/* Pi-hole: A black hole for Internet advertisements
* (c) 2023 Pi-hole, LLC (https://pi-hole.net)
* Network-wide ad blocking via your own hardware.
*
* This file is copyright under the latest version of the EUPL.
* Please see LICENSE file for your rights under this license. */
/* global querytypeids:false */
// eslint-disable-next-line no-unused-vars
var THEME_COLORS = [
"#f56954",
"#3c8dbc",
"#00a65a",
"#00c0ef",
"#f39c12",
"#0073b7",
"#001f3f",
"#39cccc",
"#3d9970",
"#01ff70",
"#ff851b",
"#f012be",
"#8e24aa",
"#d81b60",
"#222222",
"#d2d6de",
];
// eslint-disable-next-line no-unused-vars
const htmlLegendPlugin = {
id: "htmlLegend",
afterUpdate(chart, args, options) {
const ul = getOrCreateLegendList(chart, options.containerID);
// Remove old legend items
while (ul.firstChild) {
ul.firstChild.remove();
}
// Reuse the built-in legendItems generator
const items = chart.options.plugins.legend.labels.generateLabels(chart);
items.forEach(item => {
const li = document.createElement("li");
li.style.alignItems = "center";
li.style.cursor = "pointer";
li.style.display = "flex";
li.style.flexDirection = "row";
// Color checkbox (toggle visibility)
const boxSpan = document.createElement("span");
boxSpan.title = "Toggle visibility";
boxSpan.style.color = item.fillStyle;
boxSpan.style.display = "inline-block";
boxSpan.style.margin = "0 10px";
boxSpan.innerHTML = item.hidden
? ''
: '';
boxSpan.addEventListener("click", () => {
const { type } = chart.config;
if (type === "pie" || type === "doughnut") {
// Pie and doughnut charts only have a single dataset and visibility is per item
chart.toggleDataVisibility(item.index);
} else {
chart.setDatasetVisibility(item.datasetIndex, !chart.isDatasetVisible(item.datasetIndex));
}
chart.update();
});
const textLink = document.createElement("p");
if (
chart.canvas.id === "queryTypePieChart" ||
chart.canvas.id === "forwardDestinationPieChart"
) {
// Text (link to query log page)
textLink.title = "List " + item.text + " queries";
textLink.addEventListener("click", () => {
if (chart.canvas.id === "queryTypePieChart") {
window.location.href = "queries.lp?querytype=" + querytypeids[item.index];
} else if (chart.canvas.id === "forwardDestinationPieChart") {
window.location.href = "queries.lp?forwarddest=" + encodeURIComponent(item.text);
}
});
}
textLink.style.color = item.fontColor;
textLink.style.margin = 0;
textLink.style.padding = 0;
textLink.style.textDecoration = item.hidden ? "line-through" : "";
textLink.className = "legend-label-text";
textLink.append(item.text);
li.append(boxSpan, textLink);
ul.append(li);
});
},
};
// eslint-disable-next-line no-unused-vars
var customTooltips = function (context) {
var tooltip = context.tooltip;
var tooltipEl = document.getElementById(this._chart.canvas.id + "-customTooltip");
if (!tooltipEl) {
// Create Tooltip Element once per chart
tooltipEl = document.createElement("div");
tooltipEl.id = this._chart.canvas.id + "-customTooltip";
tooltipEl.classList.add("chartjs-tooltip");
tooltipEl.innerHTML = " ";
// avoid browser's font-zoom since we know that 's
// font-size was set to 14px by bootstrap's css
var fontZoom = parseFloat($("body").css("font-size")) / 14;
// set styles and font
tooltipEl.style.padding = tooltip.options.padding + "px " + tooltip.options.padding + "px";
tooltipEl.style.borderRadius = tooltip.options.cornerRadius + "px";
tooltipEl.style.font = tooltip.options.bodyFont.string;
tooltipEl.style.fontFamily = tooltip.options.bodyFont.family;
tooltipEl.style.fontSize = tooltip.options.bodyFont.size / fontZoom + "px";
tooltipEl.style.fontStyle = tooltip.options.bodyFont.style;
// append Tooltip next to canvas-containing box
tooltipEl.ancestor = this._chart.canvas.closest(".box[id]").parentNode;
tooltipEl.ancestor.append(tooltipEl);
}
// Hide if no tooltip
if (tooltip.opacity === 0) {
tooltipEl.style.opacity = 0;
return;
}
// Set caret position
tooltipEl.classList.remove("left", "right", "center", "top", "bottom");
tooltipEl.classList.add(tooltip.xAlign, tooltip.yAlign);
// Set Text
if (tooltip.body) {
var titleLines = tooltip.title || [];
var bodyLines = tooltip.body.map(function (bodyItem) {
return bodyItem.lines;
});
var innerHtml = "";
titleLines.forEach(function (title) {
innerHtml += "| " + title + " |
|---|
";
});
innerHtml += "";
var printed = 0;
var devicePixel = (1 / window.devicePixelRatio).toFixed(1);
bodyLines.forEach(function (body, i) {
var labelColors = tooltip.labelColors[i];
var style = "background-color: " + labelColors.backgroundColor;
style += "; outline: 1px solid " + labelColors.backgroundColor;
style += "; border: " + devicePixel + "px solid #fff";
var span = "";
var num = body[0].split(": ");
// do not display entries with value of 0 (in bar chart),
// but pass through entries with "0.0% (in pie charts)
if (num[1] !== "0") {
innerHtml += "| " + span + body + " |
";
printed++;
}
});
if (printed < 1) {
innerHtml += "| No activity recorded |
";
}
