previewproxybase.java

来自「swing编写的库存管理程序。毕业设计类」· Java 代码 · 共 2,255 行 · 第 1/5 页

   *
   * @param report the report of this dialog.
   */
  private void applyDefinedDimension(final JFreeReport report)
  {
    String width = report.getReportConfiguration().getConfigProperty(
        PREVIEW_PREFERRED_WIDTH);
    String height = report.getReportConfiguration().getConfigProperty(
        PREVIEW_PREFERRED_HEIGHT);

    // only apply if both values are set.
    if (width != null && height != null)
    {
      try
      {
        final Dimension pref = createCorrectedDimensions
            (Integer.parseInt(width), Integer.parseInt(height));
        setPreferredSize(pref);
      }
      catch (Exception nfe)
      {
        Log.warn("Preferred viewport size is defined, but the specified values are invalid.");
      }
    }

    width = report.getReportConfiguration().getConfigProperty(
        PREVIEW_MAXIMUM_WIDTH);
    height = report.getReportConfiguration().getConfigProperty(
        PREVIEW_MAXIMUM_HEIGHT);

    // only apply if at least one value is set.
    if (width != null || height != null)
    {
      try
      {
        final int iWidth = (width == null)
            ? Short.MAX_VALUE : (int) ParserUtil.parseRelativeFloat(width, "");
        final int iHeight = (height == null)
            ? Short.MAX_VALUE : (int) ParserUtil.parseRelativeFloat(height, "");
        final Dimension pref = createCorrectedDimensions(iWidth, iHeight);
        setMaximumSize(pref);
        addComponentListener(new org.jfree.report.modules.gui.base.components.WindowSizeLimiter());
      }
      catch (Exception nfe)
      {
        Log.warn("Maximum viewport size is defined, but the specified values are invalid.");
      }
    }
  }

  /**
   * Correct the given width and height. If the values are negative, the height and
   * width is considered a proportional value where -100 corresponds to 100%.
   * The proportional attributes are given is relation to the screen width and height.
   *
   * @param w the to be corrected width
   * @param h the height that should be corrected
   * @return the dimension of width and height, where all relative values are normalized.
   */
  private Dimension createCorrectedDimensions(int w, int h)
  {
    final Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    if (w < 0)
    {
      w = (w * screenSize.width / -100);
    }
    if (h < 0)
    {
      h = (h * screenSize.height / -100);
    }
    return new Dimension(w, h);
  }

  /**
   * Creates the ReportPane for the report.
   *
   * @param report the report for this pane.
   *
   * @return the report pane.
   *
   * @throws ReportProcessingException if there is a problem processing the report.
   */
  protected ReportPane createReportPane(final JFreeReport report) throws ReportProcessingException
  {
    final ReportPane reportPane = new ReportPane(report);
    return reportPane;
  }

  /**
   * Retrieves the resources for this PreviewFrame. If the resources are not initialized,
   * they get loaded on the first call to this method.
   *
   * @return this frames ResourceBundle.
   */
  protected ResourceBundle getResources()
  {
    if (resources == null)
    {
      resources = ResourceBundle.getBundle(BASE_RESOURCE_CLASS);
    }
    return resources;
  }

  /**
   * Returns the current zoom factor.
   *
   * @return The current zoom factor.
   */
  public float getZoomFactor()
  {
    return ZOOM_FACTORS[zoomIndex];
  }

  /**
   * Returns the report pane, which implements the Pageable interface.
   *
   * @return the report pane.
   */
  public Pageable getPageable()
  {
    return reportPane;
  }

  /**
   * Returns the report pane, which implements the Printable interface.
   *
   * @return the report pane.
   */
  public Printable getPrintable()
  {
    return reportPane;
  }

  /**
   * Returns the report pane used to preview the report.
   *
   * @return the report pane.
   */
  public ReportPane getReportPane()
  {
    return reportPane;
  }

