tabletab.java

SUN公司eclipse3.2.2经典例子

	/**
	 * Creates the "Style" group.
	 */
	void createStyleGroup () {
		super.createStyleGroup ();
		
		/* Create the extra widgets */
		checkButton = new Button (styleGroup, SWT.CHECK);
		checkButton.setText ("SWT.CHECK");
		fullSelectionButton = new Button (styleGroup, SWT.CHECK);
		fullSelectionButton.setText ("SWT.FULL_SELECTION");
		hideSelectionButton = new Button (styleGroup, SWT.CHECK);
		hideSelectionButton.setText ("SWT.HIDE_SELECTION");
	}
	
	/**
	 * Gets the "Example" widget children's items, if any.
	 *
	 * @return an array containing the example widget children's items
	 */
	Item [] getExampleWidgetItems () {
		Item [] columns = table1.getColumns();
		Item [] items = table1.getItems();
		Item [] allItems = new Item [columns.length + items.length];
		System.arraycopy(columns, 0, allItems, 0, columns.length);
		System.arraycopy(items, 0, allItems, columns.length, items.length);
		return allItems;
	}
	
	/**
	 * Gets the "Example" widget children.
	 */
	Widget [] getExampleWidgets () {
		return new Widget [] {table1};
	}
	
	/**
	 * Returns a list of set/get API method names (without the set/get prefix)
	 * that can be used to set/get values in the example control(s).
	 */
	String[] getMethodNames() {
		return new String[] {"ColumnOrder", "ItemCount", "Selection", "SelectionIndex", "ToolTipText", "TopIndex"};
	}

	String setMethodName(String methodRoot) {
		/* Override to handle special case of int getSelectionIndex()/setSelection(int) */
		return (methodRoot.equals("SelectionIndex")) ? "setSelection" : "set" + methodRoot;
	}

	void packColumns () {
		int columnCount = table1.getColumnCount(); 
		for (int i = 0; i < columnCount; i++) {
			TableColumn tableColumn = table1.getColumn(i);
			tableColumn.pack();
		}
	}

	Object[] parameterForType(String typeName, String value, Widget widget) {
		if (value.equals("")) return new Object[] {new TableItem[0]}; // bug in Table?
		if (typeName.equals("org.eclipse.swt.widgets.TableItem")) {
			TableItem item = findItem(value, ((Table) widget).getItems());
			if (item != null) return new Object[] {item};
		}
		if (typeName.equals("[Lorg.eclipse.swt.widgets.TableItem;")) {
			String[] values = split(value, ',');
			TableItem[] items = new TableItem[values.length];
			for (int i = 0; i < values.length; i++) {
				items[i] = findItem(values[i], ((Table) widget).getItems());
			}
			return new Object[] {items};
		}
		return super.parameterForType(typeName, value, widget);
	}

	TableItem findItem(String value, TableItem[] items) {
		for (int i = 0; i < items.length; i++) {
			TableItem item = items[i];
			if (item.getText().equals(value)) return item;
		}
		return null;
	}

	/**
	 * Gets the text for the tab folder item.
	 */
	String getTabText () {
		return "Table";
	}
	
	/**
	 * Sets the foreground color, background color, and font
	 * of the "Example" widgets to their default settings.
	 * Also sets foreground and background color of TableItem [0]
	 * to default settings.
	 */
	void resetColorsAndFonts () {
		super.resetColorsAndFonts ();
		Color oldColor = itemForegroundColor;
		itemForegroundColor = null;
		setItemForeground ();
		if (oldColor != null) oldColor.dispose();
		oldColor = itemBackgroundColor;
		itemBackgroundColor = null;
		setItemBackground ();
		if (oldColor != null) oldColor.dispose();
		Font oldFont = font;
		itemFont = null;
		setItemFont ();
		if (oldFont != null) oldFont.dispose();
		oldColor = cellForegroundColor;
		cellForegroundColor = null;
		setCellForeground ();
		if (oldColor != null) oldColor.dispose();
		oldColor = cellBackgroundColor;
		cellBackgroundColor = null;
		setCellBackground ();
		if (oldColor != null) oldColor.dispose();
		oldFont = font;
		cellFont = null;
		setCellFont ();
		if (oldFont != null) oldFont.dispose();
	}
	
