INodeChangingCallback

com.aspose.words
Interface INodeChangingCallback

public interface INodeChangingCallback

Implement this interface if you want to receive notifications when nodes are inserted or removed in the document.

Example:

Shows how customize node changing with a callback.

public void fontChangeViaCallback() throws Exception {
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    // Set the node changing callback to custom implementation,
    // then add/remove nodes to get it to generate a log.
    HandleNodeChangingFontChanger callback = new HandleNodeChangingFontChanger();
    doc.setNodeChangingCallback(callback);

    builder.writeln("Hello world!");
    builder.writeln("Hello again!");
    builder.insertField(" HYPERLINK \"https://www.google.com/\" ");
    builder.insertShape(ShapeType.RECTANGLE, 300.0, 300.0);

    doc.getRange().getFields().get(0).remove();

    System.out.println(callback.getLog());
}

/// <summary>
/// Logs the date and time of each node insertion and removal.
/// Sets a custom font name/size for the text contents of Run nodes.
/// </summary>
public static class HandleNodeChangingFontChanger implements INodeChangingCallback {
    public void nodeInserted(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash:\t{0}", args.getNode().hashCode()));

        if (args.getNode().getNodeType() == NodeType.RUN) {
            Font font = ((Run) args.getNode()).getFont();
            mLog.append(MessageFormat.format("\tFont:\tChanged from \"{0}\" {1}pt", font.getName(), font.getSize()));

            font.setSize(24.0);
            font.setName("Arial");

            mLog.append(MessageFormat.format(" to \"{0}\" {1}pt", font.getName(), font.getSize()));
            mLog.append(MessageFormat.format("\tContents:\n\t\t\"{0}\"", args.getNode().getText()));
        }
    }

    public void nodeInserting(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode insertion:", new Date()));
    }

    public void nodeRemoved(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash code:\t{0}", args.getNode().hashCode()));
    }

    public void nodeRemoving(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode removal:", new Date()));
    }

    public String getLog() {
        return mLog.toString();
    }

    private final StringBuilder mLog = new StringBuilder();
}

Method Summary
`abstract void`	`nodeInserted(NodeChangingArgs args)`
`abstract void`	Called when a node belonging to this document has been inserted into another node.
`abstract void`	`nodeInserting(NodeChangingArgs args)`
`abstract void`	Called just before a node belonging to this document is about to be inserted into another node.
`abstract void`	`nodeRemoved(NodeChangingArgs args)`
`abstract void`	Called when a node belonging to this document has been removed from its parent.
`abstract void`	`nodeRemoving(NodeChangingArgs args)`
`abstract void`	Called just before a node belonging to this document is about to be removed from the document.

Method Detail

nodeInserted
public abstract void nodeInserted(NodeChangingArgs args) throws java.lang.Exception

Called when a node belonging to this document has been inserted into another node.

Example:

Shows how customize node changing with a callback.

public void fontChangeViaCallback() throws Exception {
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    // Set the node changing callback to custom implementation,
    // then add/remove nodes to get it to generate a log.
    HandleNodeChangingFontChanger callback = new HandleNodeChangingFontChanger();
    doc.setNodeChangingCallback(callback);

    builder.writeln("Hello world!");
    builder.writeln("Hello again!");
    builder.insertField(" HYPERLINK \"https://www.google.com/\" ");
    builder.insertShape(ShapeType.RECTANGLE, 300.0, 300.0);

    doc.getRange().getFields().get(0).remove();

    System.out.println(callback.getLog());
}

/// <summary>
/// Logs the date and time of each node insertion and removal.
/// Sets a custom font name/size for the text contents of Run nodes.
/// </summary>
public static class HandleNodeChangingFontChanger implements INodeChangingCallback {
    public void nodeInserted(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash:\t{0}", args.getNode().hashCode()));

        if (args.getNode().getNodeType() == NodeType.RUN) {
            Font font = ((Run) args.getNode()).getFont();
            mLog.append(MessageFormat.format("\tFont:\tChanged from \"{0}\" {1}pt", font.getName(), font.getSize()));

            font.setSize(24.0);
            font.setName("Arial");

            mLog.append(MessageFormat.format(" to \"{0}\" {1}pt", font.getName(), font.getSize()));
            mLog.append(MessageFormat.format("\tContents:\n\t\t\"{0}\"", args.getNode().getText()));
        }
    }

    public void nodeInserting(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode insertion:", new Date()));
    }

    public void nodeRemoved(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash code:\t{0}", args.getNode().hashCode()));
    }

    public void nodeRemoving(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode removal:", new Date()));
    }

    public String getLog() {
        return mLog.toString();
    }

    private final StringBuilder mLog = new StringBuilder();
}

nodeInserting
public abstract void nodeInserting(NodeChangingArgs args) throws java.lang.Exception

Called just before a node belonging to this document is about to be inserted into another node.

