com.google.gwt.chrome.storage.StorageResult.java Source code

Introduction

Here is the source code for com.google.gwt.chrome.storage.StorageResult.java

Source

package com.google.gwt.chrome.storage;

import com.google.gwt.core.client.JavaScriptObject;

/**
 * Each call to chrome.[storage area].get will end up with an object where keys
 * are requested keys and values are corresponding values.
 * 
 * This is convenient class to automatically cast types of the result to the T
 * type.
 * 
 * @author Pawel Psztyc
 *
 */
public class StorageResult<T> extends JavaScriptObject {
    protected StorageResult() {
    }

    /**
     * Get value for given key.
     * @param key requested key.
     * @return T object or null if not found.
     */
    public final native T get(String key) /*-{
                                          return this[key];
                                          }-*/;

    /**
     * Get boolean value for given key.
     * @param key requested key 
     * @return
     */
    public final native Boolean getBoolean(String key) /*-{
                                                       if(!(key in this) || this[key] === null || this[key] === undefined){
                                                       return null;
                                                       }
                                                       if(typeof this[key] !== 'boolean'){
                                                       console.warn('Trying to cast ' + key + ' key on object ' , this , ' to boolean but it is a type of ', typeof this[key]);
                                                       return null;
                                                       }
                                                       if(this[key]){
                                                       return @java.lang.Boolean::TRUE;
                                                       }
                                                       return @java.lang.Boolean::FALSE;
                                                       }-*/;

    /**
     * Get double value for given key.
     * @param key requested key 
     * @return
     */
    public final native Double getDouble(String key) /*-{
                                                     if(!(key in this) || this[key] === null || this[key] === undefined){
                                                     return null;
                                                     }
                                                     if(typeof this[key] !== 'number'){
                                                     console.warn('Trying to cast ' + key + ' key on object ' , this , ' to number but it is a type of ', typeof this[key]);
                                                     return null;
                                                     }
                                                     return @java.lang.Double::new(D)(this[key]);
                                                     }-*/;

    /**
     * Get JavaScriptObject value for given key.
     * @param key requested key 
     * @return
     */
    public final native JavaScriptObject getObject(String key) /*-{
                                                               return this[key];
                                                               }-*/;

    /**
     * Get value for given key.
     * This method return a value of any Object.
     * @param key key requested key.
     * @return
     */
    public final native Object getAny(String key) /*-{
                                                  return this[key];
                                                  }-*/;

    /**
     * @return Object's keys
     */
    public final native String[] getKeys() /*-{
                                           var i = 0;
                                           var result = [];
                                           for (var key in this) {
                                           if (this.hasOwnProperty(key)) {
                                           result[i++] = key;
                                           }
                                           }
                                           return result;
                                           }-*/;
}