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Posted to commits@weex.apache.org by so...@apache.org on 2017/03/15 08:05:20 UTC

[5/9] incubator-weex git commit: * [android] new dom statement pential break changes: WXRenderStatement#getComponentSize, DomModule#getComponentSize. It's low risk since it's a internal method, users should not dirct use it.

http://git-wip-us.apache.org/repos/asf/incubator-weex/blob/f3390e3c/android/sdk/src/main/java/com/taobao/weex/dom/WXDomStatement.java
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diff --git a/android/sdk/src/main/java/com/taobao/weex/dom/WXDomStatement.java b/android/sdk/src/main/java/com/taobao/weex/dom/WXDomStatement.java
deleted file mode 100755
index 36f2713..0000000
--- a/android/sdk/src/main/java/com/taobao/weex/dom/WXDomStatement.java
+++ /dev/null
@@ -1,1272 +0,0 @@
-/**
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-package com.taobao.weex.dom;
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.v4.util.ArrayMap;
-import android.text.TextUtils;
-import android.util.Pair;
-
-import com.alibaba.fastjson.JSONArray;
-import com.alibaba.fastjson.JSONObject;
-import com.taobao.weex.WXEnvironment;
-import com.taobao.weex.WXSDKInstance;
-import com.taobao.weex.WXSDKManager;
-import com.taobao.weex.adapter.IWXUserTrackAdapter;
-import com.taobao.weex.bridge.JSCallback;
-import com.taobao.weex.common.Constants;
-import com.taobao.weex.common.WXErrorCode;
-import com.taobao.weex.dom.flex.CSSLayoutContext;
-import com.taobao.weex.dom.flex.CSSNode;
-import com.taobao.weex.dom.flex.Spacing;
-import com.taobao.weex.ui.IWXRenderTask;
-import com.taobao.weex.ui.WXRenderManager;
-import com.taobao.weex.ui.animation.WXAnimationBean;
-import com.taobao.weex.ui.component.WXComponent;
-import com.taobao.weex.ui.component.WXVContainer;
-import com.taobao.weex.utils.WXLogUtils;
-import com.taobao.weex.utils.WXViewUtils;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.LinkedHashSet;
-import java.util.Map;
-import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-
-/**
- * <p>
- * This class is responsible for creating command object of DOM operation and
- * invoking command of corresponding object.
- * </p>
- * <p>
- * In the command design pattern,
- * this class acts as the <strong>invoker </strong>in the command pattern
- * despite that it is also responsible for creating <strong>Command</strong> object.
- * And,{@link IWXRenderTask} works as the <strong>Command</strong>
- * {@link WXDomManager} works as the <strong>Client</strong>
- * {@link WXRenderManager} works as the <strong>Receiver</strong>.
- * </p>
- * <p>
- * There exists one to one correspondence between WXDomStatement and WXInstance,
- * and {@link WXDomManager} is responsible for manage the relation of correspondence.
- * </p>
- */
-class WXDomStatement {
-  /** package **/ final ConcurrentHashMap<String, WXDomObject> mRegistry;
-  private WXDomObject.Consumer mAddDOMConsumer;
-  private String mInstanceId;
-  private WXRenderManager mWXRenderManager;
-  private ArrayList<IWXRenderTask> mNormalTasks;
-  private Set <Pair<String, Map<String, Object>>> animations;
-  private CSSLayoutContext mLayoutContext;
-  private volatile boolean mDirty;
-  private boolean mDestroy;
-  private Map<String, AddDomInfo> mAddDom = new HashMap<>();
-
-  /**
-   * Create an instance of {@link WXDomStatement},
-   * One {@link WXSDKInstance} corresponding to one and only one {@link WXDomStatement}.
-   * And all the instance of {@link WXDomManager} share the same {@link WXRenderManager}.
-   * @param instanceId the id of the {@link WXSDKInstance}.
-   *                   One {@link WXSDKInstance} corresponding to one {@link WXDomStatement},
-   *                   and vice versa.
-   * @param renderManager This acts as the Receiver of the command pattern
-   */
-  public WXDomStatement(String instanceId, WXRenderManager renderManager) {
-    mDestroy = false;
-    mInstanceId = instanceId;
-    mLayoutContext = new CSSLayoutContext();
-    mRegistry = new ConcurrentHashMap<>();
-    mNormalTasks = new ArrayList<>();
-    animations = new LinkedHashSet<>();
-    mWXRenderManager = renderManager;
-    mAddDOMConsumer = new AddDOMConsumer(mRegistry);
-  }
-
-  /**
-   * Destroy current instance, which occurred when {@link WXSDKInstance#destroy()} is called.
-   */
-  public void destroy() {
-    mDestroy = true;
-    mRegistry.clear();
-    mAddDOMConsumer = null;
-    mNormalTasks.clear();
-    mAddDom.clear();
-    mLayoutContext = null;
-    mWXRenderManager = null;
-    animations.clear();
-  }
-
-  /**
-   * Rebuild the component tree.
