HTMLWidgets.widget({
name: "plotly",
type: "output",
initialize: function(el, width, height) {
return {};
},
resize: function(el, width, height, instance) {
if (instance.autosize) {
var width = instance.width || width;
var height = instance.height || height;
Plotly.relayout(el.id, {width: width, height: height});
}
},
renderValue: function(el, x, instance) {
// Plotly.relayout() mutates the plot input object, so make sure to
// keep a reference to the user-supplied width/height *before*
// we call Plotly.plot();
var lay = x.layout || {};
instance.width = lay.width;
instance.height = lay.height;
instance.autosize = lay.autosize || true;
/*
/ 'inform the world' about highlighting options this is so other
/ crosstalk libraries have a chance to respond to special settings
/ such as persistent selection.
/ AFAIK, leaflet is the only library with such intergration
/ https://github.com/rstudio/leaflet/pull/346/files#diff-ad0c2d51ce5fdf8c90c7395b102f4265R154
*/
var ctConfig = crosstalk.var('plotlyCrosstalkOpts').set(x.highlight);
if (typeof(window) !== "undefined") {
// make sure plots don't get created outside the network (for on-prem)
window.PLOTLYENV = window.PLOTLYENV || {};
window.PLOTLYENV.BASE_URL = x.base_url;
// Enable persistent selection when shift key is down
// https://stackoverflow.com/questions/1828613/check-if-a-key-is-down
var persistOnShift = function(e) {
if (!e) window.event;
if (e.shiftKey) {
x.highlight.persistent = true;
x.highlight.persistentShift = true;
} else {
x.highlight.persistent = false;
x.highlight.persistentShift = false;
}
};
// Only relevant if we haven't forced persistent mode at command line
if (!x.highlight.persistent) {
window.onmousemove = persistOnShift;
}
}
var graphDiv = document.getElementById(el.id);
// TODO: move the control panel injection strategy inside here...
HTMLWidgets.addPostRenderHandler(function() {
// lower the z-index of the modebar to prevent it from highjacking hover
// (TODO: do this via CSS?)
// https://github.com/ropensci/plotly/issues/956
// https://www.w3schools.com/jsref/prop_style_zindex.asp
var modebars = document.querySelectorAll(".js-plotly-plot .plotly .modebar");
for (var i = 0; i < modebars.length; i++) {
modebars[i].style.zIndex = 1;
}
});
// inject a "control panel" holding selectize/dynamic color widget(s)
if ((x.selectize || x.highlight.dynamic) && !instance.plotly) {
var flex = document.createElement("div");
flex.class = "plotly-crosstalk-control-panel";
flex.style = "display: flex; flex-wrap: wrap";
// inject the colourpicker HTML container into the flexbox
if (x.highlight.dynamic) {
var pickerDiv = document.createElement("div");
var pickerInput = document.createElement("input");
pickerInput.id = el.id + "-colourpicker";
pickerInput.placeholder = "asdasd";
var pickerLabel = document.createElement("label");
pickerLabel.for = pickerInput.id;
pickerLabel.innerHTML = "Brush color ";
pickerDiv.appendChild(pickerLabel);
pickerDiv.appendChild(pickerInput);
flex.appendChild(pickerDiv);
}
// inject selectize HTML containers (one for every crosstalk group)
if (x.selectize) {
var ids = Object.keys(x.selectize);
for (var i = 0; i < ids.length; i++) {
var container = document.createElement("div");
container.id = ids[i];
container.style = "width: 80%; height: 10%";
container.class = "form-group crosstalk-input-plotly-highlight";
var label = document.createElement("label");
label.for = ids[i];
label.innerHTML = x.selectize[ids[i]].group;
label.class = "control-label";
var selectDiv = document.createElement("div");
var select = document.createElement("select");
select.multiple = true;
selectDiv.appendChild(select);
container.appendChild(label);
container.appendChild(selectDiv);
flex.appendChild(container);
}
}
// finally, insert the flexbox inside the htmlwidget container,
// but before the plotly graph div
graphDiv.parentElement.insertBefore(flex, graphDiv);
if (x.highlight.dynamic) {
var picker = $("#" + pickerInput.id);
var colors = x.highlight.color || [];
// TODO: let users specify options?
