Class BasicMonthViewUI


public class BasicMonthViewUI extends MonthViewUI
Base implementation of the JXMonthView UI.

Note: The api changed considerably between releases 0.9.4 and 0.9.5.

The general drift of the change was to delegate all text rendering to a dedicated rendering controller (currently named RenderingHandler), similar to the collection view rendering. The UI itself keeps layout and positioning of the rendering components. Plus updating on property changes received from the monthView.

Painting: coordinate systems.

  • Screen coordinates of months/days, accessible via the getXXBounds() methods. These coordinates are absolute in the system of the monthView.
  • The grid of visible months with logical row/column coordinates. The logical coordinates are adjusted to ComponentOrientation.
  • The grid of days in a month with logical row/column coordinates. The logical coordinates are adjusted to ComponentOrientation. The columns are the (optional) week header and the days of the week. The rows are the day header and the weeks in a month. The day header shows the localized names of the days and has the row coordinate DAY_HEADER_ROW. It is shown always. The row header shows the week number in the year and has the column coordinate WEEK_HEADER_COLUMN. It is shown only if the showingWeekNumber property is true.
On the road to "zoomable" date range views (Vista-style).

Added support (doesn't do anything yet, zoom-logic must yet be defined) by way of an active calendar header which is added to the monthView if zoomable. It is disabled by default. In this mode, the view is always traversable and shows exactly one calendar. It is orthogonal to the classic mode, that is client code should not be effected in any way as long as the mode is not explicitly enabled.

NOTE to LAF implementors: the active calendar header is very, very, very raw and sure to change without much notice. Better not yet to support it right now.

  • Field Details

    • LOG

      private static final Logger LOG
    • CALENDAR_SPACING

      private static final int CALENDAR_SPACING
      See Also:
    • MONTH_DOWN

      public static final int MONTH_DOWN
      Return value used to identify when the month down button is pressed.
      See Also:
    • MONTH_UP

      public static final int MONTH_UP
      Return value used to identify when the month up button is pressed.
      See Also:
    • WEEK_HEADER_COLUMN

      protected static final int WEEK_HEADER_COLUMN
      See Also:
    • DAYS_IN_WEEK

      protected static final int DAYS_IN_WEEK
      See Also:
    • FIRST_DAY_COLUMN

      protected static final int FIRST_DAY_COLUMN
      See Also:
    • LAST_DAY_COLUMN

      protected static final int LAST_DAY_COLUMN
      See Also:
    • DAY_HEADER_ROW

      protected static final int DAY_HEADER_ROW
      See Also:
    • WEEKS_IN_MONTH

      protected static final int WEEKS_IN_MONTH
      See Also:
    • FIRST_WEEK_ROW

      protected static final int FIRST_WEEK_ROW
      See Also:
    • LAST_WEEK_ROW

      protected static final int LAST_WEEK_ROW
      See Also:
    • monthView

      protected JXMonthView monthView
      the component we are installed for.
    • propertyChangeListener

      private PropertyChangeListener propertyChangeListener
    • mouseListener

      private MouseListener mouseListener
    • mouseMotionListener

      private MouseMotionListener mouseMotionListener
    • handler

      private BasicMonthViewUI.Handler handler
    • lastDisplayedDate

      private Date lastDisplayedDate
      end of day of the last visible month.
    • usingKeyboard

      private boolean usingKeyboard
      //---------- fields related to selection/navigation /** flag indicating keyboard navigation.
    • pivotDate

      private Date pivotDate
      For interval selections we need to record the date we pivot around.
    • originalDateSpan

      private SortedSet<Date> originalDateSpan
      Date span used by the keyboard actions to track the original selection.
    • isLeftToRight

      protected boolean isLeftToRight
    • monthUpImage

      protected Icon monthUpImage
    • monthDownImage

      protected Icon monthDownImage
    • arrowPaddingX

      private int arrowPaddingX
      The padding for month traversal icons. PENDING JW: decouple rendering and hit-detection.
    • arrowPaddingY

      private int arrowPaddingY
    • fullMonthBoxHeight

      private int fullMonthBoxHeight
      height of month header including the monthView's box padding.
    • fullBoxWidth

      private int fullBoxWidth
      width of a "day" box including the monthView's box padding this is the same for days-of-the-week, weeks-of-the-year and days
    • fullBoxHeight

      private int fullBoxHeight
      height of a "day" box including the monthView's box padding this is the same for days-of-the-week, weeks-of-the-year and days
    • calendarWidth

