org.eclipse.swt.widgets.Table#getColumnCount ( )源码实例Demo

public static int getClickedItemColumnIndex(Table table, TableItem item, 
    Point point){
  int column = -1;
  if (item != null) {
    // Determine which column was selected
    for (int i = 0, n = table.getColumnCount(); i < n; i++) {
      Rectangle rect = item.getBounds(i);
      if (rect.contains(point)) {
        // This is the selected column
        column = i;
        break;
      }
    }
  }
  return column;
}
 

public static int getClickedItemColumnIndex(Table table, TableItem item,
		Point point) {
	int column = -1;
	if (item != null) {
		// Determine which column was selected
		for (int i = 0, n = table.getColumnCount(); i < n; i++) {
			Rectangle rect = item.getBounds(i);
			if (rect.contains(point)) {
				// This is the selected column
				column = i;
				break;
			}
		}
	}
	return column;
}
 

/**
 * Sets the segment provider, use only in test, only run in display thread
 *
 * @param segmentProvider
 *            the segment provider
 * @since 1.2
 */
@VisibleForTesting
public void setSegmentProvider(ISegmentStoreProvider segmentProvider) {
    fSegmentProvider = segmentProvider;
    // Sort order of the content provider is by start time by default
    getTableViewer().setContentProvider(new SegmentStoreContentProvider());

    Table table = getTableViewer().getTable();
    table.setRedraw(false);
    while (table.getColumnCount() > 0) {
        table.getColumn(0).dispose();
    }
    createColumns();
    createProviderColumns();
    getTableViewer().getTable().addSelectionListener(new TableSelectionListener());
    addPackListener();
    table.setRedraw(true);
}
 

protected void packAndFillLastColumn(Table table) {
    int columnsWidth = 0;
    for (int i = 0; i < table.getColumnCount() - 1; i++) {
        columnsWidth += table.getColumn(i).getWidth();
    }
    TableColumn lastColumn = table.getColumn(table.getColumnCount() - 1);
    lastColumn.pack();

    Rectangle area = table.getClientArea();

    Point preferredSize = table.computeSize(SWT.DEFAULT, SWT.DEFAULT);
    int width = area.width - 2*table.getBorderWidth();

    if (preferredSize.y > area.height + table.getHeaderHeight()) {
        // Subtract the scrollbar width from the total column width
        // if a vertical scrollbar will be required
        Point vBarSize = table.getVerticalBar().getSize();
        width -= vBarSize.x;
    }

    // last column is packed, so that is the minimum. If more space is available, add it.
    if(lastColumn.getWidth() < width - columnsWidth) {
        lastColumn.setWidth(width - columnsWidth + 4);
    }
}
 

public void render(Section section, FormToolkit toolkit) {
	Composite composite = UI.sectionClient(section, toolkit, 1);
	String[] columnTitles = getColumnTitles();
	viewer = Tables.createViewer(composite, columnTitles);
	viewer.setLabelProvider(new FactorLabel());
	Action copy = TableClipboard.onCopy(viewer);
	Actions.bind(viewer, copy);
	Tables.bindColumnWidths(viewer, 0.2, 0.1, 0.1, 0.1);
	createModifySupport();
	Table table = viewer.getTable();
	for (int i = 0; i < table.getColumnCount(); i++) {
		if (i < 4)
			continue;
		TableColumn column = table.getColumn(i);
		if (!editor.hasAnyComment("allocationFactors") || i % 2 == 0) {
			column.setWidth(80);
			column.setToolTipText(columnTitles[i]);
		} else {
			column.setWidth(24);
		}
	}
	for (int i = 3; i < table.getColumnCount(); i++) {
		viewer.getTable().getColumns()[i].setAlignment(SWT.RIGHT);
	}
}
 

protected void storeLastWidths(Table table) {
    if (lastWidths == null) {
        lastWidths = new int[table.getColumnCount()];
    }
    TableColumn[] columns = table.getColumns();
    for (int col = 0; col < columns.length; col++) {
        lastWidths[col] = columns[col].getWidth();
    }
}
 

public static void resizeColumnsByCaption(Table table){
   GC gc = new GC(table);
   try {
   	for (int i = 0; i < table.getColumnCount(); i++) {
   		int maxTextExtent = getColumnTextWidth(table, gc, i);
   		table.getColumn(i).setWidth(maxTextExtent);
   	}
} finally {
	gc.dispose();
}
 }
 

public static void resizeColumnsByCaption(Table table) {
	GC gc = new GC(table);
	try {
		for (int i = 0; i < table.getColumnCount(); i++) {
			int maxTextExtent = getColumnTextWidth(table, gc, i);
			table.getColumn(i).setWidth(maxTextExtent);
		}
	} finally {
		gc.dispose();
	}
}
 

