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                 // Set window position according to preferences, and set prefs when moving
  53                 Point position = Prefs.getWindowPosition(this.getClass());
  54                 if (position == null)
  55                         this.setLocationByPlatform(true);
  56                 else
  57                         this.setLocation(position);
  58
  59                 this.addComponentListener(new ComponentAdapter() {
  60                         @Override
  61                         public void componentMoved(ComponentEvent e) {
  62                                 Prefs.setWindowPosition(ComponentConfigDialog.this.getClass(),
  63                                                 ComponentConfigDialog.this.getLocation());
  64                         }
  65                 });
  66
  67                 GUIUtil.setDisposableDialogOptions(this, null);
  68         }
  69
  70
  71         /**
  72          * Set the component being configured.  The listening connections of the old configurator
  73          * will be removed and the new ones created.
  74          *
  75          * @param component  Component to configure.
  76          */
  77         private void setComponent(OpenRocketDocument document, RocketComponent component) {
  78                 if (this.document != null) {
  79                         this.document.getRocket().removeComponentChangeListener(this);
  80                 }
  81
  82                 if (configurator != null) {
  83                         // Remove listeners by setting all applicable models to null
  84                         GUIUtil.setNullModels(configurator);  // null-safe
  85                 }
  86
  87                 this.document = document;
  88                 this.component = component;
  89                 this.document.getRocket().addComponentChangeListener(this);
  90
  91                 configurator = getDialogContents();
  92                 this.setContentPane(configurator);
  93                 configurator.updateFields();
  94
  95                 setTitle(component.getComponentName()+" configuration");
  96
  97 //              Dimension pref = getPreferredSize();
  98 //              Dimension real = getSize();
  99 //              if (pref.width > real.width || pref.height > real.height)
 100                 this.pack();
 101         }
 102
 103         /**
 104          * Return the configurator panel of the current component.
 105          */
 106         private RocketComponentConfig getDialogContents() {
 107                 Constructor<? extends RocketComponentConfig> c =
 108                         findDialogContentsConstructor(component);
 109                 if (c != null) {
 110                         try {
 111                                 return (RocketComponentConfig) c.newInstance(component);
 112                         } catch (InstantiationException e) {
 113                                 throw new BugException("BUG in constructor reflection",e);
 114                         } catch (IllegalAccessException e) {
 115                                 throw new BugException("BUG in constructor reflection",e);
 116                         } catch (InvocationTargetException e) {
 117                                 throw Reflection.handleWrappedException(e);
 118                         }
 119                 }
 120
 121                 // Should never be reached, since RocketComponentConfig should catch all
 122                 // components without their own configurator.
 123                 throw new BugException("Unable to find any configurator for "+component);
 124         }
 125
 126         /**
 127          * Finds the Constructor of the given component's config dialog panel in
 128          * CONFIGDIALOGPACKAGE.
 129          */
 130         @SuppressWarnings("unchecked")
 131         private static Constructor<? extends RocketComponentConfig>
 132                         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                         currentclass = currentclass.getSuperclass();
 157                 }
 158                 return null;
 159         }
 160
 161
 162
 163
 164         //////////  Static dialog  /////////
 165
 166         /**
 167          * A singleton configuration dialog.  Will create and show a new dialog if one has not
 168          * previously been used, or update the dialog and show it if a previous one exists.
 169          *
 170          * @param document              the document to configure.
 171          * @param component             the component to configure.
 172          */
 173         public static void showDialog(Window parent, OpenRocketDocument document,
 174                         RocketComponent component) {
 175                 if (dialog != null)
 176                         dialog.dispose();
 177
 178                 dialog = new ComponentConfigDialog(parent, document, component);
 179                 dialog.setVisible(true);
 180
 181                 document.addUndoPosition("Modify "+component.getComponentName());
 182         }
 183
 184
 185         /* package */
 186         static void showDialog(RocketComponent component) {
 187                 showDialog(dialog.parent, dialog.document, component);
 188         }
 189
 190         /**
 191          * Hides the configuration dialog.  May be used even if not currently visible.
 192          */
 193         public static void hideDialog() {
 194                 if (dialog != null)
 195                         dialog.setVisible(false);
 196         }
 197
 198
 199         /**
 200          * Add an undo position for the current document.  This is intended for use only
 201          * by the currently open dialog.
 202          *
 203          * @param description  Description of the undoable action
 204          */
 205         /*package*/ static void addUndoPosition(String description) {
 206                 if (dialog == null) {
 207                         throw new IllegalStateException("Dialog not open, report bug!");
 208                 }
 209                 dialog.document.addUndoPosition(description);
 210         }
 211
 212         /*package*/
 213         static String getUndoDescription() {
 214                 if (dialog == null) {
 215                         throw new IllegalStateException("Dialog not open, report bug!");
 216                 }
 217                 return dialog.document.getUndoDescription();
 218         }
 219
 220         /**
 221          * Returns whether the singleton configuration dialog is currently visible or not.
 222          */
 223         public static boolean isDialogVisible() {
 224                 return (dialog!=null) && (dialog.isVisible());
 225         }
 226
 227
 228         public void componentChanged(ComponentChangeEvent e) {
 229                 if (e.isTreeChange() || e.isUndoChange()) {
 230
 231                         // Hide dialog in case of tree or undo change
 232                         dialog.setVisible(false);
 233
 234                 } else {
 235                         /*
 236                          * TODO: HIGH:  The line below has caused a NullPointerException (without null check)
 237                          * How is this possible?  The null check was added to avoid this, but the
 238                          * root cause should be analyzed.
 239                          * [Openrocket-bugs] 2009-12-12 19:23:22 Automatic bug report for OpenRocket 0.9.5
 240                          */
 241                         if (configurator != null)
 242                                 configurator.updateFields();
 243                 }
 244         }
 245
 246 }