Store.js
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上传日期:2018-01-28
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中间件编程
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JavaScript
- /*!
- * Ext JS Library 3.0.0
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
- /**
- * @class Ext.data.Store
- * @extends Ext.util.Observable
- * <p>The Store class encapsulates a client side cache of {@link Ext.data.Record Record}
- * objects which provide input data for Components such as the {@link Ext.grid.GridPanel GridPanel},
- * the {@link Ext.form.ComboBox ComboBox}, or the {@link Ext.DataView DataView}.</p>
- * <p><u>Retrieving Data</u></p>
- * <p>A Store object may access a data object using:<div class="mdetail-params"><ul>
- * <li>{@link #proxy configured implementation} of {@link Ext.data.DataProxy DataProxy}</li>
- * <li>{@link #data} to automatically pass in data</li>
- * <li>{@link #loadData} to manually pass in data</li>
- * </ul></div></p>
- * <p><u>Reading Data</u></p>
- * <p>A Store object has no inherent knowledge of the format of the data object (it could be
- * an Array, XML, or JSON). A Store object uses an appropriate {@link #reader configured implementation}
- * of a {@link Ext.data.DataReader DataReader} to create {@link Ext.data.Record Record} instances from the data
- * object.</p>
- * <p><u>Store Types</u></p>
- * <p>There are several implementations of Store available which are customized for use with
- * a specific DataReader implementation. Here is an example using an ArrayStore which implicitly
- * creates a reader commensurate to an Array data object.</p>
- * <pre><code>
- var myStore = new Ext.data.ArrayStore({
- fields: ['fullname', 'first'],
- idIndex: 0 // id for each record will be the first element
- });
- * </code></pre>
- * <p>For custom implementations create a basic {@link Ext.data.Store} configured as needed:</p>
- * <pre><code>
- // create a {@link Ext.data.Record Record} constructor:
- var rt = Ext.data.Record.create([
- {name: 'fullname'},
- {name: 'first'}
- ]);
- var myStore = new Ext.data.Store({
- // explicitly create reader
- reader: new Ext.data.ArrayReader(
- {
- idIndex: 0 // id for each record will be the first element
- },
- rt // recordType
- )
- });
- * </code></pre>
- * <p>Load some data into store (note the data object is an array which corresponds to the reader):</p>
- * <pre><code>
- var myData = [
- [1, 'Fred Flintstone', 'Fred'], // note that id for the record is the first element
- [2, 'Barney Rubble', 'Barney']
- ];
- myStore.loadData(myData);
- * </code></pre>
- * <p>Records are cached and made available through accessor functions. An example of adding
- * a record to the store:</p>
- * <pre><code>
- var defaultData = {
- fullname: 'Full Name',
- first: 'First Name'
- };
- var recId = 100; // provide unique id for the record
- var r = new myStore.recordType(defaultData, ++recId); // create new record
- myStore.{@link #insert}(0, r); // insert a new record into the store (also see {@link #add})
- * </code></pre>
- * @constructor
- * Creates a new Store.
- * @param {Object} config A config object containing the objects needed for the Store to access data,
- * and read the data into Records.
- * @xtype store
- */
- Ext.data.Store = function(config){
- this.data = new Ext.util.MixedCollection(false);
- this.data.getKey = function(o){
- return o.id;
- };
- /**
- * See the <code>{@link #baseParams corresponding configuration option}</code>
- * for a description of this property.
- * To modify this property see <code>{@link #setBaseParam}</code>.
- * @property
- */
- this.baseParams = {};
- // temporary removed-records cache
- this.removed = [];
- if(config && config.data){
- this.inlineData = config.data;
- delete config.data;
- }
- Ext.apply(this, config);
- this.paramNames = Ext.applyIf(this.paramNames || {}, this.defaultParamNames);
- if(this.url && !this.proxy){
- this.proxy = new Ext.data.HttpProxy({url: this.url});
- }
- // If Store is RESTful, so too is the DataProxy
- if (this.restful === true && this.proxy) {
- // When operating RESTfully, a unique transaction is generated for each record.
- this.batch = false;
- Ext.data.Api.restify(this.proxy);
- }
- if(this.reader){ // reader passed
- if(!this.recordType){
- this.recordType = this.reader.recordType;
- }
- if(this.reader.onMetaChange){
- this.reader.onMetaChange = this.onMetaChange.createDelegate(this);
- }
- if (this.writer) { // writer passed
- this.writer.meta = this.reader.meta;
- this.pruneModifiedRecords = true;
- }
- }
- /**
- * The {@link Ext.data.Record Record} constructor as supplied to (or created by) the
- * {@link Ext.data.DataReader Reader}. Read-only.
- * <p>If the Reader was constructed by passing in an Array of {@link Ext.data.Field} definition objects,
- * instead of a Record constructor, it will implicitly create a Record constructor from that Array (see
- * {@link Ext.data.Record}.{@link Ext.data.Record#create create} for additional details).</p>
- * <p>This property may be used to create new Records of the type held in this Store, for example:</p><pre><code>
- // create the data store
- var store = new Ext.data.ArrayStore({
- autoDestroy: true,
- fields: [
- {name: 'company'},
- {name: 'price', type: 'float'},
- {name: 'change', type: 'float'},
- {name: 'pctChange', type: 'float'},
- {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
- ]
- });
- store.loadData(myData);
- // create the Grid
- var grid = new Ext.grid.EditorGridPanel({
- store: store,
- colModel: new Ext.grid.ColumnModel({
- columns: [
- {id:'company', header: 'Company', width: 160, dataIndex: 'company'},
- {header: 'Price', renderer: 'usMoney', dataIndex: 'price'},
- {header: 'Change', renderer: change, dataIndex: 'change'},
- {header: '% Change', renderer: pctChange, dataIndex: 'pctChange'},
- {header: 'Last Updated', width: 85,
- renderer: Ext.util.Format.dateRenderer('m/d/Y'),
- dataIndex: 'lastChange'}
- ],
- defaults: {
- sortable: true,
- width: 75
- }
- }),
- autoExpandColumn: 'company', // match the id specified in the column model
- height:350,
- width:600,
- title:'Array Grid',
- tbar: [{
- text: 'Add Record',
- handler : function(){
- var defaultData = {
- change: 0,
- company: 'New Company',
- lastChange: (new Date()).clearTime(),
- pctChange: 0,
- price: 10
- };
- var recId = 3; // provide unique id
- var p = new store.recordType(defaultData, recId); // create new record
- grid.stopEditing();
- store.{@link #insert}(0, p); // insert a new record into the store (also see {@link #add})
- grid.startEditing(0, 0);
- }
- }]
- });
- * </code></pre>
- * @property recordType
- * @type Function
- */
- if(this.recordType){
- /**
- * A {@link Ext.util.MixedCollection MixedCollection} containing the defined {@link Ext.data.Field Field}s
- * for the {@link Ext.data.Record Records} stored in this Store. Read-only.
