org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/components/RepositorySelectionPage.java

   1 /*******************************************************************************
   2  * Copyright (C) 2007, 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
   3  * Copyright (C) 2008, Roger C. Soares <rogersoares@intelinet.com.br>
   4  * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
   5  * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
   6  *
   7  * All rights reserved. This program and the accompanying materials
   8  * are made available under the terms of the Eclipse Public License v1.0
   9  * which accompanies this distribution, and is available at
  10  * http://www.eclipse.org/legal/epl-v10.html
  11  *******************************************************************************/
  12 package org.eclipse.egit.ui.internal.components;
  13
  14 import java.io.File;
  15 import java.net.URI;
  16 import java.net.URISyntaxException;
  17 import java.util.ArrayList;
  18 import java.util.List;
  19 import java.util.StringTokenizer;
  20 import java.util.regex.Pattern;
  21 import java.util.regex.PatternSyntaxException;
  22
  23 import org.eclipse.core.runtime.preferences.IEclipsePreferences;
  24 import org.eclipse.core.runtime.preferences.InstanceScope;
  25 import org.eclipse.egit.ui.Activator;
  26 import org.eclipse.egit.ui.UIText;
  27 import org.eclipse.egit.ui.UIUtils;
  28 import org.eclipse.jface.fieldassist.ContentProposalAdapter;
  29 import org.eclipse.jface.fieldassist.IContentProposal;
  30 import org.eclipse.jface.fieldassist.IContentProposalProvider;
  31 import org.eclipse.jface.fieldassist.TextContentAdapter;
  32 import org.eclipse.jface.layout.GridDataFactory;
  33 import org.eclipse.jgit.lib.Constants;
  34 import org.eclipse.jgit.transport.RemoteConfig;
  35 import org.eclipse.jgit.transport.Transport;
  36 import org.eclipse.jgit.transport.URIish;
  37 import org.eclipse.jgit.util.FS;
  38 import org.eclipse.osgi.util.NLS;
  39 import org.eclipse.swt.SWT;
  40 import org.eclipse.swt.dnd.Clipboard;
  41 import org.eclipse.swt.dnd.TextTransfer;
  42 import org.eclipse.swt.events.ModifyEvent;
  43 import org.eclipse.swt.events.ModifyListener;
  44 import org.eclipse.swt.events.SelectionAdapter;
  45 import org.eclipse.swt.events.SelectionEvent;
  46 import org.eclipse.swt.events.VerifyEvent;
  47 import org.eclipse.swt.events.VerifyListener;
  48 import org.eclipse.swt.layout.GridData;
  49 import org.eclipse.swt.layout.GridLayout;
  50 import org.eclipse.swt.widgets.Button;
  51 import org.eclipse.swt.widgets.Combo;
  52 import org.eclipse.swt.widgets.Composite;
  53 import org.eclipse.swt.widgets.Control;
  54 import org.eclipse.swt.widgets.DirectoryDialog;
  55 import org.eclipse.swt.widgets.Display;
  56 import org.eclipse.swt.widgets.Group;
  57 import org.eclipse.swt.widgets.Label;
  58 import org.eclipse.swt.widgets.Text;
  59 import org.osgi.service.prefs.BackingStoreException;
  60
  61 /**
  62  * Wizard page that allows the user entering the location of a remote repository
  63  * by specifying URL manually or selecting a preconfigured remote repository.
  64  */
  65 public class RepositorySelectionPage extends BaseWizardPage {
  66
  67         private final static String USED_URIS_PREF = "RepositorySelectionPage.UsedUris"; //$NON-NLS-1$
  68
  69         private final static String USED_URIS_LENGTH_PREF = "RepositorySelectionPage.UsedUrisLength"; //$NON-NLS-1$
  70
  71         private static final int REMOTE_CONFIG_TEXT_MAX_LENGTH = 80;
  72
  73         private static final int S_GIT = 0;
  74
  75         private static final int S_SSH = 1;
  76
  77         private static final int S_SFTP = 2;
  78
  79         private static final int S_HTTP = 3;
  80
  81         private static final int S_HTTPS = 4;
  82
  83         private static final int S_FTP = 5;
  84
  85         private static final int S_FILE = 6;
  86
  87         private static final String[] DEFAULT_SCHEMES;
  88
  89         static {
  90                 DEFAULT_SCHEMES = new String[7];
  91                 DEFAULT_SCHEMES[S_GIT] = "git"; //$NON-NLS-1$
  92                 DEFAULT_SCHEMES[S_SSH] = "git+ssh"; //$NON-NLS-1$
  93                 DEFAULT_SCHEMES[S_SFTP] = "sftp"; //$NON-NLS-1$
  94                 DEFAULT_SCHEMES[S_HTTP] = "http"; //$NON-NLS-1$
  95                 DEFAULT_SCHEMES[S_HTTPS] = "https"; //$NON-NLS-1$
  96                 DEFAULT_SCHEMES[S_FTP] = "ftp"; //$NON-NLS-1$
  97                 DEFAULT_SCHEMES[S_FILE] = "file"; //$NON-NLS-1$
  98         }
  99
 100         private final List<RemoteConfig> configuredRemotes;
 101
 102         private final boolean sourceSelection;
 103
 104         private final String presetUri;
 105
 106         private Group authGroup;
 107
 108         private Text uriText;
 109
 110         private Text hostText;
 111
 112         private Text pathText;
 113
 114         private Text userText;
 115
 116         private Text passText;
 117
 118         private Combo scheme;
 119
 120         private Text portText;
 121
 122         private int eventDepth;
 123
 124         private URIish uri;
 125
 126         private RemoteConfig remoteConfig;
 127
 128         private RepositorySelection selection;
 129
 130         private Composite remotePanel;
 131
 132         private Button remoteButton;
 133
 134         private Combo remoteCombo;
 135
 136         private Composite uriPanel;
 137
 138         private Button uriButton;
 139
 140         /**
 141          * Create repository selection page, allowing user specifying URI or
 142          * (optionally) choosing from preconfigured remotes list.
