Bug 386349 - Support adding TransferDropTargetListener to Web Page
Editor's Outline view
diff --git a/jsf/plugins/org.eclipse.jst.pagedesigner/schema/pageDesignerExtension.exsd b/jsf/plugins/org.eclipse.jst.pagedesigner/schema/pageDesignerExtension.exsd
index 4cc47e2..588fbf6 100644
--- a/jsf/plugins/org.eclipse.jst.pagedesigner/schema/pageDesignerExtension.exsd
+++ b/jsf/plugins/org.eclipse.jst.pagedesigner/schema/pageDesignerExtension.exsd
@@ -30,6 +30,7 @@
<element ref="paletteFactory" minOccurs="0" maxOccurs="unbounded"/>
<element ref="attributeValueResolver" minOccurs="0" maxOccurs="unbounded"/>
<element ref="elValueResolver" minOccurs="0" maxOccurs="unbounded"/>
+ <element ref="outlineTargetListener" minOccurs="0" maxOccurs="unbounded"/>
</sequence>
<attribute name="point" type="string" use="required">
<annotation>
@@ -281,6 +282,21 @@
</complexType>
</element>
+ <element name="outlineTargetListener">
+ <complexType>
+ <attribute name="class" type="string" use="required">
+ <annotation>
+ <documentation>
+ Provide a TransferDropTargetListener implementation for each Transfer type to be supported in the Outline view. The TransferDropTargetListener implementation must provide a no-arg constructor.
+ </documentation>
+ <appInfo>
+ <meta.attribute kind="java" basedOn=":org.eclipse.jface.util.TransferDropTargetListener"/>
+ </appInfo>
+ </annotation>
+ </attribute>
+ </complexType>
+ </element>
+
<annotation>
<appInfo>
<meta.section type="since"/>
diff --git a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/IJMTConstants.java b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/IJMTConstants.java
index 7dbd5b8..9575b7b 100644
--- a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/IJMTConstants.java
+++ b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/IJMTConstants.java
@@ -96,6 +96,11 @@
public static final String ELEMENT_EDIT_FACTORY = "elementEditFactory"; //$NON-NLS-1$
/**
+ * local name of outline target listener extension
+ */
+ public static final String OUTLINE_TARGET_LISTENER = "outlineTargetListener"; //$NON-NLS-1$
+
+ /**
* local name of link creator extension
*/
public static final String LINK_CREATOR = "linkCreator"; //$NON-NLS-1$
diff --git a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/editors/OutlineConfiguration.java b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/editors/OutlineConfiguration.java
index d35de2d..07cf30c 100644
--- a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/editors/OutlineConfiguration.java
+++ b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/editors/OutlineConfiguration.java
@@ -15,6 +15,7 @@
import java.util.List;
import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.util.TransferDropTargetListener;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
@@ -78,4 +79,39 @@
}
return selectedStructures;
}
+
+ @Override
+ public TransferDropTargetListener[] getTransferDropTargetListeners(
+ TreeViewer treeViewer)
+ {
+ TransferDropTargetListener[] originalListeners =
+ super.getTransferDropTargetListeners(treeViewer);
+
+ List<TransferDropTargetListener> configuredListeners =
+ getConfiguredTransferDropTargetListeners();
+
+ TransferDropTargetListener[] consolidated =
+ new TransferDropTargetListener[originalListeners.length + configuredListeners.size()];
+
+ int i = 0;
+ // Put the configured listeners ahead of the original,
+ // which just allows reordering of the nodes/tags;
+ // otherwise, the LocalSelectionTransfer (for reordering)
+ // takes precedence over a ResourceTransfer.
+ for (TransferDropTargetListener configured : configuredListeners)
+ {
+ consolidated[i++] = configured;
+ }
+ for (TransferDropTargetListener original : originalListeners)
+ {
+ consolidated[i++] = original;
+ }
+
+ return consolidated;
+ }
+
+ private List<TransferDropTargetListener> getConfiguredTransferDropTargetListeners()
+ {
+ return OutlineTargetListenerReader.getListeners();
+ }
}
diff --git a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/editors/OutlineTargetListenerReader.java b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/editors/OutlineTargetListenerReader.java
new file mode 100644
index 0000000..a5b8e1c
--- /dev/null
+++ b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/editors/OutlineTargetListenerReader.java
@@ -0,0 +1,78 @@
+package org.eclipse.jst.pagedesigner.editors;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.IExtension;
+import org.eclipse.core.runtime.IExtensionPoint;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.jface.util.TransferDropTargetListener;
+import org.eclipse.jst.pagedesigner.IJMTConstants;
+import org.eclipse.jst.pagedesigner.PDPlugin;
+
+class OutlineTargetListenerReader
+{
+ private final static String CLASS = "class"; //$NON-NLS-1$
+
+ private static List<TransferDropTargetListener> _listeners;
+
+ public static synchronized List<TransferDropTargetListener> getListeners()
+ {
+ if (_listeners == null)
+ {
+ _listeners = readListeners();
+ }
+ return Collections.unmodifiableList(_listeners);
+ }
+
+ private static List<TransferDropTargetListener> readListeners()
+ {
+ List<TransferDropTargetListener> listeners = new ArrayList<TransferDropTargetListener>();
+
+ IExtensionPoint extensionPoint =
+ Platform.getExtensionRegistry()
+ .getExtensionPoint(PDPlugin.getPluginId(),
+ IJMTConstants.EXTENSION_POINT_PAGEDESIGNER);
+ IExtension[] extensions = extensionPoint.getExtensions();
+
+ for (int i=0; i<extensions.length; i++)
+ {
+ IExtension ext = extensions[i];
+ IConfigurationElement[] pageDesignerElements = ext.getConfigurationElements();
+
+ for (int j=0; j<pageDesignerElements.length; j++)
+ {
+ final IConfigurationElement pageDesignerElement = pageDesignerElements[j];
+ if (pageDesignerElement.getName().equals(IJMTConstants.OUTLINE_TARGET_LISTENER))
+ {
+ pageDesignerElement.getAttribute(CLASS);
+ Object object;
+ try
+ {
+ object = pageDesignerElement.createExecutableExtension(CLASS);
+ if (object instanceof TransferDropTargetListener)
+
+ {
+ listeners.add((TransferDropTargetListener)object);
+ }
+ }
+ catch (CoreException e)
+ {
+ PDPlugin.log("Problem loading transfer drop target listener for " + //$NON-NLS-1$
+ pageDesignerElement, e);
+ }
+ }
+ }
+ }
+ return listeners;
+ }
+
+ private OutlineTargetListenerReader()
+ {
+ throw new IllegalStateException("Should not be instantiated!"); //$NON-NLS-1$
+ }
+
+}
