plugins/ui-designer/src/com/intellij/uiDesigner/palette/EditComponentAction.java

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * 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.intellij.uiDesigner.palette;

import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.actionSystem.PlatformDataKeys;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.wm.WindowManager;
import com.intellij.uiDesigner.UIDesignerBundle;

import java.awt.*;

/**
 * @author yole
 */
public class EditComponentAction extends AnAction {
  private static final Logger LOG = Logger.getInstance("#com.intellij.uiDesigner.palette.EditComponentAction");

  public void actionPerformed(AnActionEvent e) {
    Project project = e.getData(CommonDataKeys.PROJECT);
    ComponentItem selectedItem = e.getData(ComponentItem.DATA_KEY);
    if (project == null || selectedItem == null || selectedItem.isAnyComponent() || selectedItem.isSpacer()) {
      return;
    }

    final ComponentItem itemToBeEdited = selectedItem.clone(); /*"Cancel" should work, so we need edit copy*/
    Window parentWindow = WindowManager.getInstance().suggestParentWindow(project);
    final ComponentItemDialog dialog = new ComponentItemDialog(project, parentWindow, itemToBeEdited, false);
    dialog.setTitle(UIDesignerBundle.message("title.edit.component"));
    dialog.show();
    if(!dialog.isOK()) {
      return;
    }

    GroupItem groupItem = null;
    Palette palette = Palette.getInstance(project);
    // If the itemToBeAdded is already in palette do nothing
    for(GroupItem group: palette.getGroups()) {
      if (group.containsItemCopy(selectedItem, itemToBeEdited.getClassName())){
        return;
      }
      if (group.containsItemClass(selectedItem.getClassName())) {
        groupItem = group;
      }
    }
    LOG.assertTrue(groupItem != null);        

    palette.replaceItem(groupItem, selectedItem, itemToBeEdited);
    palette.fireGroupsChanged();
  }

  @Override public void update(AnActionEvent e) {
    Project project = e.getData(CommonDataKeys.PROJECT);
    ComponentItem selectedItem = e.getData(ComponentItem.DATA_KEY);
    GroupItem groupItem = e.getData(GroupItem.DATA_KEY);
    e.getPresentation().setEnabled(project != null &&
                                   selectedItem != null &&
                                   groupItem != null &&
                                   !selectedItem.isAnyComponent() &&
                                   !selectedItem.isSpacer());
  }
}