From 54d88f7678387a6eb871ec2dccd36af4ff35b1fe Mon Sep 17 00:00:00 2001
From: Deepanshu Gupta <deepanshu@google.com>
Date: Tue, 10 Sep 2013 15:39:41 -0700
Subject: Fix ClassCastException when rendering ListView
Bug: b.android.com/59300
Change-Id: Ia350adb3308daa8170bff755302760790163c811
---
.../bridge/impl/binding/AdapterHelper.java | 148 ++++++++++++
.../layoutlib/bridge/impl/binding/AdapterItem.java | 74 ++++++
.../layoutlib/bridge/impl/binding/BaseAdapter.java | 247 ---------------------
.../layoutlib/bridge/impl/binding/FakeAdapter.java | 24 +-
.../bridge/impl/binding/FakeExpandableAdapter.java | 50 ++++-
5 files changed, 285 insertions(+), 258 deletions(-)
create mode 100644 tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/AdapterHelper.java
create mode 100644 tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/AdapterItem.java
delete mode 100644 tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/BaseAdapter.java
(limited to 'tools')
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/AdapterHelper.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/AdapterHelper.java
new file mode 100644
index 0000000..6c998af
--- /dev/null
+++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/AdapterHelper.java
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2013 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.layoutlib.bridge.impl.binding;
+
+import com.android.ide.common.rendering.api.DataBindingItem;
+import com.android.ide.common.rendering.api.IProjectCallback;
+import com.android.ide.common.rendering.api.LayoutLog;
+import com.android.ide.common.rendering.api.ResourceReference;
+import com.android.ide.common.rendering.api.IProjectCallback.ViewAttribute;
+import com.android.layoutlib.bridge.Bridge;
+import com.android.layoutlib.bridge.android.BridgeContext;
+import com.android.layoutlib.bridge.impl.RenderAction;
+import com.android.util.Pair;
+
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.Checkable;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+/**
+ * A Helper class to do fake data binding in {@link AdapterView} objects.
+ */
+@SuppressWarnings("deprecation")
+public class AdapterHelper {
+
+ static Pair<View, Boolean> getView(AdapterItem item, AdapterItem parentItem, ViewGroup parent,
+ IProjectCallback callback, ResourceReference adapterRef, boolean skipCallbackParser) {
+ // we don't care about recycling here because we never scroll.
+ DataBindingItem dataBindingItem = item.getDataBindingItem();
+
+ BridgeContext context = RenderAction.getCurrentContext();
+
+ Pair<View, Boolean> pair = context.inflateView(dataBindingItem.getViewReference(),
+ parent, false /*attachToRoot*/, skipCallbackParser);
+
+ View view = pair.getFirst();
+ skipCallbackParser |= pair.getSecond();
+
+ if (view != null) {
+ fillView(context, view, item, parentItem, callback, adapterRef);
+ } else {
+ // create a text view to display an error.
+ TextView tv = new TextView(context);
+ tv.setText("Unable to find layout: " + dataBindingItem.getViewReference().getName());
+ view = tv;
+ }
+
+ return Pair.of(view, skipCallbackParser);
+ }
+
+ private static void fillView(BridgeContext context, View view, AdapterItem item,
+ AdapterItem parentItem, IProjectCallback callback, ResourceReference adapterRef) {
+ if (view instanceof ViewGroup) {
+ ViewGroup group = (ViewGroup) view;
+ final int count = group.getChildCount();
+ for (int i = 0 ; i < count ; i++) {
+ fillView(context, group.getChildAt(i), item, parentItem, callback, adapterRef);
+ }
+ } else {
+ int id = view.getId();
+ if (id != 0) {
+ ResourceReference resolvedRef = context.resolveId(id);
+ if (resolvedRef != null) {
+ int fullPosition = item.getFullPosition();
+ int positionPerType = item.getPositionPerType();
+ int fullParentPosition = parentItem != null ? parentItem.getFullPosition() : 0;
+ int parentPositionPerType = parentItem != null ?
