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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; 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.common.WXDomPropConstant; 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.component.WXComponent; import com.taobao.weex.ui.component.WXVContainer; import com.taobao.weex.utils.WXConst; import com.taobao.weex.utils.WXLogUtils; import com.taobao.weex.utils.WXViewUtils; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; 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 { private final ConcurrentHashMap<String, WXDomObject> mRegistry; private String mInstanceId; private WXRenderManager mWXRenderManager; private ArrayList<IWXRenderTask> mNormalTasks; private Set<String> mUpdate; 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<>(); mUpdate = new HashSet<>(); mWXRenderManager = renderManager; } /** * Put the map info in the JSONObject to the container. * This method check for null value in the JSONObject * and won't put the null value in the container. * As {@link ConcurrentHashMap#putAll(Map)} will throws an exception if the key or value to * be put is null, it is necessary to invoke this method as replacement of * {@link Map#putAll(Map)} * @param container container to contain the JSONObject. * @param rawValue jsonObject, contains map info. */ private static void putAll(Map<String, Object> container, JSONObject rawValue) { String key; Object value; for (Map.Entry<String, Object> entry : rawValue.entrySet()) { key = entry.getKey(); value = entry.getValue(); if (key != null && value != null) { container.put(key, value); } } } /** * Destroy current instance, which occurred when {@link WXSDKInstance#destroy()} is called. */ public void destroy() { mDestroy = true; mRegistry.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 rebuildingDomTree(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 #applyUpdate(WXDomObject)} 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() { long start0 = System.currentTimeMillis(); if (!mDirty || mDestroy) { return; } WXDomObject rootDom = mRegistry.get(WXDomObject.ROOT); if (rootDom == null) { return; } rebuildingDomTree(rootDom); layoutBefore(rootDom); long start = System.currentTimeMillis(); rootDom.calculateLayout(mLayoutContext); if(WXSDKManager.getInstance().getSDKInstance(mInstanceId)!=null) { WXSDKManager.getInstance().getSDKInstance(mInstanceId).cssLayoutTime(System.currentTimeMillis() - start); } // if (WXEnvironment.isApkDebugable()) { // WXLogUtils.d("csslayout", "------------start------------"); // WXLogUtils.d("csslayout", rootDom.toString()); // WXLogUtils.d("csslayout", "------------end------------"); // } layoutAfter(rootDom); start = System.currentTimeMillis(); applyUpdate(rootDom); if(WXSDKManager.getInstance().getSDKInstance(mInstanceId)!=null) { WXSDKManager.getInstance().getSDKInstance(mInstanceId).applyUpdateTime(System.currentTimeMillis() - start); } start = System.currentTimeMillis(); updateDomObj(); if(WXSDKManager.getInstance().getSDKInstance(mInstanceId)!=null) { WXSDKManager.getInstance().getSDKInstance(mInstanceId).updateDomObjTime(System.currentTimeMillis() - start); } int count = mNormalTasks.size(); for (int i = 0; i < count && !mDestroy; ++i) { mWXRenderManager.runOnThread(mInstanceId, mNormalTasks.get(i)); } mNormalTasks.clear(); mAddDom.clear(); mUpdate.clear(); mDirty = false; if(WXSDKManager.getInstance().getSDKInstance(mInstanceId)!=null) { WXSDKManager.getInstance().getSDKInstance(mInstanceId).batchTime(System.currentTimeMillis() - start0); } } /** * Calling given dom and its children's {@link WXDomObject#layoutBefore()} * @param dom the root domObject for recursive call */ private void layoutBefore(WXDomObject dom) { if (dom == null || !dom.hasUpdate() || mDestroy) { return; } dom.layoutBefore(); int count = dom.childCount(); for (int i = 0; i < count; ++i) { layoutBefore(dom.getChild(i)); } } private void layoutAfter(WXDomObject dom){ if (dom == null || !dom.hasUpdate() || mDestroy) { return; } dom.layoutAfter(); int count = dom.childCount(); for (int i = 0; i < count; ++i) { layoutAfter(dom.getChild(i)); } } /** * Walk through the dom tree and create command object of re-calculating * {@link android.view.ViewGroup.LayoutParams} for