added look and feel accessor to pres context

layout/base/nsPresContext.cpp

@@ -36,6 +36,9 @@
 #include "nsIDocument.h"
 #include "nsIStyleContext.h"
 #include "nsLayoutAtoms.h"
+#include "nsILookAndFeel.h"
+#include "nsWidgetsCID.h"
+#include "nsIComponentManager.h"
 #ifdef _WIN32
 #include <windows.h>
 #endif
@@ -53,6 +56,8 @@ PrefChangedCallback(const char* aPrefName, void* instance_data)
 }
 
 static NS_DEFINE_IID(kIPresContextIID, NS_IPRESCONTEXT_IID);
+static NS_DEFINE_IID(kLookAndFeelCID,  NS_LOOKANDFEEL_CID);
+static NS_DEFINE_IID(kILookAndFeelIID, NS_ILOOKANDFEEL_IID);
 
 nsPresContext::nsPresContext()
   : mDefaultFont("Times", NS_FONT_STYLE_NORMAL,
@@ -76,7 +81,8 @@ nsPresContext::nsPresContext()
 #else
   mWidgetRenderingMode = eWidgetRendering_Gfx; 
 #endif
- 
+
+  mLookAndFeel = nsnull;
 
 #ifdef _WIN32
   // XXX This needs to be elsewhere, e.g., part of nsIDeviceContext
@@ -106,6 +112,8 @@ nsPresContext::~nsPresContext()
   if (mEventManager)
     mEventManager->SetPresContext(nsnull);   // unclear if this is needed, but can't hurt
 
+  NS_IF_RELEASE(mLookAndFeel);
+
   // Unregister preference callbacks
   if (mPrefs) {
     mPrefs->UnregisterCallback("browser.", PrefChangedCallback, (void*)this);
@@ -368,6 +376,28 @@ nsPresContext::SetWidgetRenderingMode(nsWidgetRendering aMode)
 }
 
 
+NS_IMETHODIMP
+nsPresContext::GetLookAndFeel(nsILookAndFeel** aLookAndFeel)
+{
+  NS_PRECONDITION(nsnull != aLookAndFeel, "null ptr");
+  if (nsnull == aLookAndFeel) {
+    return NS_ERROR_NULL_POINTER;
+  }
+  nsresult result = NS_OK;
+  if (! mLookAndFeel) {
+    result = nsComponentManager::CreateInstance(kLookAndFeelCID, nsnull, 
+                                                kILookAndFeelIID, (void**)&mLookAndFeel);
+    if (NS_FAILED(result)) {
+      mLookAndFeel = nsnull;
+    }
+  }
+  NS_IF_ADDREF(mLookAndFeel);
+  *aLookAndFeel = mLookAndFeel;
+  return result;
+}
+
+
+
 NS_IMETHODIMP
 nsPresContext::GetBaseURL(nsIURI** aResult)
 {

layout/base/nsPresContext.h

@@ -41,6 +41,7 @@ class nsIAtom;
 class nsString;
 class nsIEventStateManager;
 class nsIURI;
+class nsILookAndFeel;
 
 #define NS_IPRESCONTEXT_IID   \
 { 0x0a5d12e0, 0x944e, 0x11d1, \
@@ -108,6 +109,11 @@ public:
   NS_IMETHOD GetWidgetRenderingMode(nsWidgetRendering* aModeResult) = 0;
   NS_IMETHOD SetWidgetRenderingMode(nsWidgetRendering aMode) = 0;
 
+  /**
+   * Get look and feel object
+   */
+  NS_IMETHOD GetLookAndFeel(nsILookAndFeel** aLookAndFeel) = 0;
+
   /** 
    * Get base url for presentation
    */

layout/base/public/nsIPresContext.h

@@ -41,6 +41,7 @@ class nsIAtom;
 class nsString;
 class nsIEventStateManager;
 class nsIURI;
+class nsILookAndFeel;
 
 #define NS_IPRESCONTEXT_IID   \
 { 0x0a5d12e0, 0x944e, 0x11d1, \
@@ -108,6 +109,11 @@ public:
   NS_IMETHOD GetWidgetRenderingMode(nsWidgetRendering* aModeResult) = 0;
   NS_IMETHOD SetWidgetRenderingMode(nsWidgetRendering aMode) = 0;
 
+  /**
+   * Get look and feel object
+   */
+  NS_IMETHOD GetLookAndFeel(nsILookAndFeel** aLookAndFeel) = 0;
+
   /** 
    * Get base url for presentation
    */

layout/base/public/nsPresContext.h

@@ -41,6 +41,7 @@ class nsIAtom;
 class nsString;
 class nsIEventStateManager;
 class nsIURI;
+class nsILookAndFeel;
 
