| /* |
| * Copyright (C) 2015 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; |
| |
| import com.android.annotations.NonNull; |
| import com.android.annotations.Nullable; |
| import com.android.resources.ResourceType; |
| import com.android.tools.idea.uibuilder.api.InsertType; |
| import com.android.tools.idea.uibuilder.api.ViewEditor; |
| import com.android.tools.idea.uibuilder.api.ViewHandler; |
| import com.android.tools.idea.uibuilder.model.NlComponent; |
| |
| import java.util.EnumSet; |
| |
| import static com.android.SdkConstants.ANDROID_URI; |
| import static com.android.SdkConstants.ATTR_SRC; |
| |
| /** Handler for the {@code <ImageView>} view */ |
| public class ImageViewHandler extends ViewHandler { |
| @Override |
| public boolean onCreate(@NonNull ViewEditor editor, |
| @Nullable NlComponent parent, |
| @NonNull NlComponent newChild, |
| @NonNull InsertType insertType) { |
| if (insertType == InsertType.CREATE) { // NOT InsertType.CREATE_PREVIEW |
| String src = editor.displayResourceInput(EnumSet.of(ResourceType.DRAWABLE), null); |
| if (src != null) { |
| newChild.setAttribute(ANDROID_URI, ATTR_SRC, src); |
| return true; |
| } |
| else { |
| // Remove the view; the insertion was canceled |
| return false; |
| } |
| } |
| |
| // Fallback if dismissed or during previews etc |
| if (insertType.isCreate()) { |
| newChild.setAttribute(ANDROID_URI, ATTR_SRC, getSampleImageSrc()); |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Returns a source attribute value which points to a sample image. This is typically |
| * used to provide an initial image shown on ImageButtons, etc. There is no guarantee |
| * that the source pointed to by this method actually exists. |
| * |
| * @return a source attribute to use for sample images, never null |
| */ |
| public String getSampleImageSrc() { |
| // Builtin graphics available since v1: |
| return "@android:drawable/btn_star"; //$NON-NLS-1$ |
| } |
| } |