dom that is old. * @param dom the root dom of the walk through. */ private void applyUpdate(WXDomObject dom) { if (dom == null) { return; } if (dom.hasUpdate()) { dom.markUpdateSeen(); mUpdate.add(dom.ref); if (!dom.isYoung()) { final WXDomObject copy = dom.clone(); if (copy == null) { return; } mNormalTasks.add(new IWXRenderTask() { @Override public void execute() { mWXRenderManager.setLayout(mInstanceId, copy.ref, copy); } }); if (dom.getExtra() != null) { mNormalTasks.add(new IWXRenderTask() { @Override public void execute() { mWXRenderManager.setExtra(mInstanceId, copy.ref, copy.getExtra()); } }); } } } int count = dom.childCount(); for (int i = 0; i < count; ++i) { applyUpdate(dom.getChild(i)); } } /** * Create command object for creating body according to the JSONObject. And put the command * object in the queue. * @param element the jsonObject according to which to create command object. */ void createBody(JSONObject element) { if (mDestroy) { return; } WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId); if (element == null) { if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_CREATEBODY); } return; } WXDomObject domObject = parseInner(element); if(domObject==null){ return; } Map<String, Object> style = new HashMap<>(5); if (domObject.style == null || !domObject.style.containsKey(WXDomPropConstant.WX_FLEXDIRECTION)) { style.put(WXDomPropConstant.WX_FLEXDIRECTION, "column"); } if (domObject.style == null || !domObject.style.containsKey(WXDomPropConstant.WX_BACKGROUNDCOLOR)) { style.put(WXDomPropConstant.WX_BACKGROUNDCOLOR, "#ffffff"); } //If there is height or width in JS, then that value will override value here. if (domObject.style == null || !domObject.style.containsKey(WXDomPropConstant.WX_WIDTH)) { style.put(WXDomPropConstant.WX_WIDTH, WXViewUtils.getWebPxByWidth(WXViewUtils.getWeexWidth(mInstanceId))); } if (domObject.style == null || !domObject.style.containsKey(WXDomPropConstant.WX_HEIGHT)) { style.put(WXDomPropConstant.WX_HEIGHT, WXViewUtils.getWebPxByWidth(WXViewUtils.getWeexHeight(mInstanceId))); } domObject.ref = WXDomObject.ROOT; domObject.updateStyle(style); transformStyle(domObject, true); try { final WXComponent component = mWXRenderManager.createBodyOnDomThread(mInstanceId, domObject); AddDomInfo addDomInfo = new AddDomInfo(); addDomInfo.component = component; mAddDom.put(domObject.ref, addDomInfo); mNormalTasks.add(new IWXRenderTask() { @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, component); } catch (Exception e) { WXLogUtils.e("create body failed." + e.getMessage()); } } }); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_SUCCESS); } }catch (Exception e){ WXLogUtils.e("create body in dom thread failed." + e.getMessage()); } } /** * 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.clone()); if (component instanceof WXVContainer) { WXVContainer container = (WXVContainer) component; int count = container.childCount(); for (int i = 0; i < count; ++i) { updateDomObj(container.getChild(i)); } } } /** * 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) { if (mDestroy) { return; } WXDomObject parent = mRegistry.get(parentRef); WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId); if (parent == null) { if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_ADDELEMENT); } return; } WXDomObject domObject = parseInner(dom); if (domObject == null || mRegistry.containsKey(domObject.ref)) { if (WXEnvironment.isApkDebugable()) { WXLogUtils.e("[WXDomStatement] addDom error!!"); } if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_ADDELEMENT); } return; } transformStyle(domObject, true); if (domObject.isFixed()) { WXDomObject rootDom = mRegistry.get(WXDomObject.ROOT); if (rootDom == null) { return; } rootDom.add2FixedDomList(domObject.ref); } parent.add(domObject, index); //Create component in dom thread final WXComponent component = mWXRenderManager.createComponentOnDomThread(mInstanceId, domObject, parentRef, index); AddDomInfo addDomInfo = new AddDomInfo(); addDomInfo.component = component; mAddDom.put(domObject.ref, addDomInfo); mNormalTasks.add(new IWXRenderTask() { @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, component, parentRef, index); }catch (Exception e){ e.printStackTrace(); WXLogUtils.e("add component failed."