swtdaychooser.java

Eclipse RCP下编写的工作管理软件代码

	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.events.FocusListener#focusGained(org.eclipse.swt.events.FocusEvent)
	 */
	public void focusGained(FocusEvent event) {
		DayControl selectedDay = getSelectedDayControl();
		selectedDay.setBackground(getSelectionBackgroundColor());
		selectedDay.setForeground(getSelectionForegroundColor());
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.events.FocusListener#focusLost(org.eclipse.swt.events.FocusEvent)
	 */
	public void focusLost(FocusEvent event) {
		DayControl selectedDay = getSelectedDayControl();
		selectedDay.setBackground(getSelectionBackgroundColor());
		selectedDay.setForeground(getSelectionForegroundColor());
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.events.TraverseListener#keyTraversed(org.eclipse.swt.events.TraverseEvent)
	 */
	public void keyTraversed(TraverseEvent event) {
		switch (event.detail) {
		case SWT.TRAVERSE_ARROW_PREVIOUS:
		case SWT.TRAVERSE_ARROW_NEXT:
		case SWT.TRAVERSE_PAGE_PREVIOUS:
		case SWT.TRAVERSE_PAGE_NEXT:
			event.doit = false;
			break;
		case SWT.TRAVERSE_TAB_NEXT:
		case SWT.TRAVERSE_TAB_PREVIOUS:
			event.doit = true;
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.events.KeyListener#keyPressed(org.eclipse.swt.events.KeyEvent)
	 */
	public void keyPressed(KeyEvent event) {
		switch (event.keyCode) {
		case SWT.ARROW_LEFT:
			selectDay(calendar.get(Calendar.DAY_OF_MONTH) - 1);
			break;
		case SWT.ARROW_RIGHT:
			selectDay(calendar.get(Calendar.DAY_OF_MONTH) + 1);
			break;
		case SWT.ARROW_UP:
			selectDay(calendar.get(Calendar.DAY_OF_MONTH) - 7);
			break;
		case SWT.ARROW_DOWN:
			selectDay(calendar.get(Calendar.DAY_OF_MONTH) + 7);
			break;
		case SWT.PAGE_UP:
			setMonth(calendar.get(Calendar.MONTH) - 1);
			break;
		case SWT.PAGE_DOWN:
			setMonth(calendar.get(Calendar.MONTH) + 1);
			break;
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.events.KeyListener#keyReleased(org.eclipse.swt.events.KeyEvent)
	 */
	public void keyReleased(KeyEvent event) {
	}

	/**
	 * Finds position of a control in <code>days</code> array.
	 * 
	 * @param dayControl
	 *            a control to find.
	 * @return an index of <code>dayControl</code> in <code>days</code>
	 *         array, or -1 if not found.
	 */
	private int findDay(Widget dayControl) {
		for (int i = 0; i < days.length; i++) {
			if (days[i] == dayControl) {
				return i;
			}
		}
		return -1;
	}

	private void selectDay(int day) {
		calendar.get(Calendar.DAY_OF_YEAR); // Force calendar update
		if (day >= calendar.getActualMinimum(Calendar.DAY_OF_MONTH)
				&& day <= calendar.getActualMaximum(Calendar.DAY_OF_MONTH)) {
			int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
			// Stay on the same month.
			DayControl selectedDay = getSelectedDayControl();
			selectedDay.setBackground(getBackground());
			if (dayOfWeek == Calendar.SUNDAY) {
				selectedDay.setForeground(getDisplay().getSystemColor(SWT.COLOR_DARK_RED));
			} else {
				selectedDay.setForeground(getForeground());
			}
			calendar.set(Calendar.DAY_OF_MONTH, day);
			selectedDay = getSelectedDayControl();
			selectedDay.setBackground(getSelectionBackgroundColor());
			selectedDay.setForeground(getSelectionForegroundColor());
		} else {
			// Move to a different month.
			calendar.set(Calendar.DAY_OF_MONTH, day);
			drawDays();
		}
		dateChanged();
	}

	private DayControl getSelectedDayControl() {
		return days[calendar.get(Calendar.DAY_OF_MONTH) - 1 - dayOffset];
	}

	private Color getSelectionBackgroundColor() {
		return isFocusControl() ? activeSelectionBackground : inactiveSelectionBackground;
	}

	private Color getSelectionForegroundColor() {
		return isFocusControl() ? activeSelectionForeground : inactiveSelectionForeground;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.widgets.Control#isFocusControl()
	 */
	public boolean isFocusControl() {
		for (Control control = getDisplay().getFocusControl(); control != null; control = control.getParent()) {
			if (control == this) {
				return true;
			}
		}
		return false;
	}

