Re: Open a local file with GWT

2009-04-14 Thread Arun

HI,

i am new to GWT, I have similar query. I want to open a file which is
place somewhere in server file system (i.e. a directory on server
contains some directory and files in it). I have to represent it in
tree structure and display the file on click of leaf Node.

I am paused at opening a file on click event. I want to open it in a
widget ( every time a new leaf node click on tree a file would be
opened opened in same window/widget replacing the old one).

could any one tell me what approach i should follow?

any link or suggestions are appreciated.

thanks in advance.

--arun.

On Apr 11, 12:54 am, ffs1985 ffs1...@gmail.com wrote:
 I tried adding a button when the callback success and on click event
 of that button, call to window.open(path,_blank,). this didn't
 work, I think that the thing is that the browser doesn't know how toopenthat 
 path. The thing I don't understand is why if Iopena new
 tab on firefox or I Explorer or Chrome wirks without a problem.

 Maybe another solution is not to call a rpc to download thefileand
 instead of that make something like an old servlet that make a call to
 download browser. I've trying this thing works since a lot of time and
 I still didn't find a solution.

 I hope someone could help me with this,

 Thanks,
 Federico

 On Apr 7, 10:13 am, Jason Essington jason.essing...@gmail.com wrote:

  O.K.

  1) what is pdfLink? is that supposed to be link?
  2) if you have any kind of Popup blocker, attempting toopena window  
  from the callback will fail. if you want toopena window, it has to  
  happen as a direct result of a user action (onClick, etc)
  3) if link is a path to a filesystemfileare you sure it is correct?  
  (this is sneaky, but just might work)

  4) Technically not causing a problem but, use generics.

  AsyncCallbackString cb = new AsyncCallbackString{
     public void onSuccess(String result) ...

  }

  -jason

  On Apr 7, 2009, at 5:04 AM,ffs1985wrote:

   Hi I'm trying to make a function that let the user download afile
   from my application and see it. I could copy thefilefrom server to a
   local root but when I've tried toopenit, does it work on hosted mode
   but in web mode fails always, no matter what browser I try(IE 7,
   Firefox and Chrome).
   My code is the next one:

   private void openDocument(String documentName) {
              final ManagerExportAsync manejador = 
   ManagerExport.Util.getInstance
   ();
              AsyncCallback callback = new AsyncCallback(){
                      String link;
                      public void onSuccess(final Object result) {
                                link = (String)result;
                                Window.open(pdfLink,_blank,);
                      }
                      public void onFailure(Throwable caught){}
                      };

              manejador.openDocument(User,userId, documentName,callback);
      }

   The String link result is something like this file///:C:/test.jpg
   I don't know what it's wrong. I read somewhere that the problem could
   be that I'm calling the Window.openinside the callback but I really
   don't know what is wrong coul someone give me a hand?

   Any suggestions?
   Thanks!
   Federico.
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Re: Open a local file with GWT

2009-04-14 Thread Jeff Chimene

On Mon, Apr 13, 2009 at 11:31 PM, Arun arun.r...@gmail.com wrote:

 HI,

 i am new to GWT, I have similar query. I want to open a file which is
 place somewhere in server file system (i.e. a directory on server
 contains some directory and files in it). I have to represent it in
 tree structure and display the file on click of leaf Node.

 I am paused at opening a file on click event. I want to open it in a
 widget ( every time a new leaf node click on tree a file would be
 opened opened in same window/widget replacing the old one).

 could any one tell me what approach i should follow?

There may be some Java RPC stuff that will do this for you, if you
have Java available on the server.

If your server is Apache based and allows Index (or the equivilent
for another server technology), then you could parse the HTML output
from a CGI get of the requisite directory.

Otherwise, you'll need a server-side process to accept a file name
request, perform the file lookup and return the results to your
client.

Just like Javascript, there's nothing inherent in GWT that performs
server side directory traversal.

