How to use

msgError

method

in

com.igormaznitsa.mindmap.swing.panel.DialogProvider

 @Override
 public void actionPerformed (@Nonnull final ActionEvent e) {
  try {
   UiUtils.browseURI(LINK, false);
  }
  catch (Exception ex) {
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't open link! You can try to open it manually:\n" + LINK.toASCIIString());
  }
 }
};

private void buttonImportActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonImportActionPerformed
 final File toOpen = DialogProviderManager.getInstance().getDialogProvider().msgOpenFileDialog(null, "note-editor", UiUtils.BUNDLE.getString("PlainTextEditor.buttonLoadActionPerformed.title"), null, true, TEXT_FILE_FILTER, "Open"); //NOI18N
 if (toOpen != null) {
  try {
   final String text = FileUtils.readFileToString(toOpen, "UTF-8"); //NOI18N
   this.editorPane.setText(text);
  } catch (Exception ex) {
   LOGGER.error("Error during text file loading", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, UiUtils.BUNDLE.getString("PlainTextEditor.buttonLoadActionPerformed.msgError"));
  }
 }
}//GEN-LAST:event_buttonImportActionPerformed

@Nullable
@Override
public File createMindMapFile(@Nullable final File folder) {
 final JFileChooser chooser = new JFileChooser(folder);
 chooser.setDialogTitle("Create new Mind Map");
 chooser.setFileFilter(MMDEditor.MMD_FILE_FILTER);
 chooser.setMultiSelectionEnabled(false);
 chooser.setApproveButtonText("Create");
 File result = null;
 if (chooser.showSaveDialog(Main.getApplicationFrame()) == JFileChooser.APPROVE_OPTION) {
  File file = chooser.getSelectedFile();
  if (!file.getName().endsWith(".mmd")) { //NOI18N
   file = new File(file.getAbsolutePath() + ".mmd"); //NOI18N
  }
  if (file.exists()) {
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "File '" + file + "' already exists!");
  } else {
   try {
    final MindMap mindMap = new MindMap(null, true);
    final String text = mindMap.write(new StringWriter()).toString();
    SystemUtils.saveUTFText(file, text);
    result = file;
   } catch (IOException ex) {
    DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't save mind map into file '" + file.getName() + "'");
   }
  }
 }
 return result;
}

private void buttonBrowseActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonBrowseActionPerformed
 final String selectedText = this.editorPane.getSelectedText().trim();
 try {
  UiUtils.browseURI(URI.create(selectedText), false);
 } catch (Exception ex) {
  LOGGER.error("Can't open link : " + selectedText); //NOI18N
  DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't browse link : " + selectedText);
 }
}//GEN-LAST:event_buttonBrowseActionPerformed

 @Override
 public void actionPerformed(@Nonnull final ActionEvent e) {
  try {
   title.save();
  } catch (IOException ex) {
   LOGGER.error("Can't save file", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't save document, may be it is read-only! See log!");
  }
 }
});

 @Override
 public void actionPerformed(@Nonnull final ActionEvent e) {
  try {
   title.saveAs();
  } catch (IOException ex) {
   LOGGER.error("Can't save file", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't save document, may be it is read-only! See log!");
  }
 }
});

@Nullable
public static File checkFileAndExtension(@Nonnull final MindMapPanel panel, @Nullable final File file, @Nonnull final String dottedExtension) {
 if (file == null) {
  return null;
 }
 if (file.isDirectory()) {
  panel.getController().getDialogProvider(panel).msgError(null, String.format(Texts.getString("AbstractMindMapExporter.msgErrorItIsDirectory"), file.getAbsolutePath()));
  return null;
 }
 if (file.isFile()) {
  if (!panel.getController().getDialogProvider(panel).msgConfirmOkCancel(null, Texts.getString("AbstractMindMapExporter.titleSaveAs"), String.format(Texts.getString("AbstractMindMapExporter.msgAlreadyExistsWantToReplace"), file.getAbsolutePath()))) {
   return null;
  }
 } else if (!file.getName().toLowerCase(Locale.ENGLISH).endsWith(dottedExtension.toLowerCase(Locale.ENGLISH))) {
  if (panel.getController().getDialogProvider(panel).msgConfirmYesNo(null, Texts.getString("AbstractMindMapExporter.msgTitleAddExtension"), String.format(Texts.getString("AbstractMindMapExporter.msgAddExtensionQuestion"), dottedExtension))) {
   return new File(file.getParent(), file.getName() + dottedExtension);
  }
 }
 return file;
}

