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Diffstat (limited to 'includes/js/dojo/data/api/Notification.js')
| -rw-r--r-- | includes/js/dojo/data/api/Notification.js | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/includes/js/dojo/data/api/Notification.js b/includes/js/dojo/data/api/Notification.js new file mode 100644 index 0000000..72708d1 --- /dev/null +++ b/includes/js/dojo/data/api/Notification.js @@ -0,0 +1,119 @@ +if(!dojo._hasResource["dojo.data.api.Notification"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. +dojo._hasResource["dojo.data.api.Notification"] = true; +dojo.provide("dojo.data.api.Notification"); +dojo.require("dojo.data.api.Read"); + +dojo.declare("dojo.data.api.Notification", dojo.data.api.Read, { + // summary: + // This is an abstract API that data provider implementations conform to. + // This file defines functions signatures and intentionally leaves all the + // functions unimplemented. + // + // description: + // This API defines a set of APIs that all datastores that conform to the + // Notifications API must implement. In general, most stores will implement + // these APIs as no-op functions for users who wish to monitor them to be able + // to connect to then via dojo.connect(). For non-users of dojo.connect, + // they should be able to just replace the function on the store to obtain + // notifications. Both read-only and read-write stores may implement + // this feature. In the case of a read-only store, this feature makes sense if + // the store itself does internal polling to a back-end server and periodically updates + // its cache of items (deletes, adds, and updates). + // + // example: + // + // | function onSet(item, attribute, oldValue, newValue) { + // | //Do something with the information... + // | }; + // | var store = new some.newStore(); + // | dojo.connect(store, "onSet", onSet); + + getFeatures: function(){ + // summary: + // See dojo.data.api.Read.getFeatures() + return { + 'dojo.data.api.Read': true, + 'dojo.data.api.Notification': true + }; + }, + + onSet: function(/* item */ item, + /* attribute-name-string */ attribute, + /* object | array */ oldValue, + /* object | array */ newValue){ + // summary: + // This function is called any time an item is modified via setValue, setValues, unsetAttribute, etc. + // description: + // This function is called any time an item is modified via setValue, setValues, unsetAttribute, etc. + // Its purpose is to provide a hook point for those who wish to monitor actions on items in the store + // in a simple manner. The general expected usage is to dojo.connect() to the store's + // implementation and be called after the store function is called. + // + // item: + // The item being modified. + // attribute: + // The attribute being changed represented as a string name. + // oldValue: + // The old value of the attribute. In the case of single value calls, such as setValue, unsetAttribute, etc, + // this value will be generally be an atomic value of some sort (string, int, etc, object). In the case of + // multi-valued attributes, it will be an array. + // newValue: + // The new value of the attribute. In the case of single value calls, such as setValue, this value will be + // generally be an atomic value of some sort (string, int, etc, object). In the case of multi-valued attributes, + // it will be an array. In the case of unsetAttribute, the new value will be 'undefined'. + // + // returns: + // Nothing. + throw new Error('Unimplemented API: dojo.data.api.Notification.onSet'); + }, + + onNew: function(/* item */ newItem, /*object?*/ parentInfo){ + // summary: + // This function is called any time a new item is created in the store. + // It is called immediately after the store newItem processing has completed. + // description: + // This function is called any time a new item is created in the store. + // It is called immediately after the store newItem processing has completed. + // + // newItem: + // The item created. + // parentInfo: + // An optional javascript object that is passed when the item created was placed in the store + // hierarchy as a value f another item's attribute, instead of a root level item. Note that if this + // function is invoked with a value for parentInfo, then onSet is not invoked stating the attribute of + // the parent item was modified. This is to avoid getting two notification events occurring when a new item + // with a parent is created. The structure passed in is as follows: + // { + // item: someItem, //The parent item + // attribute: "attribute-name-string", //The attribute the new item was assigned to. + // oldValue: something //Whatever was the previous value for the attribute. + // //If it is a single-value attribute only, then this value will be a single value. + // //If it was a multi-valued attribute, then this will be an array of all the values minues the new one. + // newValue: something //The new value of the attribute. In the case of single value calls, such as setValue, this value will be + // //generally be an atomic value of some sort (string, int, etc, object). In the case of multi-valued attributes, + // //it will be an array. + // } + // + // returns: + // Nothing. + throw new Error('Unimplemented API: dojo.data.api.Notification.onNew'); + }, + + onDelete: function(/* item */ deletedItem){ + // summary: + // This function is called any time an item is deleted from the store. + // It is called immediately after the store deleteItem processing has completed. + // description: + // This function is called any time an item is deleted from the store. + // It is called immediately after the store deleteItem processing has completed. + // + // deletedItem: + // The item deleted. + // + // returns: + // Nothing. + throw new Error('Unimplemented API: dojo.data.api.Notification.onDelete'); + } +}); + +} |