1 | /*! |
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2 | * Ext JS Library 3.4.0 |
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3 | * Copyright(c) 2006-2011 Sencha Inc. |
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4 | * licensing@sencha.com |
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5 | * http://www.sencha.com/license |
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6 | */ |
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7 | Ext.ns('Ext.ux'); |
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8 | |
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9 | Ext.ux.Carousel = Ext.extend(Ext.util.Observable, { |
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10 | interval: 3, |
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11 | transitionDuration: 1, |
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12 | transitionType: 'carousel', |
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13 | transitionEasing: 'easeOut', |
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14 | itemSelector: 'img', |
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15 | activeSlide: 0, |
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16 | autoPlay: false, |
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17 | showPlayButton: false, |
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18 | pauseOnNavigate: false, |
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19 | wrap: false, |
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20 | freezeOnHover: false, |
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21 | navigationOnHover: false, |
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22 | hideNavigation: false, |
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23 | width: null, |
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24 | height: null, |
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25 | |
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26 | constructor: function(elId, config) { |
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27 | config = config || {}; |
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28 | Ext.apply(this, config); |
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29 | |
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30 | Ext.ux.Carousel.superclass.constructor.call(this, config); |
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31 | |
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32 | this.addEvents( |
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33 | 'beforeprev', |
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34 | 'prev', |
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35 | 'beforenext', |
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36 | 'next', |
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37 | 'change', |
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38 | 'play', |
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39 | 'pause', |
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40 | 'freeze', |
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41 | 'unfreeze' |
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42 | ); |
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43 | |
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44 | this.el = Ext.get(elId); |
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45 | this.slides = this.els = []; |
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46 | |
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47 | if(this.autoPlay || this.showPlayButton) { |
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48 | this.wrap = true; |
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49 | }; |
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50 | |
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51 | if(this.autoPlay && typeof config.showPlayButton === 'undefined') { |
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52 | this.showPlayButton = true; |
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53 | } |
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54 | |
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55 | this.initMarkup(); |
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56 | this.initEvents(); |
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57 | |
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58 | if(this.carouselSize > 0) { |
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59 | this.refresh(); |
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60 | } |
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61 | }, |
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62 | |
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63 | initMarkup: function() { |
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64 | var dh = Ext.DomHelper; |
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65 | |
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66 | this.carouselSize = 0; |
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67 | var items = this.el.select(this.itemSelector); |
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68 | this.els.container = dh.append(this.el, {cls: 'ux-carousel-container'}, true); |
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69 | this.els.slidesWrap = dh.append(this.els.container, {cls: 'ux-carousel-slides-wrap'}, true); |
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70 | |
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71 | this.els.navigation = dh.append(this.els.container, {cls: 'ux-carousel-nav'}, true).hide(); |
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72 | this.els.caption = dh.append(this.els.navigation, {tag: 'h2', cls: 'ux-carousel-caption'}, true); |
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73 | this.els.navNext = dh.append(this.els.navigation, {tag: 'a', href: '#', cls: 'ux-carousel-nav-next'}, true); |
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74 | if(this.showPlayButton) { |
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75 | this.els.navPlay = dh.append(this.els.navigation, {tag: 'a', href: '#', cls: 'ux-carousel-nav-play'}, true) |
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76 | } |
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77 | this.els.navPrev = dh.append(this.els.navigation, {tag: 'a', href: '#', cls: 'ux-carousel-nav-prev'}, true); |
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78 | |
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79 | // set the dimensions of the container |
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80 | this.slideWidth = this.width || this.el.getWidth(true); |
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81 | this.slideHeight = this.height || this.el.getHeight(true); |
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82 | this.els.container.setStyle({ |
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83 | width: this.slideWidth + 'px', |
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84 | height: this.slideHeight + 'px' |
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85 | }); |
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86 | |
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87 | this.els.caption.setWidth((this.slideWidth - (this.els.navNext.getWidth()*2) - (this.showPlayButton ? this.els.navPlay.getWidth() : 0) - 20) + 'px') |
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88 | |
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89 | items.appendTo(this.els.slidesWrap).each(function(item) { |
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90 | item = item.wrap({cls: 'ux-carousel-slide'}); |
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91 | this.slides.push(item); |
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92 | item.setWidth(this.slideWidth + 'px').setHeight(this.slideHeight + 'px'); |
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93 | }, this); |
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94 | this.carouselSize = this.slides.length; |
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95 | if(this.navigationOnHover) { |
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96 | this.els.navigation.setStyle('top', (-1*this.els.navigation.getHeight()) + 'px'); |
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97 | } |
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98 | this.el.clip(); |
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99 | }, |
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100 | |
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101 | initEvents: function() { |
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102 | this.els.navPrev.on('click', function(ev) { |
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103 | ev.preventDefault(); |
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104 | var target = ev.getTarget(); |
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105 | target.blur(); |
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106 | if(Ext.fly(target).hasClass('ux-carousel-nav-disabled')) return; |
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107 | this.prev(); |
