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/*
* 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 static com.android.SdkConstants.ANDROID_URI;
import static com.android.SdkConstants.ATTR_ADJUST_VIEW_BOUNDS;
import static com.android.SdkConstants.ATTR_BACKGROUND;
import static com.android.SdkConstants.ATTR_CONTENT_DESCRIPTION;
import static com.android.SdkConstants.ATTR_CROP_TO_PADDING;
import static com.android.SdkConstants.ATTR_LAYOUT_HEIGHT;
import static com.android.SdkConstants.ATTR_LAYOUT_WIDTH;
import static com.android.SdkConstants.ATTR_SCALE_TYPE;
import static com.android.SdkConstants.ATTR_SRC;
import static com.android.SdkConstants.ATTR_SRC_COMPAT;
import static com.android.SdkConstants.AUTO_URI;
import static com.android.SdkConstants.SAMPLE_PREFIX;
import static com.android.SdkConstants.TOOLS_NS_NAME_PREFIX;
import static com.android.SdkConstants.TOOLS_SAMPLE_PREFIX;
import static com.android.SdkConstants.TOOLS_URI;
import static com.android.SdkConstants.VALUE_WRAP_CONTENT;
import com.android.ide.common.rendering.api.ResourceNamespace;
import com.android.resources.ResourceType;
import com.android.tools.idea.common.api.InsertType;
import com.android.tools.idea.common.command.NlWriteCommandActionUtil;
import com.android.tools.idea.common.model.NlComponent;
import com.android.tools.idea.common.model.NlModel;
import com.android.tools.idea.common.scene.SceneComponent;
import com.android.tools.idea.common.scene.target.ComponentAssistantViewAction;
import com.android.tools.idea.res.PredefinedSampleDataResourceRepository;
import com.android.tools.idea.res.SampleDataResourceItem;
import com.android.tools.idea.uibuilder.api.ViewEditor;
import com.android.tools.idea.uibuilder.api.ViewHandler;
import com.android.tools.idea.uibuilder.api.XmlType;
import com.android.tools.idea.uibuilder.api.actions.ViewAction;
import com.android.tools.idea.uibuilder.handlers.actions.PickDrawableViewAction;
import com.android.tools.idea.uibuilder.handlers.actions.ScaleTypesViewActionMenu;
import com.android.tools.idea.uibuilder.handlers.assistant.ImageViewAssistant;
import com.android.tools.idea.uibuilder.model.NlModelHelperKt;
import com.android.tools.idea.uibuilder.assistant.ComponentAssistantFactory;
import com.android.xml.XmlBuilder;
import com.google.common.collect.ImmutableList;
import java.util.EnumSet;
import java.util.List;
import org.intellij.lang.annotations.Language;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* Handler for the {@code <ImageView>} widget
*/
public class ImageViewHandler extends ViewHandler {
@Override
@NotNull
public List<String> getInspectorProperties() {
return ImmutableList.of(
ATTR_SRC,
TOOLS_NS_NAME_PREFIX + ATTR_SRC,
ATTR_CONTENT_DESCRIPTION,
ATTR_BACKGROUND,
ATTR_SCALE_TYPE,
ATTR_ADJUST_VIEW_BOUNDS,
ATTR_CROP_TO_PADDING);
}
@Override
@NotNull
public String getPreferredProperty() {
return ATTR_SRC;
}
@Override
@NotNull
@Language("XML")
public String getXml(@NotNull String tagName, @NotNull XmlType xmlType) {
return new XmlBuilder()
.startTag(tagName)
.androidAttribute(ATTR_SRC, getSampleImageSrc())
.androidAttribute(ATTR_LAYOUT_WIDTH, VALUE_WRAP_CONTENT)
.androidAttribute(ATTR_LAYOUT_HEIGHT, VALUE_WRAP_CONTENT)
.endTag(tagName)
.toString();
}
@Override
public boolean onCreate(@Nullable NlComponent parent,
@NotNull NlComponent newChild,
@NotNull InsertType insertType) {
if (insertType == InsertType.CREATE) { // NOT InsertType.CREATE_PREVIEW
String src = getSrcAttribute(newChild);
if (src != null && !src.equals(getSampleImageSrc())) {
setSrcAttribute(newChild, src);
return true;
}
return showImageChooser(newChild);
}
// Fallback if dismissed or during previews etc
if (insertType.isCreate()) {
setSrcAttribute(newChild, getSampleImageSrc());