 143          * <p>
 144          * Wizard page is created without image, just with text description.
 145          *
 146          * @param sourceSelection
 147          *            true if dialog is used for source selection; false otherwise
 148          *            (destination selection). This indicates appropriate text
 149          *            messages.
 150          * @param configuredRemotes
 151          *            list of configured remotes that user may select as an
 152          *            alternative to manual URI specification. Remotes appear in
 153          *            given order in GUI, with
 154          *            {@value Constants#DEFAULT_REMOTE_NAME} as the default choice.
 155          *            List may be null or empty - no remotes configurations appear
 156          *            in this case. Note that the provided list may be changed by
 157          *            this constructor.
 158          * @param presetUri
 159          *            the pre-set URI, may be null
 160          */
 161         public RepositorySelectionPage(final boolean sourceSelection,
 162                         final List<RemoteConfig> configuredRemotes, String presetUri) {
 163
 164                 super(RepositorySelectionPage.class.getName());
 165
 166                 this.uri = new URIish();
 167                 this.sourceSelection = sourceSelection;
 168
 169                 String preset = null;
 170                 if (presetUri == null) {
 171                         Clipboard clippy = new Clipboard(Display.getCurrent());
 172                         String text = (String) clippy.getContents(TextTransfer.getInstance());
 173                         try {
 174                                 if(text != null) {
 175                                         text = text.trim();
 176                                         if(Transport.canHandleProtocol(new URIish(text)))
 177                                                 preset = text;
 178                                 }
 179                         } catch (URISyntaxException e) {
 180                                 preset = null;
 181                         }
 182                         clippy.dispose();
 183                 }
 184                 this.presetUri = preset;
 185
 186                 this.configuredRemotes = getUsableConfigs(configuredRemotes);
 187                 this.remoteConfig = selectDefaultRemoteConfig();
 188
 189                 selection = RepositorySelection.INVALID_SELECTION;
 190
 191                 if (sourceSelection) {
 192                         setTitle(UIText.RepositorySelectionPage_sourceSelectionTitle);
 193                         setDescription(UIText.RepositorySelectionPage_sourceSelectionDescription);
 194                 } else {
 195                         setTitle(UIText.RepositorySelectionPage_destinationSelectionTitle);
 196                         setDescription(UIText.RepositorySelectionPage_destinationSelectionDescription);
 197                 }
 198         }
 199
 200         /**
 201          * Create repository selection page, allowing user specifying URI, with no
 202          * preconfigured remotes selection.
 203          *
 204          * @param sourceSelection
 205          *            true if dialog is used for source selection; false otherwise
 206          *            (destination selection). This indicates appropriate text
 207          *            messages.
 208          * @param presetUri
 209          *            the pre-set URI, may be null
 210          */
 211         public RepositorySelectionPage(final boolean sourceSelection,
 212                         String presetUri) {
 213                 this(sourceSelection, null, presetUri);
 214         }
 215
 216         /**
 217          * @return repository selection representing current page state.
 218          */
 219         public RepositorySelection getSelection() {
 220                 return selection;
 221         }
 222
 223         /**
 224          * Compare current repository selection set by user to provided one.
 225          *
 226          * @param s
 227          *            repository selection to compare.
 228          * @return true if provided selection is equal to current page selection,
 229          *         false otherwise.
