fix(ignores): fix git ignore misconfiguration

.gitignore

@@ -2,5 +2,5 @@ logs
 *.log
 node_modules
 .idea
-lib
+/lib
 npm-debug.log*

src/lib/charts/pie/PieD3Svg.js

@@ -0,0 +1,144 @@
+import d3                                           from 'd3';
+import { degreesToRadians, midAngle, findNeighbor } from '../../../ArcUtils';
+import { getColorRange }                            from '../../../ColorUtils';
+
+
+const PieD3Svg = domRoot => {
+
+    // DOM elements
+    const element    = d3.select(domRoot);
+    const outline    = element.append('path').attr('class', 'nivo_pie_outline');
+    const slices     = element.append('g').attr('class', 'nivo_pie_slices');
+
+    // d3 generators
+    const pie        = d3.layout.pie();
+    const arc        = d3.svg.arc();
+
+    // used to store previous state for smart transitions
+    let previousData = [];
+
+    // an array to store decorator functions
+    let decorators   = [];
+
+    return {
+        draw(props) {
+            const {
+                data,
+                width, height,
+                sort,
+                keyProp, valueProp,
+                startAngle, endAngle, padAngle,
+                colors,
+                innerRadius,
+                transitionDuration, transitionEasing
+            } = props;
+
+            const identity = d => d.data[keyProp];
+            const color    = getColorRange(colors);
+
+            element.attr('transform', `translate(${width / 2}, ${height / 2})`);
+
+            pie
+                .sort(sort)
+                .value(d => d[valueProp])
+                .startAngle(degreesToRadians(startAngle))
+                .endAngle(degreesToRadians(endAngle))
+                .padAngle(degreesToRadians(padAngle))
+            ;
+
+            let radius = Math.min(width / 2, height / 2);
+
+            arc
+                .outerRadius(radius)
+                .innerRadius(radius * innerRadius)
+            ;
+
+            outline.attr('d', arc({
+                startAngle: degreesToRadians(startAngle),
+                endAngle:   degreesToRadians(endAngle)
+            }));
+
+            let slice = slices.selectAll('.nivo_pie_slice');
+
+            const newData = pie(data.map((d, i) => {
+                if (!d.color) {
+                    d.color = color(i);
+                }
+
+                return d;
+            }));
+
+            //console.log(_.cloneDeep(newData));
+
+            function arcTween(a) {
+                const i = d3.interpolate(this._current, a);
+                this._current = i(0);
+
+                return t => arc(i(t));
+            }
+
+            slice = slice.data(newData, identity);
+
+            // —————————————————————————————————————————————————————————————————————————————————————————————————————————
+            // ENTER: creates new elements
+            // —————————————————————————————————————————————————————————————————————————————————————————————————————————
+            slice.enter().append('path')
+                .attr('class', 'nivo_pie_slice')
+                .style('fill', d => d.data.color)
+                .each(function (d, i) {
+                    const angle = midAngle(d);
+
+                    this._current = findNeighbor(i, identity, previousData, newData) || _.assign({}, d, {
+                        startAngle: 0,
+                        endAngle:   0
+                    });
+                })
+            ;
+
+            // —————————————————————————————————————————————————————————————————————————————————————————————————————————
+            // UPDATE: updates existing elements
+            // —————————————————————————————————————————————————————————————————————————————————————————————————————————
+            slice
+                .transition()
+                .duration(transitionDuration)
+                .ease(transitionEasing)
+                .attrTween('d', arcTween)
+            ;
+
+            // —————————————————————————————————————————————————————————————————————————————————————————————————————————
+            // EXIT: removes stale elements
+            // —————————————————————————————————————————————————————————————————————————————————————————————————————————
+            slice.exit()
+                .attr('class', 'nivo_exit')
+                .datum((d, i) => {
+                    return findNeighbor(i, identity, newData, previousData) || d;
+                })
+                .transition()
+                .duration(transitionDuration)
+                .ease(transitionEasing)
+                .attrTween('d', arcTween)
+                .remove()
+            ;
+
+            const pieContext = {
+                element,
+                pie, arc, radius,
+                identity, previousData, newData,
+                transitionDuration, transitionEasing
+            };
+
+            decorators.forEach(legend => {
+                legend(pieContext);
+            });
+
+            previousData = newData;
+        },
+
+        decorate(newDecorators = []) {
+            decorators = newDecorators;
+        }
+    };
+};
+
+
+export default PieD3Svg;

src/lib/decoratorsFromReactChildren.js

@@ -0,0 +1,19 @@
+import React from 'react';
+
+
+const decoratorsFromReactChildren = (children, type) => {
+    const decorators = [];
+
+    React.Children.forEach(children, element => {
+        if (React.isValidElement(element)) {
+            if (element.type[type]) {
+                decorators.push(element.type[type](element));
+            }
+        }
+    });
+
+    return decorators;
+};
+
+
+export default decoratorsFromReactChildren;