Add Browser Actions tab model selector and open a tab through it if ChromeTabbedActivity is not ava…

chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsTabCreatorManager.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.browseractions;
+
+import org.chromium.chrome.browser.TabState;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.tab.TabDelegateFactory;
+import org.chromium.chrome.browser.tabmodel.TabCreatorManager;
+import org.chromium.chrome.browser.tabmodel.TabModel;
+import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
+import org.chromium.content_public.browser.LoadUrlParams;
+import org.chromium.content_public.browser.WebContents;
+
+/**
+ * The mananger returns a {@link BrowserActionsTabCreator} to create Tabs for Browser Actions.

[Yusuf, 2017/07/18 22:59:47]

manager typo

[ltian, 2017/08/07 23:24:11]

Ops, sorry for that!

+ */
+public class BrowserActionsTabCreatorManager implements TabCreatorManager {
+    private final BrowserActionsTabCreator mTabCreator;
+
+    public BrowserActionsTabCreatorManager() {
+        mTabCreator = new BrowserActionsTabCreator();
+    }
+
+    /**
+     * This class creates various kinds of new tabs specific for Browser Actions.
+     * The created tabs are not bound with {@link ChromeActivity}.
+     */
+    public class BrowserActionsTabCreator extends TabCreator {
+        private TabModel mTabModel;
+
+        @Override
+        public boolean createsTabsAsynchronously() {
+            return true;
+        }
+
+        @Override
+        public Tab createNewTab(LoadUrlParams loadUrlParams, TabLaunchType type, Tab parent) {
+            Tab tab = Tab.createDetached(new TabDelegateFactory(), true);
+            tab.loadUrl(loadUrlParams);
+            mTabModel.addTab(tab, -1, TabLaunchType.FROM_BROWSER_ACTIONS);

[Yusuf, 2017/07/18 22:59:47]

if we are using FROM_BROWSER_ACTIONS for this, when are we using
FROM_DETACHED_USER_ACTION?

[ltian, 2017/08/07 23:24:11]

New plan will opens all the tabs in lazy load mode for now, so
Tab.createDetached() should not be used in this CL and FROM_BROWSER_ACTIONS is
enough.

+            return tab;
+        }
+
+        @Override
+        public Tab createFrozenTab(TabState state, int id, int index) {
+            Tab tab =
+                    Tab.createFrozenTabFromState(id, null, false, null, Tab.INVALID_TAB_ID, state);
+            mTabModel.addTab(tab, index, TabLaunchType.FROM_RESTORE);
+            return tab;
+        }
+
+        @Override
+        public Tab launchUrl(String url, TabLaunchType type) {
+            return createNewTab(new LoadUrlParams(url), type, null);
+        }
+
+        @Override
+        public boolean createTabWithWebContents(
+                Tab parent, WebContents webContents, int parentId, TabLaunchType type, String url) {
+            createNewTab(new LoadUrlParams(url), type, null);
+            return true;
+        }
+
+        /**
+         * Sets the tab model and tab content manager to use.
+         * @param model The new {@link TabModel} to use.
+         */
+        public void setTabModel(TabModel model) {
+            mTabModel = model;
+        }
+    }
+
+    @Override
+    public TabCreator getTabCreator(boolean incognito) {
+        return mTabCreator;
+    }
+}