// setup an App namespace
-// This is done to prevent collisions in the global namespace
-Ext.ns('App');
-
-/**
- * App.BookStore
- * @extends Ext.data.Store
- * @cfg {String} url This will be a url of a location to load the BookStore
- * This is a specialized Store which maintains books.
- * It already knows about Amazon's XML definition and will expose the following
- * Record defintion:
- * - Author
- * - Manufacturer
- * - ProductGroup
- * - DetailPageURL
- */
-App.BookStore = function(config) {
- var config = config || {};
- Ext.applyIf(config, {
- reader: new Ext.data.XmlReader({
- // records will have an "Item" tag
- record: 'Item',
- id: 'ASIN',
- totalRecords: '@total'
- }, [
- // set up the fields mapping into the xml doc
- // The first needs mapping, the others are very basic
- {name: 'Author', mapping: 'ItemAttributes > Author'},
- 'Title',
- 'Manufacturer',
- 'ProductGroup',
- // Detail URL is not part of the column model of the grid
- 'DetailPageURL'
- ])
- });
- // call the superclass's constructor
- App.BookStore.superclass.constructor.call(this, config);
-};
-Ext.extend(App.BookStore, Ext.data.Store);
-
-
-
-/**
- * App.BookGrid
- * @extends Ext.grid.GridPanel
- * This is a custom grid which will display book information. It is tied to
- * a specific record definition by the dataIndex properties.
- *
- * It follows a very custom pattern used only when extending Ext.Components
- * in which you can omit the constructor.
- *
- * It also registers the class with the Component Manager with an xtype of
- * bookgrid. This allows the application to take care of the lazy-instatiation
- * facilities provided in Ext's Component Model.
- */
-App.BookGrid = Ext.extend(Ext.grid.GridPanel, {
- // override
- initComponent : function() {
- Ext.apply(this, {
- // Pass in a column model definition
- // Note that the DetailPageURL was defined in the record definition but is not used
- // here. That is okay.
- columns: [
- {header: "Author", width: 120, dataIndex: 'Author', sortable: true},
- {header: "Title", dataIndex: 'Title', sortable: true},
- {header: "Manufacturer", width: 115, dataIndex: 'Manufacturer', sortable: true},
- {header: "Product Group", dataIndex: 'ProductGroup', sortable: true}
- ],
- sm: new Ext.grid.RowSelectionModel({singleSelect: true}),
- // Note the use of a storeId, this will register thisStore
- // with the StoreMgr and allow us to retrieve it very easily.
- store: new App.BookStore({
- storeId: 'gridBookStore',
- url: 'sheldon.xml'
- }),
- // force the grid to fit the space which is available
- viewConfig: {
- forceFit: true
- }
- });
- // finally call the superclasses implementation
- App.BookGrid.superclass.initComponent.call(this);
- }
-});
-// This will associate an string representation of a class
-// (called an xtype) with the Component Manager
-// It allows you to support lazy instantiation of your components
-Ext.reg('bookgrid', App.BookGrid);
-
-
-/**
- * App.BookDetail
- * @extends Ext.Panel
- * This is a specialized Panel which is used to show information about
- * a book.
- *
- * This demonstrates adding 2 custom properties (tplMarkup and
- * startingMarkup) to the class. It also overrides the initComponent
- * method and adds a new method called updateDetail.
- *
- * The class will be registered with an xtype of 'bookdetail'
- */
-App.BookDetail = Ext.extend(Ext.Panel, {
- // add tplMarkup as a new property
- tplMarkup: [
- 'Title: {Title} ',
- 'Author: {Author} ',
- 'Manufacturer: {Manufacturer} ',
- 'Product Group: {ProductGroup} '
- ],
- // startingMarup as a new property
- startingMarkup: 'Please select a book to see additional details',
- // override initComponent to create and compile the template
- // apply styles to the body of the panel and initialize
- // html to startingMarkup
- initComponent: function() {
- this.tpl = new Ext.Template(this.tplMarkup);
- Ext.apply(this, {
- bodyStyle: {
- background: '#ffffff',
- padding: '7px'
- },
- html: this.startingMarkup
- });
- // call the superclass's initComponent implementation
- App.BookDetail.superclass.initComponent.call(this);
- },
- // add a method which updates the details
- updateDetail: function(data) {
- this.tpl.overwrite(this.body, data);
- }
-});
-// register the App.BookDetail class with an xtype of bookdetail
-Ext.reg('bookdetail', App.BookDetail);
-
-
-/**
- * App.BookMasterDetail
- * @extends Ext.Panel
- *
- * This is a specialized panel which is composed of both a bookgrid
- * and a bookdetail panel. It provides the glue between the two
- * components to allow them to communicate. You could consider this
- * the actual application.
- *
- */
-App.BookMasterDetail = Ext.extend(Ext.Panel, {
- // override initComponent
- initComponent: function() {
- // used applyIf rather than apply so user could
- // override the defaults
- Ext.applyIf(this, {
- frame: true,
- title: 'Book List',
- width: 540,
- height: 400,
- layout: 'border',
- items: [{
- xtype: 'bookgrid',
- itemId: 'gridPanel',
- region: 'north',
- height: 210,
- split: true
- },{
- xtype: 'bookdetail',
- itemId: 'detailPanel',
- region: 'center'
- }]
- })
- // call the superclass's initComponent implementation
- App.BookMasterDetail.superclass.initComponent.call(this);
- },
- // override initEvents
- initEvents: function() {
- // call the superclass's initEvents implementation
- App.BookMasterDetail.superclass.initEvents.call(this);
-
- // now add application specific events
- // notice we use the selectionmodel's rowselect event rather
- // than a click event from the grid to provide key navigation
- // as well as mouse navigation
- var bookGridSm = this.getComponent('gridPanel').getSelectionModel();
- bookGridSm.on('rowselect', this.onRowSelect, this);
- },
- // add a method called onRowSelect
- // This matches the method signature as defined by the 'rowselect'
- // event defined in Ext.grid.RowSelectionModel
- onRowSelect: function(sm, rowIdx, r) {
- // getComponent will retrieve itemId's or id's. Note that itemId's
- // are scoped locally to this instance of a component to avoid
- // conflicts with the ComponentMgr
- var detailPanel = this.getComponent('detailPanel');
- detailPanel.updateDetail(r.data);
- }
-});
-// register an xtype with this class
-Ext.reg('bookmasterdetail', App.BookMasterDetail);
-
-
-// Finally now that we've defined all of our classes we can instantiate
-// an instance of the app and renderTo an existing div called 'binding-example'
-// Note now that classes have encapsulated this behavior we can easily create
-// an instance of this app to be used in many different contexts, you could
-// easily place this application in an Ext.Window for example
-Ext.onReady(function() {
- // create an instance of the app
- var bookApp = new App.BookMasterDetail({
- renderTo: 'binding-example'
- });
- // We can retrieve a reference to the data store
- // via the StoreMgr by its storeId
- Ext.StoreMgr.get('gridBookStore').load();
-});