Roll Observatory deps (charted -> ^0.3.0)

packages/charted/lib/charts/chart_data.dart

 //
 // Copyright 2014 Google Inc. All rights reserved.
 //
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file or at
 // https://developers.google.com/open-source/licenses/bsd
 //
 
 part of charted.charts;
 
 ///
 /// Interface to be implemented by data providers to give tabular access to
 /// data for chart renderers.
 ///
 abstract class ChartData {
   /// Read-only access to column specs
   Iterable<ChartColumnSpec> get columns;
 
   /// Read-only access to rows
   Iterable<Iterable> get rows;
 
   /// Create a new instance of [ChartData]'s internal implementation
-  factory ChartData(
-      Iterable<ChartColumnSpec> columns, Iterable<Iterable> rows) = DefaultChartDataImpl;
+  factory ChartData(Iterable<ChartColumnSpec> columns,
+      Iterable<Iterable> rows) = DefaultChartDataImpl;
 }
 
 ///
 /// Interface implemented by [ChartData] transformers.
 /// Examples:
 ///   [AggregationTransformer] to compute aggregated rows/columns
 ///   [FilterTransformer] to filter data
 ///   [TransposeTransformer] to convert rows to columns and vice-versa
 ///
 abstract class ChartDataTransform {
   /// Create a new instance of [ChartData] by selecting a subset
   /// of rows and columns from the current one
   ChartData transform(ChartData source);
 }
 
-
 ///
 /// Implementation of [ChangeRecord], that is used to notify when rows get added
 /// or removed to ChartData
 ///
 class ChartRowChangeRecord implements ChangeRecord {
   /// Changes to the rows - contains all updates to rows since last notification.
   final List<ListChangeRecord> changes;
 
   const ChartRowChangeRecord(this.changes);
 }
@@ skipping 16 matching lines @@
 ///
 /// Meta information for each column in ChartData
 ///
 class ChartColumnSpec {
   static const String TYPE_BOOLEAN = 'boolean';
   static const String TYPE_DATE = 'date';
   static const String TYPE_NUMBER = 'number';
   static const String TYPE_STRING = 'string';
   static const String TYPE_TIMESTAMP = 'timestamp';
 
-  static const List ORDINAL_SCALES = const [ TYPE_STRING ];
-  static const List LINEAR_SCALES = const [ TYPE_NUMBER ];
-  static const List TIME_SCALES = const [ TYPE_DATE, TYPE_TIMESTAMP ];
+  static const List ORDINAL_SCALES = const [TYPE_STRING];
+  static const List LINEAR_SCALES = const [TYPE_NUMBER];
+  static const List TIME_SCALES = const [TYPE_DATE, TYPE_TIMESTAMP];
 
   /// Formatter for values that belong to this column
   final FormatFunction formatter;
 
   /// Label for the column.  Used in legend, tooltips etc;
   /// When not specified, defaults to empty string.
   final String label;
 
   /// Type of data in this column. Used for interpolations, computing
   /// scales and ranges. When not specified, it is assumed to be "number"
   /// for measures and "string" for dimensions.
   final String type;
 
   /// Indicates if this column requires [OrdinalScale].
   ///
   /// If not specified, an ordinal scale is used for string columns and
   /// quantitative scales are used for others.
   final bool useOrdinalScale;
 
   /// Initialize axis scale according to [ChartColumnSpec] type.
   /// This logic is extracted from [ChartArea] implementation for conveniently
   /// adding more scale types.
   Scale createDefaultScale() {
     if (useOrdinalScale == true) {
       return new OrdinalScale();
-    }
-    else if (LINEAR_SCALES.contains(type)) {
+    } else if (LINEAR_SCALES.contains(type)) {
       return new LinearScale();
-    }
-    else if (TIME_SCALES.contains(type)) {
+    } else if (TIME_SCALES.contains(type)) {
       return new TimeScale();
     }
     return null;
   }
 
-  ChartColumnSpec({this.label, String type : TYPE_NUMBER,
-      this.formatter, bool useOrdinalScale})
-      : useOrdinalScale =
-            useOrdinalScale == true ||
+  ChartColumnSpec(
+      {this.label,
+      String type: TYPE_NUMBER,
+      this.formatter,
+      bool useOrdinalScale})
+      : useOrdinalScale = useOrdinalScale == true ||
             useOrdinalScale == null && ORDINAL_SCALES.contains(type),
         type = type;
 }