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package scopes
import (
"encoding/json"
)
type PreviewWidget map[string]interface{}
/*
NewPreviewWidget creates a preview widget with the given name and type.
Widget type specific attributes can be set directly with
AddAttributeValue(), or mapped to result attributes with
AddAttributeMapping().
A list of available widget types and their associated attributes is
available here:
http://developer.ubuntu.com/api/scopes/sdk-14.10/previewwidgets/
*/
func NewPreviewWidget(id, widgetType string) PreviewWidget {
return PreviewWidget{"id": id, "type": widgetType}
}
// Id returns the name of this widget.
func (widget PreviewWidget) Id() string {
return widget["id"].(string)
}
// WidgetType returns the type of this widget.
func (widget PreviewWidget) WidgetType() string {
return widget["type"].(string)
}
// AddAttributeValue sets a widget attribute to a particular value.
func (widget PreviewWidget) AddAttributeValue(key string, value interface{}) {
widget[key] = value
}
// AddAttributeMapping maps a widget attribute to a named result attribute.
func (widget PreviewWidget) AddAttributeMapping(key, fieldName string) {
var components map[string]interface{}
if comp, ok := widget["components"]; ok {
components = comp.(map[string]interface{})
} else {
components = make(map[string]interface{})
widget["components"] = components
}
components[key] = fieldName
}
// AddWidget adds a child widget to this widget.
// This only makes sense for expandable type widgets.
func (widget PreviewWidget) AddWidget(child PreviewWidget) {
if widget.WidgetType() != "expandable" {
panic("Can only add widgets to expandable type widgets")
}
subwidgets, _ := widget["widgets"].([]PreviewWidget)
widget["widgets"] = append(subwidgets, child)
}
func (widget PreviewWidget) data() ([]byte, error) {
return json.Marshal(widget)
}
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