+ parentItem.getPositionPerType() : 0;
+
+ if (view instanceof TextView) {
+ TextView tv = (TextView) view;
+ Object value = callback.getAdapterItemValue(
+ adapterRef, context.getViewKey(view),
+ item.getDataBindingItem().getViewReference(),
+ fullPosition, positionPerType,
+ fullParentPosition, parentPositionPerType,
+ resolvedRef, ViewAttribute.TEXT, tv.getText().toString());
+ if (value != null) {
+ if (value.getClass() != ViewAttribute.TEXT.getAttributeClass()) {
+ Bridge.getLog().error(LayoutLog.TAG_BROKEN, String.format(
+ "Wrong Adapter Item value class for TEXT. Expected String, got %s",
+ value.getClass().getName()), null);
+ } else {
+ tv.setText((String) value);
+ }
+ }
+ }
+
+ if (view instanceof Checkable) {
+ Checkable cb = (Checkable) view;
+
+ Object value = callback.getAdapterItemValue(
+ adapterRef, context.getViewKey(view),
+ item.getDataBindingItem().getViewReference(),
+ fullPosition, positionPerType,
+ fullParentPosition, parentPositionPerType,
+ resolvedRef, ViewAttribute.IS_CHECKED, cb.isChecked());
+ if (value != null) {
+ if (value.getClass() != ViewAttribute.IS_CHECKED.getAttributeClass()) {
+ Bridge.getLog().error(LayoutLog.TAG_BROKEN, String.format(
+ "Wrong Adapter Item value class for TEXT. Expected Boolean, got %s",
+ value.getClass().getName()), null);
+ } else {
+ cb.setChecked((Boolean) value);
+ }
+ }
+ }
+
+ if (view instanceof ImageView) {
+ ImageView iv = (ImageView) view;
+
+ Object value = callback.getAdapterItemValue(
+ adapterRef, context.getViewKey(view),
+ item.getDataBindingItem().getViewReference(),
+ fullPosition, positionPerType,
+ fullParentPosition, parentPositionPerType,
+ resolvedRef, ViewAttribute.SRC, iv.getDrawable());
+ if (value != null) {
+ if (value.getClass() != ViewAttribute.SRC.getAttributeClass()) {
+ Bridge.getLog().error(LayoutLog.TAG_BROKEN, String.format(
+ "Wrong Adapter Item value class for TEXT. Expected Boolean, got %s",
+ value.getClass().getName()), null);
+ } else {
+ // FIXME
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+}
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/AdapterItem.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/AdapterItem.java
new file mode 100644
index 0000000..8e28dba
--- /dev/null
+++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/AdapterItem.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2013 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.layoutlib.bridge.impl.binding;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import com.android.ide.common.rendering.api.DataBindingItem;
+
+/**
+ * This is the items provided by the adapter. They are dynamically generated.
+ */
+final class AdapterItem {
+ private final DataBindingItem mItem;
+ private final int mType;
+ private final int mFullPosition;
+ private final int mPositionPerType;
+ private List<AdapterItem> mChildren;
+
+ protected AdapterItem(DataBindingItem item, int type, int fullPosition,
+ int positionPerType) {
+ mItem = item;
+ mType = type;
+ mFullPosition = fullPosition;
+ mPositionPerType = positionPerType;
+ }
+
+ void addChild(AdapterItem child) {
+ if (mChildren == null) {
+ mChildren = new ArrayList<AdapterItem>();
+ }
+
+ mChildren.add(child);
+ }
+
+ List<AdapterItem> getChildren() {
+ if (mChildren != null) {
+ return mChildren;
+ }
+
+ return Collections.emptyList();
+ }
+
+ int getType() {
+ return mType;
+ }
+
+ int getFullPosition() {
+ return mFullPosition;
+ }
+
+ int getPositionPerType() {
+ return mPositionPerType;
+ }
+
+ DataBindingItem getDataBindingItem() {
+ return mItem;
+ }
+}
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/BaseAdapter.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/BaseAdapter.java
deleted file mode 100644
index e0414fe..0000000
--- a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/BaseAdapter.java
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * Copyright (C) 2011 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.layoutlib.bridge.impl.binding;
-
-import com.android.ide.common.rendering.api.AdapterBinding;
-import com.android.ide.common.rendering.api.DataBindingItem;
-import com.android.ide.common.rendering.api.IProjectCallback;
-import com.android.ide.common.rendering.api.LayoutLog;
-import com.android.ide.common.rendering.api.ResourceReference;
-import com.android.ide.common.rendering.api.IProjectCallback.ViewAttribute;
-import com.android.layoutlib.bridge.Bridge;
-import com.android.layoutlib.bridge.android.BridgeContext;
-import com.android.layoutlib.bridge.impl.RenderAction;
-import com.android.util.Pair;
-
-import android.database.DataSetObserver;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.AdapterView;
-import android.widget.Checkable;
-import android.widget.ImageView;
-import android.widget.TextView;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-/**
- * Base adapter to do fake data binding in {@link AdapterView} objects.
