buddylisttree.java

JBother是纯Java开发的Jabber(即时消息开源软件)客户端。支持群组聊天

            int count = 0;

            Iterator i = ((TreeMap) buddyGroups.get(group)).keySet().iterator();
            while (i.hasNext()) {
                String key = (String) i.next();
                if (key.equals(name)) {
                    break;
                }
                count++;
            }
            return count;
        //}
    }

    /**
     * Checks to see if the group is already in the tree, and returns the index
     * of it
     *
     * @param group
     *            the group to check
     * @return Description of the Return Value
     */
    public AutomatedTreeNode checkGroup(BuddyGroup group) {
        boolean check = false;
        AutomatedTreeNode node = new AutomatedTreeNode(group);

        Enumeration children = root.children();

        // find out if the group alread exists
        whileLoop: while (children.hasMoreElements()) {
            AutomatedTreeNode theNode = (AutomatedTreeNode) children
                    .nextElement();
            BuddyGroup g = (BuddyGroup) theNode.getUserObject();
            if (g.getGroupName().equals(group.getGroupName())) {
                node = theNode;
                check = true;
                break whileLoop;
            }
        }

        if (root.isNodeChild(node)) {
            return node;
        }

        final String tempGroup = group.getGroupName();
        final AutomatedTreeNode tempNode = node;

        if (!check) {
            int num = getGroupIndex(tempGroup);
            if (num >= 0) {
                root.insert(tempNode, num);
            }
        }

        group.setNode(node);

        return node;

    }

    private BuddyGroup getGroupObject(String name) {
        String temp = name.replaceAll(" ([^)]*)$", "");

        if (!showUnfiledBuddies
                && temp.equals(resources.getString("contactsGroup"))) {
            return null;
        }
        if (!showAgentBuddies
                && temp.equals(resources.getString("transportsGroup"))) {
            return null;
        }
        BuddyGroup group = (BuddyGroup) groups.get(name);
        if (group == null)
            group = new BuddyGroup(name);
        groups.put(name, group);
        return group;
    }

    /**
     * finds out if the buddy should be displayed in the BuddyListTree. If so
     * the buddy is added to the tree
     *
     * @param buddy
     *            the buddy to add
     */
    public void checkAddEntry(final BuddyStatus buddy) {
        if (buddy == null) {
            return;
        }

        boolean add = false;

        // if we are set to show the offline buddies then add the buddy to the
        // tree
        if (showOfflineBuddies) {
            add = true;
        } else {
            // otherwise we have to find out if the buddy is online before we
            // add it
            if (buddy.size() > 0) {
                add = true;
            }
        }

        if(!showAwayBuddies)
        {
            Presence.Mode mode = buddy.getPresence(buddy.getHighestResource());
            if( mode != null && mode != Presence.Mode.AVAILABLE ) add = false;
        }

        if (buddy.getRemoved()) {
            add = false;
        }

        String tempGroup = buddy.getTempGroup();
        if (tempGroup == null) {
            tempGroup = buddy.getGroup();
        }

        final String group = tempGroup;

        if( buddy.getRosterEntry() == null ) add = false;

        BuddyGroup gObj = getGroupObject(group);
        if (gObj == null)
            return;

        gObj.addBuddy(buddy);

        if (add) {
            final AutomatedTreeNode node = checkGroup(gObj);
            node.setUserObject(gObj);

            // find the group that the buddy belongs to
            int index = getBuddyIndex(gObj.getGroupName(), buddy);

            if (!isInTree(buddy)) {
                node.insert(new AutomatedTreeNode(buddy), index);
            }

            TreePath parent = new TreePath(root);
            tree.expandPath(parent);

            // find out if we need to expand this group
            String property = Settings.getInstance().getProperty(
                    "groupExpandStatus_" + group);
            if (property == null || !property.equals("collapsed")) {
                tree.expandPath(parent.pathByAddingChild(node));
            }
        }

    }

    /**
     * Returns whether or not the buddy is in the tree
     *
     * @param buddy
     *            the buddy to check
     * @return true if the buddy is in the tree
     */
    public boolean isInTree(BuddyStatus buddy) {
        String group = buddy.getGroup();

