Java Code Examples for com.google.gwt.json.client.JSONObject#get()

private static String extractFormName(RpcResult result) {
  String extraString = result.getExtra();
  if (extraString != null) {
    JSONValue extraJSONValue = JSONParser.parseStrict(extraString);
    JSONObject extraJSONObject = extraJSONValue.isObject();
    if (extraJSONObject != null) {
      JSONValue formNameJSONValue = extraJSONObject.get("formName");
      if (formNameJSONValue != null) {
        JSONString formNameJSONString = formNameJSONValue.isString();
        if (formNameJSONString != null) {
          return formNameJSONString.stringValue();
        }
      }
    }
  }
  return "Screen1";
}
 

/**
 * Extracts default preference values from the gadget metadata JSON object
 * returned from GGS.
 *
 * @param prefs the preference JSON object received from GGS.
 */
public void parseDefaultValues(JSONObject prefs) {
  if (prefs != null) {
    for (String pref : prefs.keySet()) {
      if (!has(pref)) {
        JSONObject prefJson = prefs.get(pref).isObject();
        if (prefJson != null) {
          JSONValue value = prefJson.get("default");
          if ((value != null) && (value.isString() != null)) {
            put(pref, value.isString().stringValue());
            log("Gadget pref '" + pref + "' = '" + get(pref) + "'");
          }
        } else {
          log("Invalid pref '" + pref + "' value in Gadget metadata.");
        }
      }
    }
  }
}
 

/**
 * Extracts default preference values from the gadget metadata JSON object
 * returned from GGS.
 *
 * @param prefs the preference JSON object received from GGS.
 */
public void parseDefaultValues(JSONObject prefs) {
  if (prefs != null) {
    for (String pref : prefs.keySet()) {
      if (!has(pref)) {
        JSONObject prefJson = prefs.get(pref).isObject();
        if (prefJson != null) {
          JSONValue value = prefJson.get("default");
          if ((value != null) && (value.isString() != null)) {
            put(pref, value.isString().stringValue());
            log("Gadget pref '" + pref + "' = '" + get(pref) + "'");
          }
        } else {
          log("Invalid pref '" + pref + "' value in Gadget metadata.");
        }
      }
    }
  }
}
 

private String extractFailure(final JSONObject response) {
    String failure = "n/a";
    JSONValue failureValue = response.get(FAILURE_DESCRIPTION);
    if (failureValue.isString() != null) {
        failure = failureValue.isString().stringValue();
    } else if (failureValue.isObject() != null) {
        JSONObject failureObject = failureValue.isObject();
        for (String key : failureObject.keySet()) {
            if (key.contains("failure") && failureObject.get(key).isString() != null) {
                failure = failureObject.get(key).isString().stringValue();
                break;
            }
        }
    }
    return failure;
}
 

/**
 * Helper function to extract a string value from given JSON object.
 *
 * @param json JSON object to extract the value from.
 * @param key key of the value to extract.
 * @return the string object extracted from JSON (can be null if the value
 *         does not exist or is invalid.
 */
private static String getJsonStringValue(JSONObject json, String key) {
  JSONValue value = json.get(key);
  JSONString string = (value == null) ? null : value.isString();
  if (string != null) {
    return string.stringValue();
  } else {
    return null;
  }
}
 

/**
 * Helper function to extract a long value from given JSON object.
 *
 * @param json JSON object to extract the value from.
 * @param key key of the value to extract.
 * @return the Long object extracted from JSON (can be null if the value does
 *         not exist or is invalid.
 */
private static Long getJsonLongValue(JSONObject json, String key) {
  JSONValue value = json.get(key);
  JSONNumber number = (value == null) ? null : value.isNumber();
  if (number != null) {
    return Math.round(number.doubleValue());
  } else {
    return null;
  }
}
 

/**
 * Helper function to extract a boolean value from given JSON object.
 *
 * @param json JSON object to extract the value from.
 * @param key key of the value to extract.
 * @return the Boolean object extracted from JSON (can be null if the value
 *         does not exist or is invalid.
 */
private static Boolean getJsonBooleanValue(JSONObject json, String key) {
  JSONValue value = json.get(key);
  JSONBoolean bool = (value == null) ? null : value.isBoolean();
  if (bool != null) {
    return bool.booleanValue();
  } else {
    return null;
  }
}
 

/**
 * Helper function to extract a string value from given JSON object.
 *
 * @param json JSON object to extract the value from.
 * @param key key of the value to extract.
 * @return the string object extracted from JSON (can be null if the value
 *         does not exist or is invalid.
 */
private static String getJsonStringValue(JSONObject json, String key) {
  JSONValue value = json.get(key);
  JSONString string = (value == null) ? null : value.isString();
  if (string != null) {
    return string.stringValue();
  } else {
    return null;
  }
}
 