Example:

Shows how customize node changing with a callback.

public void fontChangeViaCallback() throws Exception {
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    // Set the node changing callback to custom implementation,
    // then add/remove nodes to get it to generate a log.
    HandleNodeChangingFontChanger callback = new HandleNodeChangingFontChanger();
    doc.setNodeChangingCallback(callback);

    builder.writeln("Hello world!");
    builder.writeln("Hello again!");
    builder.insertField(" HYPERLINK \"https://www.google.com/\" ");
    builder.insertShape(ShapeType.RECTANGLE, 300.0, 300.0);

    doc.getRange().getFields().get(0).remove();

    System.out.println(callback.getLog());
}

/// <summary>
/// Logs the date and time of each node insertion and removal.
/// Sets a custom font name/size for the text contents of Run nodes.
/// </summary>
public static class HandleNodeChangingFontChanger implements INodeChangingCallback {
    public void nodeInserted(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash:\t{0}", args.getNode().hashCode()));

        if (args.getNode().getNodeType() == NodeType.RUN) {
            Font font = ((Run) args.getNode()).getFont();
            mLog.append(MessageFormat.format("\tFont:\tChanged from \"{0}\" {1}pt", font.getName(), font.getSize()));

            font.setSize(24.0);
            font.setName("Arial");

            mLog.append(MessageFormat.format(" to \"{0}\" {1}pt", font.getName(), font.getSize()));
            mLog.append(MessageFormat.format("\tContents:\n\t\t\"{0}\"", args.getNode().getText()));
        }
    }

    public void nodeInserting(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode insertion:", new Date()));
    }

    public void nodeRemoved(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash code:\t{0}", args.getNode().hashCode()));
    }

    public void nodeRemoving(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode removal:", new Date()));
    }

    public String getLog() {
        return mLog.toString();
    }

    private final StringBuilder mLog = new StringBuilder();
}

nodeRemoved
public abstract void nodeRemoved(NodeChangingArgs args) throws java.lang.Exception

Called when a node belonging to this document has been removed from its parent.

Example:

Shows how customize node changing with a callback.

public void fontChangeViaCallback() throws Exception {
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    // Set the node changing callback to custom implementation,
    // then add/remove nodes to get it to generate a log.
    HandleNodeChangingFontChanger callback = new HandleNodeChangingFontChanger();
    doc.setNodeChangingCallback(callback);

    builder.writeln("Hello world!");
    builder.writeln("Hello again!");
    builder.insertField(" HYPERLINK \"https://www.google.com/\" ");
    builder.insertShape(ShapeType.RECTANGLE, 300.0, 300.0);

    doc.getRange().getFields().get(0).remove();

    System.out.println(callback.getLog());
}

/// <summary>
/// Logs the date and time of each node insertion and removal.
/// Sets a custom font name/size for the text contents of Run nodes.
/// </summary>
public static class HandleNodeChangingFontChanger implements INodeChangingCallback {
    public void nodeInserted(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash:\t{0}", args.getNode().hashCode()));

        if (args.getNode().getNodeType() == NodeType.RUN) {
            Font font = ((Run) args.getNode()).getFont();
            mLog.append(MessageFormat.format("\tFont:\tChanged from \"{0}\" {1}pt", font.getName(), font.getSize()));

            font.setSize(24.0);
            font.setName("Arial");

            mLog.append(MessageFormat.format(" to \"{0}\" {1}pt", font.getName(), font.getSize()));
            mLog.append(MessageFormat.format("\tContents:\n\t\t\"{0}\"", args.getNode().getText()));
        }
    }

    public void nodeInserting(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode insertion:", new Date()));
    }

    public void nodeRemoved(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash code:\t{0}", args.getNode().hashCode()));
    }

    public void nodeRemoving(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode removal:", new Date()));
    }

    public String getLog() {
        return mLog.toString();
    }

    private final StringBuilder mLog = new StringBuilder();
}

nodeRemoving
public abstract void nodeRemoving(NodeChangingArgs args) throws java.lang.Exception

Called just before a node belonging to this document is about to be removed from the document.

Example:

Shows how customize node changing with a callback.

public void fontChangeViaCallback() throws Exception {
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    // Set the node changing callback to custom implementation,
    // then add/remove nodes to get it to generate a log.
    HandleNodeChangingFontChanger callback = new HandleNodeChangingFontChanger();
    doc.setNodeChangingCallback(callback);

    builder.writeln("Hello world!");
    builder.writeln("Hello again!");
    builder.insertField(" HYPERLINK \"https://www.google.com/\" ");
    builder.insertShape(ShapeType.RECTANGLE, 300.0, 300.0);

    doc.getRange().getFields().get(0).remove();

    System.out.println(callback.getLog());
}

/// <summary>
/// Logs the date and time of each node insertion and removal.
/// Sets a custom font name/size for the text contents of Run nodes.
/// </summary>
public static class HandleNodeChangingFontChanger implements INodeChangingCallback {
    public void nodeInserted(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash:\t{0}", args.getNode().hashCode()));

        if (args.getNode().getNodeType() == NodeType.RUN) {
            Font font = ((Run) args.getNode()).getFont();
            mLog.append(MessageFormat.format("\tFont:\tChanged from \"{0}\" {1}pt", font.getName(), font.getSize()));

            font.setSize(24.0);
            font.setName("Arial");

            mLog.append(MessageFormat.format(" to \"{0}\" {1}pt", font.getName(), font.getSize()));
            mLog.append(MessageFormat.format("\tContents:\n\t\t\"{0}\"", args.getNode().getText()));
        }
    }

    public void nodeInserting(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode insertion:", new Date()));
    }

    public void nodeRemoved(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));
        mLog.append(MessageFormat.format("\tHash code:\t{0}", args.getNode().hashCode()));
    }

    public void nodeRemoving(NodeChangingArgs args) {
        mLog.append(MessageFormat.format("\n{0}\tNode removal:", new Date()));
    }

    public String getLog() {
        return mLog.toString();
    }

    private final StringBuilder mLog = new StringBuilder();
}

See Also:
Aspose.Words Documentation - the home page for the Aspose.Words Product Documentation.
Aspose.Words Support Forum - our preferred method of support.

com.aspose.words Interface INodeChangingCallback

nodeInserted

nodeInserting

nodeRemoved

nodeRemoving

com.aspose.words
Interface INodeChangingCallback