NodeOpener_RequestHandler.java

package jetbrains.mps.ide.httpsupport.nodeaccess.plugin;

/*Generated by MPS */

import jetbrains.mps.ide.httpsupport.runtime.base.HttpRequestHandlerBase;
import java.util.List;
import jetbrains.mps.internal.collections.runtime.ListSequence;
import java.util.ArrayList;
import org.jetbrains.mps.openapi.model.SNodeReference;
import jetbrains.mps.project.Project;
import jetbrains.mps.ide.httpsupport.manager.plugin.HttpRequest;
import org.jetbrains.mps.openapi.persistence.PersistenceFacade;
import jetbrains.mps.ide.httpsupport.runtime.base.HttpSupportUtil;
import jetbrains.mps.project.ProjectManager;
import org.jetbrains.mps.openapi.model.SNode;
import jetbrains.mps.baseLanguage.closures.runtime.Wrappers;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.buffer.Unpooled;
import io.netty.util.CharsetUtil;

public class NodeOpener_RequestHandler extends HttpRequestHandlerBase {

  private static final List<String> QUERY_PREFIX = ListSequence.fromListAndArray(new ArrayList<String>(), "node");

  private final boolean myCorrectRequest;
  private final SNodeReference ref;
  private final Project project;

  public NodeOpener_RequestHandler(HttpRequest request) {
    super(request);
    boolean correctRequest = true;
    {
      String ref_serialized = ListSequence.fromList(this.request.getParameterValue("ref")).getElement(0);
      if (ref_serialized != null) {
        this.ref = PersistenceFacade.getInstance().createNodeReference(ref_serialized);
      } else {
        correctRequest = false;
        this.ref = null;
      }
    }
    {
      String project_serialized = ListSequence.fromList(this.request.getParameterValue("project")).getElement(0);
      if (project_serialized != null) {
        this.project = HttpSupportUtil.getProjectByName(project_serialized);
      } else {
        this.project = ProjectManager.getInstance().getOpenedProjects().get(0);
      }
    }
    myCorrectRequest = correctRequest;
  }


  @Override
  protected List<String> getQueryPrefix() {
    return QUERY_PREFIX;
  }


  @Override
  public boolean canHandle() {
    if (!(myCorrectRequest) || !(super.canHandle())) {
      return false;
    }

    return true;
  }

  @Override
  public void handle() throws Exception {
    if (this.project != null) {
      final SNode node = HandlerUtil.openNode(this.project, this.ref);
      if (node != null) {
        final Wrappers._T<String> nodePresentation = new Wrappers._T<String>();
        this.project.getModelAccess().runReadAction(new Runnable() {
          public void run() {
            nodePresentation.value = node.getPresentation();
          }
        });
        String text = HandlerUtil.HEADER_RESPONCE + "The requested node has been opened in MPS<br><b>Node</b>: " + nodePresentation.value + " <i>(" + node.getConcept() + ")</i><br><b>Project</b>: " + this.project.getName();
        this.request.sendResponse(HttpResponseStatus.OK, "text/html", Unpooled.copiedBuffer(text, CharsetUtil.UTF_8));
      } else {
        String text = HandlerUtil.HEADER_RESPONCE + "The requested node has not been found<br><b>Node reference</b>: " + this.ref + "<br><b>Project</b>: " + this.project.getName();
        HandlerUtil.showNodeNotFoundPopup(this.project, this.ref);
        this.request.sendResponse(HttpResponseStatus.OK, "text/html", Unpooled.copiedBuffer(text, CharsetUtil.UTF_8));
      }
    } else {
      String text = HandlerUtil.HEADER_RESPONCE + "No project is available";
      HandlerUtil.showNoProjectIsAvailablePopup();
      this.request.sendResponse(HttpResponseStatus.OK, "text/html", Unpooled.copiedBuffer(text, CharsetUtil.UTF_8));
    }
  }
}