Fabriquer un composant

Bonjour,

Je souhaite fabriquer un slider comprenant deux boutons de slide (et d'autres particularités qui me manquent).

Après plusieurs essais infructeux et vu la complexité d'un composant (voir par exemple le code d'un JSlider ici) je me suis dit qu'il serait plus pratique de reprendre le JSlider existant et de le retoucher en ajoutant des méthodes qui combleraient mon besoin.

Mon problème est qu'en faisant cela, je me heurte à deux méthodes de la classe JComponent qui sont "static" (vous pouvez les voir dans le code ci-dessous aux lignes 1341 et 1342). Du coup, impossible pour moi de faire appel à ces méthodes.
Pour pouvoir appeler ces deux méthodes, il faudrait que ma classe soit dans le package swing ....
Est-ce possible pour moi d'intégrer ma fonction dans le package swing ?

Quelqu'un aurait-il une solution pour moi ? J'implémenterai bien la classe JSlider mais cela ne me suffira pas pour ajouter un bouton à un slider.

Merci !!! :aie:

Code:

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package com.symphonic.view.components;     /*  * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved.  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.  *  * This code is free software; you can redistribute it and/or modify it  * under the terms of the GNU General Public License version 2 only, as  * published by the Free Software Foundation. Sun designates this  * particular file as subject to the "Classpath" exception as provided  * by Sun in the LICENSE file that accompanied this code.  *  * This code is distributed in the hope that it will be useful, but WITHOUT  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License  * version 2 for more details (a copy is included in the LICENSE file that  * accompanied this code).  *  * You should have received a copy of the GNU General Public License version  * 2 along with this work; if not, write to the Free Software Foundation,  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.  *  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,  * CA 95054 USA or visit www.sun.com if you need additional information or  * have any questions.  */     import javax.swing.BoundedRangeModel; import javax.swing.DefaultBoundedRangeModel; import javax.swing.JComponent; import javax.swing.JLabel; import javax.swing.SwingConstants; import javax.swing.UIManager; import javax.swing.border.*; import javax.swing.event.*; import javax.swing.plaf.*; import javax.accessibility.*;   import java.io.Serializable; import java.io.ObjectOutputStream; import java.io.ObjectInputStream; import java.io.IOException; import java.awt.Color; import java.awt.Font; import java.util.*; import java.beans.*;     /**  * A component that lets the user graphically select a value by sliding  * a knob within a bounded interval.  * <p>  * The slider can show both  * major tick marks, and minor tick marks between the major ones.  The number of  * values between the tick marks is controlled with  * <code>setMajorTickSpacing</code> and <code>setMinorTickSpacing</code>.  * Painting of tick marks is controlled by {@code setPaintTicks}.  * <p>  * Sliders can also print text labels at regular intervals (or at  * arbitrary locations) along the slider track.  Painting of labels is  * controlled by {@code setLabelTable} and {@code setPaintLabels}.  * <p>  * For further information and examples see  * <a href="http://java.sun.com/docs/books/tutorial/uiswing/components/slider.html">How to Use Sliders</a>,  * a section in <em>The Java Tutorial.</em>  * <p>  * <strong>Warning:</strong> Swing is not thread safe. For more  * information see <a * href="package-summary.html#threading">Swing's Threading  * Policy</a>.  * <p>  * <strong>Warning:</strong>  * Serialized objects of this class will not be compatible with  * future Swing releases. The current serialization support is  * appropriate for short term storage or RMI between applications running  * the same version of Swing.  As of 1.4, support for long term storage  * of all JavaBeans<sup><font size="-2">TM</font></sup>  * has been added to the <code>java.beans</code> package.  * Please see {@link java.beans.XMLEncoder}.  *  * @beaninfo  *      attribute: isContainer false  *    description: A component that supports selecting a integer value from a range.  *  * @author David Kloba  */ public class MySlide extends JComponent implements SwingConstants, Accessible { /**      * @see #getUIClassID      * @see #readObject      */ private static final String uiClassID = "SliderUI";   private boolean paintTicks = false; private boolean paintTrack = true; private boolean paintLabels = false; private boolean isInverted = false;   /**      * The data model that handles the numeric maximum value,      * minimum value, and current-position value for the slider.      */ protected BoundedRangeModel sliderModel;   /**      * The number of values between the major tick marks -- the      * larger marks that break up the minor tick marks.      */ protected int majorTickSpacing;   /**      * The number of values between the minor tick marks -- the      * smaller marks that occur between the major tick marks.      * @see #setMinorTickSpacing      */ protected int minorTickSpacing;   /**      * If true, the knob (and the data value it represents)      * resolve to the closest tick mark next to where the user      * positioned the knob.  The default is false.      * @see #setSnapToTicks      */ protected boolean snapToTicks = false;   /**      * If true, the knob (and the data value it represents)      * resolve to the closest slider value next to where the user      * positioned the knob.      */ boolean snapToValue = true;   /**      * Whether the slider is horizontal or vertical      * The default is horizontal.      *      * @see #setOrientation      */ protected int orientation;     /**      * {@code Dictionary} of what labels to draw at which values      */ private Dictionary labelTable;     /**      * The changeListener (no suffix) is the listener we add to the      * slider's model.  This listener is initialized to the      * {@code ChangeListener} returned from {@code createChangeListener},      * which by default just forwards events      * to {@code ChangeListener}s (if any) added directly to the slider.      *      * @see #addChangeListener      * @see #createChangeListener      */ protected ChangeListener changeListener = createChangeListener();     /**      * Only one <code>ChangeEvent</code> is needed per slider instance since the      * event's only (read-only) state is the source property.  The source      * of events generated here is always "this". The event is lazily      * created the first time that an event notification is fired.      *      * @see #fireStateChanged      */ protected transient ChangeEvent changeEvent = null;     private void checkOrientation(int orientation) { switch (orientation) { case VERTICAL: case HORIZONTAL: break; default: throw new IllegalArgumentException("orientation must be one of: VERTICAL, HORIZONTAL"); } }     /**      * Creates a horizontal slider with the range 0 to 100 and      * an initial value of 50.      */ public MySlide() { this(HORIZONTAL, 0, 100, 50); }     /**      * Creates a slider using the specified orientation with the      * range {@code 0} to {@code 100} and an initial value of {@code 50}.      * The orientation can be      * either <code>SwingConstants.VERTICAL</code> or      * <code>SwingConstants.HORIZONTAL</code>.      *      * @param  orientation  the orientation of the slider      * @throws IllegalArgumentException if orientation is not one of {@code VERTICAL}, {@code HORIZONTAL}      * @see #setOrientation      */ public MySlide(int orientation) { this(orientation, 0, 100, 50); }     /**      * Creates a horizontal slider using the specified min and max      * with an initial value equal to the average of the min plus max.      * <p>      * The <code>BoundedRangeModel</code> that holds the slider's data      * handles any issues that may arise from improperly setting the      * minimum and maximum values on the slider.  See the      * {@code BoundedRangeModel} documentation for details.      *      * @param min  the minimum value of the slider      * @param max  the maximum value of the slider      *      * @see BoundedRangeModel      * @see #setMinimum      * @see #setMaximum      */ public MySlide(int min, int max) { this(HORIZONTAL, min, max, (min + max) / 2); }     /**      * Creates a horizontal slider using the specified min, max and value.      * <p>      * The <code>BoundedRangeModel</code> that holds the slider's data      * handles any issues that may arise from improperly setting the      * minimum, initial, and maximum values on the slider.  See the      * {@code BoundedRangeModel} documentation for details.      *      * @param min  the minimum value of the slider      * @param max  the maximum value of the slider      * @param value  the initial value of the slider      *      * @see BoundedRangeModel      * @see #setMinimum      * @see #setMaximum      * @see #setValue      */ public MySlide(int min, int max, int value) { this(HORIZONTAL, min, max, value); }     /**      * Creates a slider with the specified orientation and the      * specified minimum, maximum, and initial values.      * The orientation can be      * either <code>SwingConstants.VERTICAL</code> or      * <code>SwingConstants.HORIZONTAL</code>.      * <p>      * The <code>BoundedRangeModel</code> that holds the slider's data      * handles any issues that may arise from improperly setting the      * minimum, initial, and maximum values on the slider.  See the      * {@code BoundedRangeModel} documentation for details.      *      * @param orientation  the orientation of the slider      * @param min  the minimum value of the slider      * @param max  the maximum value of the slider      * @param value  the initial value of the slider      *      * @throws IllegalArgumentException if orientation is not one of {@code VERTICAL}, {@code HORIZONTAL}      *      * @see BoundedRangeModel      * @see #setOrientation      * @see #setMinimum      * @see #setMaximum      * @see #setValue      */ public MySlide(int orientation, int min, int max, int value) { checkOrientation(orientation); this.orientation = orientation; sliderModel = new DefaultBoundedRangeModel(value, 0, min, max); sliderModel.addChangeListener(changeListener); updateUI(); }     /**      * Creates a horizontal slider using the specified      * BoundedRangeModel.      */ public MySlide(BoundedRangeModel brm) { this.orientation = MySlide.HORIZONTAL; setModel(brm); sliderModel.addChangeListener(changeListener); updateUI(); }     /**      * Gets the UI object which implements the L&F for this component.      *      * @return the SliderUI object that implements the Slider L&F      */ public SliderUI getUI() { return(SliderUI)ui; }     /**      * Sets the UI object which implements the L&F for this component.      *      * @param ui the SliderUI L&F object      * @see UIDefaults#getUI      * @beaninfo      *        bound: true      *       hidden: true      *    attribute: visualUpdate true      *  description: The UI object that implements the slider's LookAndFeel.      */ public void setUI(SliderUI ui) { super.setUI(ui); }     /**      * Resets the UI property to a value from the current look and feel.      *      * @see JComponent#updateUI      */ public void updateUI() { setUI((SliderUI)UIManager.getUI(this)); // The labels preferred size may be derived from the font // of the slider, so we must update the UI of the slider first, then // that of labels. This way when setSize is called the right // font is used. updateLabelUIs(); }     /**      * Returns the name of the L&F class that renders this component.      *      * @return "SliderUI"      * @see JComponent#getUIClassID      * @see UIDefaults#getUI      */ public String getUIClassID() { return uiClassID; }     /**      * We pass Change events along to the listeners with the      * the slider (instead of the model itself) as the event source.      */ private class ModelListener implements ChangeListener, Serializable { public void stateChanged(ChangeEvent e) { fireStateChanged(); } }     /**      * Subclasses that want to handle {@code ChangeEvent}s      * from the model differently      * can override this to return      * an instance of a custom <code>ChangeListener</code> implementation.      * The default {@code ChangeListener} simply calls the      * {@code fireStateChanged} method to forward {@code ChangeEvent}s      * to the {@code ChangeListener}s that have been added directly to the      * slider.      * @see #changeListener      * @see #fireStateChanged      * @see javax.swing.event.ChangeListener      * @see javax.swing.BoundedRangeModel      */ protected ChangeListener createChangeListener() { return new ModelListener(); }     /**      * Adds a ChangeListener to the slider.      *      * @param l the ChangeListener to add      * @see #fireStateChanged      * @see #removeChangeListener      */ public void addChangeListener(ChangeListener l) { listenerList.add(ChangeListener.class, l); }     /**      * Removes a ChangeListener from the slider.      *      * @param l the ChangeListener to remove      * @see #fireStateChanged      * @see #addChangeListener        */ public void removeChangeListener(ChangeListener l) { listenerList.remove(ChangeListener.class, l); }     /**      * Returns an array of all the <code>ChangeListener</code>s added      * to this JSlider with addChangeListener().      *      * @return all of the <code>ChangeListener</code>s added or an empty      *         array if no listeners have been added      * @since 1.4      */ public ChangeListener[] getChangeListeners() { return (ChangeListener[])listenerList.getListeners( ChangeListener.class); }     /**      * Send a {@code ChangeEvent}, whose source is this {@code JSlider}, to      * all {@code ChangeListener}s that have registered interest in      * {@code ChangeEvent}s.      * This method is called each time a {@code ChangeEvent} is received from      * the model.      * <p>      * The event instance is created if necessary, and stored in      * {@code changeEvent}.      *      * @see #addChangeListener      * @see EventListenerList      */ protected void fireStateChanged() { Object[] listeners = listenerList.getListenerList(); for (int i = listeners.length - 2; i >= 0; i -= 2) { if (listeners[i]==ChangeListener.class) { if (changeEvent == null) { changeEvent = new ChangeEvent(this); } ((ChangeListener)listeners[i+1]).stateChanged(changeEvent); } } }     /**      * Returns the {@code BoundedRangeModel} that handles the slider's three      * fundamental properties: minimum, maximum, value.      *      * @return the data model for this component      * @see #setModel      * @see    BoundedRangeModel      */ public BoundedRangeModel getModel() { return sliderModel; }     /**      * Sets the {@code BoundedRangeModel} that handles the slider's three      * fundamental properties: minimum, maximum, value.      *<p>      * Attempts to pass a {@code null} model to this method result in      * undefined behavior, and, most likely, exceptions.      *      * @param  newModel the new, {@code non-null} <code>BoundedRangeModel</code> to use      *      * @see #getModel      * @see    BoundedRangeModel      * @beaninfo      *       bound: true      * description: The sliders BoundedRangeModel.      */ public void setModel(BoundedRangeModel newModel) { BoundedRangeModel oldModel = getModel();   if (oldModel != null) { oldModel.removeChangeListener(changeListener); }   sliderModel = newModel;   if (newModel != null) { newModel.addChangeListener(changeListener);   if (accessibleContext != null) { accessibleContext.firePropertyChange( AccessibleContext.ACCESSIBLE_VALUE_PROPERTY, (oldModel == null ? null : new Integer(oldModel.getValue())), (newModel == null ? null : new Integer(newModel.getValue()))); } }   firePropertyChange("model", oldModel, sliderModel); }     /**      * Returns the slider's current value      * from the {@code BoundedRangeModel}.      *      * @return  the current value of the slider      * @see     #setValue      * @see     BoundedRangeModel#getValue      */ public int getValue() { return getModel().getValue(); }   /**      * Sets the slider's current value to {@code n}.  This method      * forwards the new value to the model.      * <p>      * The data model (an instance of {@code BoundedRangeModel})      * handles any mathematical      * issues arising from assigning faulty values.  See the      * {@code BoundedRangeModel} documentation for details.      * <p>      * If the new value is different from the previous value,      * all change listeners are notified.      *      * @param   n       the new value      * @see     #getValue      * @see     #addChangeListener      * @see     BoundedRangeModel#setValue      * @beaninfo      *   preferred: true      * description: The sliders current value.      */ public void setValue(int n) { BoundedRangeModel m = getModel(); int oldValue = m.getValue(); if (oldValue == n) { return; } m.setValue(n);   if (accessibleContext != null) { accessibleContext.firePropertyChange( AccessibleContext.ACCESSIBLE_VALUE_PROPERTY, new Integer(oldValue), new Integer(m.getValue())); } }     /**      * Returns the minimum value supported by the slider      * from the <code>BoundedRangeModel</code>.      *      * @return the value of the model's minimum property      * @see #setMinimum      * @see     BoundedRangeModel#getMinimum      */ public int getMinimum() { return getModel().getMinimum(); }     /**      * Sets the slider's minimum value to {@code minimum}.  This method      * forwards the new minimum value to the model.      * <p>      * The data model (an instance of {@code BoundedRangeModel})      * handles any mathematical      * issues arising from assigning faulty values.  See the      * {@code BoundedRangeModel} documentation for details.      * <p>      * If the new minimum value is different from the previous minimum value,      * all change listeners are notified.      *      * @param minimum  the new minimum      * @see #getMinimum      * @see    #addChangeListener      * @see BoundedRangeModel#setMinimum      * @beaninfo      *       bound: true      *   preferred: true      * description: The sliders minimum value.      */ public void setMinimum(int minimum) { int oldMin = getModel().getMinimum(); getModel().setMinimum(minimum); firePropertyChange( "minimum", new Integer( oldMin ), new Integer( minimum ) ); }     /**      * Returns the maximum value supported by the slider      * from the <code>BoundedRangeModel</code>.      *      * @return the value of the model's maximum property      * @see #setMaximum      * @see BoundedRangeModel#getMaximum      */ public int getMaximum() { return getModel().getMaximum(); }     /**      * Sets the slider's maximum value to {@code maximum}.  This method      * forwards the new maximum value to the model.      * <p>      * The data model (an instance of {@code BoundedRangeModel})      * handles any mathematical      * issues arising from assigning faulty values.  See the      * {@code BoundedRangeModel} documentation for details.      * <p>      * If the new maximum value is different from the previous maximum value,      * all change listeners are notified.      *      * @param maximum  the new maximum      * @see #getMaximum      * @see #addChangeListener      * @see BoundedRangeModel#setMaximum      * @beaninfo      *       bound: true      *   preferred: true      * description: The sliders maximum value.      */ public void setMaximum(int maximum) { int oldMax = getModel().getMaximum(); getModel().setMaximum(maximum); firePropertyChange( "maximum", new Integer( oldMax ), new Integer( maximum ) ); }     /**      * Returns the {@code valueIsAdjusting} property from the model.  For      * details on how this is used, see the {@code setValueIsAdjusting}      * documentation.      *      * @return the value of the model's {@code valueIsAdjusting} property      * @see #setValueIsAdjusting      */ public boolean getValueIsAdjusting() { return getModel().getValueIsAdjusting(); }     /**      * Sets the model's {@code valueIsAdjusting} property.  Slider look and      * feel implementations should set this property to {@code true} when      * a knob drag begins, and to {@code false} when the drag ends.  The      * slider model will not generate {@code ChangeEvent}s while      * {@code valueIsAdjusting} is {@code true}.      *      * @param b the new value for the {@code valueIsAdjusting} property      * @see   #getValueIsAdjusting      * @see   BoundedRangeModel#setValueIsAdjusting      * @beaninfo      *      expert: true      * description: True if the slider knob is being dragged.      */ public void setValueIsAdjusting(boolean b) { BoundedRangeModel m = getModel(); boolean oldValue = m.getValueIsAdjusting(); m.setValueIsAdjusting(b);   if ((oldValue != b) && (accessibleContext != null)) { accessibleContext.firePropertyChange( AccessibleContext.ACCESSIBLE_STATE_PROPERTY, ((oldValue) ? AccessibleState.BUSY : null), ((b) ? AccessibleState.BUSY : null)); } }     /**      * Returns the "extent" from the <code>BoundedRangeModel</code>.      * This respresents the range of values "covered" by the knob.      *      * @return an int representing the extent      * @see #setExtent      * @see BoundedRangeModel#getExtent      */ public int getExtent() { return getModel().getExtent(); }     /**      * Sets the size of the range "covered" by the knob.  Most look      * and feel implementations will change the value by this amount      * if the user clicks on either side of the knob.  This method just      * forwards the new extent value to the model.      * <p>      * The data model (an instance of {@code BoundedRangeModel})      * handles any mathematical      * issues arising from assigning faulty values.  See the      * {@code BoundedRangeModel} documentation for details.      * <p>      * If the new extent value is different from the previous extent value,      * all change listeners are notified.      *      * @param extent the new extent      * @see   #getExtent      * @see   BoundedRangeModel#setExtent      * @beaninfo      *      expert: true      * description: Size of the range covered by the knob.      */ public void setExtent(int extent) { getModel().setExtent(extent); }     /**      * Return this slider's vertical or horizontal orientation.      * @return {@code SwingConstants.VERTICAL} or      *  {@code SwingConstants.HORIZONTAL}      * @see #setOrientation      */ public int getOrientation() { return orientation; }     /**      * Set the slider's orientation to either {@code SwingConstants.VERTICAL} or      * {@code SwingConstants.HORIZONTAL}.      *      * @param orientation {@code HORIZONTAL} or {@code VERTICAL}      * @throws IllegalArgumentException if orientation is not one of {@code VERTICAL}, {@code HORIZONTAL}      * @see #getOrientation      * @beaninfo      *    preferred: true      *        bound: true      *    attribute: visualUpdate true      *  description: Set the scrollbars orientation to either VERTICAL or HORIZONTAL.      *         enum: VERTICAL JSlider.VERTICAL      *               HORIZONTAL JSlider.HORIZONTAL      *      */ public void setOrientation(int orientation) { checkOrientation(orientation); int oldValue = this.orientation; this.orientation = orientation; firePropertyChange("orientation", oldValue, orientation);   if ((oldValue != orientation) && (accessibleContext != null)) { accessibleContext.firePropertyChange( AccessibleContext.ACCESSIBLE_STATE_PROPERTY, ((oldValue == VERTICAL) ? AccessibleState.VERTICAL : AccessibleState.HORIZONTAL), ((orientation == VERTICAL) ? AccessibleState.VERTICAL : AccessibleState.HORIZONTAL)); } if (orientation != oldValue) { revalidate(); } }     /**      * {@inheritDoc}      *      * @since 1.6      */ public void setFont(Font font) { super.setFont(font); updateLabelSizes(); }     /**      * Returns the dictionary of what labels to draw at which values.      *      * @return the <code>Dictionary</code> containing labels and      *    where to draw them      */ public Dictionary getLabelTable() { /*   if ( labelTable == null && getMajorTickSpacing() > 0 ) {   setLabelTable( createStandardLabels( getMajorTickSpacing() ) );   } */ return labelTable; }     /**      * Used to specify what label will be drawn at any given value.      * The key-value pairs are of this format:      * <code>{ Integer value, java.swing.JComponent label }</code>.      * <p>      * An easy way to generate a standard table of value labels is by using the      * {@code createStandardLabels} method.      * <p>      * Once the labels have been set, this method calls {@link #updateLabelUIs}.      * Note that the labels are only painted if the {@code paintLabels}      * property is {@code true}.      *      * @param labels new {@code Dictionary} of labels, or {@code null} to      *        remove all labels      * @see #createStandardLabels(int)      * @see #getLabelTable      * @see #setPaintLabels      * @beaninfo      *       hidden: true      *        bound: true      *    attribute: visualUpdate true      *  description: Specifies what labels will be drawn for any given value.      */ public void setLabelTable( Dictionary labels ) { Dictionary oldTable = labelTable; labelTable = labels; updateLabelUIs(); firePropertyChange("labelTable", oldTable, labelTable ); if (labels != oldTable) { revalidate(); repaint(); } }     /**      * Updates the UIs for the labels in the label table by calling      * {@code updateUI} on each label.  The UIs are updated from      * the current look and feel.  The labels are also set to their      * preferred size.      *      * @see #setLabelTable      * @see JComponent#updateUI      */ protected void updateLabelUIs() { if ( getLabelTable() == null ) { return; } Enumeration labels = getLabelTable().keys(); while ( labels.hasMoreElements() ) { Object value = getLabelTable().get( labels.nextElement() ); if ( value instanceof JComponent ) { JComponent component = (JComponent)value; component.updateUI(); component.setSize( component.getPreferredSize() ); } } }   private void updateLabelSizes() { Dictionary labelTable = getLabelTable(); if (labelTable != null) { Enumeration labels = labelTable.elements(); while (labels.hasMoreElements()) { Object value = labels.nextElement(); if (value instanceof JComponent) { JComponent component = (JComponent)value; component.setSize(component.getPreferredSize()); } } } }     /**      * Creates a {@code Hashtable} of numerical text labels, starting at the      * slider minimum, and using the increment specified.      * For example, if you call <code>createStandardLabels( 10 )</code>      * and the slider minimum is zero,      * then labels will be created for the values 0, 10, 20, 30, and so on.      * <p>      * For the labels to be drawn on the slider, the returned {@code Hashtable}      * must be passed into {@code setLabelTable}, and {@code setPaintLabels}      * must be set to {@code true}.      * <p>      * For further details on the makeup of the returned {@code Hashtable}, see      * the {@code setLabelTable} documentation.      *      * @param  increment  distance between labels in the generated hashtable      * @return a new {@code Hashtable} of labels      * @see #setLabelTable      * @see #setPaintLabels      * @throws IllegalArgumentException if {@code increment} is less than or      *          equal to zero      */ public Hashtable createStandardLabels( int increment ) { return createStandardLabels( increment, getMinimum() ); }     /**      * Creates a {@code Hashtable} of numerical text labels, starting at the      * starting point specified, and using the increment specified.      * For example, if you call      * <code>createStandardLabels( 10, 2 )</code>,      * then labels will be created for the values 2, 12, 22, 32, and so on.      * <p>      * For the labels to be drawn on the slider, the returned {@code Hashtable}      * must be passed into {@code setLabelTable}, and {@code setPaintLabels}      * must be set to {@code true}.      * <p>      * For further details on the makeup of the returned {@code Hashtable}, see      * the {@code setLabelTable} documentation.      *      * @param  increment  distance between labels in the generated hashtable      * @param  start      value at which the labels will begin      * @return a new {@code Hashtable} of labels      * @see #setLabelTable      * @see #setPaintLabels      * @exception IllegalArgumentException if {@code start} is      *          out of range, or if {@code increment} is less than or equal      *          to zero      */ public Hashtable createStandardLabels( int increment, int start ) { if ( start > getMaximum() || start < getMinimum() ) { throw new IllegalArgumentException( "Slider label start point out of range." ); }   if ( increment <= 0 ) { throw new IllegalArgumentException( "Label incremement must be > 0" ); }   class SmartHashtable extends Hashtable implements PropertyChangeListener { int increment = 0; int start = 0; boolean startAtMin = false;   class LabelUIResource extends JLabel implements UIResource { public LabelUIResource( String text, int alignment ) { super( text, alignment ); setName("Slider.label"); }   public Font getFont() { Font font = super.getFont(); if (font != null && !(font instanceof UIResource)) { return font; } return MySlide.this.getFont(); }   public Color getForeground() { Color fg = super.getForeground(); if (fg != null && !(fg instanceof UIResource)) { return fg; } if (!(MySlide.this.getForeground() instanceof UIResource)) { return MySlide.this.getForeground(); } return fg; } }   public SmartHashtable( int increment, int start ) { super(); this.increment = increment; this.start = start; startAtMin = start == getMinimum(); createLabels(); }   public void propertyChange( PropertyChangeEvent e ) { if ( e.getPropertyName().equals( "minimum" ) && startAtMin ) { start = getMinimum(); }   if ( e.getPropertyName().equals( "minimum" ) || e.getPropertyName().equals( "maximum" ) ) {   Enumeration keys = getLabelTable().keys(); Object key = null; Hashtable hashtable = new Hashtable();   // Save the labels that were added by the developer while ( keys.hasMoreElements() ) { key = keys.nextElement(); Object value = getLabelTable().get( key ); if ( !(value instanceof LabelUIResource) ) { hashtable.put( key, value ); } }   clear(); createLabels();   // Add the saved labels keys = hashtable.keys(); while ( keys.hasMoreElements() ) { key = keys.nextElement(); put( key, hashtable.get( key ) ); }   ((MySlide)e.getSource()).setLabelTable( this ); } }   void createLabels() { for ( int labelIndex = start; labelIndex <= getMaximum(); labelIndex += increment ) { put( new Integer( labelIndex ), new LabelUIResource( ""+labelIndex, JLabel.CENTER ) ); } } }   SmartHashtable table = new SmartHashtable( increment, start );   if ( getLabelTable() != null && (getLabelTable() instanceof PropertyChangeListener) ) { removePropertyChangeListener( (PropertyChangeListener)getLabelTable() ); }   addPropertyChangeListener( table );   return table; }     /**      * Returns true if the value-range shown for the slider is reversed,      *      * @return true if the slider values are reversed from their normal order      * @see #setInverted      */ public boolean getInverted() { return isInverted; }     /**      * Specify true to reverse the value-range shown for the slider and false to      * put the value range in the normal order.  The order depends on the      * slider's <code>ComponentOrientation</code> property.  Normal (non-inverted)      * horizontal sliders with a <code>ComponentOrientation</code> value of      * <code>LEFT_TO_RIGHT</code> have their maximum on the right.      * Normal horizontal sliders with a <code>ComponentOrientation</code> value of      * <code>RIGHT_TO_LEFT</code> have their maximum on the left.  Normal vertical      * sliders have their maximum on the top.  These labels are reversed when the      * slider is inverted.      * <p>      * By default, the value of this property is {@code false}.      *      * @param b  true to reverse the slider values from their normal order      * @beaninfo      *        bound: true      *    attribute: visualUpdate true      *  description: If true reverses the slider values from their normal order      *      */ public void setInverted( boolean b ) { boolean oldValue = isInverted; isInverted = b; firePropertyChange("inverted", oldValue, isInverted); if (b != oldValue) { repaint(); } }     /**      * This method returns the major tick spacing.  The number that is returned      * represents the distance, measured in values, between each major tick mark.      * If you have a slider with a range from 0 to 50 and the major tick spacing      * is set to 10, you will get major ticks next to the following values:      * 0, 10, 20, 30, 40, 50.      *      * @return the number of values between major ticks      * @see #setMajorTickSpacing      */ public int getMajorTickSpacing() { return majorTickSpacing; }     /**      * This method sets the major tick spacing.  