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Software Element | Deployed As | Description |
|---|---|---|
sousa-seq-tool | WAR | Sousa Sequence player and editor. |
sousa-page-tool | WAR | Sousa Page viewer and editor. |
sousa-api | JAR | The SequencerService API. |
sousa-impl | JAR | Implementations of the SequencerService interfaces. |
sousa-pack | Component | The SequencerService package. |
sousa-content | JAR | The Sousa Media Engine: plug-in media object support. |
opencsv | JAR | Third party support for CSV data files. |
Sequencer Service Design
The page object sequencer design grew out of the Gallery Tool developed for UC Berkeley. Where the Gallery Tool is organized around collections of images, Sousa is organized around a collection of content objects - either simple objects (text, images, etc.) or more complex ones (wrapped frames, page objects, etc.). Sousa is written as a Sakai tool that roughly follows Sakai tool development conventions. A SequencerService provides access to Sequences and Page objects (Layout). A second service, the EditChainService, provides access to EditChains (used to hold editing state).
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Handler | Media Type | HTML Tag | Template ID | Media Handled |
|---|---|---|---|---|
CEImage | image/* | IMAGE | content-image-00 | Images and simple animation. |
CEText | text/plain | DIV | content-text-00 | Plain text. |
CEStructuredText | text/html | DIV | content-text-00 | Structured text marked up by HTML. |
CEUrl | text/url | IFRAME | content-framed-00 | Remote web pages wrapped in an iFrame. |
CEGridLayout | sousa/grid-layout | DIV | content-text-00 | Sousa grid layout page object. |
CEVideo | video/* | EMBED | content-embeded-00 | Video objects including avi, mpg, and wmv. |
CEVideo | audio/* | EMBED | content-embeded-00 | Audio objects including wav. |
CECsv | text/csv | TABLE | content-table-00 | Data represented as comma separated values displayed as a table. |
Content Element handler objects include:
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content-text-00 | Text media elements including HTML markup. |
content-image-00 | Image media elements including simple animation. |
content-framed-00 | Framed media elements such as urls. |
content-embeded-00 |
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Embedded media elements such as audio and video |
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content-table-00 | Tabular presentation of material. |
content-text-01 | Text media elements including HTML markup. |
content-image-01 | Image media elements including simple animation. |
content-framed-01 | Framed media elements such as urls. |
content-embeded- |
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01 | Embedded media elements such as audio and video |
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content-table-01 | Tabular presentation of material. |
The numerical suffix distinguishes between table cells in a common row.
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If no media handler is available for a given media type, a "no thumb" image is displayed. Certain types of media may have placeholder icons displayed . This image is as a thumbnail - CSV data, for example. These images are included in the tool content.
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Handler | Media Type | Parameter 0 | Parameter 1 | Parameter 2 | Parameter 3 | Status |
|---|---|---|---|---|---|---|
CEImage | image/* | height | width | border |
| Display and Edit |
CEText | text/plain |
|
|
|
| Display and Edit |
CEStructuredText | text/html |
|
|
|
| Display Only |
CEUrl | text/url | height | width |
|
| Display and Edit |
CEGridLayout | sousa/grid-layout |
|
|
|
| Display and Edit |
CEVideo | video/* | height | width | autostart |
| Display and Edit |
CEAudio | audio/* | autostart |
|
|
| Display and Edit |
CECsv | text/csv | first-row-header | first-col-header | border |
| TBD |
Content Editing
Most Sousa content elements originate as a file. Thus, in order to edit content, users will need to upload and replace the content of an existing content resource. RSF provides support for file upload via its MultipartResolver support. See File Upload.
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