	/**
	 * Sets the background color of the Row 0 TableItem in column 1.
	 */
	void setCellBackground () {
		if (!instance.startup) {
			table1.getItem (0).setBackground (1, cellBackgroundColor);
		}
		/* Set the background color item's image to match the background color of the cell. */
		Color color = cellBackgroundColor;
		if (color == null) color = table1.getItem (0).getBackground (1);
		TableItem item = colorAndFontTable.getItem(CELL_BACKGROUND_COLOR);
		Image oldImage = item.getImage();
		if (oldImage != null) oldImage.dispose();
		item.setImage (colorImage(color));
	}
	
	/**
	 * Sets the foreground color of the Row 0 TableItem in column 1.
	 */
	void setCellForeground () {
		if (!instance.startup) {
			table1.getItem (0).setForeground (1, cellForegroundColor);
		}
		/* Set the foreground color item's image to match the foreground color of the cell. */
		Color color = cellForegroundColor;
		if (color == null) color = table1.getItem (0).getForeground (1);
		TableItem item = colorAndFontTable.getItem(CELL_FOREGROUND_COLOR);
		Image oldImage = item.getImage();
		if (oldImage != null) oldImage.dispose();
		item.setImage (colorImage(color));
	}
	
	/**
	 * Sets the font of the Row 0 TableItem in column 1.
	 */
	void setCellFont () {
		if (!instance.startup) {
			table1.getItem (0).setFont (1, cellFont);
		}
		/* Set the font item's image to match the font of the item. */
		Font ft = cellFont;
		if (ft == null) ft = table1.getItem (0).getFont (1);
		TableItem item = colorAndFontTable.getItem(CELL_FONT);
		Image oldImage = item.getImage();
		if (oldImage != null) oldImage.dispose();
		item.setImage (fontImage(ft));
		item.setFont(ft);
		colorAndFontTable.layout ();
	}

	/**
	 * Sets the background color of TableItem [0].
	 */
	void setItemBackground () {
		if (!instance.startup) {
			table1.getItem (0).setBackground (itemBackgroundColor);
		}
		/* Set the background color item's image to match the background color of the item. */
		Color color = itemBackgroundColor;
		if (color == null) color = table1.getItem (0).getBackground ();
		TableItem item = colorAndFontTable.getItem(ITEM_BACKGROUND_COLOR);
		Image oldImage = item.getImage();
		if (oldImage != null) oldImage.dispose();
		item.setImage (colorImage(color));
	}
	
	/**
	 * Sets the foreground color of TableItem [0].
	 */
	void setItemForeground () {
		if (!instance.startup) {
			table1.getItem (0).setForeground (itemForegroundColor);
		}
		/* Set the foreground color item's image to match the foreground color of the item. */
		Color color = itemForegroundColor;
		if (color == null) color = table1.getItem (0).getForeground ();
		TableItem item = colorAndFontTable.getItem(ITEM_FOREGROUND_COLOR);
		Image oldImage = item.getImage();
		if (oldImage != null) oldImage.dispose();
		item.setImage (colorImage(color));
	}
	
	/**
	 * Sets the font of TableItem 0.
	 */
	void setItemFont () {
		if (!instance.startup) {
			table1.getItem (0).setFont (itemFont);
		}
		/* Set the font item's image to match the font of the item. */
		Font ft = itemFont;
		if (ft == null) ft = table1.getItem (0).getFont ();
		TableItem item = colorAndFontTable.getItem(ITEM_FONT);
		Image oldImage = item.getImage();
		if (oldImage != null) oldImage.dispose();
		item.setImage (fontImage(ft));
		item.setFont(ft);
		colorAndFontTable.layout ();
	}

	/**
	 * Sets the moveable columns state of the "Example" widgets.
	 */
	void setColumnsMoveable () {
		boolean selection = moveableColumns.getSelection();
		TableColumn[] columns = table1.getColumns();
		for (int i = 0; i < columns.length; i++) {
			columns[i].setMoveable(selection);
		}
	}

