manuylov.maxim.ocaml.actions.SwitchModuleFileAction.java Source code

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Here is the source code for manuylov.maxim.ocaml.actions.SwitchModuleFileAction.java

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/*
 * OCaml Support For IntelliJ Platform.
 * Copyright (C) 2010 Maxim Manuylov
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/gpl-2.0.html>.
 */

package manuylov.maxim.ocaml.actions;

import java.io.File;
import java.io.IOException;

import com.intellij.ide.IdeView;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.LangDataKeys;
import com.intellij.openapi.actionSystem.PlatformDataKeys;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.module.ModuleUtil;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ModuleRootManager;
import com.intellij.openapi.ui.Messages;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.vfs.LocalFileSystem;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiManager;
import manuylov.maxim.ocaml.util.OCamlFileUtil;
import manuylov.maxim.ocaml.util.OCamlModuleUtil;

/**
 * @author Maxim.Manuylov
 *         Date: 13.04.2010
 */
public class SwitchModuleFileAction extends AnAction {
    public void actionPerformed(final AnActionEvent e) {
        final Project project = e.getProject();
        if (project == null) {
            return;
        }

        final IdeView view = e.getData(LangDataKeys.IDE_VIEW);
        if (view == null) {
            return;
        }

        final VirtualFile file = e.getData(PlatformDataKeys.VIRTUAL_FILE);
        if (file == null) {
            return;
        }

        final VirtualFile parent = file.getParent();
        if (parent == null) {
            return;
        }

        final File anotherFile = new File(parent.getPath(), OCamlFileUtil.getAnotherFileName(file));
        VirtualFile anotherVirtualFile = LocalFileSystem.getInstance().findFileByIoFile(anotherFile);

        if (anotherVirtualFile == null) {
            final String anotherFilePath = FileUtil.toSystemDependentName(anotherFile.getAbsolutePath());
            final Module module = ModuleUtil.findModuleForFile(file, project);
            if (OCamlModuleUtil.hasOCamlExtension(module)
                    && ModuleRootManager.getInstance(module).getFileIndex().isInSourceContent(file)) {
                if (Messages.showYesNoCancelDialog(project,
                        "File \"" + anotherFilePath + "\" does not exist. Do you want to create it?",
                        "Open file \"" + anotherFilePath + "\"", Messages.getQuestionIcon()) != 0) {
                    return;
                }
                ApplicationManager.getApplication().runWriteAction(new Runnable() {
                    public void run() {
                        try {
                            parent.createChildData(SwitchModuleFileAction.this, anotherFile.getName());
                        } catch (final IOException e) {
                            Messages.showErrorDialog(project, e.getMessage(), "Error");
                        }
                    }
                });
                anotherVirtualFile = LocalFileSystem.getInstance().findFileByIoFile(anotherFile);
                if (anotherVirtualFile == null) {
                    return;
                }
            } else {
                Messages.showErrorDialog(project, "File \"" + anotherFilePath + "\" does not exist.",
                        "Open file \"" + anotherFilePath + "\"");
                return;
            }
        }

        final PsiFile anotherPsiFile = PsiManager.getInstance(project).findFile(anotherVirtualFile);
        if (anotherPsiFile == null) {
            return;
        }

        view.selectElement(anotherPsiFile);
    }
}