Splitting Dialtacts activity into two: Dialer and Contacts
diff --git a/src/com/android/contacts/ContactsActivity.java b/src/com/android/contacts/ContactsActivity.java
new file mode 100644
index 0000000..fbffc17
--- /dev/null
+++ b/src/com/android/contacts/ContactsActivity.java
@@ -0,0 +1,218 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.contacts;
+
+import android.app.Activity;
+import android.app.TabActivity;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.provider.Contacts;
+import android.provider.Contacts.Intents.UI;
+import android.view.KeyEvent;
+import android.view.Window;
+import android.widget.TabHost;
+
+/**
+ * The contacts activity that has one tab with social activity stream and
+ * another with contact list. This is the container and the tabs are embedded
+ * using intents.
+ */
+public class ContactsActivity extends TabActivity implements TabHost.OnTabChangeListener {
+    private static final String TAG = "Contacts";
+    private static final String FAVORITES_ENTRY_COMPONENT =
+            "com.android.contacts.DialtactsFavoritesEntryActivity";
+
+    private static final int TAB_INDEX_CONTACTS = 0;
+    private static final int TAB_INDEX_FAVORITES = 1;
+
+    static final String EXTRA_IGNORE_STATE = "ignore-state";
+
+    /** Name of the dialtacts shared preferences */
+    static final String PREFS_DIALTACTS = "dialtacts";
+    /** If true, when handling the contacts intent the favorites tab will be shown instead */
+    static final String PREF_FAVORITES_AS_CONTACTS = "favorites_as_contacts";
+    static final boolean PREF_FAVORITES_AS_CONTACTS_DEFAULT = false;
+
+    private TabHost mTabHost;
+    private String mFilterText;
+
+    @Override
+    protected void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+
+        final Intent intent = getIntent();
+
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        setContentView(R.layout.dialer_activity);
+
+        mTabHost = getTabHost();
+        mTabHost.setOnTabChangedListener(this);
+
+        // Setup the tabs
+        setupContactsTab();
+        setupFavoritesTab();
+
+        setCurrentTab(intent);
+
+        if (intent.getAction().equals(Contacts.Intents.UI.FILTER_CONTACTS_ACTION)
+                && icicle == null) {
+            setupFilterText(intent);
+        }
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+
+        int currentTabIndex = mTabHost.getCurrentTab();
+        if (currentTabIndex == TAB_INDEX_CONTACTS || currentTabIndex == TAB_INDEX_FAVORITES) {
+            SharedPreferences.Editor editor = getSharedPreferences(PREFS_DIALTACTS, MODE_PRIVATE)
+                    .edit();
+            editor.putBoolean(PREF_FAVORITES_AS_CONTACTS, currentTabIndex == TAB_INDEX_FAVORITES);
+            editor.commit();
+        }
+    }
+
+    private void setupContactsTab() {
+        Intent intent = new Intent(UI.LIST_DEFAULT);
+        intent.setClass(this, ContactsListActivity.class);
+
+        mTabHost.addTab(mTabHost.newTabSpec("contacts")
+                .setIndicator(getText(R.string.contactsIconLabel),
+                        getResources().getDrawable(R.drawable.ic_tab_contacts))
+                .setContent(intent));
+    }
+
+    private void setupFavoritesTab() {
+        Intent intent = new Intent(UI.LIST_STREQUENT_ACTION);
+        intent.setClass(this, ContactsListActivity.class);
+
+        mTabHost.addTab(mTabHost.newTabSpec("favorites")
+                .setIndicator(getString(R.string.contactsFavoritesLabel),
+                        getResources().getDrawable(R.drawable.ic_tab_starred))
+                .setContent(intent));
+    }
+
+    /**
+     * Sets the current tab based on the intent's request type
+     *
+     * @param recentCallsRequest true is the recent calls tab is desired, false otherwise
+     */
+    private void setCurrentTab(Intent intent) {
+
+        // Dismiss menu provided by any children activities
+        Activity activity = getLocalActivityManager().