 230          */
 231         public boolean selectionEquals(final RepositorySelection s) {
 232                 return selection.equals(s);
 233         }
 234
 235         public void createControl(final Composite parent) {
 236                 final Composite panel = new Composite(parent, SWT.NULL);
 237                 panel.setLayout(new GridLayout());
 238
 239                 if (configuredRemotes != null)
 240                         createRemotePanel(panel);
 241
 242                 createUriPanel(panel);
 243
 244                 if(presetUri != null)
 245                         updateFields(presetUri);
 246
 247                 updateRemoteAndURIPanels();
 248                 setControl(panel);
 249
 250                 checkPage();
 251         }
 252
 253         private void createRemotePanel(final Composite parent) {
 254                 remoteButton = new Button(parent, SWT.RADIO);
 255                 remoteButton
 256                                 .setText(UIText.RepositorySelectionPage_configuredRemoteChoice
 257                                                 + ":"); //$NON-NLS-1$
 258                 remoteButton.setSelection(true);
 259
 260                 remotePanel = new Composite(parent, SWT.NULL);
 261                 remotePanel.setLayout(new GridLayout());
 262                 final GridData gd = new GridData();
 263                 gd.grabExcessHorizontalSpace = true;
 264                 gd.horizontalAlignment = SWT.FILL;
 265                 remotePanel.setLayoutData(gd);
 266
 267                 remoteCombo = new Combo(remotePanel, SWT.READ_ONLY | SWT.DROP_DOWN);
 268                 final String items[] = new String[configuredRemotes.size()];
 269                 int i = 0;
 270                 for (final RemoteConfig rc : configuredRemotes)
 271                         items[i++] = getTextForRemoteConfig(rc);
 272                 final int defaultIndex = configuredRemotes.indexOf(remoteConfig);
 273                 remoteCombo.setItems(items);
 274                 remoteCombo.select(defaultIndex);
 275                 remoteCombo.addSelectionListener(new SelectionAdapter() {
 276                         @Override
 277                         public void widgetSelected(SelectionEvent e) {
 278                                 final int idx = remoteCombo.getSelectionIndex();
 279                                 remoteConfig = configuredRemotes.get(idx);
 280                                 checkPage();
 281                         }
 282                 });
 283         }
 284
 285         private void createUriPanel(final Composite parent) {
 286                 if (configuredRemotes != null) {
 287                         uriButton = new Button(parent, SWT.RADIO);
 288                         uriButton.setText(UIText.RepositorySelectionPage_uriChoice + ":"); //$NON-NLS-1$
 289                         uriButton.addSelectionListener(new SelectionAdapter() {
 290                                 public void widgetSelected(SelectionEvent e) {
 291                                         // occurs either on selection or unselection event
 292                                         updateRemoteAndURIPanels();
 293                                         checkPage();
 294                                 }
 295                         });
 296                 }
 297
 298                 uriPanel = new Composite(parent, SWT.NULL);
 299                 uriPanel.setLayout(new GridLayout());
 300                 final GridData gd = new GridData();
 301                 gd.grabExcessHorizontalSpace = true;
 302                 gd.horizontalAlignment = SWT.FILL;
 303                 uriPanel.setLayoutData(gd);
 304
 305                 createLocationGroup(uriPanel);
 306                 createConnectionGroup(uriPanel);
 307                 authGroup = createAuthenticationGroup(uriPanel);
 308         }
 309
 310         private void createLocationGroup(final Composite parent) {
 311                 final Group g = createGroup(parent,
 312                                 UIText.RepositorySelectionPage_groupLocation);
 313
 314                 g.setLayout(new GridLayout(3, false));
 315
 316                 newLabel(g, UIText.RepositorySelectionPage_promptURI + ":"); //$NON-NLS-1$
 317                 uriText = new Text(g, SWT.BORDER);
 318
 319                 if (presetUri != null)
 320                         uriText.setText(presetUri);
 321
 322                 uriText.setLayoutData(createFieldGridData());
 323                 uriText.addModifyListener(new ModifyListener() {
 324                         public void modifyText(final ModifyEvent e) {
 325                                 updateFields(uriText.getText());
 326                         }
 327                 });
 328
 329                 addContentProposalToUriText(uriText);
 330
 331                 Button browseButton = new Button(g, SWT.NULL);
 332                 browseButton.setText(UIText.RepositorySelectionPage_BrowseLocalFile);
 333                 browseButton.addSelectionListener(new SelectionAdapter() {
 334
 335                         @Override
 336                         public void widgetSelected(SelectionEvent e) {
 337                                 DirectoryDialog dialog = new DirectoryDialog(getShell());
 338                                 // if a file-uri was selected before, let's try to open
 339                                 // the directory dialog on the same directory
 340                                 if (!uriText.getText().equals("")) { //$NON-NLS-1$
 341                                         try {
 342                                                 URI testUri = URI.create(uriText.getText().replace(
 343                                                                 '\\', '/'));