/**
 * Helper function to extract a long value from given JSON object.
 *
 * @param json JSON object to extract the value from.
 * @param key key of the value to extract.
 * @return the Long object extracted from JSON (can be null if the value does
 *         not exist or is invalid.
 */
private static Long getJsonLongValue(JSONObject json, String key) {
  JSONValue value = json.get(key);
  JSONNumber number = (value == null) ? null : value.isNumber();
  if (number != null) {
    return Math.round(number.doubleValue());
  } else {
    return null;
  }
}
 

/**
 * Helper function to extract a boolean value from given JSON object.
 *
 * @param json JSON object to extract the value from.
 * @param key key of the value to extract.
 * @return the Boolean object extracted from JSON (can be null if the value
 *         does not exist or is invalid.
 */
private static Boolean getJsonBooleanValue(JSONObject json, String key) {
  JSONValue value = json.get(key);
  JSONBoolean bool = (value == null) ? null : value.isBoolean();
  if (bool != null) {
    return bool.booleanValue();
  } else {
    return null;
  }
}
 

private void loadComponents(JSONObject jsonObj) {
  // TODO: Review JSON format. There has to be a better way to store and retrieve this info.
  JSONObject shownComponents = jsonObj.get("shownComponentTypes").isObject();
  JSONObject shownComponentBlocks = jsonObj.get("shownBlockTypes").isObject().get("ComponentBlocks").isObject();
  for (int i = 0; i < componentTree.getItemCount(); ++i) {
    TreeItem componentCatItem = componentTree.getItem(i);
    CheckBox componentCatCb = (CheckBox)componentCatItem.getWidget();
    String catName = componentCatCb.getName().toUpperCase();
    if (shownComponents.containsKey(catName)) {
      JSONArray jsonComponentCat = shownComponents.get(catName).isArray();
      if (jsonComponentCat.size() > 0) {
        componentCatCb.setValue(true, false);
        HashMap<String, String> jsonComponentHash = new HashMap<String, String>();
        for (int j = 0; j < jsonComponentCat.size(); ++j) {
          JSONValue jsonComponentHashCat = jsonComponentCat.get(j);
          if (jsonComponentHashCat != null) {
            jsonComponentHash.put(jsonComponentHashCat.isObject().get("type").isString().stringValue(), "type");
          }
        }
        for (int j = 0; j < componentCatItem.getChildCount(); ++j) {
          TreeItem componentItem = componentCatItem.getChild(j);
          CheckBox componentCb = (CheckBox) componentItem.getWidget();
          if (jsonComponentHash.get(componentCb.getName()) != null) {
            componentCb.setValue(true, false);
            JSONArray jsonComponentBlockProps = shownComponentBlocks.get(componentCb.getName()).isArray();
            HashMap<String, String> componentPropHash = new HashMap<String, String>();
            for (int k = 0; k < jsonComponentBlockProps.size(); ++k) {
              JSONObject jsonComponentBlockType = jsonComponentBlockProps.get(k).isObject();
              String componentBlockType = jsonComponentBlockType.get("type").isString().stringValue();
              if ("component_set_get".equals(componentBlockType)) {
                componentPropHash.put(jsonComponentBlockType.get("mutatorNameToValue").isObject().get("property_name").isString().stringValue(), "PROP");
              } else if ("component_event".equals(componentBlockType)) {
                JSONValue mutatorValue = jsonComponentBlockType.get("mutatorNameToValue");
                JSONValue event_name = mutatorValue.isObject().get("event_name");
                componentPropHash.put(event_name.isString().stringValue(), "EVENT");
              } else if ("component_method".equals(componentBlockType)) {
                componentPropHash.put(jsonComponentBlockType.get("mutatorNameToValue").isObject().get("method_name").isString().stringValue(), "METHOD");
              }
            }
            for (int k = 0; k < componentItem.getChildCount(); ++k) {
              TreeItem componentPropItem = componentItem.getChild(k);
              CheckBox componentPropCb = (CheckBox) componentPropItem.getWidget();
              if (componentPropHash.get(componentPropCb.getText()) != null) {
                componentPropCb.setValue(true, false);
              } else {
                componentPropCb.setValue(false, false);
              }
            }

          } else {
            componentCb.setValue(false, false);
            toggleChildren(componentItem, false);
          }
        }
      } else {
        componentCatCb.setValue(false, false);
        toggleChildren(componentCatItem, false);
      }
    } else {
      componentCatCb.setValue(false, false);
      toggleChildren(componentCatItem, false);
    }
  }
}
 

public static String getString(JSONObject json, String name) {
    JSONValue jsonVal = json.get(name);
    JSONString jsonString = (jsonVal == null) ? null : jsonVal.isString();
    return (jsonString == null) ? null : jsonString.stringValue();
}
 