var opts = {
value: colors[0],
showColour: "both",
palette: "limited",
allowedCols: colors.join(" "),
width: "20%",
height: "10%"
};
picker.colourpicker({changeDelay: 0});
picker.colourpicker("settings", opts);
picker.colourpicker("value", opts.value);
// inform crosstalk about a change in the current selection colour
var grps = x.highlight.ctGroups || [];
for (var i = 0; i < grps.length; i++) {
crosstalk.group(grps[i]).var('plotlySelectionColour')
.set(picker.colourpicker('value'));
}
picker.on("change", function() {
for (var i = 0; i < grps.length; i++) {
crosstalk.group(grps[i]).var('plotlySelectionColour')
.set(picker.colourpicker('value'));
}
});
}
}
// if no plot exists yet, create one with a particular configuration
if (!instance.plotly) {
var plot = Plotly.newPlot(graphDiv, x);
instance.plotly = true;
} else if (x.layout.transition) {
var plot = Plotly.react(graphDiv, x);
} else {
// this is essentially equivalent to Plotly.newPlot(), but avoids creating
// a new webgl context
// https://github.com/plotly/plotly.js/blob/2b24f9def901831e61282076cf3f835598d56f0e/src/plot_api/plot_api.js#L531-L532
// TODO: restore crosstalk selections?
Plotly.purge(graphDiv);
// TODO: why is this necessary to get crosstalk working?
graphDiv.data = undefined;
graphDiv.layout = undefined;
var plot = Plotly.newPlot(graphDiv, x);
}
// Trigger plotly.js calls defined via `plotlyProxy()`
plot.then(function() {
if (HTMLWidgets.shinyMode) {
Shiny.addCustomMessageHandler("plotly-calls", function(msg) {
var gd = document.getElementById(msg.id);
if (!gd) {
throw new Error("Couldn't find plotly graph with id: " + msg.id);
}
// This isn't an official plotly.js method, but it's the only current way to
// change just the configuration of a plot
// https://community.plot.ly/t/update-config-function/9057
if (msg.method == "reconfig") {
Plotly.react(gd, gd.data, gd.layout, msg.args);
return;
}
if (!Plotly[msg.method]) {
throw new Error("Unknown method " + msg.method);
}
var args = [gd].concat(msg.args);
Plotly[msg.method].apply(null, args);
});
}
// plotly's mapbox API doesn't currently support setting bounding boxes
// https://www.mapbox.com/mapbox-gl-js/example/fitbounds/
// so we do this manually...
// TODO: make sure this triggers on a redraw and relayout as well as on initial draw
var mapboxIDs = graphDiv._fullLayout._subplots.mapbox || [];
for (var i = 0; i < mapboxIDs.length; i++) {
var id = mapboxIDs[i];
var mapOpts = x.layout[id] || {};
var args = mapOpts._fitBounds || {};
if (!args) {
continue;
}
var mapObj = graphDiv._fullLayout[id]._subplot.map;
mapObj.fitBounds(args.bounds, args.options);
}
});
// Attach attributes (e.g., "key", "z") to plotly event data
function eventDataWithKey(eventData) {
if (eventData === undefined || !eventData.hasOwnProperty("points")) {
return null;
}
return eventData.points.map(function(pt) {
var obj = {
curveNumber: pt.curveNumber,
pointNumber: pt.pointNumber,
x: pt.x,
y: pt.y
};
// If 'z' is reported with the event data, then use it!
if (pt.hasOwnProperty("z")) {
obj.z = pt.z;
}
if (pt.hasOwnProperty("customdata")) {
obj.customdata = pt.customdata;
}
/*
TL;DR: (I think) we have to select the graph div (again) to attach keys...
Why? Remember that crosstalk will dynamically add/delete traces
(see traceManager.prototype.updateSelection() below)
For this reason, we can't simply grab keys from x.data (like we did previously)
Moreover, we can't use _fullData, since that doesn't include
unofficial attributes. It's true that click/hover events fire with
pt.data, but drag events don't...
