com.sap.dirigible.ide.editor.text.command.TextEditorHandler.java Source code

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Here is the source code for com.sap.dirigible.ide.editor.text.command.TextEditorHandler.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.editor.text.command;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
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.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.part.FileEditorInput;

import com.sap.dirigible.ide.logging.Logger;

public class TextEditorHandler extends AbstractHandler {

    private static final String COULD_NOT_OPEN_EDITOR_FOR_SOME_OR_ALL_OF_THE_SELECTED_ITEMS = Messages.TextEditorHandler_COULD_NOT_OPEN_EDITOR_FOR_SOME_OR_ALL_OF_THE_SELECTED_ITEMS;

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

    private static final String EDITOR_ID = "com.sap.dirigible.ide.editor.text.editor.TextEditor"; //$NON-NLS-1$

    public Object execute(ExecutionEvent event) throws ExecutionException {
        ISelection selection = HandlerUtil.getCurrentSelection(event);
        IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event);
        if (selection instanceof IStructuredSelection && window != null) {
            execute(window.getActivePage(), (IStructuredSelection) selection);
        }
        return null;
    }

    protected String getEditorId() {
        return EDITOR_ID;
    }

    private void execute(IWorkbenchPage page, IStructuredSelection selection) {
        Throwable error = null;
        for (Object element : selection.toArray()) {
            if (element instanceof IFile) {
                try {
                    execute(page, (IFile) element);
                } catch (PartInitException ex) {
                    if (error == null) {
                        error = ex;
                    }
                }

            }
        }
        if (error != null) {
            logger.error(COULD_NOT_OPEN_EDITOR_FOR_SOME_OR_ALL_OF_THE_SELECTED_ITEMS, error);
            MessageDialog.openError(null, Messages.TextEditorHandler_OPERATION_ERROR,
                    COULD_NOT_OPEN_EDITOR_FOR_SOME_OR_ALL_OF_THE_SELECTED_ITEMS);
        }

    }

    private void execute(IWorkbenchPage page, IFile file) throws PartInitException {
        IEditorInput input = new FileEditorInput(file);
        page.openEditor(input, getEditorId());
    }

}