OO-716: replace the flot library in the course statistics with the bar chart...

OO-716: replace the flot library in the course statistics with the bar chart component which use d3.js

src/main/java/org/olat/core/gui/components/chart/BarSeries.java

@@ -20,12 +20,10 @@
 package org.olat.core.gui.components.chart;
 
 import java.util.ArrayList;
-import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 
-import edu.emory.mathcs.backport.java.util.Collections;
-
 /**
  * 
  * @author srosse, stephane.rosse@frentix.com, http://www.frentix.com
@@ -90,8 +88,8 @@ public class BarSeries {
 	}
 
 	public static Stringuified getDatasAndColors(List<BarSeries> seriesList, String defaultBarClass) {
-		Map<Comparable<?>,String> thickSet = new HashMap<>();
-		Map<Comparable<?>,String> colorsMap = new HashMap<>();
+		Map<Comparable<?>,String> thickSet = new LinkedHashMap<>();
+		Map<Comparable<?>,String> colorsMap = new LinkedHashMap<>();
 		for(BarSeries series:seriesList) {
 			for(BarPoint point:series.getPoints()) {
 				Comparable<?> category = point.getCategory();
@@ -109,8 +107,6 @@ public class BarSeries {
 		}
 		
 		List<Comparable<?>> thickList = new ArrayList<>(thickSet.keySet());
-		Collections.sort(thickList);
-		Collections.reverse(thickList);
 
 		StringBuilder data = new StringBuilder();
 		for(int i=0; i<thickList.size(); i++) {

src/main/java/org/olat/course/statistic/StatisticDisplayController.java

@@ -36,6 +36,8 @@ import java.util.Map;
 
 import org.olat.core.gui.UserRequest;
 import org.olat.core.gui.components.Component;
+import org.olat.core.gui.components.chart.BarChartComponent;
+import org.olat.core.gui.components.chart.BarSeries;
 import org.olat.core.gui.components.table.ColumnDescriptor;
 import org.olat.core.gui.components.table.CustomRenderColumnDescriptor;
 import org.olat.core.gui.components.table.TableController;
@@ -78,28 +80,12 @@ public class StatisticDisplayController extends BasicController {
 		public String chartIntroStr;
 		private int numElements = 0;
 		
-		String getLabelsArray() {
-			StringBuilder sb = new StringBuilder();
-			long count = 0;
-			for (String aLabel : labelList) {
-				if(sb.length() >0) {
-					sb.append(',');
-				}
-				sb.append("[").append(count++).append(",'").append(aLabel).append("']");
-			}
-			return sb.toString();
+		public List<Integer> getValues() {
+			return values;
 		}
 		
-		String getValuesArray() {
-			StringBuilder sb = new StringBuilder();
-			long count = 0;
-			for (Integer v : values) {
-				if(sb.length() >0) {
-					sb.append(',');
-				}
-				sb.append("[").append(count++).append(",'").append(v.toString()).append("']");
-			}
-			return sb.toString();
+		public List<String> getLabels() {
+			return labelList;
 		}
 	}
 	
@@ -401,13 +387,21 @@ public class StatisticDisplayController extends BasicController {
 		try{
 			statisticVc_.contextPut("chartAlt", getTranslator().translate("chart.alt"));
 			statisticVc_.contextPut("chartIntro", graph.chartIntroStr);
-
-			String thicks = graph.getLabelsArray();
-			String vals = graph.getValuesArray();
-			statisticVc_.contextPut("thicks", thicks);
-			statisticVc_.contextPut("d2", vals);
 			statisticVc_.contextPut("hasChart", Boolean.TRUE);
 			statisticVc_.contextPut("hasChartError", Boolean.FALSE);
+			
+			BarChartComponent chartCmp = new BarChartComponent("stats");
+			List<String> labels = graph.getLabels();
+			List<Integer> values = graph.getValues();
+			BarSeries serie = new BarSeries();
+			for(int i=0; i<labels.size(); i++) {
+				double value = values.get(i).doubleValue();
+				String category = labels.get(i);
+				serie.add(value, category);
+			}
+			chartCmp.addSeries(serie);
+			statisticVc_.put("chart", chartCmp);
+			
 		} catch(RuntimeException re) {
 			log_.warn("generateCharts: RuntimeException during chart generation: "+re, re);
 		}