*/
var gd = document.getElementById(el.id);
var trace = gd.data[pt.curveNumber];
if (!trace._isSimpleKey) {
var attrsToAttach = ["key"];
} else {
// simple keys fire the whole key
obj.key = trace.key;
var attrsToAttach = [];
}
for (var i = 0; i < attrsToAttach.length; i++) {
var attr = trace[attrsToAttach[i]];
if (Array.isArray(attr)) {
if (typeof pt.pointNumber === "number") {
obj[attrsToAttach[i]] = attr[pt.pointNumber];
} else if (Array.isArray(pt.pointNumber)) {
obj[attrsToAttach[i]] = attr[pt.pointNumber[0]][pt.pointNumber[1]];
} else if (Array.isArray(pt.pointNumbers)) {
obj[attrsToAttach[i]] = pt.pointNumbers.map(function(idx) { return attr[idx]; });
}
}
}
return obj;
});
}
var legendEventData = function(d) {
// if legendgroup is not relevant just return the trace
var trace = d.data[d.curveNumber];
if (!trace.legendgroup) return trace;
// if legendgroup was specified, return all traces that match the group
var legendgrps = d.data.map(function(trace){ return trace.legendgroup; });
var traces = [];
for (i = 0; i < legendgrps.length; i++) {
if (legendgrps[i] == trace.legendgroup) {
traces.push(d.data[i]);
}
}
return traces;
};
// send user input event data to shiny
if (HTMLWidgets.shinyMode && Shiny.setInputValue) {
// Some events clear other input values
// TODO: always register these?
var eventClearMap = {
plotly_deselect: ["plotly_selected", "plotly_selecting", "plotly_brushed", "plotly_brushing", "plotly_click"],
plotly_unhover: ["plotly_hover"],
plotly_doubleclick: ["plotly_click"]
};
Object.keys(eventClearMap).map(function(evt) {
graphDiv.on(evt, function() {
var inputsToClear = eventClearMap[evt];
inputsToClear.map(function(input) {
Shiny.setInputValue(input + "-" + x.source, null, {priority: "event"});
});
});
});
var eventDataFunctionMap = {
plotly_click: eventDataWithKey,
plotly_sunburstclick: eventDataWithKey,
plotly_hover: eventDataWithKey,
plotly_unhover: eventDataWithKey,
// If 'plotly_selected' has already been fired, and you click
// on the plot afterwards, this event fires `undefined`?!?
// That might be considered a plotly.js bug, but it doesn't make
// sense for this input change to occur if `d` is falsy because,
// even in the empty selection case, `d` is truthy (an object),
// and the 'plotly_deselect' event will reset this input
plotly_selected: function(d) { if (d) { return eventDataWithKey(d); } },
plotly_selecting: function(d) { if (d) { return eventDataWithKey(d); } },
plotly_brushed: function(d) {
if (d) { return d.range ? d.range : d.lassoPoints; }
},
plotly_brushing: function(d) {
if (d) { return d.range ? d.range : d.lassoPoints; }
},
plotly_legendclick: legendEventData,
plotly_legenddoubleclick: legendEventData,
plotly_clickannotation: function(d) { return d.fullAnnotation }
};
var registerShinyValue = function(event) {
var eventDataPreProcessor = eventDataFunctionMap[event] || function(d) { return d ? d : el.id };
// some events are unique to the R package
var plotlyJSevent = (event == "plotly_brushed") ? "plotly_selected" : (event == "plotly_brushing") ? "plotly_selecting" : event;
// register the event
graphDiv.on(plotlyJSevent, function(d) {
Shiny.setInputValue(
event + "-" + x.source,
JSON.stringify(eventDataPreProcessor(d)),
{priority: "event"}
);
});
}
var shinyEvents = x.shinyEvents || [];
shinyEvents.map(registerShinyValue);
}
// Given an array of {curveNumber: x, pointNumber: y} objects,
// return a hash of {
// set1: {value: [key1, key2, ...], _isSimpleKey: false},
// set2: {value: [key3, key4, ...], _isSimpleKey: false}
// }
function pointsToKeys(points) {
var keysBySet = {};
for (var i = 0; i < points.length; i++) {
var trace = graphDiv.data[points[i].curveNumber];
if (!trace.key || !trace.set) {
continue;
}
// set defaults for this keySet
// note that we don't track the nested property (yet) since we always
// emit the union -- http://cpsievert.github.io/talks/20161212b/#21
keysBySet[trace.set] = keysBySet[trace.set] || {
value: [],
_isSimpleKey: trace._isSimpleKey
};
// Use pointNumber by default, but aggregated traces should emit pointNumbers
var ptNum = points[i].pointNumber;
var hasPtNum = typeof ptNum === "number";
var ptNum = hasPtNum ? ptNum : points[i].pointNumbers;
// selecting a point of a "simple" trace means: select the
// entire key attached to this trace, which is useful for,
// say clicking on a fitted line to select corresponding observations
var key = trace._isSimpleKey ? trace.key : Array.isArray(ptNum) ? ptNum.map(function(idx) { return trace.key[idx]; }) : trace.key[ptNum];
// http://stackoverflow.com/questions/10865025/merge-flatten-an-array-of-arrays-in-javascript
var keyFlat = trace._isNestedKey ? [].concat.apply([], key) : key;
// TODO: better to only add new values?