 #define NS_IPRESCONTEXT_IID   \
 { 0x0a5d12e0, 0x944e, 0x11d1, \
@@ -108,6 +109,11 @@ public:
   NS_IMETHOD GetWidgetRenderingMode(nsWidgetRendering* aModeResult) = 0;
   NS_IMETHOD SetWidgetRenderingMode(nsWidgetRendering aMode) = 0;
 
+  /**
+   * Get look and feel object
+   */
+  NS_IMETHOD GetLookAndFeel(nsILookAndFeel** aLookAndFeel) = 0;
+
   /** 
    * Get base url for presentation
    */

layout/base/src/nsPresContext.cpp

@@ -36,6 +36,9 @@
 #include "nsIDocument.h"
 #include "nsIStyleContext.h"
 #include "nsLayoutAtoms.h"
+#include "nsILookAndFeel.h"
+#include "nsWidgetsCID.h"
+#include "nsIComponentManager.h"
 #ifdef _WIN32
 #include <windows.h>
 #endif
@@ -53,6 +56,8 @@ PrefChangedCallback(const char* aPrefName, void* instance_data)
 }
 
 static NS_DEFINE_IID(kIPresContextIID, NS_IPRESCONTEXT_IID);
+static NS_DEFINE_IID(kLookAndFeelCID,  NS_LOOKANDFEEL_CID);
+static NS_DEFINE_IID(kILookAndFeelIID, NS_ILOOKANDFEEL_IID);
 
 nsPresContext::nsPresContext()
   : mDefaultFont("Times", NS_FONT_STYLE_NORMAL,
@@ -76,7 +81,8 @@ nsPresContext::nsPresContext()
 #else
   mWidgetRenderingMode = eWidgetRendering_Gfx; 
 #endif
- 
+
+  mLookAndFeel = nsnull;
 
 #ifdef _WIN32
   // XXX This needs to be elsewhere, e.g., part of nsIDeviceContext
@@ -106,6 +112,8 @@ nsPresContext::~nsPresContext()
   if (mEventManager)
     mEventManager->SetPresContext(nsnull);   // unclear if this is needed, but can't hurt
 
+  NS_IF_RELEASE(mLookAndFeel);
+
   // Unregister preference callbacks
   if (mPrefs) {
     mPrefs->UnregisterCallback("browser.", PrefChangedCallback, (void*)this);
@@ -368,6 +376,28 @@ nsPresContext::SetWidgetRenderingMode(nsWidgetRendering aMode)
 }
 
 
+NS_IMETHODIMP
+nsPresContext::GetLookAndFeel(nsILookAndFeel** aLookAndFeel)
+{
+  NS_PRECONDITION(nsnull != aLookAndFeel, "null ptr");
+  if (nsnull == aLookAndFeel) {
+    return NS_ERROR_NULL_POINTER;
+  }
+  nsresult result = NS_OK;
+  if (! mLookAndFeel) {
+    result = nsComponentManager::CreateInstance(kLookAndFeelCID, nsnull, 
+                                                kILookAndFeelIID, (void**)&mLookAndFeel);
+    if (NS_FAILED(result)) {
+      mLookAndFeel = nsnull;
+    }
+  }
+  NS_IF_ADDREF(mLookAndFeel);
+  *aLookAndFeel = mLookAndFeel;
+  return result;
+}
+
+
+
 NS_IMETHODIMP
 nsPresContext::GetBaseURL(nsIURI** aResult)
 {

layout/base/src/nsPresContext.h

@@ -48,6 +48,7 @@ public:
   NS_IMETHOD SetCompatibilityMode(nsCompatibility aMode);
   NS_IMETHOD GetWidgetRenderingMode(nsWidgetRendering* aModeResult);
   NS_IMETHOD SetWidgetRenderingMode(nsWidgetRendering aMode);
+  NS_IMETHOD GetLookAndFeel(nsILookAndFeel** aLookAndFeel);
   NS_IMETHOD GetBaseURL(nsIURI** aURLResult);
   NS_IMETHOD GetMedium(nsIAtom** aMediumResult) = 0;
   NS_IMETHOD ResolveStyleContextFor(nsIContent* aContent,
@@ -131,6 +132,7 @@ protected:
   nsCOMPtr<nsIImageGroup> mImageGroup;
   nsILinkHandler*       mLinkHandler;   // [WEAK]
   nsISupports*          mContainer;     // [WEAK]
+  nsILookAndFeel*       mLookAndFeel;
   nsFont                mDefaultFont;
   nsFont                mDefaultFixedFont;
   PRInt32               mFontScaler;