/*
* Copyright (c) 2011 Google Inc.
*
* 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
*/
package com.google.eclipse.protobuf.ui.commands;
import static org.eclipse.xtext.ui.editor.utils.EditorUtils.getActiveXtextEditor;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.widgets.Control;
import org.eclipse.xtext.ui.editor.XtextEditor;
/**
* Base class for command handlers that insert content in an editor.
*
* @author alruiz@google.com (Alex Ruiz)
*/
public abstract class SmartInsertHandler extends AbstractHandler {
/** {@inheritDoc} */
@Override public final Object execute(ExecutionEvent event) {
XtextEditor activeEditor = getActiveXtextEditor();
if (activeEditor != null) {
insertContent(activeEditor, styledTextFrom(activeEditor));
}
return null;
}
private StyledText styledTextFrom(XtextEditor editor) {
Object adapter = editor.getAdapter(Control.class);
return (adapter instanceof StyledText) ? (StyledText) adapter : null;
}
protected abstract void insertContent(XtextEditor editor, StyledText styledText);
}