com.aspose.words

Interface IWarningCallback

Implement this interface if you want to have your own custom method called to capture loss of fidelity warnings that can occur during document loading or saving.

Example:

Shows how to implement the IWarningCallback to be notified of any font substitution during document save.
public static class HandleDocumentWarnings implements IWarningCallback
{
    /**
     *  Our callback only needs to implement the "Warning" method. This method is called whenever there is a
     *  potential issue during document processing. The callback can be set to listen for warnings generated during document
     *  load and/or document save.
     */
    public void warning(WarningInfo info)
    {
        // We are only interested in fonts being substituted.
        if (info.getWarningType() == WarningType.FONT_SUBSTITUTION)
        {
            System.out.println("Font substitution: " + info.getDescription());
        }
    }

}

Example:

Demonstrates how to receive notifications of font substitutions by using IWarningCallback.
// Load the document to render.
Document doc = new Document(getMyDir() + "Document.doc");

// Create a new class implementing IWarningCallback and assign it to the PdfSaveOptions class.
HandleDocumentWarnings callback = new HandleDocumentWarnings();
doc.setWarningCallback(callback);

// We can choose the default font to use in the case of any missing fonts.
FontSettings.getDefaultInstance().setDefaultFontName("Arial");

// For testing we will set Aspose.Words to look for fonts only in a folder which doesn't exist. Since Aspose.Words won't
// find any fonts in the specified directory, then during rendering the fonts in the document will be substituted with the default 
// font specified under FontSettings.DefaultFontName. We can pick up on this substitution using our callback.
FontSettings.getDefaultInstance().setFontsFolder("", false);

// Pass the save options along with the save path to the save method.
doc.save(getMyDir() + "\\Artifacts\\Rendering.MissingFontNotification.pdf");

Method Summary
abstract voidwarning(WarningInfo info)
Aspose.Words invokes this method when it encounters some issue during document loading or saving that might result in loss of formatting or data fidelity.
 

    • Method Detail

      • warning

        public abstract void warning(WarningInfo info)
        Aspose.Words invokes this method when it encounters some issue during document loading or saving that might result in loss of formatting or data fidelity.

        Example:

        Shows how to implement the IWarningCallback to be notified of any font substitution during document save.
        public static class HandleDocumentWarnings implements IWarningCallback
        {
            /**
             *  Our callback only needs to implement the "Warning" method. This method is called whenever there is a
             *  potential issue during document processing. The callback can be set to listen for warnings generated during document
             *  load and/or document save.
             */
            public void warning(WarningInfo info)
            {
                // We are only interested in fonts being substituted.
                if (info.getWarningType() == WarningType.FONT_SUBSTITUTION)
                {
                    System.out.println("Font substitution: " + info.getDescription());
                }
            }
        
        }