1 files changed, 288 insertions, 0 deletions
diff --git a/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataViewer.java b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataViewer.java
new file mode 100644
index 00000000..8883098a
--- /dev/null
+++ b/BKUCommonGUI/src/main/java/at/gv/egiz/bku/gui/HashDataViewer.java
@@ -0,0 +1,288 @@
+/*
+ * Copyright 2008 Federal Chancellery Austria and
+ * Graz University of Technology
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package at.gv.egiz.bku.gui;
+
+import at.gv.egiz.stal.HashDataInput;
+import java.awt.Component;
+import java.awt.Container;
+import java.awt.Cursor;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Frame;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.nio.charset.Charset;
+import java.text.MessageFormat;
+import java.util.List;
+import java.util.ResourceBundle;
+import javax.swing.GroupLayout;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JEditorPane;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.LayoutStyle;
+import javax.swing.text.Document;
+import javax.swing.text.EditorKit;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ *
+ * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
+ */
+public class HashDataViewer extends JDialog
+        implements ActionListener {
+
+  public static final String PLAINTEXT_FONT = "Monospaced";
+  protected static final Log log = LogFactory.getLog(HashDataViewer.class);
+
+  private static HashDataViewer dialog;
+  
+  protected ResourceBundle messages;
+  
+  /**
+   * 
+   * @param signedReferences currently, only one hashdata input (the first in the list) is displayed
+   */
+  public static void showHashDataInput(List<HashDataInput> hashDataInputs,
+          ResourceBundle messages,
+          ActionListener saveListener,
+          String saveCommand,
+          ActionListener helpListener) {
+    showHashDataInput(null, hashDataInputs, messages, saveListener, saveCommand, helpListener);
+  }
+  
+  /**
+   * 
+   * @param frameComp owner
+   */
+  public static void showHashDataInput(Component frameComp,
+          List<HashDataInput> hashDataInputs,
+          ResourceBundle messages,
+          ActionListener saveListener,
+          String saveCommand,
+          ActionListener helpListener) {
+    
+    Frame frame = null;
+    if (frameComp != null) {
+      JOptionPane.getFrameForComponent(frameComp);
+    }
+    dialog = new HashDataViewer(frame, 
+            messages,
+            hashDataInputs, 
+            saveListener, 
+            saveCommand, 
+            helpListener);
+    dialog.setVisible(true);
+  }
+
+  private HashDataViewer(Frame frame,
+          ResourceBundle messages,
+          List<HashDataInput> hashDataInputs,
+          ActionListener saveListener,
+          String saveCommand,
+          ActionListener helpListener) {
+    super(frame, messages.getString(BKUGUIFacade.WINDOWTITLE_VIEWER), true);
+    this.messages = messages;
+
+    HashDataInput hashData = hashDataInputs.get(0);
+    
+    Charset cs;
+    if (hashData.getEncoding() == null) {
+      cs = Charset.forName("UTF-8");
+    } else {
+      try {
+        cs = Charset.forName(hashData.getEncoding());
+      } catch (Exception ex) {
+        log.debug("charset " + hashData.getEncoding() + " not supported, assuming UTF-8: " + ex.getMessage());
+        cs = Charset.forName("UTF-8");
+      }  
+    }
+    
+    
+    InputStreamReader isr = new InputStreamReader(hashData.getHashDataInput(), cs);
+    Reader content = new BufferedReader(isr);
+  
+    JPanel hashDataPanel = createViewerPanel(
+            messages.getString(BKUGUIFacade.MESSAGE_HASHDATA), 
+            content, 
+            hashData.getMimeType(), 
+            helpListener);
+    JPanel buttonPanel = createButtonPanel(saveListener, saveCommand);
+    initContentPane(new Dimension(600, 400), hashDataPanel, buttonPanel);
+
+    pack();
+    if (frame != null) {
+      setLocationRelativeTo(frame);
+    } else {
+      setLocationByPlatform(true);
+    }
+  }
+
+  private void initContentPane(Dimension preferredSize, JPanel viewerPanel, JPanel buttonPanel) {
+    Container contentPane = getContentPane();
+    contentPane.setPreferredSize(preferredSize);
+
+    GroupLayout mainLayout = new GroupLayout(contentPane);
+    contentPane.setLayout(mainLayout);
+
+    mainLayout.setHorizontalGroup(
+            mainLayout.createSequentialGroup().addContainerGap().addGroup(
+            mainLayout.createParallelGroup(GroupLayout.Alignment.LEADING).addComponent(viewerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(buttonPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)).addContainerGap());
+    mainLayout.setVerticalGroup(
+            mainLayout.createSequentialGroup()
+              .addContainerGap()
+              .addComponent(viewerPanel, 0, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
+              .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
+              .addComponent(buttonPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
+              .addContainerGap());
+  }
+
+  /**
+   * 
+   * @param messages
+   * @param content
+   * @param mimeType defaults to text/plain if null 
