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From "Sandro Martini (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIVOT-878) Show FileBrowserSheet while Initializing
Date Fri, 20 Jun 2014 15:46:30 GMT

     [ https://issues.apache.org/jira/browse/PIVOT-878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sandro Martini updated PIVOT-878:
---------------------------------

    Issue Type: Wish  (was: Improvement)

> Show FileBrowserSheet while Initializing
> ----------------------------------------
>
>                 Key: PIVOT-878
>                 URL: https://issues.apache.org/jira/browse/PIVOT-878
>             Project: Pivot
>          Issue Type: Wish
>          Components: wtk-terra
>    Affects Versions: 2.0.2
>         Environment: All (Mostly Windows)
>            Reporter: Ronald Thomas
>            Assignee: Roger Whitcomb
>            Priority: Minor
>              Labels: Browsing, File, FileBrowserSheet, performance, responsiveness, wtk,
wtk-terra
>         Attachments: PIVOT-878_example_src.zip, tptp_profiler_exec_call_tree_screenshot.png
>
>
> If the list of file roots returned by http://docs.oracle.com/javase/1.4.2/docs/api/java/io/File.html#listRoots()
includes more than a few network drives (primarily on windows where each mapped drive is its
own "file system root"), or if the initial path on the FileBrowserSheet maps to a device that
takes a while to "spin up", the FileBrowserSheet may not appear on the screen for several
seconds making the Pivot app appear unresponsive.  It would help if there were some indication
of activity immediately after the call to the FileBrowserSheet.open() method.  The FileBrowserSheet
could be displayed in a "loading" mode and then switched to its normal display mode once the
potentially long-running initialization has completed.
> In this case, the long running code is around line 936-947 of the 2.0.2 release source
file at wtk-terra\src\org\apache\pivot\wtk\skin\terra\TerraFileBrowserSkin.java
> Steps to reproduce:
> # Create a Pivot application that opens a FileBrowserSheet using a button.
> # Map about 6 network drives or connect external hard drives to drive letters on a machine
running windows
> # Wait enough time for the power-management "spin down" on some or all of the mapped
or connected drives
> # Run the Pivot application and click the button that opens the FileBrowserSheet
> # *Nothing appears to be happening for several seconds* (far too long) while the JVM
collects the results of File.listRoots() to populate the "driveListButton" listData.
> # Finally after several seconds, the FileBrowserSheet appears.



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