Bug 312959 [Import/Export] importing file from big disk hangs UI
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
}
            /*
             * @see FocusListener.focusLost(FocusEvent)
             */
            public void focusLost(FocusEvent e) {
                
                if (entryChanged) {
                    entryChanged = false;
                    updateFromSourceField();
                }
            }
        });
        
        sourceBrowseButton = new Button(sourceContainerGroup, SWT.PUSH);
        sourceBrowseButton.setText(DataTransferMessages.DataTransfer_browse);
        sourceBrowseButton.addListener(SWT.Selection, this);
        sourceBrowseButton.setLayoutData(new GridData(
                GridData.HORIZONTAL_ALIGN_FILL));
        sourceBrowseButton.setFont(parent.getFont());
        setButtonLayoutData(sourceBrowseButton);
    }
    /**
     * Update the receiver from the source name field.
     */
    private void updateFromSourceField() {
        setSourceName(sourceNameField.getText());
        
        updateWidgetEnablements();
        fileSystemStructureProvider.clearVisitedDirs();
    }