 344                                                 if (testUri.getScheme().equals("file")) { //$NON-NLS-1$
 345                                                         String path = testUri.getPath();
 346                                                         if (path.length() > 1 && path.startsWith("/")) //$NON-NLS-1$
 347                                                                 path = path.substring(1);
 348
 349                                                         dialog.setFilterPath(path);
 350                                                 }
 351                                         } catch (IllegalArgumentException e1) {
 352                                                 // ignore here, we just' don't set the directory in the
 353                                                 // browser
 354                                         }
 355
 356                                 }
 357                                 String result = dialog.open();
 358                                 if (result != null)
 359                                         uriText.setText("file:///" + result); //$NON-NLS-1$
 360                         }
 361
 362                 });
 363
 364                 newLabel(g, UIText.RepositorySelectionPage_promptHost + ":"); //$NON-NLS-1$
 365                 hostText = new Text(g, SWT.BORDER);
 366                 GridDataFactory.fillDefaults().span(2, 1).applyTo(hostText);
 367                 hostText.addModifyListener(new ModifyListener() {
 368                         public void modifyText(final ModifyEvent e) {
 369                                 setURI(uri.setHost(nullString(hostText.getText())));
 370                         }
 371                 });
 372
 373                 newLabel(g, UIText.RepositorySelectionPage_promptPath + ":"); //$NON-NLS-1$
 374                 pathText = new Text(g, SWT.BORDER);
 375                 GridDataFactory.fillDefaults().span(2, 1).applyTo(pathText);
 376                 pathText.addModifyListener(new ModifyListener() {
 377                         public void modifyText(final ModifyEvent e) {
 378                                 setURI(uri.setPath(nullString(pathText.getText())));
 379                         }
 380                 });
 381
 382         }
 383
 384         private Group createAuthenticationGroup(final Composite parent) {
 385                 final Group g = createGroup(parent,
 386                                 UIText.RepositorySelectionPage_groupAuthentication);
 387
 388                 newLabel(g, UIText.RepositorySelectionPage_promptUser + ":"); //$NON-NLS-1$
 389                 userText = new Text(g, SWT.BORDER);
 390                 userText.setLayoutData(createFieldGridData());
 391                 userText.addModifyListener(new ModifyListener() {
 392                         public void modifyText(final ModifyEvent e) {
 393                                 setURI(uri.setUser(nullString(userText.getText())));
 394                         }
 395                 });
 396
 397                 newLabel(g, UIText.RepositorySelectionPage_promptPassword + ":"); //$NON-NLS-1$
 398                 passText = new Text(g, SWT.BORDER | SWT.PASSWORD);
 399                 passText.setLayoutData(createFieldGridData());
 400                 return g;
 401         }
 402
 403         private void createConnectionGroup(final Composite parent) {
 404                 final Group g = createGroup(parent,
 405                                 UIText.RepositorySelectionPage_groupConnection);
 406
 407                 newLabel(g, UIText.RepositorySelectionPage_promptScheme + ":"); //$NON-NLS-1$
 408                 scheme = new Combo(g, SWT.DROP_DOWN | SWT.READ_ONLY);
 409                 scheme.setItems(DEFAULT_SCHEMES);
 410                 scheme.addSelectionListener(new SelectionAdapter() {
 411                         public void widgetSelected(final SelectionEvent e) {
 412                                 final int idx = scheme.getSelectionIndex();
 413                                 if (idx < 0)
 414                                         setURI(uri.setScheme(null));
 415                                 else
 416                                         setURI(uri.setScheme(nullString(scheme.getItem(idx))));
 417                                 updateAuthGroup();
 418                         }
 419                 });
 420
 421                 newLabel(g, UIText.RepositorySelectionPage_promptPort + ":"); //$NON-NLS-1$
 422                 portText = new Text(g, SWT.BORDER);
 423                 portText.addVerifyListener(new VerifyListener() {
 424                         final Pattern p = Pattern.compile("^(?:[1-9][0-9]*)?$"); //$NON-NLS-1$
 425
 426                         public void verifyText(final VerifyEvent e) {
 427                                 final String v = portText.getText();
 428                                 e.doit = p.matcher(
 429                                                 v.substring(0, e.start) + e.text + v.substring(e.end))
 430                                                 .matches();
 431                         }
 432                 });
 433                 portText.addModifyListener(new ModifyListener() {
 434                         public void modifyText(final ModifyEvent e) {
 435                                 final String val = nullString(portText.getText());
 436                                 if (val == null)
 437                                         setURI(uri.setPort(-1));
 438                                 else {
 439                                         try {
 440                                                 setURI(uri.setPort(Integer.parseInt(val)));
 441                                         } catch (NumberFormatException err) {
 442                                                 // Ignore it for now.
