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downloading a git-generated archive based on the 'upstream' tag
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1 files changed, 225 insertions, 0 deletions

diff --git a/libjava/classpath/javax/swing/SizeSequence.java b/libjava/classpath/javax/swing/SizeSequence.java
new file mode 100644
index 000000000..69c7366be
--- /dev/null
+++ b/libjava/classpath/javax/swing/SizeSequence.java
@@ -0,0 +1,225 @@
+/* SizeSequence.java --
+   Copyright (C) 2002, 2006, Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package javax.swing;
+
+import java.util.Arrays;
+
+/**
+ * A sequence of values that represent the dimensions (widths or heights) of
+ * some collection of items (for example, the widths of the columns in a table).
+ *
+ * @author      Andrew Selkirk
+ */
+public class SizeSequence
+{
+  // TODO: Sun's API specification for this class contains an implementation
+  // note regarding the encoding for the element sizes.  We currently use the
+  // simple size encoding but we should look at improving this.
+
+  /** Storage for the element sizes. */
+  private int[] sizes;
+
+  /**
+   * Creates a new empty <code>SizeSequence</code> instance.
+   */
+  public SizeSequence()
+  {
+    sizes = new int[0];
+  }
+
+  /**
+   * Creates a new <code>SizeSequence</code> instance with the specified number
+   * of elements, each having a size of 0.
+   *
+   * @param numEntries  the number of elements.
+   */
+  public SizeSequence(int numEntries)
+  {
+    this(numEntries, 0);
+  }
+
+  /**
+   * Creates a new <code>SizeSequence</code> instance with the specified number
+   * of elements all having the same size (<code>value</code>).
+   *
+   * @param numEntries  the number of elements.
+   * @param value  the value for each element.
+   */
+  public SizeSequence(int numEntries, int value)
+  {
+    sizes = new int[numEntries];
+    Arrays.fill(sizes, value);
+  }
+
+  /**
+   * Creates a new <code>SizeSequence</code> instance using the specified
+   * element sizes.
+   *
+   * @param sizes  the element sizes (<code>null</code> not permitted).
+   */
+  public SizeSequence(int[] sizes)
+  {
+    this.sizes = (int[]) sizes.clone();
+  }
+
+  /**
+   * Sets the size of the element at the specified index.
+   *
+   * @param index  the index.
+   * @param size  the size.
+   */
+  public void setSize(int index, int size)
+  {
+    if (index >= 0 && index < sizes.length)
+      sizes[index] = size;
+  }
+
+  /**
+   * Returns the index of the element that contains the specified position.
+   *
+   * @param position  the position.
+   *
+   * @return The index of the element that contains the specified position.
+   */
+  public int getIndex(int position)
+  {
+    int i = 0;
+    int runningTotal = 0;
+    while (i < sizes.length && position >= runningTotal + sizes[i])
+      {
+        runningTotal += sizes[i];
+        i++;
+      }
+    return i;
+  }
+
+  /**
+   * Returns the size of the specified element, or 0 if the element index is
+   * outside the defined range.
+   *
+   * @param index  the element index.
+   *
+   * @return The size of the specified element, or 0 if the element index is
+   *     outside the defined range.
+   */
+  public int getSize(int index)
+  {
+    if (index < 0 || index >= sizes.length)
+      return 0;
+    return sizes[index];
+  }
+
+  /**
+   * Sets the sizes for the elements in the sequence.
+   *
+   * @param sizes  the element sizes (<code>null</code> not permitted).
+   */
+  public void setSizes(int[] sizes)
+  {
+    this.sizes = (int[]) sizes.clone();
+  }
+
+  /**
+   * Returns an array containing the sizes for all the elements in the sequence.
+   *
+   * @return The element sizes.
+   */
+  public int[] getSizes()
+  {
+    return (int[]) sizes.clone();
+  }
+
+  /**
+   * Returns the position of the specified element.
+   *
+   * @param index  the element index.
+   *
+   * @return The position.
+   */
+  public int getPosition(int index)
+  {
+    int position;
+    int loop;
+    position = 0;
+    for (loop = 0; loop < index; loop++)
+      position += sizes[loop];
+    return position;
+
+  }
+
+  /**
+   * Inserts new entries into the sequence at the <code>start</code> position.
+   * There are <code>length</code> new entries each having the specified
+   * <code>value</code>.
+   *
+   * @param start  the start element.
+   * @param length  the number of elements to insert.
+   * @param value  the size for each of the new elements.
+   */
+  public void insertEntries(int start, int length, int value)
+  {
+    int[] newSizes = new int[sizes.length + length];
+    System.arraycopy(sizes, 0, newSizes, 0, start);
+    for (int i = start; i < start + length; i++)
+      newSizes[i] = value;
+    System.arraycopy(sizes, start, newSizes, start + length,
+                     sizes.length - start);
+    sizes = newSizes;
+  }
+
+  /**
+   * Removes the element(s) at index <code>start</code> (the number of elements
+   * removed is <code>length</code>).
+   *
+   * @param start  the index of the first element to remove.
+   * @param length  the number of elements to remove.
+   */
+  public void removeEntries(int start, int length)
+  {
+    // Sanity check.
+    if ((start + length) > sizes.length)
+      throw new IllegalArgumentException("Specified start/length that "
+                                         + "is greater than available sizes");
+
+    int[] newSizes = new int[sizes.length - length];
+    System.arraycopy(sizes, 0, newSizes, 0, start);
+    System.arraycopy(sizes, start + length, newSizes, start,
+                     sizes.length - start - length);
+    sizes = newSizes;
+  }
+}