- * @property fields
- * @type Ext.util.MixedCollection
- */
- this.fields = this.recordType.prototype.fields;
- }
- this.modified = [];
- this.addEvents(
- /**
- * @event datachanged
- * Fires when the data cache has changed in a bulk manner (e.g., it has been sorted, filtered, etc.) and a
- * widget that is using this Store as a Record cache should refresh its view.
- * @param {Store} this
- */
- 'datachanged',
- /**
- * @event metachange
- * Fires when this store's reader provides new metadata (fields). This is currently only supported for JsonReaders.
- * @param {Store} this
- * @param {Object} meta The JSON metadata
- */
- 'metachange',
- /**
- * @event add
- * Fires when Records have been {@link #add}ed to the Store
- * @param {Store} this
- * @param {Ext.data.Record[]} records The array of Records added
- * @param {Number} index The index at which the record(s) were added
- */
- 'add',
- /**
- * @event remove
- * Fires when a Record has been {@link #remove}d from the Store
- * @param {Store} this
- * @param {Ext.data.Record} record The Record that was removed
- * @param {Number} index The index at which the record was removed
- */
- 'remove',
- /**
- * @event update
- * Fires when a Record has been updated
- * @param {Store} this
- * @param {Ext.data.Record} record The Record that was updated
- * @param {String} operation The update operation being performed. Value may be one of:
- * <pre><code>
- Ext.data.Record.EDIT
- Ext.data.Record.REJECT
- Ext.data.Record.COMMIT
- * </code></pre>
- */
- 'update',
- /**
- * @event clear
- * Fires when the data cache has been cleared.
- * @param {Store} this
- */
- 'clear',
- /**
- * @event exception
- * <p>Fires if an exception occurs in the Proxy during a remote request.
- * This event is relayed through the corresponding {@link Ext.data.DataProxy}.
- * See {@link Ext.data.DataProxy}.{@link Ext.data.DataProxy#exception exception}
- * for additional details.
- * @param {misc} misc See {@link Ext.data.DataProxy}.{@link Ext.data.DataProxy#exception exception}
- * for description.
- */
- 'exception',
- /**
- * @event beforeload
- * Fires before a request is made for a new data object. If the beforeload handler returns
- * <tt>false</tt> the {@link #load} action will be canceled.
- * @param {Store} this
- * @param {Object} options The loading options that were specified (see {@link #load} for details)
- */
- 'beforeload',
- /**
- * @event load
- * Fires after a new set of Records has been loaded.
- * @param {Store} this
- * @param {Ext.data.Record[]} records The Records that were loaded
- * @param {Object} options The loading options that were specified (see {@link #load} for details)
- */
- 'load',
- /**
- * @event loadexception
- * <p>This event is <b>deprecated</b> in favor of the catch-all <b><code>{@link #exception}</code></b>
- * event instead.</p>
- * <p>This event is relayed through the corresponding {@link Ext.data.DataProxy}.
- * See {@link Ext.data.DataProxy}.{@link Ext.data.DataProxy#loadexception loadexception}
- * for additional details.
- * @param {misc} misc See {@link Ext.data.DataProxy}.{@link Ext.data.DataProxy#loadexception loadexception}
- * for description.
- */
- 'loadexception',
- /**
- * @event beforewrite
- * @param {DataProxy} this
- * @param {String} action [Ext.data.Api.actions.create|update|destroy]
- * @param {Record/Array[Record]} rs
- * @param {Object} options The loading options that were specified. Edit <code>options.params</code> to add Http parameters to the request. (see {@link #save} for details)
- * @param {Object} arg The callback's arg object passed to the {@link #request} function
- */
- 'beforewrite',
- /**
- * @event write
- * Fires if the server returns 200 after an Ext.data.Api.actions CRUD action.
- * Success or failure of the action is available in the <code>result['successProperty']</code> property.
- * The server-code might set the <code>successProperty</code> to <tt>false</tt> if a database validation
- * failed, for example.
- * @param {Ext.data.Store} store
- * @param {String} action [Ext.data.Api.actions.create|update|destroy]
- * @param {Object} result The 'data' picked-out out of the response for convenience.
- * @param {Ext.Direct.Transaction} res
- * @param {Record/Record[]} rs Store's records, the subject(s) of the write-action
- */
- 'write'
- );
- if(this.proxy){
- this.relayEvents(this.proxy, ['loadexception', 'exception']);
- }
- // With a writer set for the Store, we want to listen to add/remove events to remotely create/destroy records.
- if (this.writer) {
- this.on({
- scope: this,
- add: this.createRecords,
- remove: this.destroyRecord,
- update: this.updateRecord
- });
- }
- this.sortToggle = {};
- if(this.sortField){
- this.setDefaultSort(this.sortField, this.sortDir);
- }else if(this.sortInfo){
- this.setDefaultSort(this.sortInfo.field, this.sortInfo.direction);
- }
- Ext.data.Store.superclass.constructor.call(this);
- if(this.id){
- this.storeId = this.id;
- delete this.id;
- }
- if(this.storeId){
- Ext.StoreMgr.register(this);
- }
- if(this.inlineData){
- this.loadData(this.inlineData);
- delete this.inlineData;
- }else if(this.autoLoad){
- this.load.defer(10, this, [
- typeof this.autoLoad == 'object' ?
- this.autoLoad : undefined]);
- }
- };
- Ext.extend(Ext.data.Store, Ext.util.Observable, {
- /**
- * @cfg {String} storeId If passed, the id to use to register with the <b>{@link Ext.StoreMgr StoreMgr}</b>.
- * <p><b>Note</b>: if a (deprecated) <tt>{@link #id}</tt> is specified it will supersede the <tt>storeId</tt>
- * assignment.</p>
- */
- /**
- * @cfg {String} url If a <tt>{@link #proxy}</tt> is not specified the <tt>url</tt> will be used to
- * implicitly configure a {@link Ext.data.HttpProxy HttpProxy} if an <tt>url</tt> is specified.
- * Typically this option, or the <code>{@link #data}</code> option will be specified.
- */
- /**
- * @cfg {Boolean/Object} autoLoad If <tt>{@link #data}</tt> is not specified, and if <tt>autoLoad</tt>
- * is <tt>true</tt> or an <tt>Object</tt>, this store's {@link #load} method is automatically called
- * after creation. If the value of <tt>autoLoad</tt> is an <tt>Object</tt>, this <tt>Object</tt> will
- * be passed to the store's {@link #load} method.
- */
- /**
- * @cfg {Ext.data.DataProxy} proxy The {@link Ext.data.DataProxy DataProxy} object which provides
- * access to a data object. See <code>{@link #url}</code>.
- */
- /**
- * @cfg {Array} data An inline data object readable by the <code>{@link #reader}</code>.
- * Typically this option, or the <code>{@link #url}</code> option will be specified.
- */
- /**
- * @cfg {Ext.data.DataReader} reader The {@link Ext.data.DataReader Reader} object which processes the
- * data object and returns an Array of {@link Ext.data.Record} objects which are cached keyed by their
- * <b><tt>{@link Ext.data.Record#id id}</tt></b> property.
