Hi Stefan,
1. The second and third steps are skipped if they are not required, so
you will just see the Finish button in these cases (shp, WKT, JML are
theses cases).
2. FileDataSourceQueryChooser that register with the
DataSourceQueryChooserManager will automatically get added. The only one
caveat is that I have no way to automatically get the options panel
fields if one is defined for that type. Other than GML can you think of
any plugins that require options?
List loadChoosers =
DataSourceQueryChooserManager.get(workbenchContext.getBlackboard()).getLoadDataSourceQueryChoosers();
for (Object chooser : loadChoosers) {
if (chooser instanceof FileDataSourceQueryChooser) {
FileDataSourceQueryChooser fileChooser =
(FileDataSourceQueryChooser)chooser;
Class dataSourceClass = fileChooser.getDataSourceClass();
String description = fileChooser.getDescription();
List<String> extensions =
Arrays.asList(fileChooser.getExtensions());
DataSourceFileLoader fileLoader = new
DataSourceFileLoader(workbenchContext, null, description, extensions);
registry.createEntry(FileLoader.KEY, fileLoader);
}
}
Paul
Stefan Steiniger wrote:
> Yep.. sounds and looks interesting.
>
> but two questions/comments:
>
> - what about skiping any further dialog - e.g. if jml or shape files
> should be loaded without any reference system info necessary. Is that
> possible.
>
> - how can we integrate the external plugins that deliver functionality
> such as dxf, mif, or PostGIS support. The problem here is that
> everything needs still to be the same as previously.
>
> stefan
>
> Paul Austin schrieb:
>
>> All,
>>
>> I have now implemented what I think should be the 'Open File...' menu
>> item in the File menu which will allow uses to open files and add them
>> as layers to the current Project.
>>
>> This first screen shot shows the first page of the wizard where you can
>> select the File type (or leave it as All Files) and then select one or
>> more files to load.
>>
>>
>>
>> If All files was selected as the file filter and one or more of the file
>> extensions could be loaded by more than one file loader (e.g. *.xml can
>> be loaded by the GML Loader and FME GML Loader) then the following
>> wziard panel will be displayed when you select the Next button on the
>> previous page. This will allow you to select which loader to use for
>> each extension.
>>
>>
>>
>> If you uncheck the Use the same Settings for say *.xml you can select
>> the specific loader to use for each file as shown below.
>>
>>
>>
>> Some file loaders have options (e.g. GML loader requires a template
>> file) if the loader has options these will be displayed on the next
>> wizard page. If no loaders have options then this page will not be
>> displayed. This is where we could add in options for the SRS ID to use
>> for the loaded data set. Options that are required will not allow the
>> finish button to be selected until a value is specified.
>>
>>
>>
>> Again if you uncheck the Use same setting for all XXX then you can
>> define the options on a per file basis as shown below.
>>
>>
>>
>> This new infrastructure also handles ZIP, GZ, tar and tar.gz, files by
>> looking at the contents of the zip file and finding the appropriate file
>> loader for that type of file. You can mix and match different types of
>> file in the zip file (e.g. TIF, SHP and GML) and each file will be loaded.
>>
>> The FileLoader interface (attached) is implemented by loaders that can
>> load a file from a URI. There are implementations to wrap the file
>> DataSource and file ReferencedImageFactory implementations so they can
>> be loaded using the new framework.
>>
>> The following code fragments show how these existing classes are wrapped
>>
>> DataSourceFileLoader gmlLoader = addStandardReaderWriterFileDataSource(
>> "GML 2.0", StandardReaderWriterFileDataSource.GML.class);
>>
>> gmlLoader.addOptionField(
>> StandardReaderWriterFileDataSource.GML.INPUT_TEMPLATE_FILE_KEY,
>> "FileString", true);
>>
>> addFactory(new GraphicImageFactory(), new String[] {"wld", "bpw", "jpw",
>> "gfw"});
>> :
>>
>> private DataSourceFileLoader addStandardReaderWriterFileDataSource(
>> String description, Class readerClass) {
>> List extensions = getExtensions(readerClass);
>> if (extensions != null) {
>> DataSourceFileLoader fileLoader = new DataSourceFileLoader(
>> workbenchContext, readerClass, description, extensions);
>> registry.createEntry(FileLoader.KEY, fileLoader);
>> return fileLoader;
>> }
>> return null;
>> }
>>
>> private List getExtensions(Class readerClass) {
>> try {
>> String[] extensions =
>> ((StandardReaderWriterFileDataSource)readerClass.newInstance()).getExtensions();
>> return Arrays.asList(extensions);
>> } catch (Exception e) {
>>
>> workbenchContext.getWorkbench().getFrame().log(StringUtil.stackTrace(e));
>> return null;
>> }
>> }
>>
>> private void addFactory(ReferencedImageFactory factory, String[]
>> supportFileExtensions) {
>> if (factory.isAvailable()) {
>> ReferencedImageFactoryFileLoader loader = new
>> ReferencedImageFactoryFileLoader(
>> workbenchContext, factory, supportFileExtensions);
>> registry.createEntry(FileLoader.KEY, loader);
>> }
>> }
>>
>>
>> I'm going to bundle up a plugin so people can try this out and if they
>> like it I'll start work on getting it ready to commit.
>>
>> Paul
>>
>>
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>
>
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