Is it possible using the Dropbox JS SDK to create a JavaScript web application that is able to parse the files in a user's Dropbox? In my use case, the user has some JSON files that I would like to parse and preview in the browser. Will the filesDownload(arg) method allow for this type of application, or is it only able to download the file to the user's machine?
The download methods, such as filesDownload and sharingGetSharedLinkFile return the file content directly as a Blob, as seen in the download example.
As long as you can use a Blob to do what you want, this should be possible.
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I'm developing a web app for in-house use and I'm looking for a better way to display PDFs.
I've played around with Adobe's 'Work with Local File' example from GitHub, Adobe GitHub Example, and it works great using the file picker to display a PDF. Is it possible with Adobe's PDF Embed API to take a file located on a local file share and display the PDF?
I'm thinking I need to create a file promise but I'm not sure how to create that.
Unless you can make a network request to load the PDF, the answer is no. Browsers generally can't read from local files unless a user action actually picks the file. If your local share can be made accessible via HTTP, then you would be good to go.
Here is the situation:
Ionic 4: (cli-5.2.7)
XCode 10.3
We have a custom eReader that lives in our assets folder.
When we want to download an eBook from our server and read it, we download the file and save it using the Native File plugin.
When we start up the reader, we send it the container in which we want the reader to be created and built, and an internal url to the file resource we want to read.
After window.Ionic.WebView.convertFileSrc, the file ref looks like:
ionic://localhost/_app_file_/var/mobile/Containers/Data/Application/[APP-ID]/Library/NoCloud/[BOOK-ID]/vol-001-chapter-006.xhtml
The reader will then build the iframe and send a simple XMHttpRequest to the provided url, then place the resulting html into the iframe.
The problem is that it only works on first load of the eBook from our server
I can see the file being downloaded, and written to its own folder in the apps file system (File.dataDirectory).
When I debug the XMLHttpRequest in our eReader.js, I can see the call being made to the resource and the HTML returning to the request, which is then rendered on the page.
BUT, if I close the app, reopen it, and try to access the already-downloaded book, the XMLHttpRequest in our eReader.js returns nothing.
I can verify that the file exists at the resource location after a reload, but the XMLHttpRequest acts like it cannot find anything at the provided location.
AND, this is only on iOs. Android works as intended.
My questions is, what am I missing? Is this something to do with the iOs permissions or persistence?
Any help would be appreciated.
In my chrome app, I am using HTML5 file system to save the pdf files to sand box.Downloading is working fine.But how do i access that downloaded file path? I want to give that path as webview source.
The best way, if it works, would be to use a filesystem URL. To get this use FileEntry.toURL
These don't work on external files (i.e. files that come from chrome.fileSystem.chooseEntry and are outside the app's sandbox) but should work for files in the app's sandbox.
Note, I am referring to filesystem:// urls not file://urls, which won't work as Marc Rochkind has pointed out in his answer.
Disclaimer: I haven't tested this, but I believe it should work.
You need to get the contents of the PDF into a data URL. See my answer to this question:
Download external pdf files to chrome packaged app's file system
Is it possible to download a file that I uploaded via filepicker, in chucks? I work on a platform that doesn't allow me to download files overs a certain size programmatically, (httprequest) so I have a need to retrieve the file in chucks and reassemble them.
No we don't currently provide this functionality.
Is it possible to get Google Drive to automatically convert uploaded documents to the native format?
I know it works with manual upload (i.e. Google Drive can auto-convert files you upload via the website), but I want to avoid having to upload every file by hand.
I'd prefer to use the API, or better yet, dump the files in my ~/Google Drive folder.
Using the API, you can pass the convert=true parameter to files.insert. The uploaded file will attempt to be converted to a native Google Docs format.
Sure, see this answer. Note you can upload a text file or a csv file and set its content type to google doc or google sheets respectively, and google will attempt to convert it. I have tested this for text -> doc and it works. You will need to set the const contentType at the start of the code to one of the supported google mimetypes.