      private int calendarWidth
      the width of a single month display.
    • calendarHeight

      private int calendarHeight
      the height of a single month display.
    • fullCalendarHeight

      private int fullCalendarHeight
      the height of a single month grid cell, including padding.
    • fullCalendarWidth

      private int fullCalendarWidth
      the width of a single month grid cell, including padding.
    • calendarRowCount

      private int calendarRowCount
      The number of calendars displayed vertically.
    • calendarColumnCount

      private int calendarColumnCount
      The number of calendars displayed horizontally.
    • calendarGrid

      protected Rectangle calendarGrid
      The bounding box of the grid of visible months.
    • daysOfTheWeek

      private String[] daysOfTheWeek
      The Strings used for the day headers. This is the fall-back for the monthView if no custom strings are set. PENDING JW: delegate to RenderingHandler?
    • renderingHandler

      private CalendarRenderingHandler renderingHandler
      Provider of configured components for text rendering.
    • rendererPane

      private CellRendererPane rendererPane
      The CellRendererPane for stamping rendering comps.
    • calendarHeaderHandler

      private CalendarHeaderHandler calendarHeaderHandler
      The CalendarHeaderHandler which provides the header component if zoomable.
  • Constructor Details

    • BasicMonthViewUI

      public BasicMonthViewUI()
  • Method Details

    • createUI

      public static ComponentUI createUI(JComponent c)
    • installUI

      public void installUI(JComponent c)
      Installs the component as appropriate for the current lf. PENDING JW: clarify sequence of installXX methods.
      Overrides:
      installUI in class ComponentUI
    • uninstallUI

      public void uninstallUI(JComponent c)
      Overrides:
      uninstallUI in class ComponentUI
    • installComponents

      protected void installComponents()
      Creates and installs the calendar header handler.
    • uninstallComponents

      protected void uninstallComponents()
      Uninstalls the calendar header handler.
    • installDefaults

      protected void installDefaults()
      Installs default values.

      This is refactored to only install default properties on the monthView. Extracted install of this delegate's properties into installDelegate.

    • installDelegate

      protected void installDelegate()
      Installs this ui delegate's properties.
    • uninstallDefaults

      protected void uninstallDefaults()
    • installKeyboardActions

      protected void installKeyboardActions()
    • installKeyBindings

      private void installKeyBindings(int type)
      Parameters:
      inputMap -
    • uninstallKeyBindings

      private void uninstallKeyBindings(int type)
      Parameters:
      inputMap -
    • uninstallKeyboardActions

      protected void uninstallKeyboardActions()
    • installListeners

      protected void installListeners()
    • uninstallListeners

      protected void uninstallListeners()
    • installRenderingHandler

      protected void installRenderingHandler()
      Creates and installs the renderingHandler and infrastructure to use it.
    • uninstallRenderingHandler

      protected void uninstallRenderingHandler()
      Uninstalls the renderingHandler and infrastructure that used it.
    • createRenderingHandler

      protected CalendarRenderingHandler createRenderingHandler()
      Returns the CalendarRenderingHandler to use. Subclasses may override to plug-in custom implementations.

      This implementation returns an instance of RenderingHandler.

      Returns:
      the endering handler to use for painting, must not be null
    • setRenderingHandler

      protected void setRenderingHandler(CalendarRenderingHandler renderingHandler)
      Parameters:
      renderingHandler - the renderingHandler to set
    • getRenderingHandler

      protected CalendarRenderingHandler getRenderingHandler()
      Returns:
      the renderingHandler
    • updateComponentInputMap

      protected void updateComponentInputMap()
      Binds/clears the keystrokes in the component input map, based on the monthView's componentInputMap enabled property.
      See Also:
    • updateLocale

      protected void updateLocale(boolean revalidate)
      Updates internal state according to monthView's locale. Revalidates the monthView if the boolean parameter is true.
      Parameters:
      revalidate - a boolean indicating whether the monthView should be revalidated after the change.
    • getDaysOfTheWeek

      public String[] getDaysOfTheWeek()
      Description copied from class: MonthViewUI
      Returns an array of String to use as names for the days of the week.
      Specified by:
      getDaysOfTheWeek in class MonthViewUI
      Returns:
      array of names for the days of the week.
    • createPropertyChangeListener

      protected PropertyChangeListener createPropertyChangeListener()
    • createLayoutManager

      protected LayoutManager createLayoutManager()
    • createMouseListener

      protected MouseListener createMouseListener()
    • createMouseMotionListener

      protected MouseMotionListener createMouseMotionListener()
    • getHandler

      private BasicMonthViewUI.Handler getHandler()
    • isUsingKeyboard

      public boolean isUsingKeyboard()
    • setUsingKeyboard

      public void setUsingKeyboard(boolean val)
    • getDayBoundsAtLocation

      protected Rectangle getDayBoundsAtLocation(int x, int y)
      Returns the bounds of the day in the grid of days which contains the given location. The bounds are in monthView screen coordinate system.