- */
-public class BaseAdapter {
-
- /**
- * This is the items provided by the adapter. They are dynamically generated.
- */
- protected final static class AdapterItem {
- private final DataBindingItem mItem;
- private final int mType;
- private final int mFullPosition;
- private final int mPositionPerType;
- private List<AdapterItem> mChildren;
-
- protected AdapterItem(DataBindingItem item, int type, int fullPosition,
- int positionPerType) {
- mItem = item;
- mType = type;
- mFullPosition = fullPosition;
- mPositionPerType = positionPerType;
- }
-
- void addChild(AdapterItem child) {
- if (mChildren == null) {
- mChildren = new ArrayList<AdapterItem>();
- }
-
- mChildren.add(child);
- }
-
- List<AdapterItem> getChildren() {
- if (mChildren != null) {
- return mChildren;
- }
-
- return Collections.emptyList();
- }
-
- int getType() {
- return mType;
- }
-
- int getFullPosition() {
- return mFullPosition;
- }
-
- int getPositionPerType() {
- return mPositionPerType;
- }
-
- DataBindingItem getDataBindingItem() {
- return mItem;
- }
- }
-
- private final AdapterBinding mBinding;
- private final IProjectCallback mCallback;
- private final ResourceReference mAdapterRef;
- private boolean mSkipCallbackParser = false;
-
- protected final List<AdapterItem> mItems = new ArrayList<AdapterItem>();
-
- protected BaseAdapter(ResourceReference adapterRef, AdapterBinding binding,
- IProjectCallback callback) {
- mAdapterRef = adapterRef;
- mBinding = binding;
- mCallback = callback;
- }
-
- // ------- Some Adapter method used by all children classes.
-
- public boolean areAllItemsEnabled() {
- return true;
- }
-
- public boolean hasStableIds() {
- return true;
- }
-
- public boolean isEmpty() {
- return mItems.size() == 0;
- }
-
- public void registerDataSetObserver(DataSetObserver observer) {
- // pass
- }
-
- public void unregisterDataSetObserver(DataSetObserver observer) {
- // pass
- }
-
- // -------
-
-
- protected AdapterBinding getBinding() {
- return mBinding;
- }
-
- protected View getView(AdapterItem item, AdapterItem parentItem, View convertView,
- ViewGroup parent) {
- // we don't care about recycling here because we never scroll.
- DataBindingItem dataBindingItem = item.getDataBindingItem();
-
- BridgeContext context = RenderAction.getCurrentContext();
-
- Pair<View, Boolean> pair = context.inflateView(dataBindingItem.getViewReference(),
- parent, false /*attachToRoot*/, mSkipCallbackParser);
-
- View view = pair.getFirst();
- mSkipCallbackParser |= pair.getSecond();
-
- if (view != null) {
- fillView(context, view, item, parentItem);
- } else {
- // create a text view to display an error.
- TextView tv = new TextView(context);
- tv.setText("Unable to find layout: " + dataBindingItem.getViewReference().getName());
- view = tv;
- }
-
- return view;
- }
-
- private void fillView(BridgeContext context, View view, AdapterItem item,
- AdapterItem parentItem) {
- if (view instanceof ViewGroup) {
- ViewGroup group = (ViewGroup) view;
- final int count = group.getChildCount();
- for (int i = 0 ; i < count ; i++) {
- fillView(context, group.getChildAt(i), item, parentItem);
- }
- } else {
- int id = view.getId();
- if (id != 0) {
- ResourceReference resolvedRef = context.resolveId(id);
- if (resolvedRef != null) {
- int fullPosition = item.getFullPosition();
- int positionPerType = item.getPositionPerType();
- int fullParentPosition = parentItem != null ? parentItem.getFullPosition() : 0;
- int parentPositionPerType = parentItem != null ?
