Java JTree.getSelectionRows方法代码示例

import javax.swing.JTree; //导入方法依赖的package包/类
@Override public void focusLost(RComponent next) {
    JTree tree = (JTree) component;
    String currentText = getText();
    if (currentText != null && !currentText.equals(text)) {
        recorder.recordSelect2(this, currentText, true);
    }
    if ((next == null || next.getComponent() != component) && tree.getSelectionCount() > 1) {
        int[] selectionRows = tree.getSelectionRows();
        if (selectionRows == null) {
            selectionRows = new int[0];
        }
        List<Properties> pa = new ArrayList<Properties>();
        for (int selectionRow : selectionRows) {
            Properties p = new Properties();
            p.put("Path", getTextForNode(tree, selectionRow));
            pa.add(p);
        }
        recorder.recordSelect(this, PropertyHelper.toString(pa.toArray(new Properties[pa.size()]), new String[] { "Path" }));
    }
}
 

import javax.swing.JTree; //导入方法依赖的package包/类
private boolean haveCompleteNode(JTree tree) {
    int[] selRows = tree.getSelectionRows();
    TreePath path = tree.getPathForRow(selRows[0]);
    DefaultMutableTreeNode first =
        (DefaultMutableTreeNode)path.getLastPathComponent();
    int childCount = first.getChildCount();
    // first has children and no children are selected.
    if(childCount > 0 && selRows.length == 1)
        return false;
    // first may have children.
    for(int i = 1; i < selRows.length; i++) {
        path = tree.getPathForRow(selRows[i]);
        DefaultMutableTreeNode next =
            (DefaultMutableTreeNode)path.getLastPathComponent();
        if(first.isNodeChild(next)) {
            // Found a child of first.
            if(childCount > selRows.length-1) {
                // Not all children of first are selected.
                return false;
            }
        }
    }
    return true;
}
 

import javax.swing.JTree; //导入方法依赖的package包/类
private boolean haveCompleteNode(JTree tree) {
    int[] selRows = tree.getSelectionRows();
    TreePath path = tree.getPathForRow(selRows[0]);
    DefaultMutableTreeNode first = (DefaultMutableTreeNode)
            path.getLastPathComponent();
    int childCount = first.getChildCount();
    // first has children and no children are selected.
    if (childCount > 0 && selRows.length == 1) {
        return false;
    }
    // first may have children.
    for (int i = 1; i < selRows.length; i++) {
        path = tree.getPathForRow(selRows[i]);
        DefaultMutableTreeNode next = (DefaultMutableTreeNode)
                path.getLastPathComponent();
        if (first.isNodeChild(next)) {
            // Found a child of first.
            if (childCount > selRows.length - 1) {
                // Not all children of first are selected.
                return false;
            }
        }
    }
    return true;
}
 

import javax.swing.JTree; //导入方法依赖的package包/类
@Override
    public void keyReleased(KeyEvent e) {
        int keyCode = e.getKeyCode();
        if (keyCode == KeyEvent.VK_UP || keyCode == KeyEvent.VK_DOWN) {
            JTree tree = (JTree) e.getSource();
            int row = tree.getSelectionRows()[0];
            TreePath path = tree.getSelectionPath();
            if (path != null) {
                CheckNode node = (CheckNode) path.getLastPathComponent();

                Object o = node.getUserObject();
                if (o instanceof TreeElement) {
                    o = ((TreeElement) o).getUserObject();
                    if (o instanceof RefactoringElement) {
                        openDiff(node);
                    }
//                    else if (o instanceof FileObject) {
//                        tree.expandPath(path);
//                        TreePath pathForRow = tree.getPathForRow(row + 1);
//                        CheckNode lastPathComponent = (CheckNode) pathForRow.getLastPathComponent();
//                        Object userObject = lastPathComponent.getUserObject();
//                        if (userObject instanceof TreeElement) {
//                            Object refElement = ((TreeElement) userObject).getUserObject();
//                            if (refElement instanceof RefactoringElement) {
//                                openDiff(lastPathComponent);
//                            }
//                        }
//                    }
                }
            }
        }
    }
 