        // loop through all the groups until we find the group that this
        // buddy belongs to
        Enumeration children = root.children();
        while (children.hasMoreElements()) {
            AutomatedTreeNode node = (AutomatedTreeNode) children.nextElement();

            // once we find it's group, loop through all the buddies in that
            // group
            if (((BuddyGroup) node.getUserObject()).getGroupName()
                    .equals(group)) {
                Enumeration leafs = node.children();
                while (leafs.hasMoreElements()) {
                    AutomatedTreeNode leaf = (AutomatedTreeNode) leafs
                            .nextElement();
                    if (leaf.getUserObject() == buddy) {
                        return true;
                    }
                }
            }
        }

        return false;
    }

    /**
     * Adds a buddy to the tree - if it's not already in the tree
     *
     * @param buddy
     *            the buddy to add
     */
    public void addBuddy(final BuddyStatus buddy) {
        checkAddEntry(buddy);

        validate();
        repaint();
    }

    /**
     * Removes the buddy from the tree
     *
     * @param buddy
     *            the buddy to remove
     * @param group
     *            the group the buddy is in
     */
    public void removeBuddy(final BuddyStatus buddy, final String group,
            final boolean removeFromGroup) {
        // loop through all the groups until we find the group that this
        // buddy belongs to
        Enumeration children = root.children();
        while (children.hasMoreElements()) {
            AutomatedTreeNode node = (AutomatedTreeNode) children.nextElement();

            // once we find it's group, loop through all the buddies in that
            // group
            if (((BuddyGroup) node.getUserObject()).getGroupName()
                    .equals(group)) {
                Enumeration leafs = node.children();
                while (leafs.hasMoreElements()) {
                    AutomatedTreeNode leaf = (AutomatedTreeNode) leafs
                            .nextElement();
                    Object check = leaf.getUserObject();
                    if (check instanceof BuddyStatus) {
                        BuddyStatus temp = (BuddyStatus) check;

                        if (temp.getUser().equals(buddy.getUser())) {
                            // once we find the buddy, remove it
                            removeBuddyNode(node, leaf);
                            if (removeFromGroup) {
                                BuddyGroup g = getGroupObject(group);
                                g.removeBuddy(buddy);
                            }
                        }
                    }
                }
            }
        }

    }

    /**
     * removes this buddy from the JTree. If this was the last buddy in the
     * group then remove the group from being displayed
     *
     * @param node
     *            the group node
     * @param leaf
     *            the leaf node
     */
    private void removeBuddyNode(final AutomatedTreeNode node,
            final AutomatedTreeNode leaf) {
        String group = ((BuddyGroup) node.getUserObject()).getGroupName();

        if (group == null || group.equals(resources.getString("contactsGroup"))) {
            group = "zzz Contacts";
        } else if (group.equals(resources.getString("transportsGroup"))) {
            group = "zzzz Agents/Transports";
        }

        BuddyStatus buddy = (BuddyStatus) leaf.getUserObject();

        String name = buddy.getName();
        if (name == null) {
            name = buddy.getUser();
        }
        String jid = buddy.getUser();

       // synchronized (buddyGroups) {
            TreeMap buddies = ((TreeMap) buddyGroups.get(group));
            Iterator i = buddies.keySet().iterator();
            while (i.hasNext()) {
                String key = (String) i.next();
                if (buddies.get(key).equals(jid)) {
                    ((TreeMap) buddyGroups.get(group)).remove(key);
                    break;
                }
            }

       // }

        node.remove(leaf);
        if (node.getChildCount() <= 0) {
            buddyGroups.remove(group);
            root.remove(node);
        }

        tree.repaint();
    }

    /**
     * Starts a conversation if someone double double clicks on a buddy
     */
    public void initiateConversation(BuddyStatus buddy) {
        if (buddy == null) {
            if (tree.getSelectionPath() == null) {
                return;
            }