- parentItem.getPositionPerType() : 0;
-
- if (view instanceof TextView) {
- TextView tv = (TextView) view;
- Object value = mCallback.getAdapterItemValue(
- mAdapterRef, context.getViewKey(view),
- item.getDataBindingItem().getViewReference(),
- fullPosition, positionPerType,
- fullParentPosition, parentPositionPerType,
- resolvedRef, ViewAttribute.TEXT, tv.getText().toString());
- if (value != null) {
- if (value.getClass() != ViewAttribute.TEXT.getAttributeClass()) {
- Bridge.getLog().error(LayoutLog.TAG_BROKEN, String.format(
- "Wrong Adapter Item value class for TEXT. Expected String, got %s",
- value.getClass().getName()), null);
- } else {
- tv.setText((String) value);
- }
- }
- }
-
- if (view instanceof Checkable) {
- Checkable cb = (Checkable) view;
-
- Object value = mCallback.getAdapterItemValue(
- mAdapterRef, context.getViewKey(view),
- item.getDataBindingItem().getViewReference(),
- fullPosition, positionPerType,
- fullParentPosition, parentPositionPerType,
- resolvedRef, ViewAttribute.IS_CHECKED, cb.isChecked());
- if (value != null) {
- if (value.getClass() != ViewAttribute.IS_CHECKED.getAttributeClass()) {
- Bridge.getLog().error(LayoutLog.TAG_BROKEN, String.format(
- "Wrong Adapter Item value class for TEXT. Expected Boolean, got %s",
- value.getClass().getName()), null);
- } else {
- cb.setChecked((Boolean) value);
- }
- }
- }
-
- if (view instanceof ImageView) {
- ImageView iv = (ImageView) view;
-
- Object value = mCallback.getAdapterItemValue(
- mAdapterRef, context.getViewKey(view),
- item.getDataBindingItem().getViewReference(),
- fullPosition, positionPerType,
- fullParentPosition, parentPositionPerType,
- resolvedRef, ViewAttribute.SRC, iv.getDrawable());
- if (value != null) {
- if (value.getClass() != ViewAttribute.SRC.getAttributeClass()) {
- Bridge.getLog().error(LayoutLog.TAG_BROKEN, String.format(
- "Wrong Adapter Item value class for TEXT. Expected Boolean, got %s",
- value.getClass().getName()), null);
- } else {
- // FIXME
- }
- }
- }
- }
- }
- }
- }
-}
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/FakeAdapter.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/FakeAdapter.java
index 22570b9..9a13f5a 100644
--- a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/FakeAdapter.java
+++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/FakeAdapter.java
@@ -20,10 +20,12 @@ import com.android.ide.common.rendering.api.AdapterBinding;
import com.android.ide.common.rendering.api.DataBindingItem;
import com.android.ide.common.rendering.api.IProjectCallback;
import com.android.ide.common.rendering.api.ResourceReference;
+import com.android.util.Pair;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
+import android.widget.BaseAdapter;
import android.widget.ListAdapter;
import android.widget.SpinnerAdapter;
@@ -35,17 +37,23 @@ import java.util.List;
* and {@link SpinnerAdapter}.
*
*/
-public class FakeAdapter extends BaseAdapter implements ListAdapter, SpinnerAdapter {
+@SuppressWarnings("deprecation")
+public class FakeAdapter extends BaseAdapter {
// don't use a set because the order is important.
private final List<ResourceReference> mTypes = new ArrayList<ResourceReference>();
+ private final IProjectCallback mCallback;
+ private final ResourceReference mAdapterRef;
+ private final List<AdapterItem> mItems = new ArrayList<AdapterItem>();
+ private boolean mSkipCallbackParser = false;
public FakeAdapter(ResourceReference adapterRef, AdapterBinding binding,
IProjectCallback callback) {
- super(adapterRef, binding, callback);
+ mAdapterRef = adapterRef;
+ mCallback = callback;
- final int repeatCount = getBinding().getRepeatCount();
- final int itemCount = getBinding().getItemCount();
+ final int repeatCount = binding.getRepeatCount();
+ final int itemCount = binding.getItemCount();
// Need an array to count for each type.
// This is likely too big, but is the max it can be.
@@ -54,7 +62,7 @@ public class FakeAdapter extends BaseAdapter implements ListAdapter, SpinnerAdap
// We put several repeating sets.
for (int r = 0 ; r < repeatCount ; r++) {
// loop on the type of list items, and add however many for each type.
