merge-update from trunk

[taxeditor.git] / eu.etaxonomy.taxeditor.store / src / main / java / eu / etaxonomy / taxeditor / view / AbstractCdmEditorViewPart.java

diff --git a/eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/view/AbstractCdmEditorViewPart.java b/eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/view/AbstractCdmEditorViewPart.java
index 1240b09f8f7cb551cb04845f33f27a961b4a54b5..67a0bae278427199ca11a16728dd6b9f0a7db64d 100644 (file)
--- a/eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/view/AbstractCdmEditorViewPart.java
+++ b/eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/view/AbstractCdmEditorViewPart.java
@@ -1,16 +1,22 @@
 /**
- * 
+ *
  */
 package eu.etaxonomy.taxeditor.view;
 
+import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
 import org.eclipse.ui.IEditorPart;
+import org.eclipse.ui.IWorkbenchPart;
 
+import eu.etaxonomy.taxeditor.editor.ISecuredEditor;
+import eu.etaxonomy.taxeditor.model.AbstractUtility;
 import eu.etaxonomy.taxeditor.model.IDirtyMarkableSelectionProvider;
-import eu.etaxonomy.taxeditor.store.StoreUtil;
 
 /**
- * <p>Abstract AbstractCdmEditorViewPart class.</p>
+ * <p>
+ * Abstract AbstractCdmEditorViewPart class.
+ * </p>
  *
  * @author n.hoffmann
  * @created Sep 21, 2010
@@ -18,41 +24,116 @@ import eu.etaxonomy.taxeditor.store.StoreUtil;
  */
 public abstract class AbstractCdmEditorViewPart extends AbstractCdmViewPart {
 
-       /* (non-Javadoc)
-        * @see eu.etaxonomy.taxeditor.model.AbstractCdmViewPart#createPartControl(org.eclipse.swt.widgets.Composite)
-        */
-       /** {@inheritDoc} */
-       @Override
-       public void createPartControl(Composite parent) {
-       
-               super.createPartControl(parent);
-               
-               // show viewer if there is an open editor
-//             if(getEditor() != null){
-//                     showViewer(getEditor(), new StructuredSelection(getInitialInput()));
-//             }
-       }
-               
-       /**
-        * <p>getEditor</p>
-        *
-        * @return the currently active editor
-        */
-       public IEditorPart getEditor(){
-               return StoreUtil.getActiveEditor();
-       }
-       
-       /** {@inheritDoc} */
-       public void changed(Object object){
-               if(part instanceof AbstractCdmViewPart){
-                       ((AbstractCdmViewPart) part).changed(object);
-               }else{
-                       if(getEditor() != null && getEditor() instanceof IDirtyMarkableSelectionProvider){
-                       
-                               ((IDirtyMarkableSelectionProvider) getEditor()).changed(object);
-                               
-                       }
-               }
-       }
+    private DelaySelection delaySelection = null;
+    /**
+     * This is the monitor for the DelaySelection runnable.
+     * If it is <code>true</code> then it is currently delaying a selection.
+     */
+    private boolean isInDelay = false;
+
+
+    /**
+     * This class invokes internal_selectionChanged() in a separate thread.
+     * This allows an asynchronous and/or delayed handling of selection changes
+     */
+    private class DelaySelection implements Runnable{
+        private IWorkbenchPart part;
+        private ISelection selection;
+
+        public DelaySelection(IWorkbenchPart part, ISelection selection) {
+            super();
+            this.part = part;
+            this.selection = selection;
+        }
+
+        /* (non-Javadoc)
+         * @see java.lang.Runnable#run()
+         */
+        @Override
+        public void run() {
+            internal_selectionChanged(part, selection);
+            isInDelay = false;
+        }
+
+        public synchronized void setSelection(ISelection selection) {
+            this.selection = selection;
+        }
+
+        public synchronized void setPart(IWorkbenchPart part) {
+            this.part = part;
+        }
+
+    }
+
+    /**
+     * Handle selection change events here and <b>not</b> in
+     * {@link AbstractCdmEditorViewPart#selectionChanged(IWorkbenchPart, ISelection)}
+     * if you want asynchronous selection handling.
+     * @param part The workbench part that has issued the selection change
+     * @param selection the new selection
+     */
+    protected abstract void internal_selectionChanged(IWorkbenchPart part, ISelection selection);
+
+    /** {@inheritDoc} */
+    @Override
+    public void selectionChanged(IWorkbenchPart part, ISelection selection) {
+        if(delaySelection==null){
+            delaySelection = new DelaySelection(part, selection);
+        }
+        delaySelection.setPart(part);
+        delaySelection.setSelection(selection);
+        if(!isInDelay){
+            isInDelay = true;
+            Display.getCurrent().asyncExec(delaySelection);
+        }
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see
+     * eu.etaxonomy.taxeditor.model.AbstractCdmViewPart#createPartControl(org
+     * .eclipse.swt.widgets.Composite)
+     */
+    /** {@inheritDoc} */
+    @Override
+    public void createPartControl(Composite parent) {
+        super.createPartControl(parent);
+    }
+
+    /**
+     * <p>
+     * getEditor
+     * </p>
+     *
+     * @return the currently active editor
+     */
+    public IEditorPart getEditor() {
+        return AbstractUtility.getActiveEditor();
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void setFocus() {
+        super.setFocus();
+
+        if(getEditor() != null && ISecuredEditor.class.isAssignableFrom(getEditor().getClass())){
+            boolean doEnable = ((ISecuredEditor)getEditor()).permissionsSatisfied();
+            setEnabled(doEnable);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void changed(Object object) {
+        if (part instanceof AbstractCdmViewPart) {
+            ((AbstractCdmViewPart) part).changed(object);
+        } else {
+            IEditorPart editor = getEditor();
+            if (editor != null && editor instanceof IDirtyMarkableSelectionProvider) {
+                ((IDirtyMarkableSelectionProvider) editor).changed(object);
+            }
+        }
+    }
 
 }