com.intellij.ide.actions.ReloadFromDiskAction.java Source code

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Here is the source code for com.intellij.ide.actions.ReloadFromDiskAction.java

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/*
 * Copyright 2000-2009 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.ide.actions;

import com.intellij.ide.IdeBundle;
import com.intellij.openapi.actionSystem.*;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.command.CommandProcessor;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.Messages;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiManager;

public class ReloadFromDiskAction extends AnAction implements DumbAware {
    @Override
    public void actionPerformed(AnActionEvent e) {
        DataContext dataContext = e.getDataContext();
        final Project project = CommonDataKeys.PROJECT.getData(dataContext);
        final Editor editor = PlatformDataKeys.EDITOR.getData(dataContext);
        if (editor == null)
            return;
        final PsiFile psiFile = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument());
        if (psiFile == null)
            return;

        int res = Messages.showOkCancelDialog(project,
                IdeBundle.message("prompt.reload.file.from.disk", psiFile.getVirtualFile().getPresentableUrl()),
                IdeBundle.message("title.reload.file"), Messages.getWarningIcon());
        if (res != 0)
            return;

        CommandProcessor.getInstance().executeCommand(project, new Runnable() {
            @Override
            public void run() {
                ApplicationManager.getApplication().runWriteAction(new Runnable() {
                    @Override
                    public void run() {
                        PsiManager.getInstance(project).reloadFromDisk(psiFile);
                    }
                });
            }
        }, IdeBundle.message("command.reload.from.disk"), null);
    }

    @Override
    public void update(AnActionEvent event) {
        Presentation presentation = event.getPresentation();
        DataContext dataContext = event.getDataContext();
        Project project = CommonDataKeys.PROJECT.getData(dataContext);
        if (project == null) {
            presentation.setEnabled(false);
            return;
        }
        Editor editor = PlatformDataKeys.EDITOR.getData(dataContext);
        if (editor == null) {
            presentation.setEnabled(false);
            return;
        }
        Document document = editor.getDocument();
        PsiFile psiFile = PsiDocumentManager.getInstance(project).getPsiFile(document);
        if (psiFile == null || psiFile.getVirtualFile() == null) {
            presentation.setEnabled(false);
        }
    }
}