The number that is passed in      * represents the distance, measured in values, between each major tick mark.      * If you have a slider with a range from 0 to 50 and the major tick spacing      * is set to 10, you will get major ticks next to the following values:      * 0, 10, 20, 30, 40, 50.      * <p>      * In order for major ticks to be painted, {@code setPaintTicks} must be      * set to {@code true}.      * <p>      * This method will also set up a label table for you.      * If there is not already a label table, and the major tick spacing is      * {@code > 0}, and {@code getPaintLabels} returns      * {@code true}, a standard label table will be generated (by calling      * {@code createStandardLabels}) with labels at the major tick marks.      * For the example above, you would get text labels: "0",      * "10", "20", "30", "40", "50".      * The label table is then set on the slider by calling      * {@code setLabelTable}.      *      * @param  n  new value for the {@code majorTickSpacing} property      * @see #getMajorTickSpacing      * @see #setPaintTicks      * @see #setLabelTable      * @see #createStandardLabels(int)      * @beaninfo      *        bound: true      *    attribute: visualUpdate true      *  description: Sets the number of values between major tick marks.      *      */ public void setMajorTickSpacing(int n) { int oldValue = majorTickSpacing; majorTickSpacing = n; if ( labelTable == null && getMajorTickSpacing() > 0 && getPaintLabels() ) { setLabelTable( createStandardLabels( getMajorTickSpacing() ) ); } firePropertyChange("majorTickSpacing", oldValue, majorTickSpacing); if (majorTickSpacing != oldValue && getPaintTicks()) { repaint(); } }       /**      * This method returns the minor tick spacing.  The number that is returned      * represents the distance, measured in values, between each minor tick mark.      * If you have a slider with a range from 0 to 50 and the minor tick spacing      * is set to 10, you will get minor ticks next to the following values:      * 0, 10, 20, 30, 40, 50.      *      * @return the number of values between minor ticks      * @see #getMinorTickSpacing      */ public int getMinorTickSpacing() { return minorTickSpacing; }     /**      * This method sets the minor tick spacing.  The number that is passed in      * represents the distance, measured in values, between each minor tick mark.      * If you have a slider with a range from 0 to 50 and the minor tick spacing      * is set to 10, you will get minor ticks next to the following values:      * 0, 10, 20, 30, 40, 50.      * <p>      * In order for minor ticks to be painted, {@code setPaintTicks} must be      * set to {@code true}.      *      * @param  n  new value for the {@code minorTickSpacing} property      * @see #getMinorTickSpacing      * @see #setPaintTicks      * @beaninfo      *        bound: true      *    attribute: visualUpdate true      *  description: Sets the number of values between minor tick marks.      */ public void setMinorTickSpacing(int n) { int oldValue = minorTickSpacing; minorTickSpacing = n; firePropertyChange("minorTickSpacing", oldValue, minorTickSpacing); if (minorTickSpacing != oldValue && getPaintTicks()) { repaint(); } }     /**      * Returns true if the knob (and the data value it represents)      * resolve to the closest tick mark next to where the user      * positioned the knob.      *      * @return true if the value snaps to the nearest tick mark, else false      * @see #setSnapToTicks      */ public boolean getSnapToTicks() { return snapToTicks; }     /**      * Returns true if the knob (and the data value it represents)      * resolve to the closest slider value next to where the user      * positioned the knob.      *      * @return true if the value snaps to the nearest slider value, else false      * @see #setSnapToValue      */ boolean getSnapToValue() { return snapToValue; }     /**      * Specifying true makes the knob (and the data value it represents)      * resolve to the closest tick mark next to where the user      * positioned the knob.      * By default, this property is {@code false}.      *      * @param b  true to snap the knob to the nearest tick mark      * @see #getSnapToTicks      * @beaninfo      *       bound: true      * description: If true snap the knob to the nearest tick mark.      */ public void setSnapToTicks(boolean b) { boolean oldValue = snapToTicks; snapToTicks = b; firePropertyChange("snapToTicks", oldValue, snapToTicks); }     /**      * Specifying true makes the knob (and the data value it represents)      * resolve to the closest slider value next to where the user      * positioned the knob. If the {@code snapToTicks} property has also been      * set to {@code true}, the snap-to-ticks behavior will prevail.      * By default, the snapToValue property is {@code true}.      *      * @param b  true to snap the knob to the nearest slider value      * @see #getSnapToValue      * @see #setSnapToTicks      * @beaninfo      *       bound: true      * description: If true snap the knob to the nearest slider value.      */ void setSnapToValue(boolean b) { boolean oldValue = snapToValue; snapToValue = b; firePropertyChange("snapToValue", oldValue, snapToValue); }     /**      * Tells if tick marks are to be painted.      * @return true if tick marks are painted, else false      * @see #setPaintTicks      */ public boolean getPaintTicks() { return paintTicks; }     /**      * Determines whether tick marks are painted on the slider.      * By default, this property is {@code false}.      *      * @param  b  whether or not tick marks should be painted      * @see #getPaintTicks      * @beaninfo      *        bound: true      *    attribute: visualUpdate true      *  description: If true tick marks are painted on the slider.      */ public void setPaintTicks(boolean b) { boolean oldValue = paintTicks; paintTicks = b; firePropertyChange("paintTicks", oldValue, paintTicks); if (paintTicks != oldValue) { revalidate(); repaint(); } }   /**      * Tells if the track (area the slider slides in) is to be painted.      * @return true if track is painted, else false      * @see #setPaintTrack      */ public boolean getPaintTrack() { return paintTrack; }     /**      * Determines whether the track is painted on the slider.      * By default, this property is {@code true}.      *      * @param  b  whether or not to paint the slider track      * @see #getPaintTrack      * @beaninfo      *        bound: true      *    attribute: visualUpdate true      *  description: If true, the track is painted on the slider.      */ public void setPaintTrack(boolean b) { boolean oldValue = paintTrack; paintTrack = b; firePropertyChange("paintTrack", oldValue, paintTrack); if (paintTrack != oldValue) { repaint(); } }     /**      * Tells if labels are to be painted.      * @return true if labels are painted, else false      * @see #setPaintLabels      */ public boolean getPaintLabels() { return paintLabels; }     /**      * Determines whether labels are painted on the slider.      * <p>      * This method will also set up a label table for you.      * If there is not already a label table, and the major tick spacing is      * {@code > 0},      * a standard label table will be generated (by calling      * {@code createStandardLabels}) with labels at the major tick marks.      * The label table is then set on the slider by calling      * {@code setLabelTable}.      * <p>      * By default, this property is {@code false}.      *      * @param  b  whether or not to paint labels      * @see #getPaintLabels      * @see #getLabelTable      * @see #createStandardLabels(int)      * @beaninfo      *        bound: true      *    attribute: visualUpdate true      *  description: If true labels are painted on the slider.      */ public void setPaintLabels(boolean b) { boolean oldValue = paintLabels; paintLabels = b; if ( labelTable == null && getMajorTickSpacing() > 0 ) { setLabelTable( createStandardLabels( getMajorTickSpacing() ) ); } firePropertyChange("paintLabels", oldValue, paintLabels); if (paintLabels != oldValue) { revalidate(); repaint(); } }     /**      * See readObject() and writeObject() in JComponent for more      * information about serialization in Swing.      */ private void writeObject(ObjectOutputStream s) throws IOException { s.defaultWriteObject(); if (getUIClassID().equals(uiClassID)) { byte count = JComponent.getWriteObjCounter(this); JComponent.setWriteObjCounter(this, --count); if (count == 0 && ui != null) { ui.installUI(this); } } }     /**      * Returns a string representation of this JSlider. This method      * is intended to be used only for debugging purposes, and the      * content and format of the returned string may vary between      * implementations. The returned string may be empty but may not      * be <code>null</code>.      *      * @return  a string representation of this JSlider.      */ protected String paramString() { String paintTicksString = (paintTicks ? "true" : "false"); String paintTrackString = (paintTrack ? "true" : "false"); String paintLabelsString = (paintLabels ? "true" : "false"); String isInvertedString = (isInverted ? "true" : "false"); String snapToTicksString = (snapToTicks ? "true" : "false"); String snapToValueString = (snapToValue ? "true" : "false"); String orientationString = (orientation == HORIZONTAL ? "HORIZONTAL" : "VERTICAL");   return super.paramString() + ",isInverted=" + isInvertedString + ",majorTickSpacing=" + majorTickSpacing + ",minorTickSpacing=" + minorTickSpacing + ",orientation=" + orientationString + ",paintLabels=" + paintLabelsString + ",paintTicks=" + paintTicksString + ",paintTrack=" + paintTrackString + ",snapToTicks=" + snapToTicksString + ",snapToValue=" + snapToValueString; }     ///////////////// // Accessibility support ////////////////   /**      * Gets the AccessibleContext associated with this JSlider.      * For sliders, the AccessibleContext takes the form of an      * AccessibleJSlider.      * A new AccessibleJSlider instance is created if necessary.      *      * @return an AccessibleJSlider that serves as the      *         AccessibleContext of this JSlider      */ public AccessibleContext getAccessibleContext() { if (accessibleContext == null) { accessibleContext = new AccessibleJSlider(); } return accessibleContext; }   /**      * This class implements accessibility support for the      * <code>JSlider</code> class.  It provides an implementation of the      * Java Accessibility API appropriate to slider user-interface elements.      * <p>      * <strong>Warning:</strong>      * Serialized objects of this class will not be compatible with      * future Swing releases. The current serialization support is      * appropriate for short term storage or RMI between applications running      * the same version of Swing.  As of 1.4, support for long term storage      * of all JavaBeans<sup><font size="-2">TM</font></sup>      * has been added to the <code>java.beans</code> package.      * Please see {@link java.beans.XMLEncoder}.      */ protected class AccessibleJSlider extends AccessibleJComponent implements AccessibleValue {   /**          * Get the state set of this object.          *          * @return an instance of AccessibleState containing the current state          * of the object          * @see AccessibleState          */ public AccessibleStateSet getAccessibleStateSet() { AccessibleStateSet states = super.getAccessibleStateSet(); if (getValueIsAdjusting()) { states.add(AccessibleState.BUSY); } if (getOrientation() == VERTICAL) { states.add(AccessibleState.VERTICAL); } else { states.add(AccessibleState.HORIZONTAL); } return states; }   /**          * Get the role of this object.          *          * @return an instance of AccessibleRole describing the role of the object          */ public AccessibleRole getAccessibleRole() { return AccessibleRole.SLIDER; }   /**          * Get the AccessibleValue associated with this object.  In the          * implementation of the Java Accessibility API for this class,          * return this object, which is responsible for implementing the          * AccessibleValue interface on behalf of itself.          *          * @return this object          */ public AccessibleValue getAccessibleValue() { return this; }   /**          * Get the accessible value of this object.          *          * @return The current value of this object.          */ public Number getCurrentAccessibleValue() { return new Integer(getValue()); }   /**          * Set the value of this object as a Number.          *          * @return True if the value was set.          */ public boolean setCurrentAccessibleValue(Number n) { // TIGER - 4422535 if (n == null) { return false; } setValue(n.intValue()); return true; }   /**          * Get the minimum accessible value of this object.          *          * @return The minimum value of this object.          */ public Number getMinimumAccessibleValue() { return new Integer(getMinimum()); }   /**          * Get the maximum accessible value of this object.          *          * @return The maximum value of this object.          */ public Number getMaximumAccessibleValue() { // TIGER - 4422362 BoundedRangeModel model = MySlide.this.getModel(); return new Integer(model.getMaximum() - model.getExtent()); } } // AccessibleJSlider }

