1 files changed, 125 insertions, 0 deletions
diff --git a/java/com/android/dialer/callcomposer/CallComposerFragment.java b/java/com/android/dialer/callcomposer/CallComposerFragment.java
new file mode 100644
index 000000000..d6f944955
--- /dev/null
+++ b/java/com/android/dialer/callcomposer/CallComposerFragment.java
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2016 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.dialer.callcomposer;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewTreeObserver.OnGlobalLayoutListener;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.FragmentUtils;
+import com.android.dialer.common.LogUtil;
+
+/** Base fragment with fields and methods needed for all fragments in the call compose UI. */
+public abstract class CallComposerFragment extends Fragment {
+
+  protected static final int CAMERA_PERMISSION = 1;
+  protected static final int STORAGE_PERMISSION = 2;
+
+  private static final String LOCATION_KEY = "location_key";
+  public static final int CONTENT_TOP_UNSET = Integer.MAX_VALUE;
+
+  private View topView;
+  private int contentTopPx = CONTENT_TOP_UNSET;
+  private CallComposerListener testListener;
+
+  @Nullable
+  @Override
+  public View onCreateView(
+      LayoutInflater layoutInflater, @Nullable ViewGroup viewGroup, @Nullable Bundle bundle) {
+    View view = super.onCreateView(layoutInflater, viewGroup, bundle);
+    Assert.isNotNull(topView);
+    return view;
+  }
+
+  @Override
+  public void onAttach(Context context) {
+    super.onAttach(context);
+    if (!(context instanceof CallComposerListener) && testListener == null) {
+      LogUtil.e(
+          "CallComposerFragment.onAttach",
+          "Container activity must implement CallComposerListener.");
+      Assert.fail();
+    }
+  }
+
+  /** Call this method to declare which view is located at the top of the fragment's layout. */
+  public void setTopView(View view) {
+    topView = view;
+    // For each fragment that extends CallComposerFragment, the heights may vary and since
+    // ViewPagers cannot have their height set to wrap_content, we have to adjust the top of our
+    // container to match the top of the fragment. This listener populates {@code contentTopPx} as
+    // it's available.
+    topView
+        .getViewTreeObserver()
+        .addOnGlobalLayoutListener(
+            new OnGlobalLayoutListener() {
+              @Override
+              public void onGlobalLayout() {
+                topView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                contentTopPx = topView.getTop();
+              }
+            });
+  }
+
+  public int getContentTopPx() {
+    return contentTopPx;
+  }
+
+  public void setParentForTesting(CallComposerListener listener) {
+    testListener = listener;
+  }
+
+  public CallComposerListener getListener() {
+    if (testListener != null) {
+      return testListener;
+    }
+    return FragmentUtils.getParentUnsafe(this, CallComposerListener.class);
+  }
+
+  @Override
+  public void onSaveInstanceState(Bundle outState) {
+    super.onSaveInstanceState(outState);
+    outState.putInt(LOCATION_KEY, contentTopPx);
+  }
+
+  @Override
+  public void onViewStateRestored(Bundle savedInstanceState) {
+    super.onViewStateRestored(savedInstanceState);
+    if (savedInstanceState != null) {
+      contentTopPx = savedInstanceState.getInt(LOCATION_KEY);
+    }
+  }
+
+  public abstract boolean shouldHide();
+
+  /** Interface used to listen to CallComposeFragments */
+  public interface CallComposerListener {
+    /** Let the listener know when a call is ready to be composed. */
+    void composeCall(CallComposerFragment fragment);
+
+    /** Let the listener know when the layout has changed to full screen */
+    void showFullscreen(boolean show);
+
+    /** True is the listener is in fullscreen. */
+    boolean isFullscreen();
+  }
+}