bug 1305402 - add new IPC messages needed for AtkTableCell interface r=davidb

To implement the interface with 1 IPC message per method we need these new
messages.

accessible/ipc/ProxyAccessibleShared.h

@@ -175,10 +175,15 @@ uint32_t ColIdx();
 
 uint32_t RowIdx();
 
+void GetPosition(uint32_t* aColIdx, uint32_t* aRowIdx);
+
 uint32_t ColExtent();
 
 uint32_t RowExtent();
 
+void GetColRowExtents(uint32_t* aColIdx, uint32_t* aRowIdx,
+                      uint32_t* aColExtent, uint32_t* aRowExtent);
+
 void ColHeaderCells(nsTArray<ProxyAccessible*>* aCells);
 
 void RowHeaderCells(nsTArray<ProxyAccessible*>* aCells);

accessible/ipc/other/DocAccessibleChild.cpp

@@ -951,6 +951,41 @@ DocAccessibleChild::RecvRowIdx(const uint64_t& aID,
   return true;
 }
 
+bool
+DocAccessibleChild::RecvGetPosition(const uint64_t& aID,
+                               uint32_t* aColIdx, uint32_t* aRowIdx)
+{
+  *aColIdx = 0;
+  *aRowIdx = 0;
+  TableCellAccessible* acc = IdToTableCellAccessible(aID);
+  if (acc) {
+    *aColIdx = acc->ColIdx();
+    *aRowIdx = acc->RowIdx();
+  }
+
+  return true;
+}
+
+bool
+DocAccessibleChild::RecvGetColRowExtents(const uint64_t& aID,
+                                         uint32_t* aColIdx, uint32_t* aRowIdx,
+                                         uint32_t* aColExtent, uint32_t* aRowExtent)
+{
+  *aColIdx = 0;
+  *aRowIdx = 0;
+  *aColExtent = 0;
+  *aRowExtent = 0;
+  TableCellAccessible* acc = IdToTableCellAccessible(aID);
+  if (acc) {
+    *aColIdx = acc->ColIdx();
+    *aRowIdx = acc->RowIdx();
+    *aColExtent = acc->ColExtent();
+    *aRowExtent = acc->RowExtent();
+  }
+
+  return true;
+}
+
 bool
 DocAccessibleChild::RecvColExtent(const uint64_t& aID,
                                   uint32_t* aExtent)

accessible/ipc/other/DocAccessibleChild.h

@@ -259,6 +259,13 @@ public:
 
   virtual bool RecvColExtent(const uint64_t& aID, uint32_t* aExtent) override;
 
+  virtual bool RecvGetPosition(const uint64_t& aID,
+                               uint32_t* aColIdx, uint32_t* aRowIdx) override;
+
+  virtual bool RecvGetColRowExtents(const uint64_t& aID,
+                                  uint32_t* aColIdx, uint32_t* aRowIdx,
+                                  uint32_t* aColExtent, uint32_t* aRowExtent) override;
+
   virtual bool RecvRowExtent(const uint64_t& aID, uint32_t* aExtent) override;
 
   virtual bool RecvColHeaderCells(const uint64_t& aID,

accessible/ipc/other/PDocAccessible.ipdl

@@ -173,8 +173,11 @@ child:
   nested(inside_sync) sync TableOfACell(uint64_t aID) returns(uint64_t aTableID, bool aOk);
   nested(inside_sync) sync ColIdx(uint64_t aID) returns(uint32_t aIndex);
   nested(inside_sync) sync RowIdx(uint64_t aID) returns(uint32_t aIndex);
+  nested(inside_sync) sync GetPosition(uint64_t aID) returns(uint32_t aRow, uint32_t aCol);
   nested(inside_sync) sync ColExtent(uint64_t aID) returns(uint32_t aExtent);
   nested(inside_sync) sync RowExtent(uint64_t aID) returns(uint32_t aExtent);
+  nested(inside_sync) sync GetColRowExtents(uint64_t aID)
+    returns(uint32_t aCol, uint32_t aRow, uint32_t aColExtent, uint32_t aRowExtent);
   nested(inside_sync) sync ColHeaderCells(uint64_t aID) returns(uint64_t[] aCells);
   nested(inside_sync) sync RowHeaderCells(uint64_t aID) returns(uint64_t[] aCells);
   nested(inside_sync) sync IsCellSelected(uint64_t aID) returns(bool aSelected);

accessible/ipc/other/ProxyAccessible.cpp

@@ -517,6 +517,19 @@ ProxyAccessible::RowIdx()
   return index;
 }
 
+void
+ProxyAccessible::GetColRowExtents(uint32_t* aColIdx, uint32_t* aRowIdx,
+                                  uint32_t* aColExtent, uint32_t* aRowExtent)
+{
+  mDoc->SendGetColRowExtents(mID, aColIdx, aRowIdx, aColExtent, aRowExtent);
+}
+
+void
+ProxyAccessible::GetPosition(uint32_t* aColIdx, uint32_t* aRowIdx)
+{
+  mDoc->SendGetPosition(mID, aColIdx, aRowIdx);
+}
+
 uint32_t
 ProxyAccessible::ColExtent()
 {