getFiles: truncate to 1 file only

See http://nabble.documentfoundation.org/Multiselection-needs-work-td4153207.html
for details

Change-Id: I7f855a067349381e2567bd15a8daa56aad412774
Reviewed-on: https://gerrit.libreoffice.org/16959Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>

fpicker/source/win32/filepicker/VistaFilePicker.cxx

@@ -261,7 +261,11 @@ css::uno::Sequence< OUString > SAL_CALL VistaFilePicker::getFiles()
 
     m_aAsyncExecute.triggerRequestThreadAware(rRequest, AsyncRequests::BLOCKED);
 
-    const  css::uno::Sequence< OUString > lFiles = rRequest->getArgumentOrDefault(PROP_SELECTED_FILES, css::uno::Sequence< OUString >());
+    css::uno::Sequence< OUString > lFiles = rRequest->getArgumentOrDefault(PROP_SELECTED_FILES, css::uno::Sequence< OUString >());
+    // multiselection doesn't really work
+    // so just retrieve the first url
+    if (lFiles.getLength() > 1)
+        lFiles.realloc(1);
     m_lLastFiles = lFiles;
     return lFiles;
 }

offapi/com/sun/star/ui/dialogs/XFilePicker.idl

@@ -96,9 +96,8 @@ published interface XFilePicker: com::sun::star::ui::dialogs::XExecutableDialog
                 <li>Multi-selection is enabled:
                 If only one file is selected, the first entry
                 of the sequence contains the complete path/filename in URL format.
-                If multiple files are selected, the first entry of the sequence contains
-                the path in URL format, and the other entries contains the names of the selected
-                files without path information.</li>
+                If multiple files are selected, only the first entry is retrieved with
+                the path in URL format.</li>
             </ol>
 
             <br/>

vcl/unx/kde4/KDE4FilePicker.cxx

@@ -336,9 +336,12 @@ uno::Sequence< OUString > SAL_CALL KDE4FilePicker::getFiles()
 
     KUrl::List urls = _dialog->selectedUrls();
     uno::Sequence< OUString > seq( urls.size());
-    int i = 0;
-    foreach( const KUrl& url, urls )
-        seq[ i++ ]= toOUString( url.url());
+    // multiselection doesn't really work
+    // so just retrieve the first url
+    if (seq.getLength() > 1)
+        seq.realloc(1);
+    if (seq.getLength() == 1)
+        seq[0] = urls.front();
     return seq;
 }