Java tutorial
/* * 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.tools.idea.uibuilder.handlers.menu; import com.android.tools.idea.uibuilder.api.DragHandler; import com.android.tools.idea.uibuilder.api.DragType; import com.android.tools.idea.uibuilder.api.InsertType; import com.android.tools.idea.uibuilder.api.ViewEditor; import com.android.tools.idea.uibuilder.model.NlComponent; import com.google.common.base.Strings; import com.google.common.collect.ImmutableList; import org.jetbrains.annotations.NotNull; import org.jetbrains.annotations.Nullable; import java.util.List; import static com.android.SdkConstants.*; public final class ItemHandler extends MenuHandler { @Nullable @Override public DragHandler createDragHandler(@NotNull ViewEditor editor, @NotNull NlComponent group, @NotNull List<NlComponent> items, @NotNull DragType type) { return null; } @Override public boolean onCreate(@NotNull ViewEditor editor, @Nullable NlComponent parent, @NotNull NlComponent newChild, @NotNull InsertType type) { if (SearchItemHandler.handles(newChild)) { return new SearchItemHandler().onCreate(editor, parent, newChild, type); } else if (SwitchItemHandler.handles(newChild)) { return new SwitchItemHandler().onCreate(editor, parent, newChild, type); } else { return super.onCreate(editor, parent, newChild, type); } } @Override public boolean acceptsChild(@NotNull NlComponent parent, @NotNull NlComponent newChild) { return newChild.getTagName().equals(TAG_MENU); } @NotNull @Override public String getTitle(@NotNull NlComponent item) { return Strings.nullToEmpty(item.getAndroidAttribute(ATTR_TITLE)); } @NotNull @Override public List<String> getInspectorProperties() { return ImmutableList.of(ATTR_ID, ATTR_TITLE, ATTR_ICON, ATTR_SHOW_AS_ACTION, ATTR_VISIBLE, ATTR_ENABLED, ATTR_CHECKABLE); } }