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Re: Open a local file with GWT

2009-04-10 Thread ffs1985

I tried adding a button when the callback success and on click event
of that button, call to window.open(path,_blank,). this didn't
work, I think that the thing is that the browser doesn't know how to
open that path. The thing I don't understand is why if I open a new
tab on firefox or I Explorer or Chrome wirks without a problem.

Maybe another solution is not to call a rpc to download the file and
instead of that make something like an old servlet that make a call to
download browser. I've trying this thing works since a lot of time and
I still didn't find a solution.

I hope someone could help me with this,

Thanks,
Federico

On Apr 7, 10:13 am, Jason Essington jason.essing...@gmail.com wrote:
 O.K.

 1) what is pdfLink? is that supposed to be link?
 2) if you have any kind of Popup blocker, attempting to open a window  
 from the callback will fail. if you want to open a window, it has to  
 happen as a direct result of a user action (onClick, etc)
 3) if link is a path to a filesystem file are you sure it is correct?  
 (this is sneaky, but just might work)

 4) Technically not causing a problem but, use generics.

 AsyncCallbackString cb = new AsyncCallbackString{
    public void onSuccess(String result) ...

 }

 -jason

 On Apr 7, 2009, at 5:04 AM,ffs1985wrote:



  Hi I'm trying to make a function that let the user download a file
  from my application and see it. I could copy the file from server to a
  local root but when I've tried to open it, does it work on hosted mode
  but in web mode fails always, no matter what browser I try(IE 7,
  Firefox and Chrome).
  My code is the next one:

  private void openDocument(String documentName) {
             final ManagerExportAsync manejador = 
  ManagerExport.Util.getInstance
  ();
             AsyncCallback callback = new AsyncCallback(){
                     String link;
                     public void onSuccess(final Object result) {
                               link = (String)result;
                               Window.open(pdfLink,_blank,);
                     }
                     public void onFailure(Throwable caught){}
                     };

             manejador.openDocument(User,userId, documentName,callback);
     }

  The String link result is something like this file///:C:/test.jpg
  I don't know what it's wrong. I read somewhere that the problem could
  be that I'm calling the Window.open inside the callback but I really
  don't know what is wrong coul someone give me a hand?

  Any suggestions?
  Thanks!
  Federico.
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Re: Open a local file with GWT

2009-04-08 Thread alex.d

It's actually the same thing - don't you think? If you can do smth.
like Window.open(file:///C:\mycreditcard-number.txt) then you also
can go through it though you have full access to popup's Window and
Document objects. But may be i'm misunderstanding smth. here
completely.

On 8 Apr., 06:37, ffs1985 ffs1...@gmail.com wrote:
 I'm not trying to read files from filesystem from plain javascript, I
 want to open a new browsers window with a local url. The browser
 should decide how he will open this file.

 On Apr 7, 8:56 am, alex.d alex.dukhov...@googlemail.com wrote:

  You CAN'T read files from filesystem from plain javascript. Applets or
  Gears are a way to go. Another way is that user just opens your file
  instead of downloading it ;-)

  On 7 Apr., 13:04,ffs1985ffs1...@gmail.com wrote:

   Hi I'm trying to make a function that let the user download a file
   from my application and see it. I could copy the file from server to a
   local root but when I've tried to open it, does it work on hosted mode
   but in web mode fails always, no matter what browser I try(IE 7,
   Firefox and Chrome).
   My code is the next one:

   private void openDocument(String documentName) {
                   final ManagerExportAsync manejador = 
   ManagerExport.Util.getInstance
   ();
                   AsyncCallback callback = new AsyncCallback(){
                           String link;
                           public void onSuccess(final Object result) {
                                     link = (String)result;
                                     Window.open(pdfLink,_blank,);
                           }
                           public void onFailure(Throwable caught){}
                           };

                   manejador.openDocument(User,userId, 
   documentName,callback);
           }

   The String link result is something like this file///:C:/test.jpg
   I don't know what it's wrong. I read somewhere that the problem could
   be that I'm calling the Window.open inside the callback but I really
   don't know what is wrong coul someone give me a hand?

