chatarea.java

来自「开源项目openfire的完整源程序」· Java 代码 · 共 703 行 · 第 1/2 页

    /**
     * Set the font on the current element.
     *
     * @param font the font to use with the current element
     */
    public void setFont(String font) {
        StyleConstants.setFontFamily(styles, font);
        try {
            setCharacterAttributes(styles, false);
        }
        catch (Exception fontException) {
            Log.error("Error settings font:", fontException);
        }

        fontFamily = font;
    }

    /**
     * Set the current font size.
     *
     * @param size the current font size.
     */
    public void setFontSize(int size) {
        StyleConstants.setFontSize(styles, size);
        try {
            setCharacterAttributes(styles, false);
        }
        catch (Exception fontException) {
            Log.error("Error settings font:", fontException);
        }

        fontSize = size;
    }

    /**
     * Inserts the current font.
     *
     * @param text - the current font( string representation )
     */
    private void insertFont(String text) {
        int index = text.indexOf("=");
        int lastIndexOf = text.lastIndexOf(" ");
        String font = text.substring(index + 1, lastIndexOf).replaceAll("_", " ");


        index = text.lastIndexOf("=");
        int slash = text.indexOf("/");

        int fontSize = Integer.parseInt(text.substring(index + 1, slash));
        setFontSize(fontSize);
        setFont(font);
    }


    public void mouseClicked(MouseEvent e) {
        try {
            final int pos = viewToModel(e.getPoint());
            final Element element = getStyledDocument().getCharacterElement(pos);

            if (element != null) {
                final AttributeSet as = element.getAttributes();
                final Object o = as.getAttribute("link");

                if (o != null) {
                    try {
                        final String url = (String)o;
                        boolean handled = fireLinkInterceptors(e, url);
                        if (!handled) {
                            if (Spark.isWindows()) {
                                SparkManager.getNativeManager().launchBrowser(url);
                            }
                            else {
                                BrowserLauncher.openURL(url);
                            }
                        }
                    }
                    catch (Exception ioe) {
                        Log.error("Error launching browser:", ioe);
                    }
                }
            }
        }
        catch (Exception ex) {
            Log.error("Visible Error", ex);
        }
    }

    public void mousePressed(MouseEvent e) {
        if (e.isPopupTrigger()) {
            handlePopup(e);
            return;
        }
    }

    /**
     * This launches the <code>BrowserLauncher</code> with the URL
     * located in <code>ChatArea</code>. Note that the url will
     * automatically be clickable when added to <code>ChatArea</code>
     *
     * @param e - the MouseReleased event
     */
    public void mouseReleased(MouseEvent e) {
        if (e.isPopupTrigger()) {
            handlePopup(e);
            return;
        }


    }

    public void mouseEntered(MouseEvent e) {
    }

    public void mouseExited(MouseEvent e) {
    }

    public void mouseDragged(MouseEvent e) {
    }

    /**
     * Checks to see if the mouse is located over a browseable
     * link.
     *
     * @param e - the current MouseEvent.
     */
    public void mouseMoved(MouseEvent e) {
        checkForLink(e);
    }

    /**
     * Checks to see if the mouse is located over a browseable
     * link.
     *
     * @param e - the current MouseEvent.
     */
    private void checkForLink(MouseEvent e) {
        try {
            final int pos = viewToModel(e.getPoint());
            final Element element = getStyledDocument().getCharacterElement(pos);

            if (element != null) {
                final AttributeSet as = element.getAttributes();
                final Object o = as.getAttribute("link");

                if (o != null) {
                    setCursor(HAND_CURSOR);
                }
                else {
                    setCursor(DEFAULT_CURSOR);
                }
            }
        }
        catch (Exception ex) {
            Log.error("Error in CheckLink:", ex);
        }
    }

    /**
     * Examines the chatInput text pane, and returns a string containing the text with any markup
     * (jive markup in our case). This will strip any terminating new line from the input.
     *
     * @return a string of marked up text.
     */
    public String getMarkup() {
        final StringBuffer buf = new StringBuffer();
        final String text = getText();
        final StyledDocument doc = getStyledDocument();
        final Element rootElem = doc.getDefaultRootElement();

        // MAY RETURN THIS BLOCK
        if (text.trim().length() <= 0) {
            return null;
        }

        boolean endsInNewline = text.charAt(text.length() - 1) == '\n';
        for (int j = 0; j < rootElem.getElementCount(); j++) {
            final Element pElem = rootElem.getElement(j);

            for (int i = 0; i < pElem.getElementCount(); i++) {
                final Element e = pElem.getElement(i);
                final AttributeSet as = e.getAttributes();
                final boolean bold = StyleConstants.isBold(as);
                final boolean italic = StyleConstants.isItalic(as);
                final boolean underline = StyleConstants.isUnderline(as);
                int end = e.getEndOffset();

                if (end > text.length()) {
                    end = text.length();
                }

                if (endsInNewline && end >= text.length() - 1) {
                    end--;
                }

