1 | /*! |
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2 | * Ext JS Library 3.0.0 |
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3 | * Copyright(c) 2006-2009 Ext JS, LLC |
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4 | * licensing@extjs.com |
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5 | * http://www.extjs.com/license |
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6 | */ |
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7 | // setup an App namespace |
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8 | // This is done to prevent collisions in the global namespace |
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9 | Ext.ns('App'); |
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10 | |
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11 | /** |
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12 | * App.BookStore |
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13 | * @extends Ext.data.Store |
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14 | * @cfg {String} url This will be a url of a location to load the BookStore |
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15 | * This is a specialized Store which maintains books. |
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16 | * It already knows about Amazon's XML definition and will expose the following |
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17 | * Record defintion: |
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18 | * - Author |
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19 | * - Manufacturer |
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20 | * - ProductGroup |
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21 | * - DetailPageURL |
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22 | */ |
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23 | App.BookStore = function(config) { |
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24 | var config = config || {}; |
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25 | Ext.applyIf(config, { |
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26 | reader: new Ext.data.XmlReader({ |
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27 | // records will have an "Item" tag |
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28 | record: 'Item', |
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29 | id: 'ASIN', |
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30 | totalRecords: '@total' |
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31 | }, [ |
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32 | // set up the fields mapping into the xml doc |
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33 | // The first needs mapping, the others are very basic |
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34 | {name: 'Author', mapping: 'ItemAttributes > Author'}, |
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35 | 'Title', |
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36 | 'Manufacturer', |
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37 | 'ProductGroup', |
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38 | // Detail URL is not part of the column model of the grid |
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39 | 'DetailPageURL' |
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40 | ]) |
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41 | }); |
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42 | // call the superclass's constructor |
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43 | App.BookStore.superclass.constructor.call(this, config); |
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44 | }; |
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45 | Ext.extend(App.BookStore, Ext.data.Store); |
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46 | |
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47 | |
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48 | |
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49 | /** |
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50 | * App.BookGrid |
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51 | * @extends Ext.grid.GridPanel |
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52 | * This is a custom grid which will display book information. It is tied to |
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53 | * a specific record definition by the dataIndex properties. |
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54 | * |
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55 | * It follows a very custom pattern used only when extending Ext.Components |
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56 | * in which you can omit the constructor. |
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57 | * |
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58 | * It also registers the class with the Component Manager with an xtype of |
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59 | * bookgrid. This allows the application to take care of the lazy-instatiation |
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60 | * facilities provided in Ext's Component Model. |
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61 | */ |
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62 | App.BookGrid = Ext.extend(Ext.grid.GridPanel, { |
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63 | // override |
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64 | initComponent : function() { |
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65 | Ext.apply(this, { |
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66 | // Pass in a column model definition |
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67 | // Note that the DetailPageURL was defined in the record definition but is not used |
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68 | // here. That is okay. |
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69 | columns: [ |
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70 | {header: "Author", width: 120, dataIndex: 'Author', sortable: true}, |
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71 | {header: "Title", dataIndex: 'Title', sortable: true}, |
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72 | {header: "Manufacturer", width: 115, dataIndex: 'Manufacturer', sortable: true}, |
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73 | {header: "Product Group", dataIndex: 'ProductGroup', sortable: true} |
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74 | ], |
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75 | sm: new Ext.grid.RowSelectionModel({singleSelect: true}), |
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76 | // Note the use of a storeId, this will register thisStore |
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77 | // with the StoreMgr and allow us to retrieve it very easily. |
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78 | store: new App.BookStore({ |
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79 | storeId: 'gridBookStore', |
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80 | url: 'sheldon.xml' |
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81 | }), |
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82 | // force the grid to fit the space which is available |
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83 | viewConfig: { |
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84 | forceFit: true |
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85 | } |
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86 | }); |
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87 | // finally call the superclasses implementation |
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88 | App.BookGrid.superclass.initComponent.call(this); |
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89 | } |
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90 | }); |
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91 | // This will associate an string representation of a class |
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92 | // (called an xtype) with the Component Manager |
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93 | // It allows you to support lazy instantiation of your components |
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94 | Ext.reg('bookgrid', App.BookGrid); |
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95 | |
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96 | |
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97 | /** |
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98 | * App.BookDetail |
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99 | * @extends Ext.Panel |
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100 | * This is a specialized Panel which is used to show information about |
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101 | * a book. |
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102 | * |
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103 | * This demonstrates adding 2 custom properties (tplMarkup and |
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104 | * startingMarkup) to the class. It also overrides the initComponent |
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105 | * method and adds a new method called updateDetail. |
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106 | * |
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107 | * The class will be registered with an xtype of 'bookdetail' |
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108 | */ |
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109 | App.BookDetail = Ext.extend(Ext.Panel, { |
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110 | // add tplMarkup as a new property |
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111 | tplMarkup: [ |
