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A packaging of the IntelliJ Community Edition python-community library. This is release number 1 of trunk branch 142.
The newest version!
/*
 * 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.jetbrains.python.packaging.setupPy;

import com.intellij.ide.IdeView;
import com.intellij.ide.fileTemplates.FileTemplate;
import com.intellij.ide.fileTemplates.FileTemplateManager;
import com.intellij.ide.fileTemplates.actions.AttributesDefaults;
import com.intellij.ide.fileTemplates.actions.CreateFromTemplateAction;
import com.intellij.ide.fileTemplates.ui.CreateFromTemplateDialog;
import com.intellij.ide.util.PropertiesComponent;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.actionSystem.LangDataKeys;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ModuleRootManager;
import com.intellij.openapi.roots.ProjectFileIndex;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VfsUtilCore;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiDirectory;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiManager;
import com.intellij.util.SystemProperties;
import com.jetbrains.python.packaging.PyPackageUtil;
import com.jetbrains.python.psi.PyUtil;

import java.util.Collection;
import java.util.Properties;

/**
 * @author yole
 */
public class CreateSetupPyAction extends CreateFromTemplateAction {
  private static final String AUTHOR_PROPERTY = "python.packaging.author";
  private static final String EMAIL_PROPERTY = "python.packaging.author.email";

  public CreateSetupPyAction() {
    super(FileTemplateManager.getDefaultInstance().getInternalTemplate("Setup Script"));
    getTemplatePresentation().setText("Create setup.py");
  }

  @Override
  public FileTemplate getTemplate() {
    // to ensure changes are picked up, reload the template on every call (PY-6681)
    return FileTemplateManager.getDefaultInstance().getInternalTemplate("Setup Script");
  }

  @Override
  public void update(AnActionEvent e) {
    final Module module = e.getData(LangDataKeys.MODULE);
    e.getPresentation().setEnabled(module != null && PyPackageUtil.findSetupPy(module) == null);
  }

  @Override
  public AttributesDefaults getAttributesDefaults(DataContext dataContext) {
    Project project = CommonDataKeys.PROJECT.getData(dataContext);
    final AttributesDefaults defaults = new AttributesDefaults("setup.py").withFixedName(true);
    if (project != null) {
      defaults.add("Package_name", project.getName());
      final PropertiesComponent properties = PropertiesComponent.getInstance();
      defaults.add("Author", properties.getOrInit(AUTHOR_PROPERTY, SystemProperties.getUserName()));
      defaults.add("Author_Email", properties.getOrInit(EMAIL_PROPERTY, ""));
      defaults.addPredefined("PackageList", getPackageList(dataContext));
      defaults.addPredefined("PackageDirs", getPackageDirs(dataContext));
    }
    return defaults;
  }

  private static String getPackageList(DataContext dataContext) {
    final Module module = LangDataKeys.MODULE.getData(dataContext);
    if (module != null) {
      return "['" + StringUtil.join(PyPackageUtil.getPackageNames(module), "', '") + "']";
    }
    return "[]";
  }

  private static String getPackageDirs(DataContext dataContext) {
    final Module module = LangDataKeys.MODULE.getData(dataContext);
    if (module != null) {
      final VirtualFile[] sourceRoots = ModuleRootManager.getInstance(module).getSourceRoots();
      if (sourceRoots.length > 0) {
        for (VirtualFile sourceRoot : sourceRoots) {
          // TODO notify if we have multiple source roots and can't build mapping automatically
          final VirtualFile contentRoot = ProjectFileIndex.SERVICE.getInstance(module.getProject()).getContentRootForFile(sourceRoot);
          if (contentRoot != null && !Comparing.equal(contentRoot, sourceRoot)) {
            final String relativePath = VfsUtilCore.getRelativePath(sourceRoot, contentRoot, '/');
            return "\n    package_dir={'': '" + relativePath + "'},";
          }
        }
      }
    }
    return "";
  }

  @Override
  protected PsiDirectory getTargetDirectory(DataContext dataContext, IdeView view) {
    final Module module = LangDataKeys.MODULE.getData(dataContext);
    if (module != null) {
      final Collection sourceRoots = PyUtil.getSourceRoots(module);
      if (sourceRoots.size() > 0) {
        return PsiManager.getInstance(module.getProject()).findDirectory(sourceRoots.iterator().next());
      }
    }
    return super.getTargetDirectory(dataContext, view);
  }

  @Override
  protected void elementCreated(CreateFromTemplateDialog dialog, PsiElement createdElement) {
    final PropertiesComponent propertiesComponent = PropertiesComponent.getInstance();
    final Properties properties = dialog.getEnteredProperties();
    final String author = properties.getProperty("Author");
    if (author != null) {
      propertiesComponent.setValue(AUTHOR_PROPERTY, author);
    }
    final String authorEmail = properties.getProperty("Author_Email");
    if (authorEmail != null) {
      propertiesComponent.setValue(EMAIL_PROPERTY, authorEmail);
    }
  }
}