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annotate client/src/components/TimeSlider.vue @ 5038:9d26f67dd916 time-sliding

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client: add date picker to the time-slider
author Fadi Abbud <fadi.abbud@intevation.de>
date Thu, 27 Feb 2020 17:55:31 +0100
parents 9d288d9b851b
children aec0923f9c52
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1 <template>
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2 <div
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3 id="slider"
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4 :class="[
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5 'd-flex box ui-element rounded bg-white flex-row',
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6 { expanded: showTimeSlider }
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7 ]"
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8 >
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9 <div class="d-flex m-1">
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10 <input
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11 type="date"
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12 v-model="timeSelection"
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13 min="2020-01-01"
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14 max="2020-03-01"
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15 />
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16 </div>
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17 <div
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18 id="sliderContainer"
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19 class="d-flex sliderContainer"
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20 style="width: 98%;"
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21 ></div>
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22 <div @click="close" class="d-flex box-control mr-0" style="width: 2%;">
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23 <font-awesome-icon icon="times"></font-awesome-icon>
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24 </div>
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25 </div>
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26 </template>
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27 <style lang="sass" scoped>
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28 #slider
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29 position: absolute
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30 bottom: 0
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31 min-width: 100vw;
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32 &.expanded
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33 max-height: 100%;
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34 max-width: 100%;
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35 margin: 0
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36 </style>
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37 <script>
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38 /* This is Free Software under GNU Affero General Public License v >= 3.0
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39 * without warranty, see README.md and license for details.
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40 *
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41 * SPDX-License-Identifier: AGPL-3.0-or-later
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42 * License-Filename: LICENSES/AGPL-3.0.txt
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43 *
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44 * Copyright (C) 2020 by via donau
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45 * – Österreichische Wasserstraßen-Gesellschaft mbH
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46 * Software engineering by Intevation GmbH
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47 *
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48 * Author(s):
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49 * Fadi Abbud <fadiabbud@intevation.de>
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50 */
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51 import { mapState } from "vuex";
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52 import * as d3 from "d3";
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53 let zoom = null;
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54 export default {
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55 name: "timeslider",
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56 data() {
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57 return {
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58 newX: null
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59 };
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60 },
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61 computed: {
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62 ...mapState("application", ["showTimeSlider"]),
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63 timeSelection: {
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64 get() {
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65 const date = this.$store.state.application.selectedTime;
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66 return date.toISOString().split("T")[0];
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67 },
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68 set(value) {
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69 const date = new Date(value);
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70 this.$store.commit("application/setSelectedTime", date);
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71 this.$nextTick(() => {
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72 this.createSlider();
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73 // redraw the time slider and move to right selected time
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74 zoom.translateTo(
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75 d3.select(".line"),
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76 this.newX(d3.isoParse(this.selectedTime.toISOString())),
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77 1
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78 );
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79 });
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80 }
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81 },
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82 selectedTime: {
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83 get() {
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84 return this.$store.state.application.selectedTime;
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85 },
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86 set(value) {
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87 this.$store.commit("application/setSelectedTime", value);
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88 }
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89 }
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90 },
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91 methods: {
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92 close() {
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93 this.$store.commit("application/showTimeSlider", false);
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94 },
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95 createSlider() {
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96 const element = document.getElementById("sliderContainer");
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97 const svgWidth = element ? element.clientWidth : 0,
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98 svgHeight = 40,
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99 marginTop = 20,
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100 marginLeft = 0;
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101
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102 this.newX = this.getScale();
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103 d3.select(".sliderContainer svg").remove();
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104 let svg = d3
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105 .select(".sliderContainer")
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106 .append("svg")
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107 .attr("width", svgWidth)
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108 .attr("height", svgHeight);
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109
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110 // zoom event
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111 zoom = d3
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112 .zoom()
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113 .scaleExtent([0, Infinity])
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114 .translateExtent([[0, 0], [svgWidth, svgHeight]])
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115 .extent([[0, 0], [(svgWidth, svgHeight)]])
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116 .on("zoom", this.zoomed);
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117
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118 svg
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119 .append("g")
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120 .attr("class", "axis--x")
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121 .attr("transform", `translate(${marginLeft}, ${marginTop})`)
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122 .call(
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123 d3.axisBottom(this.newX).ticks(12)
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124 //.tickFormat(dFormat)
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125 );
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126
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127 // create rectanlge on the slider area to capture mouse events
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128 const eventRect = svg
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129 .append("rect")
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130 .attr("id", "zoom")
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131 .attr("class", "zoom")
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132 .attr("width", svgWidth)
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133 .attr("height", svgHeight)
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134 .attr("fill", "white")
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135 .attr("opacity", 0.2)
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136 .on("mouseover", () => {
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137 svg.select(".zoom").attr("cursor", "move");
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138 });
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139 eventRect.call(zoom).on("click", this.onClick);
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140
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141 const toIsoDate = d => {
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142 return d.toISOString();
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143 };
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144
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145 let drag = d3
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146 .drag()
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147 .on("start", () => {
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148 d3.select(".line")
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149 .raise()
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150 .classed("active", true);
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151 })
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152 .on("drag", this.onDrag)
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153 .on("end", () => {
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154 d3.select(".line").classed("active", false);
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155 });
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156
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157 // Create cursor to indicate to the selected time
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158 svg
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159 .append("rect")
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160 .attr("class", "line")
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161 .attr("id", "scrubber")
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162 .attr("x", this.newX(d3.isoParse(toIsoDate(this.selectedTime))))
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163 .attr("y", 0)
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164 .attr("width", 2)
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165 .attr("height", svgHeight)
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166 .attr("stroke", "#17a2b8")
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167 .attr("stroke-width", 2)
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168 .attr("opacity", 0.6)
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169 .on("mouseover", () => {
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170 svg.select(".line").attr("cursor", "e-resize");
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171 })
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172 .call(drag);
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173 },
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174 getScale() {
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175 return d3
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176 .scaleTime()
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177 .range([0, document.getElementById("sliderContainer").clientWidth || 0])
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178 .domain([
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179 d3.isoParse(new Date("2020-01-01")),
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180 d3.isoParse(new Date("2020-03-01"))
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181 ]);
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182 },
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183 zoomed() {
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184 let scale = this.getScale();
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185 this.newX = d3.event.transform.rescaleX(scale);
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186 d3.select(".axis--x").call(
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187 d3.axisBottom(this.newX).ticks(12)
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188 //.tickFormat(dFormat)
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189 );
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190 d3.select(".line").attr("x", this.newX(d3.isoParse(this.selectedTime)));
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191 },
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192 onClick() {
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193 // Extract the click location
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194 let point = d3.mouse(document.getElementById("zoom")),
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195 p = { x: point[0], y: point[1] };
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196 d3.select(".line").attr("x", p.x);
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197 this.selectedTime = d3.isoParse(this.newX.invert(p.x + 2));
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198 },
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199 onDrag() {
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200 this.selectedTime = d3.isoParse(this.newX.invert(d3.event.x + 2));
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201 d3.select(".line").attr("x", d3.event.x);
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202 }
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203 },
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204 mounted() {
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205 setTimeout(this.createSlider, 150);
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206 }
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207 };
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208 </script>