Bug 97523 [Import/Export] Get overwrite prompt before no resources selected prompt
3.1 RC1 - File > Export > Archive - clear any selected resources - enter an archive file name where the file already exists - Finish - it prompts to overwrite the file; choose Yes - it says "There are no resources currently selected for export" (OK) Should get the "no resources" prompt first, and not bother with the second one. Should check the other export wizards too.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
if (visible)
            this.sourceNameField.setFocus();
    }
    /**
     * Update the selections with those in map . Implemented here to give inner class
     * visibility
     * @param map Map - key tree elements, values Lists of list elements
     */
    protected void updateSelections(Map map) {
        super.updateSelections(map);
    }
    /**
     * Check if widgets are enabled or disabled by a change in the dialog.
     * Provided here to give access to inner classes.
     */
    protected void updateWidgetEnablements() {
        super.updateWidgetEnablements();
    }
    /**
     *	Answer a boolean indicating whether self's source specification
     *	widgets currently all contain valid values.
     */
    protected boolean validateSourceGroup() {
        File sourceDirectory = getSourceDirectory();
        if (sourceDirectory == null) {
            setMessage(SOURCE_EMPTY_MESSAGE);
            enableButtonGroup(false);
            return false;
        }
        if (sourceConflictsWithDestination(new Path(sourceDirectory.getPath()))) {