection) entity.getDataset(); TimeSeries ts = dataset.getSeries(entity.getSeriesIndex()); ITimeRow row = (ITimeRow) ts.getKey(); RegularTimePeriod period = ts.getTimePeriod(entity.getItem()); startDate = period.getStart().getTime(); endDate = container.getPeriod().addPeriod(startDate); groups = row.getGroupsForTime(startDate); cellName = row.getName(); } else { return; } AWEEventManager.getManager().fireShowInViewEvent(model, new StatisticsFilter(container.getPeriod(), startDate, endDate, groups, cellName), this); } @Override public void chartMouseMoved(final ChartMouseEvent arg0) { // TODO Auto-generated method stub } }