 443                                         }
 444                                 }
 445                         }
 446                 });
 447         }
 448
 449         private Group createGroup(final Composite parent, final String text) {
 450                 final Group g = new Group(parent, SWT.NONE);
 451                 final GridLayout layout = new GridLayout();
 452                 layout.numColumns = 2;
 453                 g.setLayout(layout);
 454                 g.setText(text);
 455                 final GridData gd = new GridData();
 456                 gd.grabExcessHorizontalSpace = true;
 457                 gd.horizontalAlignment = SWT.FILL;
 458                 g.setLayoutData(gd);
 459                 return g;
 460         }
 461
 462         private void newLabel(final Group g, final String text) {
 463                 new Label(g, SWT.NULL).setText(text);
 464         }
 465
 466         private GridData createFieldGridData() {
 467                 return new GridData(SWT.FILL, SWT.DEFAULT, true, false);
 468         }
 469
 470         private boolean isGIT(final URIish uri) {
 471                 return "git".equals(uri.getScheme()); //$NON-NLS-1$
 472         }
 473
 474         private boolean isFile(final URIish uri) {
 475                 if ("file".equals(uri.getScheme()) || uri.getScheme() == null) //$NON-NLS-1$
 476                         return true;
 477                 if (uri.getHost() != null || uri.getPort() > 0 || uri.getUser() != null
 478                                 || uri.getPass() != null || uri.getPath() == null)
 479                         return false;
 480                 if (uri.getScheme() == null)
 481                         return FS.resolve(new File("."), uri.getPath()).isDirectory(); //$NON-NLS-1$
 482                 return false;
 483         }
 484
 485         private boolean isSSH(final URIish uri) {
 486                 if (!uri.isRemote())
 487                         return false;
 488                 final String scheme = uri.getScheme();
 489                 if ("ssh".equals(scheme)) //$NON-NLS-1$
 490                         return true;
 491                 if ("ssh+git".equals(scheme)) //$NON-NLS-1$
 492                         return true;
 493                 if ("git+ssh".equals(scheme)) //$NON-NLS-1$
 494                         return true;
 495                 if (scheme == null && uri.getHost() != null && uri.getPath() != null)
 496                         return true;
 497                 return false;
 498         }
 499
 500         private String nullString(final String value) {
 501                 if (value == null)
 502                         return null;
 503                 final String v = value.trim();
 504                 return v.length() == 0 ? null : v;
 505         }
 506
 507         private void safeSet(final Text text, final String value) {
 508                 text.setText(value != null ? value : ""); //$NON-NLS-1$
 509         }
 510
 511         private boolean isURISelected() {
 512                 return configuredRemotes == null || presetUri != null
 513                                 || uriButton.getSelection();
 514         }
 515
 516         private void setURI(final URIish u) {
 517                 try {
 518                         eventDepth++;
 519                         if (eventDepth == 1) {
 520                                 uri = u;
 521                                 uriText.setText(uri.toString());
 522                                 checkPage();
 523                         }
 524                 } finally {
 525                         eventDepth--;
 526                 }
 527         }
 528
 529         private List<RemoteConfig> getUsableConfigs(final List<RemoteConfig> remotes) {
 530
 531                 if (remotes == null)
 532                         return null;
 533
 534                 List<RemoteConfig> result = new ArrayList<RemoteConfig>();
 535
 536                 for (RemoteConfig config : remotes)
 537                         if ((sourceSelection && !config.getURIs().isEmpty() || !sourceSelection
 538                                         && (!config.getPushURIs().isEmpty() || !config.getURIs()
 539                                                         .isEmpty())))
 540                                 result.add(config);
 541
 542                 if (!result.isEmpty())
 543                         return result;
 544
 545                 return null;
 546         }
 547
 548         private RemoteConfig selectDefaultRemoteConfig() {
 549                 if (configuredRemotes == null)
 550                         return null;
 551                 for (final RemoteConfig rc : configuredRemotes)
 552                         if (Constants.DEFAULT_REMOTE_NAME.equals(rc.getName()))
 553                                 return rc;
 554                 return configuredRemotes.get(0);
 555         }
 556
 557         private String getTextForRemoteConfig(final RemoteConfig rc) {
 558                 final StringBuilder sb = new StringBuilder(rc.getName());
 559                 sb.append(": "); //$NON-NLS-1$
 560                 boolean first = true;
 561                 List<URIish> uris;
 562                 if (sourceSelection) {
 563                         uris = rc.getURIs();
 564                 } else {
 565                         uris = rc.getPushURIs();
 566                         // if no push URIs are defined, use fetch URIs instead
 567                         if (uris.isEmpty()) {
 568                                 uris = rc.getURIs();
 569                         }
 570                 }
 571
 572                 for (final URIish u : uris) {
 573                         final String uString = u.toString();
 574                         if (first)
 575                                 first = false;
 576                         else {
 577                                 sb.append(", "); //$NON-NLS-1$
 578                                 if (sb.length() + uString.length() > REMOTE_CONFIG_TEXT_MAX_LENGTH) {
 579                                         sb.append("..."); //$NON-NLS-1$
 580                                         break;
 581                                 }
 582                         }
 583                         sb.append(uString);
 584                 }
