basictableui.java

JAVA 所有包

    public void installUI(JComponent c) {
        table = (JTable)c;

        rendererPane = new CellRendererPane();
        table.add(rendererPane);
        installDefaults();
        installDefaults2();
        installListeners();
        installKeyboardActions();
    }

    /**
     * Initialize JTable properties, e.g. font, foreground, and background.
     * The font, foreground, and background properties are only set if their
     * current value is either null or a UIResource, other properties are set
     * if the current value is null.
     *
     * @see #installUI
     */
    protected void installDefaults() {
        LookAndFeel.installColorsAndFont(table, "Table.background",
                                         "Table.foreground", "Table.font");
        // JTable's original row height is 16.  To correctly display the
        // contents on Linux we should have set it to 18, Windows 19 and
        // Solaris 20.  As these values vary so much it's too hard to
        // be backward compatable and try to update the row height, we're
        // therefor NOT going to adjust the row height based on font.  If the
        // developer changes the font, it's there responsability to update
        // the row height.

        LookAndFeel.installProperty(table, "opaque", Boolean.TRUE);

        Color sbg = table.getSelectionBackground();
        if (sbg == null || sbg instanceof UIResource) {
            table.setSelectionBackground(UIManager.getColor("Table.selectionBackground"));
        }

        Color sfg = table.getSelectionForeground();
        if (sfg == null || sfg instanceof UIResource) {
            table.setSelectionForeground(UIManager.getColor("Table.selectionForeground"));
        }

        Color gridColor = table.getGridColor();
        if (gridColor == null || gridColor instanceof UIResource) {
            table.setGridColor(UIManager.getColor("Table.gridColor"));
        }

        // install the scrollpane border
        Container parent = table.getParent();  // should be viewport
        if (parent != null) {
            parent = parent.getParent();  // should be the scrollpane
            if (parent != null && parent instanceof JScrollPane) {
                LookAndFeel.installBorder((JScrollPane)parent, "Table.scrollPaneBorder");
            }
        }

        isFileList = Boolean.TRUE.equals(table.getClientProperty("Table.isFileList"));
    }

    private void installDefaults2() {
	TransferHandler th = table.getTransferHandler();
	if (th == null || th instanceof UIResource) {
	    table.setTransferHandler(defaultTransferHandler);
	}
    }

    /**
     * Attaches listeners to the JTable.
     */
    protected void installListeners() {
        focusListener = createFocusListener();
        keyListener = createKeyListener();
        mouseInputListener = createMouseInputListener();

        table.addFocusListener(focusListener);
        table.addKeyListener(keyListener);
        table.addMouseListener(mouseInputListener);
        table.addMouseMotionListener(mouseInputListener);
        table.addPropertyChangeListener(getHandler());
        if (isFileList) {
            table.getSelectionModel().addListSelectionListener(getHandler());
        }
    }

    /**
     * Register all keyboard actions on the JTable.
     */
    protected void installKeyboardActions() {
        LazyActionMap.installLazyActionMap(table, BasicTableUI.class,
                "Table.actionMap");

	InputMap inputMap = getInputMap(JComponent.
					WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
	SwingUtilities.replaceUIInputMap(table,
				JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT,
				inputMap);
    }

    InputMap getInputMap(int condition) {
        if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) {
            InputMap keyMap =
                (InputMap)DefaultLookup.get(table, this,
                                            "Table.ancestorInputMap");
            return keyMap;
        }
        return null;
    }

    static void loadActionMap(LazyActionMap map) {
        // IMPORTANT: There is a very close coupling between the parameters
        // passed to the Actions constructor. Only certain parameter
        // combinations are supported. For example, the following Action would
        // not work as expected:
        //     new Actions(Actions.NEXT_ROW_CELL, 1, 4, false, true)
        // Actions which move within the selection only (having a true
        // inSelection parameter) require that one of dx or dy be
        // zero and the other be -1 or 1. The point of this warning is
        // that you should be very careful about making sure a particular
        // combination of parameters is supported before changing or
        // adding anything here.
        
