src/com/google/devrel/cluestick/studioclient/DynamicToolWindowWrapper.java

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * 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.google.devrel.cluestick.studioclient;

import com.appspot.cluestick_server.search.model.Result;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.components.ServiceManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.wm.ToolWindow;
import com.intellij.openapi.wm.ToolWindowAnchor;
import com.intellij.openapi.wm.ToolWindowManager;
import com.intellij.ui.content.Content;
import com.intellij.ui.content.ContentFactory;
import com.intellij.ui.content.ContentManager;

import java.util.List;

/**
 * Wrapper of {@link ToolWindow}, which contains a instance of {@link ToolWindow} and it can be
 * registered dynamically.
 * To show a ToolWindow from {@link AnAction#actionPerformed}, call like following:
 * <pre>
 *     @Override
 *     public void actionPerformed(AnActionEvent event) {
 *       Project project = getEventProject(event);
 *       DynamicToolWindowWrapper toolWindowWrapper = DynamicToolWindowWrapper.getInstance(project);
 *       ToolWindow toolWindow = toolWindowWrapper.getToolWindow();
 *       toolWindow.show((Runnable) null);
 *       .....
 *     }
 * </pre>
 */
public class DynamicToolWindowWrapper {
  private static final String TOOL_WINDOW_TAG = "Find Sample Code";
  private Project project;
  private ToolWindow toolWindow;

  public DynamicToolWindowWrapper(Project project) {
    this.project = project;
  }

  public static DynamicToolWindowWrapper getInstance(Project project) {
    return ServiceManager.getService(project, DynamicToolWindowWrapper.class);
  }

  public ToolWindow getToolWindow(Symbol symbol, List<Result> results) {
    if (toolWindow == null) {
      toolWindow = ToolWindowManager.getInstance(project).registerToolWindow(TOOL_WINDOW_TAG, true,
          ToolWindowAnchor.BOTTOM);
      toolWindow.setIcon(IconFetcher.GoogleDevelopers);
    }
    toolWindow.show(null);

    SearchResultsView view = new SearchResultsView(project, symbol, results);
    view.setClose(new Runnable() {
      @Override
      public void run() {
        toolWindow.hide(null);
      }
    });

    // nb. Title is intentionally blank, this allows only a single Find Samples window at once
    // (title dedups).
    String title = "";
    Content content = ContentFactory.SERVICE.getInstance().createContent(view, title, false);
    content.setDisposer(view);
    content.setShouldDisposeContent(false);  // prevent multiple dispose

    ContentManager contentManager = toolWindow.getContentManager();
    contentManager.removeAllContents(true);
    contentManager.addContent(content);
    contentManager.setSelectedContent(content);
    return toolWindow;
  }
}