/** * @class Ext.dataview.DataView * @extend Ext.Container * @xtype dataview * * DataView makes it easy to create lots of components dynamically, usually based off a {@link Ext.data.Store Store}. * It's great for rendering lots of data from your server backend or any other data source and is what powers * components like {@link Ext.List}. * * Use DataView whenever you want to show sets of the same component many times, for examples in apps like these: * * - List of messages in an email app * - Showing latest news/tweets * - Tiled set of albums in an HTML5 music player * * # Creating a Simple DataView * * At its simplest, a DataView is just a Store full of data and a simple template that we * use to render each item: ** @example packages=[extangular]* import { Component } from '@angular/core'* declare var Ext: any;** @Component({* selector: 'app-root-1',* styles: [`* `],* template: `* <dataview #item* [itemTpl]="this.itemTpl"* [store]="this.store"* ></dataview>* `* })* export class AppComponent {* store = new Ext.data.Store({* data: [* {name: 'Peter', age: 26},* {name: 'Ray', age: 21},* {name: 'Egon', age: 29},* {name: 'Winston', age: 24},* ]* });** itemTpl = `{name} is {age} years old`;* } * * * Here we just defined everything inline so it's all local with nothing being loaded from a server. For each of the * data items defined in our Store, DataView will render a {@link Ext.Component Component} and pass in the name and age * data. The component will use the tpl we provided above, rendering the data in the curly bracket placeholders we * provided. * * Because DataView is integrated with Store, any changes to the Store are immediately reflected on the screen. For * example, if we add a new record to the Store it will be rendered into our DataView: * * this.store().add({ * name: 'Gozer', * age: 567 * }); * * We didn't have to manually update the DataView, it's just automatically updated. The same happens if we modify one * of the existing records in the Store: * * this.store.getAt(0).set('age', 42); * * This will get the first record in the Store (Peter), change the age to 42 and automatically update what's on the * screen. * * this.store.add({ * name: 'Gozer', * age: 21 * }); * * this.store.getAt(0).set('age', 42); * * # Loading data from a server * * We often want to load data from our server or some other web service so that we don't have to hard code it all * locally. Let's say we want to load some horror movies from Rotten Tomatoes into a DataView, and for each one * render the cover image and title. To do this all we have to do is grab an api key from * rotten tomatoes (http://developer.rottentomatoes.com/) and modify the {@link #store} * and {@link #itemTpl} a little: ** @example packages=[extangular]* import { Component } from '@angular/core'* declare var Ext: any;** @Component({* selector: 'app-root-1',* styles: [`* `],* template: `* <dataview #item* [itemTpl]="this.itemTpl"* [store]="this.store"* ></dataview>* `* })* export class AppComponent {* store = new Ext.data.Store({* autoLoad: true,* proxy: {* type: 'jsonp',* url: 'https://itunes.apple.com/search?term=Pink+Floyd&entity=album',* reader: {* type: 'json',* rootProperty: 'results'* }* }* });** itemTpl = "<h2>{collectionName}</h2><p><img src='{artworkUrl100}' /></p>"* } * * The Store no longer has hard coded data, instead we've provided a {@link Ext.data.proxy.Proxy Proxy}, which fetches * the data for us. In this case we used a JSON-P proxy. */ /** * @method prepareData * Function which can be overridden to provide custom formatting for each Record that is used by this * DataView's {@link #tpl template} to render each node. * @param {Object/Object[]} data The raw data object that was used to create the Record. * @param {Number} index the index number of the Record being prepared for rendering. * @param {Ext.data.Model} record The Record being prepared for rendering. * @return {Array/Object} The formatted data in a format expected by the internal {@link #tpl template}'s `overwrite()` method. * (either an array if your params are numeric (i.e. `{0}`) or an object (i.e. `{foo: 'bar'}`)) */ /** * @method onNavigate * This method is called by the {@link #cfg!navigationModel} when navigation events are * detected within this DataView. * * It may be overridden to control the linkage of navigation events such as * taps, clicks or keystrokes detected by the {@link #cfg!navigationModel} to * the {@link #cfg!selectionModel}. * * `callParent` if you wish selection to proceed from the passed event. * @param {Ext.event.Event} e The UI event which caused the navigation. */ /** * @method refresh * Refreshes the view by reloading the data from the store and re-rendering * the template. */ /** * @method getItemAt * Returns an item at the specified index. * @param {Number} index Index of the item. * @return {HTMLElement/Ext.dataview.component.DataItem} item Item at the specified index. */ /** * @method getItemIndex * Returns an index for the specified item. * @param {Ext.dom.Element/HTMLElement/Ext.dataview.component.DataItem} item The item to locate. * @return {Number} Index for the specified item. */ /** * @method getViewItems * Returns an array of the current items in the DataView. Depends on the {@link #cfg-useComponents} * configuration. * @return {HTMLElement[]/Ext.dataview.component.DataItem[]} The items. */ /** * @property {Boolean} [isDataView=true] * `true` in this class to identify an object as an instantiated DataView, or subclass thereof. */ /** * @event itemtouchstart * Fires whenever an item is touched * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item touched * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem touched * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemtouchmove * Fires whenever an item is moved * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item moved * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem moved * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemtouchend * Fires whenever an item is touched * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item touched * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem touched * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemtouchcancel * Fires whenever an item touch is cancelled * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item touched * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem touched * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemtap * Fires whenever an item is tapped * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item tapped * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem tapped * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemlongpress * Fires whenever an item's longpress event fires * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item touched * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem touched * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemtaphold * Fires whenever an item's taphold event fires * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item touched * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem touched * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemsingletap * Fires whenever an item is singletapped * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item singletapped * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem singletapped * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemdoubletap * Fires whenever an item is doubletapped * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item doubletapped * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem doubletapped * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemswipe * Fires whenever an item is swiped * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item swiped * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem swiped * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemmouseenter * Fires whenever the mouse pointer moves over an item * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event itemmouseleave * Fires whenever the mouse pointer leaves an item * @param {Ext.dataview.DataView} this * @param {Number} index The index of the item * @param {Ext.Element/Ext.dataview.component.DataItem} target The element or DataItem * @param {Ext.data.Model} record The record associated to the item * @param {Ext.event.Event} e The event object */ /** * @event select * Fires whenever an item is selected * @param {Ext.dataview.DataView} this * @param {Ext.data.Model[]} records The records being selected */ /** * @event deselect * Fires whenever an item is deselected * @param {Ext.dataview.DataView} this * @param {Ext.data.Model[]} records The records being deselected * @param {Boolean} supressed Flag to suppress the event */ /** * @event refresh * @preventable * Fires whenever the DataView is refreshed * @param {Ext.dataview.DataView} this */ /** * @hide * @event add */ /** * @hide * @event remove */ /** * @hide * @event move */ /** * @cfg {Ext.data.Store/Object} [store=null] (required) * Can be either a Store instance or a configuration object that will be turned into a Store. The Store is used * to populate the set of items that will be rendered in the DataView. See the DataView intro documentation for * more information about the relationship between Store and DataView. * @accessor */ /** * @cfg [data=null] * @inheritdoc * @accessor */ /** * @cfg {String} [emptyText=null] * The text to display in the view when there is no data to display * @accessor */ /** * @cfg {Boolean} [deferEmptyText=true] * `true` to defer `emptyText` being applied until the store's first load. * @accessor */ /** * @cfg {String/String[]/Ext.XTemplate} [itemTpl='<div>{text}</div>'] * The `tpl` to use for each of the items displayed in this DataView. * @accessor */ /** * @cfg {String} [itemCls=null] * An additional CSS class to apply to items within the DataView. * @accessor */ /** * @cfg {String} [triggerEvent='itemtap'] * Determines what type of touch event causes an item to be selected. * Valid options are: 'itemtap', 'itemsingletap', * 'itemdoubletap', 'itemswipe', 'itemtaphold', 'itemlongpress'. * @accessor */ /** * @cfg {String} [triggerCtEvent='tap'] * Determines what type of touch event is recognized as a touch on the container. * Valid options are 'tap' and 'singletap'. * @accessor */ /** * @cfg {Boolean} [deselectOnContainerClick=true] * When set to true, tapping on the DataView's background (i.e. not on * an item in the DataView) will deselect any currently selected items. * @accessor */ /** * @cfg [scrollable=true] * @inheritdoc * @accessor */ /** * @cfg {Boolean/Object} [inline=null] * When set to `true` the items within the DataView will have their display set to inline-block * and be arranged horizontally. By default the items will wrap to the width of the DataView. * Passing an object with `{ wrap: false }` will turn off this wrapping behavior and overflowed * items will need to be scrolled to horizontally. * @accessor */ /** * @cfg {Number} [pressedDelay=100] * The amount of delay between the `tapstart` and the moment we add the `pressedCls`. * @accessor */ /** * @cfg {String/Boolean} [loadingText='Loading...'] * A string to display during data load operations. If specified, this text will be * displayed in a loading div and the view's contents will be cleared while loading, otherwise the view's * contents will continue to display normally until the new data is loaded and the contents are replaced. */ /** * @cfg {Boolean} [useComponents=null] * Flag the use a component based DataView implementation. This allows the full use of components in the * DataView at the cost of some performance. * * @accessor */ /** * @cfg {Object} [itemConfig=null] * A configuration object that is passed to every item created by a component based DataView. Because each * item that a DataView renders is a Component, we can pass configuration options to each component to * easily customize how each child component behaves. * * __Note:__ this is only used when `{@link #useComponents}` is `true`. * @accessor */ /** * @cfg {Number} [maxItemCache=20] * Maintains a cache of reusable components when using a component based DataView. Improving performance at * the cost of memory. * * __Note:__ this is currently only used when `{@link #useComponents}` is `true`. * @accessor */ /** * @cfg {String} [defaultType='dataitem'] * The xtype used for the component based DataView. * * __Note:__ this is only used when `{@link #useComponents}` is `true`. * @accessor */ /** * @cfg {Boolean} [scrollToTopOnRefresh=true] * Scroll the DataView to the top when the DataView is refreshed. * @accessor */ /** * @cfg {Number} [loadingHeight=null] * If specified, gives an explicit height for a {@link #cfg!floated} data view when it is showing the {@link #loadingText}, * if that is specified. This is useful to prevent the view's height from collapsing to zero when the * loading mask is applied and there are no other contents in the data view. * @accessor */