/*******************************************************************************
 * Copyright (c) 2010 BSI Business Systems Integration AG.
 * 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:
 *     BSI Business Systems Integration AG - initial API and implementation
 ******************************************************************************/
package org.eclipse.scout.sdk.ui.wizard.keystroke;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.scout.sdk.Texts;
import org.eclipse.scout.sdk.extensions.runtime.classes.IRuntimeClasses;
import org.eclipse.scout.sdk.extensions.runtime.classes.RuntimeClasses;
import org.eclipse.scout.sdk.operation.KeyStrokeNewOperation;
import org.eclipse.scout.sdk.ui.fields.StyledTextField;
import org.eclipse.scout.sdk.ui.fields.proposal.ContentProposalEvent;
import org.eclipse.scout.sdk.ui.fields.proposal.IProposalAdapterListener;
import org.eclipse.scout.sdk.ui.fields.proposal.ProposalTextField;
import org.eclipse.scout.sdk.ui.fields.proposal.javaelement.JavaElementAbstractTypeContentProvider;
import org.eclipse.scout.sdk.ui.internal.ScoutSdkUi;
import org.eclipse.scout.sdk.ui.wizard.AbstractWorkspaceWizardPage;
import org.eclipse.scout.sdk.util.ScoutUtility;
import org.eclipse.scout.sdk.util.SdkProperties;
import org.eclipse.scout.sdk.util.signature.SignatureCache;
import org.eclipse.scout.sdk.util.type.TypeUtility;
import org.eclipse.scout.sdk.util.typecache.IWorkingCopyManager;
import org.eclipse.scout.sdk.workspace.type.IStructuredType;
import org.eclipse.scout.sdk.workspace.type.ScoutTypeUtility;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;

/**
 * <h3> {@link KeyStrokeNewWizardPage}</h3> ...
 */
public class KeyStrokeNewWizardPage extends AbstractWorkspaceWizardPage {

  private final IType iKeyStroke = TypeUtility.getType(IRuntimeClasses.IKeyStroke);

  private String m_typeName;
  private IType m_superType;
  private String m_keyStroke;

  private StyledTextField m_typeNameField;
  private StyledTextField m_keyStrokeField;
  private ProposalTextField m_superTypeField;

  // process members
  private final IType m_declaringType;
  private IType m_createdKeystroke;
  private final IType m_abstractKeyStroke;

  public KeyStrokeNewWizardPage(IType declaringType) {
    super(KeyStrokeNewWizardPage.class.getName());
    setTitle(Texts.get("NewKeyStroke"));
    setDescription(Texts.get("CreateANewKeyStroke"));
    // default
    m_declaringType = declaringType;
    m_abstractKeyStroke = RuntimeClasses.getSuperType(IRuntimeClasses.IKeyStroke, m_declaringType.getJavaProject());
    m_superType = m_abstractKeyStroke;
  }

  @Override
  protected void createContent(Composite parent) {

    m_typeNameField = getFieldToolkit().createStyledTextField(parent, Texts.get("TypeName"));
    m_typeNameField.setReadOnlySuffix(SdkProperties.SUFFIX_KEY_STROKE);
    m_typeNameField.setText(m_typeName);
    m_typeNameField.addModifyListener(new ModifyListener() {
      @Override
      public void modifyText(ModifyEvent e) {
        m_typeName = m_typeNameField.getText();
        pingStateChanging();
      }
    });

    m_superTypeField = getFieldToolkit().createJavaElementProposalField(parent, Texts.get("SuperType"),
        new JavaElementAbstractTypeContentProvider(iKeyStroke, m_declaringType.getJavaProject(), m_abstractKeyStroke));
    m_superTypeField.acceptProposal(m_superType);
    m_superTypeField.addProposalAdapterListener(new IProposalAdapterListener() {
      @Override
      public void proposalAccepted(ContentProposalEvent event) {
        m_superType = (IType) event.proposal;
        pingStateChanging();
      }
    });

    m_keyStrokeField = getFieldToolkit().createStyledTextField(parent, Texts.get("KeyStroke"));
    m_keyStrokeField.setText(getKeyStroke());
    m_keyStrokeField.addModifyListener(new ModifyListener() {
      @Override
      public void modifyText(ModifyEvent e) {
        m_keyStroke = m_keyStrokeField.getText();
        pingStateChanging();
      }
    });