private void menuNewProjectActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_menuNewProjectActionPerformed
 final JFileChooser folderChooser = new JFileChooser();
 folderChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
 folderChooser.setDialogTitle("Create project folder");
 folderChooser.setDialogType(JFileChooser.SAVE_DIALOG);
 folderChooser.setApproveButtonText("Create");
 folderChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
 if (folderChooser.showSaveDialog(Main.getApplicationFrame()) == JFileChooser.APPROVE_OPTION) {
  final File file = folderChooser.getSelectedFile();
  if (file.isDirectory()) {
   if (file.list().length > 0) {
    DialogProviderManager.getInstance().getDialogProvider().msgError(null, "File '" + file.getName() + "' already exists and non-empty!");
   } else {
    prepareAndOpenProjectFolder(file);
   }
  } else if (file.mkdirs()) {
   prepareAndOpenProjectFolder(file);
  } else {
   LOGGER.error("Can't create folder : " + file); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't create folder: " + file);
  }
 }
}//GEN-LAST:event_menuNewProjectActionPerformed

private void buttonExportActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonExportActionPerformed
 final File toSave = DialogProviderManager.getInstance().getDialogProvider().msgSaveFileDialog(null, "note-editor", UiUtils.BUNDLE.getString("PlainTextEditor.buttonSaveActionPerformed.saveTitle"), null, true, TEXT_FILE_FILTER, "Save"); //NOI18N
 if (toSave != null) {
  try {
   final String text = getText();
   FileUtils.writeStringToFile(toSave, text, "UTF-8"); //NOI18N
  } catch (Exception ex) {
   LOGGER.error("Error during text file saving", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, UiUtils.BUNDLE.getString("PlainTextEditor.buttonSaveActionPerformed.msgError"));
  }
 }
}//GEN-LAST:event_buttonExportActionPerformed

private void menuSaveAllActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_menuSaveAllActionPerformed
 for (final TabTitle t : this.tabPane) {
  try {
   t.save();
  } catch (IOException ex) {
   LOGGER.error("Can't save file", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't save document, may be it is read-only! See log!");
  }
 }
}//GEN-LAST:event_menuSaveAllActionPerformed

@Nullable
public static FileEditPanel.DataContainer editFilePath(@Nonnull final String title, @Nullable final File projectFolder, @Nullable final FileEditPanel.DataContainer data) {
 final FileEditPanel filePathEditor = new FileEditPanel(projectFolder, data);
 filePathEditor.doLayout();
 filePathEditor.setPreferredSize(new Dimension(450, filePathEditor.getPreferredSize().height));
 FileEditPanel.DataContainer result = null;
 if (DialogProviderManager.getInstance().getDialogProvider().msgOkCancel(null, title, filePathEditor)) {
  result = filePathEditor.getData();
  if (!result.isValid()) {
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, String.format(BUNDLE.getString("MMDGraphEditor.editFileLinkForTopic.errorCantFindFile"), result.getFilePathWithLine().getPath()));
   result = null;
  }
 }
 return result;
}

@Nullable
public static MMapURI editURI(@Nonnull final String title, @Nullable final MMapURI uri) {
 final UriEditPanel textEditor = new UriEditPanel(uri == null ? null : uri.asString(false, false));
 textEditor.doLayout();
 textEditor.setPreferredSize(new Dimension(450, textEditor.getPreferredSize().height));
 if (DialogProviderManager.getInstance().getDialogProvider().msgOkCancel(null, title, textEditor)) {
  final String text = textEditor.getText();
  if (text.isEmpty()) {
   return EMPTY_URI;
  }
  try {
   return new MMapURI(text.trim());
  }
  catch (URISyntaxException ex) {
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, String.format(BUNDLE.getString("NbUtils.errMsgIllegalURI"), text));
   return null;
  }
 } else {
  return null;
 }
}

 @Override
 public void actionPerformed(@Nonnull final ActionEvent e) {
  try {
   if (processor == null) {
    panel.removeAllSelection();
    final MindMap map = doImport(panel, dialogProvider, actionTopic, selectedTopics);
    if (map != null) {
     SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run() {
       panel.setModel(map, false);
       panel.updateView(true);
       final Topic root = map.getRoot();
       if (root != null) {
        panel.focusTo(root);
       }
      }
     });
    }
   } else {
    processor.doJob(theInstance, panel, dialogProvider, actionTopic, selectedTopics);
   }
  } catch (Exception ex) {
   LOGGER.error("Error during map import", ex); //NOI18N
   dialogProvider.msgError(null, Texts.getString("MMDGraphEditor.makePopUp.errMsgCantImport"));
  }
 }
});

private void buttonImportFromFileActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonImportFromFileActionPerformed
 final File file = DialogProviderManager.getInstance().getDialogProvider().msgOpenFileDialog(this, "importProperties", "Import settings", null, true, new PropertiesFileFilter(), "Open");
 if (file != null) {
  try {
   load(new PropertiesPreferences("SciaReto", FileUtils.readFileToString(file, "UTF-8")));
  } catch (final Exception ex) {
   LOGGER.error("Can't import settings", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't import settings [" + ex.getMessage() + ']');
  }
 }
}//GEN-LAST:event_buttonImportFromFileActionPerformed

