From e589ede6fdc3f0f3f70be950bdd85d996eb19eca Mon Sep 17 00:00:00 2001
From: Michael Koch <konqueror@gmx.de>
Date: Sun, 2 Mar 2003 14:01:40 +0000
Subject: 2003-03-02  Michael Koch  <konqueror@gmx.de>

	* java/awt/Component.java
	(eventTypeEnabled): New method.
	(dispatchEventImpl): Moved checks for event to eventTypeEnabled.
	* java/awt/Container.java
	(changeSupport): New member variable.
	(addPropertyChangeListener): New methods.
	* java/awt/ContainerOrderFocusTraversalPolicy.java
	(ContainerOrderFocusTraversalPolicy): Added comment.
	(getComponentAfter): Throw exception, documentation added.
	(getComponentBefore): Throw exception, documentation added.
	(getFirstComponent): Throw exception, documentation added.
	(getLastComponent): Throw exception, documentation added.
	(getDefaultComponent): Throw exception, documentation added.
	* java/awt/EventQueue.java: Reindented.
	* java/awt/FocusTraversalPolicy.java:
	(FocusTraversalPolicy): Added comment.
	(getComponentAfter): Documentation added.
	(getComponentBefore): Documentation added.
	(getFirstComponent): Documentation added.
	(getLastComponent): Documentation added.
	(getDefaultComponent): Documentation added.
	(getInitialComponent): Documentation added.
	* java/awt/ScrollPane.java
	(wheelScrollingEnabled): New member variable.
	(ScrollPane): Initialize wheelScollingEnabled.
	(eventTypeEnabled): New method.
	(isWheelScrollingEnabled): New method.
	(setWheelScrollingEnabled): New method.

From-SVN: r63663
---
 libjava/java/awt/Component.java | 88 ++++++++++++++++++++++++-----------------
 1 file changed, 52 insertions(+), 36 deletions(-)

(limited to 'libjava/java/awt/Component.java')

diff --git a/libjava/java/awt/Component.java b/libjava/java/awt/Component.java
index 88f91810dc0..c9afaa14bf3 100644
--- a/libjava/java/awt/Component.java
+++ b/libjava/java/awt/Component.java
@@ -4075,45 +4075,61 @@ p   * <li>the set of backward traversal keys
    */
   void dispatchEventImpl(AWTEvent e)
   {
-    // Make use of event id's in order to avoid multiple instanceof tests.
-    if (e.id <= ComponentEvent.COMPONENT_LAST
-        && e.id >= ComponentEvent.COMPONENT_FIRST
-        && (componentListener != null
-            || (eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0))
-      processEvent(e);
-    else if (e.id <= KeyEvent.KEY_LAST
-             && e.id >= KeyEvent.KEY_FIRST
-             && (keyListener != null
-                 || (eventMask & AWTEvent.KEY_EVENT_MASK) != 0))
-      processEvent(e);
-    else if (e.id <= MouseEvent.MOUSE_LAST
-             && e.id >= MouseEvent.MOUSE_FIRST
-             && (mouseListener != null
-                 || mouseMotionListener != null
-                 || (eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0))
-      processEvent(e);
-    else if (e.id <= FocusEvent.FOCUS_LAST
-             && e.id >= FocusEvent.FOCUS_FIRST
-             && (focusListener != null
-                 || (eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0))
-      processEvent(e);
-    else if (e.id <= InputMethodEvent.INPUT_METHOD_LAST
-             && e.id >= InputMethodEvent.INPUT_METHOD_FIRST
-             && (inputMethodListener != null
-                 || (eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0))
-      processEvent(e);
-    else if (e.id <= HierarchyEvent.HIERARCHY_LAST
-             && e.id >= HierarchyEvent.HIERARCHY_FIRST
-             && (hierarchyListener != null
-                 || hierarchyBoundsListener != null
-                 || (eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0))
-      processEvent(e);
-    else if (e.id <= PaintEvent.PAINT_LAST
-             && e.id >= PaintEvent.PAINT_FIRST
-             && (eventMask & AWTEvent.PAINT_EVENT_MASK) != 0)
+    if (eventTypeEnabled (e.id))
       processEvent(e);
   }
 
+  /**
+   * Tells wether or not an event type is enabled.
+   */
+  boolean eventTypeEnabled (int type)
+  {
+    if (type > AWTEvent.RESERVED_ID_MAX)
+      return true;
+
+    switch (type)
+      {
+      case ComponentEvent.COMPONENT_HIDDEN:
+      case ComponentEvent.COMPONENT_MOVED:
+      case ComponentEvent.COMPONENT_RESIZED:
+      case ComponentEvent.COMPONENT_SHOWN:
+        return (componentListener != null
+                || (eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0);
+
+      case KeyEvent.KEY_PRESSED:
+      case KeyEvent.KEY_RELEASED:
+      case KeyEvent.KEY_TYPED:
+        return (keyListener != null
+                || (eventMask & AWTEvent.KEY_EVENT_MASK) != 0);
+
+      case MouseEvent.MOUSE_CLICKED:
+      case MouseEvent.MOUSE_ENTERED:
+      case MouseEvent.MOUSE_EXITED:
+      case MouseEvent.MOUSE_PRESSED:
+      case MouseEvent.MOUSE_RELEASED:
+        return (mouseListener != null
+                || mouseMotionListener != null
+                || (eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0);
+        
+      case FocusEvent.FOCUS_GAINED:
+      case FocusEvent.FOCUS_LOST:
+        return (focusListener != null
+                || (eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0);
+
+      case InputMethodEvent.INPUT_METHOD_TEXT_CHANGED:
+      case InputMethodEvent.CARET_POSITION_CHANGED:
+        return (inputMethodListener != null
+                || (eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0);
+        
+      case PaintEvent.PAINT:
+      case PaintEvent.UPDATE:
+        return (eventMask & AWTEvent.PAINT_EVENT_MASK) != 0;
+        
+      default:
+        return false;
+      }
+  }
+
   /**
    * Coalesce paint events. Current heuristic is: Merge if the union of
    * areas is less than twice that of the sum of the areas. The X server
-- 
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