| [e4-dev] Dynamic CSS Theme Switcher |
|
All, @Paul, tanks for fixing bug 278369 so
quickly, the Theme Switcher is working again The contacts demo now contains a dynamic
css theme switcher. You can switch at runtime from
to
using the Themes menu. The code is in org.eclipse.e4.demo.contacts.handlers.ThemeUtil.java.
Suggestions for improvements are very welcome. Currently it is using the
IWorkbench injected in the corresponding Handler’s execute method. Then
getting the shell and the display. Currently the css engine is a property in
the display, I did not find a better way of getting it… Here is the snippet: public static void
switchTheme(IWorkbench workbench, final String css) { if (workbench instanceof Workbench) { Workbench
wb = (Workbench) workbench; final Shell shell = (Shell) wb.getWindow(); Display
display = shell.getDisplay(); final CSSEngine engine =
(CSSEngine) display .getData("org.eclipse.e4.ui.css.core.engine"); display.syncExec(new Runnable() { public void run() { try { URL
url = "">resolve(new URL( "platform:/plugin/org.eclipse.e4.demo.contacts/css/" +
css)); InputStreamReader
streamReader = new
InputStreamReader( url.openStream()); engine.reset(); engine.parseStyleSheet(streamReader); engine.applyStyles(shell,
true, false); }
catch (MalformedURLException e) { // TODO
Auto-generated catch block e.printStackTrace(); }
catch (IOException e) { // TODO
Auto-generated catch block e.printStackTrace(); } } }); } Currently the defaults for UI elements
not using css are NOT resetted to SWT defaults. So, all the css files must have
exactly the same elements with different values. I tried engine.applyStyles(shell, true, true); // The red true is supposed to reset to SWT
defaults but this gives strange results, I have
filed bug 278381 for that… But besides that, it’s great to
see the dynamic css theme change working in an e4 RCP app, perhaps that would
be a nice feature for the bootstrap workbench. Best regards, Kai Kai Tödter Siemens AG Corporate Technology Architecture CT SE 2 Otto-Hahn-Ring 6 81739 Munich, Germany Phone: +49 89 636-41064 Fax: +49 89 636-45450 mailto: kai.toedter@xxxxxxxxxxx Internet: www.siemens.com/corporate-technology Siemens Aktiengesellschaft: Chairman of
the Supervisory Board: Gerhard Cromme; Managing Board: Peter Loescher,
Chairman, President and Chief Executive Officer; Heinrich Hiesinger, Joe
Kaeser, Rudi Lamprecht, Eduardo Montes, Juergen Radomski, Erich R. Reinhardt,
Hermann Requardt, Uriel J. Sharef, Peter Y. Solmssen, Klaus Wucherer;
Registered offices: Berlin and Munich; Commercial registries: Berlin
Charlottenburg, HRB 12300, Munich, HRB 6684; WEEE-Reg.-No. DE 23691322 |