   Any suggestions?
   Thanks!
   Federico.


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Open a local file with GWT

2009-04-07 Thread ffs1985

Hi I'm trying to make a function that let the user download a file
from my application and see it. I could copy the file from server to a
local root but when I've tried to open it, does it work on hosted mode
but in web mode fails always, no matter what browser I try(IE 7,
Firefox and Chrome).
My code is the next one:

private void openDocument(String documentName) {
final ManagerExportAsync manejador = 
ManagerExport.Util.getInstance
();
AsyncCallback callback = new AsyncCallback(){
String link;
public void onSuccess(final Object result) {
  link = (String)result;
  Window.open(pdfLink,_blank,);
}
public void onFailure(Throwable caught){}
};

manejador.openDocument(User,userId, documentName,callback);
}

The String link result is something like this file///:C:/test.jpg
I don't know what it's wrong. I read somewhere that the problem could
be that I'm calling the Window.open inside the callback but I really
don't know what is wrong coul someone give me a hand?

Any suggestions?
Thanks!
Federico.
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Re: Open a local file with GWT

2009-04-07 Thread Jason Essington

O.K.

1) what is pdfLink? is that supposed to be link?
2) if you have any kind of Popup blocker, attempting to open a window  
from the callback will fail. if you want to open a window, it has to  
happen as a direct result of a user action (onClick, etc)
3) if link is a path to a filesystem file are you sure it is correct?  
(this is sneaky, but just might work)

4) Technically not causing a problem but, use generics.

AsyncCallbackString cb = new AsyncCallbackString{
   public void onSuccess(String result) ...
}

-jason

On Apr 7, 2009, at 5:04 AM, ffs1985 wrote:


 Hi I'm trying to make a function that let the user download a file
 from my application and see it. I could copy the file from server to a
 local root but when I've tried to open it, does it work on hosted mode
 but in web mode fails always, no matter what browser I try(IE 7,
 Firefox and Chrome).
 My code is the next one:

 private void openDocument(String documentName) {
   final ManagerExportAsync manejador = 
 ManagerExport.Util.getInstance
 ();
   AsyncCallback callback = new AsyncCallback(){
   String link;
   public void onSuccess(final Object result) {
 link = (String)result;
 Window.open(pdfLink,_blank,);
   }
   public void onFailure(Throwable caught){}
   };

   manejador.openDocument(User,userId, documentName,callback);
   }

 The String link result is something like this file///:C:/test.jpg
 I don't know what it's wrong. I read somewhere that the problem could
 be that I'm calling the Window.open inside the callback but I really
 don't know what is wrong coul someone give me a hand?

 Any suggestions?
 Thanks!
 Federico.
 


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Re: Open a local file with GWT

2009-04-07 Thread ffs1985

Hi sorry, here is the thing, inside my application an user could
upload documents. Then in some other time if he wants to see any of
this documents he select it from a table and click on a view button on
the selected row. There the AsyncCallback that I've wrote is called,
this makes a local copy of the file in the machine and returns the
path where this local copy was saved.
So now that i wrote some context, I will try to give more information:
1) pdfLink is the path were that local copy of the document is saved.
2) Yes but the thing is that I can't do it outside the callback
because I must be sure that the file is already created and also the
callback is what returns to me that local url where the file is.
Unless I sincronize the asyncronic call but I don't know how to do
that.
3) I'm sure that the link its correct because just for be sure i test
to show it in an alert message and it's ok.
4) I will try with generics but I don't think it's the problem because
this should work on previous versions that doesn't support java 5.

Thanks for the help, any suggestions will be very helpful
Federico.

On Apr 7, 10:13 am, Jason Essington jason.essing...@gmail.com wrote:
 O.K.