+e.getMessage()); } } }); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_SUCCESS); } } /** * 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 {@link WXDomObject#ref} of the dom to be moved. * @param parentRef {@link WXDomObject#ref} 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, final 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(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_MOVEELEMENT); } return; } domObject.parent.remove(domObject); parentObject.add(domObject, index); mNormalTasks.add(new IWXRenderTask() { @Override public void execute() { mWXRenderManager.moveComponent(mInstanceId, ref, parentRef, index); } }); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.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 {@link WXDomObject#ref} 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(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_REMOVEELEMENT); } return; } WXDomObject parent = domObject.parent; if (parent == null) { if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_REMOVEELEMENT); } return; } clearRegistryForDom(domObject); parent.remove(domObject); mNormalTasks.add(new IWXRenderTask() { @Override public void execute() { mWXRenderManager.removeComponent(mInstanceId, ref); } }); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_SUCCESS); } } /** * Clear the mapping relationship between {@link WXDomObject#ref} and {@link WXDomObject}. * The mapping info is stored in {@link #mRegistry}. * @param domObject */ private void clearRegistryForDom(WXDomObject domObject) { int count = domObject.childCount(); mRegistry.remove(domObject.ref); for (int i = count - 1; i >= 0; --i) { clearRegistryForDom(domObject.getChild(i)); } } /** * Update the {@link WXDomObject#attr} according to the given attribute. Then creating a * command object for updating corresponding view and put the command object in the queue. * @param ref {@link WXDomObject#ref} of the dom. * @param attrs the new style. This style is only a part of the full attribute set, and will be * merged into {@link WXDomObject#attr} * @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(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_UPDATEATTRS); } return; } domObject.updateAttr(attrs); mNormalTasks.add(new IWXRenderTask() { @Override public void execute() { mWXRenderManager.updateAttrs(mInstanceId, domObject.ref, attrs); } }); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_SUCCESS); } } /** * Update the {@link WXDomObject#style} according to the given style. Then creating a * command object for updating corresponding view and put the command object in the queue. * @param ref {@link WXDomObject#ref} of the dom. * @param style the new style. This style is only a part of the full style, and will be merged * into {@link WXDomObject#style} * @see #updateAttrs(String, JSONObject) */ void updateStyle(String ref, JSONObject style) { if (mDestroy) { return; } WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId); WXDomObject domObject = mRegistry.get(ref); if (domObject == null) { if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_UPDATESTYLE); } return; } domObject.updateStyle(style); transformStyle(domObject, false); updateStyle(domObject, style); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.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.ref, update); } }); if (update.containsKey("padding") || update.containsKey("paddingTop") || update.containsKey("paddingLeft") || update.containsKey("paddingRight") || update.containsKey("paddingBottom") || update.containsKey("borderWidth")) { mNormalTasks.add(new IWXRenderTask() { @Override public void execute() { Spacing padding = domObject.getPadding(); Spacing border = domObject.getBorder(); mWXRenderManager.setPadding(mInstanceId, domObject.ref, padding, border); } }); } } /** * 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 {@link WXDomObject#ref} of the dom. * @param type the type of the event, this may be a plain event defined in * {@link com.taobao.weex.ui.component.WXEventType} 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); WXDomObject domObject = mRegistry.get(ref); if (domObject == null) { if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_ADDEVENT); } return; } domObject.addEvent(type); mNormalTasks.add(new IWXRenderTask() { @Override public void execute() { mWXRenderManager.addEvent(mInstanceId, ref, type); } }); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.