[JENKINS-21927] Redesign of build summary page

- List in build summary updated to a sortable table that is better readable and more usable. The displayed values were fixed, e.g. negative result in delta can be displayed.
- The design is fully defined in jelly instead of in Java code.
- CppcheckSummary class is not needed, removed.

src/main/java/org/jenkinsci/plugins/cppcheck/CppcheckResult.java

@@ -143,29 +143,10 @@ public Object getDynamic(final String link, final StaplerRequest request, final
         return null;
     }
 
-
-    /**
-     * Renders the summary Cppcheck report for the build result.
-     *
-     * @return the HTML fragment of the summary Cppcheck report
-     */
-    public String getSummary() {
-        return CppcheckSummary.createReportSummary(this);
-    }
-
-    /**
-     * Renders the detailed summary Cppcheck report for the build result.
-     *
-     * @return the HTML fragment of the summary Cppcheck report
-     */
-    public String getDetails() {
-        return CppcheckSummary.createReportSummaryDetails(this);
-    }
-
     /**
      * Gets the previous Cppcheck result for the build result.
      *
-     * @return the previous Cppcheck result
+     * @return the previous Cppcheck result or null
      */
     public CppcheckResult getPreviousResult() {
         CppcheckBuildAction previousAction = getPreviousAction();
@@ -190,6 +171,31 @@ private CppcheckBuildAction getPreviousAction() {
         return null;
     }
 
+    /**
+     * Get differences between current and previous statistics.
+     * 
+     * @return the differences
+     */
+    public CppcheckStatistics getDiff(){
+        CppcheckStatistics current = getStatistics();
+        CppcheckResult previousResult = getPreviousResult();
+
+        if(previousResult == null) {
+            return new CppcheckStatistics(0, 0, 0, 0, 0, 0, current.getVersions());
+        }
+
+        CppcheckStatistics previous = previousResult.getStatistics();
+
+        return new CppcheckStatistics(
+                current.getNumberErrorSeverity() - previous.getNumberErrorSeverity(),
+                current.getNumberWarningSeverity() - previous.getNumberWarningSeverity(),
+                current.getNumberStyleSeverity() - previous.getNumberStyleSeverity(),
+                current.getNumberPerformanceSeverity() - previous.getNumberPerformanceSeverity(),
+                current.getNumberInformationSeverity() - previous.getNumberInformationSeverity(),
+                current.getNumberNoCategorySeverity() - previous.getNumberNoCategorySeverity(),
+                current.getVersions());
+    }
+
     /**
      * Returns the number of new errors from the previous build result.
      *

src/main/java/org/jenkinsci/plugins/cppcheck/CppcheckStatistics.java

@@ -113,4 +113,14 @@ public Set<String> getVersions() {
 		return (versions != null) ? Collections.unmodifiableSet(versions)
 				: null;
 	}
+
+	public String formatDiff(int value)
+	{
+		if(value == 0)
+		{
+			return "";
+		}
+
+		return String.format("%+d", value);
+	}
 }

src/main/resources/org/jenkinsci/plugins/cppcheck/CppcheckBuildAction/summary.jelly

@@ -1,9 +1,74 @@
 <j:jelly xmlns:j="jelly:core"
-         xmlns:t="/lib/hudson">
+    xmlns:d="jelly:define"
+    xmlns:l="/lib/layout"
+    xmlns:t="/lib/hudson"
+    xmlns:f="/lib/form"
+    xmlns:i="jelly:fmt">
+
     <t:summary icon="/plugin/cppcheck/icons/cppcheck-48.png">
-        ${it.result.summary}
-        <ul>
-            ${it.result.details}
-        </ul>
+        <div><a href="cppcheckResult">${%Cppcheck}</a></div>
+
+        <j:set var="current" value="${it.result.statistics}"/>
+        <j:set var="diff" value="${it.result.diff}"/>
+
+        <style type="text/css">
+        #cppcheckSummary { width: auto; }
+        #cppcheckSummary .number { text-align: right; }
+        </style>
+
+        <table class="pane sortable" id="cppcheckSummary">
+            <thead>
+                <tr>
+                    <td class="pane-header">${%Severity}</td>
+                    <td class="pane-header">${%Count}</td>
+                    <td class="pane-header">${%Delta}</td>
+                </tr>
+            </thead>
+            <tbody>
+                <tr>
+                    <td class="pane" data="6">${%Error}</td>
+                    <td class="pane number" data="${current.numberErrorSeverity}">${current.numberErrorSeverity}</td>
+                    <td class="pane number" data="${diff.numberErrorSeverity}">${diff.formatDiff(diff.numberErrorSeverity)}</td>
+                </tr>
+
+                <tr>
+                    <td class="pane" data="5">${%Warning}</td>
+                    <td class="pane number" data="${current.numberWarningSeverity}">${current.numberWarningSeverity}</td>
+                    <td class="pane number" data="${diff.numberWarningSeverity}">${diff.formatDiff(diff.numberWarningSeverity)}</td>
+                </tr>
+
+                <tr>
+                    <td class="pane" data="4">${%Style}</td>
+                    <td class="pane number" data="${current.numberStyleSeverity}">${current.numberStyleSeverity}</td>
+                    <td class="pane number" data="${diff.numberStyleSeverity}">${diff.formatDiff(diff.numberStyleSeverity)}</td>
+                </tr>
+
+                <tr>
+                    <td class="pane" data="3">${%Performance}</td>
+                    <td class="pane number" data="${current.numberPerformanceSeverity}">${current.numberPerformanceSeverity}</td>
+                    <td class="pane number" data="${diff.numberPerformanceSeverity}">${diff.formatDiff(diff.numberPerformanceSeverity)}</td>
+                </tr>
+
+                <tr>
+                    <td class="pane" data="2">${%Information}</td>
+                    <td class="pane number" data="${current.numberInformationSeverity}">${current.numberInformationSeverity}</td>
+                    <td class="pane number" data="${diff.numberInformationSeverity}">${diff.formatDiff(diff.numberInformationSeverity)}</td>
+                </tr>
+
+                <tr>
+                    <td class="pane" data="1">${%No Category}</td>
+                    <td class="pane number" data="${current.numberNoCategorySeverity}">${current.numberNoCategorySeverity}</td>
+                    <td class="pane number" data="${diff.numberNoCategorySeverity}">${diff.formatDiff(diff.numberNoCategorySeverity)}</td>
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr class="sortbottom">
+                    <td class="pane-header" data="0">${%Total}</td>
+                    <td class="pane-header number" data="${current.numberTotal}">${current.numberTotal}</td>
+                    <td class="pane-header number" data="${diff.numberTotal}">${diff.formatDiff(diff.numberTotal)}</td>
+                </tr>
+            </tfoot>
+        </table>
+
     </t:summary>
-</j:jelly>
+</j:jelly>