Add RecyclerView support. (d345f44a) · Commits · e / os / android_frameworks_base

tools/layoutlib/bridge/src/android/view/BridgeInflater.java

+23 −7

Original line number	Diff line number	Diff line
		@@ -22,9 +22,13 @@ import com.android.ide.common.rendering.api.MergeCookie;
		import com.android.ide.common.rendering.api.ResourceReference;
		import com.android.ide.common.rendering.api.ResourceValue;
		import com.android.layoutlib.bridge.Bridge;
		import com.android.layoutlib.bridge.BridgeConstants;
		import com.android.layoutlib.bridge.android.BridgeContext;
		import com.android.layoutlib.bridge.android.BridgeXmlBlockParser;
		import com.android.layoutlib.bridge.android.support.RecyclerViewUtil;
		import com.android.layoutlib.bridge.android.support.RecyclerViewUtil.LayoutManagerType;
		import com.android.layoutlib.bridge.impl.ParserFactory;
		import com.android.layoutlib.bridge.impl.RenderSessionImpl;
		import com.android.resources.ResourceType;
		import com.android.util.Pair;

		@@ -111,8 +115,7 @@ public final class BridgeInflater extends LayoutInflater {
		} catch (Exception e) {
		// Wrap the real exception in a ClassNotFoundException, so that the calling method
		// can deal with it.
		ClassNotFoundException exception = new ClassNotFoundException("onCreateView", e);
		throw exception;
		throw new ClassNotFoundException("onCreateView", e);
		}

		setupViewInContext(view, attrs);
		@@ -123,7 +126,7 @@ public final class BridgeInflater extends LayoutInflater {
		@Override
		public View createViewFromTag(View parent, String name, AttributeSet attrs,
		boolean inheritContext) {
		View view = null;
		View view;
		try {
		view = super.createViewFromTag(parent, name, attrs, inheritContext);
		} catch (InflateException e) {
		@@ -134,7 +137,7 @@ public final class BridgeInflater extends LayoutInflater {
		// Wrap the real exception in an InflateException so that the calling
		// method can deal with it.
		InflateException exception = new InflateException();
		if (e2.getClass().equals(ClassNotFoundException.class) == false) {
		if (!e2.getClass().equals(ClassNotFoundException.class)) {
		exception.initCause(e2);
		} else {
		exception.initCause(e);
		@@ -184,7 +187,7 @@ public final class BridgeInflater extends LayoutInflater {
		return inflate(bridgeParser, root);
		} catch (Exception e) {
		Bridge.getLog().error(LayoutLog.TAG_RESOURCES_READ,
		"Failed to parse file " + f.getAbsolutePath(), e, null /data/);
		"Failed to parse file " + f.getAbsolutePath(), e, null);

		return null;
		}
		@@ -194,8 +197,7 @@ public final class BridgeInflater extends LayoutInflater {
		return null;
		}

		private View loadCustomView(String name, AttributeSet attrs) throws ClassNotFoundException,
		Exception{
		private View loadCustomView(String name, AttributeSet attrs) throws Exception {
		if (mProjectCallback != null) {
		// first get the classname in case it's not the node name
		if (name.equals("view")) {
		@@ -227,6 +229,20 @@ public final class BridgeInflater extends LayoutInflater {
		if (viewKey != null) {
		bc.addViewKey(view, viewKey);
		}
		if (RenderSessionImpl.isInstanceOf(view, RecyclerViewUtil.CN_RECYCLER_VIEW)) {
		String type = attrs.getAttributeValue(BridgeConstants.NS_RESOURCES,
		BridgeConstants.ATTR_LAYOUT_MANAGER_TYPE);
		if (type != null) {
		LayoutManagerType layoutManagerType = LayoutManagerType.getByDisplayName(type);
		if (layoutManagerType == null) {
		Bridge.getLog().warning(LayoutLog.TAG_UNSUPPORTED,
		"LayoutManager (" + type + ") not found, falling back to " +
		"LinearLayoutManager", null);
		} else {
		bc.addCookie(view, layoutManagerType);
		}
		}
		}
		}
		}

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/BridgeConstants.java

+3 −0

Original line number	Diff line number	Diff line
		@@ -48,4 +48,7 @@ public class BridgeConstants {
		public final static String MATCH_PARENT = "match_parent";
		public final static String FILL_PARENT = "fill_parent";
		public final static String WRAP_CONTENT = "wrap_content";

