[Android History] Add Android history manager UI and bridge

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

+// Copyright 2016 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.history;
+
+import android.app.Activity;
+import android.support.v7.widget.Toolbar.OnMenuItemClickListener;
+import android.view.LayoutInflater;
+import android.view.MenuItem;
+import android.view.ViewGroup;
+
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.widget.TintedDrawable;
+import org.chromium.chrome.browser.widget.selection.SelectableListLayout;
+import org.chromium.chrome.browser.widget.selection.SelectionDelegate;
+import org.chromium.ui.base.DeviceFormFactor;
+
+/**
+ * Displays and manages the UI for browsing history.
+ */
+public class HistoryManager implements OnMenuItemClickListener {
+    private Activity mActivity;
+    private SelectableListLayout mSelectableListLayout;
+    private HistoryAdapter mHistoryAdapter;
+    private SelectionDelegate<HistoryItem> mSelectionDelegate;

[gone, 2016/12/02 19:34:37]

finals?

[Theresa, 2016/12/02 20:49:32]

Done.

+
+    /**
+     * Creates a new HistoryManager.
+     * @param activity The Activity associated with the HistoryManager.
+     */
+    public HistoryManager(Activity activity) {
+        mActivity = activity;
+
+        mSelectionDelegate = new SelectionDelegate<HistoryItem>();

[gone, 2016/12/02 19:34:37]

new SelectionDelegate<>();

[Theresa, 2016/12/02 20:49:32]

Done.

+        mHistoryAdapter = new HistoryAdapter(mSelectionDelegate);
+
+        mSelectableListLayout =
+                (SelectableListLayout) LayoutInflater.from(activity).inflate(
+                        R.layout.history_main, null);
+        mSelectableListLayout.initializeRecyclerView(mHistoryAdapter);
+        mSelectableListLayout.initializeToolbar(R.layout.history_toolbar, mSelectionDelegate,
+                R.string.menu_history, null, R.id.normal_menu_group,
+                R.id.selection_mode_menu_group, this);
+        mSelectableListLayout.initializeEmptyView(
+                TintedDrawable.constructTintedDrawable(mActivity.getResources(),
+                        R.drawable.history_large),
+                R.string.history_manager_empty);
+
+        mHistoryAdapter.initialize();
+
+        // TODO(twellington): add a scroll listener to the RecyclerView that loads more items when
+        //                    the scroll position is near the end.
+    }
+
+    @Override
+    public boolean onMenuItemClick(MenuItem item) {
+        if (item.getItemId() == R.id.close_menu_id && !DeviceFormFactor.isTablet(mActivity)) {
+            mActivity.finish();
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * @return The view that shows the main browsing history UI.
+     */
+    public ViewGroup getView() {
+        return mSelectableListLayout;
+    }
+
+    /**
+     * Called when the activity/native page is destroyed.
+     */
+    public void onDestroyed() {
+        mSelectableListLayout.onDestroyed();
+        mHistoryAdapter.onDestroyed();
+    }
+}