- */
- /**
- * @cfg {Ext.data.DataWriter} writer
- * <p>The {@link Ext.data.DataWriter Writer} object which processes a record object for being written
- * to the server-side database.</p>
- * <br><p>When a writer is installed into a Store the {@link #add}, {@link #remove}, and {@link #update}
- * events on the store are monitored in order to remotely {@link #createRecords create records},
- * {@link #destroyRecord destroy records}, or {@link #updateRecord update records}.</p>
- * <br><p>The proxy for this store will relay any {@link #writexception} events to this store.</p>
- * <br><p>Sample implementation:
- * <pre><code>
- var writer = new {@link Ext.data.JsonWriter}({
- encode: true,
- writeAllFields: true // write all fields, not just those that changed
- });
- // Typical Store collecting the Proxy, Reader and Writer together.
- var store = new Ext.data.Store({
- storeId: 'user',
- root: 'records',
- proxy: proxy,
- reader: reader,
- writer: writer, // <-- plug a DataWriter into the store just as you would a Reader
- paramsAsHash: true,
- autoSave: false // <-- false to delay executing create, update, destroy requests
- // until specifically told to do so.
- });
- * </code></pre></p>
- */
- writer : undefined,
- /**
- * @cfg {Object} baseParams
- * <p>An object containing properties which are to be sent as parameters
- * for <i>every</i> HTTP request.</p>
- * <p>Parameters are encoded as standard HTTP parameters using {@link Ext#urlEncode}.</p>
- * <p><b>Note</b>: <code>baseParams</code> may be superseded by any <code>params</code>
- * specified in a <code>{@link #load}</code> request, see <code>{@link #load}</code>
- * for more details.</p>
- * This property may be modified after creation using the <code>{@link #setBaseParam}</code>
- * method.
- * @property
- */
- /**
- * @cfg {Object} sortInfo A config object to specify the sort order in the request of a Store's
- * {@link #load} operation. Note that for local sorting, the <tt>direction</tt> property is
- * case-sensitive. See also {@link #remoteSort} and {@link #paramNames}.
- * For example:<pre><code>
- sortInfo: {
- field: 'fieldName',
- direction: 'ASC' // or 'DESC' (case sensitive for local sorting)
- }
- </code></pre>
- */
- /**
- * @cfg {boolean} remoteSort <tt>true</tt> if sorting is to be handled by requesting the <tt>{@link #proxy Proxy}</tt>
- * to provide a refreshed version of the data object in sorted order, as opposed to sorting the Record cache
- * in place (defaults to <tt>false</tt>).
- * <p>If <tt>remoteSort</tt> is <tt>true</tt>, then clicking on a {@link Ext.grid.Column Grid Column}'s
- * {@link Ext.grid.Column#header header} causes the current page to be requested from the server appending
- * the following two parameters to the <b><tt>{@link #load params}</tt></b>:<div class="mdetail-params"><ul>
- * <li><b><tt>sort</tt></b> : String<p class="sub-desc">The <tt>name</tt> (as specified in the Record's
- * {@link Ext.data.Field Field definition}) of the field to sort on.</p></li>
- * <li><b><tt>dir</tt></b> : String<p class="sub-desc">The direction of the sort, 'ASC' or 'DESC' (case-sensitive).</p></li>
- * </ul></div></p>
- */
- remoteSort : false,
- /**
- * @cfg {Boolean} autoDestroy <tt>true</tt> to destroy the store when the component the store is bound
- * to is destroyed (defaults to <tt>false</tt>).
- * <p><b>Note</b>: this should be set to true when using stores that are bound to only 1 component.</p>
- */
- autoDestroy : false,
- /**
- * @cfg {Boolean} pruneModifiedRecords <tt>true</tt> to clear all modified record information each time
- * the store is loaded or when a record is removed (defaults to <tt>false</tt>). See {@link #getModifiedRecords}
- * for the accessor method to retrieve the modified records.
- */
- pruneModifiedRecords : false,
- /**
- * Contains the last options object used as the parameter to the {@link #load} method. See {@link #load}
- * for the details of what this may contain. This may be useful for accessing any params which were used
- * to load the current Record cache.
- * @property
- */
- lastOptions : null,
- /**
- * @cfg {Boolean} autoSave
- * <p>Defaults to <tt>true</tt> causing the store to automatically {@link #save} records to
- * the server when a record is modified (ie: becomes 'dirty'). Specify <tt>false</tt> to manually call {@link #save}
- * to send all modifiedRecords to the server.</p>
- * <br><p><b>Note</b>: each CRUD action will be sent as a separate request.</p>
- */
- autoSave : true,
- /**
- * @cfg {Boolean} batch
- * <p>Defaults to <tt>true</tt> (unless <code>{@link #restful}:true</code>). Multiple
- * requests for each CRUD action (CREATE, READ, UPDATE and DESTROY) will be combined
- * and sent as one transaction. Only applies when <code>{@link #autoSave}</code> is set
- * to <tt>false</tt>.</p>
- * <br><p>If Store is RESTful, the DataProxy is also RESTful, and a unique transaction is
- * generated for each record.</p>
- */
- batch : true,
- /**
- * @cfg {Boolean} restful
- * Defaults to <tt>false</tt>. Set to <tt>true</tt> to have the Store and the set
- * Proxy operate in a RESTful manner. The store will automatically generate GET, POST,
- * PUT and DELETE requests to the server. The HTTP method used for any given CRUD
- * action is described in {@link Ext.data.Api#restActions}. For additional information
- * see {@link Ext.data.DataProxy#restful}.
- * <p><b>Note</b>: if <code>{@link #restful}:true</code> <code>batch</code> will
- * internally be set to <tt>false</tt>.</p>
- */
- restful: false,
- /**
- * @cfg {Object} paramNames
- * <p>An object containing properties which specify the names of the paging and
- * sorting parameters passed to remote servers when loading blocks of data. By default, this
- * object takes the following form:</p><pre><code>
- {
- start : 'start', // The parameter name which specifies the start row
- limit : 'limit', // The parameter name which specifies number of rows to return
- sort : 'sort', // The parameter name which specifies the column to sort on
- dir : 'dir' // The parameter name which specifies the sort direction
- }
- </code></pre>
- * <p>The server must produce the requested data block upon receipt of these parameter names.
- * If different parameter names are required, this property can be overriden using a configuration
- * property.</p>
- * <p>A {@link Ext.PagingToolbar PagingToolbar} bound to this Store uses this property to determine
- * the parameter names to use in its {@link #load requests}.
- */
- paramNames : undefined,
- /**
- * @cfg {Object} defaultParamNames
- * Provides the default values for the {@link #paramNames} property. To globally modify the parameters
- * for all stores, this object should be changed on the store prototype.
- */
- defaultParamNames : {
- start : 'start',
- limit : 'limit',
- sort : 'sort',
- dir : 'dir'
- },
- /**
- * Destroys the store.
