2009-01-10 Darin Adler <darin@apple.com>

        Reviewed by Sam Weinig.

        <rdar://problem/5845089> REGRESSION (r30044): Mail custom stationery missing images
        because of change to -[HTMLObjectElement data]

        * WebView/WebView.mm:
        (-[WebView _commonInitializationWithFrameName:groupName:usesDocumentViews:]): Added a thread
        violation check because I saw this being done off the main thread while testing Mail, and it
        caused problems. Put all the one time initialization under a single guard to make things just
        a little faster other times, and to make it clearer which things are one-time. Added a call to
        the new patchMailRemoveAttributesMethod function.
        (-[WebView initWithFrame:frameName:groupName:]): Added a thread violation check here too,
        because I assumed it would be slightly better to have a public method name in the violation
        message. This calls commonInitialization later, so it will hit that one eventually.
        (objectElementDataAttribute): Added. Just returns the value of the "data" attribute.
        (recursivelyRemoveMailAttributes): Added. Patch to an internal Mail method that in turn patches
        a WebKit method and removes the patch again on the way out.
        (patchMailRemoveAttributesMethod): Added. On Leopard only, checks the Mail version, and then
        applies the patch that fixes this bug.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@39778 268f45cc-cd09-0410-ab3c-d52691b4dbfc

diff --git a/WebKit/mac/ChangeLog b/WebKit/mac/ChangeLog
index 457f502..7473919 100644 (file)
--- a/WebKit/mac/ChangeLog
+++ b/WebKit/mac/ChangeLog
@@ -1,3 +1,25 @@
+2009-01-10  Darin Adler  <darin@apple.com>
+
+        Reviewed by Sam Weinig.
+
+        <rdar://problem/5845089> REGRESSION (r30044): Mail custom stationery missing images
+        because of change to -[HTMLObjectElement data]
+
+        * WebView/WebView.mm:
+        (-[WebView _commonInitializationWithFrameName:groupName:usesDocumentViews:]): Added a thread
+        violation check because I saw this being done off the main thread while testing Mail, and it
+        caused problems. Put all the one time initialization under a single guard to make things just
+        a little faster other times, and to make it clearer which things are one-time. Added a call to
+        the new patchMailRemoveAttributesMethod function.
+        (-[WebView initWithFrame:frameName:groupName:]): Added a thread violation check here too,
+        because I assumed it would be slightly better to have a public method name in the violation
+        message. This calls commonInitialization later, so it will hit that one eventually.
+        (objectElementDataAttribute): Added. Just returns the value of the "data" attribute.
+        (recursivelyRemoveMailAttributes): Added. Patch to an internal Mail method that in turn patches
+        a WebKit method and removes the patch again on the way out.
+        (patchMailRemoveAttributesMethod): Added. On Leopard only, checks the Mail version, and then
+        applies the patch that fixes this bug.
+
 2009-01-09  Dan Bernstein  <mitz@apple.com>
 
         Reviewed by Darin Adler.

diff --git a/WebKit/mac/WebView/WebView.mm b/WebKit/mac/WebView/WebView.mm
index f895e19..210dfab 100644 (file)
--- a/WebKit/mac/WebView/WebView.mm
+++ b/WebKit/mac/WebView/WebView.mm
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2006 David Smith (catfish.man@gmail.com)
  *
  * Redistribution and use in source and binary forms, with or without
@@ -120,6 +120,7 @@
 #import <WebCore/SelectionController.h>
 #import <WebCore/Settings.h>
 #import <WebCore/TextResourceDecoder.h>
+#import <WebCore/ThreadCheck.h>
 #import <WebCore/WebCoreObjCExtras.h>
 #import <WebCore/WebCoreTextRenderer.h>
 #import <WebCore/WebCoreView.h>
@@ -421,6 +422,8 @@ static const char webViewIsOpen[] = "At least one WebView is still open.";
 @interface WebView (WebCallDelegateFunctions)
 @end
 
+static void patchMailRemoveAttributesMethod();
+
 NSString *WebElementDOMNodeKey =            @"WebElementDOMNode";
 NSString *WebElementFrameKey =              @"WebElementFrame";
 NSString *WebElementImageKey =              @"WebElementImage";
@@ -675,6 +678,8 @@ static void WebKitInitializeApplicationCachePathIfNecessary()
 