 1) what is pdfLink? is that supposed to be link?
 2) if you have any kind of Popup blocker, attempting to open a window  
 from the callback will fail. if you want to open a window, it has to  
 happen as a direct result of a user action (onClick, etc)
 3) if link is a path to a filesystem file are you sure it is correct?  
 (this is sneaky, but just might work)

 4) Technically not causing a problem but, use generics.

 AsyncCallbackString cb = new AsyncCallbackString{
    public void onSuccess(String result) ...

 }

 -jason

 On Apr 7, 2009, at 5:04 AM,ffs1985wrote:



  Hi I'm trying to make a function that let the user download a file
  from my application and see it. I could copy the file from server to a
  local root but when I've tried to open it, does it work on hosted mode
  but in web mode fails always, no matter what browser I try(IE 7,
  Firefox and Chrome).
  My code is the next one:

  private void openDocument(String documentName) {
             final ManagerExportAsync manejador = 
  ManagerExport.Util.getInstance
  ();
             AsyncCallback callback = new AsyncCallback(){
                     String link;
                     public void onSuccess(final Object result) {
                               link = (String)result;
                               Window.open(pdfLink,_blank,);
                     }
                     public void onFailure(Throwable caught){}
                     };

             manejador.openDocument(User,userId, documentName,callback);
     }

  The String link result is something like this file///:C:/test.jpg
  I don't know what it's wrong. I read somewhere that the problem could
  be that I'm calling the Window.open inside the callback but I really
  don't know what is wrong coul someone give me a hand?

  Any suggestions?
  Thanks!
  Federico.
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Re: Open a local file with GWT

2009-04-07 Thread Vitali Lovich
1) That's the local copy on the remote server, right?
2) You could always be sneaky :D.  I wonder if a Button.click() would bypass
the blocker - my guess being now as that would be a flaw in the
popup-blocker.  One way though would be to do something like in the async
callback, display some kind of clickable message on the screen informing the
user it's ready - they hit ok, you display the doc, bypassing the
adblocker.  And you should know, at least with IE  FF, whether or not it's
a popup-blocker issue as the information bar should appear.
3).  I think he meant can you actually hit the file by entering the address
in the browser (not if the string looked OK).
4)  Like he said, it's not the issue - just cleaner programming style.

On Wed, Apr 8, 2009 at 12:27 AM, ffs1985 ffs1...@gmail.com wrote:


 Hi sorry, here is the thing, inside my application an user could
 upload documents. Then in some other time if he wants to see any of
 this documents he select it from a table and click on a view button on
 the selected row. There the AsyncCallback that I've wrote is called,
 this makes a local copy of the file in the machine and returns the
 path where this local copy was saved.
 So now that i wrote some context, I will try to give more information:
 1) pdfLink is the path were that local copy of the document is saved.
 2) Yes but the thing is that I can't do it outside the callback
 because I must be sure that the file is already created and also the
 callback is what returns to me that local url where the file is.
 Unless I sincronize the asyncronic call but I don't know how to do
 that.
 3) I'm sure that the link its correct because just for be sure i test
 to show it in an alert message and it's ok.
 4) I will try with generics but I don't think it's the problem because
 this should work on previous versions that doesn't support java 5.

 Thanks for the help, any suggestions will be very helpful
 Federico.

 On Apr 7, 10:13 am, Jason Essington jason.essing...@gmail.com wrote:
  O.K.
 
  1) what is pdfLink? is that supposed to be link?
  2) if you have any kind of Popup blocker, attempting to open a window
  from the callback will fail. if you want to open a window, it has to
  happen as a direct result of a user action (onClick, etc)
  3) if link is a path to a filesystem file are you sure it is correct?
  (this is sneaky, but just might work)
 
  4) Technically not causing a problem but, use generics.
 
  AsyncCallbackString cb = new AsyncCallbackString{
 public void onSuccess(String result) ...
 