-   * The purpose of this method is moving fixed components to the root component.
-   * This method will be called when {@link #batch()} is executed.
-   * @param root root dom
-   */
-  void rebuildingFixedDomTree(WXDomObject root) {
-    if (root != null && root.getFixedStyleRefs() != null) {
-      int size = root.getFixedStyleRefs().size();
-      for (int i = 0; i < size; i++) {
-        String fixedRef = root.getFixedStyleRefs().get(i);
-        WXDomObject wxDomObject = mRegistry.get(fixedRef);
-        if (wxDomObject!=null && wxDomObject.parent != null) {
-          wxDomObject.parent.remove(wxDomObject);
-          root.add(wxDomObject, -1);
-        }
-      }
-    }
-
-  }
-
-  /**
-   * Batch the execution of command objects and execute all the command objects created other
-   * places, e.g. call {@link IWXRenderTask#execute()}.
-   * First, it will rebuild the dom tree and do pre layout staff.
-   * Then call {@link com.taobao.weex.dom.flex.CSSNode#calculateLayout(CSSLayoutContext)} to
-   * start calculate layout.
-   * Next, call {@link ApplyUpdateConsumer} to get changed dom and creating
-   * corresponding command object.
-   * Finally, walk through the queue, e.g. call {@link IWXRenderTask#execute()} for every task
-   * in the queue.
-   */
-  void batch() {
-
-    if (!mDirty || mDestroy) {
-      return;
-    }
-
-    WXDomObject rootDom = mRegistry.get(WXDomObject.ROOT);
-    layout(rootDom);
-  }
-
-  void layout(WXDomObject rootDom) {
-    if (rootDom == null) {
-      return;
-    }
-    long start0 = System.currentTimeMillis();
-
-    rebuildingFixedDomTree(rootDom);
-
-    rootDom.traverseTree( new WXDomObject.Consumer() {
-      @Override
-      public void accept(WXDomObject dom) {
-        if (!dom.hasUpdate() || mDestroy) {
-          return;
-        }
-        dom.layoutBefore();
-      }
-    });
-    long start = System.currentTimeMillis();
-
-
-    rootDom.calculateLayout(mLayoutContext);
-
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    if (instance != null) {
-      instance.cssLayoutTime(System.currentTimeMillis() - start);
-    }
-
-    rootDom.traverseTree( new WXDomObject.Consumer() {
-      @Override
-      public void accept(WXDomObject dom) {
-        if (!dom.hasUpdate() || mDestroy) {
-          return;
-        }
-        dom.layoutAfter();
-      }
-    });
-
-    start = System.currentTimeMillis();
-    rootDom.traverseTree(new ApplyUpdateConsumer());
-
-    if (instance != null) {
-      instance.applyUpdateTime(System.currentTimeMillis() - start);
-    }
-
-    start = System.currentTimeMillis();
-    updateDomObj();
-    if (instance != null) {
-      instance.updateDomObjTime(System.currentTimeMillis() - start);
-    }
-    parseAnimation();
-
-    int count = mNormalTasks.size();
-    for (int i = 0; i < count && !mDestroy; ++i) {
-      mWXRenderManager.runOnThread(mInstanceId, mNormalTasks.get(i));
-    }
-    mNormalTasks.clear();
-    mAddDom.clear();
-    animations.clear();
-    mDirty = false;
-    if (instance != null) {
-      instance.batchTime(System.currentTimeMillis() - start0);
-    }
-  }
-
-  class ApplyUpdateConsumer implements WXDomObject.Consumer{
-
-    @Override
-    public void accept(WXDomObject dom) {
-      if (dom.hasUpdate()) {
-        dom.markUpdateSeen();
-        if (!dom.isYoung()) {
-          final WXDomObject copy = dom.clone();
-          if (copy == null) {
-            return;
-          }
-          mNormalTasks.add(new IWXRenderTask() {
-
-            @Override
-            public void execute() {
-              mWXRenderManager.setLayout(mInstanceId, copy.getRef(), copy);
-              if(copy.getExtra() != null) {
-                mWXRenderManager.setExtra(mInstanceId, copy.getRef(), copy.getExtra());
-              }
-            }
-
-            @Override
-            public String toString() {
-              return "setLayout & setExtra";
-            }
-          });
-        }
-      }
-    }
-  }
-
-  private void parseAnimation() {
-    for(final Pair<String, Map<String, Object>> pair:animations) {
-      if (!TextUtils.isEmpty(pair.first)) {
-        final WXAnimationBean animationBean = createAnimationBean(pair.first, pair.second);
-        if (animationBean != null) {
-          mNormalTasks.add(new IWXRenderTask() {
-            @Override
-            public void execute() {
-              mWXRenderManager.startAnimation(mInstanceId, pair.first, animationBean, null);
-            }
-
-            @Override
-            public String toString() {
-              return "startAnimationByStyle";
-            }
-          });
-        }
-      }
-    }
-  }
-
-  /**
-   * Create command object for creating body according to the JSONObject. And put the command
-   * object in the queue.
