Package org.springframework.ide.eclipse.wizard.actions

Source Code of org.springframework.ide.eclipse.wizard.actions.ModifyBeanDefAction

/*******************************************************************************
*  Copyright (c) 2012 VMware, 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
*
*  Contributors:
*      VMware, Inc. - initial API and implementation
*******************************************************************************/
package org.springframework.ide.eclipse.wizard.actions;

import java.io.IOException;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.TreeSelection;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IModelManager;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
import org.eclipse.wst.xml.core.internal.document.DOMModelImpl;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;
import org.springframework.ide.eclipse.beans.core.model.IBean;
import org.springframework.ide.eclipse.beans.ui.editor.util.BeansEditorUtils;
import org.springframework.ide.eclipse.config.core.schemas.BeansSchemaConstants;
import org.springframework.ide.eclipse.wizard.WizardPlugin;
import org.springframework.ide.eclipse.wizard.ui.BeanWizardDialog;
import org.springsource.ide.eclipse.commons.core.StatusHandler;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;


/**
* Action for modifying bean definition
* @author Terry Denney
* @author Leo Dos Santos
* @author Christian Dupuis
* @since 2.0
*/
@SuppressWarnings("restriction")
public class ModifyBeanDefAction extends Action implements IObjectActionDelegate {

  private IDOMElement selectedBean;

  private IFile selectedFile;

  private boolean matchAndSelect(String beanValue, String attributeName, NamedNodeMap attributes, Node beanNode) {
    Node attributeNode = attributes.getNamedItem(attributeName);
    if (attributeNode == null) {
      return false;
    }

    if (beanValue != null && beanValue.equals(attributeNode.getNodeValue())) {
      if (beanNode instanceof IDOMElement) {
        selectedBean = (IDOMElement) beanNode;
      }
    }
    return true;
  }

  @Override
  public void run() {
    Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
    if (shell != null && !shell.isDisposed()) {
      if (selectedBean != null && selectedFile != null) {
        BeanWizardDialog dialog = BeanWizardDialog.createModifyBeanWizardDialog(shell, selectedFile,
            selectedBean);
        dialog.create();
        dialog.setBlockOnOpen(true);
        dialog.open();
      }
      else {
        MessageDialog.openError(shell, "Cannot Modify Bean", "Selection does not contain an editable bean.");
      }
    }
  }

  public void run(IAction action) {
    run();
  }

  public void selectionChanged(IAction action, ISelection selection) {
    selectedBean = null;
    selectedFile = null;

    if (selection instanceof TreeSelection) {
      TreeSelection treeSelection = (TreeSelection) selection;
      Object[] objects = treeSelection.toArray();
      if (objects != null && objects.length == 1) {
        if (objects[0] instanceof IBean) {
          IBean bean = (IBean) objects[0];
          IResource resource = bean.getElementResource();
          if (resource instanceof IFile) {
            selectedFile = (IFile) resource;
            int startLine = bean.getElementStartLine() - 1;
            int endLine = bean.getElementEndLine();

            IModelManager modelManager = StructuredModelManager.getModelManager();
            DOMModelImpl modelForRead = null;
            try {
              modelForRead = (DOMModelImpl) modelManager.getModelForRead(selectedFile);
              IStructuredDocument document = modelForRead.getStructuredDocument();
              int startOffset = document.getLineOffset(startLine);
              int endOffset = document.getLineOffset(endLine);

              if (startOffset == endOffset) {
                endOffset = document.getLength();
              }

              for (int i = startOffset; i < endOffset; i++) {
                Node node = BeansEditorUtils.getNodeByOffset(document, i);
                String localName = node.getLocalName();
                if (localName != null && localName.equals(BeansSchemaConstants.ELEM_BEAN)) {
                  NamedNodeMap attributes = node.getAttributes();

                  String beanName = bean.getElementName();
                  boolean matched = matchAndSelect(beanName, BeansSchemaConstants.ATTR_ID,
                      attributes, node);

                  if (selectedBean != null) {
                    return;
                  }

                  if (!matched) {
                    String className = bean.getClassName();
                    matchAndSelect(className, BeansSchemaConstants.ATTR_CLASS, attributes, node);

                    if (selectedBean != null) {
                      return;
                    }
                  }
                }
              }
            }
            catch (IOException e) {
              StatusHandler.log(new Status(IStatus.ERROR, WizardPlugin.PLUGIN_ID,
                  "Failed to get XML node from bean selection.", e));
            }
            catch (CoreException e) {
              StatusHandler.log(new Status(IStatus.ERROR, WizardPlugin.PLUGIN_ID,
                  "Failed to get XML node from bean selection.", e));
            }
            catch (BadLocationException e) {
              StatusHandler.log(new Status(IStatus.ERROR, WizardPlugin.PLUGIN_ID,
                  "Failed to get XML node from bean selection.", e));
            }
            finally {
              if (modelForRead != null) {
                modelForRead.releaseFromRead();
                modelForRead = null;
              }
            }
          }
        }
      }
    }

    selectedFile = null;
    selectedBean = null;
  }

  public void setActivePart(IAction action, IWorkbenchPart targetPart) {
  }

}
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