--- /dev/null
+package winterwell.markdown.commands;
+
+import org.eclipse.core.commands.AbstractHandler;
+import org.eclipse.core.commands.ExecutionEvent;
+import org.eclipse.core.commands.ExecutionException;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.ui.IViewPart;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.PartInitException;
+import org.eclipse.ui.PlatformUI;
+
+import winterwell.markdown.LogUtil;
+
+public class OpenGfmView extends AbstractHandler {
+
+ @Override
+ public Object execute(final ExecutionEvent event) throws ExecutionException {
+ try {
+ IWorkbenchPage activePage = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
+ String gfmViewId = "code.satyagraha.gfm.viewer.views.GfmView";
+ IViewPart gfmView = activePage.showView(gfmViewId);
+ activePage.activate(gfmView);
+ } catch (PartInitException e) {
+ showError(e);
+ } catch (Exception e) {
+ showError(e);
+ }
+ return null;
+ }
+
+ private void showError(Exception e) {
+ String title = "Exception while opening GitHub Flavored Markdown View";
+ String message = title+" (code.satyagraha.gfm.viewer.views.GfmView)"
+ +"\nCheck Error Log View and continue at https://github.com/winterstein/Eclipse-Markdown-Editor-Plugin/issues/42"
+ +"\n\nYou can also right-click file in Project Explorer"
+ +"\n and select \"Show in GFM view\".";
+ LogUtil.error(message, e);
+ MessageDialog.openError(Display.getDefault().getActiveShell(), title , message);
+ }
+}