Stefan,
I can see the need for two approaches to adding layers, both of them
provide a simple approach to loading data
1. Open File..
* This is what I'm currently working on
* Behaves like any Open File.. menu item/toolbar button in MS
Word and other apps
* Only works with file based data sets
* Lets the user select one or more files to add as layers and
to have a filter to only view files of certain types
* If a particular type of file has options or if there are a
couple of choices of loaders to display a second dialog will
be displayed to accept those options
* Will work for imagery, vector layers, compressed files
(containing 1 or more file)
2. Add Layer...
1. Wizard approach as shown in your screen shot, provides a
slick approach for novice and advanced users
2. Works with any type of layer from files, databases to Web
Services
3. I'll let someone else tackle this one
For the Open File.. plugin there will be an interface FileLoader that
each loader of files will implement, the interface will contain methods
to get the file extensions, description, open a file and get the
options. I have all this working except the options part.
I have defined two implementations of FileLoader, one to work with
existing DataSource implementations (e.g. SHP, WKT, GML, JML, FME) and
another to work with ReferencedImageFactories (e.g. jpg, ecw, mrsid) so
there is minimal work to implement this new approach.
I'm going to start setting up a daily build of my plugins so I can share
what I've done for review.
I like the ideas of the tabs to display things other than layers, the
big one I think we need is the concept of a Project Catalogue that lists
the sources of data that are loaded as part of a project (e.g. shp
files, databases, wms servers etc). From this list a user would be able
to say navigate a postgres database select a table and say add this as a
layer to my current view.
Paul
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