      Note: this is a pure geometric mapping. The returned rectangle need not necessarily map to a date in the month which contains the location, it can represent a week-number/column header or a leading/trailing date.

      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the bounds of the day which contains the location, or null if outside
    • getDayBoundsInMonth

      protected Rectangle getDayBoundsInMonth(Date month, int row, int column)
      Returns the bounds of the day box at logical coordinates in the given month. The row's range is from DAY_HEADER_ROW to LAST_WEEK_ROW. Column's range is from WEEK_HEADER_COLUMN to LAST_DAY_COLUMN.
      Parameters:
      month - the month containing the day box
      row - the logical row (== week) coordinate in the day grid
      column - the logical column (== day) coordinate in the day grid
      Returns:
      the bounds of the daybox or null if not showing
      Throws:
      IllegalArgumentException - if row or column are out off range.
      See Also:
    • getDayGridPositionAtLocation

      protected Point getDayGridPositionAtLocation(int x, int y)
      Returns the logical coordinates of the day which contains the given location. The p.x of the returned value represents the week header or the day of week, ranging from WEEK_HEADER_COLUMN to LAST_DAY_COLUMN. The p.y represents the day header or week of the month, ranging from DAY_HEADER_ROW to LAST_WEEK_ROW. The transformation takes care of ComponentOrientation.

      Note: The returned grid position need not necessarily map to a date in the month which contains the location, it can represent a week-number/column header or a leading/trailing date.

      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the logical coordinates of the day in the grid of days in a month or null if outside.
      See Also:
    • getDayInMonth

      protected Date getDayInMonth(Date month, int row, int column)
      Returns the Date defined by the logical grid coordinates relative to the given month. May be null if the logical coordinates represent a header in the day grid or is outside of the given month. Mapping logical day grid coordinates to Date.

      PENDING JW: relax the startOfMonth pre? Why did I require it?

      Parameters:
      month - a calendar representing the first day of the month, must not be null.
      row - the logical row index in the day grid of the month
      column - the logical column index in the day grid of the month
      Returns:
      the day at the logical grid coordinates in the given month or null if the coordinates are day/week header or leading/trailing dates
      Throws:
      IllegalStateException - if the month is not the start of the month.
      See Also:
    • getDayGridPosition

      protected Point getDayGridPosition(Date date)
      Returns the given date's position in the grid of the month it is contained in.
      Parameters:
      date - the Date to get the logical position for, must not be null.
      Returns:
      the logical coordinates of the day in the grid of days in a month or null if the Date is not visible.
      See Also:
    • getDayAtLocation

      public Date getDayAtLocation(int x, int y)
      Returns the Date at the given location. May be null if the coordinates don't map to a day in the month which contains the coordinates. Specifically: hitting leading/trailing dates returns null. Mapping pixel to calendar day.
      Specified by:
      getDayAtLocation in class MonthViewUI
      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the day at the given location or null if the location doesn't map to a day in the month which contains the coordinates.
      See Also:
    • getDayBounds

      protected Rectangle getDayBounds(Date date)
      Returns the bounds of the given day. The bounds are in monthView coordinate system.

      PENDING JW: this most probably should be public as it is the logical reverse of getDayAtLocation

      Parameters:
      date - the Date to return the bounds for. Must not be null.
      Returns:
      the bounds of the given date or null if not visible.
      See Also:
    • checkValidRow

      private void checkValidRow(int row, int column)
      Parameters:
      row -
    • isVisible

      private boolean isVisible(Date date)
      Returns a boolean indicating if the given Date is visible. Trailing/leading dates of the last/first displayed month are considered to be invisible.
      Parameters:
      date - the Date to check for visibility. Must not be null.
      Returns:
      true if the date is visible, false otherwise.
    • getTraversableGridPositionAtLocation

      protected int getTraversableGridPositionAtLocation(int x, int y)
      Mapping pixel to bounds.

