jreepadview.java

一个简单好用的java语言实现的个人日志管理系统

  }
  public JreepadSearcher.JreepadSearchResult[] getSearchResults()
  {
    return searcher.getSearchResults();
  }

  public void addChildrenFromTextFiles(File[] inFiles) throws IOException
  {
    //DEL storeForUndo();
	for(int i=0; i<inFiles.length; i++)
      getCurrentNode().addChildFromTextFile(new InputStreamReader(new FileInputStream(inFiles[i]), getPrefs().getEncoding())
                         , inFiles[i].getName());
    treeModel.reload(currentNode);
    tree.expandPath(tree.getSelectionPath());
  }
  
  public void addChild(JreepadNode newKid)
  {
    //DEL storeForUndo();
	getCurrentNode().addChild(newKid);
    treeModel.reload(currentNode);
    tree.expandPath(tree.getSelectionPath());
  }

  public void addChildrenFromListTextFile(InputStreamReader inFile) throws IOException
  {
    //DEL storeForUndo();

    BufferedReader bReader = new BufferedReader(inFile);

    String curLine;
    while((curLine = bReader.readLine())!=null)
      if(curLine.trim().length() > 0)
        getCurrentNode().addChild(new JreepadNode(curLine.trim(), "", getCurrentNode()));

    treeModel.reload(currentNode);
    tree.expandPath(tree.getSelectionPath());
  }

  public String getSelectedTextInArticle()
  {
    switch(currentNode.getArticleMode())
    {
      case JreepadNode.ARTICLEMODE_CSV:
        int x = editorPaneCsv.getSelectedColumn();
        int y = editorPaneCsv.getSelectedRow();
        if(x==-1 || y ==-1)
          return "";
        return editorPaneCsv.getValueAt(y,x).toString();
      case JreepadNode.ARTICLEMODE_HTML:
        return editorPaneHtml.getSelectedText();
      case JreepadNode.ARTICLEMODE_ORDINARY:
      default:
        return editorPanePlainText.getSelectedText();
    }
  }
  
  public static JreepadPrefs getPrefs()
  {
    return prefs;
  }
  public static void setPrefs(JreepadPrefs thesePrefs)
  {
    prefs = thesePrefs;
  }
  

/*

    DEPRECATED - I wrote this before discovering Java's UndoManager.



  // Stuff concerned with undo
  public void undoAction()
  {
    if(!canWeUndo())
      return;
  
    // Swap the old root / selectionpath / expandedpaths for the current ones
    JreepadNode tempRoot = root;
    root = oldRootForUndo;
    oldRootForUndo = tempRoot;

    // Fire a tree-structure-changed event for the entire tree
    treeModel.setRoot(root);
    treeModel.reload(root);
    // Set the correct selection and expanded paths
    tree.setSelectionPath(oldSelectedPath); // I hope this ends up firing the setCurrentNode() function...

    editorPanePlainText.setText(currentNode.getContent());
    editorPaneHtml.setText(currentNode.getContent());
    repaint();
  }
  public boolean canWeUndo()
  {
    return oldRootForUndo != null;
  }
  private void storeForUndo()
  {
    // Use JreepadNode.getCopy() on the root node to get a copy of the whole tree
    oldRootForUndo = root.getCopy();
    // Also get the tree's entire set of open TreePaths and selected TreePaths
    oldSelectedPath = tree.getSelectionPath();
  }
  void clearUndoCache()
  {
    oldRootForUndo = null;
  }
  // End of: stuff concerned with undo

*/



  // Stuff concerned with linking
  public void webSearchTextSelectedInArticle()
  {
    // JComponent treeOrArticle;
    String url = getSelectedTextInArticle();

    if(url==null || url.length()==0)
      url = currentNode.getTitle();
  
    if((url == null) && (currentNode.getArticleMode()==JreepadNode.ARTICLEMODE_ORDINARY))
    {
      try
      {
      
      String text = getEditorPaneText();
      int startpos = editorPanePlainText.getCaretPosition();
      int endpos = startpos;
      if(text.length()>0)
      {
        // Select the character before/after the current position, and grow it until we hit whitespace...
        while(startpos>0 && !Character.isWhitespace(editorPanePlainText.getText(startpos-1,1).charAt(0)))
          startpos--;
        while(endpos<(text.length()) && !Character.isWhitespace(editorPanePlainText.getText(endpos,1).charAt(0)))
          endpos++;
        if(endpos>startpos)
        {
          editorPanePlainText.setSelectionStart(startpos);
          editorPanePlainText.setSelectionEnd(endpos);
          url = editorPanePlainText.getSelectedText();
        }
      }
      }
      catch(BadLocationException err)
      {
System.out.println(err);
      }
    }

    if(url==null || !(url.length()>0))
      url = currentNode.getTitle();

    webSearchText(url);
  }
  public void webSearchText(String text)
  {
    openURL("http://" + getPrefs().webSearchPrefix + text + getPrefs().webSearchPostfix);
  }
  public void openURLSelectedInArticle()
  {
    String url = getSelectedTextInArticle();
    if((url == null) && (currentNode.getArticleMode()==JreepadNode.ARTICLEMODE_ORDINARY))
    {
      try
      {
      
