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/**
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* Copyright (C) 2017 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.databaseAdmin.preferencePage;
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import java.awt.Toolkit;
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import javax.swing.event.DocumentEvent;
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import org.apache.commons.lang.StringUtils;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.MouseEvent;
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import org.eclipse.swt.events.MouseListener;
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import org.eclipse.swt.graphics.Rectangle;
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import org.eclipse.swt.layout.GridData;
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import org.eclipse.swt.widgets.Button;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.List;
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import org.eclipse.swt.widgets.Text;
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import eu.etaxonomy.cdm.model.metadata.CdmPreference;
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import eu.etaxonomy.cdm.model.metadata.PreferencePredicate;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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/**
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* @author k.luther
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* @date 20.04.2017
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*
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*/
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public class ListComponent
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{
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private List list;
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private static final String addString = "Add Provider";
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private static final String removeString = "Remove Provider";
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private static final String noProvider = "No Providers available";
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private Button removeButton;
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private Text providerURI;
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public ListComponent(Composite parent, int style) {
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list = new List(parent, SWT.BORDER | SWT.V_SCROLL);
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GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, true, 2, 3);
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gridData.grabExcessHorizontalSpace = true;
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list.setLayoutData(gridData);
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Rectangle clientArea = parent.getShell().getClientArea ();
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list.setBounds (clientArea.x, clientArea.y, 100, 500);
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CdmPreference providerListPreference = PreferencesUtil.getPreferenceFromDB(PreferencePredicate.BioCaseProvider);
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String allProviderString = providerListPreference.getValue();
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// = PreferencesUtil.getPreferenceStore().getString(IPreferenceKeys.BIOCASE_PROVIDER_LIST);
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//the string is structured like this: http://ww3.bgbm.org/biocase/pywrapper.cgi?dsa=DNA_Bank;http:...;
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String[] providerArray = allProviderString.split(";");
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for (String providerString : providerArray){
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if (!StringUtils.isBlank(providerString)){
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list.add(providerString);
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}
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}
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if (list.getItemCount() == 0){
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list.add(noProvider);
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}
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list.add("");
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// list.setSelection(0);
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GridData dataList = new GridData();
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dataList.horizontalAlignment = GridData.FILL;
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dataList.horizontalSpan = 3;
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// dataList.grabExcessVerticalSpace = true;
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list.setLayoutData(dataList);
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providerURI = new Text(parent, SWT.BORDER | SWT.SINGLE | SWT.FULL_SELECTION);
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GridData dataProviderUri = new GridData();
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dataProviderUri.horizontalAlignment = GridData.FILL;
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dataProviderUri.horizontalSpan = 3;
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providerURI.setLayoutData(dataProviderUri);
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Button addButton = new Button(parent, SWT.NULL);
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AddListener addListener = new AddListener(addButton);
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addButton.setText(addString);
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addButton.addMouseListener(addListener);
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removeButton = new Button(parent, SWT.NULL);
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removeButton.setText(removeString);
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removeButton.addMouseListener(new RemoveListener());
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}
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class RemoveListener implements MouseListener {
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@Override
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public void mouseUp(MouseEvent e) {
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//This method can be called only if
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//there's a valid selection
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//so go ahead and remove whatever's selected.
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int index = list.getSelectionIndex();
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list.remove(index);
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int size = list.getItemCount();
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if (size == 0) { //Nothing's left, disable removing.
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removeButton.setEnabled(false);
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} else { //Select an index.
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if (index == size) {
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//removed item in last position
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index--;
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}
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list.setSelection(index-1);
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void mouseDoubleClick(MouseEvent e) {
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// TODO Auto-generated method stub
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void mouseDown(MouseEvent e) {
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// TODO Auto-generated method stub
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}
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}
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//This listener is shared by the text field and the add button.
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class AddListener implements MouseListener {
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private boolean alreadyEnabled = false;
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private Button button;
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public AddListener(Button button) {
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this.button = button;
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}
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protected boolean alreadyInList(String name) {
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return list.getData(name) != null;
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}
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private void enableButton() {
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if (!alreadyEnabled) {
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button.setEnabled(true);
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}
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}
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private boolean handleEmptyTextField(DocumentEvent e) {
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if (e.getDocument().getLength() <= 0) {
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button.setEnabled(false);
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alreadyEnabled = false;
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return true;
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}
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return false;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void mouseDoubleClick(MouseEvent e) {
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// TODO Auto-generated method stub
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void mouseDown(MouseEvent e) {
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// TODO Auto-generated method stub
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void mouseUp(MouseEvent e) {
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String name = providerURI.getText();
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//User didn't type in a unique name...
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if (name.equals("") || alreadyInList(name)) {
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Toolkit.getDefaultToolkit().beep();
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providerURI.selectAll();
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return;
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}
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int index = list.getSelectionIndex(); //get selected index
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if (index == -1) { //no selection, so insert at beginning
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index = 0;
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} else { //add after the selected item
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index++;
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}
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if (list.getItem(0).equals(noProvider)){
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list.remove(noProvider);
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}
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list.add(providerURI.getText(), index);
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//Select the new item
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list.setSelection(index);
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list.update();
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list.redraw();
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providerURI.setText("");
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}
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}
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public String createAllProviderString(){
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String allProviderString = null;
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boolean first = true;
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for (String item: list.getItems()){
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if (first || allProviderString == null || allProviderString == ""){
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allProviderString = item.trim();
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first = false;
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}else{
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allProviderString +=";"+ item.trim();
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}
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}
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return allProviderString;
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}
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}
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ref #6429: missed to commit the new classes in last commit