com.aspose.words
Class FieldStart

java.lang.Object
  extended by Node
      extended by Inline
          extended by SpecialChar
              extended by FieldChar
                  extended by com.aspose.words.FieldStart
All Implemented Interfaces:
java.lang.Cloneable

public class FieldStart 
extends FieldChar

Represents a start of a Word field in a document.

FieldStart is an inline-level node and represented by the ControlChar.FIELD_START_CHAR control character in the document.

FieldStart can only be a child of Paragraph.

A complete field in a Microsoft Word document is a complex structure consisting of a field start character, field code, field separator character, field result and field end character. Some fields only have field start, field code and field end.

To easily insert a new field into a document, use the DocumentBuilder.insertField(java.lang.String) method.

Example:

Shows how to work with a document's field collection.
public void fieldCollection() throws Exception {
    // Create a new document and insert some fields
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    builder.insertField(" DATE \\@ \"dddd, d MMMM yyyy\" ");
    builder.insertField(" TIME ");
    builder.insertField(" REVNUM ");
    builder.insertField(" AUTHOR  \"John Doe\" ");
    builder.insertField(" SUBJECT \"My Subject\" ");
    builder.insertField(" QUOTE \"Hello world!\" ");
    doc.updateFields();

    // Get the collection that contains all the fields in a document
    FieldCollection fields = doc.getRange().getFields();
    Assert.assertEquals(fields.getCount(), 6);

    // Iterate over the field collection and print contents and type of every field using a custom visitor implementation
    FieldVisitor fieldVisitor = new FieldVisitor();

    Iterator<Field> fieldEnumerator = fields.iterator();

    while (fieldEnumerator.hasNext()) {
        if (fieldEnumerator.next() != null) {
            Field currentField = fieldEnumerator.next();

            currentField.getStart().accept(fieldVisitor);
            if (currentField.getSeparator() != null) {
                currentField.getSeparator().accept(fieldVisitor);
            }
            currentField.getEnd().accept(fieldVisitor);
        } else {
            System.out.println("There are no fields in the document.");
        }
    }

    System.out.println(fieldVisitor.getText());

    // Get a field to remove itself
    fields.get(0).remove();
    Assert.assertEquals(fields.getCount(), 5);

    // Remove a field by reference
    Field lastField = fields.get(3);
    fields.remove(lastField);
    Assert.assertEquals(fields.getCount(), 4);

    // Remove a field by index
    fields.removeAt(2);
    Assert.assertEquals(fields.getCount(), 3);

    // Remove all fields from the document
    fields.clear();
    Assert.assertEquals(fields.getCount(), 0);
}

/// <summary>
/// Document visitor implementation that prints field info.
/// </summary>
public static class FieldVisitor extends DocumentVisitor {
    public FieldVisitor() {
        mBuilder = new StringBuilder();
    }

    /// <summary>
    /// Gets the plain text of the document that was accumulated by the visitor.
    /// </summary>
    public String getText() {
        return mBuilder.toString();
    }

    /// <summary>
    /// Called when a FieldStart node is encountered in the document.
    /// </summary>
    public int visitFieldStart(final FieldStart fieldStart) {
        mBuilder.append("Found field: " + fieldStart.getFieldType() + "\r\n");
        mBuilder.append("\tField code: " + fieldStart.getField().getFieldCode() + "\r\n");
        mBuilder.append("\tDisplayed as: " + fieldStart.getField().getResult() + "\r\n");

        return VisitorAction.CONTINUE;
    }

    /// <summary>
    /// Called when a FieldSeparator node is encountered in the document.
    /// </summary>
    public int visitFieldSeparator(final FieldSeparator fieldSeparator) {
        mBuilder.append("\tFound separator: " + fieldSeparator.getText() + "\r\n");

        return VisitorAction.CONTINUE;
    }

    /// <summary>
    /// Called when a FieldEnd node is encountered in the document.
    /// </summary>
    public int visitFieldEnd(final FieldEnd fieldEnd) {
        mBuilder.append("End of field: " + fieldEnd.getFieldType() + "\r\n");

        return VisitorAction.CONTINUE;
    }

    private StringBuilder mBuilder;
}

Example:

Finds all hyperlinks in a Word document and changes their URL and display name.
import com.aspose.words.*;
import org.testng.annotations.Test;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Shows how to replace hyperlinks in a Word document.
 */
public class ExReplaceHyperlinks extends ApiExampleBase {
    /**
     * Finds all hyperlinks in a Word document and changes their URL and display name.
     */
    public void fields() throws Exception {
        // Specify your document name here
        Document doc = new Document(getMyDir() + "Hyperlinks.docx");

        // Hyperlinks in a Word documents are fields, select all field start nodes so we can find the hyperlinks
        NodeList fieldStarts = doc.selectNodes("//FieldStart");
        for (FieldStart fieldStart : (Iterable<FieldStart>) fieldStarts) {
            if (fieldStart.getFieldType() == FieldType.FIELD_HYPERLINK) {
                // The field is a hyperlink field, use the "facade" class to help to deal with the field
                Hyperlink hyperlink = new Hyperlink(fieldStart);

