Package org.eclipse.rap.rwt.remote

Class JsonMapping

java.lang.Object
org.eclipse.rap.rwt.remote.JsonMapping
public class JsonMapping extends Object
Provides utility methods that map common SWT types to their JSON representations used in the RAP protocol and back.
Since:
2.3
See Also:

  • Method Details

    • toJson

      public static JsonValue toJson(Widget widget)
      Returns the JSON representation for the given Widget. This method accepts null, which will be mapped to JsonValue.NULL. Disposed widgets cannot be mapped to JSON.
      Parameters:
      widget - the widget to encode or null, must not be disposed
      Returns:
      a JSON value that represents the given widget

    • toJson

      public static JsonValue toJson(Widget[] widgets)
      Returns the JSON representation for the given array of widgets. The array must not contain disposed widgets, as those cannot be mapped to JSON.
      Parameters:
      widgets - the array of widgets to encode, must not be null
      Returns:
      a JSON value that represents the given widget array
      Since:
      3.1

    • toJson

      public static JsonValue toJson(Point point)
      Returns the JSON representation for the given Point. This method accepts null, which will be mapped to JsonValue.NULL.
      Parameters:
      point - the Point to encode or null
      Returns:
      a JSON value that represents the given point

    • toJson

      public static JsonValue toJson(Point[] points)
      Returns the JSON representation for the given array Point. This method accepts null, which will be mapped to JsonValue.NULL.
      Parameters:
      points - the array Point to encode or null
      Returns:
      a JSON value that represents the given point
      Since:
      3.13

    • toJson

      public static JsonValue toJson(Rectangle rect)
      Returns the JSON representation for the given Rectangle. This method accepts null, which will be mapped to JsonValue.NULL.
      Parameters:
      rect - the Rectangle to encode or null
      Returns:
      a JSON value that represents the given rectangle

    • toJson

      public static JsonValue toJson(Color color)
      Returns the JSON representation for the given Color. This method accepts null, which will be mapped to JsonValue.NULL. Disposed colors cannot be mapped to JSON.
      Parameters:
      color - the Color to encode or null, must not be disposed
      Returns:
      a JSON value that represents the given color

    • toJson

      public static JsonValue toJson(Color color, int alpha)
      Returns the JSON representation for the given Color with an additional alpha (opacity) value. This method accepts null, which will be mapped to JsonValue.NULL regardless of the given alpha value. Disposed colors cannot be mapped to JSON.
      Parameters:
      color - the Color to encode or null, must not be disposed
      alpha - a value in the range of 0 (transparent) to 255 (opaque)
      Returns:
      a JSON value that represents the given color

    • toJson

      public static JsonValue toJson(RGB rgb)
      Returns the JSON representation for the given RGB. This method accepts null, which will be mapped to JsonValue.NULL.
      Parameters:
      rgb - the Color to encode or null
      Returns:
      a JSON value that represents the given color

    • toJson

      public static JsonValue toJson(RGB rgb, int alpha)
      Returns the JSON representation for the given RGB with an additional alpha (opacity) value. This method accepts null, which will be mapped to JsonValue.NULL regardless of the given alpha value.
      Parameters:
      rgb - the RGB to encode or null
      alpha - a value in the range of 0 (transparent) to 255 (opaque)
      Returns:
      a JSON value that represents the given rgb

    • toJson

      public static JsonValue toJson(Image image)
      Returns the JSON representation for the given Image. This method accepts null, which will be mapped to JsonValue.NULL. Disposed images cannot be mapped to JSON.
      Parameters:
      image - the Image to encode or null, must not be disposed
      Returns:
      a JSON value that represents the given rgb

    • toJson

      public static JsonValue toJson(Font font)
      Returns the JSON representation for the given Font. This method accepts null, which will be mapped to JsonValue.NULL. Disposed fonts cannot be mapped to JSON.
      Parameters:
      font - the Font to encode or null, must not be disposed
      Returns:
      a JSON value that represents the given font

    • toJson

      public static JsonValue toJson(FontData fontData)
      Returns the JSON representation for the given FontData. This method accepts null, which will be mapped to JsonValue.NULL.
      Parameters:
      fontData - the FontData to encode or null
      Returns:
      a JSON value that represents the given font data

    • toJson

      public static JsonValue toJson(Cursor cursor)
      Returns the JSON representation for the given Cursor. This method accepts null, which will be mapped to JsonValue.NULL.
      Parameters:
      cursor - the Cursor to encode or null
      Returns:
      a JSON value that represents the given cursor
      Since:
      3.1

    • readPoint

      public static Point readPoint(JsonValue value)
      Returns an instance of Point for the given JSON representation. This method returns null if the given JSON value is JsonValue.NULL.
      Parameters:
      value - a JsonValue that represents a point or JsonValue.NULL
      Returns:
      a Point that corresponds to the given JSON value or null

    • readRectangle

      public static Rectangle readRectangle(JsonValue value)
      Returns an instance of Rectangle for the given JSON representation. This method returns null if the given JSON value is JsonValue.NULL.
      Parameters:
      value - a JsonValue that represents a rectangle or JsonValue.NULL
      Returns:
      a Rectangle that corresponds to the given JSON value or null

    • readRGB

      public static RGB readRGB(JsonValue value)
      Returns an instance of RGB for the given JSON representation. This method returns null if the given JSON value is JsonValue.NULL.
      Parameters:
      value - a JsonValue that represents a color or JsonValue.NULL
      Returns:
      an RGB that corresponds to the given JSON value or null