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 {@link WXDomObject#ref} of the dom. * @param type the type of the event, this may be a plain event defined in * {@link com.taobao.weex.ui.component.WXEventType} 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); WXDomObject domObject = mRegistry.get(ref); if (domObject == null) { if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_ERR_DOM_REMOVEEVENT); } return; } domObject.removeEvent(type); mNormalTasks.add(new IWXRenderTask() { @Override public void execute() { mWXRenderManager.removeEvent(mInstanceId, ref, type); } }); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_SUCCESS); } } /** * Create a command object for scroll the given view to the specified position. * @param ref {@link WXDomObject#ref} 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); } }); mDirty = true; if (instance != null) { instance.commitUTStab(WXConst.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()); } }); mDirty = true; WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId); if (instance != null) { instance.commitUTStab(WXConst.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); } }); mDirty = true; WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId); if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_SUCCESS); } } /** * Parse the jsonObject to {@link WXDomObject} recursively * @param map the original JSONObject * @return Dom Object corresponding to the JSONObject. */ private WXDomObject parseInner(JSONObject map) { if (map == null || map.size() <= 0) { return null; } String type = (String) map.get("type"); WXDomObject domObject = WXDomObjectFactory.newInstance(type); if(domObject==null){ return null; } domObject.type = type; domObject.ref = (String) map.get("ref"); Object style = map.get("style"); if (style != null && style instanceof JSONObject) { domObject.style = new WXStyle(); putAll(domObject.style, (JSONObject) style); } Object attr = map.get("attr"); if (attr != null && attr instanceof JSONObject) { domObject.attr = new WXAttr(); putAll(domObject.attr, (JSONObject) attr); } Object event = map.get("event"); if (event != null && event instanceof JSONArray) { domObject.event = new WXEvent(); JSONArray eventArray = (JSONArray) event; int count = eventArray.size(); for (int i = 0; i < count; ++i) { domObject.event.add(eventArray.getString(i)); } } Object children = map.get("children"); if (children != null && children instanceof JSONArray) { domObject.children = new ArrayList<>(); JSONArray childrenArray = (JSONArray) children; int count = childrenArray.size(); for (int i = 0; i < count; ++i) { domObject.children.add(parseInner(childrenArray.getJSONObject(i))); } } return domObject; } /** * 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); } }); mDirty = true; WXSDKInstance instance = WXSDKManager.getInstance().getSDKInstance(mInstanceId); if (instance != null) { instance.commitUTStab(WXConst.DOM_MODULE, WXErrorCode.WX_SUCCESS); } } /** * Creating the mapping between {@link WXDomObject#ref} to {@link WXDomObject} * and store the mapping in {@link #mRegistry}. * Then, parse and copy style * from {@link WXDomObject#style} to {@link com.taobao.weex.dom.flex.CSSNode}. * Finally, {@link WXDomObject#children} is also added to * {@link com.taobao.weex.dom.flex.CSSNode#mChildren} if added is true. * The above procedure will be done recursively. * @param dom the original DOM Object * @param isAdd true for adding children of * {@link WXDomObject} {@link com.taobao.weex.dom.flex.CSSNode#mChildren} and parsing style, * false for only parsing style. */ private void transformStyle(WXDomObject dom, boolean isAdd) { if (dom == null) { return; } if (isAdd) { dom.young(); mRegistry.put(dom.ref, dom); } if (dom.style != null && dom.style.size() > 0) { CSSTransformFromStyle.transformStyle(dom); } int count = dom.childCount(); WXDomObject child; for (int i = 0; i < count; ++i) { child = dom.getChild(i); if (isAdd) { dom.add2Dom(child, i); } transformStyle(child, isAdd); } } static class AddDomInfo { public WXComponent component; } }