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jlechner |
/* MetalTreeUI.java
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing.plaf.metal;
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import java.awt.Graphics;
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import java.awt.Insets;
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import java.awt.Rectangle;
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import javax.swing.JComponent;
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import javax.swing.JTree;
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import javax.swing.tree.TreePath;
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import javax.swing.plaf.ComponentUI;
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import javax.swing.plaf.basic.BasicTreeUI;
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/**
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* A UI delegate for the {@link JTree} component.
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*/
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public class MetalTreeUI extends BasicTreeUI
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{
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/**
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* Constructs a new instance of <code>MetalTreeUI</code>.
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*/
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public MetalTreeUI()
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{
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super();
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}
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/**
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* Returns a new instance of <code>MetalTreeUI</code>.
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*
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* @param component the component for which we return an UI instance
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*
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* @return A new instance of <code>MetalTreeUI</code>.
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*/
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public static ComponentUI createUI(JComponent component)
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{
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return new MetalTreeUI();
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}
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/**
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* The horizontal element of legs between nodes starts at the right of the
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* left-hand side of the child node by default. This method makes the
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* leg end before that.
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*/
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protected int getHorizontalLegBuffer()
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{
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return super.getHorizontalLegBuffer();
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}
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/**
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* Configures the specified component appropriate for the look and feel.
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* This method is invoked when the ComponentUI instance is being installed
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* as the UI delegate on the specified component. This method should completely
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* configure the component for the look and feel, including the following:
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* 1. Install any default property values for color, fonts, borders, icons,
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* opacity, etc. on the component. Whenever possible, property values
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* initialized by the client program should not be overridden.
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* 2. Install a LayoutManager on the component if necessary.
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* 3. Create/add any required sub-components to the component.
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* 4. Create/install event listeners on the component.
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* 5. Create/install a PropertyChangeListener on the component in order
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* to detect and respond to component property changes appropriately.
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* 6. Install keyboard UI (mnemonics, traversal, etc.) on the component.
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* 7. Initialize any appropriate instance data.
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*/
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public void installUI(JComponent c)
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{
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// TODO: What to do here, if anything?
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super.installUI(c);
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}
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/**
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* Reverses configuration which was done on the specified component during
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* installUI. This method is invoked when this UIComponent instance is being
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* removed as the UI delegate for the specified component. This method should
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* undo the configuration performed in installUI, being careful to leave the
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* JComponent instance in a clean state (no extraneous listeners,
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* look-and-feel-specific property objects, etc.). This should include
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* the following:
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* 1. Remove any UI-set borders from the component.
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* 2. Remove any UI-set layout managers on the component.
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* 3. Remove any UI-added sub-components from the component.
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* 4. Remove any UI-added event/property listeners from the component.
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* 5. Remove any UI-installed keyboard UI from the component.
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* 6. Nullify any allocated instance data objects to allow for GC.
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*/
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public void uninstallUI(JComponent c)
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{
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// TODO: What to do here?
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super.uninstallUI(c);
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}
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/**
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* This function converts between the string passed into the client
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* property and the internal representation (currently an int).
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*
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* @param lineStyleFlag - String representation
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*/
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protected void decodeLineStyle(Object lineStyleFlag)
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{
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// FIXME: not implemented
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}
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/**
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* Checks if the location is in expand control.
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*
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* @param row - current row
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* @param rowLevel - current level
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* @param mouseX - current x location of the mouse click
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* @param mouseY - current y location of the mouse click
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*/
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protected boolean isLocationInExpandControl(int row, int rowLevel,
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int mouseX, int mouseY)
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{
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return super.isLocationInExpandControl(tree.getPathForRow(row),
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mouseX, mouseY);
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}
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/**
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* Paints the specified component appropriate for the look and feel.
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* This method is invoked from the ComponentUI.update method when the
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* specified component is being painted. Subclasses should override this
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* method and use the specified Graphics object to render the content of
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* the component.
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*
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* @param g - the current graphics configuration.
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* @param c - the current component to draw
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*/
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public void paint(Graphics g, JComponent c)
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{
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// Calls BasicTreeUI's paint since it takes care of painting all
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// types of icons.
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super.paint(g, c);
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}
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/**
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* Paints the horizontal separators.
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*
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* @param g - the current graphics configuration.
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* @param c - the current component to draw
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*/
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protected void paintHorizontalSeparators(Graphics g, JComponent c)
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{
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// FIXME: not implemented
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}
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/**
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* Paints the vertical part of the leg. The receiver should NOT modify
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* clipBounds, insets.
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*
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* @param g - the current graphics configuration.
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* @param clipBounds -
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* @param insets -
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* @param path - the current path
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*/
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protected void paintVerticalPartOfLeg(Graphics g, Rectangle clipBounds,
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Insets insets, TreePath path)
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{
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super.paintVerticalPartOfLeg(g, clipBounds, insets, path);
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}
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/**
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* Paints the horizontal part of the leg. The receiver should NOT \
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* modify clipBounds, or insets.
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* NOTE: parentRow can be -1 if the root is not visible.
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*/
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protected void paintHorizontalPartOfLeg(Graphics g, Rectangle clipBounds,
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Insets insets, Rectangle bounds,
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TreePath path, int row,
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boolean isExpanded, boolean hasBeenExpanded,
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boolean isLeaf)
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{
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super.paintHorizontalPartOfLeg(g, clipBounds, insets, bounds, path, row,
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isExpanded, hasBeenExpanded, isLeaf);
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}
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}
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