		/** Attribute in the tools namespace used to specify layout manager for RecyclerView. */
		public static final String ATTR_LAYOUT_MANAGER_TYPE = "layoutManagerType";
		}

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/SessionParamsFlags.java

+2 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,8 @@ public final class SessionParamsFlags {

		public static final SessionParams.Key<String> FLAG_KEY_ROOT_TAG =
		new SessionParams.Key<String>("rootTag", String.class);
		public static final SessionParams.Key<Boolean> FLAG_KEY_RECYCLER_VIEW_SUPPORT =
		new SessionParams.Key<Boolean>("recyclerViewSupport", Boolean.class);

		// Disallow instances.
		private SessionParamsFlags() {}

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/support/RecyclerViewUtil.java

0 → 100644

+206 −0

Original line number	Diff line number	Diff line
		/*
		* 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.layoutlib.bridge.android.support;

		import com.android.annotations.NonNull;
		import com.android.annotations.Nullable;
		import com.android.ide.common.rendering.api.IProjectCallback;
		import com.android.ide.common.rendering.api.LayoutLog;
		import com.android.ide.common.rendering.api.SessionParams;
		import com.android.layoutlib.bridge.Bridge;
		import com.android.layoutlib.bridge.android.BridgeContext;
		import com.android.layoutlib.bridge.android.SessionParamsFlags;

		import android.content.Context;
		import android.view.View;
		import android.widget.LinearLayout;

		import java.lang.reflect.Method;
		import java.util.HashMap;

		import static com.android.layoutlib.bridge.util.ReflectionUtils.*;

		/**
		* Utility class for working with android.support.v7.widget.RecyclerView
		*/
		@SuppressWarnings("SpellCheckingInspection") // for "recycler".
		public class RecyclerViewUtil {

		/**
		* Used by {@link LayoutManagerType}.
		* <p/>
		* Not declared inside the enum, since it needs to be accessible in the constructor.
		*/
		private static final Object CONTEXT = new Object();

		public static final String CN_RECYCLER_VIEW = "android.support.v7.widget.RecyclerView";
		private static final String CN_LAYOUT_MANAGER = CN_RECYCLER_VIEW + "$LayoutManager";
		private static final String CN_ADAPTER = CN_RECYCLER_VIEW + "$Adapter";

		/**
		* Tries to create an Adapter ({@code android.support.v7.widget.RecyclerView.Adapter} and a
		* LayoutManager {@code RecyclerView.LayoutManager} and assign these to the {@code RecyclerView}
		* that is passed.
		* <p/>
		* Any exceptions thrown during the process are logged in {@link Bridge#getLog()}
		*/
		public static void setAdapter(@NonNull View recyclerView, @NonNull BridgeContext context,
		@NonNull SessionParams params) {
		try {
		setLayoutManager(recyclerView, context, params.getProjectCallback());
		Object adapter = createAdapter(params);
		setProperty(recyclerView, CN_ADAPTER, adapter, "setAdapter");
		} catch (ReflectionException e) {
		Bridge.getLog().error(LayoutLog.TAG_BROKEN,
		"Error occured while trying to setup RecyclerView.", e, null);
		}
		}

		private static void setLayoutManager(@NonNull View recyclerView, @NonNull BridgeContext context,
		@NonNull IProjectCallback callback) throws ReflectionException {
		Object cookie = context.getCookie(recyclerView);
		assert cookie == null \|\| cookie instanceof LayoutManagerType;
		if (cookie == null) {
		cookie = LayoutManagerType.getDefault();
		}
		Object layoutManager = createLayoutManager((LayoutManagerType) cookie, context, callback);
		setProperty(recyclerView, CN_LAYOUT_MANAGER, layoutManager, "setLayoutManager");
		}

		@Nullable
		private static Object createLayoutManager(@Nullable LayoutManagerType type,
		@NonNull Context context, @NonNull IProjectCallback callback)
		throws ReflectionException {
		if (type == null) {
		type = LayoutManagerType.getDefault();
		}
		try {
		return callback.loadView(type.getClassName(), type.getSignature(), type.getArgs(context));
		} catch (Exception e) {
		throw new ReflectionException(e);
		}
		}