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Salut,

Pourquoi vouloir créer un RangeSlider, alors qu'on peut en trouver de nombreux exemple déjà fait ? Celui de Jide Commons déjà (open source). Tu peux chercher aussi "ernieyu rangeslider".

En fait, tu devrais étendre JSlider, ce qui t'éviterait d'avoir à dupliquer du code Swing et d'avoir ce problème avec les méthodes dont tu parles.

Sinon, oui, tu peux mettre tes propres classes dans le package javax.swing.

Bonjour Joel,

Merci pour votre réponse !

En fait le ernieyu rangeslider est super ! c'est ce que je recherchais à faire.
Je vais voir comment la personne a fait pour créer ce composant ! je trouve cela intéressant de créer des composants comme cela.

Citation:

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Sinon, oui, tu peux mettre tes propres classes dans le package javax.swing.

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Pour ce faire, faut-il simplement créer le package javax.swing à la racine de mon projet dans eclipse ou faut-il que je mette carrément ma classe dans le jdk ?


Bonne soirée :)

Citation:

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Envoyé par francky74

Pour ce faire, faut-il simplement créer le package javax.swing à la racine de mon projet dans eclipse

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Oui. Enfin, pas à la racine, mais dans le dossier src, là où tu mets tes sources. Il suffit que lorsque tu crées ta classe par le menu "New > Class", que tu tapes dans le champ package, "javax.swing" et Eclipse te crééra le .java au bon endroit.

Super ! j'essaierai cela demain avec les yeux ouverts :mouarf: car là je manque de sommeil :roll:

MERCIIIII :D