android/src/console/src/org/netxms/ui/android/main/dashboards/elements/LineChartElement.java

   1 /**
   2  *
   3  */
   4 package org.netxms.ui.android.main.dashboards.elements;
   5
   6 import java.util.Date;
   7 import java.util.concurrent.ScheduledExecutorService;
   8
   9 import org.netxms.client.datacollection.DciData;
  10 import org.netxms.client.datacollection.DciDataRow;
  11 import org.netxms.ui.android.helpers.Colors;
  12 import org.netxms.ui.android.helpers.CustomLabel;
  13 import org.netxms.ui.android.main.activities.helpers.ChartDciConfig;
  14 import org.netxms.ui.android.main.dashboards.configs.LineChartConfig;
  15 import org.netxms.ui.android.service.ClientConnectorService;
  16
  17 import android.content.Context;
  18 import android.content.SharedPreferences;
  19 import android.preference.PreferenceManager;
  20 import android.util.Log;
  21
  22 import com.jjoe64.graphview.GraphView;
  23 import com.jjoe64.graphview.GraphView.GraphViewData;
  24 import com.jjoe64.graphview.GraphView.LegendAlign;
  25 import com.jjoe64.graphview.GraphViewSeries;
  26 import com.jjoe64.graphview.GraphViewSeries.GraphViewSeriesStyle;
  27 import com.jjoe64.graphview.LineGraphView;
  28
  29 /**
  30  * Bar chart element
  31  */
  32 public class LineChartElement extends AbstractDashboardElement
  33 {
  34         private static final String TAG = "nxclient/LineChartElement";
  35
  36         private LineChartConfig config;
  37         private GraphView graphView = null;
  38         private final SharedPreferences sp;
  39
  40         /**
  41          * @param context
  42          * @param xmlConfig
  43          */
  44         public LineChartElement(Context context, String xmlConfig, ClientConnectorService service, ScheduledExecutorService scheduleTaskExecutor)
  45         {
  46                 super(context, xmlConfig, service, scheduleTaskExecutor);
  47                 try
  48                 {
  49                         config = LineChartConfig.createFromXml(xmlConfig);
  50                 }
  51                 catch (Exception e)
  52                 {
  53                         Log.e(TAG, "Error parsing element config", e);
  54                         config = new LineChartConfig();
  55                 }
  56
  57                 sp = PreferenceManager.getDefaultSharedPreferences(context);
  58                 graphView = new LineGraphView(context, config.getTitle());
  59                 graphView.getGraphViewStyle().setTextSize(Integer.parseInt(sp.getString("global.graph.textsize", "10")));
  60                 graphView.getGraphViewStyle().setLegendWidth(240);
  61                 graphView.setCustomLabelFormatter(new CustomLabel(Integer.parseInt(sp.getString("global.multipliers", "1"))));
  62                 // TODO: 2014May25 Find a best way to handle this setting
  63                 //graphView.setShowLegend(config.isShowLegend());
  64                 graphView.setShowLegend(sp.getBoolean("global.graph.legend", true));
  65                 graphView.setScalable(false);
  66                 graphView.setScrollable(false);
  67                 graphView.setLegendAlign(LegendAlign.TOP);
  68         }
  69
  70         /* (non-Javadoc)
  71          * @see android.view.View#onAttachedToWindow()
  72          */
  73         @Override
  74         protected void onAttachedToWindow()
  75         {
  76                 super.onAttachedToWindow();
  77                 startRefreshTask(config.getRefreshRate());
  78         }
  79
  80         /* (non-Javadoc)
  81          * @see org.netxms.ui.android.main.dashboards.elements.AbstractDashboardElement#refresh()
  82          */
  83         @Override
  84         public void refresh()
  85         {
  86                 final ChartDciConfig[] items = config.getDciList();
  87                 Log.v(TAG, "refresh(): " + items.length + " items to load");
  88                 if (items.length == 0)
  89                         return;
  90
  91                 final long endTime = System.currentTimeMillis();
  92                 final long startTime = endTime - config.getTimeRangeMillis();
  93
  94                 try
  95                 {
  96                         final DciData[] dciData = new DciData[items.length];
  97                         for (int i = 0; i < dciData.length; i++)
  98                         {
  99                                 dciData[i] = service.getSession().getCollectedData(items[i].nodeId, items[i].dciId, new Date(startTime), new Date(endTime), 0);
 100                         }
 101                         Log.v(TAG, "refresh(): data retrieved from server");
 102
 103                         post(new Runnable()
 104                         {
 105                                 @Override
 106                                 public void run()
 107                                 {
 108                                         for (int i = 0; i < dciData.length && i < Colors.DEFAULT_ITEM_COLORS.length; i++)
 109                                         {
 110                                                 DciDataRow[] dciDataRow = dciData[i].getValues();
 111                                                 GraphViewData[] gvData = new GraphViewData[dciDataRow.length];
 112                                                 for (int j = dciDataRow.length - 1, k = 0; j >= 0; j--, k++)
 113                                                         // dciData are reversed!
 114                                                         gvData[k] = new GraphViewData(dciDataRow[j].getTimestamp().getTime(), dciDataRow[j].getValueAsDouble());
 115                                                 int color = items[i].getColorAsInt();
 116                                                 color = color == -1 ? Colors.DEFAULT_ITEM_COLORS[i] : swapRGB(color);
 117                                                 GraphViewSeries series = new GraphViewSeries(items[i].getName(), new GraphViewSeriesStyle(color | 0xFF000000, 3), gvData);
 118                                                 graphView.addSeries(series);
 119                                         }
 120                                         graphView.setViewPort(startTime, endTime - startTime + 1);
 121                                         Log.v(TAG, "refresh(): " + dciData.length + " series added; viewport set to " + startTime + "/" + (endTime - startTime + 1));
 122
 123                                         if (getChildCount() == 0)
 124                                                 addView(graphView);
 125                                         else
 126                                                 graphView.redrawAll();
 127                                 }
 128                         });
 129                 }
 130                 catch (Exception e)
 131                 {
 132                         Log.e(TAG, "Exception while reading data from server", e);
 133                 }
 134         }
 135 }