 585                 return sb.toString();
 586         }
 587
 588         private void checkPage() {
 589                 if (isURISelected()) {
 590                         assert uri != null;
 591                         if (uriText.getText().length() == 0) {
 592                                 selectionIncomplete(null);
 593                                 return;
 594                         }
 595
 596                         try {
 597                                 final URIish finalURI = new URIish(uriText.getText());
 598                                 String proto = finalURI.getScheme();
 599                                 if (proto == null && scheme.getSelectionIndex() >= 0)
 600                                         proto = scheme.getItem(scheme.getSelectionIndex());
 601
 602                                 if (uri.getPath() == null) {
 603                                         selectionIncomplete(NLS.bind(
 604                                                         UIText.RepositorySelectionPage_fieldRequired,
 605                                                         unamp(UIText.RepositorySelectionPage_promptPath),
 606                                                         proto));
 607                                         return;
 608                                 }
 609
 610                                 if (isFile(finalURI)) {
 611                                         String badField = null;
 612                                         if (uri.getHost() != null)
 613                                                 badField = UIText.RepositorySelectionPage_promptHost;
 614                                         else if (uri.getUser() != null)
 615                                                 badField = UIText.RepositorySelectionPage_promptUser;
 616                                         else if (uri.getPass() != null)
 617                                                 badField = UIText.RepositorySelectionPage_promptPassword;
 618                                         if (badField != null) {
 619                                                 selectionIncomplete(NLS
 620                                                                 .bind(
 621                                                                                 UIText.RepositorySelectionPage_fieldNotSupported,
 622                                                                                 unamp(badField), proto));
 623                                                 return;
 624                                         }
 625
 626                                         final File d = FS.resolve(new File("."), uri.getPath()); //$NON-NLS-1$
 627                                         if (!d.exists()) {
 628                                                 selectionIncomplete(NLS.bind(
 629                                                                 UIText.RepositorySelectionPage_fileNotFound, d
 630                                                                                 .getAbsolutePath()));
 631                                                 return;
 632                                         }
 633
 634                                         selectionComplete(finalURI, null);
 635                                         return;
 636                                 }
 637
 638                                 if (uri.getHost() == null) {
 639                                         selectionIncomplete(NLS.bind(
 640                                                         UIText.RepositorySelectionPage_fieldRequired,
 641                                                         unamp(UIText.RepositorySelectionPage_promptHost),
 642                                                         proto));
 643                                         return;
 644                                 }
 645
 646                                 if (isGIT(finalURI)) {
 647                                         String badField = null;
 648                                         if (uri.getUser() != null)
 649                                                 badField = UIText.RepositorySelectionPage_promptUser;
 650                                         else if (uri.getPass() != null)
 651                                                 badField = UIText.RepositorySelectionPage_promptPassword;
 652                                         if (badField != null) {
 653                                                 selectionIncomplete(NLS
 654                                                                 .bind(
 655                                                                                 UIText.RepositorySelectionPage_fieldNotSupported,
 656                                                                                 unamp(badField), proto));
 657                                                 return;
 658                                         }
 659                                 }
 660
 661                                 selectionComplete(finalURI, null);
 662                                 return;
 663                         } catch (URISyntaxException e) {
 664                                 selectionIncomplete(e.getReason());
 665                                 return;
 666                         } catch (Exception e) {
 667                                 Activator.logError(NLS.bind(
 668                                                 UIText.RepositorySelectionPage_errorValidating,
 669                                                 getClass().getName()),
 670                                                 e);
 671                                 selectionIncomplete(UIText.RepositorySelectionPage_internalError);
 672                                 return;
 673                         }
 674                 } else {
 675                         assert remoteButton.getSelection();
 676                         selectionComplete(null, remoteConfig);
 677                         return;
 678                 }
 679         }
 680
 681         private String unamp(String s) {
 682                 return s.replace("&", ""); //$NON-NLS-1$ //$NON-NLS-2$
 683         }
 684
 685         private void selectionIncomplete(final String errorMessage) {
 686                 setExposedSelection(null, null);