keysBySet[trace.set].value = keysBySet[trace.set].value.concat(keyFlat);
}
return keysBySet;
}
x.highlight.color = x.highlight.color || [];
// make sure highlight color is an array
if (!Array.isArray(x.highlight.color)) {
x.highlight.color = [x.highlight.color];
}
var traceManager = new TraceManager(graphDiv, x.highlight);
// Gather all *unique* sets.
var allSets = [];
for (var curveIdx = 0; curveIdx < x.data.length; curveIdx++) {
var newSet = x.data[curveIdx].set;
if (newSet) {
if (allSets.indexOf(newSet) === -1) {
allSets.push(newSet);
}
}
}
// register event listeners for all sets
for (var i = 0; i < allSets.length; i++) {
var set = allSets[i];
var selection = new crosstalk.SelectionHandle(set);
var filter = new crosstalk.FilterHandle(set);
var filterChange = function(e) {
removeBrush(el);
traceManager.updateFilter(set, e.value);
};
filter.on("change", filterChange);
var selectionChange = function(e) {
// Workaround for 'plotly_selected' now firing previously selected
// points (in addition to new ones) when holding shift key. In our case,
// we just want the new keys
if (x.highlight.on === "plotly_selected" && x.highlight.persistentShift) {
// https://stackoverflow.com/questions/1187518/how-to-get-the-difference-between-two-arrays-in-javascript
Array.prototype.diff = function(a) {
return this.filter(function(i) {return a.indexOf(i) < 0;});
};
e.value = e.value.diff(e.oldValue);
}
// array of "event objects" tracking the selection history
// this is used to avoid adding redundant selections
var selectionHistory = crosstalk.var("plotlySelectionHistory").get() || [];
// Construct an event object "defining" the current event.
var event = {
receiverID: traceManager.gd.id,
plotlySelectionColour: crosstalk.group(set).var("plotlySelectionColour").get()
};
event[set] = e.value;
// TODO: is there a smarter way to check object equality?
if (selectionHistory.length > 0) {
var ev = JSON.stringify(event);
for (var i = 0; i < selectionHistory.length; i++) {
var sel = JSON.stringify(selectionHistory[i]);
if (sel == ev) {
return;
}
}
}
// accumulate history for persistent selection
if (!x.highlight.persistent) {
selectionHistory = [event];
} else {
selectionHistory.push(event);
}
crosstalk.var("plotlySelectionHistory").set(selectionHistory);
// do the actual updating of traces, frames, and the selectize widget
traceManager.updateSelection(set, e.value);
// https://github.com/selectize/selectize.js/blob/master/docs/api.md#methods_items
if (x.selectize) {
if (!x.highlight.persistent || e.value === null) {
selectize.clear(true);
}
selectize.addItems(e.value, true);
selectize.close();
}
}
selection.on("change", selectionChange);
// Set a crosstalk variable selection value, triggering an update
var turnOn = function(e) {
if (e) {
var selectedKeys = pointsToKeys(e.points);
// Keys are group names, values are array of selected keys from group.
