android browser 的几个小feature (四) kitkat上实现UaProfile的设置

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在Browser的app里面，为了方便测试，就先简单写了一个例子。

--- a/src/com/android/browser/BrowserSettings.java+++ b/src/com/android/browser/BrowserSettings.java@@ -272,6 +272,8 @@ public class BrowserSettings implements OnSharedPreferenceChangeListener,         } else {             settings.setUserAgentString(USER_AGENTS[getUserAgent()]);         }+       String uaprofile = "www.baidu.com";+       settings.setUserProfileString(uaprofile);     }

UaProfile一般为一个xml的网页，存放在运营商的服务器上。我们这边先以www.baidu.com来代替
然后修改的就是framework的部分了，framework/base中的webkit中，我们写了两个方法分别是get和set Profile

diff --git a/core/java/android/webkit/WebSettings.java b/core/java/android/webkit/WebSettings.javaindex 98ef66e..4e273f9 100644--- a/core/java/android/webkit/WebSettings.java+++ b/core/java/android/webkit/WebSettings.java@@ -599,6 +599,9 @@ public abstract class WebSettings {         throw new MustOverrideException();     }+    /** {@hide} */+    public synchronized void setUserProfile(int ua) {+    }     /**      * Gets the user-agent as an integer code.      * <ul>@@ -1332,6 +1335,16 @@ public abstract class WebSettings {         throw new MustOverrideException();     }+    /** {@hide} */+    public synchronized void setUserProfileString(String ua){+       throw new MustOverrideException();+    }++    /** {@hide} */+    public synchronized String getUserProfileString()+    {+        throw new MustOverrideException();+    }     /**      * Gets the WebView's user-agent string.      *

在framework的webview中，我们也需要重新对websettings里面的方法进行重写。

--- a/chromium/java/com/android/webview/chromium/ContentSettingsAdapter.java+++ b/chromium/java/com/android/webview/chromium/ContentSettingsAdapter.java@@ -200,6 +200,16 @@ public class ContentSettingsAdapter extends android.webkit.WebSettings {     }     @Override+    public synchronized void setUserProfile(int ua)+    {+        if (ua == 0) {+            setUserProfileString(null);+        } else {+            Log.d("chao","setUserProfile not supported, ua=" + ua);+        }+    }++    @Override     public synchronized int getUserAgent() {         // Minimal implementation for backwards compatibility: just identifies default vs custom.         return AwSettings.getDefaultUserAgent().equals(getUserAgentString()) ? 0 : -1;@@ -511,6 +521,16 @@ public class ContentSettingsAdapter extends android.webkit.WebSettings {     }     @Override+    public synchronized void setUserProfileString(String ua) {+        mAwSettings.setUserProfileString(ua);+    }++    @Override+    public synchronized String getUserProfileString() {+       return mAwSettings.getUserProfileString();+    }++    @Override     public synchronized String getUserAgentString() {         return mAwSettings.getUserAgentString();     }

接下来修改的是extern/chromium_org中的部分了。
先是android_webview中的java部分，这部分可以和framework中进行互相调用。

--- a/android_webview/java/src/org/chromium/android_webview/AwSettings.java+++ b/android_webview/java/src/org/chromium/android_webview/AwSettings.java@@ -14,7 +14,7 @@ import android.provider.Settings; import android.webkit.WebSettings.PluginState; import android.webkit.WebSettings; import android.webkit.WebView;-+import android.util.Log; import org.chromium.base.CalledByNative; import org.chromium.base.JNINamespace; import org.chromium.base.ThreadUtils;@@ -64,6 +64,7 @@ public class AwSettings {     // TODO(mnaganov): Should be obtained from Android. Problem: it is hidden.     private String mDefaultTextEncoding = "Latin-1";     private String mUserAgent;+    private String mUserProfile;     private int mMinimumFontSize = 8;     private int mMinimumLogicalFontSize = 8;     private int mDefaultFontSize = 16;@@ -373,7 +374,6 @@ public class AwSettings {     private float getInitialPageScalePercentLocked() {         return mInitialPageScalePercent;     }-     /**      * See {@link android.webkit.WebSettings#setNeedInitialFocus}.      */@@ -469,6 +469,36 @@ public class AwSettings {     }     /**+     * Add by chao+     */+    public void setUserProfileString(String ua)+    {+        synchronized (mAwSettingsLock) {+            mUserProfile = ua;+            Log.e("chao","setUserProfileString ua = " + ua);+           mEventHandler.maybeRunOnUiThreadBlocking(new Runnable() {+                @Override+                public void run() {+                   if (mNativeAwSettings != 0) {+                        nativeUpdateUserProfileLocked(mNativeAwSettings);+                    }+                }+            });+        }+    }++    public String getUserProfileString() {+        synchronized (mAwSettingsLock) {+            return mUserProfile;+        }+    }++    @CalledByNative+    private String getUserProfileLocked() {+        return mUserProfile;+    }++    /**      * See {@link android.webkit.WebSettings#getUserAgentString}.      */     public String getUserAgentString() {@@ -1410,6 +1440,7 @@ public class AwSettings {     private native void nativeUpdateInitialPageScaleLocked(int nativeAwSettings);+    private native void nativeUpdateUserProfileLocked(int nativeAwSettings);     private native void nativeUpdateUserAgentLocked(int nativeAwSettings);     private native void nativeUpdateWebkitPreferencesLocked(int nativeAwSettings);