	public void addSWTCalendarListener(SWTCalendarListener listener) {
		this.listeners.add(listener);
	}

	public void removeSWTCalendarListener(SWTCalendarListener listener) {
		this.listeners.remove(listener);
	}

	private void dateChanged() {
		if (!listeners.isEmpty()) {
			SWTCalendarListener[] listenersArray = new SWTCalendarListener[listeners.size()];
			listeners.toArray(listenersArray);
			for (int i = 0; i < listenersArray.length; i++) {
				Event event = new Event();
				event.widget = this;
				event.display = getDisplay();
				event.time = (int) System.currentTimeMillis();
				event.data = calendar.clone();
				listenersArray[i].dateChanged(new SWTCalendarEvent(event));
			}
		}
	}

	public Calendar getCalendar() {
		return (Calendar) calendar.clone();
	}

	public void setLocale(Locale locale) {
		this.locale = locale;
		init();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.widgets.Control#setFont(org.eclipse.swt.graphics.Font)
	 */
	public void setFont(Font font) {
		super.setFont(font);
		for (int i = 0; i < dayTitles.length; i++) {
			dayTitles[i].setFont(font);
		}
		for (int i = 0; i < days.length; i++) {
			days[i].setFont(font);
		}
	}

	static private class DayControl extends Composite implements Listener {
		private Composite filler;

		private Label label;

		public DayControl(Composite parent,int style) {
			super(parent, SWT.NO_FOCUS | style);
			{
				final GridLayout gridLayout = new GridLayout();
				gridLayout.marginWidth = 1;
				gridLayout.marginHeight = 1;
				setLayout(gridLayout);
			}
			filler = new Composite(this, SWT.NO_FOCUS);
			filler.setLayoutData(new GridData(GridData.FILL_BOTH));
			{
				final GridLayout gridLayout = new GridLayout();
				gridLayout.marginWidth = 2;
				gridLayout.marginHeight = 0;
				filler.setLayout(gridLayout);
			}
			filler.addListener(SWT.MouseDown, this);
			filler.addListener(SWT.MouseUp, this);
			filler.addListener(SWT.MouseDoubleClick, this);
			label = new DayLabel(filler, SWT.CENTER | SWT.NO_FOCUS | style);
			label.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_CENTER));
			label.addListener(SWT.MouseDown, this);
			label.addListener(SWT.MouseUp, this);
			label.addListener(SWT.MouseDoubleClick, this);
			setBorderColor(parent.getBackground());
			setBackground(parent.getBackground());
			setFont(parent.getFont());
		}

		public void setText(String text) {
			label.setText(text);
		}

		public String getText() {
			return label.getText();
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.widgets.Control#setFont(org.eclipse.swt.graphics.Font)
		 */
		public void setFont(Font font) {
			super.setFont(font);
			filler.setFont(font);
			label.setFont(font);
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.widgets.Control#setBackground(org.eclipse.swt.graphics.Color)
		 */
		public void setBackground(Color color) {
			filler.setBackground(color);
			label.setBackground(color);
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.widgets.Control#setForeground(org.eclipse.swt.graphics.Color)
		 */
		public void setForeground(Color color) {
			label.setForeground(color);
		}

		public void setBorderColor(Color color) {
			super.setBackground(color);
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
		 */
		public void handleEvent(Event event) {
			notifyListeners(event.type, event);
		}
	}

	static private class DayLabel extends Label {
		private int style =0;
		public DayLabel(Composite parent, int style) {
			super(parent, style);
			this.style=style;
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.widgets.Control#computeSize(int, int, boolean)
		 */
		public Point computeSize(int wHint, int hHint, boolean changed) {
			if (wHint == SWT.DEFAULT) {
				GC gc = new GC(this);
				String test = "xx";
				if((style & CHINESE ) != 0)
					test="三个字";
				wHint = gc.textExtent(test).x; //$NON-NLS-1$
				gc.dispose();
			}
			return super.computeSize(wHint, hHint, changed);
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.swt.widgets.Widget#checkSubclass()
		 */
		protected void checkSubclass() {
		}
	}

	public Map<String, String> getChineseHoliday() {
		return chineseHoliday;
	}

	public void setChineseHoliday(Map<String, String> chineseHoliday) {
		this.chineseHoliday = chineseHoliday;
	}

	public Map<String, String> getGregorianHoliday() {
		return gregorianHoliday;
	}

	public void setGregorianHoliday(Map<String, String> gregorianHoliday) {
		this.gregorianHoliday = gregorianHoliday;
	}
}