  /**
   * Shows the exception dialog by using localized messages. The message base is
   * used to construct the localisation key by appending ".title" and ".message" to the
   * base name.
   *
   * @param localisationBase  the resource key prefix.
   * @param e  the exception.
   */
  protected void showExceptionDialog(final String localisationBase, final Exception e)
  {
    ExceptionDialog.showExceptionDialog(
        getResources().getString(localisationBase + ".title"),
        MessageFormat.format(
            getResources().getString(localisationBase + ".message"),
            new Object[]{e.getLocalizedMessage()}
        ),
        e);
  }

  /**
   * Method lastPage moves to the last page.
   */
  protected void lastPage()
  {
    reportPane.setPageNumber(reportPane.getNumberOfPages());
  }

  /**
   * Increases the page number.
   */
  protected void increasePageNumber()
  {
    final int pn = reportPane.getPageNumber();
    final int mp = reportPane.getNumberOfPages();

    if (pn < mp)
    {
      reportPane.setPageNumber(pn + 1);
    }
  }

  /**
   * Activates the display of the first page, if not already on the first page.
   */
  protected void firstPage()
  {
    if (reportPane.getPageNumber() != 1)
    {
      reportPane.setPageNumber(1);
    }
  }

  /**
   * Decreases the page number.
   */
  protected void decreasePageNumber()
  {
    final int pn = reportPane.getPageNumber();
    if (pn > 1)
    {
      reportPane.setPageNumber(pn - 1);
    }
  }

  /**
   * Increases the zoom factor for the report pane (unless it is already at maximum zoom).
   */
  protected void increaseZoom()
  {
    if (zoomIndex < ZOOM_FACTORS.length - 1)
    {
      zoomIndex++;
    }

    zoomSelect.setSelectedIndex(zoomIndex);

    reportPane.setZoomFactor(getZoomFactor());
    //validateButtons();
  }

  /**
   * Decreases the zoom factor for the report pane (unless it is already at the minimum zoom).
   * */
  protected void decreaseZoom()
  {
    if (zoomIndex > 0)
    {
      zoomIndex--;
    }

    zoomSelect.setSelectedIndex(zoomIndex);

    reportPane.setZoomFactor(getZoomFactor());
    //validateButtons();
  }

  /**
   * Sets the zoomfactor of the report pane.
   *
   * @param index  the index into the array of standard zoom factors.
   */
  public void setZoomFactor(final int index)
  {
    zoomIndex = index;
    reportPane.setZoomFactor(getZoomFactor());
    zoomSelect.setSelectedIndex(zoomIndex);
  }

  /**
   * Checks whether this action has a keystroke assigned. If it has one, the keystroke
   * is assigned to the frame.
   *
   * @param action  the action.
   */
  protected void registerAction(final Action action)
  {
    final KeyStroke key = (KeyStroke) action.getValue(ActionDowngrade.ACCELERATOR_KEY);
    if (key != null)
    {
      registerKeyboardAction(action, key, JComponent.WHEN_IN_FOCUSED_WINDOW);
    }
  }

  /**
   * Creates all actions by calling the createXXXAction functions and assigning them to
   * the local variables.
   *
   */
  private void createDefaultActions()
  {
    navigationActionMap.put(GOTO_ACTION_KEY, createDefaultGotoAction());
    baseActionMap.put(ABOUT_ACTION_KEY, createDefaultAboutAction());
    navigationActionMap.put(FIRSTPAGE_ACTION_KEY, createDefaultFirstPageAction());
    navigationActionMap.put(LASTPAGE_ACTION_KEY, createDefaultLastPageAction());
    navigationActionMap.put(NEXT_PAGE_ACTION_KEY, createDefaultNextPageAction());
    navigationActionMap.put(PREV_PAGE_ACTION_KEY, createDefaultPreviousPageAction());
    final Action zoomInAction = createDefaultZoomInAction();
    final Action zoomOutAction = createDefaultZoomOutAction();
    zoomActionMap.put(ZOOM_IN_ACTION_KEY, zoomInAction);
    zoomActionMap.put(ZOOM_OUT_ACTION_KEY, zoomOutAction);
  }

