plugins/cvs/cvs-plugin/src/com/intellij/cvsSupport2/actions/AbstractAction.java

/*
 * Copyright 2000-2014 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.cvsSupport2.actions;

import com.intellij.CvsBundle;
import com.intellij.cvsSupport2.actions.cvsContext.CvsContext;
import com.intellij.cvsSupport2.actions.cvsContext.CvsContextWrapper;
import com.intellij.cvsSupport2.cvsExecution.CvsOperationExecutor;
import com.intellij.cvsSupport2.cvsExecution.CvsOperationExecutorCallback;
import com.intellij.cvsSupport2.cvsExecution.ModalityContext;
import com.intellij.cvsSupport2.cvshandlers.CvsHandler;
import com.intellij.cvsSupport2.cvshandlers.FileSetToBeUpdated;
import com.intellij.cvsSupport2.ui.CvsTabbedWindow;
import com.intellij.history.LocalHistory;
import com.intellij.history.LocalHistoryAction;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.Presentation;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.progress.ProgressManager;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vcs.actions.VcsContext;
import com.intellij.openapi.vcs.ui.Refreshable;

import javax.swing.*;
import java.awt.*;
import java.awt.event.InputEvent;


public abstract class AbstractAction extends AnAction implements DumbAware {
  protected static final Logger LOG = Logger.getInstance("#com.intellij.cvsSupport2.actions.AbstractAction");
  private final boolean myStartLvcsAction;
  private boolean myAutoSave = true;
  private LocalHistoryAction myLocalHistoryAction = LocalHistoryAction.NULL;

  public AbstractAction(boolean startLvcsAction) {
    myStartLvcsAction = startLvcsAction;
  }

  public AbstractAction(boolean startLvcsAction, String name, Icon icon) {
    super(name, null, icon);
    myStartLvcsAction = startLvcsAction;
  }

  public AbstractAction setAutoSave(final boolean autoSave) {
    myAutoSave = autoSave;
    return this;
  }

  protected void beforeActionPerformed(VcsContext context) {}

  public void actionPerformed(AnActionEvent e) {
    actionPerformed(CvsContextWrapper.createCachedInstance(e));
  }

  protected abstract String getTitle(VcsContext context);

  protected abstract CvsHandler getCvsHandler(CvsContext context);

  public void actionPerformed(final CvsContext context) {
    Runnable beforeAction = new Runnable() {
      public void run() {
        beforeActionPerformed(context);
      }
    };

    Runnable afterAction = new Runnable() {
      public void run() {
        CvsHandler handler;

        synchronized (AbstractAction.class) {
          try {
            handler = getCvsHandler(context);
          }
          catch (Exception ex) {
            LOG.error(ex);
            handler = CvsHandler.NULL;
          }
        }

        LOG.assertTrue(handler != null);

        actionPerformed(context, handler);

      }
    };

    if (ProgressManager.getInstance().getProgressIndicator() != null) {
      beforeAction.run();
      afterAction.run();
    }
    else {
      if (ProgressManager.getInstance().runProcessWithProgressSynchronously(beforeAction, getTitle(context), true, context.getProject())) {
        afterAction.run();
      }

    }


  }

  public void actionPerformed(final CvsContext context, CvsHandler handler) {
    start(context);

    final Project project = context.getProject();

    try {
      performAction(project, handler, context);
    }
    catch (Exception e1) {
      LOG.error(e1);
    }
  }

  private void startAction(VcsContext context) {
    if (!myStartLvcsAction) return;

    Project project = context.getProject();
    if (project == null || getTitle(context) == null) return;

    String name = CvsBundle.getCvsDisplayName() + ": " + getTitle(context);
    myLocalHistoryAction = LocalHistory.getInstance().startAction(name);
  }

  protected void endAction() {
    myLocalHistoryAction.finish();
    myLocalHistoryAction = LocalHistoryAction.NULL;
  }

  protected void start(VcsContext context) {
    final Project project = context.getProject();
    if (project != null) {
      if (ApplicationManager.getApplication().isDispatchThread() && myAutoSave) {
        ApplicationManager.getApplication().saveAll();
      }
    }
  }

  protected void performAction(final Project project, final CvsHandler handler, final CvsContext context) {
    final CvsOperationExecutor executor = new CvsOperationExecutor(project);
    executor.performActionSync(handler, new MyCvsOperationExecutorCallback(context, handler, executor));
  }


  protected void onActionPerformed(CvsContext context, CvsTabbedWindow tabbedWindow, boolean successfully, CvsHandler handler) {
    if (handler == CvsHandler.NULL) return;
    Refreshable refreshablePanel = context.getRefreshableDialog();
    if (refreshablePanel != null) {
      refreshablePanel.refresh();
    }
  }

  protected static void adjustName(boolean showDialogOptions, AnActionEvent e) {
    boolean actualShow = showDialogOptions || shiftPressed(e);
    Presentation presentation = e.getPresentation();
    String itemText = e.getPresentation().getTextWithMnemonic();
    if (itemText == null) return;
    if (itemText.endsWith("...")) {
      if (actualShow) return;
      presentation.setText(itemText.substring(0, itemText.length() - 3));
    }
    else {
      if (!actualShow) return;
      presentation.setText(itemText + "...");
    }
  }

  private static boolean shiftPressed(AnActionEvent e) {
    InputEvent inputEvent = e.getInputEvent();
    return inputEvent != null && (inputEvent.getModifiers() & Event.SHIFT_MASK) != 0;
  }

  private class MyCvsOperationExecutorCallback implements CvsOperationExecutorCallback {
    private final CvsContext myContext;
    private final CvsHandler myHandler;
    private final CvsOperationExecutor myExecutor;

    public MyCvsOperationExecutorCallback(CvsContext context, CvsHandler handler, CvsOperationExecutor executor) {
      myContext = context;
      myHandler = handler;
      myExecutor = executor;
    }

    public void executeInProgressAfterAction(ModalityContext modalityContext) {
      startAction(myContext);
      FileSetToBeUpdated files = myHandler.getFiles();

      files.refreshFilesAsync(new Runnable() {
        public void run() {
          endAction();
        }
      });
    }

    public void executionFinished(boolean successfully) {
      CvsTabbedWindow tabbedWindow = myExecutor.openTabbedWindow(myHandler);
      onActionPerformed(myContext, tabbedWindow, successfully, myHandler);
    }


    public void executionFinishedSuccessfully() {
    }
  }
}