        map.put(new Actions(Actions.NEXT_COLUMN, 1, 0,
                false, false));
        map.put(new Actions(Actions.NEXT_COLUMN_CHANGE_LEAD, 1, 0,
                false, false));
        map.put(new Actions(Actions.PREVIOUS_COLUMN, -1, 0,
                false, false));
        map.put(new Actions(Actions.PREVIOUS_COLUMN_CHANGE_LEAD, -1, 0,
                false, false));
        map.put(new Actions(Actions.NEXT_ROW, 0, 1,
                false, false));
        map.put(new Actions(Actions.NEXT_ROW_CHANGE_LEAD, 0, 1,
                false, false));
        map.put(new Actions(Actions.PREVIOUS_ROW, 0, -1,
                false, false));
        map.put(new Actions(Actions.PREVIOUS_ROW_CHANGE_LEAD, 0, -1,
                false, false));
        map.put(new Actions(Actions.NEXT_COLUMN_EXTEND_SELECTION,
                1, 0, true, false));
        map.put(new Actions(Actions.PREVIOUS_COLUMN_EXTEND_SELECTION,
                -1, 0, true, false));
        map.put(new Actions(Actions.NEXT_ROW_EXTEND_SELECTION,
                0, 1, true, false));
        map.put(new Actions(Actions.PREVIOUS_ROW_EXTEND_SELECTION,
                0, -1, true, false));
        map.put(new Actions(Actions.SCROLL_UP_CHANGE_SELECTION,
	        false, false, true, false));
        map.put(new Actions(Actions.SCROLL_DOWN_CHANGE_SELECTION,
	        false, true, true, false));
        map.put(new Actions(Actions.FIRST_COLUMN,
	        false, false, false, true));
        map.put(new Actions(Actions.LAST_COLUMN,
	        false, true, false, true));

        map.put(new Actions(Actions.SCROLL_UP_EXTEND_SELECTION,
		true, false, true, false));
        map.put(new Actions(Actions.SCROLL_DOWN_EXTEND_SELECTION,
                true, true, true, false));
        map.put(new Actions(Actions.FIRST_COLUMN_EXTEND_SELECTION,
                true, false, false, true));
        map.put(new Actions(Actions.LAST_COLUMN_EXTEND_SELECTION,
                true, true, false, true));

	map.put(new Actions(Actions.FIRST_ROW, false, false, true, true));
	map.put(new Actions(Actions.LAST_ROW, false, true, true, true));

	map.put(new Actions(Actions.FIRST_ROW_EXTEND_SELECTION,
                true, false, true, true));
	map.put(new Actions(Actions.LAST_ROW_EXTEND_SELECTION,
                true, true, true, true));

	map.put(new Actions(Actions.NEXT_COLUMN_CELL,
                1, 0, false, true));
	map.put(new Actions(Actions.PREVIOUS_COLUMN_CELL,
                -1, 0, false, true));
	map.put(new Actions(Actions.NEXT_ROW_CELL, 0, 1, false, true));
	map.put(new Actions(Actions.PREVIOUS_ROW_CELL,
                0, -1, false, true));

	map.put(new Actions(Actions.SELECT_ALL));
        map.put(new Actions(Actions.CLEAR_SELECTION));
	map.put(new Actions(Actions.CANCEL_EDITING));
	map.put(new Actions(Actions.START_EDITING));

        map.put(TransferHandler.getCutAction().getValue(Action.NAME),
                TransferHandler.getCutAction());
        map.put(TransferHandler.getCopyAction().getValue(Action.NAME),
                TransferHandler.getCopyAction());
        map.put(TransferHandler.getPasteAction().getValue(Action.NAME),
                TransferHandler.getPasteAction());

	map.put(new Actions(Actions.SCROLL_LEFT_CHANGE_SELECTION,
                false, false, false, false));
	map.put(new Actions(Actions.SCROLL_RIGHT_CHANGE_SELECTION,
                false, true, false, false));
	map.put(new Actions(Actions.SCROLL_LEFT_EXTEND_SELECTION,
                true, false, false, false));
	map.put(new Actions(Actions.SCROLL_RIGHT_EXTEND_SELECTION,
                true, true, false, false));

        map.put(new Actions(Actions.ADD_TO_SELECTION));
        map.put(new Actions(Actions.TOGGLE_AND_ANCHOR));
        map.put(new Actions(Actions.EXTEND_TO));
        map.put(new Actions(Actions.MOVE_SELECTION_TO));
        map.put(new Actions(Actions.FOCUS_HEADER));
    }

