com.sap.dirigible.ide.repository.ui.command.OpenHandler.java Source code

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Here is the source code for com.sap.dirigible.ide.repository.ui.command.OpenHandler.java

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/*******************************************************************************
 * Copyright (c) 2014 SAP AG or an SAP affiliate company. All rights reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 *******************************************************************************/

package com.sap.dirigible.ide.repository.ui.command;

import java.io.IOException;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;

import com.sap.dirigible.ide.editor.text.input.ContentEditorInput;
import com.sap.dirigible.ide.logging.Logger;
import com.sap.dirigible.repository.api.IResource;

public class OpenHandler extends AbstractHandler {

    private static final String OPEN_FAILURE = Messages.OpenHandler_OPEN_FAILURE;

    private static final String COULD_NOT_OPEN_ONE_OR_MORE_FILES = Messages.OpenHandler_COULD_NOT_OPEN_ONE_OR_MORE_FILES;

    private static final Logger logger = Logger.getLogger(OpenHandler.class);

    public static final String TEXT_EDITOR_ID = "com.sap.dirigible.ide.editor.text.editor.ReadOnlyEditor"; //$NON-NLS-1$

    public Object execute(ExecutionEvent event) throws ExecutionException {
        boolean successful = true;
        ISelection selection = HandlerUtil.getCurrentSelection(event);
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection structuredSelection = (IStructuredSelection) selection;
            for (Object element : structuredSelection.toArray()) {
                successful &= openEditorFor(element);
            }
        }
        if (!successful) {
            logger.error(COULD_NOT_OPEN_ONE_OR_MORE_FILES);
            MessageDialog.openError(null, OPEN_FAILURE, COULD_NOT_OPEN_ONE_OR_MORE_FILES);
        }
        return null;
    }

    private static boolean openEditorFor(Object element) {
        if (element instanceof IResource) {
            return openEditorForResource((IResource) element);
        }
        return true;
    }

    private static boolean openEditorForResource(IResource file) {
        String editorId;// =
        // EditorUtil.getEditorIdForExtension(ContentTypeHelper.getExtension(file.getName()));
        // if (editorId == null) {
        editorId = TEXT_EDITOR_ID;
        // }
        IEditorInput input;
        try {
            input = new ContentEditorInput(file.getName(), file.getPath(), file.getContent());
            return openEditor(editorId, input);
        } catch (IOException e) {
            logger.error(e.getMessage(), e);
        }
        return false;
    }

    private static boolean openEditor(String id, IEditorInput input) {
        IWorkbench workbench = PlatformUI.getWorkbench();
        IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
        IWorkbenchPage page = window.getActivePage();
        try {
            page.openEditor(input, id);
            return true;
        } catch (PartInitException e) {
            logger.error(e.getMessage(), e);
            return false;
        }
    }

}