src/main/java/org/olat/course/statistic/_content/statistic.html

@@ -8,33 +8,6 @@
 #if($hasChart)
 	<hr class="b_form_spacer"/>
 	<p>$chartIntro</p>
-	<div id="placeholder" style="width:600px;height:300px"></div>
-	<script type="text/javascript" src='$r.staticLink("js/jquery/flot/jquery.flot.min.js")'></script>
-	<script type="text/javascript">
-	jQuery(function () {
-		var d2 = [$d2];
-		var options = {
-			xaxis: {
-				tickLength: 0, // hide gridlines
-				ticks: [$thicks]
-			},
-			grid: {
-				borderWidth: 1
-			}
-		};
-		
-		var container = jQuery("#placeholder");
-		jQuery.plot(container, [{
-			color:'#025d8c',
-			data: d2,
-			bars: {
-				show: true,
-				align:'center',
-				lineWidth: 2,
-				barWidth: 0.8
-			}
-		}],options);
-	});
-	</script>
+	$r.render("chart")
 #end
 	
\ No newline at end of file

src/main/java/org/olat/course/statistic/daily/_content/statistic.html

@@ -2,32 +2,7 @@
 #if($hasChart)
 	<hr class="b_form_spacer"/>
 	<p>$chartIntro</p>
-	<div id="placeholder" style="width:600px;height:300px"></div>
-	<script type="text/javascript" src='$r.staticLink("js/jquery/flot/jquery.flot.min.js")'></script>
-	<script type="text/javascript">
-	jQuery(function () {
-		var d2 = [$d2];
-		var options = {
-			xaxis: {
-				tickLength: 0, // hide gridlines
-				ticks: [$thicks]
-			},
-			grid: {
-				borderWidth: 1
-			}
-		};
-		jQuery.plot(jQuery("#placeholder"), [{
-			color:'#025d8c',
-			data: d2,
-			bars: {
-				show: true,
-				align:'center',
-				lineWidth: 2,
-				barWidth: 0.8
-			}
-		}],options);
-	});
-	</script>
+	$r.render("chart")
 #end
 
 	
\ No newline at end of file

src/main/java/org/olat/course/statistic/weekly/_content/statistic.html

@@ -2,30 +2,6 @@
 #if($hasChart)
 	<hr class="b_form_spacer"/>
 	<p>$chartIntro</p>
-	<div id="placeholder" style="width:600px;height:300px"></div>
-	<script type="text/javascript" src='$r.staticLink("js/jquery/flot/jquery.flot.min.js")'></script>
-	<script type="text/javascript">
-	jQuery(function () {
-		var d2 = [$d2];
-		var options = {
-			xaxis: {
-				tickLength: 0, // hide gridlines
-				ticks: [$thicks]
-			},
-			grid: {
-				borderWidth: 1
-			}
-		};
-		jQuery.plot(jQuery("#placeholder"), [{
-			color:'#025d8c',
-			data: d2,
-			bars: {
-				show: true,
-				align:'center',
-				lineWidth: 2,
-				barWidth: 0.8
-			}
-		}],options);
-	});
-	</script>
+	$r.render("chart")
 #end
+

src/main/webapp/static/js/jquery/flot/LICENSE.txt

-Copyright (c) 2007-2009 IOLA and Ole Laursen
-
-Permission is hereby granted, free of charge, to any person
-obtaining a copy of this software and associated documentation
-files (the "Software"), to deal in the Software without
-restriction, including without limitation the rights to use,
-copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following
-conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.

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