TwoPaneController.java revision 28d5f72e0ad0db75b6243ee8125bfe3aadbdcb85 
1/*******************************************************************************
2 *      Copyright (C) 2012 Google Inc.
3 *      Licensed to The Android Open Source Project.
4 *
5 *      Licensed under the Apache License, Version 2.0 (the "License");
6 *      you may not use this file except in compliance with the License.
7 *      You may obtain a copy of the License at
8 *
9 *           http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *      Unless required by applicable law or agreed to in writing, software
12 *      distributed under the License is distributed on an "AS IS" BASIS,
13 *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *      See the License for the specific language governing permissions and
15 *      limitations under the License.
16 *******************************************************************************/
17
18package com.android.mail.ui;
19
20import com.android.mail.ConversationListContext;
21import com.android.mail.R;
22
23import android.app.Fragment;
24import android.app.FragmentTransaction;
25import android.os.Bundle;
26import android.view.Window;
27
28
29/**
30 * Controller for one-pane Mail activity. One Pane is used for phones, where screen real estate is
31 * limited.
32 */
33
34// Called OnePaneActivityController in Gmail.
35public final class TwoPaneController extends AbstractActivityController {
36    private boolean mJumpToFirstConversation;
37    private TwoPaneLayout mLayout;
38
39    /**
40     * @param activity
41     * @param viewMode
42     */
43    public TwoPaneController(MailActivity activity, ViewMode viewMode) {
44        super(activity, viewMode);
45        // TODO(viki): Auto-generated constructor stub
46    }
47
48    /**
49     * Display the conversation list fragment.
50     * @param show
51     */
52    private void initializeConversationListFragment(boolean show) {
53        if (show) {
54            mViewMode.enterConversationListMode();
55        }
56        FragmentTransaction fragmentTransaction = mActivity.getFragmentManager().beginTransaction();
57        // Use cross fading animation.
58        fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
59        Fragment conversationListFragment = ConversationListFragment
60                .newInstance(mConvListContext);
61        fragmentTransaction.replace(R.id.conversation_list_pane, conversationListFragment);
62        fragmentTransaction.commitAllowingStateLoss();
63    }
64
65    @Override
66    protected boolean isConversationListVisible() {
67        // TODO(viki): Auto-generated method stub
68        return false;
69    }
70
71    @Override
72    public void showConversationList(ConversationListContext context) {
73        initializeConversationListFragment(true);
74    }
75
76    @Override
77    public void showFolderList() {
78        // TODO: auto-generated method stub.
79    }
80
81    @Override
82    public boolean onCreate(Bundle savedState) {
83        mActivity.setContentView(R.layout.two_pane_activity);
84
85        mLayout = (TwoPaneLayout) mActivity.findViewById(R.id.two_pane_activity);
86        mLayout.initializeLayout(mActivity.getApplicationContext());
87
88        // The tablet layout needs to refer to mode changes.
89        mViewMode.addListener(mLayout);
90        // The activity controller needs to listen to layout changes.
91        mLayout.setListener(this);
92
93        final boolean isParentInitialized = super.onCreate(savedState);
94        if (isParentInitialized && savedState == null) {
95            // Show a Label list, in the real application
96            // renderLabelList();
97            // In our case, we show a conversation list for everything.
98        }
99        return isParentInitialized;
100    }
101
102    @Override
103    public void onViewModeChanged(int newMode) {
104        super.onViewModeChanged(newMode);
105        if (newMode != ViewMode.CONVERSATION) {
106            // Clear this flag if the user jumps out of conversation mode
107            // before a load completes.
108            mJumpToFirstConversation = false;
109        }
110    }
111
112    @Override
113    public void resetActionBarIcon() {
114        if (mViewMode.getMode() == ViewMode.CONVERSATION_LIST) {
115            mActionBarView.removeBackButton();
116        } else {
117            mActionBarView.setBackButton();
118        }
119    }
120
121}
122