Add c3.js and dependencies

app/assets/javascripts/application.js

@@ -16,11 +16,15 @@
 //= require turbolinks
 //= require ckeditor/init
 //= require ahoy
+//= require d3
+//= require c3
+//= require c3ext
 //= require app
 //= require_tree .
 
 var initialize_modules = function() {
   App.Comments.initialize();
+  App.Stats.initialize();
 };
 
 $(function(){

app/assets/stylesheets/application.scss

@@ -1,4 +1,5 @@
 @import "foundation_and_overrides";
 @import "fonts";
 @import "icons";
-@import "debates";
+@import "debates";
+@import "c3";

vendor/assets/javascripts/c3ext.js

@@ -0,0 +1,380 @@
+var c3ext = {};
+c3ext.generate = function (options) {
+
+    if (options.zoom2 != null) {
+        zoom2_reducers = options.zoom2.reducers || {};
+        zoom2_enabled = options.zoom2.enabled;
+        _zoom2_factor = options.zoom2.factor || 1;
+        _zoom2_maxItems = options.zoom2.maxItems;
+    }
+
+    if (!zoom2_enabled) {
+        return c3.generate(options);
+    }
+
+
+    var originalData = Q.copy(options.data);
+    var zoom2_reducers;
+    var zoom2_enabled;
+    var _zoom2_maxItems;
+
+    if (_zoom2_maxItems == null) {
+        var el = d3.select(options.bindto)[0][0];
+        if (el != null) {
+            var availWidth = el.clientWidth;
+
+            var pointSize = 20;
+            _zoom2_maxItems = Math.ceil(availWidth / pointSize);
+        }
+        if (_zoom2_maxItems == null || _zoom2_maxItems < 10) {
+            _zoom2_maxItems = 10;
+        }
+    }
+
+    function onZoomChanged(e) {
+        refresh();
+    }
+
+    var zoom2 = c3ext.ZoomBehavior({ changed: onZoomChanged, bindto: options.bindto });
+
+    zoom2.enhance = function () {
+        _zoom2_maxItems *= 2;
+        var totalItems = zoom2.getZoom().totalItems;
+        if (_zoom2_maxItems > totalItems)
+            _zoom2_maxItems = totalItems;
+        refresh();
+    }
+    zoom2.dehance = function () {
+        _zoom2_maxItems = Math.ceil(_zoom2_maxItems / 2) + 1;
+        refresh();
+    }
+
+    zoom2.maxItems = function () { return _zoom2_maxItems; };
+    function zoomAndReduceData(list, zoomRange, func, maxItems) {
+        //var maxItems = 10;//Math.ceil(10 * zoomFactor);
+        var list2 = list.slice(zoomRange[0], zoomRange[1]);
+        var chunkSize = 1;
+        var list3 = list2;
+        if (list3.length > maxItems) {
+            var chunkSize = Math.ceil(list2.length / maxItems);
+            list3 = list3.splitIntoChunksOf(chunkSize).map(func);
+        }
+        //console.log("x" + getCurrentZoomLevel() + ", maxItems=" + maxItems + " chunkSize=" + chunkSize + " totalBefore=" + list2.length + ", totalAfter=" + list3.length);
+        return list3;
+    }
+
+    function first(t) { return t[0]; }
+
+    var getDataForZoom = function (data) {
+        if (data.columns == null || data.columns.length == 0)
+            return;
+
+        var zoomInfo = zoom2.getZoom();
+        if (zoomInfo.totalItems != data.columns[0].length - 1) {
+            zoom2.setOptions({ totalItems: data.columns[0].length - 1 });
+            zoomInfo = zoom2.getZoom();
+        }
+        data.columns = originalData.columns.map(function (column) {
+            var name = column[0];
+            var reducer = zoom2_reducers[name] || first; //by default take the first
+
+            var values = column.slice(1);
+            var newValues = zoomAndReduceData(values, zoomInfo.currentZoom, reducer, _zoom2_maxItems);
+            return [name].concat(newValues);
+        });
+        return data;
+    };
+
+    getDataForZoom(options.data);
+    var chart = c3.generate(options);
+    var _chart_load_org = chart.load.bind(chart);
+    chart.zoom2 = zoom2;
+    chart.load = function (data) {
+        if (data.unload) {
+            unload(data.unload);
+            delete data.unload;
+        }
+        Q.copy(data, originalData);
+        refresh();
+    }
+    chart.unload = function (names) {
+        unload(names);
+        refresh();
+    }
+
+    function unload(names) {
