/**
     * Gets the displayed value, and uses the converter to convert the shared value to units this
     * instance is supposed to represent. If the displayed value and shared value are different,
     * then we turn off our document filter and update our value to match the shared value. We
     * re-enable the document filter afterwards.
     */
    @Override
    protected void paintComponent(Graphics g) {
      super.paintComponent(g);
      try {
        StyledDocument doc = getStyledDocument();
        double actualValue = (multiplier.getDisplayValue(value.getValue()));
        String actualValueAsString = df.format(actualValue);

        String displayedValue;
        try {
          displayedValue = doc.getText(0, doc.getLength());
        } catch (BadLocationException e) {
          displayedValue = "";
        }
        if (displayedValue.isEmpty()) {
          displayedValue = "0";
        }
        double displayedValueAsDouble = Double.parseDouble(displayedValue);
        if (!actualValueAsString.equals(displayedValue)
            && displayedValueAsDouble != actualValue) // Allow user to enter trailing zeroes.
        {
          bypassFilterAndSetText(doc, actualValueAsString);
        }
      } catch (NumberFormatException e) {
        // Swallow it as it's OK for the user to try and enter non-numbers.
      }
    }
    protected void bypassFilterAndSetText(StyledDocument doc, String text) {
      try {
        filter.setUpdateValue(false);
        doc.remove(0, doc.getLength());
        doc.insertString(0, text, null);

      } catch (BadLocationException e) {
        java.awt.Toolkit.getDefaultToolkit().beep();
      } finally {
        filter.setUpdateValue(true);
      }
    }
コード例 #3
0
  protected void buildErrorPanel() {
    errorPanel = new JPanel();
    GroupLayout layout = new GroupLayout(errorPanel);
    layout.setAutoCreateGaps(true);
    layout.setAutoCreateContainerGaps(true);
    errorPanel.setLayout(layout);
    //    errorPanel.setBorder(BorderFactory.createMatteBorder(2, 0, 0, 0, Color.BLACK));
    errorMessage = new JTextPane();
    errorMessage.setEditable(false);
    errorMessage.setContentType("text/html");
    errorMessage.setText(
        "<html><body>Could not connect to the Processing server.<br>"
            + "Contributions cannot be installed or updated without an Internet connection.<br>"
            + "Please verify your network connection again, then try connecting again.</body></html>");
    errorMessage.setFont(Toolkit.getSansFont(14, Font.PLAIN));
    errorMessage.setMaximumSize(new Dimension(550, 50));
    errorMessage.setOpaque(false);

    StyledDocument doc = errorMessage.getStyledDocument();
    SimpleAttributeSet center = new SimpleAttributeSet();
    StyleConstants.setAlignment(center, StyleConstants.ALIGN_CENTER);
    doc.setParagraphAttributes(0, doc.getLength(), center, false);

    closeButton = new JButton("X");
    closeButton.setContentAreaFilled(false);
    closeButton.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            contribDialog.makeAndShowTab(false, false);
          }
        });
    tryAgainButton = new JButton("Try Again");
    tryAgainButton.setFont(Toolkit.getSansFont(14, Font.PLAIN));
    tryAgainButton.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            contribDialog.makeAndShowTab(false, true);
            contribDialog.downloadAndUpdateContributionListing(editor.getBase());
          }
        });
    layout.setHorizontalGroup(
        layout
            .createSequentialGroup()
            .addPreferredGap(
                LayoutStyle.ComponentPlacement.RELATED, GroupLayout.PREFERRED_SIZE, Short.MAX_VALUE)
            .addGroup(
                layout
                    .createParallelGroup(GroupLayout.Alignment.CENTER)
                    .addComponent(errorMessage)
                    .addComponent(
                        tryAgainButton,
                        StatusPanel.BUTTON_WIDTH,
                        StatusPanel.BUTTON_WIDTH,
                        StatusPanel.BUTTON_WIDTH))
            .addPreferredGap(
                LayoutStyle.ComponentPlacement.RELATED, GroupLayout.PREFERRED_SIZE, Short.MAX_VALUE)
            .addComponent(closeButton));
    layout.setVerticalGroup(
        layout
            .createSequentialGroup()
            .addGroup(
                layout.createParallelGroup().addComponent(errorMessage).addComponent(closeButton))
            .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
            .addComponent(tryAgainButton));
    errorPanel.setBackground(Color.PINK);
    errorPanel.validate();
  }