Chip 2001 June/CHIPHEFT062001.ISO/browser/nc32lyc/comm.z/java40.jar/java/awt/LightweightDispatcher.class

Java Class File | 2000-08-15 | 3.7 KB | 202 lines

package java.awt;

import java.awt.event.FocusEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.io.Serializable;

class LightweightDispatcher implements Serializable {
   private static final long serialVersionUID = 5184291520170872969L;
   private Container nativeContainer;
   private Component focus;
   private transient Component mouseEventTarget;
   private boolean dragging;
   private Cursor nativeCursor;
   private long eventMask;
   private static final long PROXY_EVENT_MASK = 60L;
   private static final long MOUSE_MASK = 48L;

   LightweightDispatcher(Container var1) {
      this.nativeContainer = var1;
      this.focus = null;
      this.mouseEventTarget = null;
      this.eventMask = 0L;
   }

   void enableEvents(long var1) {
      this.eventMask |= var1;
   }

   boolean setFocusRequest(Component var1) {
      boolean var2 = true;
      Window var3 = this.nativeContainer.getWindow();
      if (var3 != null && var1 != null) {
         Component var4 = var3.getFocusOwner();
         if (var4 == this.nativeContainer) {
            this.focus = var1;
            var1.dispatchEvent(new FocusEvent(var1, 1004, false));
            var2 = false;
         } else if (var4 == var1) {
            this.focus = var1;
            var2 = false;
         } else if (var4 == this.focus && this.focus != null) {
            if (this.focus != null) {
               this.focus.dispatchEvent(new FocusEvent(this.focus, 1005, false));
            }

            this.focus = var1;
            var1.dispatchEvent(new FocusEvent(var1, 1004, false));
            var2 = false;
         } else {
            this.focus = var1;
         }
      }

      return var2;
   }

   boolean dispatchEvent(AWTEvent var1) {
      if ((this.eventMask & 60L) != 0L) {
         if (var1 instanceof MouseEvent && (this.eventMask & 48L) != 0L) {
            MouseEvent var4 = (MouseEvent)var1;
            return this.processMouseEvent(var4);
         }

         if (var1 instanceof FocusEvent) {
            FocusEvent var3 = (FocusEvent)var1;
            return this.processFocusEvent(var3);
         }

         if (var1 instanceof KeyEvent) {
            KeyEvent var2 = (KeyEvent)var1;
            return this.processKeyEvent(var2);
         }
      }

      return false;
   }

   private boolean processKeyEvent(KeyEvent var1) {
      if (this.focus != null) {
         KeyEvent var2 = new KeyEvent(this.focus, ((AWTEvent)var1).getID(), ((InputEvent)var1).getWhen(), ((InputEvent)var1).getModifiers(), var1.getKeyCode(), var1.getKeyChar());
         this.focus.dispatchEvent(var2);
         return true;
      } else {
         return false;
      }
   }

   private boolean processFocusEvent(FocusEvent var1) {
      if (this.focus != null) {
         int var2 = ((AWTEvent)var1).getID();
         FocusEvent var3 = new FocusEvent(this.focus, var2, var1.isTemporary());
         this.focus.dispatchEvent(var3);
         if (var2 == 1005 && !var1.isTemporary()) {
            this.focus = null;
         }

         return true;
      } else {
         return false;
      }
   }

   private boolean processMouseEvent(MouseEvent var1) {
      int var2 = ((AWTEvent)var1).getID();
      if (this.mouseEventTarget != null) {
         switch (var2) {
            case 500:
               this.retargetMouseEvent(var2, var1);
               break;
            case 501:
               this.dragging = true;
               this.retargetMouseEvent(var2, var1);
               break;
            case 502:
               this.dragging = false;
               this.retargetMouseEvent(var2, var1);
               Component var3 = this.nativeContainer.getMouseEventTarget(var1.getX(), var1.getY());
               if (var3 != this.mouseEventTarget) {
                  this.setMouseTarget(var3, var1);
               }
               break;
            case 503:
               Component var4 = this.nativeContainer.getMouseEventTarget(var1.getX(), var1.getY());
               if (var4 != this.mouseEventTarget) {
                  this.setMouseTarget(var4, var1);
               }

               if (this.mouseEventTarget != null) {
                  this.retargetMouseEvent(var2, var1);
               }
               break;
            case 504:
               this.retargetMouseEvent(var2, var1);
               break;
            case 505:
               if (this.dragging) {
                  this.retargetMouseEvent(var2, var1);
               } else {
                  this.setMouseTarget((Component)null, var1);
               }
               break;
            case 506:
               this.retargetMouseEvent(var2, var1);
         }

         ((InputEvent)var1).consume();
      } else {
         Component var5 = this.nativeContainer.getMouseEventTarget(var1.getX(), var1.getY());
         if (var5 != null) {
            this.setMouseTarget(var5, var1);
            if (var2 != 504) {
               this.retargetMouseEvent(var2, var1);
            }

            ((InputEvent)var1).consume();
         }
      }

      return ((InputEvent)var1).isConsumed();
   }

   void setMouseTarget(Component var1, MouseEvent var2) {
      if (this.mouseEventTarget != null) {
         this.retargetMouseEvent(505, var2);
      } else {
         this.nativeCursor = this.nativeContainer.getCursor();
      }

      this.mouseEventTarget = var1;
      if (this.mouseEventTarget != null) {
         this.retargetMouseEvent(504, var2);
      } else {
         this.nativeContainer.setCursor(this.nativeCursor);
      }
   }

   void retargetMouseEvent(int var1, MouseEvent var2) {
      int var3 = var2.getX();
      int var4 = var2.getY();

      Object var5;
      for(var5 = this.mouseEventTarget; var5 != null && var5 != this.nativeContainer; var5 = ((Component)var5).getParent()) {
         var3 -= ((Component)var5).x;
         var4 -= ((Component)var5).y;
      }

      if (var5 != null) {
         MouseEvent var6 = new MouseEvent(this.mouseEventTarget, var1, ((InputEvent)var2).getWhen(), ((InputEvent)var2).getModifiers(), var3, var4, var2.getClickCount(), var2.isPopupTrigger());
         this.mouseEventTarget.dispatchEvent(var6);
         if (this.mouseEventTarget != null) {
            Cursor var7 = this.mouseEventTarget.getCursor();
            if (this.nativeContainer.getCursor() != var7) {
               this.nativeContainer.setCursor(var7);
            }
         }
      }

   }
}