596 lines
24 KiB
JavaScript
596 lines
24 KiB
JavaScript
(function ($) {
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// plugin options, default values
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var defaultOptions = {
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tooltip: {
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show: false,
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cssClass: "flotTip",
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content: "%s | X: %x | Y: %y",
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// allowed templates are:
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// %s -> series label,
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// %c -> series color,
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// %lx -> x axis label (requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels),
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// %ly -> y axis label (requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels),
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// %x -> X value,
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// %y -> Y value,
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// %x.2 -> precision of X value,
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// %p -> percent
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// %n -> value (not percent) of pie chart
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xDateFormat: null,
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yDateFormat: null,
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monthNames: null,
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dayNames: null,
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shifts: {
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x: 10,
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y: 20
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},
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defaultTheme: true,
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snap: true,
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lines: false,
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clickTips: false,
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// callbacks
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onHover: function (flotItem, $tooltipEl) {},
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$compat: false
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}
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};
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// dummy default options object for legacy code (<0.8.5) - is deleted later
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defaultOptions.tooltipOpts = defaultOptions.tooltip;
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// object
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var FlotTooltip = function (plot) {
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// variables
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this.tipPosition = {x: 0, y: 0};
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this.init(plot);
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};
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// main plugin function
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FlotTooltip.prototype.init = function (plot) {
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var that = this;
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// detect other flot plugins
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var plotPluginsLength = $.plot.plugins.length;
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this.plotPlugins = [];
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if (plotPluginsLength) {
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for (var p = 0; p < plotPluginsLength; p++) {
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this.plotPlugins.push($.plot.plugins[p].name);
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}
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}
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plot.hooks.bindEvents.push(function (plot, eventHolder) {
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// get plot options
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that.plotOptions = plot.getOptions();
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// for legacy (<0.8.5) implementations
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if (typeof(that.plotOptions.tooltip) === 'boolean') {
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that.plotOptions.tooltipOpts.show = that.plotOptions.tooltip;
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that.plotOptions.tooltip = that.plotOptions.tooltipOpts;
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delete that.plotOptions.tooltipOpts;
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}
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// if not enabled return
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if (that.plotOptions.tooltip.show === false || typeof that.plotOptions.tooltip.show === 'undefined') return;
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// shortcut to access tooltip options
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that.tooltipOptions = that.plotOptions.tooltip;
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if (that.tooltipOptions.$compat) {
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that.wfunc = 'width';
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that.hfunc = 'height';
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} else {
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that.wfunc = 'innerWidth';
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that.hfunc = 'innerHeight';
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}
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// create tooltip DOM element
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var $tip = that.getDomElement();
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// bind event
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$( plot.getPlaceholder() ).bind("plothover", plothover);
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if (that.tooltipOptions.clickTips) {
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$( plot.getPlaceholder() ).bind("plotclick", plotclick);
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}
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that.clickmode = false;
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$(eventHolder).bind('mousemove', mouseMove);
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});
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plot.hooks.shutdown.push(function (plot, eventHolder){
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$(plot.getPlaceholder()).unbind("plothover", plothover);
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$(plot.getPlaceholder()).unbind("plotclick", plotclick);
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plot.removeTooltip();
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$(eventHolder).unbind("mousemove", mouseMove);
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});
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function mouseMove(e){
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var pos = {};
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pos.x = e.pageX;
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pos.y = e.pageY;
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plot.setTooltipPosition(pos);
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}
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/**
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* open the tooltip (if not already open) and freeze it on the current position till the next click
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*/
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function plotclick(event, pos, item) {
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if (! that.clickmode) {
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// it is the click activating the clicktip
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plothover(event, pos, item);
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if (that.getDomElement().is(":visible")) {
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$(plot.getPlaceholder()).unbind("plothover", plothover);
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that.clickmode = true;
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}
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} else {
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// it is the click deactivating the clicktip
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$( plot.getPlaceholder() ).bind("plothover", plothover);
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plot.hideTooltip();
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that.clickmode = false;
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}
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}
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function plothover(event, pos, item) {
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// Simple distance formula.
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var lineDistance = function (p1x, p1y, p2x, p2y) {
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return Math.sqrt((p2x - p1x) * (p2x - p1x) + (p2y - p1y) * (p2y - p1y));
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};
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// Here is some voodoo magic for determining the distance to a line form a given point {x, y}.
