Building blocks
Metanno views are built from two kinds of blocks. The widgets of DataWidgetFactory are connected to a Store: they read its rows, save the edits and share the selected row with each other, and most views, like the ones of the tutorials, only use them. Under them, the components only display what they receive, and let you write what happens on each click or selection.
| Block | What it is |
|---|---|
| DataWidgetFactory | tables, texts, forms and PDFs connected to a Store, the usual way to build a view |
| AnnotatedText | a text with highlighted spans, reporting the text you select and the spans you click |
| AnnotatedImage | an image with boxes and shapes drawn on it, reporting the shapes you draw |
| Table | rows in an editable grid, reporting the cells you edit and select |
Use the components directly when the factory widgets do not fit, for instance to decide yourself what a text selection adds. The front page shows a text and a table built this way. All these blocks are Pret components: they work in Metanno tabs, notebook outputs and web apps alike.