    // layout
    parent.setLayout(new GridLayout(1, true));

    m_typeNameField.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL));
    m_superTypeField.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL));
    m_keyStrokeField.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL));
  }

  @Override
  public boolean performFinish(IProgressMonitor monitor, IWorkingCopyManager workingCopyManager) throws CoreException {
    // write back members
    KeyStrokeNewOperation op = new KeyStrokeNewOperation(getTypeName(), getDeclaringType());
    IType superTypeProp = getSuperType();
    if (superTypeProp != null) {
      op.setSuperTypeSignature(SignatureCache.createTypeSignature(superTypeProp.getFullyQualifiedName()));
    }
    op.setKeyStroke(getKeyStroke());
    // sibling
    IStructuredType structuredType = ScoutTypeUtility.createStructuredForm(m_declaringType);
    op.setSibling(structuredType.getSiblingTypeKeyStroke(getTypeName()));
    op.run(monitor, workingCopyManager);
    m_createdKeystroke = op.getCreatedKeyStroke();
    return true;
  }

  @Override
  protected void validatePage(MultiStatus multiStatus) {
    try {
      multiStatus.add(getStatusNameField());
      multiStatus.add(getStatusSuperType());
    }
    catch (JavaModelException e) {
      ScoutSdkUi.logError("could not validate name field.", e);
    }
  }

  protected IStatus getStatusNameField() throws JavaModelException {
    IStatus javaFieldNameStatus = ScoutUtility.validateJavaName(getTypeName(), SdkProperties.SUFFIX_KEY_STROKE);
    if (javaFieldNameStatus.getSeverity() > IStatus.WARNING) {
      return javaFieldNameStatus;
    }
    if (TypeUtility.exists(getDeclaringType().getType(getTypeName()))) {
      return new Status(IStatus.ERROR, ScoutSdkUi.PLUGIN_ID, Texts.get("Error_nameAlreadyUsed"));
    }
    return javaFieldNameStatus;
  }

  protected IStatus getStatusSuperType() throws JavaModelException {
    if (getSuperType() == null) {
      return new Status(IStatus.ERROR, ScoutSdkUi.PLUGIN_ID, Texts.get("TheSuperTypeCanNotBeNull"));
    }
    return Status.OK_STATUS;
  }

  /**
   * @return the createdKeystroke
   */
  public IType getCreatedKeystroke() {
    return m_createdKeystroke;
  }

  public IType getDeclaringType() {
    return m_declaringType;
  }

  public String getTypeName() {
    return m_typeName;
  }

  public void setTypeName(String typeName) {
    try {
      setStateChanging(true);
      m_typeName = typeName;
      if (isControlCreated()) {
        m_typeNameField.setText(typeName);
      }
    }
    finally {
      setStateChanging(false);
    }
  }

  public IType getSuperType() {
    return m_superType;
  }

  public void setSuperType(IType superType) {
    try {
      setStateChanging(true);
      m_superType = superType;
      if (isControlCreated()) {
        m_superTypeField.acceptProposal(superType);
      }
    }
    finally {
      setStateChanging(false);
    }
  }

  public void setKeyStroke(String keyStroke) {
    try {
      setStateChanging(true);
      m_keyStroke = keyStroke;
      if (isControlCreated()) {
        m_keyStrokeField.setText(keyStroke);
      }
    }
    finally {
      setStateChanging(false);
    }
  }

  public String getKeyStroke() {
    return m_keyStroke;
  }
}