-   * @param dom the jsonObject according to which to create command object.
-   */
-  void createBody(JSONObject dom) {
-    addDomInternal(dom,true,null,-1);
-  }
-
-  private class CreateBodyTask implements IWXRenderTask {
-    final WXComponent mComponent;
-
-    CreateBodyTask(WXComponent component) {
-      mComponent = component;
-    }
-
-    @Override
-    public void execute() {
-      WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-      if (instance == null || instance.getContext() == null) {
-        WXLogUtils.e("instance is null or instance is destroy!");
-        return;
-      }
-      try {
-        mWXRenderManager.createBody(mInstanceId, mComponent);
-        instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-      } catch (Exception e) {
-        WXLogUtils.e("create body failed.", e);
-      }
-    }
-
-    @Override
-    public String toString() {
-      return "createBody";
-    }
-  }
-
-  /**
-   * Update all components' dom info stored in {@link #mAddDom}
-   */
-  private void updateDomObj() {
-    long start = System.currentTimeMillis();
-    Iterator<Map.Entry<String, AddDomInfo>> iterator = mAddDom.entrySet().iterator();
-    Map.Entry<String, AddDomInfo> entry;
-    AddDomInfo value;
-    while (iterator.hasNext()) {
-      entry = iterator.next();
-      value = entry.getValue();
-      updateDomObj(value.component);
-    }
-    if (WXEnvironment.isApkDebugable()) {
-      WXLogUtils.d("updateDomObj", "time:" + (System.currentTimeMillis() - start));
-    }
-  }
-
-  /**
-   * Update the specified component's dom and mark it as old.
-   * @param component the component to be updated
-   */
-  private void updateDomObj(WXComponent component) {
-    if (component == null) {
-      return;
-    }
-    WXDomObject domObject = mRegistry.get(component.getRef());
-    if (domObject == null) {
-      return;
-    }
-    domObject.old();
-    component.updateDom(domObject);
-    if (component instanceof WXVContainer) {
-      WXVContainer container = (WXVContainer) component;
-      int count = container.childCount();
-      for (int i = 0; i < count; ++i) {
-        updateDomObj(container.getChild(i));
-      }
-    }
-  }
-
-  void invokeMethod(String ref, String method, JSONArray args){
-    if(mDestroy){
-      return;
-    }
-    WXComponent comp = mWXRenderManager.getWXComponent(mInstanceId, ref);
-    if(comp == null){
-      WXLogUtils.e("DomStatement","target component not found.");
-      return;
-    }
-    comp.invoke(method,args);
-  }
-
-  /**
-   * Add DOM node.
-   * @param dom
-   * @param isRoot
-   * @param parentRef
-   * @param index
-   */
-  private void addDomInternal(JSONObject dom,boolean isRoot, String parentRef, final int index){
-    if (mDestroy) {
-      return;
-    }
-
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    if (instance == null) {
-      return;
-    }
-    WXErrorCode errCode = isRoot ? WXErrorCode.WX_ERR_DOM_CREATEBODY : WXErrorCode.WX_ERR_DOM_ADDELEMENT;
-    if (dom == null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, errCode);
-    }
-
-    //only non-root has parent.
-    WXDomObject parent;
-    WXDomObject domObject = WXDomObject.parse(dom,instance);
-
-    if (domObject == null || mRegistry.containsKey(domObject.getRef())) {
-      if (WXEnvironment.isApkDebugable()) {
-        WXLogUtils.e("[WXDomStatement] " + (isRoot ? "createBody" : "addDom") + " error,DOM object is null or already registered!!");
-      }
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, errCode);
-      return;
-    }
-    if (isRoot) {
-      WXDomObject.prepareRoot(domObject,
-                              WXViewUtils.getWebPxByWidth(WXViewUtils.getWeexHeight(mInstanceId),WXSDKManager.getInstanceViewPortWidth(mInstanceId)),
-                              WXViewUtils.getWebPxByWidth(WXViewUtils.getWeexWidth(mInstanceId),WXSDKManager.getInstanceViewPortWidth(mInstanceId)));
-    } else if ((parent = mRegistry.get(parentRef)) == null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, errCode);
-      return;
-    } else {
-      //non-root and parent exist
-      parent.add(domObject, index);
-    }
-
-    domObject.traverseTree(
-        mAddDOMConsumer,
-        ApplyStyleConsumer.getInstance()
-                          );
-
-    //Create component in dom thread
-    WXComponent component = isRoot ?
-                            mWXRenderManager.createBodyOnDomThread(mInstanceId, domObject) :
-                            mWXRenderManager.createComponentOnDomThread(mInstanceId, domObject, parentRef, index);
-    if (component == null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, errCode);
-      //stop redner, some fatal happened.