      String text = getEditorPaneText();
      int startpos = editorPanePlainText.getCaretPosition();
      int endpos = startpos;
      if(text != null)
      {
        // Select the character before/after the current position, and grow it until we hit whitespace...
        while(startpos>0 && !Character.isWhitespace(editorPanePlainText.getText(startpos-1,1).charAt(0)))
          startpos--;
        while(endpos<(text.length()) && !Character.isWhitespace(editorPanePlainText.getText(endpos,1).charAt(0)))
          endpos++;
        if(endpos>startpos)
        {
          editorPanePlainText.setSelectionStart(startpos);
          editorPanePlainText.setSelectionEnd(endpos);
          url = editorPanePlainText.getSelectedText();
        }
      }
      }
      catch(BadLocationException err)
      {
      }
    }
    openURL(url);
  }
  public static boolean isPureWord(String in)
  {
    char[] c = in.toCharArray();
    for(int i=0; i<c.length; i++)
      if(c[i]==':' || c[i]=='/' || c[i]=='[' || c[i]==']')
        return false;
    return true;
  }
  public static boolean isWikiWord(String in)
  {
    if(in.length()>4 && in.startsWith("[[") && in.endsWith("]]"))
      return true;

    char[] c = in.toCharArray();
    int uppers = 0;
    boolean currentlyUpper = false;
    for(int i=0; i<c.length; i++)
      if(!Character.isLetter(c[i]))
        return false;
      else if(i==0 && !Character.isUpperCase(c[i]))
        return false;
      else
        if(currentlyUpper && Character.isLowerCase(c[i]))
        {
          currentlyUpper = false;
          uppers++;
        }
        else if(!currentlyUpper && Character.isUpperCase(c[i]))
        {
          currentlyUpper = true;
        }
    return uppers>1;
  }
  public void openURL(String url)
  {
    if(url==null || url=="")
      return;
    url = url.trim();

    // Wiki-like links
    if(isWikiWord(url))
    {
      followWikiLink(url, prefs.wikiBehaviourActive);
      return;
    }
//    if(url.length()>4 && url.startsWith("[[") && url.endsWith("]]"))
//    {
//      followWikiLink(url.substring(2, url.length()-2));
//      return;
//    }
    if(isPureWord(url))
    {
      if(prefs.defaultSearchMode == 0)
        webSearchText(url);
      else
        followWikiLink(url, false);
      return;
    }
    
    // Strip quotes off
    if(url.length()>2 && url.startsWith("\"") && url.endsWith("\""))
      url = url.substring(1, url.length()-1);

    // Treepad node:// links
    if(url.startsWith("node://"))
    {
      if(!followTreepadInternalLink(url))
	    JOptionPane.showMessageDialog(this, 
	            JreepadViewer.lang.getString("MSG_NODE_NOT_FOUND"), 
	            JreepadViewer.lang.getString("TITLE_NODE_NOT_FOUND"),
	            JOptionPane.ERROR_MESSAGE);
      return;
    }
    
    // It's probably a web-link, so let's do something to it and then try and launch it
    
/*

//  NOTE:
//  I haven't been able to get this file:// method to work, on Windows 2000 or on Mac OSX.
//  So I'm disactivating it for now.