for (var set in selectedKeys) {
if (selectedKeys.hasOwnProperty(set)) {
selection.set(selectedKeys[set].value, {sender: el});
}
}
}
};
if (x.highlight.debounce > 0) {
turnOn = debounce(turnOn, x.highlight.debounce);
}
graphDiv.on(x.highlight.on, turnOn);
graphDiv.on(x.highlight.off, function turnOff(e) {
// remove any visual clues
removeBrush(el);
// remove any selection history
crosstalk.var("plotlySelectionHistory").set(null);
// trigger the actual removal of selection traces
selection.set(null, {sender: el});
});
// register a callback for selectize so that there is bi-directional
// communication between the widget and direct manipulation events
if (x.selectize) {
var selectizeID = Object.keys(x.selectize)[i];
var options = x.selectize[selectizeID];
var first = [{value: "", label: "(All)"}];
var opts = $.extend({
options: first.concat(options.items),
searchField: "label",
valueField: "value",
labelField: "label",
maxItems: 50
},
options
);
var select = $("#" + selectizeID).find("select")[0];
var selectize = $(select).selectize(opts)[0].selectize;
// NOTE: this callback is triggered when *directly* altering
// dropdown items
selectize.on("change", function() {
var currentItems = traceManager.groupSelections[set] || [];
if (!x.highlight.persistent) {
removeBrush(el);
for (var i = 0; i < currentItems.length; i++) {
selectize.removeItem(currentItems[i], true);
}
}
var newItems = selectize.items.filter(function(idx) {
return currentItems.indexOf(idx) < 0;
});
if (newItems.length > 0) {
traceManager.updateSelection(set, newItems);
} else {
// Item has been removed...
// TODO: this logic won't work for dynamically changing palette
traceManager.updateSelection(set, null);
traceManager.updateSelection(set, selectize.items);
}
});
}
} // end of selectionChange
} // end of renderValue
}); // end of widget definition
/**
* @param graphDiv The Plotly graph div
* @param highlight An object with options for updating selection(s)
*/
function TraceManager(graphDiv, highlight) {
// The Plotly graph div
this.gd = graphDiv;
// Preserve the original data.
// TODO: try using Lib.extendFlat() as done in
// https://github.com/plotly/plotly.js/pull/1136
this.origData = JSON.parse(JSON.stringify(graphDiv.data));
// avoid doing this over and over
this.origOpacity = [];
for (var i = 0; i < this.origData.length; i++) {
this.origOpacity[i] = this.origData[i].opacity === 0 ? 0 : (this.origData[i].opacity || 1);
}
// key: group name, value: null or array of keys representing the
// most recently received selection for that group.
this.groupSelections = {};
// selection parameters (e.g., transient versus persistent selection)
this.highlight = highlight;
}
TraceManager.prototype.close = function() {
// TODO: Unhook all event handlers
};
TraceManager.prototype.updateFilter = function(group, keys) {
if (typeof(keys) === "undefined" || keys === null) {
this.gd.data = JSON.parse(JSON.stringify(this.origData));
} else {
var traces = [];
for (var i = 0; i < this.origData.length; i++) {
var trace = this.origData[i];
if (!trace.key || trace.set !== group) {
continue;
}
var matchFunc = getMatchFunc(trace);
var matches = matchFunc(trace.key, keys);
if (matches.length > 0) {
if (!trace._isSimpleKey) {
// subsetArrayAttrs doesn't mutate trace (it makes a modified clone)
trace = subsetArrayAttrs(trace, matches);
}
traces.push(trace);
}
}
this.gd.data = traces;
}
Plotly.redraw(this.gd);
// NOTE: we purposely do _not_ restore selection(s), since on filter,
// axis likely will update, changing the pixel -> data mapping, leading
// to a likely mismatch in the brush outline and highlighted marks
};
TraceManager.prototype.updateSelection = function(group, keys) {
if (keys !== null && !Array.isArray(keys)) {
throw new Error("Invalid keys argument; null or array expected");
}
// if selection has been cleared, or if this is transient
// selection, delete the "selection traces"
var nNewTraces = this.gd.data.length - this.origData.length;
if (keys === null || !this.highlight.persistent && nNewTraces > 0) {
var tracesToRemove = [];
for (var i = 0; i < this.gd.data.length; i++) {
if (this.gd.data[i]._isCrosstalkTrace) tracesToRemove.push(i);
}
Plotly.deleteTraces(this.gd, tracesToRemove);
this.groupSelections[group] = keys;
} else {
// add to the groupSelection, rather than overwriting it
// TODO: can this be removed?