 687                 setErrorMessage(errorMessage);
 688                 setPageComplete(false);
 689         }
 690
 691         private void selectionComplete(final URIish u, final RemoteConfig rc) {
 692                 setExposedSelection(u, rc);
 693                 setErrorMessage(null);
 694                 setPageComplete(true);
 695                 notifySelectionChanged();
 696         }
 697
 698         private void setExposedSelection(final URIish u, final RemoteConfig rc) {
 699                 final RepositorySelection newSelection = new RepositorySelection(u, rc);
 700                 if (newSelection.equals(selection))
 701                         return;
 702
 703                 selection = newSelection;
 704                 notifySelectionChanged();
 705         }
 706
 707         private void updateRemoteAndURIPanels() {
 708                 setEnabledRecursively(uriPanel, isURISelected());
 709                 if (uriPanel.getEnabled())
 710                         updateAuthGroup();
 711                 if (configuredRemotes != null)
 712                         setEnabledRecursively(remotePanel, !isURISelected());
 713         }
 714
 715         private void updateAuthGroup() {
 716                 switch (scheme.getSelectionIndex()) {
 717                 case S_GIT:
 718                         hostText.setEnabled(true);
 719                         portText.setEnabled(true);
 720                         setEnabledRecursively(authGroup, false);
 721                         break;
 722                 case S_SSH:
 723                 case S_SFTP:
 724                 case S_HTTP:
 725                 case S_HTTPS:
 726                 case S_FTP:
 727                         hostText.setEnabled(true);
 728                         portText.setEnabled(true);
 729                         setEnabledRecursively(authGroup, true);
 730                         break;
 731                 case S_FILE:
 732                         hostText.setEnabled(false);
 733                         portText.setEnabled(false);
 734                         setEnabledRecursively(authGroup, false);
 735                         break;
 736                 }
 737         }
 738
 739         @Override
 740         public void setVisible(boolean visible) {
 741                 super.setVisible(visible);
 742                 if (visible)
 743                         uriText.setFocus();
 744         }
 745
 746         /**
 747          * Adds a URI string to the list of previously added ones
 748          *
 749          * TODO move this to some proper preferences handling class instead of
 750          * making it static
 751          *
 752          * @param stringToAdd
 753          */
 754         public static void saveUriInPrefs(String stringToAdd) {
 755
 756                 List<String> uriStrings = getUrisFromPrefs();
 757
 758                 if (uriStrings.indexOf(stringToAdd) == 0)
 759                         return;
 760                 uriStrings.add(0, stringToAdd);
 761
 762                 IEclipsePreferences prefs = new InstanceScope().getNode(Activator
 763                                 .getPluginId());
 764
 765                 StringBuilder sb = new StringBuilder();
 766                 StringBuilder lb = new StringBuilder();
 767
 768                 // there is no "good" separator for URIish, so we
 769                 // keep track of the URI lengths separately
 770                 for (String uriString : uriStrings) {
 771                         sb.append(uriString);
 772                         lb.append(uriString.length());
 773                         lb.append(" "); //$NON-NLS-1$
 774                 }
 775                 prefs.put(USED_URIS_PREF, sb.toString());
 776                 prefs.put(USED_URIS_LENGTH_PREF, lb.toString());
 777
 778                 try {
 779                         prefs.flush();
 780                 } catch (BackingStoreException e) {
 781                         // we simply ignore this here
 782                 }
 783         }
 784
 785         /**
 786          * Gets the previously added URIs from the preferences
 787          *
 788          * TODO move this to some proper preferences handling class instead of
 789          * making it static
 790          *
 791          * @return a (possibly empty) list of URIs, never <code>null</code>
 792          */
 793         public static List<String> getUrisFromPrefs() {
 794
 795                 // use a TreeSet to get the same sorting always
 796                 List<String> uriStrings = new ArrayList<String>();
 797
 798                 IEclipsePreferences prefs = new InstanceScope().getNode(Activator
 799                                 .getPluginId());
 800                 // since there is no "good" separator for URIish, so we
 801                 // keep track of the URI lengths separately
 802                 String uriLengths = prefs.get(USED_URIS_LENGTH_PREF, ""); //$NON-NLS-1$
 803                 String uris = prefs.get(USED_URIS_PREF, ""); //$NON-NLS-1$
 804
 805                 StringTokenizer tok = new StringTokenizer(uriLengths, " "); //$NON-NLS-1$
 806                 int offset = 0;
 807                 while (tok.hasMoreTokens()) {
 808                         try {
 809                                 int length = Integer.parseInt(tok.nextToken());
 810                                 if (uris.length() >= (offset + length)) {
 811                                         uriStrings.add(uris.substring(offset, offset + length));
 812                                         offset += length;
 813                                 }
 814                         } catch (NumberFormatException nfe) {
 815                                 // ignore here
 816                         }
 817
 818                 }
 819
 820                 return uriStrings;
 821         }
 822
 823         private void setEnabledRecursively(final Control control,
 824                         final boolean enable) {
 825                 control.setEnabled(enable);
 826                 if (control instanceof Composite)
 827                         for (final Control child : ((Composite) control).getChildren())
 828                                 setEnabledRecursively(child, enable);
 829         }
 830
 831         private void addContentProposalToUriText(Text uriTextField) {
