File viewer for Vaadin: ### Log viewer/watcher glogg
This add-on works similarly to the popular log viewer software called glogg.
Enables:
- Viewing huge files, especially logs, without performance or ram usage loss
- Monitoring changes in displayed files and dynamically extending the content
- File search
- Dynamic extension of search results with changes in files (new entries)
Requires @Push enabled for stable and comfortable work
Each file is indexed before being displayed and only a part is streamed on demand (50 rows per request when scrolling). Files are not stored in memory.
Styling
Since the extension uses default vaadin components, all used components have been made available for modification
via getters.
If you want to display the entire log line without text-wrapping, you need to extend your style file vaadin-grid.css about this entry:
:host([theme~='log']) [part~='cell']:not([part~='details-cell']) {
white-space: break-spaces;
}
Additional configuration
- You can disable/hide polling configuration and also search bar. To do that you have to pass configuration to the constructor of the FileViewer
FileViewer viewer = new FileViewer(new FileViewerConfig(){
@Override
public boolean pollingEnabled() {
return false;
}
@Override
public int pollingInterval() {
return 1;
}
@Override
public boolean searchViewVisible() {
return false;
}
});
Layout structure
|---------------------------------------------------------------|
| FileViewer - VerticalLayout |
| |---------------------------------------------------------| |
| | PollingMenuBar - MenuBar | |
| |---------------------------------------------------------| |
| | FileTabSheet - TabSheet | |
| | |---------------------------------------------------| | |
| | | FileTab - Div | | |
| | | |---------------------------------------------| | | |
| | | | FileContentGrid - Grid | | | |
| | | |---------------------------------------------| | | |
| | | | FileSearchLayout - VerticalLayout | | | |
| | | | |---------------------------------------| | | | |
| | | | | SearchBarFields - MenuBar | | | | |
| | | | |---------------------------------------| | | | |
| | | | | SearchResultGrid - Grid | | | | |
| | | | |---------------------------------------| | | | |
| | | | | | | |
| | | | --------------------------------------------| | | |
| | |---------------------------------------------------| | |
| |---------------------------------------------------------| |
|---------------------------------------------------------------|