closes #621: error message if user doesn't have javafx and exit gui

iped-app/resources/localization/iped-desktop-messages.properties

@@ -330,6 +330,7 @@ MetadataPanel.FilterProps=Properties
 MetadataPanel.FilterValues=Values
 MetadataPanel.CopyClipboard=Copy to clipboard
 MetadataPanel.UpdateWarn=[Click on Update]
+NoJavaFX.Error=This application needs JavaFX to be installed!
 ProcessingNotFinished.title=Processing not finished
 ProcessingNotFinished.message=Processing didn't finish successfully. Many case items could be missing, including allocated.\nTry to resume it with --continue option.
 ProcessingNotFinished.cases=\ Following cases are affected:\n

iped-app/resources/localization/iped-desktop-messages_pt_BR.properties

@@ -331,6 +331,7 @@ MetadataPanel.Filter=Filtrar:
 MetadataPanel.FilterProps=Propriedades
 MetadataPanel.FilterValues=Valores
 MetadataPanel.CopyClipboard=Copiar para a área transf.
+NoJavaFX.Error=Esta aplicação precisa que o JavaFX esteja instalado!
 ProcessingNotFinished.title=Processamento não finalizado
 ProcessingNotFinished.message=Processamento não finalizou com sucesso. Muitos itens podem estar ausentes, incluindo alocados.\nTente retomá-lo com a opção --continue.
 ProcessingNotFinished.cases=\ Os seguintes casos são afetados:\n

iped-app/src/main/java/dpf/sp/gpinf/indexer/desktop/App.java

@@ -57,6 +57,7 @@
 import javax.swing.JDialog;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
+import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JProgressBar;
 import javax.swing.JScrollPane;
@@ -123,6 +124,7 @@
 import dpf.sp.gpinf.indexer.ui.hitsViewer.HitsTable;
 import dpf.sp.gpinf.indexer.ui.hitsViewer.HitsTableModel;
 import dpf.sp.gpinf.indexer.util.IconUtil;
+import dpf.sp.gpinf.indexer.util.Util;
 import iped3.IIPEDSource;
 import iped3.IItem;
 import iped3.IItemId;
@@ -390,6 +392,11 @@ private void destroy() {
 
     public void createGUI() {
 
+        if (!Util.isJavaFXPresent()) {
+            JOptionPane.showMessageDialog(this, Messages.get("NoJavaFX.Error"), "Error", JOptionPane.ERROR_MESSAGE);
+            System.exit(1);
+        }
+
         String tab = "     "; //$NON-NLS-1$
         this.setTitle(Versao.APP_NAME + tab + "[" + Messages.getString("App.Case") + ": " + casesPathFile + "]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
         this.setSize(new Dimension(800, 600));

iped-app/src/main/java/dpf/sp/gpinf/indexer/desktop/ViewerController.java

@@ -37,15 +37,13 @@
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.LibreOfficeViewer.NotSupported32BitPlatformExcepion;
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.MetadataViewer;
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.MsgViewer;
-import dpf.sp.gpinf.indexer.ui.fileViewer.frames.NoJavaFXViewer;
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.ReferencedFileViewer;
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.TextViewer;
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.TiffViewer;
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.TikaHtmlViewer;
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.Viewer;
 import dpf.sp.gpinf.indexer.ui.fileViewer.frames.ViewersRepository;
 import dpf.sp.gpinf.indexer.ui.fileViewer.util.AppSearchParams;
-import dpf.sp.gpinf.indexer.util.JarLoader;
 import dpf.sp.gpinf.indexer.util.LibreOfficeFinder;
 import iped3.io.IStreamSource;
 
@@ -85,22 +83,15 @@ public boolean isFixed() {
         });
         viewers.add(viewersRepository = new ViewersRepository());
 
-        boolean javaFX = new JarLoader().loadJavaFX();
-
         // These are content-specific viewers (inside a single ViewersRepository)
         viewersRepository.addViewer(new ImageViewer());
         viewersRepository.addViewer(new CADViewer());
-        if (javaFX) {
-            viewersRepository.addViewer(new HtmlViewer());
-            viewersRepository.addViewer(new EmailViewer());
-            viewersRepository.addViewer(new MsgViewer());
-            linkViewer = new HtmlLinkViewer(new AttachmentSearcherImpl());
-            viewersRepository.addViewer(linkViewer);
-            viewersRepository.addViewer(new TikaHtmlViewer());
-        } else {
-            viewersRepository.addViewer(new NoJavaFXViewer());
-            linkViewer = null;
-        }
+        viewersRepository.addViewer(new HtmlViewer());
+        viewersRepository.addViewer(new EmailViewer());
+        viewersRepository.addViewer(new MsgViewer());
+        linkViewer = new HtmlLinkViewer(new AttachmentSearcherImpl());
+        viewersRepository.addViewer(linkViewer);
+        viewersRepository.addViewer(new TikaHtmlViewer());
         viewersRepository.addViewer(new IcePDFViewer());
         viewersRepository.addViewer(new TiffViewer());
         viewersRepository.addViewer(new ReferencedFileViewer(viewersRepository, new AttachmentSearcherImpl()));

iped-engine/src/main/java/dpf/sp/gpinf/indexer/util/Util.java

@@ -52,7 +52,6 @@
 import org.apache.poi.poifs.filesystem.DocumentEntry;
 import org.apache.poi.poifs.filesystem.DocumentInputStream;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
-import org.apache.tika.io.TemporaryResources;
 import org.apache.tika.io.TikaInputStream;
 import org.apache.tika.metadata.Metadata;
 import org.apache.tika.mime.MediaType;
@@ -103,6 +102,16 @@ public static String getJavaVersionWarn() {
         return null;
     }
 
+    public static boolean isJavaFXPresent() {
+        try {
+            Class.forName("javafx.application.Platform");
+            return true;
+
+        } catch (Throwable t) {
+            return false;
+        }
+    }
+
     public static String getRootName(String path) {
         int fromIndex = path.charAt(0) == '/' || path.charAt(0) == '\\' ? 1 : 0;
         int slashIdx = path.indexOf('/', fromIndex);