-      return;
-    }
-    AddDomInfo addDomInfo = new AddDomInfo();
-    addDomInfo.component = component;
-    mAddDom.put(domObject.getRef(), addDomInfo);
-
-    IWXRenderTask task = isRoot ? new CreateBodyTask(component) : new AddDOMTask(component, parentRef, index);
-    mNormalTasks.add(task);
-    addAnimationForDomTree(domObject);
-    mDirty = true;
-
-    instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-  }
-
-  /**
-   * Create a command object for adding a dom node to its parent in a specific location.
-   * If dom's parent doesn't exist or the dom has been added in current {@link WXSDKInstance},
-   * this method will return.
-   * If the above request is met, then put the command object in the queue.
-   * @param dom the dom object in the form of JSONObject
-   * @param parentRef parent to which the dom is added.
-   * @param index the location of which the dom is added.
-   */
-  void addDom(JSONObject dom, final String parentRef, final int index) {
-    addDomInternal(dom,false,parentRef,index);
-  }
-
-  private class AddDOMTask implements IWXRenderTask {
-    final WXComponent mComponent;
-    final String mParentRef;
-    final int mIndex;
-    AddDOMTask(WXComponent comp,String parentRef,int index){
-      mComponent = comp;
-      mParentRef = parentRef;
-      mIndex = index;
-    }
-
-    @Override
-    public void execute() {
-      WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-      if(instance == null || instance.getContext()== null) {
-        WXLogUtils.e("instance is null or instance is destroy!");
-        return;
-      }
-      try {
-        mWXRenderManager.addComponent(mInstanceId, mComponent, mParentRef, mIndex);
-      }catch (Exception e){
-        WXLogUtils.e("add component failed.", e);
-      }
-    }
-
-    @Override
-    public String toString() {
-      return "AddDom";
-    }
-  }
-
-  /**
-   * Create a command object for moving the specific {@link WXDomObject} to a new parent.
-   * If any of the following situation is met,
-   * <ul>
-   * <li> dom to be moved is null </li>
-   * <li> dom's parent is null </li>
-   * <li> new parent is null </li>
-   * <li> parent is under {@link CSSNode#hasNewLayout()} </li>
-   * </ul>
-   * this method will return. Otherwise, put the command object in the queue.
-   * @param ref Reference of the dom to be moved.
-   * @param parentRef Reference of the new parent DOM node
-   * @param index the index of the dom to be inserted in the new parent.
-   */
-  void moveDom(final String ref, final String parentRef, int index) {
-    if (mDestroy) {
-      return;
-    }
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    WXDomObject domObject = mRegistry.get(ref);
-    WXDomObject parentObject = mRegistry.get(parentRef);
-    if (domObject == null || domObject.parent == null
-        || parentObject == null || parentObject.hasNewLayout()) {
-      if (instance != null) {
-        instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_ERR_DOM_MOVEELEMENT);
-      }
-      return;
-    }
-    if (domObject.parent.equals(parentObject)) {
-      if(parentObject.index(domObject) == index) {
-        return;
-      } else if(domObject.parent.index(domObject)<index){
-        index = index -1;
-      }
-    }
-
-    final int newIndex = index;
-    domObject.parent.remove(domObject);
-    parentObject.add(domObject, newIndex);
-
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        mWXRenderManager.moveComponent(mInstanceId, ref, parentRef, newIndex);
-      }
-
-      @Override
-      public String toString() {
-        return "moveDom";
-      }
-    });
-
-    mDirty = true;
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Create a command object for removing the specified {@link WXDomObject}.
-   * If the domObject is null or its parent is null, this method returns directly.
-   * Otherwise, put the command object in the queue.
-   * @param ref Reference of the dom.
-   */
-  void removeDom(final String ref) {
-    if (mDestroy) {
-      return;
-    }
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    WXDomObject domObject = mRegistry.get(ref);
-    if (domObject == null) {
-      if (instance != null) {
-        instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_ERR_DOM_REMOVEELEMENT);
-      }
-      return;
-    }
-    WXDomObject parent = domObject.parent;
-    if (parent == null) {
-      if (instance != null) {
-        instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_ERR_DOM_REMOVEELEMENT);
-      }
-      return;
-    }
-    domObject.traverseTree(new WXDomObject.Consumer() {
-      @Override
-      public void accept(WXDomObject dom) {
-        mRegistry.remove(dom.getRef());
-      }
-    });
-    parent.remove(domObject);
-    mRegistry.remove(ref);
-
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        mWXRenderManager.removeComponent(mInstanceId, ref);
-      }
-
-      @Override
-      public String toString() {
-        return "removeDom";
-      }
-    });
-
-    mDirty = true;
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Update the attributes according to the given attribute. Then creating a
-   * command object for updating corresponding view and put the command object in the queue.
-   * @param ref Reference of the dom.
