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1 /* |
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2 YUI 3.10.3 (build 2fb5187) |
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3 Copyright 2013 Yahoo! Inc. All rights reserved. |
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4 Licensed under the BSD License. |
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5 http://yuilibrary.com/license/ |
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6 */ |
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7 |
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8 YUI.add('base-base', function (Y, NAME) { |
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9 |
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10 /** |
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11 * The base module provides the Base class, which objects requiring attribute and custom event support can extend. |
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12 * The module also provides two ways to reuse code - It augments Base with the Plugin.Host interface which provides |
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13 * plugin support and also provides the BaseCore.build method which provides a way to build custom classes using extensions. |
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14 * |
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15 * @module base |
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16 */ |
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17 |
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18 /** |
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19 * The base-base submodule provides the Base class without the Plugin support, provided by Plugin.Host, |
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20 * and without the extension support provided by BaseCore.build. |
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21 * |
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22 * @module base |
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23 * @submodule base-base |
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24 */ |
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25 |
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26 var AttributeCore = Y.AttributeCore, |
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27 AttributeExtras = Y.AttributeExtras, |
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28 BaseCore = Y.BaseCore, |
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29 BaseObservable = Y.BaseObservable; |
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30 |
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31 /** |
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32 * <p> |
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33 * A base class which objects requiring attributes and custom event support can |
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34 * extend. Base also handles the chaining of initializer and destructor methods across |
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35 * the hierarchy as part of object construction and destruction. Additionally, attributes configured |
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36 * through the static <a href="#property_ATTRS">ATTRS</a> property for each class |
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37 * in the hierarchy will be initialized by Base. |
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38 * </p> |
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39 * |
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40 * <p> |
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41 * The static <a href="#property_NAME">NAME</a> property of each class extending |
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42 * from Base will be used as the identifier for the class, and is used by Base to prefix |
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43 * all events fired by instances of that class. |
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44 * </p> |
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45 * |
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46 * @class Base |
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47 * @constructor |
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48 * @uses BaseCore |
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49 * @uses BaseObservable |
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50 * @uses AttributeCore |
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51 * @uses AttributeObservable |
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52 * @uses AttributeExtras |
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53 * @uses EventTarget |
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54 * |
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55 * @param {Object} config Object with configuration property name/value pairs. The object can be |
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56 * used to provide default values for the objects published attributes. |
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57 * |
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58 * <p> |
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59 * The config object can also contain the following non-attribute properties, providing a convenient |
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60 * way to configure events listeners and plugins for the instance, as part of the constructor call: |
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61 * </p> |
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62 * |
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63 * <dl> |
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64 * <dt>on</dt> |
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65 * <dd>An event name to listener function map, to register event listeners for the "on" moment of the event. |
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66 * A constructor convenience property for the <a href="Base.html#method_on">on</a> method.</dd> |
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67 * <dt>after</dt> |
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68 * <dd>An event name to listener function map, to register event listeners for the "after" moment of the event. |
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69 * A constructor convenience property for the <a href="Base.html#method_after">after</a> method.</dd> |
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70 * <dt>bubbleTargets</dt> |
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71 * <dd>An object, or array of objects, to register as bubble targets for bubbled events fired by this instance. |
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72 * A constructor convenience property for the <a href="EventTarget.html#method_addTarget">addTarget</a> method.</dd> |
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73 * <dt>plugins</dt> |
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74 * <dd>A plugin, or array of plugins to be plugged into the instance (see PluginHost's plug method for signature details). |
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75 * A constructor convenience property for the <a href="Plugin.Host.html#method_plug">plug</a> method.</dd> |
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76 * </dl> |
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77 */ |
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78 function Base() { |
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79 BaseCore.apply(this, arguments); |
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80 BaseObservable.apply(this, arguments); |
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81 AttributeExtras.apply(this, arguments); |
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82 } |
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83 |
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84 /** |
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85 * The list of properties which can be configured for |
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86 * each attribute (e.g. setter, getter, writeOnce, readOnly etc.) |
