Bloom.Edit.EditingView.OnPasteImage C# (CSharp) Method

        private void OnPasteImage(DomEventArgs ge)
        {
            if(!_model.CanChangeImages())
            {
                MessageBox.Show(
                    LocalizationManager.GetString("EditTab.CantPasteImageLocked",
                        "Sorry, this book is locked down so that images cannot be changed."));
                return;
            }

            PalasoImage clipboardImage = null;
            try
            {
                clipboardImage = GetImageFromClipboard();
                if(clipboardImage == null)
                {
                    MessageBox.Show(
                        LocalizationManager.GetString("EditTab.NoImageFoundOnClipboard",
                            "Before you can paste an image, copy one onto your 'clipboard', from another program."));
                    return;
                }

                var target = (GeckoHtmlElement) ge.Target.CastToGeckoElement();
                if(target.ClassName.Contains("licenseImage"))
                    return;

                var imageElement = GetImageNode(ge);
                if(imageElement == null)
                    return;
                Cursor = Cursors.WaitCursor;

                //nb: Taglib# requires an extension that matches the file content type.
                if(ImageUtils.AppearsToBeJpeg(clipboardImage))
                {
                    if(ShouldBailOutBecauseUserAgreedNotToUseJpeg(clipboardImage))
                        return;
                    Logger.WriteMinorEvent("[Paste Image] Pasting jpeg image {0}", clipboardImage.OriginalFilePath);
                    _model.ChangePicture(imageElement, clipboardImage, new NullProgress());
                }
                else
                {
                    //At this point, it could be a bmp, tiff, or PNG. We want it to be a PNG.
                    if(clipboardImage.OriginalFilePath == null) //they pasted an image, not a path
                    {
                        Logger.WriteMinorEvent("[Paste Image] Pasting image directly from clipboard (e.g. screenshot)");
                        _model.ChangePicture(imageElement, clipboardImage, new NullProgress());
                    }
                    //they pasted a path to a png
                    else if(Path.GetExtension(clipboardImage.OriginalFilePath).ToLowerInvariant() == ".png")
                    {
                        Logger.WriteMinorEvent("[Paste Image] Pasting png file {0}", clipboardImage.OriginalFilePath);
                        _model.ChangePicture(imageElement, clipboardImage, new NullProgress());
                    }
                    else // they pasted a path to some other bitmap format
                    {
                        var pathToPngVersion = Path.Combine(Path.GetTempPath(),
                            Path.GetFileNameWithoutExtension(clipboardImage.FileName) + ".png");
                        Logger.WriteMinorEvent("[Paste Image] Saving {0} ({1}) as {2} and converting to PNG", clipboardImage.FileName,
                            clipboardImage.OriginalFilePath, pathToPngVersion);
                        if(RobustFile.Exists(pathToPngVersion))
                        {
                            RobustFile.Delete(pathToPngVersion);
                        }
                        using(var temp = TempFile.TrackExisting(pathToPngVersion))
                        {
                            SIL.IO.RobustIO.SaveImage(clipboardImage.Image, pathToPngVersion, ImageFormat.Png);

                            using(var palasoImage = PalasoImage.FromFileRobustly(temp.Path))
                            {
                                _model.ChangePicture(imageElement, palasoImage, new NullProgress());
                            }
                        }
                    }
                }
            }
            catch(Exception error)
            {
                SIL.Reporting.ErrorReport.NotifyUserOfProblem(error, "The program had trouble getting an image from the clipboard.");
            }
            finally
            {
                if(clipboardImage != null)
                    clipboardImage.Dispose();
            }
            Cursor = Cursors.Default;
        }