                // swing text.. :-/
                if (j == rootElem.getElementCount() - 1
                        && i == pElem.getElementCount() - 1) {
                    end = text.length();
                }

                final String current = text.substring(e.getStartOffset(), end);
                if (bold) {
                    buf.append("[b]");
                }
                if (italic) {
                    buf.append("[i]");
                }
                if (underline) {
                    buf.append("[u]");
                }
                //buf.append( "[font face=/\"" + fontFamily + "/\" size=/\"" + fontSize + "/\"/]" );

                // Iterator over current string to find url tokens
                final StringTokenizer tkn = new StringTokenizer(current, " ", true);
                while (tkn.hasMoreTokens()) {
                    final String token = tkn.nextToken();
                    if (token.startsWith("http://") || token.startsWith("ftp://")
                            || token.startsWith("https://")) {
                        buf.append("[url]").append(token).append("[/url]");
                    }
                    else if (token.startsWith("www")) {
                        buf.append("[url ");
                        buf.append("http://").append(token);
                        buf.append("]");
                        buf.append(token);
                        buf.append("[/url]");
                    }
                    else {
                        buf.append(token);
                    }
                }

                // Always add end tags for markup
                if (underline) {
                    buf.append("[/u]");
                }
                if (italic) {
                    buf.append("[/i]");
                }
                if (bold) {
                    buf.append("[/b]");
                }
                //  buf.append( "[/font]" );
            }
        }

        return buf.toString();
    }

    private void handlePopup(MouseEvent e) {
        popup = new JPopupMenu();
        popup.add(cutMenu);
        popup.add(copyMenu);
        popup.add(pasteMenu);
        fireContextMenuListeners();
        popup.addSeparator();
        popup.add(selectAll);

        // Handle enable
        boolean textSelected = ModelUtil.hasLength(getSelectedText());
        String clipboard = SparkManager.getClipboard();
        cutMenu.setEnabled(textSelected && isEditable());
        copyMenu.setEnabled(textSelected);
        pasteMenu.setEnabled(ModelUtil.hasLength(clipboard) && isEditable());

        popup.show(this, e.getX(), e.getY());
    }

    /**
     * Adds a <code>ContextMenuListener</code> to ChatArea.
     *
     * @param listener the ContextMenuListener.
     */
    public void addContextMenuListener(ContextMenuListener listener) {
        contextMenuListener.add(listener);
    }

    /**
     * Remove a <code>ContextMenuListener</code> to ChatArea.
     *
     * @param listener the ContextMenuListener.
     */
    public void removeContextMenuListener(ContextMenuListener listener) {
        contextMenuListener.remove(listener);
    }

    private void fireContextMenuListeners() {
        Iterator listeners = new ArrayList(contextMenuListener).iterator();
        while (listeners.hasNext()) {
            ContextMenuListener listener = (ContextMenuListener)listeners.next();
            listener.poppingUp(this, popup);
        }
    }

    public void addLinkInterceptor(LinkInterceptor interceptor) {
        interceptors.add(interceptor);
    }

    public void removeLinkInterceptor(LinkInterceptor interceptor) {
        interceptors.remove(interceptor);
    }

    public boolean fireLinkInterceptors(MouseEvent event, String link) {
        final Iterator iter = new ArrayList(interceptors).iterator();
        while (iter.hasNext()) {
            boolean handled = ((LinkInterceptor)iter.next()).handleLink(event, link);
            if (handled) {
                return true;
            }
        }

        return false;
    }


    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == cutMenu) {
            cutAction();
        }
        else if (e.getSource() == copyMenu) {
            SparkManager.setClipboard(getSelectedText());
        }
        else if (e.getSource() == pasteMenu) {
            pasteAction();
        }
        else if (e.getSource() == selectAll) {
            requestFocus();
            selectAll();
        }
    }

    private void cutAction() {
        String selectedText = getSelectedText();
        replaceSelection("");
        SparkManager.setClipboard(selectedText);
    }

    private void pasteAction() {
        String text = SparkManager.getClipboard();
        if (text != null) {
            replaceSelection(text);
        }
    }

    protected void releaseResources() {
        getActionMap().remove("copy");
        getActionMap().remove("cut");
        getActionMap().remove("paste");
    }
}