this.groupSelections[group] = this.groupSelections[group] || [];
for (var i = 0; i < keys.length; i++) {
var k = keys[i];
if (this.groupSelections[group].indexOf(k) < 0) {
this.groupSelections[group].push(k);
}
}
}
if (keys === null) {
Plotly.restyle(this.gd, {"opacity": this.origOpacity});
} else if (keys.length >= 1) {
// placeholder for new "selection traces"
var traces = [];
// this variable is set in R/highlight.R
var selectionColour = crosstalk.group(group).var("plotlySelectionColour").get() ||
this.highlight.color[0];
for (var i = 0; i < this.origData.length; i++) {
// TODO: try using Lib.extendFlat() as done in
// https://github.com/plotly/plotly.js/pull/1136
var trace = JSON.parse(JSON.stringify(this.gd.data[i]));
if (!trace.key || trace.set !== group) {
continue;
}
// Get sorted array of matching indices in trace.key
var matchFunc = getMatchFunc(trace);
var matches = matchFunc(trace.key, keys);
if (matches.length > 0) {
// If this is a "simple" key, that means select the entire trace
if (!trace._isSimpleKey) {
trace = subsetArrayAttrs(trace, matches);
}
// reach into the full trace object so we can properly reflect the
// selection attributes in every view
var d = this.gd._fullData[i];
/*
/ Recursively inherit selection attributes from various sources,
/ in order of preference:
/ (1) official plotly.js selected attribute
/ (2) highlight(selected = attrs_selected(...))
*/
// TODO: it would be neat to have a dropdown to dynamically specify these!
$.extend(true, trace, this.highlight.selected);
// if it is defined, override color with the "dynamic brush color""
if (d.marker) {
trace.marker = trace.marker || {};
trace.marker.color = selectionColour || trace.marker.color || d.marker.color;
}
if (d.line) {
trace.line = trace.line || {};
trace.line.color = selectionColour || trace.line.color || d.line.color;
}
if (d.textfont) {
trace.textfont = trace.textfont || {};
trace.textfont.color = selectionColour || trace.textfont.color || d.textfont.color;
}
if (d.fillcolor) {
// TODO: should selectionColour inherit alpha from the existing fillcolor?
trace.fillcolor = selectionColour || trace.fillcolor || d.fillcolor;
}
// attach a sensible name/legendgroup
trace.name = trace.name || keys.join("<br />");
trace.legendgroup = trace.legendgroup || keys.join("<br />");
// keep track of mapping between this new trace and the trace it targets
// (necessary for updating frames to reflect the selection traces)
trace._originalIndex = i;
trace._newIndex = this.gd._fullData.length + traces.length;
trace._isCrosstalkTrace = true;
traces.push(trace);
}
}
if (traces.length > 0) {
Plotly.addTraces(this.gd, traces).then(function(gd) {
// incrementally add selection traces to frames
// (this is heavily inspired by Plotly.Plots.modifyFrames()
// in src/plots/plots.js)
var _hash = gd._transitionData._frameHash;
var _frames = gd._transitionData._frames || [];
for (var i = 0; i < _frames.length; i++) {
// add to _frames[i].traces *if* this frame references selected trace(s)
var newIndices = [];
for (var j = 0; j < traces.length; j++) {
var tr = traces[j];
if (_frames[i].traces.indexOf(tr._originalIndex) > -1) {
newIndices.push(tr._newIndex);
_frames[i].traces.push(tr._newIndex);
}
}
// nothing to do...