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var dotLineLength = function (x, y, x0, y0, x1, y1, o) {
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if (o && !(o =
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function (x, y, x0, y0, x1, y1) {
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if (typeof x0 !== 'undefined') return { x: x0, y: y };
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else if (typeof y0 !== 'undefined') return { x: x, y: y0 };
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var left,
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tg = -1 / ((y1 - y0) / (x1 - x0));
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return {
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x: left = (x1 * (x * tg - y + y0) + x0 * (x * -tg + y - y1)) / (tg * (x1 - x0) + y0 - y1),
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y: tg * left - tg * x + y
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};
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} (x, y, x0, y0, x1, y1),
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o.x >= Math.min(x0, x1) && o.x <= Math.max(x0, x1) && o.y >= Math.min(y0, y1) && o.y <= Math.max(y0, y1))
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) {
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var l1 = lineDistance(x, y, x0, y0), l2 = lineDistance(x, y, x1, y1);
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return l1 > l2 ? l2 : l1;
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} else {
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var a = y0 - y1, b = x1 - x0, c = x0 * y1 - y0 * x1;
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return Math.abs(a * x + b * y + c) / Math.sqrt(a * a + b * b);
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}
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};
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if (item) {
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plot.showTooltip(item, that.tooltipOptions.snap ? item : pos);
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} else if (that.plotOptions.series.lines.show && that.tooltipOptions.lines === true) {
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var maxDistance = that.plotOptions.grid.mouseActiveRadius;
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var closestTrace = {
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distance: maxDistance + 1
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};
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var ttPos = pos;
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$.each(plot.getData(), function (i, series) {
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var xBeforeIndex = 0,
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xAfterIndex = -1;
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// Our search here assumes our data is sorted via the x-axis.
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// TODO: Improve efficiency somehow - search smaller sets of data.
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for (var j = 1; j < series.data.length; j++) {
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if (series.data[j - 1][0] <= pos.x && series.data[j][0] >= pos.x) {
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xBeforeIndex = j - 1;
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xAfterIndex = j;
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}
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}
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if (xAfterIndex === -1) {
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plot.hideTooltip();
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return;
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}
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var pointPrev = { x: series.data[xBeforeIndex][0], y: series.data[xBeforeIndex][1] },
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pointNext = { x: series.data[xAfterIndex][0], y: series.data[xAfterIndex][1] };
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var distToLine = dotLineLength(series.xaxis.p2c(pos.x), series.yaxis.p2c(pos.y), series.xaxis.p2c(pointPrev.x),
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series.yaxis.p2c(pointPrev.y), series.xaxis.p2c(pointNext.x), series.yaxis.p2c(pointNext.y), false);
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if (distToLine < closestTrace.distance) {
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var closestIndex = lineDistance(pointPrev.x, pointPrev.y, pos.x, pos.y) <
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lineDistance(pos.x, pos.y, pointNext.x, pointNext.y) ? xBeforeIndex : xAfterIndex;
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var pointSize = series.datapoints.pointsize;
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// Calculate the point on the line vertically closest to our cursor.
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var pointOnLine = [
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pos.x,
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pointPrev.y + ((pointNext.y - pointPrev.y) * ((pos.x - pointPrev.x) / (pointNext.x - pointPrev.x)))
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];
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var item = {
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datapoint: pointOnLine,
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dataIndex: closestIndex,
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series: series,
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seriesIndex: i
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};
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closestTrace = {
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distance: distToLine,
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item: item
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};
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if (that.tooltipOptions.snap) {
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ttPos = {
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pageX: series.xaxis.p2c(pointOnLine[0]),
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pageY: series.yaxis.p2c(pointOnLine[1])
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};
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}
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}
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});
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if (closestTrace.distance < maxDistance + 1)
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plot.showTooltip(closestTrace.item, ttPos);
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else
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plot.hideTooltip();
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} else {
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plot.hideTooltip();
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}
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}
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// Quick little function for setting the tooltip position.