/**
 * Export content of a table to TSV file
 * @param table
 *              the table to export
 * @param stream
 *              the output stream
 */
public static void exportTableToTsv(Table table, @Nullable OutputStream stream) {
    if (table == null || stream == null) {
        return;
    }
    try (PrintWriter pw = new PrintWriter(stream)) {
        int size = table.getItemCount();
        List<String> columns = new ArrayList<>();
        for (int i = 0; i < table.getColumnCount(); i++) {
            TableColumn column = table.getColumn(i);
            if (column == null) {
                return;
            }
            String columnName = String.valueOf(column.getText());
            if (columnName.isEmpty() && i == table.getColumnCount() - 1) {
                // Linux GTK2 undocumented feature
                break;
            }
            columns.add(columnName);
        }
        pw.println(Joiner.on('\t').join(columns));
        for (int i = 0; i < size; i++) {
            TableItem item = table.getItem(i);
            if (item == null) {
                continue;
            }
            List<String> data = new ArrayList<>();
            for (int col = 0; col < columns.size(); col++) {
                data.add(String.valueOf(item.getText(col)));
            }
            pw.println(Joiner.on('\t').join(data));
        }
    }
}
 

private static void copyItems(Table table, Converter converter,
		StringBuilder buffer) {
	int cols = table.getColumnCount();
	for (TableItem item : table.getSelection()) {
		for (int col = 0; col < cols; col++) {
			String s = converter.asString(item, col);
			buffer.append(s);
			if (col != (cols - 1)) {
				buffer.append('\t');
			}
		}
		buffer.append('\n');
	}
}
 

private void saveResults() {
	FileDialog fd = new FileDialog(getSite().getWorkbenchWindow().getShell(), SWT.SAVE);
	fd.setText("Save Results");
	String[] filterExt = { "*.txt" };
	fd.setFilterExtensions(filterExt);
	String selected = fd.open();
	if(selected != null) {
		try {
			BufferedWriter out = new BufferedWriter(new FileWriter(selected));
			Table table = tableViewer.getTable();
			TableColumn[] columns = table.getColumns();
			for(int i=0; i<columns.length; i++) {
				if(i == columns.length-1)
					out.write(columns[i].getText());
				else
					out.write(columns[i].getText() + "\t");
			}
			out.newLine();
			for(int i=0; i<table.getItemCount(); i++) {
				TableItem tableItem = table.getItem(i);
				for(int j=0; j<table.getColumnCount(); j++) {
					if(j == table.getColumnCount()-1)
						out.write(tableItem.getText(j));
					else
						out.write(tableItem.getText(j) + "\t");
				}
				out.newLine();
			}
			out.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}
 

private ItemPkg getCell(Event event, Table table) {
	ItemPkg result = null;
	TableItem item = table.getItem(new Point(event.x,event.y));

	if (item != null) {
		for (int i = 0; i < table.getColumnCount(); i++) {
			if (item.getBounds(i).contains(event.x, event.y)) {
				result = new ItemPkg(item,i);
				break;
			}
		}
	}
	return result;
}
 

private ItemPkg getCell(MouseEvent event, Table table) {
	ItemPkg result = null;
	TableItem item = table.getItem(new Point(event.x,event.y));

	if (item != null) {
		for (int i = 0; i < table.getColumnCount(); i++) {
			if (item.getBounds(i).contains(event.x, event.y)) {
				result = new ItemPkg(item,i);
				break;
			}
		}
	}
	return result;
}
 

