[Android History] Add favicons to history item views

BUG=654071

Review-Url: https://codereview.chromium.org/2571933002
Cr-Commit-Position: refs/heads/master@{#438939}

chrome/android/java/src/org/chromium/chrome/browser/history/HistoryAdapter.java

@@ -132,7 +132,7 @@ public class HistoryAdapter extends DateDividedAdapter implements BrowsingHistor
         SelectableItemViewHolder<HistoryItem> holder =
                 (SelectableItemViewHolder<HistoryItem>) current;
         holder.displayItem(item);
-        item.setHistoryManager(mManager);
+        ((HistoryItemView) holder.itemView).setHistoryManager(mManager);
     }
 
     @Override

chrome/android/java/src/org/chromium/chrome/browser/history/HistoryItemView.java

@@ -5,24 +5,49 @@
 package org.chromium.chrome.browser.history;
 
 import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.support.v4.graphics.drawable.RoundedBitmapDrawable;
+import android.support.v4.graphics.drawable.RoundedBitmapDrawableFactory;
 import android.util.AttributeSet;
 import android.view.View;
+import android.widget.ImageView;
 import android.widget.TextView;
 
+import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.favicon.LargeIconBridge.LargeIconCallback;
+import org.chromium.chrome.browser.widget.RoundedIconGenerator;
 import org.chromium.chrome.browser.widget.TintedImageButton;
 import org.chromium.chrome.browser.widget.selection.SelectableItemView;
 
 /**
  * The SelectableItemView for items displayed in the browsing history UI.
  */
-public class HistoryItemView extends SelectableItemView<HistoryItem> {
+public class HistoryItemView extends SelectableItemView<HistoryItem> implements LargeIconCallback {
     private TextView mTitle;
     private TextView mDomain;
     private TintedImageButton mRemoveButton;
+    private ImageView mIconImageView;
+
+    private HistoryManager mHistoryManager;
+    private final RoundedIconGenerator mIconGenerator;
+
+    private final int mMinIconSize;
+    private final int mDisplayedIconSize;
+    private final int mCornerRadius;
 
     public HistoryItemView(Context context, AttributeSet attrs) {
         super(context, attrs);
+
+        mCornerRadius = getResources().getDimensionPixelSize(R.dimen.default_favicon_corner_radius);
+        mMinIconSize = getResources().getDimensionPixelSize(R.dimen.default_favicon_min_size);
+        mDisplayedIconSize = getResources().getDimensionPixelSize(R.dimen.default_favicon_size);
+        int textSize = getResources().getDimensionPixelSize(R.dimen.default_favicon_icon_text_size);
+        int iconColor = ApiCompatibilityUtils.getColor(
+                getResources(), R.color.default_favicon_background_color);
+        mIconGenerator = new RoundedIconGenerator(mDisplayedIconSize , mDisplayedIconSize,
+                mCornerRadius, iconColor, textSize);
     }
 
     @Override
@@ -30,6 +55,7 @@ public class HistoryItemView extends SelectableItemView<HistoryItem> {
         super.onFinishInflate();
         mTitle = (TextView) findViewById(R.id.title);
         mDomain = (TextView) findViewById(R.id.domain);
+        mIconImageView = (ImageView) findViewById(R.id.icon_view);
         mRemoveButton = (TintedImageButton) findViewById(R.id.remove);
         mRemoveButton.setOnClickListener(new OnClickListener() {
             @Override
@@ -41,9 +67,14 @@ public class HistoryItemView extends SelectableItemView<HistoryItem> {
 
     @Override
     public void setItem(HistoryItem item) {
+        if (getItem() == item) return;
+
         super.setItem(item);
+
         mTitle.setText(item.getTitle());
         mDomain.setText(item.getDomain());
+        mIconImageView.setImageResource(R.drawable.default_favicon);
+        if (mHistoryManager != null) requestIcon();
     }
 
     /**
@@ -51,6 +82,10 @@ public class HistoryItemView extends SelectableItemView<HistoryItem> {
      */
     public void setHistoryManager(HistoryManager manager) {
         getItem().setHistoryManager(manager);
+        if (mHistoryManager == manager) return;
+
+        mHistoryManager = manager;
+        requestIcon();
     }
 