 832
 833                 UIUtils.addBulbDecorator(uriTextField, UIText.RepositorySelectionPage_ShowPreviousURIs_HoverText);
 834
 835                 IContentProposalProvider cp = new IContentProposalProvider() {
 836
 837                         public IContentProposal[] getProposals(String contents, int position) {
 838
 839                                 List<IContentProposal> resultList = new ArrayList<IContentProposal>();
 840
 841                                 String patternString = contents;
 842                                 while (patternString.length() > 0
 843                                                 && patternString.charAt(0) == ' ')
 844                                         patternString = patternString.substring(1);
 845                                 // make the simplest possible pattern check: allow "*"
 846                                 // for multiple characters
 847                                 patternString = patternString.replaceAll("\\x2A", ".*"); //$NON-NLS-1$ //$NON-NLS-2$
 848                                 // make sure we add a (logical) * at the end
 849                                 if (!patternString.endsWith(".*")) { //$NON-NLS-1$
 850                                         patternString = patternString + ".*"; //$NON-NLS-1$
 851                                 }
 852                                 // let's compile a case-insensitive pattern (assumes ASCII only)
 853                                 Pattern pattern;
 854                                 try {
 855                                         pattern = Pattern.compile(patternString,
 856                                                         Pattern.CASE_INSENSITIVE);
 857                                 } catch (PatternSyntaxException e) {
 858                                         pattern = null;
 859                                 }
 860
 861                                 List<String> uriStrings = getUrisFromPrefs();
 862                                 for (final String uriString : uriStrings) {
 863
 864                                         if (pattern != null
 865                                                         && !pattern.matcher(uriString).matches())
 866                                                 continue;
 867
 868                                         IContentProposal propsal = new IContentProposal() {
 869
 870                                                 public String getLabel() {
 871                                                         return null;
 872                                                 }
 873
 874                                                 public String getDescription() {
 875                                                         return null;
 876                                                 }
 877
 878                                                 public int getCursorPosition() {
 879                                                         return 0;
 880                                                 }
 881
 882                                                 public String getContent() {
 883                                                         return uriString;
 884                                                 }
 885                                         };
 886                                         resultList.add(propsal);
 887                                 }
 888
 889                                 return resultList.toArray(new IContentProposal[resultList
 890                                                 .size()]);
 891                         }
 892                 };
 893
 894                 // set the acceptance style to always replace the complete content
 895                 new ContentProposalAdapter(uriTextField, new TextContentAdapter(), cp,
 896                                 null, null)
 897                                 .setProposalAcceptanceStyle(ContentProposalAdapter.PROPOSAL_REPLACE);
 898
 899         }
 900
 901         private void updateFields(final String text) {
 902                 try {
 903                         eventDepth++;
 904                         if (eventDepth != 1)
 905                                 return;
 906
 907                         final URIish u = new URIish(text);
 908                         safeSet(hostText, u.getHost());
 909                         safeSet(pathText, u.getPath());
 910                         safeSet(userText, u.getUser());
 911                         safeSet(passText, u.getPass());
 912
 913                         if (u.getPort() > 0)
 914                                 portText.setText(Integer.toString(u.getPort()));
 915                         else
 916                                 portText.setText(""); //$NON-NLS-1$
 917
 918                         if (isFile(u))
 919                                 scheme.select(S_FILE);
 920                         else if (isSSH(u))
 921                                 scheme.select(S_SSH);
 922                         else {
 923                                 for (int i = 0; i < DEFAULT_SCHEMES.length; i++) {
 924                                         if (DEFAULT_SCHEMES[i].equals(u.getScheme())) {
 925                                                 scheme.select(i);
 926                                                 break;
 927                                         }
 928                                 }
 929                         }
 930
 931                         updateAuthGroup();
 932                         uri = u;
 933                 } catch (URISyntaxException err) {
 934                         // leave uriText as it is, but clean up underlying uri and
 935                         // decomposed fields
 936                         uri = new URIish();
 937                         hostText.setText(""); //$NON-NLS-1$
 938                         pathText.setText(""); //$NON-NLS-1$
 939                         userText.setText(""); //$NON-NLS-1$
 940                         passText.setText(""); //$NON-NLS-1$
 941                         portText.setText(""); //$NON-NLS-1$
 942                         scheme.select(0);
 943                 } finally {
 944                         eventDepth--;
 945                 }
 946                 checkPage();
 947         }
 948 }