if (newIndices.length === 0) {
continue;
}
var ctr = 0;
var nFrameTraces = _frames[i].data.length;
for (var j = 0; j < nFrameTraces; j++) {
var frameTrace = _frames[i].data[j];
if (!frameTrace.key || frameTrace.set !== group) {
continue;
}
var matchFunc = getMatchFunc(frameTrace);
var matches = matchFunc(frameTrace.key, keys);
if (matches.length > 0) {
if (!trace._isSimpleKey) {
frameTrace = subsetArrayAttrs(frameTrace, matches);
}
var d = gd._fullData[newIndices[ctr]];
if (d.marker) {
frameTrace.marker = d.marker;
}
if (d.line) {
frameTrace.line = d.line;
}
if (d.textfont) {
frameTrace.textfont = d.textfont;
}
ctr = ctr + 1;
_frames[i].data.push(frameTrace);
}
}
// update gd._transitionData._frameHash
_hash[_frames[i].name] = _frames[i];
}
});
// dim traces that have a set matching the set of selection sets
var tracesToDim = [],
opacities = [],
sets = Object.keys(this.groupSelections),
n = this.origData.length;
for (var i = 0; i < n; i++) {
var opacity = this.origOpacity[i] || 1;
// have we already dimmed this trace? Or is this even worth doing?
if (opacity !== this.gd._fullData[i].opacity || this.highlight.opacityDim === 1) {
continue;
}
// is this set an element of the set of selection sets?
var matches = findMatches(sets, [this.gd.data[i].set]);
if (matches.length) {
tracesToDim.push(i);
opacities.push(opacity * this.highlight.opacityDim);
}
}
if (tracesToDim.length > 0) {
Plotly.restyle(this.gd, {"opacity": opacities}, tracesToDim);
// turn off the selected/unselected API
Plotly.restyle(this.gd, {"selectedpoints": null});
}
}
}
};
/*
Note: in all of these match functions, we assume needleSet (i.e. the selected keys)
is a 1D (or flat) array. The real difference is the meaning of haystack.
findMatches() does the usual thing you'd expect for
linked brushing on a scatterplot matrix. findSimpleMatches() returns a match iff
haystack is a subset of the needleSet. findNestedMatches() returns
*/
function getMatchFunc(trace) {
return (trace._isNestedKey) ? findNestedMatches :
(trace._isSimpleKey) ? findSimpleMatches : findMatches;
}
// find matches for "flat" keys
function findMatches(haystack, needleSet) {
var matches = [];
haystack.forEach(function(obj, i) {
if (obj === null || needleSet.indexOf(obj) >= 0) {
matches.push(i);
}
});
return matches;
}
// find matches for "simple" keys
function findSimpleMatches(haystack, needleSet) {
var match = haystack.every(function(val) {
return val === null || needleSet.indexOf(val) >= 0;
});
// yes, this doesn't make much sense other than conforming
// to the output type of the other match functions
return (match) ? [0] : []
}
// find matches for a "nested" haystack (2D arrays)
function findNestedMatches(haystack, needleSet) {
var matches = [];
for (var i = 0; i < haystack.length; i++) {
var hay = haystack[i];
var match = hay.every(function(val) {
return val === null || needleSet.indexOf(val) >= 0;
});
if (match) {
matches.push(i);
}
}
return matches;
}
function isPlainObject(obj) {
return (
Object.prototype.toString.call(obj) === '[object Object]' &&
Object.getPrototypeOf(obj) === Object.prototype
);
}
function subsetArrayAttrs(obj, indices) {
var newObj = {};
Object.keys(obj).forEach(function(k) {
var val = obj[k];
if (k.charAt(0) === "_") {
newObj[k] = val;
} else if (k === "transforms" && Array.isArray(val)) {
newObj[k] = val.map(function(transform) {
return subsetArrayAttrs(transform, indices);
});
} else if (k === "colorscale" && Array.isArray(val)) {
newObj[k] = val;
} else if (isPlainObject(val)) {
newObj[k] = subsetArrayAttrs(val, indices);
} else if (Array.isArray(val)) {
newObj[k] = subsetArray(val, indices);
} else {
newObj[k] = val;
}
});
return newObj;
}
function subsetArray(arr, indices) {
var result = [];
for (var i = 0; i < indices.length; i++) {
result.push(arr[indices[i]]);
}
return result;
}
// Convenience function for removing plotly's brush
function removeBrush(el) {
var outlines = el.querySelectorAll(".select-outline");
for (var i = 0; i < outlines.length; i++) {
outlines[i].remove();
}
}
// https://davidwalsh.name/javascript-debounce-function
// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds. If `immediate` is passed, trigger the function on the
// leading edge, instead of the trailing.
function debounce(func, wait, immediate) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
if (!immediate) func.apply(context, args);
};
var callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
};