/**
 * Parses JSON object to extract metadata information.
 *
 * @param gadget JSON object returned in the gadget field from the server.
 */
public void parse(JSONObject gadget) {
  iframeUrl = getJsonStringValue(gadget, "iframeUrl");
  // Get rid of the protocol as we should rely on the browser to do the right
  // thing with "//" as the beginning of the url.
  // By doing this it also works around an issue in shindig where it shouldn't
  // put "//" in front of "http://" see:
  // https://issues.apache.org/jira/browse/SHINDIG-1460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928110#action_12928110
  // This work around may no longer be needed on the next version of shindig
  // Added null check on iframeUrl.Issue #166:Client shiny on broken gadget.
  if(iframeUrl != null) {
    iframeUrl = iframeUrl.replaceFirst("^//http[s]?://", "//");
  }
  url = getJsonStringValue(gadget, "url");
  moduleId = getJsonStringValue(gadget, "moduleId");
  title = getJsonStringValue(gadget, "title");
  titleUrl = getJsonStringValue(gadget, "titleUrl");
  directoryTitle = getJsonStringValue(gadget, "directoryTitle");
  thumbnail = getJsonStringValue(gadget, "thumbnail");
  screenshot = getJsonStringValue(gadget, "screenshot");
  author = getJsonStringValue(gadget, "author");
  authorEmail = getJsonStringValue(gadget, "authorEmail");
  height = getJsonLongValue(gadget, "height");
  width = getJsonLongValue(gadget, "width");
  scrolling = getJsonBooleanValue(gadget, "scrolling");
  // Added null check on gadget.get("userPrefs").Issue #166:Client shiny on broken gadget.
  if(gadget.get("userPrefs") != null) {
    userPrefs.parseDefaultValues(gadget.get("userPrefs").isObject());
  }
  JSONObject gadgetViews = getJsonObjectValue(gadget, "views");
  if (gadgetViews != null) {
    View lastView = null;
    for (String viewName : gadgetViews.keySet()) {
      JSONObject viewJson = gadgetViews.get(viewName).isObject();
      View v = new View();
      v.type = viewName;
      v.preferredHeight = getJsonLongValue(viewJson, "preferredHeight");
      v.preferredWidth = getJsonLongValue(viewJson, "preferredWidth");
      views.put(v.type, v);
      lastView = v;
    }
  }
}
 

/**
 * Parses JSON object to extract metadata information.
 *
 * @param gadget JSON object returned in the gadget field from the server.
 */
public void parse(JSONObject gadget) {
  iframeUrl = getJsonStringValue(gadget, "iframeUrl");
  // Get rid of the protocol as we should rely on the browser to do the right
  // thing with "//" as the beginning of the url.
  // By doing this it also works around an issue in shindig where it shouldn't
  // put "//" in front of "http://" see:
  // https://issues.apache.org/jira/browse/SHINDIG-1460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928110#action_12928110
  // This work around may no longer be needed on the next version of shindig
  // Added null check on iframeUrl.Issue #166:Client shiny on broken gadget.
  if(iframeUrl != null) {
    iframeUrl = iframeUrl.replaceFirst("^//http[s]?://", "//");
  }
  url = getJsonStringValue(gadget, "url");
  moduleId = getJsonStringValue(gadget, "moduleId");
  title = getJsonStringValue(gadget, "title");
  titleUrl = getJsonStringValue(gadget, "titleUrl");
  directoryTitle = getJsonStringValue(gadget, "directoryTitle");
  thumbnail = getJsonStringValue(gadget, "thumbnail");
  screenshot = getJsonStringValue(gadget, "screenshot");
  author = getJsonStringValue(gadget, "author");
  authorEmail = getJsonStringValue(gadget, "authorEmail");
  height = getJsonLongValue(gadget, "height");
  width = getJsonLongValue(gadget, "width");
  scrolling = getJsonBooleanValue(gadget, "scrolling");
  // Added null check on gadget.get("userPrefs").Issue #166:Client shiny on broken gadget.
  if(gadget.get("userPrefs") != null) {
    userPrefs.parseDefaultValues(gadget.get("userPrefs").isObject());
  }
  JSONObject gadgetViews = getJsonObjectValue(gadget, "views");
  if (gadgetViews != null) {
    View lastView = null;
    for (String viewName : gadgetViews.keySet()) {
      JSONObject viewJson = gadgetViews.get(viewName).isObject();
      View v = new View();
      v.type = viewName;
      v.preferredHeight = getJsonLongValue(viewJson, "preferredHeight");
      v.preferredWidth = getJsonLongValue(viewJson, "preferredWidth");
      views.put(v.type, v);
      lastView = v;
    }
  }
}
 

/**
 * Helper function to extract a JSONObject from a JSONValue if it exists.
 *
 * @param json JSON object to extract the value from.
 * @param key key of the value to extract.
 * @return the JSONObject if it exists.
 */
private static JSONObject getJsonObjectValue(JSONObject json, String key) {
  JSONValue value = json.get(key);
  return (value != null) ? value.isObject() : null;
}
 

/**
 * Helper function to extract a JSONObject from a JSONValue if it exists.
 *
 * @param json JSON object to extract the value from.
 * @param key key of the value to extract.
 * @return the JSONObject if it exists.
 */
private static JSONObject getJsonObjectValue(JSONObject json, String key) {
  JSONValue value = json.get(key);
  return (value != null) ? value.isObject() : null;
}