/**
* Hydrograph charting module.
*/
const { select } = require('d3-selection');
const { extent } = require('d3-array');
const { line: d3Line } = require('d3-shape');
const { createStructuredSelector } = require('reselect');
const { addSVGAccessibility, addSROnlyTable } = require('../../accessibility');
const { dispatch, link, provide } = require('../../lib/redux');
const { audibleUI } = require('./audible');
const { appendAxes, axesSelector } = require('./axes');
const { cursorSlider } = require('./cursor');
const { MARGIN, CIRCLE_RADIUS, CIRCLE_RADIUS_SINGLE_PT, SPARK_LINE_DIM, layoutSelector } = require('./layout');
const { drawSimpleLegend, legendMarkerRowsSelector } = require('./legend');
const { plotSeriesSelectTable, availableTimeseriesSelector } = require('./parameters');
const { xScaleSelector, yScaleSelector, timeSeriesScalesByParmCdSelector } = require('./scales');
const { Actions } = require('../../store');
const { pointsSelector, pointsTableDataSelector, lineSegmentsByParmCdSelector, currentVariableLineSegmentsSelector,
MASK_DESC, HASH_ID } = require('./drawingData');
const { currentVariableSelector, methodsSelector, isVisibleSelector, titleSelector,
descriptionSelector, currentVariableTimeSeriesSelector, allTimeSeriesSelector } = require('./timeseries');
const { createTooltipFocus, createTooltipText } = require('./tooltip');
const drawMessage = function (elem, message) {
// Set up parent element and SVG
elem.innerHTML = '';
const alertBox = elem
.append('div')
.attr('class', 'usa-alert usa-alert-warning')
.append('div')
.attr('class', 'usa-alert-body');
alertBox
.append('h3')
.attr('class', 'usa-alert-heading')
.html('Hydrograph Alert');
alertBox
.append('p')
.html(message);
};
const plotDataLine = function (elem, {visible, lines, tsKey, xScale, yScale}) {
if (!visible) {
return;
}
for (let line of lines) {
if (line.classes.dataMask === null) {
// If this is a single point line, then represent it as a circle.
// Otherwise, render as a line.
if (line.points.length === 1) {
elem.append('circle')
.data(line.points)
.classed('line-segment', true)
.classed('approved', line.classes.approved)
.classed('estimated', line.classes.estimated)
.attr('r', CIRCLE_RADIUS_SINGLE_PT)
.attr('cx', d => xScale(d.dateTime))
.attr('cy', d => yScale(d.value));
} else {
const tsLine = d3Line()
.x(d => xScale(d.dateTime))
.y(d => yScale(d.value));
elem.append('path')
.datum(line.points)
.classed('line-segment', true)
.classed('approved', line.classes.approved)
.classed('estimated', line.classes.estimated)
.classed(`ts-${tsKey}`, true)
.attr('d', tsLine);
}
} else {
const maskCode = line.classes.dataMask.toLowerCase();
const maskDisplayName = MASK_DESC[maskCode].replace(' ', '-').toLowerCase();
const [xDomainStart, xDomainEnd] = extent(line.points, d => d.dateTime);
const [yRangeStart, yRangeEnd] = yScale.domain();
let maskGroup = elem.append('g')
.attr('class', `${tsKey}-mask-group`);
const xSpan = xScale(xDomainEnd) - xScale(xDomainStart);
const rectWidth = xSpan > 0 ? xSpan : 1;
maskGroup.append('rect')
.attr('x', xScale(xDomainStart))
.attr('y', yScale(yRangeEnd))
.attr('width', rectWidth)
.attr('height', Math.abs(yScale(yRangeEnd)- yScale(yRangeStart)))
.attr('class', `mask ${maskDisplayName}-mask`);
const patternId = HASH_ID[tsKey] ? `url(#${HASH_ID[tsKey]})` : '';
maskGroup.append('rect')
.attr('x', xScale(xDomainStart))
.attr('y', yScale(yRangeEnd))
.attr('width', rectWidth)
.attr('height', Math.abs(yScale(yRangeEnd) - yScale(yRangeStart)))
.attr('fill', patternId);
}
}
};
const plotDataLines = function (elem, {visible, tsLinesMap, tsKey, xScale, yScale}) {
const elemId = `ts-${tsKey}-group`;
elem.selectAll(`#${elemId}`).remove();
const tsLineGroup = elem
.append('g')
.attr('id', elemId)
.classed('tsKey', true);
for (const lines of Object.values(tsLinesMap)) {
plotDataLine(tsLineGroup, {visible, lines, tsKey, xScale, yScale});
}
};