-   * @param attrs the new style. This style is only a part of the full attribute set, and will be
-   *              merged into attributes
-   * @see #updateStyle(String, JSONObject)
-   */
-  void updateAttrs(String ref, final JSONObject attrs) {
-    if (mDestroy) {
-      return;
-    }
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    final WXDomObject domObject = mRegistry.get(ref);
-    if (domObject == null) {
-      if (instance != null) {
-        instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_ERR_DOM_UPDATEATTRS);
-      }
-      return;
-    }
-
-    domObject.updateAttr(attrs);
-
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        mWXRenderManager.updateAttrs(mInstanceId, domObject.getRef(), attrs);
-      }
-
-      @Override
-      public String toString() {
-        return "updateAttr";
-      }
-    });
-    mDirty = true;
-
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Update styles according to the given style. Then creating a
-   * command object for updating corresponding view and put the command object in the queue.
-   * @param ref Reference of the dom.
-   * @param style the new style. This style is only a part of the full style, and will be merged
-   *              into styles
-   * @param byPesudo updateStyle by pesduo class
-   * @see #updateAttrs(String, JSONObject)
-   */
-  void updateStyle(String ref, JSONObject style, boolean byPesudo) {
-    if (mDestroy || style == null) {
-      return;
-    }
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    WXDomObject domObject = mRegistry.get(ref);
-    if (domObject == null) {
-      if (instance != null) {
-        instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_ERR_DOM_UPDATESTYLE);
-      }
-      return;
-    }
-
-    Map<String, Object> animationMap= new ArrayMap<>(2);
-    animationMap.put(WXDomObject.TRANSFORM, style.remove(WXDomObject.TRANSFORM));
-    animationMap.put(WXDomObject.TRANSFORM_ORIGIN, style.remove(WXDomObject.TRANSFORM_ORIGIN));
-    animations.add(new Pair<>(ref, animationMap));
-
-    if(!style.isEmpty()){
-      domObject.updateStyle(style, byPesudo);
-      domObject.traverseTree(ApplyStyleConsumer.getInstance());
-      updateStyle(domObject, style);
-    }
-    mDirty = true;
-
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Create the command object for updating style and put it the queue. If the given style
-   * contains border-width and padding that will affect layout, then a command object for reset
-   * padding will also be created.
-   * @param domObject the given dom object
-   * @param update the given style.
-   */
-  private void updateStyle(final WXDomObject domObject, final Map<String, Object> update) {
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        mWXRenderManager.updateStyle(mInstanceId, domObject.getRef(), update);
-      }
-
-      @Override
-      public String toString() {
-        return "updateStyle";
-      }
-    });
-    if (update.containsKey(Constants.Name.PADDING) ||
-        update.containsKey(Constants.Name.PADDING_TOP) ||
-        update.containsKey(Constants.Name.PADDING_LEFT) ||
-        update.containsKey(Constants.Name.PADDING_RIGHT) ||
-        update.containsKey(Constants.Name.PADDING_BOTTOM) ||
-        update.containsKey(Constants.Name.BORDER_WIDTH)) {
-      mNormalTasks.add(new IWXRenderTask() {
-
-        @Override
-        public void execute() {
-          Spacing padding = domObject.getPadding();
-          Spacing border = domObject.getBorder();
-          mWXRenderManager.setPadding(mInstanceId, domObject.getRef(), padding, border);
-        }
-
-        @Override
-        public String toString() {
-          return "setPadding";
-        }
-      });
-    }
-  }
-
-  /**
-   * Create a command object for adding a default event listener to the corresponding {@link
-   * WXDomObject} and put the command object in the queue.
-   * When the event is triggered, the eventListener will call {@link WXSDKManager#fireEvent(String, String, String)}
-   * , and the JS will handle all the operations from there.
-   *
-   * @param ref Reference of the dom.
-   * @param type the type of the event, this may be a plain event defined in
-   * {@link com.taobao.weex.common.Constants.Event} or a gesture defined in {@link com.taobao
-   * .weex.ui.view.gesture.WXGestureType}
-   */
-  void addEvent(final String ref, final String type) {
-    if (mDestroy) {
-      return;
-    }
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    final WXDomObject domObject = mRegistry.get(ref);
-    if (domObject == null) {
-      if (instance != null) {
-        instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_ERR_DOM_ADDEVENT);
-      }
-      return;
-    }
-    domObject.addEvent(type);
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        WXComponent comp = mWXRenderManager.getWXComponent(mInstanceId,ref);
-        if(comp != null){
-          //sync dom change to component
-          comp.updateDom(domObject);
-          mWXRenderManager.addEvent(mInstanceId, ref, type);
-        }
-      }
-
-      @Override
-      public String toString() {
-        return "Add event";
-      }
-    });
-
-    mDirty = true;
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Create a command object for removing the event listener of the corresponding {@link
-   * WXDomObject} and put the command event in the queue.
-   * @param ref Reference of the dom.