      PENDING JW: define the "action grid". Currently this replaces the old version to remove all internal usage of deprecated methods.

      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the bounds of the active header area in containing the location or null if outside.
    • getMonthHeaderBoundsAtLocation

      protected Rectangle getMonthHeaderBoundsAtLocation(int x, int y)
      Returns the bounds of the month header which contains the given location. The bounds are in monthView coordinate system.

      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the bounds of the month which contains the location, or null if outside
    • getMonthDetailsBoundsAtLocation

      protected Rectangle getMonthDetailsBoundsAtLocation(int x, int y)
      Returns the bounds of the month details which contains the given location. The bounds are in monthView coordinate system.
      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the bounds of the details grid in the month at location or null if outside.
    • getMonthBoundsAtLocation

      protected Rectangle getMonthBoundsAtLocation(int x, int y)
      Returns the bounds of the month which contains the given location. The bounds are in monthView coordinate system.

      Mapping pixel to bounds.

      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the bounds of the month which contains the location, or null if outside
    • getMonthGridPositionAtLocation

      protected Point getMonthGridPositionAtLocation(int x, int y)
      Returns the logical coordinates of the month which contains the given location. The p.x of the returned value represents the column, the p.y represents the row the month is shown in. The transformation takes care of ComponentOrientation.

      Mapping pixel to logical grid coordinates.

      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the logical coordinates of the month in the grid of month shown by this monthView or null if outside.
    • getMonthAtLocation

      protected Date getMonthAtLocation(int x, int y)
      Returns the Date representing the start of the month which contains the given location.

      Mapping pixel to calendar day.

      Parameters:
      x - the x position of the location in pixel
      y - the y position of the location in pixel
      Returns:
      the start of the month which contains the given location or null if the location is outside the grid of months.
    • getMonth

      protected Date getMonth(int row, int column)
      Returns the Date representing the start of the month at the given logical position in the grid of months.

      Mapping logical grid coordinates to Calendar.

      Parameters:
      row - the rowIndex in the grid of months.
      column - the columnIndex in the grid months.
      Returns:
      a Date representing the start of the month at the given logical coordinates.
      See Also:
    • getMonthGridPosition

      protected Point getMonthGridPosition(Date date)
      Returns the logical grid position of the month containing the given date. The Point's x value is the column in the grid of months, the y value is the row in the grid of months. Mapping Date to logical grid position, this is the reverse of getMonth(int, int).
      Parameters:
      date - the Date to return the bounds for. Must not be null.
      Returns:
      the postion of the month that contains the given date or null if not visible.
      See Also:
    • getMonthBounds

      protected Rectangle getMonthBounds(int row, int column)
      Returns the bounds of the month at the given logical coordinates in the grid of visible months.

      Mapping logical grip position to pixel.

      Parameters:
      row - the rowIndex in the grid of months.
      column - the columnIndex in the grid months.
      Returns:
      the bounds of the month at the given logical logical position.
      See Also:
    • getMonthBounds

      protected Rectangle getMonthBounds(Date date)
      Returns the bounds of the month containing the given date. The bounds are in monthView coordinate system.

      Mapping Date to pixel.

      Parameters:
      date - the Date to return the bounds for. Must not be null.
      Returns:
      the bounds of the month that contains the given date or null if not visible.
      See Also:
    • getMonthHeaderBounds

      protected Rectangle getMonthHeaderBounds(Date date, boolean includeInsets)
      Returns the bounds of the month containing the given date. The bounds are in monthView coordinate system.

      Mapping Date to pixel.

      Parameters:
      date - the Date to return the bounds for. Must not be null.
      Returns:
      the bounds of the month that contains the given date or null if not visible.
      See Also:
    • getMonthSize

      protected Dimension getMonthSize()
      Returns the size of a month.
      Returns:
      the size of a month.
    • getDaySize

      protected Dimension getDaySize()
      Returns the size of a day including the padding.
      Returns:
      the size of a month.
    • getMonthHeaderHeight

      protected int getMonthHeaderHeight()
      Returns the height of the month header.
      Returns:
      the height of the month header.
    • calculateMonthGridLayoutProperties

      private void calculateMonthGridLayoutProperties()
      Called from layout: calculates properties of grid of months.
    • calculateMonthGridBounds