@Override
@Nullable
public MindMap doImport(@Nonnull final MindMapPanel panel, @Nonnull final DialogProvider dialogProvider, @Nullable final Topic actionTopic, @Nonnull @MustNotContainNull final Topic[] selectedTopics) throws Exception {
 final File file = this.selectFileForExtension(panel, Texts.getString("MMDImporters.Mindmup2MindMap.openDialogTitle"), "mup", "Mindmup files (.MUP)", Texts.getString("MMDImporters.ApproveImport"));
 if (file == null) {
  return null;
 }
 final JSONObject parsedJson;
 parsedJson = new JSONObject(FileUtils.readFileToString(file, "UTF-8"));
 MindMap resultedMap = null;
 final Number formatVersion = parsedJson.getNumber("formatVersion");
 if (formatVersion == null) {
  dialogProvider.msgError(null, Texts.getString("MMDImporters.Mindmup2MindMap.Error.WrongFormat"));
 } else {
  resultedMap = new MindMap(null, true);
  resultedMap.setAttribute(MindMapPanel.ATTR_SHOW_JUMPS, "true");
  final Topic mindMapRoot = Assertions.assertNotNull(resultedMap.getRoot());
  final Map<Long, Topic> mapTopicId = new HashMap<Long, Topic>();
  parseTopic(resultedMap, null, mindMapRoot, parsedJson, mapTopicId);
  if (!mindMapRoot.getExtras().containsKey(Extra.ExtraType.FILE)) {
   mindMapRoot.setExtra(new ExtraFile(new MMapURI(null, file, null)));
  }
  if (parsedJson.has("links")) {
   final JSONArray links = parsedJson.getJSONArray("links");
   processLinks(resultedMap, links, mapTopicId);
  }
 }
 return resultedMap;
}

private void buttonExportToFileActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonExportToFileActionPerformed
 File file = DialogProviderManager.getInstance().getDialogProvider().msgSaveFileDialog(this, "exportProperties", "Export settings", null, true, new PropertiesFileFilter(), "Save");
 if (file != null) {
  if (!file.getName().toLowerCase(Locale.ENGLISH).endsWith(".properties")) { //NOI18N
   final Boolean addExt = DialogProviderManager.getInstance().getDialogProvider().msgConfirmYesNoCancel(this, "Add extension", "Add '.properties' extension?");
   if (addExt == null) {
    return;
   }
   if (addExt) {
    file = new File(file.getAbsolutePath() + ".properties"); //NOI18N
   }
  }
  if (file.exists() && !DialogProviderManager.getInstance().getDialogProvider().msgConfirmOkCancel(this, "Override file", String.format("File %s exists, to override it?", file.getName()))) {
   return;
  }
  final PropertiesPreferences prefs = new PropertiesPreferences("SciaReto editor settings");
  final MindMapPanelConfig cfg = fillBySettings(new MindMapPanelConfig(), prefs);
  cfg.saveTo(prefs);
  try {
   FileUtils.write(file, prefs.toString(), "UTF-8");
  } catch (final Exception ex) {
   LOGGER.error("Can't export settings", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(this, "Can't export settings [" + ex.getMessage() + ']'); //NOI18N
  }
 }
}//GEN-LAST:event_buttonExportToFileActionPerformed

private void menuSaveAsActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_menuSaveAsActionPerformed
 final int index = this.tabPane.getSelectedIndex();
 if (index >= 0) {
  try {
   ((TabTitle) this.tabPane.getTabComponentAt(index)).saveAs();
  } catch (IOException ex) {
   LOGGER.error("Can't save file", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't save document, may be it is read-only! See log!");
  }
 }
}//GEN-LAST:event_menuSaveAsActionPerformed

private void menuSaveActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_menuSaveActionPerformed
 final int index = this.tabPane.getSelectedIndex();
 if (index >= 0) {
  try {
   ((TabTitle) this.tabPane.getTabComponentAt(index)).save();
  } catch (IOException ex) {
   LOGGER.error("Can't save file", ex); //NOI18N
   DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't save document, may be it is read-only! See log!");
  }
 }
}//GEN-LAST:event_menuSaveActionPerformed

 @Override
 public void actionPerformed(@Nonnull final ActionEvent e) {
  try {
   if (processor == null) {
    final JComponent options = makeOptions();
    if (options != null && !dialogProvider.msgOkCancel(null, getName(panel, actionTopic, selectedTopics), options)) {
     return;
    }
    doExport(panel, options, null);
   } else {
    processor.doJob(theInstance, panel, dialogProvider, actionTopic, selectedTopics);
   }
  } catch (Exception ex) {
   LOGGER.error("Error during map export", ex); //NOI18N
   dialogProvider.msgError(null, Texts.getString("MMDGraphEditor.makePopUp.errMsgCantExport"));
  }
 }
});

} else {
 LOGGER.error("Can't find folder : " + folder); //NOI18N
 DialogProviderManager.getInstance().getDialogProvider().msgError(null, "Can't find project folder!");