            TreePath path = tree.getSelectionPath();
            AutomatedTreeNode node = (AutomatedTreeNode) path
                    .getLastPathComponent();
            if (model.isLeaf(node)) {
                try {
                    buddy = (BuddyStatus) node.getUserObject();
                } catch (ClassCastException ex) {
                    return;
                }
            }
        }

        if (buddy == null)
            return;

        if (buddy.getConversation() == null) {
            ChatPanel conver = new ChatPanel(buddy);
            buddy.setConversation(conver);

            MessageDelegator.getInstance().showPanel(buddy.getConversation());
            MessageDelegator.getInstance().frontFrame(buddy.getConversation());
        } else {
            MessageDelegator.getInstance().showPanel(buddy.getConversation());
            MessageDelegator.getInstance().frontFrame(buddy.getConversation());
        }

        buddy.getConversation().stopTimer();
    }

    /**
     * Listens for mouse events in the tree
     *
     * @author Adam Olsen
     * @created March 2, 2005
     * @version 1.0
     */
    class PopupMouseListener extends MouseAdapter {
        /**
         * Description of the Method
         *
         * @param e
         *            Description of the Parameter
         */
        public void mousePressed(MouseEvent e) {
            checkPop(e);
        }

        /**
         * Description of the Method
         *
         * @param e
         *            Description of the Parameter
         */
        public void mouseReleased(MouseEvent e) {
            checkPop(e);
        }

        /**
         * Description of the Method
         *
         * @param e
         *            Description of the Parameter
         */
        public void mouseClicked(MouseEvent e) {
            checkPop(e);
            try {
                JTree tree = (JTree) e.getComponent();
            } catch (ClassCastException ex) {
                return;
            }

            if (e.getClickCount() >= 2) {
                e.consume();
                initiateConversation(null);
            }
        }

        /**
         * Checks if we need to display the buddy list popup menu Shows it if
         * needs be
         *
         * @param e
         *            Description of the Parameter
         */
        public void checkPop(MouseEvent e) {
            BuddyStatus buddy = null;

            if (e.isPopupTrigger()) {
                try {

                    JTree tree = (JTree) e.getComponent();

                    TreePath path = tree.getPathForLocation(e.getX(), e.getY());
                    if (path == null) {
                        throw new ClassCastException();
                    }

                    tree.setSelectionPath(path);

                    AutomatedTreeNode node = (AutomatedTreeNode) path
                            .getLastPathComponent();
                    Object selectedUserObject = node.getUserObject();
                    if (selectedUserObject.getClass().equals(BuddyStatus.class)) {
                        buddy = (BuddyStatus) node.getUserObject();
                        buddyPopupMenu.showMenu(e.getComponent(), e.getX(), e
                                .getY(), buddy);
                    } else if (selectedUserObject.getClass().equals(
                            BuddyGroup.class)) {
                        // buddies that are not in any group are put in
                        // "Contacts" group by JBother
                        // if we need to send a message to them, we need to
                        // extract them from the tree
                        // because there is no way to do it from the roster
                        Enumeration iChildren = node.children();
                        String usersList = new String();
                        while (iChildren.hasMoreElements())
                        {
                            AutomatedTreeNode o = (AutomatedTreeNode) iChildren
                                    .nextElement();
                            BuddyStatus buddyStatus = (BuddyStatus) o
                                    .getUserObject();
                            usersList += buddyStatus.getUser() + MessagePanel.RECIPIENTS_DELIMITER + " ";
                        }
                        // get rid of 'unneeded delimiter + space' string at the end
                        usersList = usersList.substring(0, usersList.length() -
                          (MessagePanel.RECIPIENTS_DELIMITER.length() + 1));
                        groupPopupMenu.showMenu(e.getComponent(), e.getX(), e
                                .getY(), usersList,
                                (BuddyGroup) selectedUserObject);
                    }
                    buddy = (BuddyStatus) node.getUserObject();

                    if (buddy.getUser().indexOf("@") == -1) {
                        buddyTransportMenu.showMenu(e.getComponent(), e.getX(),
                                e.getY(), buddy);
                    } else {
                        buddyPopupMenu.showMenu(e.getComponent(), e.getX(), e
                                .getY(), buddy);
                    }
                } catch (ClassCastException ex) {
                    /*
                     * is not a buddy, so don't display the menu
                     */
                }
            }
        }
    }
}