How gmail handles file attachment? - file-io

When I select a file to attach in gmail compose screen, It automatically uploads the file to server without page refresh. I looked at the html source code via FireBug and have not seen a n iframe. How do they upload attachments?
Thanks.

There's an example and small write-up here.

Related

How do I add a link inside a PDF document that opens the same PDF in a user's default browser?

A client has asked that I include a "View in browser" link to a pdf attached to an email. This should open the same PDF in the user's default web browser. I have a PDF editor (PDFescape Desktop) that I can successfully use to add links to webpages, and it seems capable of opening files, and even executing javascript, though I've never tried it (I am proficient in JS though so that's an option if anyone has any ideas).
The only thing I can think of is to host the PDF somewhere and then link to it's location, but I'd rather not use a third party server if I can help it.
Is there any way to reference a link in a PDF to the same PDF the link exists in?

How to handle pdf files from server response?

I am working on React-Native mobile app and I need to handle pdf file coming from the server. The idea is when the user clicks on button, a request to the server is made and a pdf file is returned. My question is how to download and parse this file and show it to the user?
You can do it in app BUT you are going to have a lot of pain, especially with android devices.
My advice is using the Linking api and open a webbrowser:
https://facebook.github.io/react-native/docs/linking
The idea is to check if your url contains a .pdf. You can use a mix of:
https://lodash.com/docs/#includes
https://lodash.com/docs/#filter
https://lodash.com/docs/#split
When you are sure that your url is a pdf, you can use:
Linking.openURL(url);

Opening a saved pdf on client

I am exporting crytsal report to pdf format and saving the pdf on azure cloud. This code is written in web api. I am also able to download the pdf on client. Is there any way with which I can open this saved pdf file on client side by either using server side code or using jQuery. I just want to keep the file open for the user to view.
Maybe you can have a link point to the PDF file address with response header "response-content-disposition": "inline; filename=this.pdf", "response-content-type": "application/pdf". Then I think the browser will launch proper PDF plugin to show it.

JavaFX WebVIew - PDF on popup window

I have posted some other smaller questions regarding the problem I describe below and got some feedback but now I will try to explain it in more depth hoping to get through the problem.
I built a desktop application using JavaFX 2.2 which uses a WebEngine to access a website built using Oracle ADF Pages. The application tracks the users actions on the pages and stores data to a database. All fine so far until the point where I need show a PDF file on a user click.
On the actual website the user clicks a button and a new popup window opens up that displays the PDF.
My problem is that due to the lack of PDF support in JavaFX I cannot display the pdf. The actual link to the PDF is dynamic and it doesn't have a .pdf at the end of it so I can't use the actual URL to send it to an external bowser or something to display it. Additionally the connection is secure so I can't open the URL with Chrome for example.
Possible solutions I thought about are to read the binary data of the response from WebView and create the PDF file locally and then open it using Adobe of Chrome or something. Is that possible at all?
Another solution I thought about (while I am writing this question) is maybe to open the URL which the users default browser but how can I go about sending the secure connection cookie from the application to the browser.
Is any of the above even possible? Am I missing something?
Any help, clues, links, ideas would be very much appreciated.
Thanks
I think the best way to do what you want is to download the PDF and display it locally.
Downloading using WebView sounds like it could work but I'm not familiar with the user experience. As an alternative try using curl or wget. You can pass in the authorization cookie to those tools and use them to download the file

How to upload file from my iphone application to user own dropbox?

I had created an iphone application witch can generate a pdf file when the user use the application.
how can the user have the option to sent the pdf file to his own dropbox?
I had tryed with dropbox examples: where i can make an api and upload to my own dropbox.
But it's not what i want.
I want my application to do so: when the user generates a pdf file, so the login box of dropbox apear so he can log in and upload the file automaticaly to his own dropbox.
I have google it, but i did't get any examples including this solution.
Please help me if you can.
Have you looked at this blog post that i think describes what you are looking for.
http://www.drdobbs.com/tools/working-with-dropbox/232600482?pgno=1