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108 | }, this); |
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109 | |
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110 | this.els.navNext.on('click', function(ev) { |
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111 | ev.preventDefault(); |
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112 | var target = ev.getTarget(); |
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113 | target.blur(); |
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114 | if(Ext.fly(target).hasClass('ux-carousel-nav-disabled')) return; |
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115 | this.next(); |
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116 | }, this); |
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117 | |
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118 | if(this.showPlayButton) { |
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119 | this.els.navPlay.on('click', function(ev){ |
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120 | ev.preventDefault(); |
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121 | ev.getTarget().blur(); |
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122 | if(this.playing) { |
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123 | this.pause(); |
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124 | } |
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125 | else { |
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126 | this.play(); |
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127 | } |
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128 | }, this); |
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129 | }; |
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130 | |
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131 | if(this.freezeOnHover) { |
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132 | this.els.container.on('mouseenter', function(){ |
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133 | if(this.playing) { |
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134 | this.fireEvent('freeze', this.slides[this.activeSlide]); |
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135 | Ext.TaskMgr.stop(this.playTask); |
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136 | } |
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137 | }, this); |
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138 | this.els.container.on('mouseleave', function(){ |
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139 | if(this.playing) { |
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140 | this.fireEvent('unfreeze', this.slides[this.activeSlide]); |
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141 | Ext.TaskMgr.start(this.playTask); |
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142 | } |
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143 | }, this, {buffer: (this.interval/2)*1000}); |
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144 | }; |
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145 | |
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146 | if(this.navigationOnHover) { |
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147 | this.els.container.on('mouseenter', function(){ |
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148 | if(!this.navigationShown) { |
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149 | this.navigationShown = true; |
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150 | this.els.navigation.stopFx(false).shift({ |
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151 | y: this.els.container.getY(), |
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152 | duration: this.transitionDuration |
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153 | }) |
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154 | } |
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155 | }, this); |
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156 | |
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157 | this.els.container.on('mouseleave', function(){ |
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158 | if(this.navigationShown) { |
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159 | this.navigationShown = false; |
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160 | this.els.navigation.stopFx(false).shift({ |
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161 | y: this.els.navigation.getHeight() - this.els.container.getY(), |
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162 | duration: this.transitionDuration |
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163 | }) |
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164 | } |
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165 | }, this); |
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166 | } |
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167 | |
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168 | if(this.interval && this.autoPlay) { |
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169 | this.play(); |
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170 | }; |
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171 | }, |
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172 | |
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173 | prev: function() { |
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174 | if (this.fireEvent('beforeprev') === false) { |
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175 | return; |
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176 | } |
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177 | if(this.pauseOnNavigate) { |
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178 | this.pause(); |
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179 | } |
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180 | this.setSlide(this.activeSlide - 1); |
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181 | |
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182 | this.fireEvent('prev', this.activeSlide); |
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183 | return this; |
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184 | }, |
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185 | |
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186 | next: function() { |
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187 | if(this.fireEvent('beforenext') === false) { |
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188 | return; |
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189 | } |
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190 | if(this.pauseOnNavigate) { |
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191 | this.pause(); |
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192 | } |
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193 | this.setSlide(this.activeSlide + 1); |
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194 | |
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195 | this.fireEvent('next', this.activeSlide); |
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196 | return this; |
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197 | }, |
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198 | |
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199 | play: function() { |
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200 | if(!this.playing) { |
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201 | this.playTask = this.playTask || { |
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202 | run: function() { |
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203 | this.playing = true; |
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204 | this.setSlide(this.activeSlide+1); |
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205 | }, |
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206 | interval: this.interval*1000, |
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207 | scope: this |
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208 | }; |
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209 | |
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210 | this.playTaskBuffer = this.playTaskBuffer || new Ext.util.DelayedTask(function() { |
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211 | Ext.TaskMgr.start(this.playTask); |
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212 | }, this); |
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213 | |
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214 | this.playTaskBuffer.delay(this.interval*1000); |
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215 | this.playing = true; |
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216 | if(this.showPlayButton) { |
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217 | this.els.navPlay.addClass('ux-carousel-playing'); |
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218 | } |
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219 | this.fireEvent('play'); |
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220 | } |
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221 | return this; |
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222 | }, |