- */
- destroy : function(){
- if(this.storeId){
- Ext.StoreMgr.unregister(this);
- }
- this.data = null;
- Ext.destroy(this.proxy);
- this.reader = this.writer = null;
- this.purgeListeners();
- },
- /**
- * Add Records to the Store and fires the {@link #add} event. To add Records
- * to the store from a remote source use <code>{@link #load}({add:true})</code>.
- * See also <code>{@link #recordType}</code> and <code>{@link #insert}</code>.
- * @param {Ext.data.Record[]} records An Array of Ext.data.Record objects
- * to add to the cache. See {@link #recordType}.
- */
- add : function(records){
- records = [].concat(records);
- if(records.length < 1){
- return;
- }
- for(var i = 0, len = records.length; i < len; i++){
- records[i].join(this);
- }
- var index = this.data.length;
- this.data.addAll(records);
- if(this.snapshot){
- this.snapshot.addAll(records);
- }
- this.fireEvent('add', this, records, index);
- },
- /**
- * (Local sort only) Inserts the passed Record into the Store at the index where it
- * should go based on the current sort information.
- * @param {Ext.data.Record} record
- */
- addSorted : function(record){
- var index = this.findInsertIndex(record);
- this.insert(index, record);
- },
- /**
- * Remove a Record from the Store and fires the {@link #remove} event.
- * @param {Ext.data.Record} record The Ext.data.Record object to remove from the cache.
- */
- remove : function(record){
- var index = this.data.indexOf(record);
- if(index > -1){
- this.data.removeAt(index);
- if(this.pruneModifiedRecords){
- this.modified.remove(record);
- }
- if(this.snapshot){
- this.snapshot.remove(record);
- }
- this.fireEvent('remove', this, record, index);
- }
- },
- /**
- * Remove a Record from the Store at the specified index. Fires the {@link #remove} event.
- * @param {Number} index The index of the record to remove.
- */
- removeAt : function(index){
- this.remove(this.getAt(index));
- },
- /**
- * Remove all Records from the Store and fires the {@link #clear} event.
- */
- removeAll : function(){
- this.data.clear();
- if(this.snapshot){
- this.snapshot.clear();
- }
- if(this.pruneModifiedRecords){
- this.modified = [];
- }
- this.fireEvent('clear', this);
- },
- /**
- * Inserts Records into the Store at the given index and fires the {@link #add} event.
- * See also <code>{@link #add}</code> and <code>{@link #addSorted}</code>.
- * @param {Number} index The start index at which to insert the passed Records.
- * @param {Ext.data.Record[]} records An Array of Ext.data.Record objects to add to the cache.
- */
- insert : function(index, records){
- records = [].concat(records);
- for(var i = 0, len = records.length; i < len; i++){
- this.data.insert(index, records[i]);
- records[i].join(this);
- }
- this.fireEvent('add', this, records, index);
- },
- /**
- * Get the index within the cache of the passed Record.
- * @param {Ext.data.Record} record The Ext.data.Record object to find.
- * @return {Number} The index of the passed Record. Returns -1 if not found.
- */
- indexOf : function(record){
- return this.data.indexOf(record);
- },
- /**
- * Get the index within the cache of the Record with the passed id.
- * @param {String} id The id of the Record to find.
- * @return {Number} The index of the Record. Returns -1 if not found.
- */
- indexOfId : function(id){
- return this.data.indexOfKey(id);
- },
- /**
- * Get the Record with the specified id.
- * @param {String} id The id of the Record to find.
- * @return {Ext.data.Record} The Record with the passed id. Returns undefined if not found.
- */
- getById : function(id){
- return this.data.key(id);
- },
- /**
- * Get the Record at the specified index.
- * @param {Number} index The index of the Record to find.
- * @return {Ext.data.Record} The Record at the passed index. Returns undefined if not found.
- */
- getAt : function(index){
- return this.data.itemAt(index);
- },
- /**
- * Returns a range of Records between specified indices.
- * @param {Number} startIndex (optional) The starting index (defaults to 0)
- * @param {Number} endIndex (optional) The ending index (defaults to the last Record in the Store)
- * @return {Ext.data.Record[]} An array of Records
- */
- getRange : function(start, end){
- return this.data.getRange(start, end);
- },
- // private
- storeOptions : function(o){
- o = Ext.apply({}, o);
- delete o.callback;
- delete o.scope;
- this.lastOptions = o;
- },
- /**
- * <p>Loads the Record cache from the configured <tt>{@link #proxy}</tt> using the configured <tt>{@link #reader}</tt>.</p>
- * <br><p>Notes:</p><div class="mdetail-params"><ul>
- * <li><b><u>Important</u></b>: loading is asynchronous! This call will return before the new data has been
- * loaded. To perform any post-processing where information from the load call is required, specify
- * the <tt>callback</tt> function to be called, or use a {@link Ext.util.Observable#listeners a 'load' event handler}.</li>
- * <li>If using {@link Ext.PagingToolbar remote paging}, the first load call must specify the <tt>start</tt> and <tt>limit</tt>
- * properties in the <code>options.params</code> property to establish the initial position within the
- * dataset, and the number of Records to cache on each read from the Proxy.</li>
- * <li>If using {@link #remoteSort remote sorting}, the configured <code>{@link #sortInfo}</code>
- * will be automatically included with the posted parameters according to the specified
- * <code>{@link #paramNames}</code>.</li>
- * </ul></div>
- * @param {Object} options An object containing properties which control loading options:<ul>
- * <li><b><tt>params</tt></b> :Object<div class="sub-desc"><p>An object containing properties to pass as HTTP
- * parameters to a remote data source. <b>Note</b>: <code>params</code> will override any
- * <code>{@link #baseParams}</code> of the same name.</p>
- * <p>Parameters are encoded as standard HTTP parameters using {@link Ext#urlEncode}.</p></div></li>
- * <li><b><tt>callback</tt></b> : Function<div class="sub-desc"><p>A function to be called after the Records
- * have been loaded. The <tt>callback</tt> is called after the load event and is passed the following arguments:<ul>
- * <li><tt>r</tt> : Ext.data.Record[]</li>
- * <li><tt>options</tt>: Options object from the load call</li>
- * <li><tt>success</tt>: Boolean success indicator</li></ul></p></div></li>
- * <li><b><tt>scope</tt></b> : Object<div class="sub-desc"><p>Scope with which to call the callback (defaults
- * to the Store object)</p></div></li>
- * <li><b><tt>add</tt></b> : Boolean<div class="sub-desc"><p>Indicator to append loaded records rather than
- * replace the current cache. <b>Note</b>: see note for <tt>{@link #loadData}</tt></p></div></li>
- * </ul>
- * @return {Boolean} If the <i>developer</i> provided <tt>{@link #beforeload}</tt> event handler returns
- * <tt>false</tt>, the load call will abort and will return <tt>false</tt>; otherwise will return <tt>true</tt>.
