org.eclipse.ui.IEditorRegistry#getDefaultEditor ( )源码实例Demo

private String getEditorId(IFileStore file) {
	IWorkbench workbench = PlatformUI.getWorkbench();
	IEditorRegistry editorRegistry= workbench.getEditorRegistry();
	IEditorDescriptor descriptor= editorRegistry.getDefaultEditor(file.getName(), getContentType(file));

	// check the OS for in-place editor (OLE on Win32)
	if (descriptor == null && editorRegistry.isSystemInPlaceEditorAvailable(file.getName()))
		descriptor= editorRegistry.findEditor(IEditorRegistry.SYSTEM_INPLACE_EDITOR_ID);
	
	// check the OS for external editor
	if (descriptor == null && editorRegistry.isSystemExternalEditorAvailable(file.getName()))
		descriptor= editorRegistry.findEditor(IEditorRegistry.SYSTEM_EXTERNAL_EDITOR_ID);
	
	if (descriptor != null)
		return descriptor.getId();
	
	return EditorsUI.DEFAULT_TEXT_EDITOR_ID;
}
 

private String getEditorId( IFileStore file )
{
	IWorkbench workbench = window.getWorkbench( );
	IEditorRegistry editorRegistry = workbench.getEditorRegistry( );
	IEditorDescriptor descriptor = editorRegistry.getDefaultEditor( file.getName( ),
			getContentType( file ) );

	// check the OS for in-place editor (OLE on Win32)
	if ( descriptor == null
			&& editorRegistry.isSystemInPlaceEditorAvailable( file.getName( ) ) )
	{
		descriptor = editorRegistry.findEditor( IEditorRegistry.SYSTEM_INPLACE_EDITOR_ID );
	}

	// check the OS for external editor
	if ( descriptor == null
			&& editorRegistry.isSystemExternalEditorAvailable( file.getName( ) ) )
	{
		descriptor = editorRegistry.findEditor( IEditorRegistry.SYSTEM_EXTERNAL_EDITOR_ID );
	}

	return ( descriptor == null ) ? "" : descriptor.getId( ); //$NON-NLS-1$
}
 

@Override
protected void openFiles(PythonpathZipChildTreeNode[] pythonPathFilesSelected) {
    for (PythonpathZipChildTreeNode n : pythonPathFilesSelected) {
        try {
            if (PythonPathHelper.isValidSourceFile(n.zipPath)) {
                new PyOpenAction().run(new ItemPointer(n.zipStructure.file, new Location(), new Location(), null,
                        n.zipPath));
            } else {
                IEditorRegistry editorReg = PlatformUI.getWorkbench().getEditorRegistry();
                IEditorDescriptor defaultEditor = editorReg.getDefaultEditor(n.zipPath);
                PydevZipFileStorage storage = new PydevZipFileStorage(n.zipStructure.file, n.zipPath);
                PydevZipFileEditorInput input = new PydevZipFileEditorInput(storage);

                if (defaultEditor != null) {
                    IDE.openEditor(page, input, defaultEditor.getId());
                } else {
                    IDE.openEditor(page, input, EditorsUI.DEFAULT_TEXT_EDITOR_ID);
                }
            }
        } catch (PartInitException e) {
            Log.log(e);
        }
    }
}
 

private String getEditorId(String fileName) {
	if (fileName.endsWith("xml")) { //$NON-NLS-1$
		//if file type is .xml, return the associated XML editor
		IEditorRegistry editorReg = PlatformUI.getWorkbench().getEditorRegistry();
		IEditorDescriptor desc = editorReg.getDefaultEditor(fileName, Platform.getContentTypeManager().findContentTypeFor(fileName));
		if (desc != null) {
			return desc.getId();
		}
	}
	//use eclipse default text editor for all other files
	return IDEWorkbenchPlugin.DEFAULT_TEXT_EDITOR_ID;
}
 

private static String getEditorId(File file) {
    IWorkbench workbench = PlatformUI.getWorkbench();
    IEditorRegistry editorRegistry = workbench.getEditorRegistry();
    IEditorDescriptor descriptor = editorRegistry.getDefaultEditor(file.getName(), getContentType(file));
    if (descriptor != null) {
        return descriptor.getId();
    }
    return EditorsUI.DEFAULT_TEXT_EDITOR_ID;
}
 

/**
 * @param filePath
 *            TODO: we should really make this into a utility function, and have the Ruble::Editor.open method use
 *            it. But I am giving up for now because Eclipse plugin dependencies drive me crazy!
 */
private void openEditorForFile(String filePath)
{
	File file = new File(filePath);
	// Process an existing file.
	if (file.exists() && file.isFile())
	{
		Path path = new Path(filePath);
		IFile fileForLocation = ResourcesPlugin.getWorkspace().getRoot().getFileForLocation(path);
		IEditorRegistry editorRegistry = PlatformUI.getWorkbench().getEditorRegistry();
		IEditorDescriptor editorDescriptor = null;
		if (fileForLocation == null)
		{
			IContentType contentType = Platform.getContentTypeManager().findContentTypeFor(filePath);
			editorDescriptor = editorRegistry.getDefaultEditor(filePath, contentType);
		}
		else
		{
			editorDescriptor = editorRegistry.getDefaultEditor(filePath);
		}
		String editorId = (editorDescriptor == null) ? "com.aptana.editor.text" : editorDescriptor.getId(); //$NON-NLS-1$
		try
		{
			IDE.openEditor(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage(), file.toURI(),
					editorId, true);
		}
		catch (PartInitException e)
		{
			IdeLog.logError(UIPlugin.getDefault(), e);
		}
	}
}
 

protected IEditorDescriptor getEditorDescriptor()
{
	IEditorRegistry editorReg = PlatformUI.getWorkbench().getEditorRegistry();
	if (uri.getPath() == null || uri.getPath().equals("/") || uri.getPath().trim().equals("")) //$NON-NLS-1$ //$NON-NLS-2$
	{
		return null;
	}
	IPath path = new Path(uri.getPath());
	return editorReg.getDefaultEditor(path.lastSegment());
}
 

private IEditorDescriptor getEditorDescriptor( IEditorInput input,
		boolean determineContentType )
{
	if ( input == null )
	{
		throw new IllegalArgumentException( );
	}
	IContentType contentType = Platform.getContentTypeManager( )
			.findContentTypeFor( input.getName( ) );
	IEditorRegistry editorReg = PlatformUI.getWorkbench( )
			.getEditorRegistry( );
	return editorReg.getDefaultEditor( input.getName( ), contentType );
}