basictableui.java

JAVA 所有包

                    setValueIsAdjusting(true);
                }
                adjustSelection(e);
            }
        }

        private void mousePressedDND(MouseEvent e) {
            pressedEvent = e;
            boolean grabFocus = true;
            dragStarted = false;

            if (canStartDrag() && DragRecognitionSupport.mousePressed(e)) {

                dragPressDidSelection = false;

                if (e.isControlDown() && isFileList) {
                    // do nothing for control - will be handled on release
                    // or when drag starts
                    return;
                } else if (!e.isShiftDown() && table.isCellSelected(pressedRow, pressedCol)) {
                    // clicking on something that's already selected
                    // and need to make it the lead now
                    table.getSelectionModel().addSelectionInterval(pressedRow,
                                                                   pressedRow);
                    table.getColumnModel().getSelectionModel().
                        addSelectionInterval(pressedCol, pressedCol);

                    return;
                }

                dragPressDidSelection = true;

                // could be a drag initiating event - don't grab focus
                grabFocus = false;
            } else if (!isFileList) {
                // When drag can't happen, mouse drags might change the selection in the table
                // so we want the isAdjusting flag to be set
                setValueIsAdjusting(true);
            }

            if (grabFocus) {
                SwingUtilities2.adjustFocus(table);
            }

            adjustSelection(e);
	}

        private void adjustSelection(MouseEvent e) {
            // Fix for 4835633
            if (outsidePrefSize) {
                // If shift is down in multi-select, we should just return.
                // For single select or non-shift-click, clear the selection
                if (e.getID() ==  MouseEvent.MOUSE_PRESSED &&
                    (!e.isShiftDown() ||
                     table.getSelectionModel().getSelectionMode() ==
                     ListSelectionModel.SINGLE_SELECTION)) {
                    table.clearSelection();
                    TableCellEditor tce = table.getCellEditor();
                    if (tce != null) {
                        tce.stopCellEditing();
                    }
                }
                return;
            }
	    // The autoscroller can generate drag events outside the
            // table's range.
            if ((pressedCol == -1) || (pressedRow == -1)) {
                return;
            }

            boolean dragEnabled = table.getDragEnabled();

            if (!dragEnabled && !isFileList && table.editCellAt(pressedRow, pressedCol, e)) {
                setDispatchComponent(e);
                repostEvent(e);
            }

            CellEditor editor = table.getCellEditor();
            if (dragEnabled || editor == null || editor.shouldSelectCell(e)) {
                table.changeSelection(pressedRow, pressedCol, e.isControlDown(), e.isShiftDown());
            }
        }

        public void valueChanged(ListSelectionEvent e) {
            if (timer != null) {
                timer.stop();
                timer = null;
            }
        }

        public void actionPerformed(ActionEvent ae) {
            table.editCellAt(pressedRow, pressedCol, null);
            Component editorComponent = table.getEditorComponent();
            if (editorComponent != null && !editorComponent.hasFocus()) {
                SwingUtilities2.compositeRequestFocus(editorComponent);
            }
            return;
        }

        private void maybeStartTimer() {
            if (!shouldStartTimer) {
                return;
            }

            if (timer == null) {
                timer = new Timer(1200, this);
                timer.setRepeats(false);
            }

            timer.start();
        }

        public void mouseReleased(MouseEvent e) {
            if (SwingUtilities2.shouldIgnore(e, table)) {
                return;
            }

            if (table.getDragEnabled()) {
                mouseReleasedDND(e);
            } else {
                if (isFileList) {
                    maybeStartTimer();
                }
            }

            pressedEvent = null;
            repostEvent(e);
            dispatchComponent = null;
            setValueIsAdjusting(false);
        }

        private void mouseReleasedDND(MouseEvent e) {
            MouseEvent me = DragRecognitionSupport.mouseReleased(e);
            if (me != null) {
                SwingUtilities2.adjustFocus(table);
                if (!dragPressDidSelection) {
                    adjustSelection(me);
                }
            }

            if (!dragStarted) {
                if (isFileList) {
                    maybeStartTimer();
                    return;
                }
                
                Point p = e.getPoint();

                if (pressedEvent != null &&
                        table.rowAtPoint(p) == pressedRow &&
                        table.columnAtPoint(p) == pressedCol &&
                        table.editCellAt(pressedRow, pressedCol, pressedEvent)) {

                    setDispatchComponent(pressedEvent);
                    repostEvent(pressedEvent);