+        originalData.columns.removeAll(function (t) { names.contains(t); });
+    }
+
+
+    function refresh() {
+        var data = Q.copy(originalData)
+        getDataForZoom(data);
+        _chart_load_org(data);
+    };
+
+
+    return chart;
+}
+
+c3ext.ZoomBehavior = function (options) {
+    var zoom = { __type: "ZoomBehavior" };
+
+    var _zoom2_factor;
+    var _left;
+    var totalItems;
+    var currentZoom;
+    var bindto = options.bindto;
+    var _zoomChanged = options.changed || function () { };
+    var element;
+    var mousewheelTimer;
+    var deltaY = 0;
+    var leftRatio = 0;
+
+
+    zoom.setOptions = function (options) {
+        if (options == null)
+            options = {};
+        _zoom2_factor = options.factor || 1;
+        _left = 0;
+        totalItems = options.totalItems || 0;
+        currentZoom = [0, totalItems];
+        _zoomChanged = options.changed || _zoomChanged;
+    }
+
+    zoom.setOptions(options);
+
+
+    function verifyZoom(newZoom) {
+        //newZoom.sort();
+        if (newZoom[1] > totalItems) {
+            var diff = newZoom[1] - totalItems;
+            newZoom[0] -= diff;
+            newZoom[1] -= diff;
+        }
+        if (newZoom[0] < 0) {
+            var diff = newZoom[0] * -1;
+            newZoom[0] += diff;
+            newZoom[1] += diff;
+        }
+        if (newZoom[1] > totalItems)
+            newZoom[1] = totalItems;
+        if (newZoom[0] < 0)
+            newZoom[0] = 0;
+    }
+
+    function zoomAndPan(zoomFactor, left) {
+        var itemsToShow = Math.ceil(totalItems / zoomFactor);
+        var newZoom = [left, left + itemsToShow];
+        verifyZoom(newZoom);
+        currentZoom = newZoom;
+        onZoomChanged();
+    }
+
+    function onZoomChanged() {
+        if (_zoomChanged != null)
+            _zoomChanged(zoom.getZoom());
+    }
+    function applyZoomAndPan() {
+        zoomAndPan(_zoom2_factor, _left);
+    }
+    function getItemsToShow() {
+        var itemsToShow = Math.ceil(totalItems / _zoom2_factor);
+        return itemsToShow;
+    }
+
+
+    zoom.getZoom = function () {
+        return { totalItems: totalItems, currentZoom: currentZoom.slice() };
+    }
+
+    zoom.factor = function (factor, skipDraw) {
+        if (arguments.length == 0)
+            return _zoom2_factor;
+        _zoom2_factor = factor;
+        if (_zoom2_factor < 1)
+            _zoom2_factor = 1;
+        if (skipDraw)
+            return;
+        applyZoomAndPan();
+    }
+    zoom.left = function (left, skipDraw) {
+        if (arguments.length == 0)
+            return _left;
+        _left = left;
+        if (_left < 0)
+            _left = 0;
+        var pageSize = getItemsToShow();
+        //_left += pageSize;
+        if (_left + pageSize > totalItems)
+            _left = totalItems - pageSize;
+        console.log({ left: _left, pageSize: pageSize });
+        if (skipDraw)
+            return;
+        applyZoomAndPan();
+    }
+
+    zoom.zoomAndPanByRatio = function (zoomRatio, panRatio) {
+
+        var pageSize = getItemsToShow();
+        var leftOffset = Math.round(pageSize * panRatio);
+        var mouseLeft = _left + leftOffset;
+        zoom.factor(zoom.factor() * zoomRatio, true);
+
+        var finalLeft = mouseLeft;
+        if (zoomRatio != 1) {
+            var pageSize2 = getItemsToShow();
+            var leftOffset2 = Math.round(pageSize2 * panRatio);
+            finalLeft = mouseLeft - leftOffset2;
+        }
+        zoom.left(finalLeft, true);
+        applyZoomAndPan();
+    }
+
+    zoom.zoomIn = function () {
+        zoom.zoomAndPanByRatio(2, 0);
+    }
+
+    zoom.zoomOut = function () {
+        zoom.zoomAndPanByRatio(0.5, 0);
+    }
+
+    zoom.panLeft = function () {
+        zoom.zoomAndPanByRatio(1, -1);
+    }
+    zoom.panRight = function () {
+        zoom.zoomAndPanByRatio(1, 1);
+    }
+
+    zoom.reset = function () {
+        _left = 0;
+        _zoom2_factor = 1;
+        applyZoomAndPan();
+    }
+
+    function doZoom() {
+        if (deltaY != 0) {
+            var maxDelta = 10;