      private void calculateMonthGridBounds()
      Calculates the bounds of the grid of months. CalendarRow/ColumnCount and calendarWidth/Height must be initialized before calling this.
    • calculateCalendarGridY

      private int calculateCalendarGridY()
    • calculateCalendarGridX

      private int calculateCalendarGridX()
    • calculateCalendarGridHeight

      private int calculateCalendarGridHeight()
    • calculateCalendarGridWidth

      private int calculateCalendarGridWidth()
    • calculateMonthGridRowColumnCount

      private void calculateMonthGridRowColumnCount()
      Calculates and updates the numCalCols/numCalRows that determine the number of calendars that can be displayed. Updates the last displayed date if appropriate.
    • isZoomable

      protected boolean isZoomable()
      Returns:
      true if the month view can be zoomed, false otherwise
    • update

      public void update(Graphics g, JComponent c)
      Overridden to extract the background painting for ease-of-use of subclasses.
      Overrides:
      update in class ComponentUI
    • paintBackground

      protected void paintBackground(Graphics g)
      Paints the background of the component. This implementation fill the monthView's area with its background color if opaque, does nothing if not opaque. Subclasses can override but must comply to opaqueness contract.
      Parameters:
      g - the Graphics to fill.
    • paint

      public void paint(Graphics g, JComponent c)
      Overrides:
      paint in class ComponentUI
    • paintMonth

      protected void paintMonth(Graphics g, Calendar month)
      Paints the month represented by the given Calendar. Note: the given calendar must not be changed.
      Parameters:
      g - the graphics to paint into
      month - the calendar specifying the first day of the month to paint, must not be null
    • paintMonthHeader

      protected void paintMonthHeader(Graphics g, Calendar month)
      Paints the header of a month. Note: the given calendar must not be changed.
      Parameters:
      g - the graphics to paint into
      month - the calendar specifying the first day of the month to paint, must not be null
    • paintDayHeader

      protected void paintDayHeader(Graphics g, Calendar month)
      Paints the day column header. Note: the given calendar must not be changed.
      Parameters:
      g - the graphics to paint into
      month - the calendar specifying the first day of the month to paint, must not be null
    • paintWeekHeader

      protected void paintWeekHeader(Graphics g, Calendar month)
      Paints the day column header. Note: the given calendar must not be changed.
      Parameters:
      g - the graphics to paint into
      month - the calendar specifying the first day of the month to paint, must not be null
    • paintDays

      protected void paintDays(Graphics g, Calendar month)
      Paints the days of the given month. Note: the given calendar must not be changed.
      Parameters:
      g - the graphics to paint into
      month - the calendar specifying the first day of the month to paint, must not be null
    • paintDayOfMonth

      protected void paintDayOfMonth(Graphics g, Rectangle bounds, Calendar calendar, CalendarState state)
      Paints a day which is of the current month with the given state.

      PENDING JW: mis-nomer - this is in fact called for rendering any day-related state (including weekOfYear, dayOfWeek headers) and for rendering the month header as well, that is from everywhere. Rename to paintSomethingGeneral. Think about impact for subclasses (what do they really need? feedback please!)

      Parameters:
      g - the graphics to paint into.
      bounds - the rectangle to paint the day into
      calendar - the calendar representing the day to paint
      state - the calendar state
    • paintWeekOfYearSeparator

      protected void paintWeekOfYearSeparator(Graphics g, Calendar month)
      Paints the separator between row header (weeks of year) and days. Note: the given calendar must not be changed.
      Parameters:
      g - the graphics to paint into
      month - the calendar specifying the first day of the month to paint, must not be null
    • paintDaysOfWeekSeparator

      protected void paintDaysOfWeekSeparator(Graphics g, Calendar month)
      Paints the separator between column header (days of week) and days. Note: the given calendar must not be changed.
      Parameters:
      g - the graphics to paint into
      month - the calendar specifying the the first day of the month to paint, must not be null
    • getSeparatorBounds

      private Rectangle getSeparatorBounds(Calendar month, int row, int column)
      Parameters:
      month -
      row -
      column -
      Returns:
    • getWeeks

      protected int getWeeks(Calendar month)
      Returns the number of weeks to paint in the current month, as represented by the given calendar. The calendar is expected to be set to the first of the month. Note: the given calendar must not be changed.
      Parameters:
      month - the calendar specifying the the first day of the month to paint, must not be null
      Returns:
      the number of weeks of this month.
    • traverseMonth

