Remove UI dependencies to JCR.

[lgpl/argeo-commons.git] / jcr / org.argeo.cms.jcr.ui / src / org / argeo / cms / ui / viewers / JcrVersionCmsEditable.java

diff --git a/jcr/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/viewers/JcrVersionCmsEditable.java b/jcr/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/viewers/JcrVersionCmsEditable.java
new file mode 100644 (file)
index 0000000..298fbde
--- /dev/null
+++ b/jcr/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/viewers/JcrVersionCmsEditable.java
@@ -0,0 +1,94 @@
+package org.argeo.cms.ui.viewers;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.jcr.nodetype.NodeType;
+import javax.jcr.version.VersionManager;
+
+import org.argeo.api.cms.ux.CmsEditionEvent;
+import org.argeo.cms.ux.AbstractCmsEditable;
+import org.argeo.jcr.JcrException;
+import org.eclipse.rap.rwt.RWT;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+
+/** Provides the CmsEditable semantic based on JCR versioning. */
+public class JcrVersionCmsEditable extends AbstractCmsEditable {
+       private final String nodePath;// cache
+       private final VersionManager versionManager;
+       private final Boolean canEdit;
+
+       public JcrVersionCmsEditable(Node node) throws RepositoryException {
+               this.nodePath = node.getPath();
+               if (node.getSession().hasPermission(node.getPath(), Session.ACTION_SET_PROPERTY)) {
+                       // was Session.ACTION_ADD_NODE
+                       canEdit = true;
+                       if (!node.isNodeType(NodeType.MIX_VERSIONABLE)) {
+                               node.addMixin(NodeType.MIX_VERSIONABLE);
+                               node.getSession().save();
+                       }
+                       versionManager = node.getSession().getWorkspace().getVersionManager();
+               } else {
+                       canEdit = false;
+                       versionManager = null;
+               }
+
+               // bind keys
+               if (canEdit) {
+                       Display display = Display.getCurrent();
+                       display.setData(RWT.ACTIVE_KEYS, new String[] { "CTRL+RETURN", "CTRL+E" });
+                       display.addFilter(SWT.KeyDown, new Listener() {
+                               private static final long serialVersionUID = -4378653870463187318L;
+
+                               public void handleEvent(Event e) {
+                                       boolean ctrlPressed = (e.stateMask & SWT.CTRL) != 0;
+                                       if (ctrlPressed && e.keyCode == '\r')
+                                               stopEditing();
+                                       else if (ctrlPressed && e.keyCode == 'E')
+                                               stopEditing();
+                               }
+                       });
+               }
+       }
+
+       @Override
+       public Boolean canEdit() {
+               return canEdit;
+       }
+
+       public Boolean isEditing() {
+               try {
+                       if (!canEdit())
+                               return false;
+                       return versionManager.isCheckedOut(nodePath);
+               } catch (RepositoryException e) {
+                       throw new JcrException("Cannot check whether " + nodePath + " is editing", e);
+               }
+       }
+
+       @Override
+       public void startEditing() {
+               try {
+                       versionManager.checkout(nodePath);
+//                     setChanged();
+               } catch (RepositoryException e1) {
+                       throw new JcrException("Cannot publish " + nodePath, e1);
+               }
+               notifyListeners(new CmsEditionEvent(nodePath, CmsEditionEvent.START_EDITING, this));
+       }
+
+       @Override
+       public void stopEditing() {
+               try {
+                       versionManager.checkin(nodePath);
+//                     setChanged();
+               } catch (RepositoryException e1) {
+                       throw new JcrException("Cannot publish " + nodePath, e1);
+               }
+               notifyListeners(new CmsEditionEvent(nodePath, CmsEditionEvent.STOP_EDITING, this));
+       }
+
+}