Examples of org.eclipse.swt.widgets.MenuItem.addSelectionListener()

org.eclipse.swt.widgets.MenuItem.addSelectionListener()
Adds the listener to the collection of listeners who will be notified when the menu item is selected by the user, by sending it one of the messages defined in the SelectionListener interface.
When widgetSelected is called, the stateMask field of the event object is valid. widgetDefaultSelected is not called.

When the SWT.RADIO style bit is set, the widgetSelected method is also called when the receiver loses selection because another item in the same radio group was selected by the user. During widgetSelected the application can use getSelection() to determine the current selected state of the receiver.
@param listener the listener which should be notified when the menu item is selected by the user @exception IllegalArgumentException
- ERROR_NULL_ARGUMENT - if the listener is null
@exception SWTException
- ERROR_WIDGET_DISPOSED - if the receiver has been disposed
- ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
@see SelectionListener @see #removeSelectionListener @see SelectionEvent


        /* Filter: Unread */
        final MenuItem showUnread = new MenuItem(menu, SWT.RADIO);
        showUnread.setText(NewsFilter.Type.SHOW_UNREAD.getName());
        showUnread.setSelection(NewsFilter.Type.SHOW_UNREAD == filter.getType());
        showUnread.addSelectionListener(new SelectionAdapter() {


          @Override
          public void widgetSelected(SelectionEvent e) {
            if (showUnread.getSelection() && filter.getType() != NewsFilter.Type.SHOW_UNREAD)
              doFilter(NewsFilter.Type.SHOW_UNREAD, true, true);

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        /* Filter: Sticky */
        final MenuItem showSticky = new MenuItem(menu, SWT.RADIO);
        showSticky.setText(NewsFilter.Type.SHOW_STICKY.getName());
        showSticky.setSelection(NewsFilter.Type.SHOW_STICKY == filter.getType());
        showSticky.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            if (showSticky.getSelection() && filter.getType() != NewsFilter.Type.SHOW_STICKY)
              doFilter(NewsFilter.Type.SHOW_STICKY, true, true);
          }

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        /* Filter: Recent News */
        final MenuItem showRecent = new MenuItem(menu, SWT.RADIO);
        showRecent.setText(NewsFilter.Type.SHOW_RECENT.getName());
        showRecent.setSelection(NewsFilter.Type.SHOW_RECENT == filter.getType());
        showRecent.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            if (showRecent.getSelection() && filter.getType() != NewsFilter.Type.SHOW_RECENT)
              doFilter(NewsFilter.Type.SHOW_RECENT, true, true);
          }

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        /* Filter: Last 5 Days */
        final MenuItem showLastFiveDays = new MenuItem(menu, SWT.RADIO);
        showLastFiveDays.setText(NewsFilter.Type.SHOW_LAST_5_DAYS.getName());
        showLastFiveDays.setSelection(NewsFilter.Type.SHOW_LAST_5_DAYS == filter.getType());
        showLastFiveDays.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            if (showLastFiveDays.getSelection() && filter.getType() != NewsFilter.Type.SHOW_LAST_5_DAYS)
              doFilter(NewsFilter.Type.SHOW_LAST_5_DAYS, true, true);
          }

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          new MenuItem(menu, SWT.SEPARATOR);


          /* Convert Filter to Saved Search */
          final MenuItem createSavedSearch = new MenuItem(menu, SWT.RADIO);
          createSavedSearch.setText("Save as new Search...");
          createSavedSearch.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
              onCreateSavedSearch();
            }
          });

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        /* Group: None */
        final MenuItem noGrouping = new MenuItem(menu, SWT.RADIO);
        noGrouping.setText(NewsGrouping.Type.NO_GROUPING.getName());
        noGrouping.setSelection(grouping.getType() == NewsGrouping.Type.NO_GROUPING);
        noGrouping.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            if (noGrouping.getSelection() && grouping.getType() != NewsGrouping.Type.NO_GROUPING)
              doGrouping(NewsGrouping.Type.NO_GROUPING, true, true);
          }

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        /* Group: By Date */
        final MenuItem groupByDate = new MenuItem(menu, SWT.RADIO);
        groupByDate.setText(NewsGrouping.Type.GROUP_BY_DATE.getName());
        groupByDate.setSelection(grouping.getType() == NewsGrouping.Type.GROUP_BY_DATE);
        groupByDate.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            if (groupByDate.getSelection() && grouping.getType() != NewsGrouping.Type.GROUP_BY_DATE)
              doGrouping(NewsGrouping.Type.GROUP_BY_DATE, true, true);
          }

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        /* Group: By Author */
        final MenuItem groupByAuthor = new MenuItem(menu, SWT.RADIO);
        groupByAuthor.setText(NewsGrouping.Type.GROUP_BY_AUTHOR.getName());
        groupByAuthor.setSelection(grouping.getType() == NewsGrouping.Type.GROUP_BY_AUTHOR);
        groupByAuthor.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            if (groupByAuthor.getSelection() && grouping.getType() != NewsGrouping.Type.GROUP_BY_AUTHOR)
              doGrouping(NewsGrouping.Type.GROUP_BY_AUTHOR, true, true);
          }

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        /* Group: By Category */
        final MenuItem groupByCategory = new MenuItem(menu, SWT.RADIO);
        groupByCategory.setText(NewsGrouping.Type.GROUP_BY_CATEGORY.getName());
        groupByCategory.setSelection(grouping.getType() == NewsGrouping.Type.GROUP_BY_CATEGORY);
        groupByCategory.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            if (groupByCategory.getSelection() && grouping.getType() != NewsGrouping.Type.GROUP_BY_CATEGORY)
              doGrouping(NewsGrouping.Type.GROUP_BY_CATEGORY, true, true);
          }

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        /* Group: By Topic */
        final MenuItem groupByTopic = new MenuItem(menu, SWT.RADIO);
        groupByTopic.setText(NewsGrouping.Type.GROUP_BY_TOPIC.getName());
        groupByTopic.setSelection(grouping.getType() == NewsGrouping.Type.GROUP_BY_TOPIC);
        groupByTopic.addSelectionListener(new SelectionAdapter() {
          @Override
          public void widgetSelected(SelectionEvent e) {
            if (groupByTopic.getSelection() && grouping.getType() != NewsGrouping.Type.GROUP_BY_TOPIC)
              doGrouping(NewsGrouping.Type.GROUP_BY_TOPIC, true, true);
          }

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