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1 files changed, 274 insertions, 0 deletions

diff --git a/libjava/classpath/javax/swing/text/html/FrameSetView.java b/libjava/classpath/javax/swing/text/html/FrameSetView.java
new file mode 100644
index 000000000..e3252d79c
--- /dev/null
+++ b/libjava/classpath/javax/swing/text/html/FrameSetView.java
@@ -0,0 +1,274 @@
+/* FrameSetView.java -- Implements HTML frameset
+   Copyright (C) 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.text.html;
+
+import java.util.StringTokenizer;
+
+import javax.swing.text.AttributeSet;
+import javax.swing.text.BoxView;
+import javax.swing.text.Element;
+import javax.swing.text.View;
+import javax.swing.text.ViewFactory;
+
+/**
+ * Implements HTML framesets. This is implemented as a vertical box that
+ * holds the rows of the frameset. Each row is again a horizontal box that
+ * holds the actual columns.
+ */
+public class FrameSetView
+  extends BoxView
+{
+
+  /**
+   * A row of a frameset.
+   */
+  private class FrameSetRow
+    extends BoxView
+  {
+    private int row;
+    FrameSetRow(Element el, int r)
+    {
+      super(el, X_AXIS);
+      row = r;
+    }
+
+    protected void loadChildren(ViewFactory f)
+    {
+      // Load the columns here.
+      Element el = getElement();
+      View[] columns = new View[numViews[X_AXIS]];
+      int offset = row * numViews[X_AXIS];
+      for (int c = 0; c < numViews[X_AXIS]; c++)
+        {
+          Element child = el.getElement(offset + c);
+          columns[c] = f.create(child);
+        }
+      replace(0, 0, columns);
+    }
+
+    protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets,
+                                   int[] spans)
+    {
+      int numRows = numViews[X_AXIS];
+      int[] abs = absolute[X_AXIS];
+      int[] rel = relative[X_AXIS];
+      int[] perc = percent[X_AXIS];
+      layoutViews(targetSpan, axis, offsets, spans, numRows, abs, rel, perc);
+    }
+  }
+
+  /**
+   * Holds the absolute layout information for the views along one axis. The
+   * indices are absolute[axis][index], where axis is either X_AXIS (columns)
+   * or Y_AXIS (rows). Rows or columns that don't have absolute layout have
+   * a -1 in this array.
+   */
+  int[][] absolute;
+
+  /**
+   * Holds the relative (*) layout information for the views along one axis.
+   * The indices are relative[axis][index], where axis is either X_AXIS
+   * (columns) or Y_AXIS (rows). Rows or columns that don't have relative
+   * layout have a Float.NaN in this array.
+   */
+  int[][] relative;
+
+  /**
+   * Holds the relative (%) layout information for the views along one axis.
+   * The indices are relative[axis][index], where axis is either X_AXIS
+   * (columns) or Y_AXIS (rows). Rows or columns that don't have relative
+   * layout have a Float.NaN in this array.
+   *
+   * The percentage is divided by 100 so that we hold the actual fraction here.
+   */
+  int[][] percent;
+
+  /**
+   * The number of children in each direction.
+   */
+  int[] numViews;
+
+  FrameSetView(Element el)
+  {
+    super(el, Y_AXIS);
+    numViews = new int[2];
+    absolute = new int[2][];
+    relative = new int[2][];
+    percent = new int[2][];
+  }
+
+  /**
+   * Loads the children and places them inside the grid.
+   */
+  protected void loadChildren(ViewFactory f)
+  {
+    parseRowsCols();
+    // Set up the rows.
+    View[] rows = new View[numViews[Y_AXIS]];
+    for (int r = 0; r < numViews[Y_AXIS]; r++)
+      {
+        rows[r] = new FrameSetRow(getElement(), r);
+      }
+    replace(0, 0, rows);
+  }
+
+  /**
+   * Parses the rows and cols attributes and sets up the layout info.
+   */
+  private void parseRowsCols()
+  {
+    Element el = getElement();
+    AttributeSet atts = el.getAttributes();
+    String cols = (String) atts.getAttribute(HTML.Attribute.COLS);
+    if (cols == null) // Defaults to '100%' when not specified.
+      cols = "100%";
+    parseLayout(cols, X_AXIS);
+    String rows = (String) atts.getAttribute(HTML.Attribute.ROWS);
+    if (rows == null) // Defaults to '100%' when not specified.
+      rows = "100%";
+    parseLayout(rows, Y_AXIS);
+  }
+
+  /**
+   * Parses the cols or rows attribute and places the layout info in the
+   * appropriate arrays.
+   *
+   * @param att the attributes to parse
+   * @param axis the axis
+   */
+  private void parseLayout(String att, int axis)
+  {
+    StringTokenizer tokens = new StringTokenizer(att, ",");
+    numViews[axis] = tokens.countTokens();
+    absolute[axis] = new int[numViews[axis]];
+    relative[axis] = new int[numViews[axis]];
+    percent[axis] = new int[numViews[axis]];
+    for (int index = 0; tokens.hasMoreTokens(); index++)
+      {
+        String token = tokens.nextToken();
+        int p = token.indexOf('%');
+        int s = token.indexOf('*');
+        if (p != -1)
+          {
+            // Percent value.
+            String number = token.substring(0, p);
+            try
+              {
+                percent[axis][index] = Integer.parseInt(number);
+              }
+            catch (NumberFormatException ex)
+              {
+                // Leave value as 0 then.
+              }
+          }
+        else if (s != -1)
+          {
+            // Star relative value.
+            String number = token.substring(0, s);
+            try
+              {
+                relative[axis][index] = Integer.parseInt(number);
+              }
+            catch (NumberFormatException ex)
+              {
+                // Leave value as 0 then.
+              }
+          }
+        else
+          {
+            // Absolute value.
+            try
+              {
+                absolute[axis][index] = Integer.parseInt(token);
+              }
+            catch (NumberFormatException ex)
+              {
+                // Leave value as 0 then.
+              }
+          }
+      }
+  }
+
+  protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets,
+                                 int[] spans)
+  {
+    int numRows = numViews[Y_AXIS];
+    int[] abs = absolute[Y_AXIS];
+    int[] rel = relative[Y_AXIS];
+    int[] perc = percent[Y_AXIS];
+    layoutViews(targetSpan, axis, offsets, spans, numRows, abs, rel, perc);
+  }
+
+  void layoutViews(int targetSpan, int axis, int[] offsets, int[] spans,
+                   int numViews, int[] abs, int[] rel, int[] perc)
+  {
+    // We need two passes. In the first pass we layout the absolute and
+    // percent values and accumulate the needed space. In the second pass
+    // the relative values are distributed and the offsets are set.
+    int total = 0;
+    int relTotal = 0;
+    for (int i = 0; i < numViews; i++)
+      {
+        if (abs[i] > 0)
+          {
+            spans[i] = abs[i];
+            total += spans[i];
+          }
+        else if (perc[i] > 0)
+          {
+            spans[i] = (targetSpan * perc[i]) / 100;
+            total += spans[i];
+          }
+        else if (rel[i] > 0)
+          {
+            relTotal += rel[i];
+          }
+      }
+    int offs = 0;
+    for (int i = 0; i < numViews; i++)
+      {
+        if (relTotal > 0 && rel[i] > 0)
+          {
+            spans[i] = targetSpan * (rel[i] / relTotal);
+          }
+        offsets[i] = offs;
+        offs += spans[i];
+      }
+  }
+}