import javax.swing.JTree; //导入方法依赖的package包/类
static void selectNextPrev(final boolean next, boolean isQuery, JTree tree) {
    int[] rows = tree.getSelectionRows();
    int newRow = rows == null || rows.length == 0 ? 0 : rows[0];
    int maxcount = tree.getRowCount();
    CheckNode node;
    do {
        if (next) {
            newRow++;
            if (newRow >= maxcount) {
                newRow = 0;
            }
        } else {
            newRow--;
            if (newRow < 0) {
                newRow = maxcount - 1;
            }
        }
        TreePath path = tree.getPathForRow(newRow);
        node = (CheckNode) path.getLastPathComponent();
        if (!node.isLeaf()) {
            tree.expandRow(newRow);
            maxcount = tree.getRowCount();
        }
    } while (!node.isLeaf());
    tree.setSelectionRow(newRow);
    tree.scrollRowToVisible(newRow);
    if (isQuery) {
        CheckNodeListener.findInSource(node);
    } else {
        CheckNodeListener.openDiff(node);
    }
}
 

import javax.swing.JTree; //导入方法依赖的package包/类
static void selectNextPrev(final boolean next, boolean isQuery, JTree tree) {
    int[] rows = tree.getSelectionRows();
    int newRow = rows == null || rows.length == 0 ? 0 : rows[0];
    int maxcount = tree.getRowCount();
    CheckNode node;
    do {
        if (next) {
            newRow++;
            if (newRow >= maxcount) {
                newRow = 0;
            }
        } else {
            newRow--;
            if (newRow < 0) {
                newRow = maxcount - 1;
            }
        }
        TreePath path = tree.getPathForRow(newRow);
        node = (CheckNode) path.getLastPathComponent();
        if (!node.isLeaf()) {
            tree.expandRow(newRow);
            maxcount = tree.getRowCount();
        }
    } while (!node.isLeaf());
    tree.setSelectionRow(newRow);
    tree.scrollRowToVisible(newRow);
}
 

import javax.swing.JTree; //导入方法依赖的package包/类
public boolean canImport(TransferHandler.TransferSupport support) {
    if(!support.isDrop()) {
        return false;
    }
    support.setShowDropLocation(true);
    if(!support.isDataFlavorSupported(nodesFlavor)) {
        return false;
    }
    // Do not allow a drop on the drag source selections.
    JTree.DropLocation dl =
            (JTree.DropLocation)support.getDropLocation();
    JTree tree = (JTree)support.getComponent();
    int dropRow = tree.getRowForPath(dl.getPath());
    int[] selRows = tree.getSelectionRows();
    for(int i = 0; i < selRows.length; i++) {
        if(selRows[i] == dropRow) {
            return false;
        }
    }
    // Do not allow MOVE-action drops if a non-leaf node is
    // selected unless all of its children are also selected.
    int action = support.getDropAction();
    if(action == MOVE) {
        return haveCompleteNode(tree);
    }
    // Do not allow a non-leaf node to be copied to a level
    // which is less than its source level.
    TreePath dest = dl.getPath();
    DefaultMutableTreeNode target =
        (DefaultMutableTreeNode)dest.getLastPathComponent();
    TreePath path = tree.getPathForRow(selRows[0]);
    DefaultMutableTreeNode firstNode =
        (DefaultMutableTreeNode)path.getLastPathComponent();
    if(firstNode.getChildCount() > 0 &&
           target.getLevel() < firstNode.getLevel()) {
        return false;
    }
    return true;
}
 

import javax.swing.JTree; //导入方法依赖的package包/类
@Override
public boolean canImport(TransferHandler.TransferSupport support) {
    if (!support.isDrop()) {
        return false;
    }
    support.setShowDropLocation(true);
    if (!support.isDataFlavorSupported(nodesFlavor)) {
        return false;
    }
    // Do not allow a drop on the drag source selections.
    JTree.DropLocation dl = (JTree.DropLocation) support.getDropLocation();
    JTree tree = (JTree) support.getComponent();
    int dropRow = tree.getRowForPath(dl.getPath());
    int[] selRows = tree.getSelectionRows();
    for (int i = 0; i < selRows.length; i++) {
        if (selRows[i] == dropRow) {
            return false;
        }
    }
    // Do not allow MOVE-action drops if a non-leaf node is
    // selected unless all of its children are also selected.
    int action = support.getDropAction();
    if (action == MOVE) {
        return haveCompleteNode(tree);
    }
    // Do not allow a non-leaf node to be copied to a level
    // which is less than its source level.
    TreePath dest = dl.getPath();
    DefaultMutableTreeNode target = (DefaultMutableTreeNode)
            dest.getLastPathComponent();
    TreePath path = tree.getPathForRow(selRows[0]);
    DefaultMutableTreeNode firstNode = (DefaultMutableTreeNode)
            path.getLastPathComponent();
    if (firstNode.getChildCount() > 0
            && target.getLevel() < firstNode.getLevel()) {
        return false;
    }
    return true;
}