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1 define( [
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2 "../core",
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3 "../data/var/dataPriv",
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4 "../css/var/isHiddenWithinTree"
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5 ], function( jQuery, dataPriv, isHiddenWithinTree ) {
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6
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7 "use strict";
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8
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9 var defaultDisplayMap = {};
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10
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11 function getDefaultDisplay( elem ) {
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12 var temp,
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13 doc = elem.ownerDocument,
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14 nodeName = elem.nodeName,
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15 display = defaultDisplayMap[ nodeName ];
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16
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17 if ( display ) {
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18 return display;
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19 }
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20
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21 temp = doc.body.appendChild( doc.createElement( nodeName ) );
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22 display = jQuery.css( temp, "display" );
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23
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24 temp.parentNode.removeChild( temp );
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25
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26 if ( display === "none" ) {
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27 display = "block";
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28 }
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29 defaultDisplayMap[ nodeName ] = display;
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30
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31 return display;
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32 }
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33
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34 function showHide( elements, show ) {
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35 var display, elem,
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36 values = [],
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37 index = 0,
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38 length = elements.length;
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39
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40 // Determine new display value for elements that need to change
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41 for ( ; index < length; index++ ) {
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42 elem = elements[ index ];
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43 if ( !elem.style ) {
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44 continue;
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45 }
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46
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47 display = elem.style.display;
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48 if ( show ) {
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49
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50 // Since we force visibility upon cascade-hidden elements, an immediate (and slow)
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51 // check is required in this first loop unless we have a nonempty display value (either
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52 // inline or about-to-be-restored)
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53 if ( display === "none" ) {
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54 values[ index ] = dataPriv.get( elem, "display" ) || null;
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55 if ( !values[ index ] ) {
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56 elem.style.display = "";
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57 }
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58 }
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59 if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
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60 values[ index ] = getDefaultDisplay( elem );
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61 }
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62 } else {
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63 if ( display !== "none" ) {
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64 values[ index ] = "none";
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65
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66 // Remember what we're overwriting
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67 dataPriv.set( elem, "display", display );
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68 }
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69 }
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70 }
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71
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72 // Set the display of the elements in a second loop to avoid constant reflow
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73 for ( index = 0; index < length; index++ ) {
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74 if ( values[ index ] != null ) {
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75 elements[ index ].style.display = values[ index ];
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76 }
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77 }
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78
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79 return elements;
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80 }
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81
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82 jQuery.fn.extend( {
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83 show: function() {
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84 return showHide( this, true );
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85 },
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86 hide: function() {
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87 return showHide( this );
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88 },
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89 toggle: function( state ) {
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90 if ( typeof state === "boolean" ) {
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91 return state ? this.show() : this.hide();
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92 }
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93
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94 return this.each( function() {
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95 if ( isHiddenWithinTree( this ) ) {
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96 jQuery( this ).show();
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97 } else {
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98 jQuery( this ).hide();
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99 }
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100 } );
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101 }
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102 } );
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103
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104 return showHide;
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105 } );
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