//  Uninstallation

    public void uninstallUI(JComponent c) {
        uninstallDefaults();
        uninstallListeners();
        uninstallKeyboardActions();

        table.remove(rendererPane);
        rendererPane = null;
        table = null;
    }

    protected void uninstallDefaults() {
	if (table.getTransferHandler() instanceof UIResource) {
	    table.setTransferHandler(null);
	}
    }

    protected void uninstallListeners() {
        table.removeFocusListener(focusListener);
        table.removeKeyListener(keyListener);
        table.removeMouseListener(mouseInputListener);
        table.removeMouseMotionListener(mouseInputListener);
        table.removePropertyChangeListener(getHandler());
        if (isFileList) {
            table.getSelectionModel().removeListSelectionListener(getHandler());
        }

        focusListener = null;
        keyListener = null;
        mouseInputListener = null;
        handler = null;
    }

    protected void uninstallKeyboardActions() {
	SwingUtilities.replaceUIInputMap(table, JComponent.
				   WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null);
        SwingUtilities.replaceUIActionMap(table, null);
    }

    /**
     * Returns the baseline.
     *
     * @throws NullPointerException {@inheritDoc}
     * @throws IllegalArgumentException {@inheritDoc}
     * @see javax.swing.JComponent#getBaseline(int, int)
     * @since 1.6
     */
    public int getBaseline(JComponent c, int width, int height) {
        super.getBaseline(c, width, height);
        UIDefaults lafDefaults = UIManager.getLookAndFeelDefaults();
        Component renderer = (Component)lafDefaults.get(
                BASELINE_COMPONENT_KEY);
        if (renderer == null) {
            DefaultTableCellRenderer tcr = new DefaultTableCellRenderer();
            renderer = tcr.getTableCellRendererComponent(
                    table, "a", false, false, -1, -1);
            lafDefaults.put(BASELINE_COMPONENT_KEY, renderer);
        }
        renderer.setFont(table.getFont());
        int rowMargin = table.getRowMargin();
        return renderer.getBaseline(Integer.MAX_VALUE, table.getRowHeight() -
                                    rowMargin) + rowMargin / 2;
    }

    /**
     * Returns an enum indicating how the baseline of the component
     * changes as the size changes.
     *
     * @throws NullPointerException {@inheritDoc}
     * @see javax.swing.JComponent#getBaseline(int, int)
     * @since 1.6
     */
    public Component.BaselineResizeBehavior getBaselineResizeBehavior(
            JComponent c) {
        super.getBaselineResizeBehavior(c);
        return Component.BaselineResizeBehavior.CONSTANT_ASCENT;
    }

//
// Size Methods
//

    private Dimension createTableSize(long width) {
	int height = 0;
	int rowCount = table.getRowCount();
	if (rowCount > 0 && table.getColumnCount() > 0) {
	    Rectangle r = table.getCellRect(rowCount-1, 0, true);
	    height = r.y + r.height;
	}
	// Width is always positive. The call to abs() is a workaround for
	// a bug in the 1.1.6 JIT on Windows.
	long tmp = Math.abs(width);
        if (tmp > Integer.MAX_VALUE) {
            tmp = Integer.MAX_VALUE;
        }
	return new Dimension((int)tmp, height);
    }

    /**
     * Return the minimum size of the table. The minimum height is the
     * row height times the number of rows.
     * The minimum width is the sum of the minimum widths of each column.
     */
    public Dimension getMinimumSize(JComponent c) {
        long width = 0;
        Enumeration enumeration = table.getColumnModel().getColumns();
        while (enumeration.hasMoreElements()) {
            TableColumn aColumn = (TableColumn)enumeration.nextElement();
            width = width + aColumn.getMinWidth();
        }
        return createTableSize(width);
    }

    /**
     * Return the preferred size of the table. The preferred height is the
     * row height times the number of rows.
     * The preferred width is the sum of the preferred widths of each column.
     */
    public Dimension getPreferredSize(JComponent c) {
        long width = 0;
        Enumeration enumeration = table.getColumnModel().getColumns();
        while (enumeration.hasMoreElements()) {
            TableColumn aColumn = (TableColumn)enumeration.nextElement();
            width = width + aColumn.getPreferredWidth();
        }