From 84cb9f7bff1f15305b06526e0e162d0973b69a69 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Abel=20G=C3=B3mez?= <abel.gomez@unizar.es>
Date: Wed, 9 Mar 2016 17:05:18 +0100
Subject: [PATCH] Add toolbar button to open the Markdown View directly from
 the Markdown Editor

---
 plugin/plugin.xml                             | 34 ++++++++++++++++
 .../markdown/commands/OpenMdView.java         | 39 +++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 plugin/src/winterwell/markdown/commands/OpenMdView.java

diff --git a/plugin/plugin.xml b/plugin/plugin.xml
index dddb1b3..8d043e7 100755
--- a/plugin/plugin.xml
+++ b/plugin/plugin.xml
@@ -42,6 +42,21 @@
                style="push">
          </command>
       </menuContribution>
+      <menuContribution
+            allPopups="false"
+            locationURI="toolbar:org.eclipse.ui.main.toolbar?after=additions">
+         <toolbar
+               id="winterwell.markdown.MarkdownEditor">
+            <command
+                  commandId="winterwell.markdown.commands.OpenMdView"
+                  icon="icons/notepad.gif"
+                  style="push">
+               <visibleWhen
+                     checkEnabled="true">
+               </visibleWhen>
+            </command>
+         </toolbar>
+      </menuContribution>
    </extension>
    <extension
          point="org.eclipse.ui.commands">
@@ -50,6 +65,10 @@
             id="winterwell.markdown.commands.OpenGfmView"
             name="Open GitHub Flavored Markdown View">
       </command>
+      <command
+            id="winterwell.markdown.commands.OpenMdView"
+            name="Open Markdown View">
+      </command>
       <command
             defaultHandler="winterwell.markdown.commands.Preferences"
             id="winterwell.markdown.commands.Preferences"
@@ -121,5 +140,20 @@
          </action>
       </actionSet>
    </extension>
+   <extension
+         point="org.eclipse.ui.handlers">
+      <handler
+            class="winterwell.markdown.commands.OpenMdView"
+            commandId="winterwell.markdown.commands.OpenMdView">
+         <activeWhen>
+            <with
+                  variable="activeEditorId">
+               <equals
+                     value="winterwell.markdown.editors.MarkdownEditor">
+               </equals>
+            </with>
+         </activeWhen>
+      </handler>
+   </extension>
 
 </plugin>
diff --git a/plugin/src/winterwell/markdown/commands/OpenMdView.java b/plugin/src/winterwell/markdown/commands/OpenMdView.java
new file mode 100644
index 0000000..f36d7bd
--- /dev/null
+++ b/plugin/src/winterwell/markdown/commands/OpenMdView.java
@@ -0,0 +1,39 @@
+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.handlers.HandlerUtil;
+
+import winterwell.markdown.LogUtil;
+
+public class OpenMdView extends AbstractHandler {
+
+	@Override
+	public Object execute(final ExecutionEvent event) throws ExecutionException {
+		try {
+	        IWorkbenchPage activePage = HandlerUtil.getActiveWorkbenchWindow(event).getActivePage();
+	        String mdViewId = "winterwell.markdown.views.MarkdownPreview";
+	        IViewPart mdView = activePage.showView(mdViewId);
+	        activePage.activate(mdView);
+		} catch (PartInitException e) {
+			showError(e);
+	    } catch (Exception e) {
+	    	showError(e);
+	    }		
+		return null;
+	}
+
+	private void showError(Exception e) {
+		String title = "Exception while opening Markdown View";
+		String message = title+" (winterwell.markdown.views.MarkdownPreview)"
+				+"\nCheck Error Log View";
+		LogUtil.error(message, e);
+		MessageDialog.openError(Display.getDefault().getActiveShell(), title , message);
+	}
+}