java/idea-ui/src/com/intellij/facet/impl/ui/facetType/FacetTypeEditor.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.facet.impl.ui.facetType;

import com.intellij.facet.Facet;
import com.intellij.facet.FacetConfiguration;
import com.intellij.facet.FacetType;
import com.intellij.facet.ProjectFacetManager;
import com.intellij.facet.impl.ProjectFacetsConfigurator;
import com.intellij.facet.impl.invalid.InvalidFacetType;
import com.intellij.facet.ui.DefaultFacetSettingsEditor;
import com.intellij.facet.ui.FacetEditor;
import com.intellij.facet.ui.MultipleFacetSettingsEditor;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.options.Configurable;
import com.intellij.openapi.options.ConfigurationException;
import com.intellij.openapi.options.UnnamedConfigurableGroup;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.project.ProjectBundle;
import com.intellij.openapi.roots.ui.configuration.projectRoot.StructureConfigurableContext;
import com.intellij.openapi.util.Disposer;
import com.intellij.ui.TabbedPaneWrapper;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.util.ArrayList;
import java.util.List;

/**
 * @author nik
 */
public class FacetTypeEditor extends UnnamedConfigurableGroup {
  private final Project myProject;
  private final StructureConfigurableContext myContext;
  private final FacetType<?, ?> myFacetType;
  private Configurable myDefaultSettingsConfigurable;
  private MultipleFacetSettingsEditor myAllFacetsEditor;
  private List<Configurable> myCurrentConfigurables;
  private TabbedPaneWrapper myTabbedPane;
  private final Disposable myDisposable = Disposer.newDisposable();

  public <C extends FacetConfiguration> FacetTypeEditor(@NotNull Project project, final StructureConfigurableContext context, @NotNull FacetType<?, C> facetType) {
    myProject = project;
    myContext = context;
    myFacetType = facetType;

    if (!(facetType instanceof InvalidFacetType)) {
      C configuration = ProjectFacetManager.getInstance(project).createDefaultConfiguration(facetType);
      DefaultFacetSettingsEditor defaultSettingsEditor = facetType.createDefaultConfigurationEditor(project, configuration);
      if (defaultSettingsEditor != null) {
        myDefaultSettingsConfigurable = new DefaultFacetSettingsConfigurable<C>(facetType, project, defaultSettingsEditor, configuration);
        add(myDefaultSettingsConfigurable);
      }
    }
  }

  public boolean isVisible() {
    return myDefaultSettingsConfigurable != null || myAllFacetsEditor != null;
  }

  @Nullable
  private MultipleFacetSettingsEditor createAllFacetsEditor() {
    ProjectFacetsConfigurator facetsConfigurator = myContext.myModulesConfigurator.getFacetsConfigurator();
    List<Facet> facets = new ArrayList<Facet>();
    for (Module module : myContext.getModules()) {
      facets.addAll(facetsConfigurator.getFacetsByType(module, myFacetType.getId()));
    }
    if (!facets.isEmpty()) {
      final FacetEditor[] editors = new FacetEditor[facets.size()];
      for (int i = 0; i < facets.size(); i++) {
        editors[i] = facetsConfigurator.getOrCreateEditor(facets.get(i));
      }
      return myFacetType.createMultipleConfigurationsEditor(myProject, editors);
    }
    return null;
  }

  @Override
  public void disposeUIResources() {
    Disposer.dispose(myDisposable);
    super.disposeUIResources();
  }

  public JComponent createComponent() {
    MultipleFacetSettingsEditor allFacetsEditor = createAllFacetsEditor();
    if (myAllFacetsEditor != null) {
      myAllFacetsEditor.disposeUIResources();
    }
    myAllFacetsEditor = allFacetsEditor;

    myCurrentConfigurables = new ArrayList<Configurable>();
    if (myDefaultSettingsConfigurable != null) {
      myCurrentConfigurables.add(myDefaultSettingsConfigurable);
    }

    if (myAllFacetsEditor != null) {
      myCurrentConfigurables.add(new AllFacetsConfigurable(myAllFacetsEditor));
    }

    if (myCurrentConfigurables.isEmpty()) {
      return new JPanel();
    }
    if (myCurrentConfigurables.size() == 1) {
      return myCurrentConfigurables.get(0).createComponent();
    }

    myTabbedPane = new TabbedPaneWrapper(myDisposable);
    for (Configurable configurable : myCurrentConfigurables) {
      myTabbedPane.addTab(configurable.getDisplayName(), configurable.createComponent());
    }
    return myTabbedPane.getComponent();
  }

  @Nullable
  public String getHelpTopic() {
    int selectedTab = myTabbedPane != null ? myTabbedPane.getSelectedIndex() : 0;
    if (myCurrentConfigurables != null && 0 <= selectedTab && selectedTab < myCurrentConfigurables.size()) {
      return myCurrentConfigurables.get(selectedTab).getHelpTopic();
    }
    return null;
  }

  private static class AllFacetsConfigurable implements Configurable {
    private final MultipleFacetSettingsEditor myEditor;

    public AllFacetsConfigurable(final MultipleFacetSettingsEditor editor) {
      myEditor = editor;
    }

    public String getDisplayName() {
      return ProjectBundle.message("tab.name.all.facets");
    }

    public String getHelpTopic() {
      return myEditor.getHelpTopic();
    }

    public JComponent createComponent() {
      return myEditor.createComponent();
    }

    public boolean isModified() {
      return false;
    }

    public void apply() throws ConfigurationException {
    }

    public void reset() {
    }

    public void disposeUIResources() {
      myEditor.disposeUIResources();
    }
  }
}