Bug fixes and small improvements:

        - http/Connection: fix a leak in websocket sockets (file descriptors)
	- WLayout: added a clear() method which removes all contents
	- WDataSeries: fix setLabelColor() being ignored
	- Dbo/backend/Postgres: set client encoding to UTF8
	- WTable: added moveRow() and moveColumn() methods
	- WTableView: fix setColumnHidden() with headerColumns()
	- WebSession: use baseURL property for self-referencing URLs

Author: Koen Deforche

Changelog

@@ -1,3 +1,18 @@
+26-04-2011:
+	* http/Connection: fix a leak in websocket sockets (file descriptors)
+
+	* WLayout: added a clear() method which removes all contents
+
+	* WDataSeries: fix setLabelColor() being ignored
+
+	* Dbo/backend/Postgres: set client encoding to UTF8
+
+	* WTable: added moveRow() and moveColumn() methods
+
+	* WTableView: fix setColumnHidden() with headerColumns()
+
+	* WebSession: use baseURL property for self-referencing URLs
+
 14-04-2011:
 	* WAbstractArea: fix anchor not being deleted
 

src/Wt/Chart/WDataSeries.C

@@ -130,6 +130,8 @@ WColor WDataSeries::labelColor() const
 void WDataSeries::setLabelColor(const WColor& color)
 {
   set(labelColor_, color);
+
+  customFlags_ |= CustomLabelColor;
 }
 
 void WDataSeries::setFillRange(FillRangeType fillRange)

src/Wt/Dbo/backend/Postgres.C

@@ -542,6 +542,8 @@ bool Postgres::connect(const std::string& db)
     throw PostgresException("Could not connect to: " + error);
   }
 
+  PQsetClientEncoding(conn_, "UTF8");
+
   return true;
 }
 

src/Wt/WLayout

@@ -165,6 +165,13 @@ public:
   int getContentsMargin(Side side) const;
 #endif // WT_TARGET_JAVA
 
+  /*! \brief Removes and deletes all child widgets and nested layouts.
+   *
+   * This is similar to WContainerWidget::clear(), with the exception that
+   * the layout itself is not deleted.
+   */
+  virtual void clear();
+
 protected:
   /*! \brief Create a layout.
    */

src/Wt/WLayout.C

@@ -11,6 +11,8 @@
 
 #include "WtException.h"
 
+#include <set>
+
 namespace Wt {
 
 WLayout::WLayout()
@@ -185,7 +187,7 @@ void WLayout::setParentLayout(WLayout *layout)
   if (layout)
     layout->addChild(this);
   else
-    setParent(0);
+    parent()->removeChild(this);
 }
 
 WLayout *WLayout::parentLayout() const
@@ -204,4 +206,25 @@ void WLayout::setLayoutHint(const std::string& name, const std::string& value)
   }
 }
 
+void WLayout::clear()
+{
+  while (count()) {
+    WLayoutItem *item = itemAt(count() - 1);
+
+    if (item) {
+      WWidget* widget = 0;
+
+      if (item->layout())
+	item->layout()->clear();
+      else
+	widget = item->widget();
+
+      removeItem(item);
+      delete item;
+
+      delete widget;
+    }
+  }
+}
+
 }

src/Wt/WTable

@@ -154,6 +154,24 @@ public:
    */
   int headerCount(Orientation orientation = Horizontal);
 
+  /*! \brief Move a table row from its original position to a new position.
+   *
+   * The table expands automatically when to is beyond the current 
+   * table dimensions.
+   *
+   * \sa moveColumn()
+   */
+  void moveRow(int from, int to);
+
+  /*! \brief Move a table column from its original position to a new position.
+   *
+   * The table expands automatically when to is beyond the current 
+   * table dimensions.
+   *
+   * \sa moveRow()
+   */
+  void moveColumn(int from, int to);
+
 private:
   static const int BIT_GRID_CHANGED = 0;
   static const int BIT_COLUMNS_CHANGED = 1;

src/Wt/WTable.C

@@ -10,7 +10,9 @@
 #include "Wt/WEnvironment"
 #include "Wt/WTable"
 #include "Wt/WTableCell"
+#include "Wt/WTableRow"
 #include "DomElement.h"
+#include "Utils.h"
 
 namespace Wt {
 
@@ -401,4 +403,45 @@ WTableRow::TableData& WTable::itemAt(int row, int column)
   return rows_[row]->cells_[column];
 }
 
+void WTable::moveRow(int from, int to)
+{
+  if (from < 0 || from >= (int)rows_.size())
+    throw std::logic_error("WTable::moveRow: the from index is not within the "
+			   "current table dimensions.");
+
+  WTableRow* from_tr = rowAt(from);
+
+  Utils::erase(rows_, from_tr);
+  if (to > (int)rows_.size())
+    rowAt(to);
+  rows_.insert(rows_.begin() + to, from_tr);
+
+  flags_.set(BIT_GRID_CHANGED);
+  repaint(RepaintInnerHtml);
+}
+
+void WTable::moveColumn(int from, int to)
+{
+  if (from < 0 || from >= (int)columns_.size())
+    throw std::logic_error("WTable::moveColumn: the from index is not within "
+			   "the current table dimensions.");
+
+  WTableColumn* from_tc = columnAt(from);
+
+  Utils::erase(columns_, from_tc);
+  if (to > (int)columns_.size())
+    columnAt(to);
+  columns_.insert(columns_.begin() + to, from_tc);
+
+  for (unsigned i = 0; i < rows_.size(); i++) {
+    std::vector<WTableRow::TableData>& cells = rows_[i]->cells_;
+    WTableRow::TableData cell = cells[from];
+    cells.erase(cells.begin() + from);
+    cells.insert(cells.begin() + to, cell);
+  }
+
+  flags_.set(BIT_GRID_CHANGED);
+  repaint(RepaintInnerHtml);
+}
+
 }

src/Wt/WTableView.C

@@ -831,7 +831,8 @@ void WTableView::setColumnHidden(int column, bool hidden)
     if (renderState_ >= NeedRerenderHeader)
       return;
 
-    WWidget *hc = headers_->widget(column);
+    WWidget *hc = headerWidget(column);
+
     if (!ajaxMode())
       hc->parent()->setHidden(hidden);
     else

src/Wt/WText.C

@@ -214,6 +214,8 @@ void WText::render(WFlags<RenderFlag> flags)
 {
   if (textChanged_)
     autoAdjustInline();
+
+  WInteractWidget::render(flags);
 }
 
 void WText::refresh()

src/Wt/WWebWidget.C

@@ -843,10 +843,14 @@ void WWebWidget::setJavaScriptMember(const std::string& name,
     else
       return;
   } else {
-    OtherImpl::Member m;
-    m.name = name;
-    m.value = value;
-    members.push_back(m);
+    if (index == -1) {
+      OtherImpl::Member m;
+      m.name = name;
+      m.value = value;
+      members.push_back(m);
+    } else {
+      members[index].value = value;
+    }
   }
 
   if (!otherImpl_->jsMembersSet_)