 - (void)_commonInitializationWithFrameName:(NSString *)frameName groupName:(NSString *)groupName usesDocumentViews:(BOOL)usesDocumentViews
 {
+    WebCoreThreadViolationCheck();
+
 #ifndef NDEBUG
     WTF::RefCountedLeakCounter::suppressMessages(webViewIsOpen);
 #endif
@@ -699,12 +704,17 @@ static void WebKitInitializeApplicationCachePathIfNecessary()
         [frameView release];
     }
 
-    WebKitInitializeLoggingChannelsIfNecessary();
-    WebCore::InitializeLoggingChannelsIfNecessary();
-    [WebHistoryItem initWindowWatcherIfNecessary];
-    WebKitInitializeDatabasesIfNecessary();
-    WebKitInitializeApplicationCachePathIfNecessary();
-    
+    static bool didOneTimeInitialization = false;
+    if (!didOneTimeInitialization) {
+        WebKitInitializeLoggingChannelsIfNecessary();
+        WebCore::InitializeLoggingChannelsIfNecessary();
+        [WebHistoryItem initWindowWatcherIfNecessary];
+        WebKitInitializeDatabasesIfNecessary();
+        WebKitInitializeApplicationCachePathIfNecessary();
+        patchMailRemoveAttributesMethod();
+        didOneTimeInitialization = true;
+    }
+
     _private->page = new Page(new WebChromeClient(self), new WebContextMenuClient(self), new WebEditorClient(self), new WebDragClient(self), new WebInspectorClient(self));
 
     _private->page->settings()->setLocalStorageDatabasePath([[self preferences] _localStorageDatabasePath]);
@@ -2245,6 +2255,7 @@ WebFrameLoadDelegateImplementationCache* WebViewGetFrameLoadDelegateImplementati
 
 - (id)initWithFrame:(NSRect)f frameName:(NSString *)frameName groupName:(NSString *)groupName
 {
+    WebCoreThreadViolationCheck();
     return [self _initWithFrame:f frameName:frameName groupName:groupName usesDocumentViews:YES];
 }
 
@@ -5306,3 +5317,39 @@ BOOL CallFormDelegateReturningBoolean(BOOL result, WebView *self, SEL selector,
 }
 
 @end
+
+#ifdef BUILDING_ON_LEOPARD
+
+static IMP originalRecursivelyRemoveMailAttributesImp;
+
+static id objectElementDataAttribute(DOMHTMLObjectElement *self, SEL)
+{
+    return [self getAttribute:@"data"];
+}
+
+static void recursivelyRemoveMailAttributes(DOMNode *self, SEL selector, BOOL a, BOOL b, BOOL c)
+{
+    // While inside this Mail function, change the behavior of -[DOMHTMLObjectElement data] back to what it used to be
+    // before we fixed a bug in it (see http://trac.webkit.org/changeset/30044 for that change).
+
+    // It's a little bit strange to patch a method defined by WebKit, but it helps keep this workaround self-contained.
+
+    Method methodToPatch = class_getInstanceMethod(objc_getRequiredClass("DOMHTMLObjectElement"), @selector(data));
+    IMP originalDataImp = method_setImplementation(methodToPatch, reinterpret_cast<IMP>(objectElementDataAttribute));
+    originalRecursivelyRemoveMailAttributesImp(self, selector, a, b, c);
+    method_setImplementation(methodToPatch, originalDataImp);
+}
+
+#endif
+
+static void patchMailRemoveAttributesMethod()
+{
+#ifdef BUILDING_ON_LEOPARD
+    if (!WKAppVersionCheckLessThan(@"com.apple.mail", -1, 4.0))
+        return;
+    Method methodToPatch = class_getInstanceMethod(objc_getRequiredClass("DOMNode"), @selector(recursivelyRemoveMailAttributes:convertObjectsToImages:convertEditableElements:));
+    if (!methodToPatch)
+        return;
+    originalRecursivelyRemoveMailAttributesImp = method_setImplementation(methodToPatch, reinterpret_cast<IMP>(recursivelyRemoveMailAttributes));
+#endif
+}