- */
- load : function(options) {
- options = options || {};
- this.storeOptions(options);
- if(this.sortInfo && this.remoteSort){
- var pn = this.paramNames;
- options.params = options.params || {};
- options.params[pn.sort] = this.sortInfo.field;
- options.params[pn.dir] = this.sortInfo.direction;
- }
- try {
- return this.execute('read', null, options); // <-- null represents rs. No rs for load actions.
- } catch(e) {
- this.handleException(e);
- return false;
- }
- },
- /**
- * updateRecord Should not be used directly. This method will be called automatically if a Writer is set.
- * Listens to 'update' event.
- * @param {Object} store
- * @param {Object} record
- * @param {Object} action
- * @private
- */
- updateRecord : function(store, record, action) {
- if (action == Ext.data.Record.EDIT && this.autoSave === true && (!record.phantom || (record.phantom && record.isValid))) {
- this.save();
- }
- },
- /**
- * Should not be used directly. Store#add will call this automatically if a Writer is set
- * @param {Object} store
- * @param {Object} rs
- * @param {Object} index
- * @private
- */
- createRecords : function(store, rs, index) {
- for (var i = 0, len = rs.length; i < len; i++) {
- if (rs[i].phantom && rs[i].isValid()) {
- rs[i].markDirty(); // <-- Mark new records dirty
- this.modified.push(rs[i]); // <-- add to modified
- }
- }
- if (this.autoSave === true) {
- this.save();
- }
- },
- /**
- * Destroys a record or records. Should not be used directly. It's called by Store#remove if a Writer is set.
- * @param {Store} this
- * @param {Ext.data.Record/Ext.data.Record[]}
- * @param {Number} index
- * @private
- */
- destroyRecord : function(store, record, index) {
- if (this.modified.indexOf(record) != -1) { // <-- handled already if @cfg pruneModifiedRecords == true
- this.modified.remove(record);
- }
- if (!record.phantom) {
- this.removed.push(record);
- // since the record has already been removed from the store but the server request has not yet been executed,
- // must keep track of the last known index this record existed. If a server error occurs, the record can be
- // put back into the store. @see Store#createCallback where the record is returned when response status === false
- record.lastIndex = index;
- if (this.autoSave === true) {
- this.save();
- }
- }
- },
- /**
- * This method should generally not be used directly. This method is called internally
- * by {@link #load}, or if a Writer is set will be called automatically when {@link #add},
- * {@link #remove}, or {@link #update} events fire.
- * @param {String} action Action name ('read', 'create', 'update', or 'destroy')
- * @param {Record/Record[]} rs
- * @param {Object} options
- * @throws Error
- * @private
- */
- execute : function(action, rs, options) {
- // blow up if action not Ext.data.CREATE, READ, UPDATE, DESTROY
- if (!Ext.data.Api.isAction(action)) {
- throw new Ext.data.Api.Error('execute', action);
- }
- // make sure options has a params key
- options = Ext.applyIf(options||{}, {
- params: {}
- });
- // have to separate before-events since load has a different signature than create,destroy and save events since load does not
- // include the rs (record resultset) parameter. Capture return values from the beforeaction into doRequest flag.
- var doRequest = true;
- if (action === 'read') {
- doRequest = this.fireEvent('beforeload', this, options);
- }
- else {
- // if Writer is configured as listful, force single-recoord rs to be [{}} instead of {}
- if (this.writer.listful === true && this.restful !== true) {
- rs = (Ext.isArray(rs)) ? rs : [rs];
- }
- // if rs has just a single record, shift it off so that Writer writes data as '{}' rather than '[{}]'
- else if (Ext.isArray(rs) && rs.length == 1) {
- rs = rs.shift();
- }
- // Write the action to options.params
- if ((doRequest = this.fireEvent('beforewrite', this, action, rs, options)) !== false) {
- this.writer.write(action, options.params, rs);
- }
- }
- if (doRequest !== false) {
- // Send request to proxy.
- var params = Ext.apply({}, options.params, this.baseParams);
- if (this.writer && this.proxy.url && !this.proxy.restful && !Ext.data.Api.hasUniqueUrl(this.proxy, action)) {
- params.xaction = action;
- }
- // Note: Up until this point we've been dealing with 'action' as a key from Ext.data.Api.actions. We'll flip it now
- // and send the value into DataProxy#request, since it's the value which maps to the DataProxy#api
- this.proxy.request(Ext.data.Api.actions[action], rs, params, this.reader, this.createCallback(action, rs), this, options);
- }
- return doRequest;
- },
- /**
- * Saves all pending changes to the store. If the commensurate Ext.data.Api.actions action is not configured, then
- * the configured <code>{@link #url}</code> will be used.
- * <pre>
- * change url
- * --------------- --------------------
- * removed records Ext.data.Api.actions.destroy
- * phantom records Ext.data.Api.actions.create
- * {@link #getModifiedRecords modified records} Ext.data.Api.actions.update
- * </pre>
- * @TODO: Create extensions of Error class and send associated Record with thrown exceptions.
- * e.g.: Ext.data.DataReader.Error or Ext.data.Error or Ext.data.DataProxy.Error, etc.
- */
- save : function() {
- if (!this.writer) {
- throw new Ext.data.Store.Error('writer-undefined');
- }
- // DESTROY: First check for removed records. Records in this.removed are guaranteed non-phantoms. @see Store#remove
- if (this.removed.length) {
- this.doTransaction('destroy', this.removed);
- }
- // Check for modified records. Use a copy so Store#rejectChanges will work if server returns error.
- var rs = [].concat(this.getModifiedRecords());
- if (!rs.length) { // Bail-out if empty...
- return true;
- }
- // CREATE: Next check for phantoms within rs. splice-off and execute create.
- var phantoms = [];
- for (var i = rs.length-1; i >= 0; i--) {
- if (rs[i].phantom === true) {
- var rec = rs.splice(i, 1).shift();
- if (rec.isValid()) {
- phantoms.push(rec);
- }
- } else if (!rs[i].isValid()) { // <-- while we're here, splice-off any !isValid real records
- rs.splice(i,1);
- }
- }
- // If we have valid phantoms, create them...
- if (phantoms.length) {
- this.doTransaction('create', phantoms);
- }
- // UPDATE: And finally, if we're still here after splicing-off phantoms and !isValid real records, update the rest...
- if (rs.length) {
- this.doTransaction('update', rs);
- }
- return true;
- },
- // private. Simply wraps call to Store#execute in try/catch. Defers to Store#handleException on error. Loops if batch: false
- doTransaction : function(action, rs) {
- function transaction(records) {
- try {
- this.execute(action, records);
- } catch (e) {
- this.handleException(e);
- }
- }
- if (this.batch === false) {
- for (var i = 0, len = rs.length; i < len; i++) {
- transaction.call(this, rs[i]);
- }
- } else {
- transaction.call(this, rs);
- }
- },
- // @private callback-handler for remote CRUD actions
- // Do not override -- override loadRecords, onCreateRecords, onDestroyRecords and onUpdateRecords instead.