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112 | 'Title: <a href="{DetailPageURL}" target="_blank">{Title}</a><br/>', |
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113 | 'Author: {Author}<br/>', |
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114 | 'Manufacturer: {Manufacturer}<br/>', |
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115 | 'Product Group: {ProductGroup}<br/>' |
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116 | ], |
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117 | // startingMarup as a new property |
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118 | startingMarkup: 'Please select a book to see additional details', |
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119 | // override initComponent to create and compile the template |
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120 | // apply styles to the body of the panel and initialize |
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121 | // html to startingMarkup |
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122 | initComponent: function() { |
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123 | this.tpl = new Ext.Template(this.tplMarkup); |
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124 | Ext.apply(this, { |
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125 | bodyStyle: { |
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126 | background: '#ffffff', |
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127 | padding: '7px' |
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128 | }, |
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129 | html: this.startingMarkup |
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130 | }); |
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131 | // call the superclass's initComponent implementation |
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132 | App.BookDetail.superclass.initComponent.call(this); |
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133 | }, |
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134 | // add a method which updates the details |
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135 | updateDetail: function(data) { |
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136 | this.tpl.overwrite(this.body, data); |
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137 | } |
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138 | }); |
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139 | // register the App.BookDetail class with an xtype of bookdetail |
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140 | Ext.reg('bookdetail', App.BookDetail); |
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141 | |
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142 | |
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143 | /** |
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144 | * App.BookMasterDetail |
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145 | * @extends Ext.Panel |
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146 | * |
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147 | * This is a specialized panel which is composed of both a bookgrid |
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148 | * and a bookdetail panel. It provides the glue between the two |
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149 | * components to allow them to communicate. You could consider this |
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150 | * the actual application. |
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151 | * |
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152 | */ |
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153 | App.BookMasterDetail = Ext.extend(Ext.Panel, { |
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154 | // override initComponent |
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155 | initComponent: function() { |
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156 | // used applyIf rather than apply so user could |
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157 | // override the defaults |
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158 | Ext.applyIf(this, { |
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159 | frame: true, |
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160 | title: 'Book List', |
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161 | width: 540, |
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162 | height: 400, |
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163 | layout: 'border', |
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164 | items: [{ |
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165 | xtype: 'bookgrid', |
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166 | itemId: 'gridPanel', |
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167 | region: 'north', |
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168 | height: 210, |
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169 | split: true |
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170 | },{ |
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171 | xtype: 'bookdetail', |
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172 | itemId: 'detailPanel', |
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173 | region: 'center' |
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174 | }] |
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175 | }) |
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176 | // call the superclass's initComponent implementation |
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177 | App.BookMasterDetail.superclass.initComponent.call(this); |
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178 | }, |
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179 | // override initEvents |
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180 | initEvents: function() { |
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181 | // call the superclass's initEvents implementation |
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182 | App.BookMasterDetail.superclass.initEvents.call(this); |
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183 | |
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184 | // now add application specific events |
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185 | // notice we use the selectionmodel's rowselect event rather |
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186 | // than a click event from the grid to provide key navigation |
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187 | // as well as mouse navigation |
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188 | var bookGridSm = this.getComponent('gridPanel').getSelectionModel(); |
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189 | bookGridSm.on('rowselect', this.onRowSelect, this); |
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190 | }, |
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191 | // add a method called onRowSelect |
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192 | // This matches the method signature as defined by the 'rowselect' |
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193 | // event defined in Ext.grid.RowSelectionModel |
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194 | onRowSelect: function(sm, rowIdx, r) { |
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195 | // getComponent will retrieve itemId's or id's. Note that itemId's |
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196 | // are scoped locally to this instance of a component to avoid |
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197 | // conflicts with the ComponentMgr |
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198 | var detailPanel = this.getComponent('detailPanel'); |
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199 | detailPanel.updateDetail(r.data); |
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200 | } |
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201 | }); |
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202 | // register an xtype with this class |
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203 | Ext.reg('bookmasterdetail', App.BookMasterDetail); |
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204 | |
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205 | |
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206 | // Finally now that we've defined all of our classes we can instantiate |
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207 | // an instance of the app and renderTo an existing div called 'binding-example' |
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208 | // Note now that classes have encapsulated this behavior we can easily create |
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209 | // an instance of this app to be used in many different contexts, you could |
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210 | // easily place this application in an Ext.Window for example |
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211 | Ext.onReady(function() { |
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212 | // create an instance of the app |
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213 | var bookApp = new App.BookMasterDetail({ |
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214 | renderTo: 'binding-example' |
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215 | }); |
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216 | // We can retrieve a reference to the data store |
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217 | // via the StoreMgr by its storeId |
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218 | Ext.StoreMgr.get('gridBookStore').load(); |
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219 | }); |
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