On Wed, Mar 31, 2010 at 3:01 PM, Eric Uhrhane <er...@google.com> wrote: > On Wed, Mar 31, 2010 at 2:40 PM, Jonas Sicking <jo...@sicking.cc> wrote: >> On Wed, Mar 31, 2010 at 1:55 AM, Robin Berjon <ro...@berjon.com> wrote: >>> On Mar 31, 2010, at 01:56 , Darin Fisher wrote: >>>> The only way to get a FileWriter at the moment is from <input >>>> type="saveas">. What is desired is a way to simulate the load of a >>>> resource with Content-Disposition: attachment that would trigger the >>>> browser's download manager. >>> >>> I don't think that <input type=saveas> is a good solution for this, for one >>> it falls back to a text input control, which is less than ideal. I think >>> that the File Writer should trigger downloads on an API call since that >>> doesn't introduce security issues that aren't already there. I'll make a >>> proposal for that. >> >> Why not simply allow FileWriters be instantiated using: >> >> x = new FileWriter; >> >> And then make every call to .write open up the save as dialog. > > You wouldn't want to prompt on every write; developers might want to > append a chunk at a time. > You could prompt on creation, if you didn't mind that being a synchronous > call. > > The reason I made an html element be the way of getting a FileWriter > was to make the normal usage pattern not involve modal dialogs popping > up in front of the user unprompted. With an inpput control, they can > choose when to interact with it, rather than having a speedbump shoved > in front of them.
So we could allow FileWriter to be created directly in addition to using <input type=saveas>. When instantiated directly any call to .write will bring up a save-as dialog. This is useful for the cases where Darin and others wanted to use content-disposition to bring up the save-as dialog. On a separate note, I have no idea how to create UI that makes the user understand what they grant when selecting a file destination using <input type=saveas>. I.e. that they are granting the web page continuous writing (but not reading?) capabilities to the specific file location. / Jonas
