nv.models.historicalBarChart = function() {
"use strict";
//============================================================
// Public Variables with Default Settings
//------------------------------------------------------------
var bars = nv.models.historicalBar()
, xAxis = nv.models.axis()
, yAxis = nv.models.axis()
, legend = nv.models.legend()
;
var margin = {top: 30, right: 90, bottom: 50, left: 90}
, color = nv.utils.defaultColor()
, width = null
, height = null
, showLegend = false
, showXAxis = true
, showYAxis = true
, rightAlignYAxis = false
, tooltips = true
, tooltip = function(key, x, y, e, graph) {
return '<h3>' + key + '</h3>' +
'<p>' + y + ' at ' + x + '</p>'
}
, x
, y
, state = {}
, defaultState = null
, noData = 'No Data Available.'
, dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
, transitionDuration = 250
;
xAxis
.orient('bottom')
.tickPadding(7)
;
yAxis
.orient( (rightAlignYAxis) ? 'right' : 'left')
;
//============================================================
//============================================================
// Private Variables
//------------------------------------------------------------
var showTooltip = function(e, offsetElement) {
// New addition to calculate position if SVG is scaled with viewBox, may move TODO: consider implementing everywhere else
if (offsetElement) {
var svg = d3.select(offsetElement).select('svg');
var viewBox = (svg.node()) ? svg.attr('viewBox') : null;
if (viewBox) {
viewBox = viewBox.split(' ');
var ratio = parseInt(svg.style('width')) / viewBox[2];
e.pos[0] = e.pos[0] * ratio;
e.pos[1] = e.pos[1] * ratio;
}
}
var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
top = e.pos[1] + ( offsetElement.offsetTop || 0),
x = xAxis.tickFormat()(bars.x()(e.point, e.pointIndex)),
y = yAxis.tickFormat()(bars.y()(e.point, e.pointIndex)),
content = tooltip(e.series.key, x, y, e, chart);
nv.tooltip.show([left, top], content, null, null, offsetElement);
};
//============================================================
function chart(selection) {
selection.each(function(data) {
var container = d3.select(this),
that = this;
var availableWidth = (width || parseInt(container.style('width')) || 960)
- margin.left - margin.right,
availableHeight = (height || parseInt(container.style('height')) || 400)
- margin.top - margin.bottom;
chart.update = function() { container.transition().duration(transitionDuration).call(chart) };
chart.container = this;
//set state.disabled
state.disabled = data.map(function(d) { return !!d.disabled });
if (!defaultState) {
var key;
defaultState = {};
for (key in state) {
if (state[key] instanceof Array)
defaultState[key] = state[key].slice(0);
else
defaultState[key] = state[key];
}
}
//------------------------------------------------------------
// Display noData message if there's nothing to show.
if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
var noDataText = container.selectAll('.nv-noData').data([noData]);
noDataText.enter().append('text')
.attr('class', 'nvd3 nv-noData')
.attr('dy', '-.7em')
.style('text-anchor', 'middle');
noDataText
.attr('x', margin.left + availableWidth / 2)
.attr('y', margin.top + availableHeight / 2)
.text(function(d) { return d });
return chart;
} else {
container.selectAll('.nv-noData').remove();
}
//------------------------------------------------------------
//------------------------------------------------------------
// Setup Scales
x = bars.xScale();
y = bars.yScale();
//------------------------------------------------------------
//------------------------------------------------------------
// Setup containers and skeleton of chart
var wrap = container.selectAll('g.nv-wrap.nv-historicalBarChart').data([data]);
var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-historicalBarChart').append('g');
var g = wrap.select('g');
gEnter.append('g').attr('class', 'nv-x nv-axis');
gEnter.append('g').attr('class', 'nv-y nv-axis');
gEnter.append('g').attr('class', 'nv-barsWrap');
gEnter.append('g').attr('class', 'nv-legendWrap');
//------------------------------------------------------------
//------------------------------------------------------------
// Legend
if (showLegend) {
legend.width(availableWidth);
g.select('.nv-legendWrap')
.datum(data)
.call(legend);
if ( margin.top != legend.height()) {
margin.top = legend.height();
availableHeight = (height || parseInt(container.style('height')) || 400)
- margin.top - margin.bottom;
}
wrap.select('.nv-legendWrap')
.attr('transform', 'translate(0,' + (-margin.top) +')')
}
//------------------------------------------------------------
wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
if (rightAlignYAxis) {
g.select(".nv-y.nv-axis")
.attr("transform", "translate(" + availableWidth + ",0)");
}
//------------------------------------------------------------
// Main Chart Component(s)
bars
.width(availableWidth)
.height(availableHeight)
.color(data.map(function(d,i) {
return d.color || color(d, i);
}).filter(function(d,i) { return !data[i].disabled }));
var barsWrap = g.select('.nv-barsWrap')
.datum(data.filter(function(d) { return !d.disabled }))
barsWrap.transition().call(bars);
//------------------------------------------------------------
//------------------------------------------------------------
// Setup Axes
if (showXAxis) {
xAxis
.scale(x)
.tickSize(-availableHeight, 0);
g.select('.nv-x.nv-axis')
.attr('transform', 'translate(0,' + y.range()[0] + ')');
g.select('.nv-x.nv-axis')
.transition()
.call(xAxis);
}
if (showYAxis) {
yAxis
.scale(y)
.ticks( availableHeight / 36 )
.tickSize( -availableWidth, 0);
g.select('.nv-y.nv-axis')
.transition()
.call(yAxis);
}
//------------------------------------------------------------
//============================================================
// Event Handling/Dispatching (in chart's scope)
//------------------------------------------------------------
legend.dispatch.on('legendClick', function(d,i) {
d.disabled = !d.disabled;
if (!data.filter(function(d) { return !d.disabled }).length) {
data.map(function(d) {
d.disabled = false;
wrap.selectAll('.nv-series').classed('disabled', false);
return d;
});
}
state.disabled = data.map(function(d) { return !!d.disabled });
dispatch.stateChange(state);
selection.transition().call(chart);
});
legend.dispatch.on('legendDblclick', function(d) {
//Double clicking should always enable current series, and disabled all others.