+   * @param encoding must be null if document contains charset declaration (e.g. HTML page), otherwise the parser crashes
+   * @param helpListener may be null
+   * @return
+   */
+  private JPanel createViewerPanel(String viewerLabelText, 
+          Reader content, 
+          String mimeType, 
+          final ActionListener helpListener) {
+    log.debug("viewer dialog: " + mimeType);
+
+    if (mimeType == null) {
+      mimeType = "text/plain";
+    } else if ("application/xhtml+xml".equals(mimeType)) {
+      mimeType = "text/html";
+    }
+
+    JEditorPane viewer = new JEditorPane();
+    viewer.setEditable(false);
+    viewer.setContentType(mimeType);
+    if ("text/plain".equals(mimeType)) {
+      viewer.setFont(new Font(PLAINTEXT_FONT, viewer.getFont().getStyle(), viewer.getFont().getSize()));
+    }
+
+    EditorKit editorKit = viewer.getEditorKit();
+    Document document = editorKit.createDefaultDocument();
+//    document.putProperty("IgnoreCharsetDirective", new Boolean(true));
+    
+    try {
+        viewer.read(content, document);
+        content.close();
+    } catch (Exception ex) {
+      log.error(ex.getMessage(), ex);
+      String p = messages.getString(BKUGUIFacade.ERR_VIEWER);
+      viewer.setText(MessageFormat.format(p, ex.getMessage()));
+    }
+
+    JScrollPane scrollPane = new JScrollPane(viewer);
+    scrollPane.setPreferredSize(viewer.getPreferredSize());
+    scrollPane.setAlignmentX(LEFT_ALIGNMENT);
+    viewer.setCaretPosition(0);
+
+    JLabel viewerLabel = new JLabel();
+    viewerLabel.setText(viewerLabelText);
+    viewerLabel.setFont(viewerLabel.getFont().deriveFont(viewerLabel.getFont().getStyle() | java.awt.Font.BOLD));
+    viewerLabel.setLabelFor(viewer);
+
+    JPanel viewerPanel = new JPanel();
+    GroupLayout viewerPanelLayout = new GroupLayout(viewerPanel);
+    viewerPanel.setLayout(viewerPanelLayout);
+
+    if (helpListener != null) {
+      JLabel helpLabel = new JLabel();
+      helpLabel.setIcon(new ImageIcon(getClass().getResource(BKUGUIFacade.HELP_IMG)));
+      helpLabel.addMouseListener(new MouseAdapter() {
+
+        @Override
+        public void mouseClicked(MouseEvent arg0) {
+            ActionEvent e = new ActionEvent(this, ActionEvent.ACTION_PERFORMED, BKUGUIFacade.HELP_HASHDATAVIEWER);
+            helpListener.actionPerformed(e);
+        }
+      });
+      helpLabel.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
+      viewerPanelLayout.setHorizontalGroup(
+            viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING).addGroup(viewerPanelLayout.createSequentialGroup().addComponent(viewerLabel).addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED, 0, Short.MAX_VALUE).addComponent(helpLabel)).addComponent(scrollPane)); //, 0, 0, Short.MAX_VALUE));
+      viewerPanelLayout.setVerticalGroup(
+            viewerPanelLayout.createSequentialGroup()
+              .addGroup(viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
+                .addComponent(viewerLabel)
+                .addComponent(helpLabel))
+              .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
+              .addComponent(scrollPane)); 
+    } else {
+      viewerPanelLayout.setHorizontalGroup(
+            viewerPanelLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
+              .addComponent(viewerLabel)
+              .addComponent(scrollPane)); 
+      viewerPanelLayout.setVerticalGroup(
+            viewerPanelLayout.createSequentialGroup()
+              .addComponent(viewerLabel)
+              .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
+              .addComponent(scrollPane)); 
+
+    }
+    
+    return viewerPanel;
+  }
+  
+  private JPanel createButtonPanel(ActionListener saveListener, String saveCommand) {
+    JButton closeButton = new JButton();
+    closeButton.setText(messages.getString(BKUGUIFacade.BUTTON_CLOSE));
+    closeButton.addActionListener(this);
+
+    JButton saveButton = new JButton();
+    saveButton.setText(messages.getString(BKUGUIFacade.BUTTON_SAVE));
+    saveButton.setActionCommand(saveCommand);
+    saveButton.addActionListener(saveListener);
+
+    int buttonSize = closeButton.getPreferredSize().width;
+    if (saveButton.getPreferredSize().width > buttonSize) {
+      buttonSize = saveButton.getPreferredSize().width;
+    }
+
+    JPanel buttonPanel = new JPanel();
+    GroupLayout buttonPanelLayout = new GroupLayout(buttonPanel);
+    buttonPanel.setLayout(buttonPanelLayout);
+
+    buttonPanelLayout.setHorizontalGroup(
+            buttonPanelLayout.createSequentialGroup().addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addComponent(saveButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE).addPreferredGap(LayoutStyle.ComponentPlacement.RELATED).addComponent(closeButton, GroupLayout.PREFERRED_SIZE, buttonSize, GroupLayout.PREFERRED_SIZE));
+    buttonPanelLayout.setVerticalGroup(
+            buttonPanelLayout.createParallelGroup(GroupLayout.Alignment.BASELINE).addComponent(saveButton).addComponent(closeButton));
+
+    return buttonPanel;
+  }
+
+  @Override
+  public void actionPerformed(ActionEvent e) {
+    HashDataViewer.dialog.setVisible(false);
+  }
+}