}
return true;
}
private boolean showImageChooser(@NotNull NlComponent component) {
String src = ViewEditor.displayResourceInput(component.getModel(), EnumSet.of(ResourceType.DRAWABLE, ResourceType.MIPMAP), true);
if (src != null) {
// If the selected item was a sample data item, set in the tools attributes src and not in the regular attribute
if (src.startsWith(SAMPLE_PREFIX) || src.startsWith(TOOLS_SAMPLE_PREFIX )) {
setToolsSrc(component, src);
setSrcAttribute(component, null);
}
else {
setSrcAttribute(component, src);
}
return true;
}
// Remove the view; the insertion was canceled
return false;
}
/**
* 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
*/
@NotNull
public String getSampleImageSrc() {
// Builtin graphics available since v1:
return TOOLS_SAMPLE_PREFIX + "avatars"; //$NON-NLS-1$
}
private static String getSrcAttribute(@NotNull NlComponent newChild) {
String src = newChild.getAttribute(ANDROID_URI, ATTR_SRC);
if (src == null) {
src = newChild.getAttribute(AUTO_URI, ATTR_SRC_COMPAT);
}
return src;
}
public void setSrcAttribute(@NotNull NlComponent component, @Nullable String imageSource) {
NlWriteCommandActionUtil.run(component, "", () -> {
if (shouldUseSrcCompat(component.getModel())) {
component.setAttribute(ANDROID_URI, ATTR_SRC, null);
component.setAttribute(AUTO_URI, ATTR_SRC_COMPAT, imageSource);
}
else {
component.setAttribute(ANDROID_URI, ATTR_SRC, imageSource);
component.setAttribute(AUTO_URI, ATTR_SRC_COMPAT, null);
}
});
}
public void setToolsSrc(@NotNull NlComponent component, @Nullable SampleDataResourceItem item, int resourceValueIndex) {
if (item != null) {
String suffix = resourceValueIndex >= 0 ? "[" + resourceValueIndex + "]" : "";
setToolsSrc(component, getResourcePrefix(item.getNamespace()) + item.getName() + suffix);
}
else {
setToolsSrc(component, null);
}
}
public void setToolsSrc(@NotNull NlComponent component, @Nullable String value) {
String attr = shouldUseSrcCompat(component.getModel()) ? ATTR_SRC_COMPAT : ATTR_SRC;
NlWriteCommandActionUtil.run(component, "Set sample source", () -> component.setAttribute(TOOLS_URI, attr, value));
}
@Nullable
public String getToolsSrc(@NotNull NlComponent component) {
String attr = shouldUseSrcCompat(component.getModel()) ? ATTR_SRC_COMPAT : ATTR_SRC;
return component.getAttribute(TOOLS_URI, attr);
}
@NotNull
private static String getResourcePrefix(ResourceNamespace namespace) {
String prefix;
if (PredefinedSampleDataResourceRepository.NAMESPACE.equals(namespace)) {
prefix = TOOLS_SAMPLE_PREFIX;
}
else if (ResourceNamespace.TODO().equals(namespace)) {
prefix = SAMPLE_PREFIX;
}
else {
String packageName = namespace.getPackageName();
if (packageName != null) {
prefix = "@" + packageName + ":" + SAMPLE_PREFIX.substring(1);
}
else {
prefix = SAMPLE_PREFIX;
}
}
return prefix;
}
public static boolean shouldUseSrcCompat(@NotNull NlModel model) {
return NlModelHelperKt.moduleDependsOnAppCompat(model) &&
NlModelHelperKt.currentActivityIsDerivedFromAppCompatActivity(model);
}
@Nullable
private ComponentAssistantFactory getComponentAssistant(@NotNull NlComponent component) {
return (context) -> new ImageViewAssistant(context, this).getComponent();
}
@Override
public boolean addPopupMenuActions(@NotNull SceneComponent component, @NotNull List<ViewAction> actions) {
boolean cacheable = super.addPopupMenuActions(component, actions);
actions.add(new ComponentAssistantViewAction(this::getComponentAssistant));
return cacheable;
}
@Override
public List<ViewAction> getPropertyActions(@NotNull List<NlComponent> components) {
return ImmutableList.of(new PickDrawableViewAction(ANDROID_URI, ATTR_SRC),
new ScaleTypesViewActionMenu(ANDROID_URI, ATTR_SCALE_TYPE));
}
}
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