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plot.setTooltipPosition = function (pos) {
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var $tip = that.getDomElement();
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var totalTipWidth = $tip.outerWidth() + that.tooltipOptions.shifts.x;
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var totalTipHeight = $tip.outerHeight() + that.tooltipOptions.shifts.y;
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if ((pos.x - $(window).scrollLeft()) > ($(window)[that.wfunc]() - totalTipWidth)) {
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pos.x -= totalTipWidth;
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pos.x = Math.max(pos.x, 0);
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}
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if ((pos.y - $(window).scrollTop()) > ($(window)[that.hfunc]() - totalTipHeight)) {
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pos.y -= totalTipHeight;
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}
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/*
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The section applies the new positioning ONLY if pos.x and pos.y
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are numbers. If they are undefined or not a number, use the last
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known numerical position. This hack fixes a bug that kept pie
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charts from keeping their tooltip positioning.
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*/
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if (isNaN(pos.x)) {
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that.tipPosition.x = that.tipPosition.xPrev;
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}
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else {
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that.tipPosition.x = pos.x;
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that.tipPosition.xPrev = pos.x;
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}
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if (isNaN(pos.y)) {
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that.tipPosition.y = that.tipPosition.yPrev;
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}
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else {
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that.tipPosition.y = pos.y;
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that.tipPosition.yPrev = pos.y;
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}
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};
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// Quick little function for showing the tooltip.
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plot.showTooltip = function (target, position, targetPosition) {
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var $tip = that.getDomElement();
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// convert tooltip content template to real tipText
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var tipText = that.stringFormat(that.tooltipOptions.content, target);
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if (tipText === '')
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return;
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$tip.html(tipText);
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plot.setTooltipPosition({ x: that.tipPosition.x, y: that.tipPosition.y });
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$tip.css({
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left: that.tipPosition.x + that.tooltipOptions.shifts.x,
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top: that.tipPosition.y + that.tooltipOptions.shifts.y
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}).show();
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// run callback
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if (typeof that.tooltipOptions.onHover === 'function') {
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that.tooltipOptions.onHover(target, $tip);
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}
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};
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// Quick little function for hiding the tooltip.
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plot.hideTooltip = function () {
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that.getDomElement().hide().html('');
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};
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plot.removeTooltip = function() {
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that.getDomElement().remove();
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};
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};
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/**
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* get or create tooltip DOM element
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* @return jQuery object
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*/
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FlotTooltip.prototype.getDomElement = function () {
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var $tip = $('<div>');
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if (this.tooltipOptions && this.tooltipOptions.cssClass) {
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$tip = $('.' + this.tooltipOptions.cssClass);
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if( $tip.length === 0 ){
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$tip = $('<div />').addClass(this.tooltipOptions.cssClass);
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$tip.appendTo('body').hide().css({position: 'absolute'});
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if(this.tooltipOptions.defaultTheme) {
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$tip.css({
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'background': '#fff',
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'z-index': '1040',
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'padding': '0.4em 0.6em',
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'border-radius': '0.5em',
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'font-size': '0.8em',
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'border': '1px solid #111',
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'display': 'none',
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'white-space': 'nowrap'
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});
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}
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}
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}
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return $tip;
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};
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/**
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* core function, create tooltip content
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* @param {string} content - template with tooltip content
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* @param {object} item - Flot item
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* @return {string} real tooltip content for current item
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*/
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FlotTooltip.prototype.stringFormat = function (content, item) {
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var percentPattern = /%p\.{0,1}(\d{0,})/;
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var seriesPattern = /%s/;
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var colorPattern = /%c/;
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var xLabelPattern = /%lx/; // requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels, will be ignored if plugin isn't loaded
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var yLabelPattern = /%ly/; // requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels, will be ignored if plugin isn't loaded
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var xPattern = /%x\.{0,1}(\d{0,})/;
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var yPattern = /%y\.{0,1}(\d{0,})/;
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var xPatternWithoutPrecision = "%x";
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var yPatternWithoutPrecision = "%y";
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var customTextPattern = "%ct";
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var nPiePattern = "%n";
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var x, y, customText, p, n;
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// for threshold plugin we need to read data from different place
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if (typeof item.series.threshold !== "undefined") {
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x = item.datapoint[0];
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y = item.datapoint[1];
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customText = item.datapoint[2];
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}
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// for CurvedLines plugin we need to read data from different place
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else if (typeof item.series.curvedLines !== "undefined") {
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x = item.datapoint[0];
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y = item.datapoint[1];
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}
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else if (typeof item.series.lines !== "undefined" && item.series.lines.steps) {
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x = item.series.datapoints.points[item.dataIndex * 2];
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y = item.series.datapoints.points[item.dataIndex * 2 + 1];
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// TODO: where to find custom text in this variant?