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87 * |
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88 * @property _ATTR_CFG |
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89 * @type Array |
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90 * @static |
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91 * @private |
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92 */ |
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93 Base._ATTR_CFG = BaseCore._ATTR_CFG.concat(BaseObservable._ATTR_CFG); |
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94 |
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95 /** |
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96 * The array of non-attribute configuration properties supported by this class. |
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97 * |
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98 * `Base` supports "on", "after", "plugins" and "bubbleTargets" properties, |
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99 * which are not set up as attributes. |
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100 * |
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101 * This property is primarily required so that when |
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102 * <a href="#property__allowAdHocAttrs">`_allowAdHocAttrs`</a> is enabled by |
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103 * a class, non-attribute configurations don't get added as ad-hoc attributes. |
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104 * |
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105 * @property _NON_ATTRS_CFG |
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106 * @type Array |
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107 * @static |
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108 * @private |
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109 */ |
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110 Base._NON_ATTRS_CFG = BaseCore._NON_ATTRS_CFG.concat(BaseObservable._NON_ATTRS_CFG); |
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111 |
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112 /** |
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113 * <p> |
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114 * The string to be used to identify instances of |
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115 * this class, for example in prefixing events. |
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116 * </p> |
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117 * <p> |
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118 * Classes extending Base, should define their own |
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119 * static NAME property, which should be camelCase by |
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120 * convention (e.g. MyClass.NAME = "myClass";). |
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121 * </p> |
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122 * @property NAME |
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123 * @type String |
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124 * @static |
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125 */ |
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126 Base.NAME = 'base'; |
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127 |
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128 /** |
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129 * The default set of attributes which will be available for instances of this class, and |
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130 * their configuration. In addition to the configuration properties listed by |
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131 * Attribute's <a href="Attribute.html#method_addAttr">addAttr</a> method, the attribute |
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132 * can also be configured with a "cloneDefaultValue" property, which defines how the statically |
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133 * defined value field should be protected ("shallow", "deep" and false are supported values). |
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134 * |
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135 * By default if the value is an object literal or an array it will be "shallow" cloned, to |
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136 * protect the default value. |
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137 * |
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138 * @property ATTRS |
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139 * @type Object |
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140 * @static |
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141 */ |
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142 Base.ATTRS = AttributeCore.protectAttrs(BaseCore.ATTRS); |
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143 |
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144 /** |
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145 Provides a way to safely modify a `Y.Base` subclass' static `ATTRS` after |
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146 the class has been defined or created. |
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147 |
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148 Base-based classes cache information about the class hierarchy in order to |
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149 efficiently create instances. This cache includes includes the aggregated |
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150 `ATTRS` configs. If the static `ATTRS` configs need to be modified after the |
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151 class has been defined or create, then use this method which will make sure |
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152 to clear any cached data before making any modifications. |
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153 |
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154 @method modifyAttrs |
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155 @param {Function} [ctor] The constructor function whose `ATTRS` should be |
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156 modified. If a `ctor` function is not specified, then `this` is assumed |
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157 to be the constructor which hosts the `ATTRS`. |
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158 @param {Object} configs The collection of `ATTRS` configs to mix with the |
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159 existing attribute configurations. |
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160 @static |
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161 @since 3.10.0 |
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162 **/ |
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163 Base.modifyAttrs = BaseCore.modifyAttrs; |
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164 |
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165 Y.mix(Base, BaseCore, false, null, 1); |
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166 Y.mix(Base, AttributeExtras, false, null, 1); |
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167 |
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168 // Needs to be `true`, to overwrite methods from `BaseCore`. |
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169 Y.mix(Base, BaseObservable, true, null, 1); |
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170 |
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171 // Fix constructor |
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172 Base.prototype.constructor = Base; |
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173 |
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174 Y.Base = Base; |
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175 |
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176 |
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177 }, '3.10.3', {"requires": ["attribute-base", "base-core", "base-observable"]}); |