const plotSvgDefs = function(elem) {
let defs = elem.append('defs');
defs.append('mask')
.attr('id', 'display-mask')
.attr('maskUnits', 'userSpaceOnUse')
.append('rect')
.attr('x', '0')
.attr('y', '0')
.attr('width', '100%')
.attr('height', '100%')
.attr('fill', '#0000ff');
defs.append('pattern')
.attr('id', HASH_ID.current)
.attr('width', '8')
.attr('height', '8')
.attr('patternUnits', 'userSpaceOnUse')
.attr('patternTransform', 'rotate(45)')
.append('rect')
.attr('width', '4')
.attr('height', '8')
.attr('transform', 'translate(0, 0)')
.attr('mask', 'url(#display-mask)');
defs.append('pattern')
.attr('id', HASH_ID.compare)
.attr('width', '8')
.attr('height', '8')
.attr('patternUnits', 'userSpaceOnUse')
.attr('patternTransform', 'rotate(135)')
.append('rect')
.attr('width', '4')
.attr('height', '8')
.attr('transform', 'translate(0, 0)')
.attr('mask', 'url(#display-mask)');
};
const timeSeriesLegend = function(elem) {
elem.append('div')
.attr('class', 'hydrograph-container')
.append('svg')
.call(link(drawSimpleLegend, createStructuredSelector({
legendMarkerRows: legendMarkerRowsSelector,
layout: layoutSelector
})));
};
/**
* Plots the median points for a single median time series.
* @param {Object} elem
* @param {Function} xscale
* @param {Function} yscale
* @param {Number} modulo
* @param {Array} points
* @param {Boolean} showLabel
* @param {Object} variable
*/
const plotMedianPoints = function (elem, {xscale, yscale, modulo, points, showLabel, variable}) {
elem.selectAll('medianPoint')
.data(points)
.enter()
.append('circle')
.classed('median-data-series', true)
.classed(`median-modulo-${modulo}`, true)
.attr('r', CIRCLE_RADIUS)
.attr('cx', function(d) {
return xscale(d.dateTime);
})
.attr('cy', function(d) {
return yscale(d.value);
})
.on('click', dispatch(function() {
return Actions.showMedianStatsLabel(!showLabel);
}));
if (showLabel) {
elem.selectAll('medianPointText')
.data(points)
.enter()
.append('text')
.text(function(d) {
return `${d.value} ${variable.unit.unitCode}`;
})
.attr('x', function(d) {
return xscale(d.dateTime) + 5;
})
.attr('y', function(d) {
return yscale(d.value);
});
}
};
/**
* Plots the median points for all median time series for the current variable.
* @param {Object} elem
* @param {Boolean} visible
* @param {Function} xscale
* @param {Function} yscale
* @param {Array} pointsList
* @param {Boolean} showLabel
* @param {Object} variable
*/
const plotAllMedianPoints = function (elem, {visible, xscale, yscale, seriesMap, showLabel, variable}) {
elem.select('#median-points').remove();
if (!visible) {
return;
}
const container = elem
.append('g')
.attr('id', 'median-points');
for (const [index, seriesID] of Object.keys(seriesMap).entries()) {
const points = seriesMap[seriesID].points;
plotMedianPoints(container, {xscale, yscale, modulo: index % 6, points, showLabel, variable});
}
};
const plotSROnlyTable = function (elem, {tsKey, variable, methods, visible, dataByTsID, timeSeries}) {
elem.selectAll(`#sr-only-${tsKey}`).remove();
if (!visible) {
return;
}
const container = elem.append('div')
.attr('id', `sr-only-${tsKey}`)
.classed('usa-sr-only', true);
for (const seriesID of Object.keys(timeSeries)) {
const series = timeSeries[seriesID];
const method = methods[series.method].methodDescription;
let title = variable.variableName;
if (method) {
title += ` (${method})`;
}
if (tsKey === 'median') {
title = `Median ${title}`;
}
addSROnlyTable(container, {
columnNames: [title, 'Time', 'Qualifiers'],
data: dataByTsID[seriesID],
describeById: `${seriesID}-time-series-sr-desc`,
describeByText: `${seriesID} time series data in tabular format`
});
}
};
/**
* Determine if the last year checkbox should be enabled or disabled
*
* @param elem
* @param compareTimeseries
*/
const controlLastYearSelect = function(elem, {compareTimeseries}) {
const comparePoints = compareTimeseries[Object.keys(compareTimeseries)[0]] ? compareTimeseries[Object.keys(compareTimeseries)[0]].points : [];
