ComponentEditorMatchingStrategy.java

/*
 * ====================================================================
 * 
 * The ObjectStyle Group Software License, Version 1.0
 * 
 * Copyright (c) 2005 The ObjectStyle Group and individual authors of the
 * software. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met: 1.
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer. 2. Redistributions in
 * binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other
 * materials provided with the distribution. 3. The end-user documentation
 * included with the redistribution, if any, must include the following
 * acknowlegement: "This product includes software developed by the ObjectStyle
 * Group (http://objectstyle.org/)." Alternately, this acknowlegement may
 * appear in the software itself, if and wherever such third-party
 * acknowlegements normally appear. 4. The names "ObjectStyle Group" and
 * "Cayenne" must not be used to endorse or promote products derived from this
 * software without prior written permission. For written permission, please
 * contact andrus@objectstyle.org. 5. Products derived from this software may
 * not be called "ObjectStyle" nor may "ObjectStyle" appear in their names
 * without prior written permission of the ObjectStyle Group.
 * 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * OBJECTSTYLE GROUP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * ====================================================================
 * 
 * This software consists of voluntary contributions made by many individuals
 * on behalf of the ObjectStyle Group. For more information on the ObjectStyle
 * Group, please see <http://objectstyle.org/> .
 *  
 */
package org.objectstyle.wolips.componenteditor.launcher;

import org.eclipse.core.resources.IFile;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorMatchingStrategy;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.ide.ResourceUtil;
import org.eclipse.ui.part.FileEditorInput;
import org.objectstyle.wolips.componenteditor.part.ComponentEditor;
import org.objectstyle.wolips.components.input.ComponentEditorInput;
import org.objectstyle.wolips.editors.EditorsPlugin;

public class ComponentEditorMatchingStrategy implements IEditorMatchingStrategy {

	private boolean canHandleExtension(String extension) {
		if (!("wod".equalsIgnoreCase(extension) || "html".equalsIgnoreCase(extension) || "woo".equalsIgnoreCase(extension) || "api".equalsIgnoreCase(extension) || "tiff".equalsIgnoreCase(extension))) {
			return false;
		}
		return true;
	}

	public boolean matches(IEditorReference editorReference, IEditorInput editorInput) {
		String editorID = editorReference.getId();
		if (editorID == null) {
			return false;
		}
		if (!editorID.equals(EditorsPlugin.ComponentEditorID)) {
			return false;
		}
		if (editorInput instanceof ComponentEditorInput) {
			IWorkbenchPart workbenchPart = editorReference.getPart(true);
			if (workbenchPart == null) {
				return false;
			}
			ComponentEditor componentEditor = (ComponentEditor) workbenchPart;
			ComponentEditorInput componentEditorInput = componentEditor.getComponentEditorInput();
			return componentEditorInput.equals(editorInput);
		}
		if (!(editorInput instanceof FileEditorInput)) {
			return false;
		}
		IFile inputFile = ResourceUtil.getFile(editorInput);
		if (inputFile == null) {
			return false;
		}
		String extension = inputFile.getFileExtension();
		if (extension == null) {
			return false;
		}
		if (!this.canHandleExtension(extension)) {
			return false;
		}
		// IEditorInput editorReferenceEditorInput = null;
		// expensive: call it as late as possible
		IWorkbenchPart workbenchPart = editorReference.getPart(true);
		if (workbenchPart == null) {
			return false;
		}
		if (!(workbenchPart instanceof ComponentEditor)) {
			return false;
		}
		ComponentEditor componentEditor = (ComponentEditor) workbenchPart;
		ComponentEditorInput componentEditorInput = componentEditor.getComponentEditorInput();
		// if(editorReferenceEditorInput == null) {
		// return false;
		// }
		// if(!(editorReferenceEditorInput instanceof ComponentEditorInput)) {
		// return false;
		// }
		// ComponentEditorInput componentEditorInput =
		// (ComponentEditorInput)editorReferenceEditorInput;
		IEditorInput[] editorInputArray = componentEditorInput.getInput();
		for (int i = 0; i < editorInputArray.length; i++) {
			IFile inputFileFromEditor = ResourceUtil.getFile(editorInputArray[i]);
			if (inputFileFromEditor == null) {
				continue;
			}
			if (inputFileFromEditor.equals(inputFile)) {
				return true;
			}

		}
		return false;
	}

}