- createCallback : function(action, rs) {
- var actions = Ext.data.Api.actions;
- return (action == 'read') ? this.loadRecords : function(data, response, success) {
- // calls: onCreateRecords | onUpdateRecords | onDestroyRecords
- this['on' + Ext.util.Format.capitalize(action) + 'Records'](success, rs, data);
- // If success === false here, exception will have been called in DataProxy
- if (success === true) {
- this.fireEvent('write', this, action, data, response, rs);
- }
- };
- },
- // Clears records from modified array after an exception event.
- // NOTE: records are left marked dirty. Do we want to commit them even though they were not updated/realized?
- clearModified : function(rs) {
- if (Ext.isArray(rs)) {
- for (var n=rs.length-1;n>=0;n--) {
- this.modified.splice(this.modified.indexOf(rs[n]), 1);
- }
- } else {
- this.modified.splice(this.modified.indexOf(rs), 1);
- }
- },
- // remap record ids in MixedCollection after records have been realized. @see Store#onCreateRecords, @see DataReader#realize
- reMap : function(record) {
- if (Ext.isArray(record)) {
- for (var i = 0, len = record.length; i < len; i++) {
- this.reMap(record[i]);
- }
- } else {
- delete this.data.map[record._phid];
- this.data.map[record.id] = record;
- var index = this.data.keys.indexOf(record._phid);
- this.data.keys.splice(index, 1, record.id);
- delete record._phid;
- }
- },
- // @protected onCreateRecord proxy callback for create action
- onCreateRecords : function(success, rs, data) {
- if (success === true) {
- try {
- this.reader.realize(rs, data);
- this.reMap(rs);
- }
- catch (e) {
- this.handleException(e);
- if (Ext.isArray(rs)) {
- // Recurse to run back into the try {}. DataReader#realize splices-off the rs until empty.
- this.onCreateRecords(success, rs, data);
- }
- }
- }
- },
- // @protected, onUpdateRecords proxy callback for update action
- onUpdateRecords : function(success, rs, data) {
- if (success === true) {
- try {
- this.reader.update(rs, data);
- } catch (e) {
- this.handleException(e);
- if (Ext.isArray(rs)) {
- // Recurse to run back into the try {}. DataReader#update splices-off the rs until empty.
- this.onUpdateRecords(success, rs, data);
- }
- }
- }
- },
- // @protected onDestroyRecords proxy callback for destroy action
- onDestroyRecords : function(success, rs, data) {
- // splice each rec out of this.removed
- rs = (rs instanceof Ext.data.Record) ? [rs] : rs;
- for (var i=0,len=rs.length;i<len;i++) {
- this.removed.splice(this.removed.indexOf(rs[i]), 1);
- }
- if (success === false) {
- // put records back into store if remote destroy fails.
- // @TODO: Might want to let developer decide.
- for (i=rs.length-1;i>=0;i--) {
- this.insert(rs[i].lastIndex, rs[i]); // <-- lastIndex set in Store#destroyRecord
- }
- }
- },
- // protected handleException. Possibly temporary until Ext framework has an exception-handler.
- handleException : function(e) {
- // @see core/Error.js
- Ext.handleError(e);
- },
- /**
- * <p>Reloads the Record cache from the configured Proxy using the configured {@link Ext.data.Reader Reader} and
- * the options from the last load operation performed.</p>
- * <p><b>Note</b>: see the Important note in {@link #load}.</p>
- * @param {Object} options (optional) An <tt>Object</tt> containing {@link #load loading options} which may
- * override the options used in the last {@link #load} operation. See {@link #load} for details (defaults to
- * <tt>null</tt>, in which case the {@link #lastOptions} are used).
- */
- reload : function(options){
- this.load(Ext.applyIf(options||{}, this.lastOptions));
- },
- // private
- // Called as a callback by the Reader during a load operation.
- loadRecords : function(o, options, success){
- if(!o || success === false){
- if(success !== false){
- this.fireEvent('load', this, [], options);
- }
- if(options.callback){
- options.callback.call(options.scope || this, [], options, false, o);
- }
- return;
- }
- var r = o.records, t = o.totalRecords || r.length;
- if(!options || options.add !== true){
- if(this.pruneModifiedRecords){
- this.modified = [];
- }
- for(var i = 0, len = r.length; i < len; i++){
- r[i].join(this);
- }
- if(this.snapshot){
- this.data = this.snapshot;
- delete this.snapshot;
- }
- this.data.clear();
- this.data.addAll(r);
- this.totalLength = t;
- this.applySort();
- this.fireEvent('datachanged', this);
- }else{
- this.totalLength = Math.max(t, this.data.length+r.length);
- this.add(r);
- }
- this.fireEvent('load', this, r, options);
- if(options.callback){
- options.callback.call(options.scope || this, r, options, true);
- }
- },
- /**
- * Loads data from a passed data block and fires the {@link #load} event. A {@link Ext.data.Reader Reader}
- * which understands the format of the data must have been configured in the constructor.
- * @param {Object} data The data block from which to read the Records. The format of the data expected
- * is dependent on the type of {@link Ext.data.Reader Reader} that is configured and should correspond to
- * that {@link Ext.data.Reader Reader}'s <tt>{@link Ext.data.Reader#readRecords}</tt> parameter.
- * @param {Boolean} append (Optional) <tt>true</tt> to append the new Records rather the default to replace
- * the existing cache.
- * <b>Note</b>: that Records in a Store are keyed by their {@link Ext.data.Record#id id}, so added Records
- * with ids which are already present in the Store will <i>replace</i> existing Records. Only Records with
- * new, unique ids will be added.
- */
- loadData : function(o, append){
- var r = this.reader.readRecords(o);
- this.loadRecords(r, {add: append}, true);
- },
- /**
- * Gets the number of cached records.
- * <p>If using paging, this may not be the total size of the dataset. If the data object
- * used by the Reader contains the dataset size, then the {@link #getTotalCount} function returns
- * the dataset size. <b>Note</b>: see the Important note in {@link #load}.</p>
- * @return {Number} The number of Records in the Store's cache.
- */
- getCount : function(){
- return this.data.length || 0;
- },
- /**
- * Gets the total number of records in the dataset as returned by the server.
- * <p>If using paging, for this to be accurate, the data object used by the {@link #reader Reader}
- * must contain the dataset size. For remote data sources, the value for this property
- * (<tt>totalProperty</tt> for {@link Ext.data.JsonReader JsonReader},
- * <tt>totalRecords</tt> for {@link Ext.data.XmlReader XmlReader}) shall be returned by a query on the server.
- * <b>Note</b>: see the Important note in {@link #load}.</p>
- * @return {Number} The number of Records as specified in the data object passed to the Reader
- * by the Proxy.
- * <p><b>Note</b>: this value is not updated when changing the contents of the Store locally.</p>
- */
- getTotalCount : function(){
- return this.totalLength || 0;
- },
- /**
- * Returns an object describing the current sort state of this Store.
- * @return {Object} The sort state of the Store. An object with two properties:<ul>
- * <li><b>field : String<p class="sub-desc">The name of the field by which the Records are sorted.</p></li>
- * <li><b>direction : String<p class="sub-desc">The sort order, 'ASC' or 'DESC' (case-sensitive).</p></li>
- * </ul>
- * See <tt>{@link #sortInfo}</tt> for additional details.
