Send additional NSUserDefaults over IPC to renderers.

This sends AppleAquaColorVariant, AppleHighlightedTextColor, and
AppleHighlightColor when system colors change.

BUG=534650
R=avi@chromium.org

Review URL: https://codereview.chromium.org/1372243003

Cr-Commit-Position: refs/heads/master@{#351324}

4 files changed, 88 insertions, 0 deletions

diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 9266eeb..b9c9e1b 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -163,6 +163,7 @@
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
+#include "content/renderer/theme_helper_mac.h"
 #include "content/renderer/webscrollbarbehavior_impl_mac.h"
 #endif
 
@@ -1622,6 +1623,7 @@ bool RenderThreadImpl::OnControlMessageReceived(const IPC::Message& msg) {
 #endif
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateScrollbarTheme, OnUpdateScrollbarTheme)
+    IPC_MESSAGE_HANDLER(ViewMsg_SystemColorsChanged, OnSystemColorsChanged)
 #endif
 #if defined(ENABLE_PLUGINS)
     IPC_MESSAGE_HANDLER(ViewMsg_PurgePluginListCache, OnPurgePluginListCache)
@@ -1817,6 +1819,14 @@ void RenderThreadImpl::OnUpdateScrollbarTheme(
       params.preferred_scroller_style, params.redraw,
       params.scroll_animation_enabled, params.button_placement);
 }
+
+void RenderThreadImpl::OnSystemColorsChanged(
+    int aqua_color_variant,
+    const std::string& highlight_text_color,
+    const std::string& highlight_color) {
+  SystemColorsDidChange(aqua_color_variant, highlight_text_color,
+                        highlight_color);
+}
 #endif
 
 void RenderThreadImpl::OnCreateNewSharedWorker(
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index eef203b..190d557 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -476,6 +476,9 @@ class CONTENT_EXPORT RenderThreadImpl
 #if defined(OS_MACOSX)
   void OnUpdateScrollbarTheme(
       const ViewMsg_UpdateScrollbarTheme_Params& params);
+  void OnSystemColorsChanged(int aqua_color_variant,
+                             const std::string& highlight_text_color,
+                             const std::string& highlight_color);
 #endif
   void OnCreateNewSharedWorker(
       const WorkerProcessMsg_CreateWorker_Params& params);
diff --git a/content/renderer/theme_helper_mac.h b/content/renderer/theme_helper_mac.h
new file mode 100644
index 0000000..98e6949
--- /dev/null
+++ b/content/renderer/theme_helper_mac.h
@@ -0,0 +1,20 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_RENDERER_THEME_HELPER_MAC_H_
+#define CONTENT_RENDERER_THEME_HELPER_MAC_H_
+
+#include <string>
+
+namespace content {
+
+// Updates the process-wide preferences for system theme colors, by setting
+// the respective NSUserDefaults and posting notifications.
+void SystemColorsDidChange(int aqua_color_variant,
+                           const std::string& highlight_text_color,
+                           const std::string& highlight_color);
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_THEME_HELPER_MAC_H_
diff --git a/content/renderer/theme_helper_mac.mm b/content/renderer/theme_helper_mac.mm
new file mode 100644
index 0000000..7fbc6ba
--- /dev/null
+++ b/content/renderer/theme_helper_mac.mm
@@ -0,0 +1,55 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/renderer/theme_helper_mac.h"
+
+#include <Cocoa/Cocoa.h>
+
+#include "base/strings/sys_string_conversions.h"
+
+namespace content {
+
+void SystemColorsDidChange(int aqua_color_variant,
+                           const std::string& highlight_text_color,
+                           const std::string& highlight_color) {
+  NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
+
+  // Register the defaults in the NSArgumentDomain, which is considered
+  // volatile. Registering in the normal application domain fails from within
+  // the sandbox on 10.10+.
+  [defaults removeVolatileDomainForName:NSArgumentDomain];
+
+  NSDictionary* domain_values = @{
+    @"AppleAquaColorVariant" : @(aqua_color_variant),
+    @"AppleHighlightedTextColor" :
+        base::SysUTF8ToNSString(highlight_text_color),
+    @"AppleHighlightColor" : base::SysUTF8ToNSString(highlight_color)
+  };
+  [defaults setVolatileDomain:domain_values forName:NSArgumentDomain];
+
+  // CoreUI expects two distributed notifications to be posted as a result of
+  // the Aqua color variant being changed: AppleAquaColorVariantChanged and
+  // AppleColorPreferencesChangedNotification. These cannot be posted from
+  // within the sandbox, as distributed notifications are always delivered
+  // from the distnoted server, not directly from the posting app. As a result,
+  // the Aqua control color will not change as it should.
+
+  // However, the highlight color variant can be updated as a result of
+  // posting local notifications. Post the notifications required to make that
+  // change visible.
+  NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
+
+  // Trigger a NSDynamicSystemColorStore recache. Both Will and Did
+  // must be posted.
+  [center postNotificationName:@"NSSystemColorsWillChangeNotification"
+                        object:nil];
+  [center postNotificationName:NSSystemColorsDidChangeNotification
+                        object:nil];
+  // Post the notification that CoreUI would trigger as a result of the Aqua
+  // color change.
+  [center postNotificationName:NSControlTintDidChangeNotification
+                        object:nil];
+}
+
+}  // namespace content