Bug 300030: Move intrinsic width computation out of nsIFrame::Reflow and into its own methods on nsIFrame. Replace reflow reasons, types, and commands with dirty bits/notifications. Thanks to bzbarsky for almost all of the HTML form controls (mozilla/layout/forms) changes, and many others for help testing and patching. For detailed commit logs, see REFLOW_YYYYMMDD_BRANCH, where YYYYMMDD is one of 20061031, 20060830, 20060603, 20060302, 20060119, 20051011, 20050804, 20050429, 20050315, 20050111, and 20041213.

layout/forms/nsHTMLButtonControlFrame.h

@@ -71,6 +71,15 @@ public:
                               const nsRect&           aDirtyRect,
                               const nsDisplayListSet& aLists);
 
+  virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext);
+
+  virtual nscoord GetPrefWidth(nsIRenderingContext *aRenderingContext);
+
+  // Differs from GetMinWidth in that it allows one to specify whether
+  // to fall back on 0 for the min width if we have a specified width.
+  nscoord DoGetMinWidth(nsIRenderingContext *aRenderingContext,
+                        PRBool aZeroIfWidthSpecified);
+  
   NS_IMETHOD Reflow(nsPresContext*          aPresContext,
                     nsHTMLReflowMetrics&     aDesiredSize,
                     const nsHTMLReflowState& aReflowState,
@@ -122,6 +131,8 @@ public:
     return GetFirstChild(nsnull)->GetContentInsertionFrame();
   }
 
+  virtual PRBool IsFrameOfType(PRUint32 aFlags) const;
+
 protected:
   virtual PRBool IsReset(PRInt32 type);
   virtual PRBool IsSubmit(PRInt32 type);
@@ -129,8 +140,6 @@ protected:
                             nsHTMLReflowMetrics& aDesiredSize,
                             const nsHTMLReflowState& aReflowState,
                             nsIFrame* aFirstKid,
-                            const nsSize& aAvailSize,
-                            nsReflowReason aReason,
                             nsMargin aFocusPadding,
                             nsReflowStatus& aStatus);
 
@@ -139,11 +148,6 @@ protected:
 
   PRIntn GetSkipSides() const;
   nsButtonFrameRenderer mRenderer;
-
-  //Resize Reflow OpitmizationSize;
-  nsSize                mCacheSize;
-  nscoord               mCachedAscent;
-  nscoord               mCachedMaxElementWidth;
 };
 
 #endif