- */
- getSortState : function(){
- return this.sortInfo;
- },
- // private
- applySort : function(){
- if(this.sortInfo && !this.remoteSort){
- var s = this.sortInfo, f = s.field;
- this.sortData(f, s.direction);
- }
- },
- // private
- sortData : function(f, direction){
- direction = direction || 'ASC';
- var st = this.fields.get(f).sortType;
- var fn = function(r1, r2){
- var v1 = st(r1.data[f]), v2 = st(r2.data[f]);
- return v1 > v2 ? 1 : (v1 < v2 ? -1 : 0);
- };
- this.data.sort(direction, fn);
- if(this.snapshot && this.snapshot != this.data){
- this.snapshot.sort(direction, fn);
- }
- },
- /**
- * Sets the default sort column and order to be used by the next {@link #load} operation.
- * @param {String} fieldName The name of the field to sort by.
- * @param {String} dir (optional) The sort order, 'ASC' or 'DESC' (case-sensitive, defaults to <tt>'ASC'</tt>)
- */
- setDefaultSort : function(field, dir){
- dir = dir ? dir.toUpperCase() : 'ASC';
- this.sortInfo = {field: field, direction: dir};
- this.sortToggle[field] = dir;
- },
- /**
- * Sort the Records.
- * If remote sorting is used, the sort is performed on the server, and the cache is reloaded. If local
- * sorting is used, the cache is sorted internally. See also {@link #remoteSort} and {@link #paramNames}.
- * @param {String} fieldName The name of the field to sort by.
- * @param {String} dir (optional) The sort order, 'ASC' or 'DESC' (case-sensitive, defaults to <tt>'ASC'</tt>)
- */
- sort : function(fieldName, dir){
- var f = this.fields.get(fieldName);
- if(!f){
- return false;
- }
- if(!dir){
- if(this.sortInfo && this.sortInfo.field == f.name){ // toggle sort dir
- dir = (this.sortToggle[f.name] || 'ASC').toggle('ASC', 'DESC');
- }else{
- dir = f.sortDir;
- }
- }
- var st = (this.sortToggle) ? this.sortToggle[f.name] : null;
- var si = (this.sortInfo) ? this.sortInfo : null;
- this.sortToggle[f.name] = dir;
- this.sortInfo = {field: f.name, direction: dir};
- if(!this.remoteSort){
- this.applySort();
- this.fireEvent('datachanged', this);
- }else{
- if (!this.load(this.lastOptions)) {
- if (st) {
- this.sortToggle[f.name] = st;
- }
- if (si) {
- this.sortInfo = si;
- }
- }
- }
- },
- /**
- * Calls the specified function for each of the {@link Ext.data.Record Records} in the cache.
- * @param {Function} fn The function to call. The {@link Ext.data.Record Record} is passed as the first parameter.
- * Returning <tt>false</tt> aborts and exits the iteration.
- * @param {Object} scope (optional) The scope in which to call the function (defaults to the {@link Ext.data.Record Record}).
- */
- each : function(fn, scope){
- this.data.each(fn, scope);
- },
- /**
- * Gets all {@link Ext.data.Record records} modified since the last commit. Modified records are
- * persisted across load operations (e.g., during paging). <b>Note</b>: deleted records are not
- * included. See also <tt>{@link #pruneModifiedRecords}</tt> and
- * {@link Ext.data.Record}<tt>{@link Ext.data.Record#markDirty markDirty}.</tt>.
- * @return {Ext.data.Record[]} An array of {@link Ext.data.Record Records} containing outstanding
- * modifications. To obtain modified fields within a modified record see
- *{@link Ext.data.Record}<tt>{@link Ext.data.Record#modified modified}.</tt>.
- */
- getModifiedRecords : function(){
- return this.modified;
- },
- // private
- createFilterFn : function(property, value, anyMatch, caseSensitive){
- if(Ext.isEmpty(value, false)){
- return false;
- }
- value = this.data.createValueMatcher(value, anyMatch, caseSensitive);
- return function(r){
- return value.test(r.data[property]);
- };
- },
- /**
- * Sums the value of <tt>property</tt> for each {@link Ext.data.Record record} between <tt>start</tt>
- * and <tt>end</tt> and returns the result.
- * @param {String} property A field in each record
- * @param {Number} start (optional) The record index to start at (defaults to <tt>0</tt>)
- * @param {Number} end (optional) The last record index to include (defaults to length - 1)
- * @return {Number} The sum
- */
- sum : function(property, start, end){
- var rs = this.data.items, v = 0;
- start = start || 0;
- end = (end || end === 0) ? end : rs.length-1;
- for(var i = start; i <= end; i++){
- v += (rs[i].data[property] || 0);
- }
- return v;
- },
- /**
- * Filter the {@link Ext.data.Record records} by a specified property.
- * @param {String} field A field on your records
- * @param {String/RegExp} value Either a string that the field should begin with, or a RegExp to test
- * against the field.
- * @param {Boolean} anyMatch (optional) <tt>true</tt> to match any part not just the beginning
- * @param {Boolean} caseSensitive (optional) <tt>true</tt> for case sensitive comparison
- */
- filter : function(property, value, anyMatch, caseSensitive){
- var fn = this.createFilterFn(property, value, anyMatch, caseSensitive);
- return fn ? this.filterBy(fn) : this.clearFilter();
- },
- /**
- * Filter by a function. The specified function will be called for each
- * Record in this Store. If the function returns <tt>true</tt> the Record is included,
- * otherwise it is filtered out.
- * @param {Function} fn The function to be called. It will be passed the following parameters:<ul>
- * <li><b>record</b> : Ext.data.Record<p class="sub-desc">The {@link Ext.data.Record record}
- * to test for filtering. Access field values using {@link Ext.data.Record#get}.</p></li>
- * <li><b>id</b> : Object<p class="sub-desc">The ID of the Record passed.</p></li>
- * </ul>
- * @param {Object} scope (optional) The scope of the function (defaults to this)
- */
- filterBy : function(fn, scope){
- this.snapshot = this.snapshot || this.data;
- this.data = this.queryBy(fn, scope||this);
- this.fireEvent('datachanged', this);
- },
- /**
- * Query the records by a specified property.
- * @param {String} field A field on your records
- * @param {String/RegExp} value Either a string that the field
- * should begin with, or a RegExp to test against the field.
- * @param {Boolean} anyMatch (optional) True to match any part not just the beginning
- * @param {Boolean} caseSensitive (optional) True for case sensitive comparison
- * @return {MixedCollection} Returns an Ext.util.MixedCollection of the matched records
- */
- query : function(property, value, anyMatch, caseSensitive){
- var fn = this.createFilterFn(property, value, anyMatch, caseSensitive);
- return fn ? this.queryBy(fn) : this.data.clone();
- },
- /**
- * Query the cached records in this Store using a filtering function. The specified function
- * will be called with each record in this Store. If the function returns <tt>true</tt> the record is
- * included in the results.
