Making events for arbitrary HTML still work in tree cells.

content/shared/public/nsXULAtoms.h

@@ -59,6 +59,7 @@ public:
   static nsIAtom* treecell; // A cell in the tree view
   static nsIAtom* treechildren; // The children of an item in the tree viw
   static nsIAtom* treeindentation; // Specifies that the indentation for the level should occur here.
+  static nsIAtom* treeallowevents; // Lets events be handled on the cell contents.
 
   static nsIAtom* widget;
   static nsIAtom* window;

content/shared/src/nsXULAtoms.cpp

@@ -41,6 +41,7 @@ nsIAtom* nsXULAtoms::treerow;
 nsIAtom* nsXULAtoms::treecell;
 nsIAtom* nsXULAtoms::treechildren;
 nsIAtom* nsXULAtoms::treeindentation;
+nsIAtom* nsXULAtoms::treeallowevents;
 
 nsIAtom* nsXULAtoms::widget;
 nsIAtom* nsXULAtoms::window;
@@ -77,6 +78,7 @@ void nsXULAtoms::AddrefAtoms() {
 	treeitem = NS_NewAtom("treeitem");
 	treechildren = NS_NewAtom("treechildren");
 	treeindentation = NS_NewAtom("treeindentation");
+    treeallowevents = NS_NewAtom("treeallowevents");
 
     widget = NS_NewAtom("widget");
     window = NS_NewAtom("window");
@@ -104,6 +106,7 @@ void nsXULAtoms::ReleaseAtoms() {
 	NS_RELEASE(treeitem);
 	NS_RELEASE(treechildren);
 	NS_RELEASE(treeindentation);
+    NS_RELEASE(treeallowevents);
 
 	NS_RELEASE(widget);
     NS_RELEASE(window);

layout/xul/base/src/nsTreeCellFrame.cpp

@@ -65,9 +65,9 @@ static void ForceDrawFrame(nsIFrame * aFrame)
 // Creates a new tree cell frame
 //
 nsresult
-NS_NewTreeCellFrame (nsIFrame*& aNewFrame)
+NS_NewTreeCellFrame (nsIFrame*& aNewFrame, PRBool allowEvents)
 {
-  nsTreeCellFrame* theFrame = new nsTreeCellFrame;
+  nsTreeCellFrame* theFrame = new nsTreeCellFrame(allowEvents);
   if (theFrame == nsnull)
     return NS_ERROR_OUT_OF_MEMORY;
 
@@ -78,8 +78,8 @@ NS_NewTreeCellFrame (nsIFrame*& aNewFrame)
 
 
 // Constructor
-nsTreeCellFrame::nsTreeCellFrame()
-:nsTableCellFrame() { mIsHeader = PR_FALSE; mBeenReflowed = PR_FALSE; }
+nsTreeCellFrame::nsTreeCellFrame(PRBool allowEvents)
+:nsTableCellFrame() { mAllowEvents = allowEvents; mIsHeader = PR_FALSE; mBeenReflowed = PR_FALSE; }
 
 // Destructor
 nsTreeCellFrame::~nsTreeCellFrame()
@@ -165,8 +165,15 @@ NS_IMETHODIMP
 nsTreeCellFrame::GetFrameForPoint(const nsPoint& aPoint, 
                                   nsIFrame**     aFrame)
 {
-  *aFrame = this; // Capture all events so that we can perform selection and expand/collapse.
-  return NS_OK;
+  if (mAllowEvents)
+  {
+	  return nsTableCellFrame::GetFrameForPoint(aPoint, aFrame);
+  }
+  else
+  {
+    *aFrame = this; // Capture all events so that we can perform selection and expand/collapse.
+    return NS_OK;
+  }
 }
 
 NS_IMETHODIMP 

layout/xul/base/src/nsTreeCellFrame.h

@@ -24,7 +24,7 @@ class nsTreeFrame;
 class nsTreeCellFrame : public nsTableCellFrame
 {
 public:
-  friend nsresult NS_NewTreeCellFrame(nsIFrame*& aNewFrame);
+  friend nsresult NS_NewTreeCellFrame(nsIFrame*& aNewFrame, PRBool allowEvents);
 
   NS_IMETHOD GetFrameForPoint(const nsPoint& aPoint, // Overridden to capture events
                               nsIFrame**     aFrame);
@@ -46,7 +46,7 @@ public:
   void Select(nsIPresContext& presContext, PRBool isSelected);
 
 protected:
-  nsTreeCellFrame();
+  nsTreeCellFrame(PRBool allowEvents);
   virtual ~nsTreeCellFrame();
 
   nsresult HandleMouseDownEvent(nsIPresContext& aPresContext, 
@@ -64,6 +64,7 @@ protected:
   nsIStyleContext* mSelectedContext; // The style context to use when the tree item is selected
   nsIStyleContext* mNormalContext; // The style context to use normally.
   nsTreeFrame* mTreeFrame; // Our parent tree frame.
+  PRBool mAllowEvents; // Whether we let events go through.
 
   PRBool mBeenReflowed; // Hack for now.
 }; // class nsTableCellFrame

layout/xul/content/src/nsXULAtoms.cpp

@@ -41,6 +41,7 @@ nsIAtom* nsXULAtoms::treerow;
 nsIAtom* nsXULAtoms::treecell;
 nsIAtom* nsXULAtoms::treechildren;
 nsIAtom* nsXULAtoms::treeindentation;
+nsIAtom* nsXULAtoms::treeallowevents;
 
 nsIAtom* nsXULAtoms::widget;
 nsIAtom* nsXULAtoms::window;
@@ -77,6 +78,7 @@ void nsXULAtoms::AddrefAtoms() {
 	treeitem = NS_NewAtom("treeitem");
 	treechildren = NS_NewAtom("treechildren");
 	treeindentation = NS_NewAtom("treeindentation");
+    treeallowevents = NS_NewAtom("treeallowevents");
 
     widget = NS_NewAtom("widget");
     window = NS_NewAtom("window");
@@ -104,6 +106,7 @@ void nsXULAtoms::ReleaseAtoms() {
 	NS_RELEASE(treeitem);
 	NS_RELEASE(treechildren);
 	NS_RELEASE(treeindentation);
+    NS_RELEASE(treeallowevents);
 
 	NS_RELEASE(widget);
     NS_RELEASE(window);

layout/xul/content/src/nsXULAtoms.h

@@ -59,6 +59,7 @@ public:
   static nsIAtom* treecell; // A cell in the tree view
   static nsIAtom* treechildren; // The children of an item in the tree viw
   static nsIAtom* treeindentation; // Specifies that the indentation for the level should occur here.
+  static nsIAtom* treeallowevents; // Lets events be handled on the cell contents.
 
   static nsIAtom* widget;
   static nsIAtom* window;