                    // This may appear completely odd, but must be done for backward
                    // compatibility reasons. Developers have been known to rely on
                    // a call to shouldSelectCell after editing has begun.
                    CellEditor ce = table.getCellEditor();
                    if (ce != null) {
                        ce.shouldSelectCell(pressedEvent);
                    }
                }
            }
        }

        public void mouseEntered(MouseEvent e) {}

        public void mouseExited(MouseEvent e) {}

        public void mouseMoved(MouseEvent e) {}

        public void dragStarting(MouseEvent me) {
            dragStarted = true;

            if (me.isControlDown() && isFileList) {
                table.getSelectionModel().addSelectionInterval(pressedRow,
                                                               pressedRow);
                table.getColumnModel().getSelectionModel().
                    addSelectionInterval(pressedCol, pressedCol);
            }

            pressedEvent = null;
        }

        public void mouseDragged(MouseEvent e) {
            if (SwingUtilities2.shouldIgnore(e, table)) {
                return;
            }

            if (table.getDragEnabled() &&
                    (DragRecognitionSupport.mouseDragged(e, this) || dragStarted)) {

                return;
            }

            repostEvent(e);

            // Check isFileList:
            // Until we support drag-selection, dragging should not change
            // the selection (act like single-select).
            if (isFileList || table.isEditing()) {
                return;
            }

            Point p = e.getPoint();
            int row = table.rowAtPoint(p);
            int column = table.columnAtPoint(p);
            // The autoscroller can generate drag events outside the
            // table's range.
            if ((column == -1) || (row == -1)) {
                return;
            }

            table.changeSelection(row, column, e.isControlDown(), true);
        }


        // PropertyChangeListener
	public void propertyChange(PropertyChangeEvent event) {
	    String changeName = event.getPropertyName();

	    if ("componentOrientation" == changeName) {
		JTableHeader header = table.getTableHeader();
		if (header != null) {
		    header.setComponentOrientation(
                            (ComponentOrientation)event.getNewValue());
		}
            } else if ("dropLocation" == changeName) {
                JTable.DropLocation oldValue = (JTable.DropLocation)event.getOldValue();
                repaintDropLocation(oldValue);
                repaintDropLocation(table.getDropLocation());
            } else if ("Table.isFileList" == changeName) {
                isFileList = Boolean.TRUE.equals(table.getClientProperty("Table.isFileList"));
                table.revalidate();
                table.repaint();
                if (isFileList) {
                    table.getSelectionModel().addListSelectionListener(getHandler());
                } else {
                    table.getSelectionModel().removeListSelectionListener(getHandler());
                    timer = null;
                }
            } else if ("selectionModel" == changeName) {
                if (isFileList) {
                    ListSelectionModel old = (ListSelectionModel)event.getOldValue();
                    old.removeListSelectionListener(getHandler());
                    table.getSelectionModel().addListSelectionListener(getHandler());
                }
            }
	}

        private void repaintDropLocation(JTable.DropLocation loc) {
            if (loc == null) {
                return;
            }

            if (!loc.isInsertRow() && !loc.isInsertColumn()) {
                Rectangle rect = table.getCellRect(loc.getRow(), loc.getColumn(), false);
                if (rect != null) {
                    table.repaint(rect);
                }
                return;
            }

            if (loc.isInsertRow()) {
                Rectangle rect = extendRect(getHDropLineRect(loc), true);
                if (rect != null) {
                    table.repaint(rect);
                }
            }

            if (loc.isInsertColumn()) {
                Rectangle rect = extendRect(getVDropLineRect(loc), false);
                if (rect != null) {
                    table.repaint(rect);
                }
            }
        }
    }


    /*
     * Returns true if the given point is outside the preferredSize of the
     * item at the given row of the table.  (Column must be 0).
     * Returns false if the "Table.isFileList" client property is not set.
     */
    private boolean pointOutsidePrefSize(int row, int column, Point p) {
        if (!isFileList) {
            return false;
        }
        
        return SwingUtilities2.pointOutsidePrefSize(table, row, column, p);
    }

//
//  Factory methods for the Listeners
//

    private Handler getHandler() {
        if (handler == null) {
            handler = new Handler();
        }
        return handler;
    }

    /**
     * Creates the key listener for handling keyboard navigation in the JTable.
     */
    protected KeyListener createKeyListener() {
	return null;
    }

    /**
     * Creates the focus listener for handling keyboard navigation in the JTable.
     */
    protected FocusListener createFocusListener() {
        return getHandler();
    }

    /**
     * Creates the mouse listener for the JTable.
     */
    protected MouseInputListener createMouseInputListener() {
        return getHandler();
    }

//
//  The installation/uninstall procedures and support
//

    public static ComponentUI createUI(JComponent c) {
        return new BasicTableUI();
    }

//  Installation