[Android WebView] Implement WebSettings.{get|set}LoadWithOverviewMode

android_webview/javatests/src/org/chromium/android_webview/test/TestAwContentsClient.java

 // Copyright (c) 2012 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.
 
 package org.chromium.android_webview.test;
 
 import android.webkit.ConsoleMessage;
 
 import org.chromium.content.browser.test.util.CallbackHelper;
 import org.chromium.content.browser.test.util.TestCallbackHelperContainer.OnPageStartedHelper;
 import org.chromium.content.browser.test.util.TestCallbackHelperContainer.OnPageFinishedHelper;
 import org.chromium.content.browser.test.util.TestCallbackHelperContainer.OnReceivedErrorHelper;
 import org.chromium.content.browser.test.util.TestCallbackHelperContainer.OnEvaluateJavaScriptResultHelper;
 
 class TestAwContentsClient extends NullContentsClient {
     private String mUpdatedTitle;
     private OnPageStartedHelper mOnPageStartedHelper;
     private OnPageFinishedHelper mOnPageFinishedHelper;
     private OnReceivedErrorHelper mOnReceivedErrorHelper;
     private OnEvaluateJavaScriptResultHelper mOnEvaluateJavaScriptResultHelper;
     private AddMessageToConsoleHelper mAddMessageToConsoleHelper;
+    private OnScaleChangedHelper mOnScaleChangedHelper;
 
     public TestAwContentsClient() {
         mOnPageStartedHelper = new OnPageStartedHelper();
         mOnPageFinishedHelper = new OnPageFinishedHelper();
         mOnReceivedErrorHelper = new OnReceivedErrorHelper();
         mOnEvaluateJavaScriptResultHelper = new OnEvaluateJavaScriptResultHelper();
         mAddMessageToConsoleHelper = new AddMessageToConsoleHelper();
+        mOnScaleChangedHelper = new OnScaleChangedHelper();
     }
 
     public OnPageStartedHelper getOnPageStartedHelper() {
         return mOnPageStartedHelper;
     }
 
     public OnPageFinishedHelper getOnPageFinishedHelper() {
         return mOnPageFinishedHelper;
     }
 
     public OnReceivedErrorHelper getOnReceivedErrorHelper() {
         return mOnReceivedErrorHelper;
     }
 
     public OnEvaluateJavaScriptResultHelper getOnEvaluateJavaScriptResultHelper() {
         return mOnEvaluateJavaScriptResultHelper;
     }
 
     public AddMessageToConsoleHelper getAddMessageToConsoleHelper() {
         return mAddMessageToConsoleHelper;
     }
 
+    public static class OnScaleChangedHelper extends CallbackHelper {
+        private float mPreviousScale;
+        private float mCurrentScale;
+        public void notifyCalled(float oldScale, float newScale) {
+            mPreviousScale = oldScale;
+            mCurrentScale = newScale;
+            super.notifyCalled();
+        }
+        public float getLastScaleRatio() {
+            assert getCallCount() > 0;
+            return mCurrentScale / mPreviousScale;
+        }
+    }
+
+    public OnScaleChangedHelper getOnScaleChangedHelper() {
+        return mOnScaleChangedHelper;
+    }
+
     @Override
     public void onUpdateTitle(String title) {
         mUpdatedTitle = title;
     }
 
     public String getUpdatedTitle() {
         return mUpdatedTitle;
     }
 
     @Override
@@ skipping 45 matching lines @@
         }
 
         void notifyCalled(int level, String message, int lineNumer, String sourceId) {
             mLevel = level;
             mMessage = message;
             mLineNumber = lineNumer;
             mSourceId = sourceId;
             notifyCalled();
         }
     }
+
+    @Override
+    public void onScaleChanged(float oldScale, float newScale) {
+        mOnScaleChangedHelper.notifyCalled(oldScale, newScale);
+    }
 }