在java端的部分处理完之后，可以对native的部分进行修改了。
于AwSettings.java相对应的部分是aw_settings.cc了。

diff --git a/android_webview/native/aw_settings.cc b/android_webview/native/aw_settings.ccindex e4aa588..a8863e2 100644--- a/android_webview/native/aw_settings.cc+++ b/android_webview/native/aw_settings.cc@@ -100,10 +100,29 @@ void AwSettings::UpdateEverythingLocked(JNIEnv* env, jobject obj) {   UpdateInitialPageScaleLocked(env, obj);   UpdateWebkitPreferencesLocked(env, obj);   UpdateUserAgentLocked(env, obj);+  UpdateUserProfileLocked(env, obj);   ResetScrollAndScaleState(env, obj);   UpdateFormDataPreferencesLocked(env, obj); }+void AwSettings::UpdateUserProfileLocked(JNIEnv* env, jobject obj) {+  if (!web_contents()) return;+  ScopedJavaLocalRef<jstring> str =+      Java_AwSettings_getUserProfileLocked(env, obj);+  bool uaprofile_overidden = str.obj() != NULL;+  LOG(ERROR) << "chao  uaprofile_overidden = " << uaprofile_overidden;+  if (uaprofile_overidden) {+    std::string override = base::android::ConvertJavaStringToUTF8(str);+    LOG(ERROR) << "chao  override = " << override;+    web_contents()->SetUserProfileOverride(override);+  }+} void AwSettings::UpdateUserAgentLocked(JNIEnv* env, jobject obj) {   if (!web_contents()) return;

因为是c文件，所以要给我们新添加的文件进行声明。

diff --git a/android_webview/native/aw_settings.h b/android_webview/native/aw_settings.hindex d1f81c3..e52adec 100644--- a/android_webview/native/aw_settings.h+++ b/android_webview/native/aw_settings.h@@ -32,6 +32,7 @@ class AwSettings : public content::WebContentsObserver {   void UpdateEverythingLocked(JNIEnv* env, jobject obj);   void UpdateInitialPageScaleLocked(JNIEnv* env, jobject obj);   void UpdateUserAgentLocked(JNIEnv* env, jobject obj);+  void UpdateUserProfileLocked(JNIEnv* env, jobject obj);   void UpdateWebkitPreferencesLocked(JNIEnv* env, jobject obj);   void UpdateFormDataPreferencesLocked(JNIEnv* env, jobject obj);

因为我们的方法是用web_contents()->SetUserProfileOverride(override)去进行相应的实现，所以我们还需要修改相应的文件。

diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.ccindex 8f09208..21070ec 100644--- a/content/browser/web_contents/web_contents_impl.cc+++ b/content/browser/web_contents/web_contents_impl.cc@@ -863,6 +863,29 @@ WebUI* WebContentsImpl::GetCommittedWebUI() const {   return render_manager_.web_ui(); }+void WebContentsImpl::SetUserProfileOverride(const std::string& override) {+  LOG(ERROR) << "chao override = " << override;+  WebPreferences prefs;+  prefs.user_profile_override = override;+  GURL url = controller_.GetActiveEntry()+      ? controller_.GetActiveEntry()->GetURL() : GURL::EmptyGURL();+  GetContentClient()->browser()->OverrideWebkitPrefs(host, url, &prefs);+}void WebContentsImpl::SetUserAgentOverride(const std::string& override) {   if (GetUserAgentOverride() == override)     return;

同样的，声明是必不可少的。

diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.hindex a5eaf7d..f833e8c 100644--- a/content/browser/web_contents/web_contents_impl.h+++ b/content/browser/web_contents/web_contents_impl.h@@ -229,6 +229,8 @@ class CONTENT_EXPORT WebContentsImpl   virtual WebUI* GetCommittedWebUI() const OVERRIDE;   virtual void SetUserAgentOverride(const std::string& override) OVERRIDE;   virtual const std::string& GetUserAgentOverride() const OVERRIDE;+  virtual void SetUserProfileOverride(const std::string& override) OVERRIDE; #if defined(OS_WIN) && defined(USE_AURA)   virtual void SetParentNativeViewAccessible(       gfx::NativeViewAccessible accessible_parent) OVERRIDE;