+            var multiply = (maxDelta + deltaY) / maxDelta;
+            //var factor = chart.zoom2.factor()*multiply;
+            //factor= Math.ceil(factor*100) / 100;
+            console.log({ deltaY: deltaY, multiply: multiply });
+            zoom.zoomAndPanByRatio(multiply, leftRatio);//0.5);//leftRatio);
+            deltaY = 0;
+        }
+    }
+
+    function element_mousewheel(e) {
+        deltaY += e.deltaY;
+        leftRatio = (e.offsetX - 70) / (e.currentTarget.offsetWidth - 70);
+        //console.log({ "e.offsetX": e.offsetX, "e.currentTarget.offsetWidth": e.currentTarget.offsetWidth, leftRatio: leftRatio });
+        mousewheelTimer.set(150);
+        e.preventDefault();
+    }
+
+    if (bindto != null) {
+        element = $(options.bindto);
+        if (element.mousewheel) {
+            mousewheelTimer = new Timer(doZoom);
+            element.mousewheel(element_mousewheel);
+        }
+    }
+
+    return zoom;
+
+}
+
+if (typeof (Q) == "undefined") {
+    var Q = function () {
+    };
+
+    Q.copy = function (src, target, options, depth) {
+        ///<summary>Copies an object into a target object, recursively cloning any object or array in the way, overwrite=true will overwrite a primitive field value even if exists</summary>
+        ///<param name="src" />
+        ///<param name="target" />
+        ///<param name="options" type="Object">{ overwrite:false }</param>
+        ///<returns type="Object">The copied object</returns>
+        if (depth == null)
+            depth = 0;
+        if (depth == 100) {
+            console.warn("Q.copy is in depth of 100 - possible circular reference")
+        }
+        options = options || { overwrite: false };
+        if (src == target || src == null)
+            return target;
+        if (typeof (src) != "object") {
+            if (options.overwrite || target == null)
+                return src;
+            return target;
+        }
+        if (typeof (src.clone) == "function") {
+            if (options.overwrite || target == null)
+                return src.clone();
+            return target;
+        }
+        if (target == null) {
+            if (src instanceof Array)
+                target = [];
+            else
+                target = {};
+        }
+
+        if (src instanceof Array) {
+            for (var i = 0; i < src.length; i++) {
+                var item = src[i];
+                var item2 = target[i];
+                item2 = Q.copy(item, item2, options, depth + 1);
+                target[i] = item2;
+            }
+            target.splice(src.length, target.length - src.length);
+            return target;
+        }
+        for (var p in src) {
+            var value = src[p];
+            var value2 = target[p];
+            value2 = Q.copy(value, value2, options, depth + 1);
+            target[p] = value2;
+        }
+        return target;
+    }
+}
+if (typeof (Timer) == "undefined") {
+    var Timer = function (action, ms) {
+        this.action = action;
+        if (ms != null)
+            this.set(ms);
+    }
+
+    Timer.prototype.set = function (ms) {
+        if (ms == null)
+            ms = this._ms;
+        else
+            this._ms = ms;
+        this.clear();
+        if (ms == null)
+            return;
+        this.timeout = window.setTimeout(this.onTick.bind(this), ms);
+    }
+
+    Timer.prototype.onTick = function () {
+        this.clear();
+        this.action();
+    }
+
+    Timer.prototype.clear = function (ms) {
+        if (this.timeout == null)
+            return;
+        window.clearTimeout(this.timeout);
+        this.timeout = null;
+    }
+}
+if (typeof(Array.prototype.splitIntoChunksOf)=="undefined") {
+    Array.prototype.splitIntoChunksOf = function (countInEachChunk) {
+        var chunks = Math.ceil(this.length / countInEachChunk);
+        var list = [];
+        for (var i = 0; i < this.length; i += countInEachChunk) {
+            list.push(this.slice(i, i + countInEachChunk));
+        }
+        return list;
+    }
+}

