Java JTree.getRowForPath方法代碼示例

import javax.swing.JTree; //導入方法依賴的package包/類
/**
 * Store visible offset of an important node. Called when the view is
 * scrolled by ViewRefresher
 *
 * @param path Path to a node that should stay visible at the same position.
 */
private void storeScrollPosition(TreePath path) {
    JTree tree = getJTree();
    if (tree != null && path != null) {
        int row = tree.getRowForPath(path);
        if (row >= 0) {
            int scrollTop = mainScrollPane.getViewport().getViewPosition().y;
            int offset = tree.getRowBounds(row).y - scrollTop;
            visibleTreePosition = new VisibleTreePosition(
                    path, offset);
            return;
        } else {
            return;
        }
    }
    visibleTreePosition = null;
}
 

import javax.swing.JTree; //導入方法依賴的package包/類
/**
 * Restore stored scroll position.
 */
private void restoreScrollPosition(boolean delayScrollWithMarkingDirtyRegion) {
    if (visibleTreePosition != null) {
        JTree tree = getJTree();
        if (tree != null) {
            int row = tree.getRowForPath(visibleTreePosition.getPath());
            if (row != -1) {
                Rectangle bounds = tree.getRowBounds(row);
                if (bounds != null) {
                    int scrollY = bounds.y - visibleTreePosition.getOffset();
                    JViewport viewport = mainScrollPane.getViewport();
                    Rectangle rect = viewport.getViewRect();
                    rect.y = scrollY;
                    if (!rect.isEmpty()) {
                        JComponent view = (JComponent) viewport.getView();
                        if (delayScrollWithMarkingDirtyRegion) {
                            RepaintManager.currentManager(viewport).addDirtyRegion(
                                    view,
                                    rect.x, rect.x, rect.width, rect.height);
                        }
                        ignoreScrollAdjustment = true;
                        try {
                            view.scrollRectToVisible(
                                    rect);
                        } finally {
                            ignoreScrollAdjustment = false;
                        }
                    }
                }
            }
        }
    }
}
 

import javax.swing.JTree; //導入方法依賴的package包/類
public RTree(Component source, JSONOMapConfig omapConfig, Point point, IJSONRecorder recorder) {
    super(source, omapConfig, point, recorder);
    JTree tree = (JTree) source;
    if (point != null) {
        row = tree.getClosestRowForLocation(point.x, point.y);
    } else {
        if (tree.isEditing()) {
            TreePath editingPath = tree.getEditingPath();
            row = tree.getRowForPath(editingPath);
        }
    }
    cellInfo = getTextForNode(tree, row);
}
 

import javax.swing.JTree; //導入方法依賴的package包/類
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; //導入方法依賴的package包/類
private void expandTree(JTree tree) {
    DefaultMutableTreeNode root = (DefaultMutableTreeNode) tree.getModel()
            .getRoot();
    Enumeration e = root.breadthFirstEnumeration();
    while (e.hasMoreElements()) {
        DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
        if (node.isLeaf()) {
            continue;
        }
        int row = tree.getRowForPath(new TreePath(node.getPath()));
        tree.expandRow(row);
    }
}
 

import javax.swing.JTree; //導入方法依賴的package包/類
@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;
}
 

import javax.swing.JTree; //導入方法依賴的package包/類
private void adaptContainerStyle(JTree tree, Object node, boolean selected, boolean expanded, boolean leaf, int row,
		boolean hasFocus, boolean dragging, boolean setForeground) {
	SwingTools.setEnabledRecursive(this, tree.isEnabled());

	Color fg = null;
	Color bg = null;

	boolean highlightingEnabled = RapidMinerGUI.getDragHighlighteMode().equals(DragHighlightMode.FULL);

	JTree.DropLocation dropLocation = tree.getDropLocation();
	if (dropLocation != null && dropLocation.getChildIndex() == -1
			&& tree.getRowForPath(dropLocation.getPath()) == row) {
		fg = TEXT_SELECTED_COLOR;
		bg = SELECTED_COLOR;
	} else if (selected && !dragging) {
		fg = TEXT_SELECTED_COLOR;
		bg = SELECTED_COLOR;
	} else {
		fg = TEXT_NON_SELECTED_COLOR;
		if (highlightingEnabled && dragging) {
			bg = ProcessDrawer.INNER_DRAG_COLOR;
		} else {
			bg = NOT_SELECTED_COLOR;
		}
	}

	if (setForeground) {
		nameLabel.setForeground(fg);
		attributeLabel.setForeground(fg);
	}
	this.setBackground(bg);

	if (hasFocus) {
		this.setBorder(focusBorder);
	} else {
		if (highlightingEnabled && dragging) {
			this.setBorder(draggingNotFocusedBorder);
		} else {
			this.setBorder(nonFocusBorder);
		}
	}
}
 

import javax.swing.JTree; //導入方法依賴的package包/類
/**
  * Configures the renderer based on the passed in components.
  * The value is set from messaging the tree with
  * <code>convertValueToText</code>, which ultimately invokes
  * <code>toString</code> on <code>value</code>.
  * The foreground color is set based on the selection and the icon
  * is set based on the <code>leaf</code> and <code>expanded</code>
  * parameters.
  */
public Component getTreeCellRendererComponent(JTree tree, Object value,
                                              boolean sel,
                                              boolean expanded,
                                              boolean leaf, int row,
                                              boolean hasFocus) {
    String         stringValue = tree.convertValueToText(value, sel,
                                      expanded, leaf, row, hasFocus);

    this.tree = tree;
    this.hasFocus = hasFocus;
    setText(stringValue);

    Color fg = null;
    isDropCell = false;

    JTree.DropLocation dropLocation = tree.getDropLocation();
    if (dropLocation != null
            && dropLocation.getChildIndex() == -1
            && tree.getRowForPath(dropLocation.getPath()) == row) {

        Color col = DefaultLookup.getColor(this, ui, "Tree.dropCellForeground");
        if (col != null) {
            fg = col;
        } else {
            fg = getTextSelectionColor();
        }

        isDropCell = true;
    } else if (sel) {
        fg = getTextSelectionColor();
    } else {
        fg = getTextNonSelectionColor();
    }

    setForeground(fg);

    Icon icon = null;
    if (leaf) {
        icon = getLeafIcon();
    } else if (expanded) {
        icon = getOpenIcon();
    } else {
        icon = getClosedIcon();
    }

    if (!tree.isEnabled()) {
        setEnabled(false);
        LookAndFeel laf = UIManager.getLookAndFeel();
        Icon disabledIcon = laf.getDisabledIcon(tree, icon);
        if (disabledIcon != null) icon = disabledIcon;
        setDisabledIcon(icon);
    } else {
        setEnabled(true);
        setIcon(icon);
    }
    setComponentOrientation(tree.getComponentOrientation());

    selected = sel;

    return this;
}