-   * @param type the type of the event, this may be a plain event defined in
-   * {@link com.taobao.weex.common.Constants.Event} or a gesture defined in {@link com.taobao
-   * .weex.ui.view.gesture.WXGestureType}
-   */
-  void removeEvent(final String ref, final String type) {
-    if (mDestroy) {
-      return;
-    }
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    final WXDomObject domObject = mRegistry.get(ref);
-    if (domObject == null) {
-      if (instance != null) {
-        instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_ERR_DOM_REMOVEEVENT);
-      }
-      return;
-    }
-    domObject.removeEvent(type);
-
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        WXComponent comp = mWXRenderManager.getWXComponent(mInstanceId,ref);
-        if(comp != null){
-          //sync dom change to component
-          comp.updateDom(domObject);
-          mWXRenderManager.removeEvent(mInstanceId, ref, type);
-        }
-
-      }
-
-      @Override
-      public String toString() {
-        return "removeEvent";
-      }
-    });
-
-    mDirty = true;
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Create a command object for scroll the given view to the specified position.
-   * @param ref Reference of the dom.
-   * @param options the specified position
-   */
-  void scrollToDom(final String ref, final JSONObject options) {
-    if (mDestroy) {
-      return;
-    }
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        mWXRenderManager.scrollToComponent(mInstanceId, ref, options);
-      }
-
-      @Override
-      public String toString() {
-        return "scrollToPosition";
-      }
-    });
-
-    mDirty = true;
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Create a command object for notifying {@link WXRenderManager} that the process of creating
-   * given view is finished, and put the command object in the queue.
-   */
-  void createFinish() {
-    if (mDestroy) {
-      return;
-    }
-
-    final WXDomObject root = mRegistry.get(WXDomObject.ROOT);
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        mWXRenderManager.createFinish(mInstanceId,
-                                      (int) root.getLayoutWidth(),
-                                      (int) root.getLayoutHeight());
-      }
-
-      @Override
-      public String toString() {
-        return "createFinish";
-      }
-    });
-
-    mDirty = true;
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Create a command object for notifying {@link WXRenderManager} that the process of refreshing
-   * given view is finished, and put the command object in the queue.
-   */
-  void refreshFinish() {
-    if (mDestroy) {
-      return;
-    }
-    final WXDomObject root = mRegistry.get(WXDomObject.ROOT);
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        int realWidth = (int) root.getLayoutWidth();
-        int realHeight = (int) root.getLayoutHeight();
-        mWXRenderManager.refreshFinish(mInstanceId, realWidth, realHeight);
-      }
-
-      @Override
-      public String toString() {
-        return "refreshFinish";
-      }
-    });
-
-    mDirty = true;
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  /**
-   * Create a command object for notifying {@link WXRenderManager} that the process of update
-   * given view is finished, and put the command object in the queue.
-   */
-  void updateFinish() {
-    if (mDestroy) {
-      return;
-    }
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        mWXRenderManager.updateFinish(mInstanceId);
-      }
-
-      @Override
-      public String toString() {
-        return "updateFinish";
-      }
-    });
-
-    WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId);
-    if (instance != null) {
-      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
-    }
-  }
-
-  void startAnimation(@NonNull final String ref, @NonNull String animation,
-                      @Nullable final String callBack){
-    if (mDestroy) {
-      return;
-    }
-    WXDomObject domObject = mRegistry.get(ref);
-    if (domObject == null) {
-      return;
-    }
-    final WXAnimationBean animationBean=createAnimationBean(ref, animation);
-    if(animationBean!=null) {
-      mNormalTasks.add(new IWXRenderTask() {
-        @Override
-        public void execute() {
-          mWXRenderManager.startAnimation(mInstanceId, ref, animationBean, callBack);
-        }
-
-        @Override
-        public String toString() {
-          return "startAnimationByCall";
-        }
-      });
-      mDirty=true;
-    }
-  }
-
-  private void addAnimationForDomTree(WXDomObject domObject){
-    animations.add(new Pair<String, Map<String, Object>>(domObject.getRef(),domObject.getStyles()));
-    for(int i=0;i<domObject.childCount();i++){
-      addAnimationForDomTree(domObject.getChild(i));
-    }
-  }
-
-  private WXAnimationBean createAnimationBean(String ref, String animation){
-    try {
-      WXAnimationBean animationBean =
-          JSONObject.parseObject(animation, WXAnimationBean.class);