+                getActivity(mTabHost.getCurrentTabTag());
+        if (activity != null) {
+            activity.closeOptionsMenu();
+        }
+
+        // Tell the children activities that they should ignore any possible saved
+        // state and instead reload their state from the parent's intent
+        intent.putExtra(EXTRA_IGNORE_STATE, true);
+
+        // Choose the tab based on the inbound intent
+        String componentName = intent.getComponent().getClassName();
+        if (FAVORITES_ENTRY_COMPONENT.equals(componentName)) {
+            mTabHost.setCurrentTab(TAB_INDEX_FAVORITES);
+        } else if (Contacts.Intents.UI.FILTER_CONTACTS_ACTION.equals(intent.getAction())) {
+            mTabHost.setCurrentTab(TAB_INDEX_CONTACTS);
+        } else {
+            SharedPreferences prefs = getSharedPreferences(PREFS_DIALTACTS, MODE_PRIVATE);
+            boolean favoritesAsContacts = prefs.getBoolean(PREF_FAVORITES_AS_CONTACTS,
+                    PREF_FAVORITES_AS_CONTACTS_DEFAULT);
+            if (favoritesAsContacts) {
+                mTabHost.setCurrentTab(TAB_INDEX_FAVORITES);
+            } else {
+                mTabHost.setCurrentTab(TAB_INDEX_CONTACTS);
+            }
+        }
+
+        // Tell the children activities that they should honor their saved states
+        // instead of the state from the parent's intent
+        intent.putExtra(EXTRA_IGNORE_STATE, false);
+    }
+
+    @Override
+    public void onNewIntent(Intent newIntent) {
+        setIntent(newIntent);
+        setCurrentTab(newIntent);
+        final String action = newIntent.getAction();
+        if (action.equals(Contacts.Intents.UI.FILTER_CONTACTS_ACTION)) {
+            setupFilterText(newIntent);
+        }
+    }
+
+    /**
+     * Retrieves the filter text stored in {@link #setupFilterText(Intent)}.
+     * This text originally came from a FILTER_CONTACTS_ACTION intent received
+     * by this activity. The stored text will then be cleared after after this
+     * method returns.
+     *
+     * @return The stored filter text
+     */
+    public String getAndClearFilterText() {
+        String filterText = mFilterText;
+        mFilterText = null;
+        return filterText;
+    }
+
+    /**
+     * Stores the filter text associated with a FILTER_CONTACTS_ACTION intent.
+     * This is so child activities can check if they are supposed to display a filter.
+     *
+     * @param intent The intent received in {@link #onNewIntent(Intent)}
+     */
+    private void setupFilterText(Intent intent) {
+        // If the intent was relaunched from history, don't apply the filter text.
+        if ((intent.getFlags() & Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) != 0) {
+            return;
+        }
+        String filter = intent.getStringExtra(Contacts.Intents.UI.FILTER_TEXT_EXTRA_KEY);
+        if (filter != null && filter.length() > 0) {
+            mFilterText = filter;
+        }
+    }
+
+    @Override
+    public boolean onKeyDown(int keyCode, KeyEvent event) {
+        // Handle BACK
+        if (keyCode == KeyEvent.KEYCODE_BACK && isTaskRoot()) {
+            // Instead of stopping, simply push this to the back of the stack.
+            // This is only done when running at the top of the stack;
+            // otherwise, we have been launched by someone else so need to
+            // allow the user to go back to the caller.
+            moveTaskToBack(false);
+            return true;
+        }
+
+        return super.onKeyDown(keyCode, event);
+    }
+
+    /** {@inheritDoc} */
+    public void onTabChanged(String tabId) {
+        // Because we're using Activities as our tab children, we trigger
+        // onWindowFocusChanged() to let them know when they're active.  This may
+        // seem to duplicate the purpose of onResume(), but it's needed because
+        // onResume() can't reliably check if a keyguard is active.
+        Activity activity = getLocalActivityManager().getActivity(tabId);
+        if (activity != null) {
+            activity.onWindowFocusChanged(true);
+        }
+    }
+}