data.forEach(function(d) {
d.disabled = true;
});
d.disabled = false;
state.disabled = data.map(function(d) { return !!d.disabled });
dispatch.stateChange(state);
chart.update();
});
dispatch.on('tooltipShow', function(e) {
if (tooltips) showTooltip(e, that.parentNode);
});
dispatch.on('changeState', function(e) {
if (typeof e.disabled !== 'undefined') {
data.forEach(function(series,i) {
series.disabled = e.disabled[i];
});
state.disabled = e.disabled;
}
chart.update();
});
//============================================================
});
return chart;
}
//============================================================
// Event Handling/Dispatching (out of chart's scope)
//------------------------------------------------------------
bars.dispatch.on('elementMouseover.tooltip', function(e) {
e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
dispatch.tooltipShow(e);
});
bars.dispatch.on('elementMouseout.tooltip', function(e) {
dispatch.tooltipHide(e);
});
dispatch.on('tooltipHide', function() {
if (tooltips) nv.tooltip.cleanup();
});
//============================================================
//============================================================
// Expose Public Variables
//------------------------------------------------------------
// expose chart's sub-components
chart.dispatch = dispatch;
chart.bars = bars;
chart.legend = legend;
chart.xAxis = xAxis;
chart.yAxis = yAxis;
d3.rebind(chart, bars, 'defined', 'isArea', 'x', 'y', 'size', 'xScale', 'yScale',
'xDomain', 'yDomain', 'xRange', 'yRange', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id', 'interpolate','highlightPoint','clearHighlights', 'interactive');
chart.options = nv.utils.optionsFunc.bind(chart);
chart.margin = function(_) {
if (!arguments.length) return margin;
margin.top = typeof _.top != 'undefined' ? _.top : margin.top;
margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
return chart;
};
chart.width = function(_) {
if (!arguments.length) return width;
width = _;
return chart;
};
chart.height = function(_) {
if (!arguments.length) return height;
height = _;
return chart;
};
chart.color = function(_) {
if (!arguments.length) return color;
color = nv.utils.getColor(_);
legend.color(color);
return chart;
};
chart.showLegend = function(_) {
if (!arguments.length) return showLegend;
showLegend = _;
return chart;
};
chart.showXAxis = function(_) {
if (!arguments.length) return showXAxis;
showXAxis = _;
return chart;
};
chart.showYAxis = function(_) {
if (!arguments.length) return showYAxis;
showYAxis = _;
return chart;
};
chart.rightAlignYAxis = function(_) {
if(!arguments.length) return rightAlignYAxis;
rightAlignYAxis = _;
yAxis.orient( (_) ? 'right' : 'left');
return chart;
};
chart.tooltips = function(_) {
if (!arguments.length) return tooltips;
tooltips = _;
return chart;
};
chart.tooltipContent = function(_) {
if (!arguments.length) return tooltip;
tooltip = _;
return chart;
};
chart.state = function(_) {
if (!arguments.length) return state;
state = _;
return chart;
};
chart.defaultState = function(_) {
if (!arguments.length) return defaultState;
defaultState = _;
return chart;
};
chart.noData = function(_) {
if (!arguments.length) return noData;
noData = _;
return chart;
};
chart.transitionDuration = function(_) {
if (!arguments.length) return transitionDuration;
transitionDuration = _;
return chart;
};
//============================================================
return chart;
}