GNIP 23 Add GeoRSS Layers such as Picasa and Youtube Feeds

GNIP 23 - Add GeoRSS Layers such as Picasa and Youtube Feeds

Overview

Add functionality to display GeoRSS feeds such as Picasa and Youtube as layers on a map.

##Pull Requests https://github.com/opengeo/gxp/pull/161

Proposed by

Matt Bertrand

Assigned to Release

TBD.

State

Generic GeoRSS feed source: FeedSource.js - extends LayerSource

Picasa: PicasaFeedSource.js - extends FeedSource, includes custom format.

Youtube: YoutubeFeedSource.js - extends FeedSource, includes custom format.

FeedSourceDialog - UI for adding feeds, includes styling options.

Motivation

This feature was present on the original version of AfricaMap and needed to be available in WorldMap.

Proposal

• Created a new generic GXP extension of LayerSource - FeedSource - that connects to the user submitted URL, and prepares the feed for display via OpenLayers.Layer.WFS and OpenLayers.Format.GeoRSS. Created specific LayerSource extensions for Youtube and Picasa in order to customize their display via 'createFeatureFromItem' (to display a thumbnail for each point and when clicked play a video or enlarge a photo for example).

• Created a widget for users to enter the GeoRSS URL, type (generic, Youtube, Picasa), and perhaps keywords.