因为是继承的关系，所以还要在其父类中进行声明。

diff --git a/content/public/browser/web_contents.h b/content/public/browser/web_contents.hindex 86b51a2..b09a8c8 100644--- a/content/public/browser/web_contents.h+++ b/content/public/browser/web_contents.h@@ -210,6 +210,8 @@ class WebContents : public PageNavigator,   // Allows overriding the user agent used for NavigationEntries it owns.   virtual void SetUserAgentOverride(const std::string& override) = 0;+  virtual void SetUserProfileOverride(const std::string& override) = 0;   virtual const std::string& GetUserAgentOverride() const = 0; #if defined(OS_WIN) && defined(USE_AURA)

我们是利用webPrefrence作为中介，所以我们在webpreferences中要对相应的内容进行声明。这里，由于只有这一个对象，所以我们必须使用static变量来进行声明。

diff --git a/webkit/common/webpreferences.cc b/webkit/common/webpreferences.ccindex 02a87df..409a549 100644--- a/webkit/common/webpreferences.cc+++ b/webkit/common/webpreferences.cc@@ -12,6 +12,7 @@ using WebKit::WebSettings;+std::string WebPreferences::user_profile_override = ""; WebPreferences::WebPreferences()     : default_font_size(16),       default_fixed_font_size(13),@@ -154,6 +155,7 @@ WebPreferences::WebPreferences()       ASCIIToUTF16("Times New Roman"); }+ WebPreferences::~WebPreferences() { }diff --git a/webkit/common/webpreferences.h b/webkit/common/webpreferences.hindex d94ec9c..e2d44cb 100644--- a/webkit/common/webpreferences.h+++ b/webkit/common/webpreferences.h@@ -18,7 +18,6 @@ #include "base/strings/string16.h" #include "url/gurl.h" #include "webkit/common/webkit_common_export.h"- namespace WebKit { class WebView; }@@ -79,6 +78,7 @@ struct WEBKIT_COMMON_EXPORT WebPreferences {   bool remote_fonts_enabled;   bool javascript_can_access_clipboard;   bool xss_auditor_enabled;+  static std::string user_profile_override;   // We don't use dns_prefetching_enabled to disable DNS prefetching.  Instead,   // we disable the feature at a lower layer so that we catch non-WebKit uses   // of DNS prefetch as well.

在thirdparty的webkit中，我们要开始使用这个一直传递过来的值进行赋值。

diff --git a/Source/core/loader/FrameLoader.cpp b/Source/core/loader/FrameLoader.cppindex f068e20..c7399dc 100644--- a/Source/core/loader/FrameLoader.cpp+++ b/Source/core/loader/FrameLoader.cpp@@ -34,7 +34,6 @@ #include "config.h" #include "core/loader/FrameLoader.h"- #include "HTMLNames.h" #include "bindings/v8/DOMWrapperWorld.h" #include "bindings/v8/ScriptController.h"@@ -90,7 +89,10 @@ #include "wtf/TemporaryChange.h" #include "wtf/text/CString.h" #include "wtf/text/WTFString.h"-+#include <iostream>+#include "../../../../../webkit/common/webpreferences.h"+#include "public/platform/WebString.h"+#include <string> namespace WebCore { using namespace HTMLNames;@@ -1316,6 +1318,17 @@ int FrameLoader::numPendingOrLoadingRequests(bool recurse) const     return count; }+String FrameLoader::userProfile(const KURL& url) const+{+     WebPreferences prefs;++    std::string userProfile = prefs.user_profile_override;+    String tmp_Profile = WebKit::WebString::fromUTF8(userProfile);+    LOG_ERROR("chao userProfile");+    LOG_ERROR("chao userProfile = %s", userProfile);+    return tmp_Profile;+}+ String FrameLoader::userAgent(const KURL& url) const {     String userAgent = m_client->userAgent(url);@@ -1378,7 +1394,8 @@ void FrameLoader::addExtraFieldsToRequest(ResourceRequest& request)         return;     applyUserAgent(request);-+    LOG_ERROR("chao applyUserProfile  begin");+    applyUserProfile(request);     if (request.cachePolicy() == ReloadIgnoringCacheData) {         if (m_loadType == FrameLoadTypeReload)             request.setHTTPHeaderField("Cache-Control", "max-age=0");@@ -1395,6 +1412,21 @@ void FrameLoader::addExtraFieldsToRequest(ResourceRequest& request)     addHTTPOriginIfNeeded(request, String()); }++void FrameLoader::applyUserProfile(ResourceRequest& request)+{+    String userProfile = this->userProfile(request.url());+    LOG_ERROR("chao FrameLoader::applyUserProfile userProfile = %s",userProfile);+    request.setHTTPUaProfile(userProfile);+}++ void FrameLoader::addHTTPOriginIfNeeded(ResourceRequest& request, const String& origin) {     if (!request.httpOrigin().isEmpty())

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