let checkbox = elem.select('.hydrograph-last-year-input');
if (comparePoints.length > 0) {
checkbox.property('disabled', false);
} else {
checkbox
.property('disabled', true)
.property('checked', false)
.dispatch('change');
}
};
const timeSeriesGraph = function (elem) {
elem.call(link(controlLastYearSelect, createStructuredSelector({
compareTimeseries: currentVariableTimeSeriesSelector('compare')
}))).append('div')
.attr('class', 'hydrograph-container')
.append('svg')
.call(link((elem, layout) => elem.attr('viewBox', `0 0 ${layout.width} ${layout.height}`), layoutSelector))
.call(link(addSVGAccessibility, createStructuredSelector({
titleSelector,
descriptionSelector,
isInteractive: () => true
})))
.call(createTooltipText)
.call(plotSvgDefs)
.append('g')
.attr('transform', `translate(${MARGIN.left},${MARGIN.top})`)
.call(link(appendAxes, axesSelector))
.call(link(plotDataLines, createStructuredSelector({
visible: isVisibleSelector('current'),
tsLinesMap: currentVariableLineSegmentsSelector('current'),
xScale: xScaleSelector('current'),
yScale: yScaleSelector,
tsKey: () => 'current'
})))
.call(link(plotDataLines, createStructuredSelector({
visible: isVisibleSelector('compare'),
tsLinesMap: currentVariableLineSegmentsSelector('compare'),
xScale: xScaleSelector('compare'),
yScale: yScaleSelector,
tsKey: () => 'compare'
})))
.call(link(createTooltipFocus, createStructuredSelector({
xScale: xScaleSelector('current'),
yScale: yScaleSelector,
compareXScale: xScaleSelector('compare'),
currentTsData: pointsSelector('current'),
compareTsData: pointsSelector('compare'),
isCompareVisible: isVisibleSelector('compare')
})))
.call(link(plotAllMedianPoints, createStructuredSelector({
visible: isVisibleSelector('median'),
xscale: xScaleSelector('current'),
yscale: yScaleSelector,
seriesMap: currentVariableTimeSeriesSelector('median'),
variable: currentVariableSelector,
showLabel: (state) => state.showMedianStatsLabel
})));
elem.call(link(plotSeriesSelectTable, createStructuredSelector({
availableTimeseries: availableTimeseriesSelector,
lineSegmentsByParmCd: lineSegmentsByParmCdSelector('current'),
timeSeriesScalesByParmCd: timeSeriesScalesByParmCdSelector('current')(SPARK_LINE_DIM),
layout: layoutSelector
})));
elem.append('div')
.call(link(plotSROnlyTable, createStructuredSelector({
tsKey: () => 'current',
variable: currentVariableSelector,
methods: methodsSelector,
visible: isVisibleSelector('current'),
dataByTsID: pointsTableDataSelector('current'),
timeSeries: currentVariableTimeSeriesSelector('current')
})));
elem.append('div')
.call(link(plotSROnlyTable, createStructuredSelector({
tsKey: () => 'compare',
variable: currentVariableSelector,
methods: methodsSelector,
visible: isVisibleSelector('compare'),
dataByTsID: pointsTableDataSelector('compare'),
timeSeries: currentVariableTimeSeriesSelector('compare')
})));
elem.append('div')
.call(link(plotSROnlyTable, createStructuredSelector({
tsKey: () => 'median',
variable: currentVariableSelector,
methods: methodsSelector,
visible: isVisibleSelector('median'),
dataByTsID: pointsTableDataSelector('median'),
timeSeries: currentVariableTimeSeriesSelector('median')
})));
};
const attachToNode = function (store, node, {siteno} = {}) {
if (!siteno) {
select(node).call(drawMessage, 'No data is available.');
return;
}
store.dispatch(Actions.resizeUI(window.innerWidth, node.offsetWidth));
select(node)
.call(provide(store))
.call(timeSeriesGraph)
.call(cursorSlider)
.call(timeSeriesLegend)
.call(audibleUI)
.select('.hydrograph-last-year-input')
.on('change', dispatch(function () {
return Actions.toggleTimeseries('compare', this.checked);
}));
window.onresize = function() {
store.dispatch(Actions.resizeUI(window.innerWidth, node.offsetWidth));
};
store.dispatch(Actions.retrieveTimeseries(siteno));
};
module.exports = {attachToNode, timeSeriesLegend, timeSeriesGraph};