  /**
   * Creates the NextPageAction used in this previewframe.
   *
   * @return the 'next page' action.
   */
  protected Action createDefaultNextPageAction()
  {
    return new DefaultNextPageAction();
  }

  /**
   * Creates the PreviousPageAction used in this previewframe.
   *
   * @return the 'previous page' action.
   */
  protected Action createDefaultPreviousPageAction()
  {
    return new DefaultPreviousPageAction();
  }

  /**
   * Creates the ZoomInAction used in this previewframe.
   *
   * @return the 'zoom in' action.
   */
  protected Action createDefaultZoomInAction()
  {
    return new DefaultZoomInAction();
  }

  /**
   * Creates the ZoomOutAction used in this previewframe.
   *
   * @return the 'zoom out' action.
   */
  protected Action createDefaultZoomOutAction()
  {
    return new DefaultZoomOutAction();
  }

  /**
   * Creates the AboutAction used in this previewframe.
   * <P>
   * If you subclass PreviewFrame, and override this method, you can display your own 'about'
   * dialog.
   *
   * @return the 'about' action.
   */
  protected Action createDefaultAboutAction()
  {
    return new DefaultAboutAction();
  }

  /**
   * Creates a zoom select action.
   *
   * @return the action.
   */
  protected Action createZoomSelectAction()
  {
    return new ZoomSelectAction();
  }

  /**
   * Creates the GotoPageAction used in this previewframe.
   *
   * @return the 'goto' action.
   */
  protected Action createDefaultGotoAction()
  {
    return new DefaultGotoAction();
  }

  /**
   * Creates the FirstPageAction used in this previewframe.
   *
   * @return the 'first page' action.
   */
  protected Action createDefaultFirstPageAction()
  {
    return new DefaultFirstPageAction();
  }

  /**
   * Creates the LastPageAction used in this previewframe.
   *
   * @return the 'last page' action.
   */
  protected Action createDefaultLastPageAction()
  {
    return new DefaultLastPageAction();
  }

  /**
   * Returns the status text of the status line.
   *
   * @return the status text.
   */
  public String getStatusText()
  {
    return statusHolder.getText();
  }

  /**
   * Defines the text of the status line.
   *
   * @param text the new text of the status line.
   */
  public void setStatusText(final String text)
  {
    statusHolder.setText(text);
  }

  /**
   * Creates the statusbar for this frame. Use setStatus() to display text on the status bar.
   *
   * @return the status bar.
   */
  protected JPanel createStatusBar()
  {
    final JPanel statusPane = new JPanel();
    statusPane.setLayout(new BorderLayout());
    statusPane.setBorder(
        BorderFactory.createLineBorder(UIManager.getDefaults().getColor("controlShadow")));
    statusHolder = new JLabel(" ");
    statusPane.setMinimumSize(statusHolder.getPreferredSize());
    statusPane.add(statusHolder, BorderLayout.WEST);

    return statusPane;
  }

  /**
   * Creates and returns a menu-bar for the frame.
   *
   * @return A ready-made JMenuBar.
   */
  protected JMenuBar createMenuBar()
  {
    // create the menus
    final JMenuBar menuBar = new JMenuBar();
    menuBar.add(createFileMenu());

    if (isMenuActionEnabled(ACTION_NAVIGATION_PROPERTY))
    {
      menuBar.add(createNavigationMenu());
    }
    if (isMenuActionEnabled(ACTION_ZOOM_PROPERTY))
    {
      menuBar.add(createZoomMenu());
    }
    if (isMenuActionEnabled(ACTION_ABOUT_PROPERTY))
    {
      menuBar.add(createHelpMenu());
    }
    return menuBar;
  }

  /**
   * Creates and returns the file menu of the preview base. The actions must
   * be assigned in this method.
   *
   * @return A ready-made FileMenu.
   */
  protected JMenu createFileMenu ()
  {
    final ResourceBundle resources = getResources();