+++ /dev/null
-if(!dojo._hasResource["dojox.data.PicasaStore"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
-dojo._hasResource["dojox.data.PicasaStore"] = true;
-dojo.provide("dojox.data.PicasaStore");
-
-dojo.require("dojo.data.util.simpleFetch");
-dojo.require("dojo.io.script");
-dojo.require("dojo.date.stamp");
-
-dojo.declare("dojox.data.PicasaStore", null, {
- constructor: function(/*Object*/args){
- // summary:
- // Initializer for the PicasaStore store.
- // description:
- // The PicasaStore is a Datastore interface to one of the basic services
- // of the Picasa service, the public photo feed. This does not provide
- // access to all the services of Picasa.
- // This store cannot do * and ? filtering as the picasa service
- // provides no interface for wildcards.
- if(args && args.label){
- this.label = args.label;
- }
- },
-
- _picasaUrl: "http://picasaweb.google.com/data/feed/api/all",
-
- _storeRef: "_S",
-
- label: "title",
-
- _assertIsItem: function(/* item */ item){
- // summary:
- // This function tests whether the item passed in is indeed an item in the store.
- // item:
- // The item to test for being contained by the store.
- if(!this.isItem(item)){
- throw new Error("dojox.data.PicasaStore: a function was passed an item argument that was not an item");
- }
- },
-
- _assertIsAttribute: function(/* attribute-name-string */ attribute){
- // summary:
- // This function tests whether the item passed in is indeed a valid 'attribute' like type for the store.
- // attribute:
- // The attribute to test for being contained by the store.
- if(typeof attribute !== "string"){
- throw new Error("dojox.data.PicasaStore: a function was passed an attribute argument that was not an attribute name string");
- }
- },
-
- getFeatures: function(){
- // summary:
- // See dojo.data.api.Read.getFeatures()
- return {
- 'dojo.data.api.Read': true
- };
- },
-
- getValue: function(item, attribute){
- // summary:
- // See dojo.data.api.Read.getValue()
- var values = this.getValues(item, attribute);
- if(values){
- return values[0];
- }
- return undefined;
- },
-
- getAttributes: function(item){
- // summary:
- // See dojo.data.api.Read.getAttributes()
- return ["id", "published", "updated", "category", "title$type", "title", "summary$type", "summary", "rights$type", "rights", "link", "author", "gphoto$id", "gphoto$name", "location"];
- },
-
- hasAttribute: function(item, attribute){
- // summary:
- // See dojo.data.api.Read.hasAttributes()
- if(this.getValue(item,attribute)){
- return true;
- }
- return false;
- },
-
- isItemLoaded: function(item){
- // summary:
- // See dojo.data.api.Read.isItemLoaded()
- return this.isItem(item);
- },
-
- loadItem: function(keywordArgs){
- // summary:
- // See dojo.data.api.Read.loadItem()
- },
-
- getLabel: function(item){
- // summary:
- // See dojo.data.api.Read.getLabel()
- return this.getValue(item,this.label);
- },
-
- getLabelAttributes: function(item){
- // summary:
- // See dojo.data.api.Read.getLabelAttributes()
- return [this.label];
- },
-
- containsValue: function(item, attribute, value){
- // summary:
- // See dojo.data.api.Read.containsValue()
- var values = this.getValues(item,attribute);
- for(var i = 0; i < values.length; i++){
- if(values[i] === value){
- return true;
- }
- }
- return false;
- },
-
- getValues: function(item, attribute){
- // summary:
- // See dojo.data.api.Read.getValue()
-
- this._assertIsItem(item);
- this._assertIsAttribute(attribute);
- if(attribute === "title"){
- return [this._unescapeHtml(item.title)];
- }else if(attribute === "author"){
- return [this._unescapeHtml(item.author[0].name)];
- }else if(attribute === "datePublished"){
- return [dojo.date.stamp.fromISOString(item.published)];
- }else if(attribute === "dateTaken"){
- return [dojo.date.stamp.fromISOString(item.date_taken)];
- }else if(attribute === "imageUrlSmall"){
- return [item.media.thumbnail[1].url];
- }else if(attribute === "imageUrl"){
- return [item.content$src];
- }else if(attribute === "imageUrlMedium"){
- return [item.media.thumbnail[2].url];
- }else if(attribute === "link"){
- return [item.link[1]];
- }else if(attribute === "tags"){
- return item.tags.split(" ");
- }else if(attribute === "description"){
- return [this._unescapeHtml(item.summary)];
- }
- return undefined;
- },
-
- isItem: function(item){
- // summary:
- // See dojo.data.api.Read.isItem()
- if(item && item[this._storeRef] === this){
- return true;
- }
- return false;
- },
-
- close: function(request){
- // summary:
- // See dojo.data.api.Read.close()
- },
-
- _fetchItems: function(request, fetchHandler, errorHandler){
- // summary:
- // Fetch picasa items that match to a query
- // request:
- // A request object
- // fetchHandler:
- // A function to call for fetched items
- // errorHandler:
- // A function to call on error
-
- if(!request.query){
- request.query={};
- }
-
- //Build up the content to send the request for.
- var content = {alt: "jsonm", pp: "1", psc: "G"};
- content['start-index'] = "1";
- if(request.query.start){
- content['start-index'] = request.query.start;
- }
- if(request.query.tags){
- content.q = request.query.tags;
- }
- if(request.query.userid){
- content.uname = request.query.userid;
- }
- if(request.query.userids){
- content.ids = request.query.userids;
- }
- if(request.query.lang){
- content.hl = request.query.lang;
- }
- if(request.count){
- content['max-results'] = request.count;
- }else{
- content['max-results'] = "20";
- }
-
- //Linking this up to Picasa is a JOY!
- var self = this;
- var handle = null;
- var myHandler = function(data){
- if(handle !== null){
- dojo.disconnect(handle);
- }
-
- //Process the items...
- fetchHandler(self._processPicasaData(data), request);
- };
- var getArgs = {
- url: this._picasaUrl,
- // preventCache: true,
- content: content,
- callbackParamName: 'callback',
- handle: myHandler
- };
- var deferred = dojo.io.script.get(getArgs);
-
- deferred.addErrback(function(error){
- dojo.disconnect(handle);
- errorHandler(error, request);
- });
- },
-
- _processPicasaData: function(data){
- var items = [];
- if(data.feed){
- items = data.feed.entry;
- //Add on the store ref so that isItem can work.
- for(var i = 0; i < items.length; i++){
- var item = items[i];
- item[this._storeRef] = this;
- }
- }
- return items;
- },
-
- _unescapeHtml: function(str){
- // summary: Utility function to un-escape XML special characters in an HTML string.
- // description: Utility function to un-escape XML special characters in an HTML string.
- // str: String.
- // The string to un-escape
- // returns: HTML String converted back to the normal text (unescaped) characters (<,>,&, ", etc,).
- //
- //TODO: Check to see if theres already compatible escape() in dojo.string or dojo.html
- str = str.replace(/&/gm, "&").replace(/</gm, "<").replace(/>/gm, ">").replace(/"/gm, "\"");
- str = str.replace(/'/gm, "'");
- return str;
- }
-});
-dojo.extend(dojox.data.PicasaStore,dojo.data.util.simpleFetch);
-
-}
projects / eow / blobdiff