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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.dialer.callcomposer;
     18 
     19 import android.content.Context;
     20 import android.support.annotation.Nullable;
     21 import android.support.v4.app.Fragment;
     22 import com.android.dialer.common.Assert;
     23 import com.android.dialer.common.FragmentUtils;
     24 import com.android.dialer.common.LogUtil;
     25 
     26 /** Base fragment with fields and methods needed for all fragments in the call compose UI. */
     27 public abstract class CallComposerFragment extends Fragment {
     28 
     29   protected static final int CAMERA_PERMISSION = 1;
     30   protected static final int STORAGE_PERMISSION = 2;
     31 
     32   @Override
     33   public void onAttach(Context context) {
     34     super.onAttach(context);
     35     if (FragmentUtils.getParent(this, CallComposerListener.class) == null) {
     36       LogUtil.e(
     37           "CallComposerFragment.onAttach",
     38           "Container activity must implement CallComposerListener.");
     39       Assert.fail();
     40     }
     41   }
     42 
     43   @Nullable
     44   public CallComposerListener getListener() {
     45     return FragmentUtils.getParent(this, CallComposerListener.class);
     46   }
     47 
     48   public abstract boolean shouldHide();
     49 
     50   public abstract void clearComposer();
     51 
     52   /** Interface used to listen to CallComposeFragments */
     53   public interface CallComposerListener {
     54     /** Let the listener know when a call is ready to be composed. */
     55     void composeCall(CallComposerFragment fragment);
     56 
     57     /** Let the listener know when the layout has changed to full screen */
     58     void showFullscreen(boolean show);
     59 
     60     /** True is the listener is in fullscreen. */
     61     boolean isFullscreen();
     62 
     63     /** True if the layout is in landscape mode. */
     64     boolean isLandscapeLayout();
     65 
     66     /** Tell the listener that call composition is done and we should start the call. */
     67     void sendAndCall();
     68   }
     69 }
     70