package com.karateca.jstoolbox.tobrowser;

import com.intellij.ide.BrowserUtil;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.LangDataKeys;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.psi.PsiDirectory;
import com.intellij.psi.PsiFile;
import com.karateca.jstoolbox.MyAction;
import com.karateca.jstoolbox.config.JsToolboxSettings;

public class ToBrowserAction extends MyAction {
  @Override
  public void actionPerformed(AnActionEvent actionEvent) {
    if (!canEnableAction(actionEvent)) {
      return;
    }

    PsiFile file = actionEvent.getData(LangDataKeys.PSI_FILE);
    if (file == null) {
      return;
    }

    JsToolboxSettings settings = new JsToolboxSettings();

    String fileName = getCurrentFileName(actionEvent);

    if (settings.getUseFilePath()) {
      // Get the directory.
      PsiDirectory containingDirectory = file.getContainingDirectory();
      if (containingDirectory == null) {
        return;
      }

      String fromPath = settings.getFromPath();
      fileName = containingDirectory.toString().replaceFirst("^.*" + fromPath, fromPath) +
          System.getProperty("file.separator") + fileName;
    }

    String searchUrl = settings.getSearchUrl();

    String url = searchUrl.replace(JsToolboxSettings.FILE_NAME_TOKEN, fileName);

    // Is there a line number?
    int lineNumber = getLineNumber(actionEvent, file);
    if (lineNumber != -1) {
      url = url.replace(JsToolboxSettings.LINE_TOKEN, String.valueOf(lineNumber));
    }

    openBrowser(url);
  }

  private int getLineNumber(AnActionEvent actionEvent, PsiFile file) {
    Document document = FileDocumentManager.getInstance().getDocument(file.getVirtualFile());
    if (document == null) {
      return -1;
    }
    Editor editor = getEditor(actionEvent);
    int offset = editor.getCaretModel().getVisualLineEnd();
    return document.getLineNumber(offset) + 1;
  }

  private void openBrowser(String url) {
    try {
      BrowserUtil.browse(url);
    } catch (Exception e) {
      System.err.println("Error: " + e.getMessage());
    }
  }

}

package com.karateca.jstoolbox.tobrowser;

import com.intellij.ide.BrowserUtil;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.LangDataKeys;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.psi.PsiDirectory;
import com.intellij.psi.PsiFile;
import com.karateca.jstoolbox.MyAction;
import com.karateca.jstoolbox.config.JsToolboxSettings;

public class ToBrowserAction extends MyAction {
  @Override
  public void actionPerformed(AnActionEvent actionEvent) {
    if (!canEnableAction(actionEvent)) {
      return;
    }

    PsiFile file = actionEvent.getData(LangDataKeys.PSI_FILE);
    if (file == null) {
      return;
    }

    JsToolboxSettings settings = new JsToolboxSettings();

    String fileName = getCurrentFileName(actionEvent);

    if (settings.getUseFilePath()) {
      // Get the directory.
      PsiDirectory containingDirectory = file.getContainingDirectory();
      if (containingDirectory == null) {
        return;
      }

      String fromPath = settings.getFromPath();
      fileName = containingDirectory.toString().replaceFirst("^.*" + fromPath, fromPath) +
          System.getProperty("file.separator") + fileName;
    }

    String searchUrl = settings.getSearchUrl();

    String url = searchUrl.replace(JsToolboxSettings.FILE_NAME_TOKEN, fileName);

    // Is there a line number?
    int lineNumber = getLineNumber(actionEvent, file);
    if (lineNumber != -1) {
      url = url.replace(JsToolboxSettings.LINE_TOKEN, String.valueOf(lineNumber));
    }

    openBrowser(url);
  }

  private int getLineNumber(AnActionEvent actionEvent, PsiFile file) {
    Document document = FileDocumentManager.getInstance().getDocument(file.getVirtualFile());
    if (document == null) {
      return -1;
    }
    Editor editor = getEditor(actionEvent);
    int offset = editor.getCaretModel().getVisualLineEnd();
    return document.getLineNumber(offset);
  }

  private void openBrowser(String url) {
    try {
      BrowserUtil.browse(url);
    } catch (Exception e) {
      System.err.println("Error: " + e.getMessage());
    }
  }

}

Remove the plus-one for the line number