Home | History | Annotate | Download | only in setup 
      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.layoutlib.bridge.intensive.setup;
     18 
     19 import com.android.ide.common.rendering.api.ILayoutPullParser;
     20 
     21 import org.kxml2.io.KXmlParser;
     22 import org.xmlpull.v1.XmlPullParserException;
     23 
     24 import java.io.File;
     25 import java.io.FileInputStream;
     26 import java.io.FileNotFoundException;
     27 import java.io.IOError;
     28 import java.io.InputStream;
     29 import java.util.HashMap;
     30 import java.util.Map;
     31 
     32 import static com.android.SdkConstants.ATTR_IGNORE;
     33 import static com.android.SdkConstants.EXPANDABLE_LIST_VIEW;
     34 import static com.android.SdkConstants.GRID_VIEW;
     35 import static com.android.SdkConstants.LIST_VIEW;
     36 import static com.android.SdkConstants.SPINNER;
     37 import static com.android.SdkConstants.TOOLS_URI;
     38 
     39 public class LayoutPullParser extends KXmlParser implements ILayoutPullParser{
     40 
     41     /**
     42      * @param layoutPath Must start with '/' and be relative to test resources.
     43      */
     44     public LayoutPullParser(String layoutPath) {
     45         if (layoutPath.startsWith("/")) {
     46             layoutPath = layoutPath.substring(1);
     47         }
     48         try {
     49             init(getClass().getClassLoader().getResourceAsStream(layoutPath));
     50         } catch (XmlPullParserException e) {
     51             throw new IOError(e);
     52         }
     53     }
     54 
     55     /**
     56      * @param layoutFile Path of the layout xml file on disk.
     57      */
     58     public LayoutPullParser(File layoutFile) {
     59         try {
     60             init(new FileInputStream(layoutFile));
     61         } catch (XmlPullParserException | FileNotFoundException e) {
     62             throw new IOError(e);
     63         }
     64     }
     65 
     66     private void init(InputStream stream) throws XmlPullParserException {
     67         setFeature(FEATURE_PROCESS_NAMESPACES, true);
     68         setInput(stream, null);
     69     }
     70 
     71     @Override
     72     public Object getViewCookie() {
     73         // TODO: Implement this properly.
     74         String name = super.getName();
     75         if (name == null) {
     76             return null;
     77         }
     78 
     79         // Store tools attributes if this looks like a layout we'll need adapter view
     80         // bindings for in the LayoutlibCallback.
     81         if (LIST_VIEW.equals(name) || EXPANDABLE_LIST_VIEW.equals(name) || GRID_VIEW.equals(name) || SPINNER.equals(name)) {
     82             Map<String, String> map = null;
     83             int count = getAttributeCount();
     84             for (int i = 0; i < count; i++) {
     85                 String namespace = getAttributeNamespace(i);
     86                 if (namespace != null && namespace.equals(TOOLS_URI)) {
     87                     String attribute = getAttributeName(i);
     88                     if (attribute.equals(ATTR_IGNORE)) {
     89                         continue;
     90                     }
     91                     if (map == null) {
     92                         map = new HashMap<String, String>(4);
     93                     }
     94                     map.put(attribute, getAttributeValue(i));
     95                 }
     96             }
     97 
     98             return map;
     99         }
    100 
    101         return null;
    102     }
    103 
    104     @Override
    105     @Deprecated
    106     public ILayoutPullParser getParser(String layoutName) {
    107         // Studio returns null.
    108         return null;
    109     }
    110 
    111 }
    112