2 nv.models.discreteBarChart = function() {
4 //============================================================
5 // Public Variables with Default Settings
6 //------------------------------------------------------------
8 var discretebar = nv.models.discreteBar()
9 , xAxis = nv.models.axis()
10 , yAxis = nv.models.axis()
13 var margin = {top: 15, right: 10, bottom: 50, left: 60}
16 , color = nv.utils.getColor()
19 , rightAlignYAxis = false
20 , staggerLabels = false
22 , tooltip = function(key, x, y, e, graph) {
23 return '<h3>' + x + '</h3>' +
28 , noData = "No Data Available."
29 , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'beforeUpdate')
30 , transitionDuration = 250
37 .tickFormat(function(d) { return d })
40 .orient((rightAlignYAxis) ? 'right' : 'left')
41 .tickFormat(d3.format(',.1f'))
44 //============================================================
47 //============================================================
49 //------------------------------------------------------------
51 var showTooltip = function(e, offsetElement) {
52 var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
53 top = e.pos[1] + ( offsetElement.offsetTop || 0),
54 x = xAxis.tickFormat()(discretebar.x()(e.point, e.pointIndex)),
55 y = yAxis.tickFormat()(discretebar.y()(e.point, e.pointIndex)),
56 content = tooltip(e.series.key, x, y, e, chart);
58 nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
61 //============================================================
64 function chart(selection) {
65 selection.each(function(data) {
66 var container = d3.select(this),
69 var availableWidth = (width || parseInt(container.style('width')) || 960)
70 - margin.left - margin.right,
71 availableHeight = (height || parseInt(container.style('height')) || 400)
72 - margin.top - margin.bottom;
75 chart.update = function() {
76 dispatch.beforeUpdate();
77 container.transition().duration(transitionDuration).call(chart);
79 chart.container = this;
82 //------------------------------------------------------------
83 // Display No Data message if there's nothing to show.
85 if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
86 var noDataText = container.selectAll('.nv-noData').data([noData]);
88 noDataText.enter().append('text')
89 .attr('class', 'nvd3 nv-noData')
91 .style('text-anchor', 'middle');
94 .attr('x', margin.left + availableWidth / 2)
95 .attr('y', margin.top + availableHeight / 2)
96 .text(function(d) { return d });
100 container.selectAll('.nv-noData').remove();
103 //------------------------------------------------------------
106 //------------------------------------------------------------
109 x = discretebar.xScale();
110 y = discretebar.yScale().clamp(true);
112 //------------------------------------------------------------
115 //------------------------------------------------------------
116 // Setup containers and skeleton of chart
118 var wrap = container.selectAll('g.nv-wrap.nv-discreteBarWithAxes').data([data]);
119 var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-discreteBarWithAxes').append('g');
120 var defsEnter = gEnter.append('defs');
121 var g = wrap.select('g');
123 gEnter.append('g').attr('class', 'nv-x nv-axis');
124 gEnter.append('g').attr('class', 'nv-y nv-axis');
125 gEnter.append('g').attr('class', 'nv-barsWrap');
127 g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
129 if (rightAlignYAxis) {
130 g.select(".nv-y.nv-axis")
131 .attr("transform", "translate(" + availableWidth + ",0)");
134 //------------------------------------------------------------
137 //------------------------------------------------------------
138 // Main Chart Component(s)
141 .width(availableWidth)
142 .height(availableHeight);
145 var barsWrap = g.select('.nv-barsWrap')
146 .datum(data.filter(function(d) { return !d.disabled }))
148 barsWrap.transition().call(discretebar);
150 //------------------------------------------------------------
154 defsEnter.append('clipPath')
155 .attr('id', 'nv-x-label-clip-' + discretebar.id())
158 g.select('#nv-x-label-clip-' + discretebar.id() + ' rect')
159 .attr('width', x.rangeBand() * (staggerLabels ? 2 : 1))
161 .attr('x', -x.rangeBand() / (staggerLabels ? 1 : 2 ));
164 //------------------------------------------------------------
170 .ticks( availableWidth / 100 )
171 .tickSize(-availableHeight, 0);
173 g.select('.nv-x.nv-axis')
174 .attr('transform', 'translate(0,' + (y.range()[0] + ((discretebar.showValues() && y.domain()[0] < 0) ? 16 : 0)) + ')');
175 //d3.transition(g.select('.nv-x.nv-axis'))
176 g.select('.nv-x.nv-axis').transition()
180 var xTicks = g.select('.nv-x.nv-axis').selectAll('g');
185 .attr('transform', function(d,i,j) { return 'translate(0,' + (j % 2 == 0 ? '5' : '17') + ')' })
192 .ticks( availableHeight / 36 )
193 .tickSize( -availableWidth, 0);
195 g.select('.nv-y.nv-axis').transition()
199 //------------------------------------------------------------
202 //============================================================
203 // Event Handling/Dispatching (in chart's scope)
204 //------------------------------------------------------------
206 dispatch.on('tooltipShow', function(e) {
207 if (tooltips) showTooltip(e, that.parentNode);
210 //============================================================
218 //============================================================
219 // Event Handling/Dispatching (out of chart's scope)
220 //------------------------------------------------------------
222 discretebar.dispatch.on('elementMouseover.tooltip', function(e) {
223 e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
224 dispatch.tooltipShow(e);
227 discretebar.dispatch.on('elementMouseout.tooltip', function(e) {
228 dispatch.tooltipHide(e);
231 dispatch.on('tooltipHide', function() {
232 if (tooltips) nv.tooltip.cleanup();
235 //============================================================
238 //============================================================
239 // Expose Public Variables
240 //------------------------------------------------------------
242 // expose chart's sub-components
243 chart.dispatch = dispatch;
244 chart.discretebar = discretebar;
248 d3.rebind(chart, discretebar, 'x', 'y', 'xDomain', 'yDomain', 'xRange', 'yRange', 'forceX', 'forceY', 'id', 'showValues', 'valueFormat');
250 chart.options = nv.utils.optionsFunc.bind(chart);
252 chart.margin = function(_) {
253 if (!arguments.length) return margin;
254 margin.top = typeof _.top != 'undefined' ? _.top : margin.top;
255 margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
256 margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
257 margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
261 chart.width = function(_) {
262 if (!arguments.length) return width;
267 chart.height = function(_) {
268 if (!arguments.length) return height;
273 chart.color = function(_) {
274 if (!arguments.length) return color;
275 color = nv.utils.getColor(_);
276 discretebar.color(color);
280 chart.showXAxis = function(_) {
281 if (!arguments.length) return showXAxis;
286 chart.showYAxis = function(_) {
287 if (!arguments.length) return showYAxis;
292 chart.rightAlignYAxis = function(_) {
293 if(!arguments.length) return rightAlignYAxis;
295 yAxis.orient( (_) ? 'right' : 'left');
299 chart.staggerLabels = function(_) {
300 if (!arguments.length) return staggerLabels;
305 chart.tooltips = function(_) {
306 if (!arguments.length) return tooltips;
311 chart.tooltipContent = function(_) {
312 if (!arguments.length) return tooltip;
317 chart.noData = function(_) {
318 if (!arguments.length) return noData;
323 chart.transitionDuration = function(_) {
324 if (!arguments.length) return transitionDuration;
325 transitionDuration = _;
329 //============================================================