- for (DataBindingItem dataBindingItem : getBinding()) {
+ for (DataBindingItem dataBindingItem : binding) {
ResourceReference viewRef = dataBindingItem.getViewReference();
int typeIndex = mTypes.indexOf(viewRef);
if (typeIndex == -1) {
@@ -103,7 +111,11 @@ public class FakeAdapter extends BaseAdapter implements ListAdapter, SpinnerAdap
public View getView(int position, View convertView, ViewGroup parent) {
// we don't care about recycling here because we never scroll.
AdapterItem item = mItems.get(position);
- return getView(item, null /*parentGroup*/, convertView, parent);
+ Pair<View, Boolean> pair = AdapterHelper.getView(item, null /*parentGroup*/, parent,
+ mCallback, mAdapterRef, mSkipCallbackParser);
+ mSkipCallbackParser = pair.getSecond();
+ return pair.getFirst();
+
}
@Override
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/FakeExpandableAdapter.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/FakeExpandableAdapter.java
index 199e040..e539579 100644
--- a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/FakeExpandableAdapter.java
+++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/binding/FakeExpandableAdapter.java
@@ -20,7 +20,9 @@ import com.android.ide.common.rendering.api.AdapterBinding;
import com.android.ide.common.rendering.api.DataBindingItem;
import com.android.ide.common.rendering.api.IProjectCallback;
import com.android.ide.common.rendering.api.ResourceReference;
+import com.android.util.Pair;
+import android.database.DataSetObserver;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ExpandableListAdapter;
@@ -29,8 +31,14 @@ import android.widget.HeterogeneousExpandableList;
import java.util.ArrayList;
import java.util.List;
-public class FakeExpandableAdapter extends BaseAdapter implements ExpandableListAdapter,
- HeterogeneousExpandableList {
+@SuppressWarnings("deprecation")
+public class FakeExpandableAdapter implements ExpandableListAdapter, HeterogeneousExpandableList {
+
+ private final IProjectCallback mCallback;
+ private final ResourceReference mAdapterRef;
+ private boolean mSkipCallbackParser = false;
+
+ protected final List<AdapterItem> mItems = new ArrayList<AdapterItem>();
// don't use a set because the order is important.
private final List<ResourceReference> mGroupTypes = new ArrayList<ResourceReference>();
@@ -38,7 +46,8 @@ public class FakeExpandableAdapter extends BaseAdapter implements ExpandableList
public FakeExpandableAdapter(ResourceReference adapterRef, AdapterBinding binding,
IProjectCallback callback) {
- super(adapterRef, binding, callback);
+ mAdapterRef = adapterRef;
+ mCallback = callback;
createItems(binding, binding.getItemCount(), binding.getRepeatCount(), mGroupTypes, 1);
}
@@ -125,7 +134,10 @@ public class FakeExpandableAdapter extends BaseAdapter implements ExpandableList
ViewGroup parent) {
// we don't care about recycling here because we never scroll.
AdapterItem item = mItems.get(groupPosition);
- return getView(item, null /*parentItem*/, convertView, parent);
+ Pair<View, Boolean> pair = AdapterHelper.getView(item, null /*parentItem*/, parent,
+ mCallback, mAdapterRef, mSkipCallbackParser);
+ mSkipCallbackParser = pair.getSecond();
+ return pair.getFirst();
}
@Override
@@ -134,7 +146,10 @@ public class FakeExpandableAdapter extends BaseAdapter implements ExpandableList
// we don't care about recycling here because we never scroll.
AdapterItem parentItem = mItems.get(groupPosition);
AdapterItem item = getChildItem(groupPosition, childPosition);
- return getView(item, parentItem, convertView, parent);
+ Pair<View, Boolean> pair = AdapterHelper.getView(item, parentItem, parent, mCallback,
+ mAdapterRef, mSkipCallbackParser);
+ mSkipCallbackParser = pair.getSecond();
+ return pair.getFirst();
}
@Override
@@ -172,6 +187,31 @@ public class FakeExpandableAdapter extends BaseAdapter implements ExpandableList
// pass
}
+ @Override
+ public void registerDataSetObserver(DataSetObserver observer) {
+ // pass
+ }
+
+ @Override
+ public void unregisterDataSetObserver(DataSetObserver observer) {
+ // pass
+ }
+
+ @Override
+ public boolean hasStableIds() {
+ return true;
+ }
+
+ @Override
+ public boolean areAllItemsEnabled() {
+ return true;
+ }
+
+ @Override
+ public boolean isEmpty() {
+ return mItems.isEmpty();
+ }
+
// ---- HeterogeneousExpandableList
@Override
--
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