Some work on report totals (#13555)

* some work on totals

* fix graphs

* tweak rendering of totals row

* disable evolution for totals row

* let plugins configure totals row visibility

* remove metadata

* more tweaks and make it configurable

* improve code and performance

* fix some tests

* lots of improvements

* support bandwidth and other plugins

* fix tests

* add screenshot test

* also fix existing test

* add new method supportsTotalRow

* various fixes

* Updating some expected test files.

1 files changed, 21 insertions, 0 deletions

diff --git a/core/DataTable.php b/core/DataTable.php
index b14281938c..2f546d2905 100644
--- a/core/DataTable.php
+++ b/core/DataTable.php
@@ -197,6 +197,7 @@ class DataTable implements DataTableInterface, \IteratorAggregate, \ArrayAccess
 
     /** The original label of the Summary Row. */
     const LABEL_SUMMARY_ROW = -1;
+    const LABEL_TOTALS_ROW = -2;
 
     /**
      * Name for metadata that contains extra {@link Piwik\Plugin\ProcessedMetric}s for a DataTable.
@@ -302,6 +303,11 @@ class DataTable implements DataTableInterface, \IteratorAggregate, \ArrayAccess
     protected $summaryRow = null;
 
     /**
+     * @var \Piwik\DataTable\Row
+     */
+    protected $totalsRow = null;
+
+    /**
      * Table metadata. Read [this](#class-desc-the-basics) to learn more.
      *
      * Any data that describes the data held in the table's rows should go here.
@@ -402,6 +408,16 @@ class DataTable implements DataTableInterface, \IteratorAggregate, \ArrayAccess
         }
     }
 
+    public function setTotalsRow(Row $totalsRow)
+    {
+        $this->totalsRow = $totalsRow;
+    }
+
+    public function getTotalsRow()
+    {
+        return $this->totalsRow;
+    }
+
     /**
      * Returns the name of the column this table was sorted by (if any).
      *
@@ -1868,6 +1884,11 @@ class DataTable implements DataTableInterface, \IteratorAggregate, \ArrayAccess
         $this->queuedFilters = array();
     }
 
+    public function getQueuedFilters()
+    {
+        return $this->queuedFilters;
+    }
+
     /**
      * @return \ArrayIterator|Row[]
      */