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customText = "";
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} else {
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x = item.series.data[item.dataIndex][0];
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y = item.series.data[item.dataIndex][1];
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customText = item.series.data[item.dataIndex][2];
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}
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// I think this is only in case of threshold plugin
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if (item.series.label === null && item.series.originSeries) {
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item.series.label = item.series.originSeries.label;
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}
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// if it is a function callback get the content string
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if (typeof(content) === 'function') {
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content = content(item.series.label, x, y, item);
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}
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// the case where the passed content is equal to false
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if (typeof(content) === 'boolean' && !content) {
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return '';
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}
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/* replacement of %ct and other multi-character templates must
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precede the replacement of single-character templates
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to avoid conflict between '%c' and '%ct' and similar substrings
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*/
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if (customText) {
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content = content.replace(customTextPattern, customText);
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}
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// percent match for pie charts and stacked percent
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if (typeof (item.series.percent) !== 'undefined') {
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p = item.series.percent;
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} else if (typeof (item.series.percents) !== 'undefined') {
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p = item.series.percents[item.dataIndex];
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}
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if (typeof p === 'number') {
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content = this.adjustValPrecision(percentPattern, content, p);
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}
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// replace %n with number of items represented by slice in pie charts
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if (item.series.hasOwnProperty('pie')) {
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if (typeof item.series.data[0][1] !== 'undefined') {
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n = item.series.data[0][1];
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}
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}
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if (typeof n === 'number') {
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content = content.replace(nPiePattern, n);
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}
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// series match
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if (typeof(item.series.label) !== 'undefined') {
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content = content.replace(seriesPattern, item.series.label);
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} else {
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//remove %s if label is undefined
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content = content.replace(seriesPattern, "");
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}
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// color match
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if (typeof(item.series.color) !== 'undefined') {
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content = content.replace(colorPattern, item.series.color);
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} else {
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//remove %s if color is undefined
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content = content.replace(colorPattern, "");
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}
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// x axis label match
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if (this.hasAxisLabel('xaxis', item)) {
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content = content.replace(xLabelPattern, item.series.xaxis.options.axisLabel);
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} else {
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//remove %lx if axis label is undefined or axislabels plugin not present
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content = content.replace(xLabelPattern, "");
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}
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// y axis label match
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if (this.hasAxisLabel('yaxis', item)) {
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content = content.replace(yLabelPattern, item.series.yaxis.options.axisLabel);
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} else {
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//remove %ly if axis label is undefined or axislabels plugin not present
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content = content.replace(yLabelPattern, "");
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}
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// time mode axes with custom dateFormat
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if (this.isTimeMode('xaxis', item) && this.isXDateFormat(item)) {