vendor/assets/stylesheets/c3.css

@@ -0,0 +1,163 @@
+/*-- Chart --*/
+.c3 svg {
+  font: 10px sans-serif;
+  -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }
+
+.c3 path, .c3 line {
+  fill: none;
+  stroke: #000; }
+
+.c3 text {
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  user-select: none; }
+
+.c3-legend-item-tile, .c3-xgrid-focus, .c3-ygrid, .c3-event-rect, .c3-bars path {
+  shape-rendering: crispEdges; }
+
+.c3-chart-arc path {
+  stroke: #fff; }
+
+.c3-chart-arc text {
+  fill: #fff;
+  font-size: 13px; }
+
+/*-- Axis --*/
+/*-- Grid --*/
+.c3-grid line {
+  stroke: #aaa; }
+
+.c3-grid text {
+  fill: #aaa; }
+
+.c3-xgrid, .c3-ygrid {
+  stroke-dasharray: 3 3; }
+
+/*-- Text on Chart --*/
+.c3-text.c3-empty {
+  fill: #808080;
+  font-size: 2em; }
+
+/*-- Line --*/
+.c3-line {
+  stroke-width: 1px; }
+
+/*-- Point --*/
+.c3-circle._expanded_ {
+  stroke-width: 1px;
+  stroke: white; }
+
+.c3-selected-circle {
+  fill: white;
+  stroke-width: 2px; }
+
+/*-- Bar --*/
+.c3-bar {
+  stroke-width: 0; }
+
+.c3-bar._expanded_ {
+  fill-opacity: 0.75; }
+
+/*-- Focus --*/
+.c3-target.c3-focused {
+  opacity: 1; }
+
+.c3-target.c3-focused path.c3-line, .c3-target.c3-focused path.c3-step {
+  stroke-width: 2px; }
+
+.c3-target.c3-defocused {
+  opacity: 0.3 !important; }
+
+/*-- Region --*/
+.c3-region {
+  fill: steelblue;
+  fill-opacity: 0.1; }
+
+/*-- Brush --*/
+.c3-brush .extent {
+  fill-opacity: 0.1; }
+
+/*-- Select - Drag --*/
+/*-- Legend --*/
+.c3-legend-item {
+  font-size: 12px; }
+
+.c3-legend-item-hidden {
+  opacity: 0.15; }
+
+.c3-legend-background {
+  opacity: 0.75;
+  fill: white;
+  stroke: lightgray;
+  stroke-width: 1; }
+
+/*-- Title --*/
+.c3-title {
+  font: 14px sans-serif; }
+
+/*-- Tooltip --*/
+.c3-tooltip-container {
+  z-index: 10; }
+
+.c3-tooltip {
+  border-collapse: collapse;
+  border-spacing: 0;
+  background-color: #fff;
+  empty-cells: show;
+  -webkit-box-shadow: 7px 7px 12px -9px #777777;
+  -moz-box-shadow: 7px 7px 12px -9px #777777;
+  box-shadow: 7px 7px 12px -9px #777777;
+  opacity: 0.9; }
+
+.c3-tooltip tr {
+  border: 1px solid #CCC; }
+
+.c3-tooltip th {
+  background-color: #aaa;
+  font-size: 14px;
+  padding: 2px 5px;
+  text-align: left;
+  color: #FFF; }
+
+.c3-tooltip td {
+  font-size: 13px;
+  padding: 3px 6px;
+  background-color: #fff;
+  border-left: 1px dotted #999; }
+
+.c3-tooltip td > span {
+  display: inline-block;
+  width: 10px;
+  height: 10px;
+  margin-right: 6px; }
+
+.c3-tooltip td.value {
+  text-align: right; }
+
+/*-- Area --*/
+.c3-area {
+  stroke-width: 0;
+  opacity: 0.2; }
+
+/*-- Arc --*/
+.c3-chart-arcs-title {
+  dominant-baseline: middle;
+  font-size: 1.3em; }
+
+.c3-chart-arcs .c3-chart-arcs-background {
+  fill: #e0e0e0;
+  stroke: none; }
+
+.c3-chart-arcs .c3-chart-arcs-gauge-unit {
+  fill: #000;
+  font-size: 16px; }
+
+.c3-chart-arcs .c3-chart-arcs-gauge-max {
+  fill: #777; }
+
+.c3-chart-arcs .c3-chart-arcs-gauge-min {
+  fill: #777; }
+
+.c3-chart-arc .c3-gauge-value {
+  fill: #000;
+  /*  font-size: 28px !important;*/ }