	/**
	 * Sets the resizable columns state of the "Example" widgets.
	 */
	void setColumnsResizable () {
		boolean selection = resizableColumns.getSelection();
		TableColumn[] columns = table1.getColumns();
		for (int i = 0; i < columns.length; i++) {
			columns[i].setResizable(selection);
		}
	}

	/**
	 * Sets the state of the "Example" widgets.
	 */
	void setExampleWidgetState () {
		setItemBackground ();
		setItemForeground ();
		setItemFont ();
		setCellBackground ();
		setCellForeground ();
		setCellFont ();
		if (!instance.startup) {
			setColumnsMoveable ();
			setColumnsResizable ();
			setWidgetHeaderVisible ();
			setWidgetSortIndicator ();
			setWidgetLinesVisible ();
		}
		super.setExampleWidgetState ();
		checkButton.setSelection ((table1.getStyle () & SWT.CHECK) != 0);
		fullSelectionButton.setSelection ((table1.getStyle () & SWT.FULL_SELECTION) != 0);
		hideSelectionButton.setSelection ((table1.getStyle () & SWT.HIDE_SELECTION) != 0);
		try {
			TableColumn column = table1.getColumn(0);
			moveableColumns.setSelection (column.getMoveable());
			resizableColumns.setSelection (column.getResizable());
		} catch (IllegalArgumentException ex) {}
		headerVisibleButton.setSelection (table1.getHeaderVisible());
		linesVisibleButton.setSelection (table1.getLinesVisible());
	}
	
	/**
	 * Sets the header visible state of the "Example" widgets.
	 */
	void setWidgetHeaderVisible () {
		table1.setHeaderVisible (headerVisibleButton.getSelection ());
	}
	
	/**
	 * Sets the sort indicator state of the "Example" widgets.
	 */
	void setWidgetSortIndicator () {
		if (sortIndicatorButton.getSelection ()) {
			/* Reset to known state: 'down' on column 0. */
			table1.setSortDirection (SWT.DOWN);
			TableColumn [] columns = table1.getColumns();
			for (int i = 0; i < columns.length; i++) {
				TableColumn column = columns[i];
				if (i == 0) table1.setSortColumn(column);
				SelectionListener listener = new SelectionAdapter() {
					public void widgetSelected(SelectionEvent e) {
						int sortDirection = SWT.DOWN;
						if (e.widget == table1.getSortColumn()) {
							/* If the sort column hasn't changed, cycle down -> up -> none. */
							switch (table1.getSortDirection ()) {
							case SWT.DOWN: sortDirection = SWT.UP; break;
							case SWT.UP: sortDirection = SWT.NONE; break;
							}
						} else {
							table1.setSortColumn((TableColumn)e.widget);
						}
						table1.setSortDirection (sortDirection);
					}
				};
				column.addSelectionListener(listener);
				column.setData("SortListener", listener);	//$NON-NLS-1$
			}
		} else {
			table1.setSortDirection (SWT.NONE);
			TableColumn [] columns = table1.getColumns();
			for (int i = 0; i < columns.length; i++) {
				SelectionListener listener = (SelectionListener)columns[i].getData("SortListener");	//$NON-NLS-1$
				if (listener != null) columns[i].removeSelectionListener(listener);
			}
		}
	}
	
	/**
	 * Sets the lines visible state of the "Example" widgets.
	 */
	void setWidgetLinesVisible () {
		table1.setLinesVisible (linesVisibleButton.getSelection ());
	}
	
	protected void specialPopupMenuItems(Menu menu, Event event) {
    	MenuItem item = new MenuItem(menu, SWT.PUSH);
    	item.setText("getItem(Point) on mouse coordinates");
    	menuMouseCoords = table1.toControl(new Point(event.x, event.y));
    	item.addSelectionListener(new SelectionAdapter() {
    		public void widgetSelected(SelectionEvent e) {
    			eventConsole.append ("getItem(Point(" + menuMouseCoords + ")) returned: " + table1.getItem(menuMouseCoords));
    			eventConsole.append ("\n");
    		};
    	});
	}
}