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content = content.replace(xPattern, this.timestampToDate(x, this.tooltipOptions.xDateFormat, item.series.xaxis.options));
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}
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if (this.isTimeMode('yaxis', item) && this.isYDateFormat(item)) {
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content = content.replace(yPattern, this.timestampToDate(y, this.tooltipOptions.yDateFormat, item.series.yaxis.options));
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}
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// set precision if defined
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if (typeof x === 'number') {
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content = this.adjustValPrecision(xPattern, content, x);
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}
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if (typeof y === 'number') {
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content = this.adjustValPrecision(yPattern, content, y);
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}
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// change x from number to given label, if given
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if (typeof item.series.xaxis.ticks !== 'undefined') {
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var ticks;
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if (this.hasRotatedXAxisTicks(item)) {
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// xaxis.ticks will be an empty array if tickRotor is being used, but the values are available in rotatedTicks
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ticks = 'rotatedTicks';
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} else {
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ticks = 'ticks';
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}
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// see https://github.com/krzysu/flot.tooltip/issues/65
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var tickIndex = item.dataIndex + item.seriesIndex;
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for (var xIndex in item.series.xaxis[ticks]) {
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if (item.series.xaxis[ticks].hasOwnProperty(tickIndex) && !this.isTimeMode('xaxis', item)) {
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var valueX = (this.isCategoriesMode('xaxis', item)) ? item.series.xaxis[ticks][tickIndex].label : item.series.xaxis[ticks][tickIndex].v;
|
|
if (valueX === x) {
|
|
content = content.replace(xPattern, item.series.xaxis[ticks][tickIndex].label.replace(/\$/g, '$$$$'));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// change y from number to given label, if given
|
|
if (typeof item.series.yaxis.ticks !== 'undefined') {
|
|
for (var yIndex in item.series.yaxis.ticks) {
|
|
if (item.series.yaxis.ticks.hasOwnProperty(yIndex)) {
|
|
var valueY = (this.isCategoriesMode('yaxis', item)) ? item.series.yaxis.ticks[yIndex].label : item.series.yaxis.ticks[yIndex].v;
|
|
if (valueY === y) {
|
|
content = content.replace(yPattern, item.series.yaxis.ticks[yIndex].label.replace(/\$/g, '$$$$'));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// if no value customization, use tickFormatter by default
|
|
if (typeof item.series.xaxis.tickFormatter !== 'undefined') {
|
|
//escape dollar
|
|
content = content.replace(xPatternWithoutPrecision, item.series.xaxis.tickFormatter(x, item.series.xaxis).replace(/\$/g, '$$'));
|
|
}
|
|
if (typeof item.series.yaxis.tickFormatter !== 'undefined') {
|
|
//escape dollar
|
|
content = content.replace(yPatternWithoutPrecision, item.series.yaxis.tickFormatter(y, item.series.yaxis).replace(/\$/g, '$$'));
|
|
}
|
|
|
|
return content;
|
|
};
|
|
|
|
// helpers just for readability
|
|
FlotTooltip.prototype.isTimeMode = function (axisName, item) {
|
|
return (typeof item.series[axisName].options.mode !== 'undefined' && item.series[axisName].options.mode === 'time');
|
|
};
|
|
|
|
FlotTooltip.prototype.isXDateFormat = function (item) {
|
|
return (typeof this.tooltipOptions.xDateFormat !== 'undefined' && this.tooltipOptions.xDateFormat !== null);
|
|
};
|
|
|
|
FlotTooltip.prototype.isYDateFormat = function (item) {
|
|
return (typeof this.tooltipOptions.yDateFormat !== 'undefined' && this.tooltipOptions.yDateFormat !== null);
|
|
};
|
|
|
|
FlotTooltip.prototype.isCategoriesMode = function (axisName, item) {
|
|
return (typeof item.series[axisName].options.mode !== 'undefined' && item.series[axisName].options.mode === 'categories');
|
|
};
|
|
|
|
//
|
|
FlotTooltip.prototype.timestampToDate = function (tmst, dateFormat, options) {
|
|
var theDate = $.plot.dateGenerator(tmst, options);
|
|
return $.plot.formatDate(theDate, dateFormat, this.tooltipOptions.monthNames, this.tooltipOptions.dayNames);
|
|
};
|
|
|
|
//
|
|
FlotTooltip.prototype.adjustValPrecision = function (pattern, content, value) {
|
|
|
|
var precision;
|
|
var matchResult = content.match(pattern);
|
|
if( matchResult !== null ) {
|
|
if(RegExp.$1 !== '') {
|
|
precision = RegExp.$1;
|
|
value = value.toFixed(precision);
|
|
|
|
// only replace content if precision exists, in other case use thickformater
|
|
content = content.replace(pattern, value);
|
|
}
|
|
}
|
|
return content;
|
|
};
|
|
|
|
// other plugins detection below
|
|
|
|
// check if flot-axislabels plugin (https://github.com/markrcote/flot-axislabels) is used and that an axis label is given
|
|
FlotTooltip.prototype.hasAxisLabel = function (axisName, item) {
|
|
return ($.inArray('axisLabels', this.plotPlugins) !== -1 && typeof item.series[axisName].options.axisLabel !== 'undefined' && item.series[axisName].options.axisLabel.length > 0);
|
|
};
|
|
|
|
// check whether flot-tickRotor, a plugin which allows rotation of X-axis ticks, is being used
|
|
FlotTooltip.prototype.hasRotatedXAxisTicks = function (item) {
|
|
return ($.inArray('tickRotor',this.plotPlugins) !== -1 && typeof item.series.xaxis.rotatedTicks !== 'undefined');
|
|
};
|
|
|
|
//
|
|
var init = function (plot) {
|
|
new FlotTooltip(plot);
|
|
};
|
|
|
|
// define Flot plugin
|
|
$.plot.plugins.push({
|
|
init: init,
|
|
options: defaultOptions,
|
|
name: 'tooltip',
|
|
version: '0.8.5'
|
|
});
|
|
|
|
})(jQuery);
|