- * @param {Function} fn The function to be called. It will be passed the following parameters:<ul>
- * <li><b>record</b> : Ext.data.Record<p class="sub-desc">The {@link Ext.data.Record record}
- * to test for filtering. Access field values using {@link Ext.data.Record#get}.</p></li>
- * <li><b>id</b> : Object<p class="sub-desc">The ID of the Record passed.</p></li>
- * </ul>
- * @param {Object} scope (optional) The scope of the function (defaults to this)
- * @return {MixedCollection} Returns an Ext.util.MixedCollection of the matched records
- **/
- queryBy : function(fn, scope){
- var data = this.snapshot || this.data;
- return data.filterBy(fn, scope||this);
- },
- /**
- * Finds the index of the first matching record in this store by a specific property/value.
- * @param {String} property A property on your objects
- * @param {String/RegExp} value Either a string that the property value
- * should begin with, or a RegExp to test against the property.
- * @param {Number} startIndex (optional) The index to start searching at
- * @param {Boolean} anyMatch (optional) True to match any part of the string, not just the beginning
- * @param {Boolean} caseSensitive (optional) True for case sensitive comparison
- * @return {Number} The matched index or -1
- */
- find : function(property, value, start, anyMatch, caseSensitive){
- var fn = this.createFilterFn(property, value, anyMatch, caseSensitive);
- return fn ? this.data.findIndexBy(fn, null, start) : -1;
- },
- /**
- * Finds the index of the first matching record in this store by a specific property/value.
- * @param {String} property A property on your objects
- * @param {String/RegExp} value The value to match against
- * @param {Number} startIndex (optional) The index to start searching at
- * @return {Number} The matched index or -1
- */
- findExact: function(property, value, start){
- return this.data.findIndexBy(function(rec){
- return rec.get(property) === value;
- }, this, start);
- },
- /**
- * Find the index of the first matching Record in this Store by a function.
- * If the function returns <tt>true</tt> it is considered a match.
- * @param {Function} fn The function to be called. It will be passed the following parameters:<ul>
- * <li><b>record</b> : Ext.data.Record<p class="sub-desc">The {@link Ext.data.Record record}
- * to test for filtering. Access field values using {@link Ext.data.Record#get}.</p></li>
- * <li><b>id</b> : Object<p class="sub-desc">The ID of the Record passed.</p></li>
- * </ul>
- * @param {Object} scope (optional) The scope of the function (defaults to this)
- * @param {Number} startIndex (optional) The index to start searching at
- * @return {Number} The matched index or -1
- */
- findBy : function(fn, scope, start){
- return this.data.findIndexBy(fn, scope, start);
- },
- /**
- * Collects unique values for a particular dataIndex from this store.
- * @param {String} dataIndex The property to collect
- * @param {Boolean} allowNull (optional) Pass true to allow null, undefined or empty string values
- * @param {Boolean} bypassFilter (optional) Pass true to collect from all records, even ones which are filtered
- * @return {Array} An array of the unique values
- **/
- collect : function(dataIndex, allowNull, bypassFilter){
- var d = (bypassFilter === true && this.snapshot) ?
- this.snapshot.items : this.data.items;
- var v, sv, r = [], l = {};
- for(var i = 0, len = d.length; i < len; i++){
- v = d[i].data[dataIndex];
- sv = String(v);
- if((allowNull || !Ext.isEmpty(v)) && !l[sv]){
- l[sv] = true;
- r[r.length] = v;
- }
- }
- return r;
- },
- /**
- * Revert to a view of the Record cache with no filtering applied.
- * @param {Boolean} suppressEvent If <tt>true</tt> the filter is cleared silently without firing the
- * {@link #datachanged} event.
- */
- clearFilter : function(suppressEvent){
- if(this.isFiltered()){
- this.data = this.snapshot;
- delete this.snapshot;
- if(suppressEvent !== true){
- this.fireEvent('datachanged', this);
- }
- }
- },
- /**
- * Returns true if this store is currently filtered
- * @return {Boolean}
- */
- isFiltered : function(){
- return this.snapshot && this.snapshot != this.data;
- },
- // private
- afterEdit : function(record){
- if(this.modified.indexOf(record) == -1){
- this.modified.push(record);
- }
- this.fireEvent('update', this, record, Ext.data.Record.EDIT);
- },
- // private
- afterReject : function(record){
- this.modified.remove(record);
- this.fireEvent('update', this, record, Ext.data.Record.REJECT);
- },
- // private
- afterCommit : function(record){
- this.modified.remove(record);
- this.fireEvent('update', this, record, Ext.data.Record.COMMIT);
- },
- /**
- * Commit all Records with {@link #getModifiedRecords outstanding changes}. To handle updates for changes,
- * subscribe to the Store's {@link #update update event}, and perform updating when the third parameter is
- * Ext.data.Record.COMMIT.
- */
- commitChanges : function(){
- var m = this.modified.slice(0);
- this.modified = [];
- for(var i = 0, len = m.length; i < len; i++){
- m[i].commit();
- }
- },
- /**
- * {@link Ext.data.Record#reject Reject} outstanding changes on all {@link #getModifiedRecords modified records}.
- */
- rejectChanges : function(){
- var m = this.modified.slice(0);
- this.modified = [];
- for(var i = 0, len = m.length; i < len; i++){
- m[i].reject();
- }
- },
- // private
- onMetaChange : function(meta, rtype, o){
- this.recordType = rtype;
- this.fields = rtype.prototype.fields;
- delete this.snapshot;
- if(meta.sortInfo){
- this.sortInfo = meta.sortInfo;
- }else if(this.sortInfo && !this.fields.get(this.sortInfo.field)){
- delete this.sortInfo;
- }
- this.modified = [];
- this.fireEvent('metachange', this, this.reader.meta);
- },
- // private
- findInsertIndex : function(record){
- this.suspendEvents();
- var data = this.data.clone();
- this.data.add(record);
- this.applySort();
- var index = this.data.indexOf(record);
- this.data = data;
- this.resumeEvents();
- return index;
- },
- /**
- * Set the value for a property name in this store's {@link #baseParams}. Usage:</p><pre><code>
- myStore.setBaseParam('foo', {bar:3});
- </code></pre>
- * @param {String} name Name of the property to assign
- * @param {Mixed} value Value to assign the <tt>name</tt>d property
- **/
- setBaseParam : function (name, value){
- this.baseParams = this.baseParams || {};
- this.baseParams[name] = value;
- }
- });
- Ext.reg('store', Ext.data.Store);
- /**
- * @class Ext.data.Store.Error
- * @extends Ext.Error
- * Store Error extension.
- * @param {String} name
- */
- Ext.data.Store.Error = Ext.extend(Ext.Error, {
- name: 'Ext.data.Store'
- });
- Ext.apply(Ext.data.Store.Error.prototype, {
- lang: {
- 'writer-undefined' : 'Attempted to execute a write-action without a DataWriter installed.'
- }
- });