git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/gui/configdialog/ComponentConfigDialog.java

   1 package net.sf.openrocket.gui.configdialog;
   2
   3
   4 import java.awt.Point;
   5 import java.awt.Window;
   6 import java.awt.event.ComponentAdapter;
   7 import java.awt.event.ComponentEvent;
   8 import java.lang.reflect.Constructor;
   9 import java.lang.reflect.InvocationTargetException;
  10
  11 import javax.swing.JDialog;
  12
  13 import net.sf.openrocket.document.OpenRocketDocument;
  14 import net.sf.openrocket.rocketcomponent.ComponentChangeEvent;
  15 import net.sf.openrocket.rocketcomponent.ComponentChangeListener;
  16 import net.sf.openrocket.rocketcomponent.RocketComponent;
  17 import net.sf.openrocket.util.BugException;
  18 import net.sf.openrocket.util.GUIUtil;
  19 import net.sf.openrocket.util.Prefs;
  20 import net.sf.openrocket.util.Reflection;
  21
  22 /**
  23  * A dialog that contains the configuration elements of one component.
  24  * The contents of the dialog are instantiated from CONFIGDIALOGPACKAGE according
  25  * to the current component.
  26  *
  27  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  28  */
  29
  30 public class ComponentConfigDialog extends JDialog implements ComponentChangeListener {
  31         private static final long serialVersionUID = 1L;
  32         private static final String CONFIGDIALOGPACKAGE = "net.sf.openrocket.gui.configdialog";
  33         private static final String CONFIGDIALOGPOSTFIX = "Config";
  34
  35
  36         private static ComponentConfigDialog dialog = null;
  37
  38
  39         private OpenRocketDocument document = null;
  40         private RocketComponent component = null;
  41         private RocketComponentConfig configurator = null;
  42
  43         private final Window parent;
  44
  45         private ComponentConfigDialog(Window parent, OpenRocketDocument document,
  46                         RocketComponent component) {
  47                 super(parent);
  48                 this.parent = parent;
  49
  50                 setComponent(document, component);
  51
  52                 GUIUtil.setDisposableDialogOptions(this, null);
  53
  54                 // Set window position according to preferences, and set prefs when moving
  55                 Point position = Prefs.getWindowPosition(this.getClass());
  56                 if (position != null) {
  57                         this.setLocationByPlatform(false);
  58                         this.setLocation(position);
  59                 }
  60
  61                 this.addComponentListener(new ComponentAdapter() {
  62                         @Override
  63                         public void componentMoved(ComponentEvent e) {
  64                                 Prefs.setWindowPosition(ComponentConfigDialog.this.getClass(),
  65                                                 ComponentConfigDialog.this.getLocation());
  66                         }
  67                 });
  68
  69         }
  70
  71
  72         /**
  73          * Set the component being configured.  The listening connections of the old configurator
  74          * will be removed and the new ones created.
  75          *
  76          * @param component  Component to configure.
  77          */
  78         private void setComponent(OpenRocketDocument document, RocketComponent component) {
  79                 if (this.document != null) {
  80                         this.document.getRocket().removeComponentChangeListener(this);
  81                 }
  82
  83                 if (configurator != null) {
  84                         // Remove listeners by setting all applicable models to null
  85                         GUIUtil.setNullModels(configurator); // null-safe
  86                 }
  87
  88                 this.document = document;
  89                 this.component = component;
  90                 this.document.getRocket().addComponentChangeListener(this);
  91
  92                 configurator = getDialogContents();
  93                 this.setContentPane(configurator);
  94                 configurator.updateFields();
  95
  96                 setTitle(component.getComponentName() + " configuration");
  97
  98                 //              Dimension pref = getPreferredSize();
  99                 //              Dimension real = getSize();
 100                 //              if (pref.width > real.width || pref.height > real.height)
 101                 this.pack();
 102         }
 103
 104         /**
 105          * Return the configurator panel of the current component.
 106          */
 107         private RocketComponentConfig getDialogContents() {
 108                 Constructor<? extends RocketComponentConfig> c =
 109                                 findDialogContentsConstructor(component);
 110                 if (c != null) {
 111                         try {
 112                                 return (RocketComponentConfig) c.newInstance(component);
 113                         } catch (InstantiationException e) {
 114                                 throw new BugException("BUG in constructor reflection", e);
 115                         } catch (IllegalAccessException e) {
 116                                 throw new BugException("BUG in constructor reflection", e);
 117                         } catch (InvocationTargetException e) {
 118                                 throw Reflection.handleWrappedException(e);
 119                         }
 120                 }
 121
 122                 // Should never be reached, since RocketComponentConfig should catch all
 123                 // components without their own configurator.
