1 |
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2 | var Marquee = function Marquee(container, params) {
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3 | |
4 |
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5 |
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6 | var defaults = {
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7 | start: 0,
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8 | end: 300,
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9 | step: 50,
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10 | duration: 300,
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11 | delay: 2000,
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12 | direction: 'top',
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13 | loop: false,
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14 | duplicateClass: 'duplicate'
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15 | |
16 |
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17 |
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18 |
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19 |
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20 | };
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21 | params = params || {};
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22 | for (var def in defaults) {
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23 | if (params[def] === undefined) {
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24 | params[def] = defaults[def];
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25 | }
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26 | }
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27 | var s = this;
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28 | s.params = params;
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29 |
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30 | s.container = typeof container === 'string' ? document.querySelector(container) : container;
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31 |
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32 | s.interval = null;
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33 |
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34 | s.updateLoop = function () {
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35 | var dups = [].slice.call(s.container.querySelectorAll('.' + s.params.duplicateClass));
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36 | dups.forEach(function (item) {
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37 | s.container.removeChild(item);
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38 | });
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39 | if (s.params.loop) {
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40 | var beforeDupContainer = s.container.cloneNode(true);
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41 | var afterDupContainer = s.container.cloneNode(true);
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42 | beforeDupContainer.classList.add(s.params.duplicateClass);
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43 | afterDupContainer.classList.add(s.params.duplicateClass);
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44 | s.container.insertBefore(beforeDupContainer, s.container.firstElementChild);
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45 | s.container.appendChild(afterDupContainer);
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46 | }
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47 | };
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48 |
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49 | s.setStart = function (start) {
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50 | s.params.start = start;
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51 | };
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52 |
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53 | s.setEnd = function (end) {
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54 | s.params.end = end;
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55 | };
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56 | |
57 |
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58 |
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59 |
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60 | s.setDuration = function (duration) {
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61 | s.container.style.webkitTransitionDuration = duration + 'ms';
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62 | };
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63 |
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64 | s.setPosition = function (pos) {
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65 | switch (s.params.direction) {
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66 | case 'top':
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67 | s.container.style.webkitTransform = 'translate(0px, ' + pos + 'px)';
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68 | break;
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69 | default:
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70 | s.container.style.webkitTransform = 'translate(0px, ' + pos + 'px)';
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71 | }
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72 | };
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73 |
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74 | s.start = 0;
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75 | s.end = 0;
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76 | s.move = 0;
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77 | s.update = function () {
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78 | s.start = s.params.start;
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79 | s.end = s.params.end;
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80 | var range = s.params.end - s.params.start;
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81 | if (s.params.loop) {
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82 | s.updateLoop();
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83 | s.start = s.params.end + s.params.step;
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84 | s.end = s.start + range;
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85 | }
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86 | s.setDuration(0);
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87 |
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88 | s.setPosition(-s.start);
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89 |
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90 | setTimeout(function () {
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91 | s.setDuration(s.params.duration);
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92 | }, 10);
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93 |
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94 | s.move = s.start;
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95 |
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96 | if (s.interval) window.clearInterval(s.interval);
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97 | };
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98 | s.update();
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99 |
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100 | s.play = function () {
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101 | if (s.interval) window.clearInterval(s.interval);
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102 | s.interval = window.setInterval(function () {
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103 | s.move += s.params.step;
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104 | if (s.params.loop) {
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105 | if (s.move >= s.end + s.params.step) {
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106 |
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107 | var initPos = s.start - s.params.step;
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108 | s.setDuration(0);
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109 | s.setPosition(-initPos);
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110 |
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111 | s.move = initPos + s.params.step;
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112 | setTimeout(function () {
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113 | s.setDuration(s.params.duration);
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114 | s.setPosition(-s.move);
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115 | }, 10);
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116 | } else {
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117 | s.setPosition(-s.move);
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118 | }
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119 | } else {
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120 | s.setPosition(-s.move);
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121 | if (s.move >= s.end) {
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122 | window.clearInterval(s.interval);
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123 | }
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124 | }
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125 | }, s.params.delay);
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126 | };
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127 | s.pause = function () {
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128 | window.clearInterval(s.interval);
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129 | };
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130 | };
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131 |
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132 | export default Marquee; |
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