🏡 Add a ChromeHomeNewTabPage

chrome/android/java/src/org/chromium/chrome/browser/ntp/LogoDelegateImpl.java

+// Copyright 2017 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.chrome.browser.ntp;
+
+import org.chromium.base.metrics.RecordHistogram;
+import org.chromium.chrome.browser.ntp.LogoBridge.Logo;
+import org.chromium.chrome.browser.ntp.LogoBridge.LogoObserver;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.content_public.browser.LoadUrlParams;
+import org.chromium.ui.base.PageTransition;
+
+import jp.tomorrowkey.android.gifplayer.BaseGifImage;
+
+/**
+ * An implementation of {@link LogoView.Delegate}.
+ */
+public class LogoDelegateImpl implements LogoView.Delegate {
+    // UMA enum constants. CTA means the "click-to-action" icon.
+    private static final String LOGO_SHOWN_UMA_NAME = "NewTabPage.LogoShown";
+    private static final int STATIC_LOGO_SHOWN = 0;
+    private static final int CTA_IMAGE_SHOWN = 1;
+
+    private static final String LOGO_CLICK_UMA_NAME = "NewTabPage.LogoClick";
+    private static final int STATIC_LOGO_CLICKED = 0;
+    private static final int CTA_IMAGE_CLICKED = 1;
+    private static final int ANIMATED_LOGO_CLICKED = 2;
+
+    private final Tab mTab;
+    private LogoView mLogoView;
+
+    private LogoBridge mLogoBridge;
+    private String mOnLogoClickUrl;
+    private String mAnimatedLogoUrl;
+
+    private boolean mIsDestroyed;
+
+    /**
+     * Construct a new {@link LogoDelegateImpl}.
+     * @param tab The tab showing the logo view.
+     * @param logoView The view that shows the search provider logo.
+     */
+    public LogoDelegateImpl(Tab tab, LogoView logoView) {
+        mTab = tab;
+        mLogoView = logoView;
+        mLogoBridge = new LogoBridge(tab.getProfile());
+    }
+
+    @Override
+    public void destroy() {
+        mIsDestroyed = true;
+    }
+
+    @Override
+    public void onLogoClicked(boolean isAnimatedLogoShowing) {
+        if (mIsDestroyed) return;
+
+        if (!isAnimatedLogoShowing && mAnimatedLogoUrl != null) {
+            RecordHistogram.recordSparseSlowlyHistogram(LOGO_CLICK_UMA_NAME, CTA_IMAGE_CLICKED);
+            mLogoView.showLoadingView();
+            mLogoBridge.getAnimatedLogo(new LogoBridge.AnimatedLogoCallback() {
+                @Override
+                public void onAnimatedLogoAvailable(BaseGifImage animatedLogoImage) {
+                    if (mIsDestroyed) return;
+                    mLogoView.playAnimatedLogo(animatedLogoImage);
+                }
+            }, mAnimatedLogoUrl);
+        } else if (mOnLogoClickUrl != null) {
+            RecordHistogram.recordSparseSlowlyHistogram(LOGO_CLICK_UMA_NAME,
+                    isAnimatedLogoShowing ? ANIMATED_LOGO_CLICKED : STATIC_LOGO_CLICKED);
+            mTab.loadUrl(new LoadUrlParams(mOnLogoClickUrl, PageTransition.LINK));
+        }
+    }
+
+    @Override
+    public void getSearchProviderLogo(final LogoObserver logoObserver) {
+        if (mIsDestroyed) return;
+
+        LogoObserver wrapperCallback = new LogoObserver() {
+            @Override
+            public void onLogoAvailable(Logo logo, boolean fromCache) {
+                if (mIsDestroyed) return;
+                mOnLogoClickUrl = logo != null ? logo.onClickUrl : null;
+                mAnimatedLogoUrl = logo != null ? logo.animatedLogoUrl : null;
+                if (logo != null) {
+                    RecordHistogram.recordSparseSlowlyHistogram(LOGO_SHOWN_UMA_NAME,
+                            logo.animatedLogoUrl == null ? STATIC_LOGO_SHOWN : CTA_IMAGE_SHOWN);
+                }
+                logoObserver.onLogoAvailable(logo, fromCache);
+            }
+        };
+
+        mLogoBridge.getCurrentLogo(wrapperCallback);
+    }
+}