  }
 
  -jason
 
  On Apr 7, 2009, at 5:04 AM,ffs1985wrote:
 
 
 
   Hi I'm trying to make a function that let the user download a file
   from my application and see it. I could copy the file from server to a
   local root but when I've tried to open it, does it work on hosted mode
   but in web mode fails always, no matter what browser I try(IE 7,
   Firefox and Chrome).
   My code is the next one:
 
   private void openDocument(String documentName) {
  final ManagerExportAsync manejador =
 ManagerExport.Util.getInstance
   ();
  AsyncCallback callback = new AsyncCallback(){
  String link;
  public void onSuccess(final Object result) {
link = (String)result;
Window.open(pdfLink,_blank,);
  }
  public void onFailure(Throwable caught){}
  };
 
  manejador.openDocument(User,userId,
 documentName,callback);
  }
 
   The String link result is something like this file///:C:/test.jpg
   I don't know what it's wrong. I read somewhere that the problem could
   be that I'm calling the Window.open inside the callback but I really
   don't know what is wrong coul someone give me a hand?
 
   Any suggestions?
   Thanks!
   Federico.
 


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Re: Open a local file with GWT

2009-04-07 Thread ffs1985

I don't use an Anchor because I want to open a new windows when the
user hits click on the view document button that I have on the
application. If I use a Anchor, the user must click on my button when
the callback returns, the Anchor will appear and then the user must
click on Anchor to open the document. I try to save this as an
emergency solution.
Thanks,

Federico

On Apr 7, 11:46 am, makoki iagoto...@gmail.com wrote:
 Well, maybe the matter is that Window.open will be caught by some
 popup blockers. Why dont you use an Anchor element with a _blank
 target, this will open a new window and it's not blocked by browsers.
 First do an asynchronous call to retrieve the url and once you have
 show and anchor element with a _blank target with your url, the user
 just needs to click it to download the file

 On 7 abr, 13:04,ffs1985ffs1...@gmail.com wrote:

  Hi I'm trying to make a function that let the user download a file
  from my application and see it. I could copy the file from server to a
  local root but when I've tried to open it, does it work on hosted mode
  but in web mode fails always, no matter what browser I try(IE 7,
  Firefox and Chrome).
  My code is the next one:

  private void openDocument(String documentName) {
                  final ManagerExportAsync manejador = 
  ManagerExport.Util.getInstance
  ();
                  AsyncCallback callback = new AsyncCallback(){
                          String link;
                          public void onSuccess(final Object result) {
                                    link = (String)result;
                                    Window.open(pdfLink,_blank,);
                          }
                          public void onFailure(Throwable caught){}
                          };

                  manejador.openDocument(User,userId, 
  documentName,callback);
          }

  The String link result is something like this file///:C:/test.jpg
  I don't know what it's wrong. I read somewhere that the problem could
  be that I'm calling the Window.open inside the callback but I really
  don't know what is wrong coul someone give me a hand?

  Any suggestions?
  Thanks!
  Federico.
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Re: Open a local file with GWT

2009-04-07 Thread ffs1985

I'm not trying to read files from filesystem from plain javascript, I
want to open a new browsers window with a local url. The browser
should decide how he will open this file.

On Apr 7, 8:56 am, alex.d alex.dukhov...@googlemail.com wrote:
 You CAN'T read files from filesystem from plain javascript. Applets or
 Gears are a way to go. Another way is that user just opens your file
 instead of downloading it ;-)

 On 7 Apr., 13:04,ffs1985ffs1...@gmail.com wrote:

  Hi I'm trying to make a function that let the user download a file
  from my application and see it. I could copy the file from server to a
  local root but when I've tried to open it, does it work on hosted mode
  but in web mode fails always, no matter what browser I try(IE 7,
  Firefox and Chrome).
  My code is the next one:

  private void openDocument(String documentName) {
                  final ManagerExportAsync manejador = 
  ManagerExport.Util.getInstance
  ();
                  AsyncCallback callback = new AsyncCallback(){
                          String link;
                          public void onSuccess(final Object result) {
                                    link = (String)result;
                                    Window.open(pdfLink,_blank,);
                          }
                          public void onFailure(Throwable caught){}
                          };

                  manejador.openDocument(User,userId, 
  documentName,callback);
          }

  The String link result is something like this file///:C:/test.jpg
  I don't know what it's wrong. I read somewhere that the problem could
  be that I'm calling the Window.open inside the callback but I really
  don't know what is wrong coul someone give me a hand?

