1 files changed, 139 insertions, 0 deletions
diff --git a/core/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/EncodingSupport.java b/core/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/EncodingSupport.java
new file mode 100644
index 0000000000..fd054ef577
--- /dev/null
+++ b/core/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/EncodingSupport.java
@@ -0,0 +1,139 @@
+/*******************************************************************************
+ * Copyright (c) 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.wst.sse.ui;
+
+import org.eclipse.ui.editors.text.DefaultEncodingSupport;
+import org.eclipse.ui.editors.text.IEncodingSupport;
+import org.eclipse.ui.texteditor.StatusTextEditor;
+import org.eclipse.wst.sse.ui.internal.ExtendedConfigurationBuilder;
+
+/**
+ * An implementation that will try to use a <b>provisional</b> configuration
+ * if IEncodingSupport.class as a delegate. A delegate, if found, will be
+ * asked for encoding information before defaulting to the superclass
+ * implementation, but will be told to set the encoding after the superclass
+ * has. Delegates should not duplicate any functionality in the
+ * DefaultEncodingSupport implementation as they may be executed in addition
+ * to the default behavior.
+ */
+class EncodingSupport extends DefaultEncodingSupport {
+	private String[] fConfigurationPoints = null;
+	/** The editor this support is associated with. */
+	private StatusTextEditor fStatusTextEditor;
+
+	IEncodingSupport fSupportDelegate = null;
+
+	EncodingSupport(String[] configurationPoints) {
+		super();
+		fConfigurationPoints = configurationPoints;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.ui.editors.text.DefaultEncodingSupport#dispose()
+	 */
+	public void dispose() {
+		super.dispose();
+
+		if (fSupportDelegate instanceof DefaultEncodingSupport) {
+			((DefaultEncodingSupport) fSupportDelegate).dispose();
+		}
+		fSupportDelegate = null;
+		fStatusTextEditor = null;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @seeorg.eclipse.ui.editors.text.DefaultEncodingSupport#
+	 * getDefaultEncoding()
+	 */
+	public String getDefaultEncoding() {
+		IEncodingSupport delegate = getEncodingSupportDelegate();
+		if (delegate != null) {
+			return delegate.getDefaultEncoding();
+		}
+
+		return super.getDefaultEncoding();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.ui.editors.text.DefaultEncodingSupport#getEncoding ()
+	 */
+	public String getEncoding() {
+		IEncodingSupport delegate = getEncodingSupportDelegate();
+		if (delegate != null) {
+			return delegate.getEncoding();
+		}
+
+		return super.getEncoding();
+	}
+
+	IEncodingSupport getEncodingSupportDelegate() {
+		if (fSupportDelegate == null) {
+			ExtendedConfigurationBuilder builder = ExtendedConfigurationBuilder.getInstance();
+			for (int i = 0; fSupportDelegate == null && i < fConfigurationPoints.length; i++) {
+				fSupportDelegate = (IEncodingSupport) builder.getConfiguration(IEncodingSupport.class.getName(), fConfigurationPoints[i]);
+			}
+		}
+		return fSupportDelegate;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see
+	 * org.eclipse.ui.editors.text.DefaultEncodingSupport#initialize(org.eclipse
+	 * .ui.texteditor.StatusTextEditor)
+	 */
+	public void initialize(StatusTextEditor textEditor) {
+		super.initialize(textEditor);
+		fStatusTextEditor = textEditor;
+
+		IEncodingSupport encodingSupportDelegate = getEncodingSupportDelegate();
+		if (encodingSupportDelegate instanceof DefaultEncodingSupport) {
+			((DefaultEncodingSupport) encodingSupportDelegate).initialize(textEditor);
+		}
+	}
+
+	void reinitialize(String[] configurationPoints) {
+		if (fSupportDelegate instanceof DefaultEncodingSupport) {
+			((DefaultEncodingSupport) fSupportDelegate).dispose();
+		}
+		fSupportDelegate = null;
+
+		fConfigurationPoints = configurationPoints;
+
+		IEncodingSupport encodingSupportDelegate = getEncodingSupportDelegate();
+		if (encodingSupportDelegate instanceof DefaultEncodingSupport) {
+			((DefaultEncodingSupport) encodingSupportDelegate).initialize(fStatusTextEditor);
+		}
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.ui.editors.text.DefaultEncodingSupport#setEncoding
+	 * (java.lang.String, boolean)
+	 */
+	protected void setEncoding(String encoding, boolean overwrite) {
+		super.setEncoding(encoding, overwrite);
+
+		IEncodingSupport delegate = getEncodingSupportDelegate();
+		if (delegate != null && overwrite) {
+			delegate.setEncoding(encoding);
+		}
+	}
+}