movian-metadata |

appendItem(String URI, [String type], [Object metadata])

Append an item to the page. This should be used to populate data when page.type == ‘directory’

URI - URI to be opened when the item is activated (clicked)
type - Type of the item
- directory - Directory that can be browsed
- file - Any type of file or unknown file format
- video - Video file
- audio - Audio track
- image - Image that can be displayed
- album - Collection of audio tracks
- station - Icecast/shoutcast music station (see di.fm plugin for example)
metadata - Additional information about the item
Depending on the type of item, different information will be visible:
- video : following properties are displayed
  - title
  - icon
  - description
  - duration
  - rating
  - year
  - genre
- directory : following properties are displayed
  - title
  - icon
- item : following properties are displayed
  - title
  - description

metadata visible

movian 显示使用的是 glw ui，布局文件为 .view，默认为 showtime/glwskins/flat

以 type:video 为例来说明显示

pages/video.view 中搜索 metadata 可以搜索到使用了

max: $self.media.metadata.duration;
caption: $self.media.metadata.title;
source: $self.media.metadata.icon;

因此 metadata 是携带数据给 UI 用于显示，部分数据是在默认结构中使用到的，这部分可以直接使用对应的 key。
也可以进行扩展，同时使用自行设计的 UI，例如插件 somafm

  page.options.createInt('childTilesX', 'Tiles by X', 6, 1, 10, 1, '', function(v) {
      page.metadata.childTilesX = v;
  }, true);

  page.options.createInt('childTilesY', 'Tiles by Y', 2, 1, 4, 1, '', function(v) {
      page.metadata.childTilesY = v;
  }, true);

  page.options.createBool('informationBar', 'Information Bar', 1, function(v) {
      page.metadata.informationBar = v;
  }, true);

在 view 中使用

  .childTilesX = $page.model.metadata.childTilesX ?? 6;
  .childTilesY = $page.model.metadata.childTilesY ?? 2;

metadata 沟通 js 和 ui