content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.weex.appfram.clipboard;
  
  import android.content.ClipData;
  import android.content.ClipboardManager;
  import android.content.Context;
  import android.content.Intent;
  import android.content.res.AssetFileDescriptor;
  import android.net.Uri;
  import android.support.annotation.Nullable;
  
  import org.apache.weex.bridge.JSCallback;
  import org.apache.weex.annotation.JSMethod;
  import org.apache.weex.common.WXModule;
  import org.apache.weex.utils.WXLogUtils;
  
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.util.HashMap;
  import java.util.Map;
  
  
  public class WXClipboardModule extends WXModule implements IWXClipboard {
  
      private final String CLIP_KEY = "WEEX_CLIP_KEY_MAIN";
  
      private static final String RESULT = "result";
      private static final String DATA = "data";
  
      private static final String RESULT_OK = "success";
      private static final String RESULT_FAILED = "failed";
  
      @Override
      @JSMethod
      public void setString(String text) {
          if(null == text) {
              return;
          }
  
          Context context = mWXSDKInstance.getContext();
          ClipboardManager clipboard = (ClipboardManager) context.getSystemService(context.CLIPBOARD_SERVICE);
          ClipData clip = ClipData.newPlainText(CLIP_KEY, text);
          clipboard.setPrimaryClip(clip);
      }
  
      @Override
      @JSMethod
      public void getString(@Nullable JSCallback callback) {
          Context context = mWXSDKInstance.getContext();
          ClipboardManager clipboard = (ClipboardManager) context.getSystemService(Context.CLIPBOARD_SERVICE);
  
          Map<String, Object> map = new HashMap<>(2);
          ClipData clip = clipboard.getPrimaryClip();
          if (clip != null && clip.getItemCount() > 0) {
              ClipData.Item item = clip.getItemAt(0);
              CharSequence text = coerceToText(context, item);
  
              map.put(RESULT, text != null ? RESULT_OK : RESULT_FAILED);
              map.put(DATA, text != null ? text : "");
          } else {
              map.put(RESULT, RESULT_FAILED);
              map.put(DATA, "");
          }
  
          if (null != callback) {
              callback.invoke(map);
          }
      }
  
      @Nullable
      private CharSequence coerceToText(Context context, ClipData.Item item) {
          // Condition 1. just a simple text
          CharSequence text = item.getText();
          if (text != null) {
              return text;
          }
  
          // Condition 2. a URI value
          Uri uri = item.getUri();
          if (uri != null) {
              InputStreamReader reader = null;
              FileInputStream stream = null;
              try {
                  AssetFileDescriptor assetFileDescriptor = context.getContentResolver().openTypedAssetFileDescriptor(uri, "text/*", null);
                  stream = assetFileDescriptor.createInputStream();
                  reader = new InputStreamReader(stream, "UTF-8");
  
                  StringBuilder builder = new StringBuilder(128);
                  char[] buffer = new char[8192];
                  int len;
                  while ((len = reader.read(buffer)) > 0) {
                      builder.append(buffer, 0, len);
                  }
                  return builder.toString();
  
              } catch (FileNotFoundException e) {
                  //  ignore.
              } catch (IOException e) {
                  WXLogUtils.w("ClippedData Failure loading text.", e);
              } finally {
                  if (reader != null) {
                      try {
                          reader.close();
                      } catch (IOException e) {
                          // ignore
                      }
                  }
                  if (stream != null) {
                      try {
                          stream.close();
                      } catch (IOException e) {
                          // ignore
                      }
                  }
              }
  
              return uri.toString();
          }
  
          // Condition 3.  an intent.
          Intent intent = item.getIntent();
          if (intent != null) {
              return intent.toUri(Intent.URI_INTENT_SCHEME);
          }
  
          // else case
          return null;
      }
  }
  