-      if (animationBean != null && animationBean.styles != null) {
-        WXDomObject domObject=mRegistry.get(ref);
-        int width=(int)domObject.getLayoutWidth();
-        int height=(int)domObject.getLayoutHeight();
-        animationBean.styles.init(animationBean.styles.transformOrigin,
-                                  animationBean.styles.transform,width,height,WXSDKManager.getInstance().getSDKInstance(mInstanceId).getInstanceViewPortWidth());
-      }
-      return animationBean;
-    } catch (RuntimeException e) {
-      WXLogUtils.e("", e);
-      return null;
-    }
-  }
-
-  private WXAnimationBean createAnimationBean(String ref,Map<String, Object> style){
-    if (style != null) {
-      try {
-        Object transform = style.get(WXDomObject.TRANSFORM);
-        if (transform instanceof String && !TextUtils.isEmpty((String) transform)) {
-          String transformOrigin = (String) style.get(WXDomObject.TRANSFORM_ORIGIN);
-          WXAnimationBean animationBean = new WXAnimationBean();
-          WXDomObject domObject = mRegistry.get(ref);
-          int width = (int) domObject.getLayoutWidth();
-          int height = (int) domObject.getLayoutHeight();
-          animationBean.styles = new WXAnimationBean.Style();
-          animationBean.styles.init(transformOrigin, (String) transform, width, height,WXSDKManager.getInstance().getSDKInstance(mInstanceId).getInstanceViewPortWidth());
-          return animationBean;
-        }
-      }catch (RuntimeException e){
-        WXLogUtils.e("", e);
-        return null;
-      }
-    }
-    return null;
-  }
-
-
-  private static class AddDOMConsumer implements WXDomObject.Consumer {
-    final ConcurrentHashMap<String, WXDomObject> mRegistry;
-    AddDOMConsumer(ConcurrentHashMap<String, WXDomObject> r){
-      mRegistry = r;
-    }
-
-    @Override
-    public void accept(WXDomObject dom) {
-      //register dom
-      dom.young();
-      mRegistry.put(dom.getRef(), dom);
-
-      //find fixed node
-      WXDomObject rootDom = mRegistry.get(WXDomObject.ROOT);
-      if (rootDom != null && dom.isFixed()) {
-        rootDom.add2FixedDomList(dom.getRef());
-      }
-    }
-  }
-
-  static class ApplyStyleConsumer implements WXDomObject.Consumer {
-    static ApplyStyleConsumer sInstance;
-
-    public static ApplyStyleConsumer getInstance(){
-      if(sInstance == null){
-        sInstance = new ApplyStyleConsumer();
-      }
-      return sInstance;
-    }
-
-    private ApplyStyleConsumer(){};
-
-    @Override
-    public void accept(WXDomObject dom) {
-      WXStyle style = dom.getStyles();
-
-      /** merge default styles **/
-      Map<String, String> defaults = dom.getDefaultStyle();
-      if (defaults != null) {
-        for (Map.Entry<String, String> entry : defaults.entrySet()) {
-          if (!style.containsKey(entry.getKey())) {
-            style.put(entry.getKey(), entry.getValue());
-          }
-        }
-      }
-
-      if (dom.getStyles().size() > 0) {
-        dom.applyStyleToNode();
-      }
-    }
-  }
-
-  public void getComponentSize(final String ref, final JSCallback callback) {
-    if (mDestroy) {
-      Map<String, Object> options = new HashMap<>();
-      options.put("result", false);
-      options.put("errMsg", "Component does not exist");
-      callback.invoke(options);
-      return;
-    }
-
-    mNormalTasks.add(new IWXRenderTask() {
-
-      @Override
-      public void execute() {
-        mWXRenderManager.getComponentSize(mInstanceId, ref, callback);
-      }
-
-      @Override
-      public String toString() {
-        return "getComponentSize";
-      }
-    });
-    mDirty=true;
-
-  }
-
-  static class AddDomInfo {
-
-    public WXComponent component;
-  }
-}

http://git-wip-us.apache.org/repos/asf/incubator-weex/blob/f3390e3c/android/sdk/src/main/java/com/taobao/weex/dom/action/AbstractAddElementAction.java
----------------------------------------------------------------------
diff --git a/android/sdk/src/main/java/com/taobao/weex/dom/action/AbstractAddElementAction.java b/android/sdk/src/main/java/com/taobao/weex/dom/action/AbstractAddElementAction.java
new file mode 100644
index 0000000..8b3cf3d
--- /dev/null
+++ b/android/sdk/src/main/java/com/taobao/weex/dom/action/AbstractAddElementAction.java
@@ -0,0 +1,313 @@
+/**
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2016 Alibaba Group
+ *
+ *    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.taobao.weex.dom.action;
+
+
+import com.alibaba.fastjson.JSONObject;
+import com.taobao.weex.WXEnvironment;
+import com.taobao.weex.WXSDKInstance;
+import com.taobao.weex.adapter.IWXUserTrackAdapter;
+import com.taobao.weex.common.WXErrorCode;
+import com.taobao.weex.dom.DOMAction;
+import com.taobao.weex.dom.DOMActionContext;
+import com.taobao.weex.dom.RenderAction;
+import com.taobao.weex.dom.WXDomObject;
+import com.taobao.weex.ui.component.WXComponent;
+import com.taobao.weex.ui.component.WXComponentFactory;
+import com.taobao.weex.ui.component.WXVContainer;
+import com.taobao.weex.utils.WXLogUtils;
+
+/**
+ * Created by sospartan on 22/02/2017.