      private void traverseMonth(int arrowType)
    • nextMonth

      private void nextMonth()
    • previousMonth

      private void previousMonth()
    • getCalendar

      protected Calendar getCalendar()
      Returns the monthViews calendar configured to the firstDisplayedDate. NOTE: it's safe to change the calendar state without resetting because it's JXMonthView's responsibility to protect itself.
      Returns:
      the monthView's calendar, configured with the firstDisplayedDate.
    • getCalendar

      protected Calendar getCalendar(Date date)
      Returns the monthViews calendar configured to the given time. NOTE: it's safe to change the calendar state without resetting because it's JXMonthView's responsibility to protect itself.
      Parameters:
      date - the date to configure the calendar with
      Returns:
      the monthView's calendar, configured with the given date.
    • updateLastDisplayedDay

      private void updateLastDisplayedDay(Date first)
      Updates the lastDisplayedDate property based on the given first and visible # of months.
      Parameters:
      first - the date of the first visible day.
    • getLastDisplayedDay

      public Date getLastDisplayedDay()
      Returns the last possible date that can be displayed. This is implemented by the UI since it is in control of layout and may possibly yeild different results based on implementation.

      It's up to the UI to keep this property, based on internal state and the firstDisplayed as controlled by the JXMonthView.

      Specified by:
      getLastDisplayedDay in class MonthViewUI
      Returns:
      Date The date.
    • setFirstDisplayedDay

      protected void setFirstDisplayedDay(Date firstDisplayedDay)
      Updates internal state that depends on the MonthView's firstDisplayedDay property.

      Here: updates lastDisplayedDay.

      Parameters:
      firstDisplayedDay - the firstDisplayedDate to set
    • getFirstDisplayedDay

      protected Date getFirstDisplayedDay()
      Returns the first displayed day. Convenience delegate to
      Returns:
      the firstDisplayed
    • getFirstDisplayedMonth

      protected int getFirstDisplayedMonth()
      Returns:
      the firstDisplayedMonth
    • getFirstDisplayedYear

      protected int getFirstDisplayedYear()
      Returns:
      the firstDisplayedYear
    • getSelection

      protected SortedSet<Date> getSelection()
      Returns:
      the selection
    • getToday

      protected Date getToday()
      Returns:
      the start of today.
    • isToday

      protected boolean isToday(Date date)
      Returns true if the date passed in is the same as today. PENDING JW: really want the exact test?
      Parameters:
      date - long representing the date you want to compare to today.
      Returns:
      true if the date passed is the same as today.
    • canSelectByMode

      private boolean canSelectByMode()
      temporary: removed SelectionMode.NO_SELECTION, replaced all access by this method to enable easy re-adding, if we want it. If not - remove.
    • updateZoomable

      protected void updateZoomable()
      Updates state after the monthView's zoomable property has been changed. This implementation adds/removes the header component if zoomable is true/false respectively.
    • createCalendarHeaderHandler

      protected CalendarHeaderHandler createCalendarHeaderHandler()
      Creates and returns a calendar header handler which provides and configures a component for use in a zoomable monthView. Subclasses may override to return a custom handler.

      This implementation first queries the UIManager for class to use and returns that if available, returns a BasicCalendarHeaderHandler if not.

      Returns:
      a calendar header handler providing a component for use in zoomable monthView.
      See Also:
    • getHeaderFromUIManager

      protected CalendarHeaderHandler getHeaderFromUIManager()
      Returns a CalendarHeaderHandler looked up in the UIManager. This implementation looks for a String registered with a key of CalendarHeaderHandler.uiControllerID. If found it assumes that the value is the class name of the handler and tries to instantiate the handler.
      Returns:
      a CalendarHeaderHandler from the UIManager or null if none available or instantiation failed.
    • instantiateClass

      private CalendarHeaderHandler instantiateClass(String handlerClassName)
      Parameters:
      handlerClassName -
      Returns:
    • instantiateClass

      private CalendarHeaderHandler instantiateClass(Class<?> handlerClass)
      Parameters:
      handlerClass -
      Returns:
    • setCalendarHeaderHandler

      protected void setCalendarHeaderHandler(CalendarHeaderHandler calendarHeaderHandler)
      Parameters:
      calendarHeaderHandler - the calendarHeaderHandler to set
    • getCalendarHeaderHandler

      protected CalendarHeaderHandler getCalendarHeaderHandler()
      Returns:
      the calendarHeaderHandler