    // Firstly we use Kami's method for attempting to open file:// links
    if(url.startsWith("file://"))
    {
      url =  getPrefs().openLocation.getParentFile().getPath() + System.getProperty("file.separator")+  url.substring(7);
      try
      {
        BrowserLauncher.openURL(url.toString());
      }
      catch(IOException err)
      {
        JOptionPane.showMessageDialog(this, "I/O error while opening URL:\n"+url+"\n\nThe \"BrowserLauncher\" used to open a URL is an open-source Java library \nseparate from Jreepad itself - i.e. a separate Sourceforge project. \nIt may be a good idea to submit a bug report to\nhttp://sourceforge.net/projects/browserlauncher\n\nIf you do, please remember to supply information about the operating system\nyou are using - which type, and which version.", "Error" , JOptionPane.ERROR_MESSAGE);
      }
    }
    else
    {
*/
		char[] curl = url.toCharArray();
		StringBuffer surl = new StringBuffer();
		for(int i=0; i<curl.length; i++)
		  if(curl[i]==' ')
			surl.append("%20");
		  else
			surl.append(curl[i]);
		try
		{
		  BrowserLauncher.openURL(surl.toString());
		}
		catch(IOException err)
		{
		  JOptionPane.showMessageDialog(this, "I/O error while opening URL:\n"+surl+"\n\nThe \"BrowserLauncher\" used to open a URL is an open-source Java library \nseparate from Jreepad itself - i.e. a separate Sourceforge project. \nIt may be a good idea to submit a bug report to\nhttp://sourceforge.net/projects/browserlauncher\n\nIf you do, please remember to supply information about the operating system\nyou are using - which type, and which version.", "Error" , JOptionPane.ERROR_MESSAGE);
		}
//    }
  }

  public boolean followTreepadInternalLink(String url)
  {
      url = url.substring(7);
      // Split it at slashes, and then add each one to the new TreePath object as we go
      Vector pathNames = new Vector();
      StringBuffer buf = new StringBuffer();
      char[] curl = url.toCharArray();
      for(int i=0; i<curl.length; i++)
        if(curl[i]=='/')
        {
          pathNames.add(buf.toString());
          buf = new StringBuffer();
        }
        else
          buf.append(curl[i]);
      if(buf.length()>0)
        pathNames.add(buf.toString());

//      System.out.println(pathNames);

      // OK, so we've got the names into an array. Now how do we actually follow the path?
      if(pathNames.size()<1 || !((String)pathNames.get(0)).equals(root.getTitle()))
        return false;
      TreePath goTo = new TreePath(root);
      JreepadNode nextNode = root;
      for(int i=1; i<pathNames.size(); i++)
      {
        nextNode = nextNode.getChildByTitle((String)pathNames.get(i));
        if(nextNode == null)
          return false;
        goTo = goTo.pathByAddingChild(nextNode);
      }
      tree.setSelectionPath(goTo);
	  tree.scrollPathToVisible(goTo);
	  return true;
  }
  // End of: stuff concerned with linking

  // Searching (for wikilike action)
  public void followWikiLink(String text, boolean noNeedToConfirm)
  {
    if(text.length()>4 && text.startsWith("[[") && text.endsWith("]]"))
      text = text.substring(2, text.length()-2);

    TreePath tp = findNearestNodeTitled(text);
    if(tp == null)
    {
	  if(noNeedToConfirm || JOptionPane.showConfirmDialog(this, JreepadViewer.lang.getString("TITLE_NODE_NOT_FOUND_PROMPT_CREATE"), JreepadViewer.lang.getString("MSG_NODE_NOT_FOUND") , JOptionPane.YES_NO_OPTION, JOptionPane.ERROR_MESSAGE)
	             == JOptionPane.YES_OPTION)
	  {
        JreepadNode newNode;
        TreePath newPath;
	    newNode = new JreepadNode(text, "", currentNode);
	    addChild(newNode);
	    TreePath leadPath = tree.getLeadSelectionPath();
	    if(leadPath != null)
	      newPath = leadPath.pathByAddingChild(newNode);
	    else
	      newPath = new TreePath(newNode);
	    
	    // Now we need to select it... how do we do that?
	    tree.setSelectionPath(newPath);
	    tree.scrollPathToVisible(newPath);
	  }
    }
    else
      tree.setSelectionPath(tp);
  }
  public TreePath findNearestNodeTitled(String text)
  {
    TreePath curPath = tree.getLeadSelectionPath();
    TreePath tp;
    while(curPath != null && curPath.getPathCount()>0)
    {
      tp = findChildTitled(text, curPath);
      if(tp!=null)
        return tp;
      // Else try again but using the parent...
      curPath = curPath.getParentPath();
    }
    return null;
  }
  public TreePath findChildTitled(String text)
  {
    return findChildTitled(text, tree.getLeadSelectionPath());
  }
  public TreePath findChildTitled(String text, TreePath pathToNode)
  {
    JreepadNode myNode = (JreepadNode)pathToNode.getLastPathComponent();
    JreepadNode myChild;
    TreePath childPath;
    for(int i=0; i<myNode.getChildCount(); i++)
    {
      myChild = (JreepadNode)myNode.getChildAt(i);
      childPath = pathToNode.pathByAddingChild(myChild);
      if(myChild.getTitle().equals(text))
        return childPath;
      else