     /**
@@ -64,4 +99,26 @@ public class HistoryItemView extends SelectableItemView<HistoryItem> {
     protected void onClick() {
         if (getItem() != null) getItem().open();
     }
+
+    @Override
+    public void onLargeIconAvailable(Bitmap icon, int fallbackColor,
+            boolean isFallbackColorDefault) {
+        // TODO(twellington): move this somewhere that can be shared with bookmarks.
+        if (icon == null) {
+            mIconGenerator.setBackgroundColor(fallbackColor);
+            icon = mIconGenerator.generateIconForUrl(getItem().getUrl());
+            mIconImageView.setImageDrawable(new BitmapDrawable(getResources(), icon));
+        } else {
+            RoundedBitmapDrawable roundedIcon = RoundedBitmapDrawableFactory.create(
+                    getResources(),
+                    Bitmap.createScaledBitmap(icon, mDisplayedIconSize, mDisplayedIconSize, false));
+            roundedIcon.setCornerRadius(mCornerRadius);
+            mIconImageView.setImageDrawable(roundedIcon);
+        }
+    }
+
+    private void requestIcon() {
+        mHistoryManager.getLargeIconBridge().getLargeIconForUrl(
+                getItem().getUrl(), mMinIconSize, this);
+    }
 }

chrome/android/java/src/org/chromium/chrome/browser/history/HistoryManager.java

@@ -5,7 +5,9 @@
 package org.chromium.chrome.browser.history;
 
 import android.app.Activity;
+import android.app.ActivityManager;
 import android.content.ComponentName;
+import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.provider.Browser;
@@ -17,11 +19,14 @@ import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.ViewGroup;
 
+import org.chromium.base.ContextUtils;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.IntentHandler;
 import org.chromium.chrome.browser.document.ChromeLauncherActivity;
+import org.chromium.chrome.browser.favicon.LargeIconBridge;
 import org.chromium.chrome.browser.preferences.PreferencesLauncher;
 import org.chromium.chrome.browser.preferences.privacy.ClearBrowsingDataPreferences;
+import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.chrome.browser.util.IntentUtils;
 import org.chromium.chrome.browser.widget.TintedDrawable;
 import org.chromium.chrome.browser.widget.selection.SelectableListLayout;
@@ -34,10 +39,14 @@ import java.util.List;
  * Displays and manages the UI for browsing history.
  */
 public class HistoryManager implements OnMenuItemClickListener {
+    private static final int FAVICON_MAX_CACHE_SIZE_BYTES = 10 * 1024 * 1024; // 10MB
+    private static final int MEGABYTES_TO_BYTES =  1024 * 1024;
+
     private final Activity mActivity;
     private final SelectableListLayout mSelectableListLayout;
     private final HistoryAdapter mHistoryAdapter;
     private final SelectionDelegate<HistoryItem> mSelectionDelegate;
+    private LargeIconBridge mLargeIconBridge;
 
     /**
      * Creates a new HistoryManager.
@@ -76,6 +85,13 @@ public class HistoryManager implements OnMenuItemClickListener {
                     mHistoryAdapter.loadMoreItems();
                 }
             }});
+
+        mLargeIconBridge = new LargeIconBridge(Profile.getLastUsedProfile().getOriginalProfile());
+        ActivityManager activityManager = ((ActivityManager) ContextUtils
+                .getApplicationContext().getSystemService(Context.ACTIVITY_SERVICE));
+        int maxSize = Math.min((activityManager.getMemoryClass() / 4) * MEGABYTES_TO_BYTES,
+                FAVICON_MAX_CACHE_SIZE_BYTES);
+        mLargeIconBridge.createCache(maxSize);
     }
 
     @Override
@@ -115,6 +131,8 @@ public class HistoryManager implements OnMenuItemClickListener {
     public void onDestroyed() {
         mSelectableListLayout.onDestroyed();
         mHistoryAdapter.onDestroyed();
+        mLargeIconBridge.destroy();
+        mLargeIconBridge = null;
     }
 
     /**
@@ -176,6 +194,13 @@ public class HistoryManager implements OnMenuItemClickListener {
         IntentUtils.safeStartActivity(mActivity, intent);
     }
 
+    /**
+     * @return The {@link LargeIconBridge} used to fetch large favicons.
+     */
+    public LargeIconBridge getLargeIconBridge() {
+        return mLargeIconBridge;
+    }
+
     private void openItemsInNewTabs(List<HistoryItem> items, boolean isIncognito) {
         for (HistoryItem item : items) {
             openUrl(item.getUrl(), isIncognito, true);