org.eclipse.virgo.ide.ui/src/org/eclipse/virgo/ide/ui/editors/PdeCompatibilityUtil.java

/*********************************************************************
 * Copyright (c) 2009, 2012 SpringSource, a division of VMware, Inc.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
**********************************************************************/

package org.eclipse.virgo.ide.ui.editors;

import java.io.File;
import java.lang.reflect.Constructor;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IURIEditorInput;
import org.eclipse.ui.statushandlers.StatusManager;
import org.eclipse.virgo.ide.ui.ServerIdeUiPlugin;

/**
 * @author Steffen Pingel
 */
class PdeCompatibilityUtil {

    private static boolean isEclipse34 = true;

    public static boolean isSystemFileEditorInput(IEditorInput input) {
        if (isEclipse34) {
            Class<?> systemFileEditorInputClass;
            try {
                systemFileEditorInputClass = Class.forName("org.eclipse.pde.internal.ui.editor.SystemFileEditorInput");
                return systemFileEditorInputClass.isInstance(input);
            } catch (ClassNotFoundException e) {
                isEclipse34 = false;
            } catch (Throwable e) {
                StatusManager.getManager().handle(
                    new Status(IStatus.ERROR, ServerIdeUiPlugin.PLUGIN_ID, "Failed to check for instance of SystemFileEditorInput"));
                isEclipse34 = false;
            }
        }
        return false;
    }

    public static IEditorInput createSystemFileEditorInput(IURIEditorInput input) {
        return createSystemFileEditorInput(new File(input.getURI()));
    }

    public static IEditorInput createSystemFileEditorInput(File file) {
        if (isEclipse34) {
            Class<?> systemFileEditorInputClass;
            try {
                systemFileEditorInputClass = Class.forName("org.eclipse.pde.internal.ui.editor.SystemFileEditorInput");
                Constructor<?> constructor = systemFileEditorInputClass.getConstructor(File.class);
                return (IEditorInput) constructor.newInstance(file);
            } catch (ClassNotFoundException e) {
                isEclipse34 = false;
            } catch (Throwable e) {
                StatusManager.getManager().handle(
                    new Status(IStatus.ERROR, ServerIdeUiPlugin.PLUGIN_ID, "Failed to create instance of SystemFileEditorInput"));
                isEclipse34 = false;
            }
        }
        return null;
    }

}