  Any suggestions?
  Thanks!
  Federico.
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Re: Open a local file with GWT

2009-04-07 Thread ffs1985

I don't know what is a PipedReader if you could send me more
information i will appreciate very much
Thanks,
Federico

On Apr 7, 11:21 am, @vi aviral.ban...@gmail.com wrote:
 Did you try using a PipedReader?

 On Apr 7, 4:04 pm,ffs1985ffs1...@gmail.com wrote:

  Hi I'm trying to make a function that let the user download a file
  from my application and see it. I could copy the file from server to a
  local root but when I've tried to open it, does it work on hosted mode
  but in web mode fails always, no matter what browser I try(IE 7,
  Firefox and Chrome).
  My code is the next one:

  private void openDocument(String documentName) {
                  final ManagerExportAsync manejador = 
  ManagerExport.Util.getInstance
  ();
                  AsyncCallback callback = new AsyncCallback(){
                          String link;
                          public void onSuccess(final Object result) {
                                    link = (String)result;
                                    Window.open(pdfLink,_blank,);
                          }
                          public void onFailure(Throwable caught){}
                          };

                  manejador.openDocument(User,userId, 
  documentName,callback);
          }

  The String link result is something like this file///:C:/test.jpg
  I don't know what it's wrong. I read somewhere that the problem could
  be that I'm calling the Window.open inside the callback but I really
  don't know what is wrong coul someone give me a hand?

  Any suggestions?
  Thanks!
  Federico.
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Re: Open a local file with GWT

2009-04-07 Thread vaibhav
Hi,
I am facing some king of this problem too. What I want to show the preview
of a image which is reside in the local file system of the remote server.
The path of this image is residing in the database like c:\images\sunset.png
 How I will show the preview on the GWT panel. If the PipedReader can help
in this this will be great as I do not know about piped reader.

Regards,
Vaibhav 
 
---Original Message---
 
From: ffs1985
Date: 04/08/09 10:09:44
To: Google Web Toolkit
Subject: Re: Open a local file with GWT
 
I don't know what is a PipedReader if you could send me more
information i will appreciate very much
Thanks,
Federico
 
On Apr 7, 11:21 am, @vi aviral.ban...@gmail.com wrote:
 Did you try using a PipedReader?

 On Apr 7, 4:04 pm,ffs1985ffs1...@gmail.com wrote:

  Hi I'm trying to make a function that let the user download a file
  from my application and see it. I could copy the file from server to a
  local root but when I've tried to open it, does it work on hosted mode
  but in web mode fails always, no matter what browser I try(IE 7,
  Firefox and Chrome).
  My code is the next one:

  private void openDocument(String documentName) {
  final ManagerExportAsync manejador = ManagerExport.Util
getInstance
  ();
  AsyncCallback callback = new AsyncCallback(){
  String link;
  public void onSuccess(final Object result) {
link = (String)result;
Window.open(pdfLink,_blank,);
  }
  public void onFailure(Throwable caught){}
  };

  manejador.openDocument(User,userId, documentName
callback);
  }

  The String link result is something like this file///:C:/test.jpg
  I don't know what it's wrong. I read somewhere that the problem could
  be that I'm calling the Window.open inside the callback but I really
  don't know what is wrong coul someone give me a hand?

  Any suggestions?
  Thanks!
  Federico.
 
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