+ */
+
+abstract class AbstractAddElementAction implements DOMAction, RenderAction {
+
+
+  protected WXComponent generateComponentTree(DOMActionContext context, WXDomObject dom, WXVContainer parent) {
+    if (dom == null) {
+      return null;
+    }
+    WXComponent component = WXComponentFactory.newInstance(context.getInstance(), dom, parent);
+
+    context.registerComponent(dom.getRef(), component);
+    if (component instanceof WXVContainer) {
+      WXVContainer parentC = (WXVContainer) component;
+      int count = dom.childCount();
+      WXDomObject child = null;
+      for (int i = 0; i < count; ++i) {
+        child = dom.getChild(i);
+        if (child != null) {
+          parentC.addChild(generateComponentTree(context, child, parentC));
+        }
+      }
+    }
+
+    return component;
+  }
+
+  /**
+   * Add DOM node.
+   */
+  protected void addDomInternal(DOMActionContext context, JSONObject dom) {
+    if (context.isDestory()) {
+      return;
+    }
+
+    WXSDKInstance instance = context.getInstance();
+    if (instance == null) {
+      return;
+    }
+    WXErrorCode errCode = getErrorCode();
+    if (dom == null) {
+      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, errCode);
+    }
+
+    //only non-root has parent.
+    WXDomObject domObject = WXDomObject.parse(dom, instance);
+
+    if (domObject == null || context.getDomByRef(domObject.getRef()) != null) {
+      if (WXEnvironment.isApkDebugable()) {
+        WXLogUtils.e("[DOMActionContextImpl] " + getStatementName() + " error,DOM object is null or already registered!!");
+      }
+      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, errCode);
+      return;
+    }
+    appendDomToTree(context, domObject);
+
+    domObject.traverseTree(
+        context.getAddDOMConsumer(),
+        context.getApplyStyleConsumer()
+    );
+
+    //Create component in dom thread
+    WXComponent component = createComponent(context, domObject);
+    if (component == null) {
+      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, errCode);
+      //stop redner, some fatal happened.
+      return;
+    }
+    context.addDomInfo(domObject.getRef(), component);
+    context.postRenderTask(this);
+    addAnimationForDomTree(context, domObject);
+
+    instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
+  }
+
+  public void addAnimationForDomTree(DOMActionContext context, WXDomObject domObject) {
+    context.addAnimationForElement(domObject.getRef(), domObject.getStyles());
+    for (int i = 0; i < domObject.childCount(); i++) {
+      addAnimationForDomTree(context, domObject.getChild(i));
+    }
+  }
+
+  protected abstract WXComponent createComponent(DOMActionContext context, WXDomObject domObject);
+
+  protected abstract void appendDomToTree(DOMActionContext context, WXDomObject domObject);
+
+  protected abstract String getStatementName();
+
+  protected abstract WXErrorCode getErrorCode();
+}

http://git-wip-us.apache.org/repos/asf/incubator-weex/blob/f3390e3c/android/sdk/src/main/java/com/taobao/weex/dom/action/AbstractLayoutFinishAction.java
----------------------------------------------------------------------
diff --git a/android/sdk/src/main/java/com/taobao/weex/dom/action/AbstractLayoutFinishAction.java b/android/sdk/src/main/java/com/taobao/weex/dom/action/AbstractLayoutFinishAction.java
new file mode 100644
index 0000000..510d550
--- /dev/null
+++ b/android/sdk/src/main/java/com/taobao/weex/dom/action/AbstractLayoutFinishAction.java
@@ -0,0 +1,240 @@
+/**
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2016 Alibaba Group
+ *
+ *    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.taobao.weex.dom.action;
+
+import com.taobao.weex.WXSDKInstance;
+import com.taobao.weex.adapter.IWXUserTrackAdapter;
+import com.taobao.weex.common.WXErrorCode;
+import com.taobao.weex.common.WXRenderStrategy;
+import com.taobao.weex.dom.DOMAction;
+import com.taobao.weex.dom.DOMActionContext;
+import com.taobao.weex.dom.RenderAction;
+import com.taobao.weex.dom.WXDomObject;
+
+/**
+ * Created by sospartan on 02/03/2017.
+ */
+abstract class AbstractLayoutFinishAction implements DOMAction, RenderAction {
+
+  protected int mLayoutWidth;
+  protected int mLayoutHeight;
+
+  @Override
+  public void executeDom(DOMActionContext context) {
+    if (context.isDestory()) {
+      return;
+    }
+
+    WXDomObject root = context.getDomByRef(WXDomObject.ROOT);
+    mLayoutHeight = (int)root.getLayoutHeight();
+    mLayoutWidth = (int)root.getLayoutWidth();
+    context.postRenderTask(this);
+    WXSDKInstance instance = context.getInstance();
+    if (instance != null) {
+      instance.commitUTStab(IWXUserTrackAdapter.DOM_MODULE, WXErrorCode.WX_SUCCESS);
+    }
+  }
+
+}