innerHtml += "";
var tableRoot = tooltipEl.querySelector("table");
tableRoot.innerHTML = innerHtml;
}
var canvasPos = this._chart.canvas.getBoundingClientRect();
var boxPos = tooltipEl.ancestor.getBoundingClientRect();
var offsetX = canvasPos.left - boxPos.left;
var offsetY = canvasPos.top - boxPos.top;
var tooltipWidth = tooltipEl.offsetWidth;
var tooltipHeight = tooltipEl.offsetHeight;
var caretX = tooltip.caretX;
var caretY = tooltip.caretY;
var caretPadding = tooltip.options.caretPadding;
var tooltipX, tooltipY, arrowX;
var arrowMinIndent = 2 * tooltip.options.cornerRadius;
var arrowSize = 5;
// Compute X position
if ($(document).width() > 2 * tooltip.width || tooltip.xAlign !== "center") {
// If the viewport is wide enough, let the tooltip follow the caret position
tooltipX = offsetX + caretX;
if (tooltip.yAlign === "top" || tooltip.yAlign === "bottom") {
switch (tooltip.xAlign) {
case "center":
// set a minimal X position to 5px to prevent
// the tooltip to stick out left of the viewport
var minX = 5;
if (2 * tooltipX < tooltipWidth + minX) {
arrowX = tooltipX - minX;
tooltipX = minX;
} else {
tooltipX -= tooltipWidth / 2;
}
break;
case "left":
tooltipX -= arrowMinIndent;
arrowX = arrowMinIndent;
break;
case "right":
tooltipX -= tooltipWidth - arrowMinIndent;
arrowX = tooltipWidth - arrowMinIndent;
break;
default:
break;
}
} else if (tooltip.yAlign === "center") {
switch (tooltip.xAlign) {
case "left":
tooltipX += caretPadding;
break;
case "right":
tooltipX -= tooltipWidth - caretPadding;
break;
case "center":
tooltipX -= tooltipWidth / 2;
break;
default:
break;
}
}
} else {
// compute the tooltip's center inside ancestor element
tooltipX = (tooltipEl.ancestor.offsetWidth - tooltipWidth) / 2;
// move the tooltip if the arrow would stick out to the left
if (offsetX + caretX - arrowMinIndent < tooltipX) {
tooltipX = offsetX + caretX - arrowMinIndent;
}
// move the tooltip if the arrow would stick out to the right
if (offsetX + caretX - tooltipWidth + arrowMinIndent > tooltipX) {
tooltipX = offsetX + caretX - tooltipWidth + arrowMinIndent;
}
arrowX = offsetX + caretX - tooltipX;
}
// Compute Y position
switch (tooltip.yAlign) {
case "top":
tooltipY = offsetY + caretY + arrowSize + caretPadding;
break;
case "center":
tooltipY = offsetY + caretY - tooltipHeight / 2;
if (tooltip.xAlign === "left") {
tooltipX += arrowSize;
} else if (tooltip.xAlign === "right") {
tooltipX -= arrowSize;
}
break;
case "bottom":
tooltipY = offsetY + caretY - tooltipHeight - arrowSize - caretPadding;
break;
default:
break;
}
// Position tooltip and display
tooltipEl.style.top = tooltipY.toFixed(1) + "px";
tooltipEl.style.left = tooltipX.toFixed(1) + "px";
if (arrowX === undefined) {
tooltipEl.querySelector(".arrow").style.left = "";
} else {
// Calculate percentage X value depending on the tooltip's
// width to avoid hanging arrow out on tooltip width changes
var arrowXpercent = ((100 / tooltipWidth) * arrowX).toFixed(1);
tooltipEl.querySelector(".arrow").style.left = arrowXpercent + "%";
}
tooltipEl.style.opacity = 1;
};
// eslint-disable-next-line no-unused-vars
function doughnutTooltip(tooltipLabel) {
var percentageTotalShown = tooltipLabel.chart._metasets[0].total.toFixed(1);
// tooltipLabel.chart._metasets[0].total returns the total percentage of the shown slices
// to compensate rounding errors we round to one decimal
var label = " " + tooltipLabel.label;
var itemPercentage;
// if we only show < 1% percent of all, show each item with two decimals
if (percentageTotalShown < 1) {
itemPercentage = tooltipLabel.parsed.toFixed(2);
} else {
// show with one decimal, but in case the item share is really small it could be rounded to 0.0
// we compensate for this
itemPercentage =
tooltipLabel.parsed.toFixed(1) === "0.0" ? "< 0.1" : tooltipLabel.parsed.toFixed(1);
}
// even if no doughnut slice is hidden, sometimes percentageTotalShown is slightly less then 100
// we therefore use 99.9 to decide if slices are hidden (we only show with 0.1 precision)
if (percentageTotalShown > 99.9) {
// All items shown
return label + ": " + itemPercentage + "%";
} else {
// set percentageTotalShown again without rounding to account
// for cases where the total shown percentage would be <0.1% of all
percentageTotalShown = tooltipLabel.chart._metasets[0].total;
return (
label +
":
• " +
itemPercentage +
"% of all data
• " +
((tooltipLabel.parsed * 100) / percentageTotalShown).toFixed(1) +
"% of shown items"
);
}
}
// chartjs plugin used by the custom doughnut legend
const getOrCreateLegendList = (chart, id) => {
const legendContainer = document.getElementById(id);
let listContainer = legendContainer.querySelector("ul");
if (!listContainer) {
listContainer = document.createElement("ul");
listContainer.style.display = "flex";
listContainer.style.flexDirection = "column";
listContainer.style.margin = 0;
listContainer.style.padding = 0;
legendContainer.append(listContainer);
}
return listContainer;
};