 124                 throw new BugException("Unable to find any configurator for " + component);
 125         }
 126
 127         /**
 128          * Finds the Constructor of the given component's config dialog panel in
 129          * CONFIGDIALOGPACKAGE.
 130          */
 131         @SuppressWarnings("unchecked")
 132         private static Constructor<? extends RocketComponentConfig> findDialogContentsConstructor(RocketComponent component) {
 133                 Class<?> currentclass;
 134                 String currentclassname;
 135                 String configclassname;
 136
 137                 Class<?> configclass;
 138                 Constructor<? extends RocketComponentConfig> c;
 139
 140                 currentclass = component.getClass();
 141                 while ((currentclass != null) && (currentclass != Object.class)) {
 142                         currentclassname = currentclass.getCanonicalName();
 143                         int index = currentclassname.lastIndexOf('.');
 144                         if (index >= 0)
 145                                 currentclassname = currentclassname.substring(index + 1);
 146                         configclassname = CONFIGDIALOGPACKAGE + "." + currentclassname +
 147                                         CONFIGDIALOGPOSTFIX;
 148
 149                         try {
 150                                 configclass = Class.forName(configclassname);
 151                                 c = (Constructor<? extends RocketComponentConfig>)
 152                                                 configclass.getConstructor(RocketComponent.class);
 153                                 return c;
 154                         } catch (Exception ignore) {
 155                         }
 156
 157                         currentclass = currentclass.getSuperclass();
 158                 }
 159                 return null;
 160         }
 161
 162
 163
 164
 165         //////////  Static dialog  /////////
 166
 167         /**
 168          * A singleton configuration dialog.  Will create and show a new dialog if one has not
 169          * previously been used, or update the dialog and show it if a previous one exists.
 170          *
 171          * @param document              the document to configure.
 172          * @param component             the component to configure.
 173          */
 174         public static void showDialog(Window parent, OpenRocketDocument document,
 175                         RocketComponent component) {
 176                 if (dialog != null)
 177                         dialog.dispose();
 178
 179                 dialog = new ComponentConfigDialog(parent, document, component);
 180                 dialog.setVisible(true);
 181
 182                 document.addUndoPosition("Modify " + component.getComponentName());
 183         }
 184
 185
 186         /* package */
 187         static void showDialog(RocketComponent component) {
 188                 showDialog(dialog.parent, dialog.document, component);
 189         }
 190
 191         /**
 192          * Hides the configuration dialog.  May be used even if not currently visible.
 193          */
 194         public static void hideDialog() {
 195                 if (dialog != null)
 196                         dialog.setVisible(false);
 197         }
 198
 199
 200         /**
 201          * Add an undo position for the current document.  This is intended for use only
 202          * by the currently open dialog.
 203          *
 204          * @param description  Description of the undoable action
 205          */
 206         /*package*/static void addUndoPosition(String description) {
 207                 if (dialog == null) {
 208                         throw new IllegalStateException("Dialog not open, report bug!");
 209                 }
 210                 dialog.document.addUndoPosition(description);
 211         }
 212
 213         /*package*/
 214         static String getUndoDescription() {
 215                 if (dialog == null) {
 216                         throw new IllegalStateException("Dialog not open, report bug!");
 217                 }
 218                 return dialog.document.getUndoDescription();
 219         }
 220
 221         /**
 222          * Returns whether the singleton configuration dialog is currently visible or not.
 223          */
 224         public static boolean isDialogVisible() {
 225                 return (dialog != null) && (dialog.isVisible());
 226         }
 227
 228
 229         public void componentChanged(ComponentChangeEvent e) {
 230                 if (e.isTreeChange() || e.isUndoChange()) {
 231
 232                         // Hide dialog in case of tree or undo change
 233                         dialog.setVisible(false);
 234
 235                 } else {
 236                         /*
 237                          * TODO: HIGH:  The line below has caused a NullPointerException (without null check)
 238                          * How is this possible?  The null check was added to avoid this, but the
 239                          * root cause should be analyzed.
 240                          * [Openrocket-bugs] 2009-12-12 19:23:22 Automatic bug report for OpenRocket 0.9.5
 241                          */
 242                         if (configurator != null)
 243                                 configurator.updateFields();
 244                 }
 245         }
 246
 247 }