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223 | |
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224 | pause: function() { |
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225 | if(this.playing) { |
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226 | Ext.TaskMgr.stop(this.playTask); |
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227 | this.playTaskBuffer.cancel(); |
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228 | this.playing = false; |
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229 | if(this.showPlayButton) { |
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230 | this.els.navPlay.removeClass('ux-carousel-playing'); |
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231 | } |
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232 | this.fireEvent('pause'); |
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233 | } |
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234 | return this; |
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235 | }, |
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236 | |
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237 | clear: function() { |
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238 | this.els.slidesWrap.update(''); |
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239 | this.slides = []; |
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240 | this.carouselSize = 0; |
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241 | this.pause(); |
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242 | return this; |
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243 | }, |
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244 | |
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245 | add: function(el, refresh) { |
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246 | var item = Ext.fly(el).appendTo(this.els.slidesWrap).wrap({cls: 'ux-carousel-slide'}); |
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247 | item.setWidth(this.slideWidth + 'px').setHeight(this.slideHeight + 'px'); |
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248 | this.slides.push(item); |
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249 | if(refresh) { |
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250 | this.refresh(); |
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251 | } |
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252 | return this; |
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253 | }, |
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254 | |
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255 | refresh: function() { |
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256 | this.carouselSize = this.slides.length; |
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257 | this.els.slidesWrap.setWidth((this.slideWidth * this.carouselSize) + 'px'); |
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258 | if(this.carouselSize > 0) { |
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259 | if(!this.hideNavigation) this.els.navigation.show(); |
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260 | this.activeSlide = 0; |
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261 | this.setSlide(0, true); |
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262 | } |
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263 | return this; |
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264 | }, |
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265 | |
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266 | setSlide: function(index, initial) { |
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267 | if(!this.wrap && !this.slides[index]) { |
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268 | return; |
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269 | } |
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270 | else if(this.wrap) { |
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271 | if(index < 0) { |
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272 | index = this.carouselSize-1; |
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273 | } |
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274 | else if(index > this.carouselSize-1) { |
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275 | index = 0; |
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276 | } |
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277 | } |
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278 | if(!this.slides[index]) { |
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279 | return; |
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280 | } |
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281 | |
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282 | this.els.caption.update(this.slides[index].child(':first-child', true).title || ''); |
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283 | var offset = index * this.slideWidth; |
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284 | if (!initial) { |
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285 | switch (this.transitionType) { |
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286 | case 'fade': |
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287 | this.slides[index].setOpacity(0); |
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288 | this.slides[this.activeSlide].stopFx(false).fadeOut({ |
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289 | duration: this.transitionDuration / 2, |
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290 | callback: function(){ |
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291 | this.els.slidesWrap.setStyle('left', (-1 * offset) + 'px'); |
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292 | this.slides[this.activeSlide].setOpacity(1); |
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293 | this.slides[index].fadeIn({ |
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294 | duration: this.transitionDuration / 2 |
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295 | }); |
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296 | }, |
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297 | scope: this |
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298 | }) |
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299 | break; |
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300 | |
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301 | default: |
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302 | var xNew = (-1 * offset) + this.els.container.getX(); |
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303 | this.els.slidesWrap.stopFx(false); |
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304 | this.els.slidesWrap.shift({ |
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305 | duration: this.transitionDuration, |
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306 | x: xNew, |
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307 | easing: this.transitionEasing |
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308 | }); |
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309 | break; |
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310 | } |
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311 | } |
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312 | else { |
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313 | this.els.slidesWrap.setStyle('left', '0'); |
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314 | } |
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315 | |
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316 | this.activeSlide = index; |
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317 | this.updateNav(); |
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318 | this.fireEvent('change', this.slides[index], index); |
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319 | }, |
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320 | |
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321 | updateNav: function() { |
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322 | this.els.navPrev.removeClass('ux-carousel-nav-disabled'); |
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323 | this.els.navNext.removeClass('ux-carousel-nav-disabled'); |
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324 | if(!this.wrap) { |
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325 | if(this.activeSlide === 0) { |
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326 | this.els.navPrev.addClass('ux-carousel-nav-disabled'); |
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327 | } |
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328 | if(this.activeSlide === this.carouselSize-1) { |
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329 | this.els.navNext.addClass('ux-carousel-nav-disabled'); |
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330 | } |
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331 | } |
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332 | } |
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333 | }); |
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