		@Nullable
		private static Object createAdapter(@NonNull SessionParams params) throws ReflectionException {
		Boolean ideSupport = params.getFlag(SessionParamsFlags.FLAG_KEY_RECYCLER_VIEW_SUPPORT);
		if (ideSupport != Boolean.TRUE) {
		return null;
		}
		try {
		return params.getProjectCallback().loadView(CN_ADAPTER, new Class[0], new Object[0]);
		} catch (Exception e) {
		throw new ReflectionException(e);
		}
		}

		private static void setProperty(@NonNull View recyclerView, @NonNull String propertyClassName,
		@Nullable Object propertyValue, @NonNull String propertySetter)
		throws ReflectionException {
		if (propertyValue != null) {
		Class<?> layoutManagerClass = getClassInstance(propertyValue, propertyClassName);
		Method setLayoutManager = getMethod(recyclerView.getClass(),
		propertySetter, layoutManagerClass);
		if (setLayoutManager != null) {
		invoke(setLayoutManager, recyclerView, propertyValue);
		}
		}
		}

		/**
		* Looks through the class hierarchy of {@code object} at runtime and returns the class matching
		* the name {@code className}.
		* <p/>
		* This is used when we cannot use Class.forName() since the class we want was loaded from a
		* different ClassLoader.
		*/
		@NonNull
		private static Class<?> getClassInstance(@NonNull Object object, @NonNull String className) {
		Class<?> superClass = object.getClass();
		while (superClass != null) {
		if (className.equals(superClass.getName())) {
		return superClass;
		}
		superClass = superClass.getSuperclass();
		}
		throw new RuntimeException("invalid object/classname combination.");
		}

		/** Supported LayoutManagers. */
		public enum LayoutManagerType {
		LINEAR_LAYOUT_MANGER("Linear",
		"android.support.v7.widget.LinearLayoutManager",
		new Class[]{Context.class}, new Object[]{CONTEXT}),
		GRID_LAYOUT_MANAGER("Grid",
		"android.support.v7.widget.GridLayoutManager",
		new Class[]{Context.class, int.class}, new Object[]{CONTEXT, 2}),
		STAGGERED_GRID_LAYOUT_MANAGER("StaggeredGrid",
		"android.support.v7.widget.StaggeredGridLayoutManager",
		new Class[]{int.class, int.class}, new Object[]{2, LinearLayout.VERTICAL});

		private String mDisplayName;
		private String mClassName;
		private Class[] mSignature;
		private Object[] mArgs;

		private static final HashMap<String, LayoutManagerType> sDisplayNameLookup =
		new HashMap<String, LayoutManagerType>();

		static {
		for (LayoutManagerType type : LayoutManagerType.values()) {
		sDisplayNameLookup.put(type.mDisplayName, type);
		}
		}

		LayoutManagerType(String displayName, String className, Class[] signature, Object[] args) {
		mDisplayName = displayName;
		mClassName = className;
		mSignature = signature;
		mArgs = args;
		}

		String getClassName() {
		return mClassName;
		}

		Class[] getSignature() {
		return mSignature;
		}

		@NonNull
		Object[] getArgs(Context context) {
		Object[] args = new Object[mArgs.length];
		System.arraycopy(mArgs, 0, args, 0, mArgs.length);
		for (int i = 0; i < args.length; i++) {
		if (args[i] == CONTEXT) {
		args[i] = context;
		}
		}
		return args;
		}

		@NonNull
		public static LayoutManagerType getDefault() {
		return LINEAR_LAYOUT_MANGER;
		}

		@Nullable
		public static LayoutManagerType getByDisplayName(@Nullable String className) {
		return sDisplayNameLookup.get(className);
		}
		}
		}

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/impl/RenderDrawable.java

+0 −3

Original line number	Diff line number	Diff line
		@@ -16,8 +16,6 @@

		package com.android.layoutlib.bridge.impl;

		import static com.android.ide.common.rendering.api.Result.Status.ERROR_UNKNOWN;

		import com.android.ide.common.rendering.api.DrawableParams;
		import com.android.ide.common.rendering.api.HardwareConfig;
		import com.android.ide.common.rendering.api.ResourceValue;
		@@ -38,7 +36,6 @@ import java.awt.AlphaComposite;
		import java.awt.Color;
		import java.awt.Graphics2D;
		import java.awt.image.BufferedImage;
		import java.io.IOException;

		/**
		* Action to render a given Drawable provided through {@link DrawableParams#getDrawable()}.