private static void copyHeaders(Table table, StringBuilder text) {
	int cols = table.getColumnCount();
	for (int col = 0; col < cols; col++) {
		TableColumn column = table.getColumn(col);
		String s = column.getText();
		text.append(s == null ? "" : s);
		if (col != (cols - 1))
			text.append('\t');
	}
	text.append('\n');
}
 

public static void sortTable(Table table, TableColumn column) {
	TableItem[] items = table.getItems();
	int rows = items.length;
	int dir = table.getSortDirection() == SWT.DOWN ? 1 : -1;
	TableColumn currentColumn = table.getSortColumn();
	int columnNum = 0;
	for (int j = 0; j < table.getColumnCount(); j++) {
		if (table.getColumn(j).equals(column)) {
			columnNum = j;
			break;
		}
	}
	if (column.equals(currentColumn))
		dir = -dir;
	else
		dir = 1;

	// sort an index map, then move the actual rows
	int[] map = new int[rows];
	for (int i = 0; i < rows; i++)
		map[i] = i;

	for (int i = 0; i < rows - 1; i++) {
		for (int j = i + 1; j < rows; j++) {
			TableItem a = items[map[i]];
			TableItem b = items[map[j]];
			if ((a.getText(columnNum).toLowerCase().compareTo(b.getText(columnNum).toLowerCase()) * dir > 0)) {
				int t = map[i];
				map[i] = map[j];
				map[j] = t;
			}
		}
	}

	// can't move existing items or delete first, so append new items to the end and then delete existing rows
	for (int i = 0; i < rows; i++) {
		int n = map[i];
		TableItem item = new TableItem(table, SWT.NONE);
		for (int j = 0; j < table.getColumnCount(); j++) {
			item.setText(j, items[n].getText(j));
		}
		item.setData(items[n].getData());
		items[n].dispose();
	}

	table.setSortDirection(dir == 1 ? SWT.DOWN : SWT.UP);
	table.setSortColumn(column);
}
 

private boolean resizedColumnIsNotTheLastColumn(int resizedColumnNumber, Table table) {
    return resizedColumnNumber < table.getColumnCount()-1;
}
 

public static void resizeColumsByContent(Table table){
  for (int i = 0; i < table.getColumnCount(); i++) {
    table.getColumn(i).pack();
  }
}
 

public static void resizeColumsByContent(Table table) {
	for (int i = 0; i < table.getColumnCount(); i++) {
		table.getColumn(i).pack();
	}
}
 

public void saveColumnWeights(Table table, String qualifier) {
    for (int i = 0; i < table.getColumnCount(); i++) {
        settings.put(qualifier + ".columnWeight" + i, getColumnWeight(table, i)); //$NON-NLS-1$
    }        
}
 

public boolean createLaborblatt(final Patient pat, final String[] header, final TableItem[] rows){
	Brief br =
		text.createFromTemplateName(text.getAktuelleKons(), TT_LABPAPER,
			Brief.LABOR,
			pat, null);
	if (br == null) {
		return false;
	}
	Table table = rows[0].getParent();
	int cols = table.getColumnCount();
	int[] colsizes = new int[cols];
	float first = 25;
	float second = 10;
	if (cols > 2) {
		int rest = Math.round((100f - first - second) / (cols - 2f));
		for (int i = 2; i < cols; i++) {
			colsizes[i] = rest;
		}
	}
	colsizes[0] = Math.round(first);
	colsizes[1] = Math.round(second);
	
	LinkedList<String[]> usedRows = new LinkedList<String[]>();
	usedRows.add(header);
	for (int i = 0; i < rows.length; i++) {
		boolean used = false;
		String[] row = new String[cols];
		for (int j = 0; j < cols; j++) {
			row[j] = rows[i].getText(j);
			if ((j > 1) && (row[j].length() > 0)) {
				used = true;
				// break;
			}
		}
		if (used == true) {
			usedRows.add(row);
		}
	}
	String[][] fld = usedRows.toArray(new String[0][]);
	boolean ret = text.getPlugin().insertTable("[Laborwerte]", //$NON-NLS-1$
		ITextPlugin.FIRST_ROW_IS_HEADER, fld, colsizes);
	text.saveBrief(br, Brief.LABOR);
	return ret;
}