G Suite Developers Blog: Sharing and previewing Google Docs in Socialwok: Google Data APIs

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Sharing and previewing Google Docs in Socialwok: Google Data APIs

April 9, 2010

Editor's note:Navin Kumar is CTO and co-founder of Socialwok, a feed-based group collaboration application for enterprises that integrates with Google Apps. With Socialwok, Google Apps users can create their own private social network to share Google Docs, Calendars and Spreadsheets with their coworkers. Navin and his team built Socialwok on Google App Engine for Java, Google Web Toolkit and Google GData APIs. Socialwok will be at the Google IO sandbox May 19 - 20, 2010.http://www.socialwok.com/tourSharing and Previewing Google Docs in feedsintegrated with the workflowright inside Gmail

Uploading a Microsoft Powerpoint file for sharing using Google Docs

Successful posting of the Google Presentation shared in a feed

Previewing the Google Presentation from the Socialwok web using the Google Data APIUsing Google Docs viewer to preview Google Docs, PDF, PPT, XLS in Socialwok Desktop and Mobile Webrecent release

Preview of a shared pdf document from Socialwok's desktop web application using the Google Docs ViewerGoogle Docs supported formats

Preview of a shared pdf document using Google Docs viewer from Socialwok's HTML 5 mobile web pageSharing Google Docs using the Google Data APIsEntity currentUser = (Entity) httpRequest.getSession()
.getAttribute("userObject");hereQuery query = new Query("GoogleAccount", currentUser.getKey());
Entity googleAccount = dataService.prepare(query).asSingleEntity();
GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
oauthParameters.setOAuthConsumerKey(
oauthProps.getProperty("google.consumerKey"));
oauthParameters.setOAuthConsumerSecret(
oauthProps.getProperty("google.consumerSecret"));
oauthParameters.setOAuthToken(
(String) googleAccount.getProperty("oauthToken"));
oauthParameters.setOAuthTokenSecret(
(String) googleAccount.getProperty("oauthSecret"));MediaStreamSourceDocsService service = new DocsService("Socialwok-v1");
service.setOAuthCredentials(oauthParameters,signer);

MediaStreamSource streamSource = new MediaStreamSource(fileInputStream,
contentType);
streamSource.setName(filename);
DocumentListEntry inserted = service.insert( new URL(
"http://docs.google.com/feeds/default/private/full/?convert="+
doConvert), DocumentListEntry.class, streamSource);convertPreviewing Google Docs using the Google Data APIshttps://docs.google.com/a/socialwok.com/View?docid=0Adnk...dkZmNoOTIyNQhttps://docs.google.com/a/socialwok.com/Doc?docid=0Adnk...dkZmNoOTIyNQ

Get the Google Docs entry from the datastore.

Entity fileAttachment = datastoreService.get(attachmentKey);
String entryId = fileAttachment.getProperty("fileId");

Get the Google Docs entry from the Google Docs GData Service.

URL entryUrl = new URL(entryId);
DocumentListEntry docEntry = service.getEntry(entryUrl,
    DocumentListEntry.class);

Get the document link from the Google Docs Entry

String docLink = docEntry.getDocumentLink().getHref();

Convert the link to the viewer.

if (docEntry instanceof DocumentEntry) {
    docLink = docLink.replace("/Doc","/View");
}

Document Type

Action

URL

Document

Edit

https://docs.google.com/a/<domain>/Doc?docid=...

Dcument

View

https://docs.google.com/a/<domain>/View?docid=...

Presentation

Edit

https://docs.google.com/a/<domain>/present/edit?id=...

Presentation

View

https://docs.google.com/a/<domain>/present/view?id=...

Spreadsheet

Edit

https://spreadsheets.google.com/a/<domain>/ccc?key=...

Spreadsheet

View

https://spreadsheets.google.com/a/<domain>/lv?key=...

Previewing PDF, PPT, and XLS files using the Google Document Viewerhttp://docs.google.com/viewerTechnical Documentation - Instructions for building your own URLs
All viewer URLs should use the path http://docs.google.com/viewer . This path accepts two parameters:
url : The URL of the document to view. This should be URL-encoded.
embedded : If set to true , the viewer will use an embedded mode interface.

For example, if you wanted to view the PDF at
http://labs.google.com/papers/bigtable-osdi06.pdf,
you would use the URL:
http://docs.google.com/viewer?url=http%3A%2F%2Flabs.google.com%2Fpapers%2Fbigtable-osdi06.pdfembeddedhttp://docs.google.com/viewer?url=http%3A%2F%2Flabs.google.com%2Fpapers%2Fbigtable-osdi06.pdf&embedded=true<IFRAME><iframe src="">http://docs.google.com/viewer?url=http%3A%2F%2Flabs.google.com%2Fpapers%2Fbigtable-osdi06.pdf&embedded=true" style="width:600px; height:500px;" frameborder="0"></iframe>Frameimport com.google.gwt.user.client.ui.Frame;
...
Frame viewerFrame = new Frame();
viewerFrame.setUrl("http://docs.google.com/viewer?url=http%3A%2F%2Flabs.google.com%2Fpapers%2Fbigtable-osdi06.pdf&embedded=true");
viewerFrame.setHeight("500px");
viewerFrame.setWidth("600px");
containerWidget.add(viewerFrame);Google Docs blogExtending Socialwok using our APIs. Meet Socialwok at Google IOhttp://blog.socialwok.cominfo@socialwok.comDeveloper Sandboxinfo@socialwok.comBy Navin Kumar, Socialwok