[Android History] Add support for opening items

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

Index: chrome/android/java/src/org/chromium/chrome/browser/history/HistoryManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/history/HistoryManager.java b/chrome/android/java/src/org/chromium/chrome/browser/history/HistoryManager.java
index 28fdcb3529f85de1a7fe650c92877e294fea193b..cbe8dfaabd4dd367c18130de6bda78f2ddb333ea 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/history/HistoryManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/history/HistoryManager.java
@@ -5,17 +5,26 @@
 package org.chromium.chrome.browser.history;
 
 import android.app.Activity;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.net.Uri;
+import android.provider.Browser;
 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.IntentHandler;
+import org.chromium.chrome.browser.document.ChromeLauncherActivity;
+import org.chromium.chrome.browser.util.IntentUtils;
 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;
 
+import java.util.List;
+
 /**
  * Displays and manages the UI for browsing history.
  */
@@ -33,7 +42,7 @@ public class HistoryManager implements OnMenuItemClickListener {
         mActivity = activity;
 
         mSelectionDelegate = new SelectionDelegate<>();
-        mHistoryAdapter = new HistoryAdapter(mSelectionDelegate);
+        mHistoryAdapter = new HistoryAdapter(mSelectionDelegate, this);
 
         mSelectableListLayout =
                 (SelectableListLayout) LayoutInflater.from(activity).inflate(
@@ -58,6 +67,14 @@ public class HistoryManager implements OnMenuItemClickListener {
         if (item.getItemId() == R.id.close_menu_id && !DeviceFormFactor.isTablet(mActivity)) {
             mActivity.finish();
             return true;
+        } else if (item.getItemId() == R.id.selection_mode_open_in_new_tab) {
+            openItemsInNewTabs(mSelectionDelegate.getSelectedItems(), false);
+            mSelectionDelegate.clearSelection();
+            return true;
+        } else if (item.getItemId() == R.id.selection_mode_open_in_incognito) {
+            openItemsInNewTabs(mSelectionDelegate.getSelectedItems(), true);
+            mSelectionDelegate.clearSelection();
+            return true;
         }
         return false;
     }
@@ -76,4 +93,48 @@ public class HistoryManager implements OnMenuItemClickListener {
         mSelectableListLayout.onDestroyed();
         mHistoryAdapter.onDestroyed();
     }
+
+    /**
+     * Open the history item.
+     * @param url The URL of the history item.
+     * @param isIncognito Whether to open the history item in an incognito tab. If null, the tab
+     *                    will open in the current tab model.
+     * @param createNewTab Whether a new tab should be created. If false, the item will clobber the
+     *                     the current tab.
+     */
+    public void openItem(String url, Boolean isIncognito, boolean createNewTab) {
+        // Construct basic intent.
+        Intent viewIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+        viewIntent.putExtra(Browser.EXTRA_APPLICATION_ID,
+                mActivity.getApplicationContext().getPackageName());
+
+        // Determine component or class name.
+        ComponentName component;
+        if (DeviceFormFactor.isTablet(mActivity)) {
+            component = mActivity.getComponentName();
+        } else {
+            component = IntentUtils.safeGetParcelableExtra(
+                    mActivity.getIntent(), IntentHandler.EXTRA_PARENT_COMPONENT);
+        }
+        if (component != null) {
+            viewIntent.setComponent(component);
+        } else {
+            viewIntent.setClass(mActivity, ChromeLauncherActivity.class);
+        }
+
+        // Set other intent extras.
+        if (isIncognito != null) {
+            viewIntent.putExtra(IntentHandler.EXTRA_OPEN_NEW_INCOGNITO_TAB, isIncognito);
+        }
+        if (createNewTab) viewIntent.putExtra(Browser.EXTRA_CREATE_NEW_TAB, true);
+
+        // Send intent.
+        IntentHandler.startActivityForTrustedIntent(viewIntent, mActivity);
+    }
+
+    private void openItemsInNewTabs(List<HistoryItem> items, boolean isIncognito) {
+        for (HistoryItem item : items) {
+            openItem(item.getUrl(), isIncognito, true);
+        }
+    }
 }