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/*
 * Copyright 2008 Google Inc.
 * 
 * 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.google.gwt.http.client;

import com.google.gwt.xhr.client.XMLHttpRequest;

import java.util.ArrayList;
import java.util.List;

/**
 * A {@link Response} implementation based on a {@link XMLHttpRequest}.
 */
class ResponseImpl extends Response {

  private final XMLHttpRequest xmlHttpRequest;

  public ResponseImpl(XMLHttpRequest xmlHttpRequest) {
    this.xmlHttpRequest = xmlHttpRequest;

    assert isResponseReady();
  }

  @Override
  public String getHeader(String header) {
    StringValidator.throwIfEmptyOrNull("header", header);

    return xmlHttpRequest.getResponseHeader(header);
  }

  @Override
  public Header[] getHeaders() {
    String allHeaders = getHeadersAsString();
    String[] unparsedHeaders = allHeaders.split("\n");
    List
parsedHeaders = new ArrayList
(); for (String unparsedHeader : unparsedHeaders) { if (unparsedHeader == null || unparsedHeader.trim().isEmpty()) { continue; } int endOfNameIdx = unparsedHeader.indexOf(':'); if (endOfNameIdx < 0) { continue; } final String name = unparsedHeader.substring(0, endOfNameIdx).trim(); final String value = unparsedHeader.substring(endOfNameIdx + 1).trim(); Header header = new Header() { @Override public String getName() { return name; } @Override public String getValue() { return value; } @Override public String toString() { return name + " : " + value; } }; parsedHeaders.add(header); } return parsedHeaders.toArray(new Header[parsedHeaders.size()]); } @Override public String getHeadersAsString() { String headers = xmlHttpRequest.getAllResponseHeaders(); return headers != null ? headers : ""; } @Override public int getStatusCode() { return xmlHttpRequest.getStatus(); } @Override public String getStatusText() { return xmlHttpRequest.getStatusText(); } @Override public String getText() { return xmlHttpRequest.getResponseText(); } protected boolean isResponseReady() { return xmlHttpRequest.getReadyState() == XMLHttpRequest.DONE; } }




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