1 files changed, 121 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/WidgetTable.java b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/WidgetTable.java
new file mode 100755
index 0000000000..e0858ec93b
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/WidgetTable.java
@@ -0,0 +1,121 @@
+package org.eclipse.swt.widgets;
+
+import org.eclipse.swt.internal.motif.*;
+
+/*
+ * Licensed Materials - Property of IBM,
+ * (c) Copyright IBM Corp. 1998, 2000  All Rights Reserved
+ */
+ 
+class WidgetTable {
+	static int FreeSlot = 0;
+	static int GrowSize = 1024;
+	static int [] IndexTable = new int [GrowSize];
+	static Shell [] Shells = new Shell [GrowSize / 8];
+	static Widget [] WidgetTable = new Widget [GrowSize];
+	static int [] ArgList = {OS.XmNuserData, 0};
+	static {
+		for (int i=0; i<GrowSize-1; i++) IndexTable [i] = i + 1;
+		IndexTable [GrowSize - 1] = -1;	
+	}
+public static synchronized Widget get (int handle) {
+	if (handle == 0) return null;
+	if (OS.XtIsSubclass (handle, OS.ShellWidgetClass ())) {
+		for (int i=0; i<Shells.length; i++) {
+			Widget shell = Shells [i];
+			if ((shell != null) && (shell.topHandle () == handle)) return shell;
+		}
+		return null;
+	}
+	ArgList [1] = 0;
+	OS.XtGetValues (handle, ArgList, ArgList.length / 2);
+	if (ArgList [1] == 0) return null;
+	int index = ArgList [1] - 1;
+	if (0 <= index && index < WidgetTable.length) return WidgetTable [index];
+	return null;
+}
+public synchronized static void put (int handle, Widget widget) {
+	if (handle == 0) return;
+	if (OS.XtIsSubclass (handle, OS.ShellWidgetClass ())) {
+		for (int i=0; i<Shells.length; i++) {
+			if (Shells [i] == null) {
+				Shells [i] = (Shell) widget;
+				return;
+			}
+		}
+		Shell [] newShells = new Shell [Shells.length + GrowSize / 8];
+		System.arraycopy (Shells, 0, newShells, 0, Shells.length);
+		newShells [Shells.length] = (Shell) widget;
+		Shells = newShells;
+		return;
+	}
+	if (FreeSlot == -1) {
+		int length = (FreeSlot = IndexTable.length) + GrowSize;
+		int [] newIndexTable = new int [length];
+		Widget [] newWidgetTable = new Widget [length];
+		System.arraycopy (IndexTable, 0, newIndexTable, 0, FreeSlot);
+		System.arraycopy (WidgetTable, 0, newWidgetTable, 0, FreeSlot);
+		for (int i=FreeSlot; i<length-1; i++) {
+			newIndexTable [i] = i + 1;
+		}
+		newIndexTable [length - 1] = -1;
+		IndexTable = newIndexTable;
+		WidgetTable = newWidgetTable;
+	}
+	ArgList [1] = FreeSlot + 1;
+	OS.XtSetValues (handle, ArgList, ArgList.length / 2);
+	int oldSlot = FreeSlot;
+	FreeSlot = IndexTable [oldSlot];
+	IndexTable [oldSlot] = -2;
+	WidgetTable [oldSlot] = widget;
+}
+public static synchronized Widget remove (int handle) {
+	if (handle == 0) return null;
+	if (OS.XtIsSubclass (handle, OS.ShellWidgetClass ())) {
+		for (int i=0; i<Shells.length; i++) {
+			Widget shell = Shells [i];
+			if ((shell != null) && (shell.topHandle () == handle)) {
+				Shells [i] = null;
+				return shell;
+			}
+		}
+		return null;
+	}
+	ArgList [1] = 0;
+	Widget widget = null;
+	OS.XtGetValues (handle, ArgList, ArgList.length / 2);
+	int index = ArgList [1] - 1;
+	if (0 <= index && index < WidgetTable.length) {
+		widget = WidgetTable [index];
+		WidgetTable [index] = null;
+		IndexTable [index] = FreeSlot;
+		FreeSlot = index;
+		ArgList [1] = 0;
+		OS.XtSetValues (handle, ArgList, ArgList.length / 2);
+	}
+	return widget;
+}
+public static synchronized Shell [] shells () {
+	int length = 0;
+	for (int i=0; i<Shells.length; i++) {
+		if (Shells [i] != null) length++;
+	}
+	int index = 0;
+	Shell [] result = new Shell [length];
+	for (int i=0; i<Shells.length; i++) {
+		Shell widget = Shells [i];
+		if (widget != null) result [index++] = widget;
+	}
+	return result;
+}
+public static synchronized int size () {
+	int length = 0;
+	for (int i=0; i<Shells.length; i++) {
+		if (Shells [i] != null) length++;
+	}
+	for (int i=0; i<WidgetTable.length; i++) {
+		if (WidgetTable [i] != null) length++;
+	}
+	return length;
+}
+}