                // Some hyperlinks can be local (links to bookmarks inside the document), ignore these
                if (hyperlink.isLocal()) continue;

                // The Hyperlink class allows to set the target URL and the display name 
                // of the link easily by setting the properties
                hyperlink.setTarget(NEW_URL);
                hyperlink.setName(NEW_NAME);
            }
        }

        doc.save(getArtifactsDir() + "ReplaceHyperlinks.Fields.docx");
    }

    private static final String NEW_URL = "http://www.aspose.com";
    private static final String NEW_NAME = "Aspose - The .NET & Java Component Publisher";
}

/**
 * This "facade" class makes it easier to work with a hyperlink field in a Word document.
 * <p>
 * A hyperlink is represented by a HYPERLINK field in a Word document. A field in Aspose.Words
 * consists of several nodes and it might be difficult to work with all those nodes directly.
 * Note this is a simple implementation and will work only if the hyperlink code and name
 * each consist of one Run only.
 * <p>
 * [FieldStart][Run - field code][FieldSeparator][Run - field result][FieldEnd]
 * <p>
 * The field code contains a String in one of these formats:
 * HYPERLINK "url"
 * HYPERLINK \l "bookmark name"
 * <p>
 * The field result contains text that is displayed to the user.
 */
class Hyperlink {
    Hyperlink(final FieldStart fieldStart) throws Exception {
        if (fieldStart == null) {
            throw new IllegalArgumentException("fieldStart");
        }

        if (fieldStart.getFieldType() != FieldType.FIELD_HYPERLINK) {
            throw new IllegalArgumentException("Field start type must be FieldHyperlink.");
        }

        mFieldStart = fieldStart;

        // Find the field separator node
        mFieldSeparator = findNextSibling(mFieldStart, NodeType.FIELD_SEPARATOR);
        if (mFieldSeparator == null) {
            throw new IllegalStateException("Cannot find field separator.");
        }

        // Find the field end node. Normally field end will always be found, but in the example document 
        // there happens to be a paragraph break included in the hyperlink and this puts the field end 
        // in the next paragraph. It will be much more complicated to handle fields which span several 
        // paragraphs correctly, but in this case allowing field end to be null is enough for our purposes
        mFieldEnd = findNextSibling(mFieldSeparator, NodeType.FIELD_END);

        // Field code looks something like [ HYPERLINK "http:\\www.myurl.com" ], but it can consist of several runs
        String fieldCode = getTextSameParent(mFieldStart.getNextSibling(), mFieldSeparator);
        Matcher matcher = G_REGEX.matcher(fieldCode.trim());
        matcher.find();
        mIsLocal = (matcher.group(1) != null) && (matcher.group(1).length() > 0);    //The link is local if \l is present in the field code.
        mTarget = matcher.group(2).toString();
    }

    /**
     * Gets or sets the display name of the hyperlink.
     */
    String getName() throws Exception {
        return getTextSameParent(mFieldSeparator, mFieldEnd);
    }

    void setName(final String value) throws Exception {
        // Hyperlink display name is stored in the field result which is a Run 
        // node between field separator and field end
        Run fieldResult = (Run) mFieldSeparator.getNextSibling();
        fieldResult.setText(value);

        // But sometimes the field result can consist of more than one run, delete these runs
        removeSameParent(fieldResult.getNextSibling(), mFieldEnd);
    }

    /**
     * Gets or sets the target url or bookmark name of the hyperlink.
     */
    String getTarget() {
        return mTarget;
    }

    void setTarget(final String value) throws Exception {
        mTarget = value;
        updateFieldCode();
    }

    /**
     * True if the hyperlinks target is a bookmark inside the document. False if the hyperlink is a url.
     */
    boolean isLocal() {
        return mIsLocal;
    }

    void isLocal(final boolean value) throws Exception {
        mIsLocal = value;
        updateFieldCode();
    }

    private void updateFieldCode() throws Exception {
        // Field code is stored in a Run node between field start and field separator
        Run fieldCode = (Run) mFieldStart.getNextSibling();
        fieldCode.setText(java.text.MessageFormat.format("HYPERLINK {0}\"{1}\"", ((mIsLocal) ? "\\l " : ""), mTarget));

        // But sometimes the field code can consist of more than one run, delete these runs
        removeSameParent(fieldCode.getNextSibling(), mFieldSeparator);
    }

    /**
     * Goes through siblings starting from the start node until it finds a node of the specified type or null.
     */
    private static Node findNextSibling(final Node startNode, final int nodeType) {
        for (Node node = startNode; node != null; node = node.getNextSibling()) {
            if (node.getNodeType() == nodeType) return node;
        }
        return null;
    }

    /**
     * Retrieves text from start up to but not including the end node.
     */
    private static String getTextSameParent(final Node startNode, final Node endNode) {
        if ((endNode != null) && (startNode.getParentNode() != endNode.getParentNode())) {
            throw new IllegalArgumentException("Start and end nodes are expected to have the same parent.");
        }

        StringBuilder builder = new StringBuilder();
        for (Node child = startNode; !child.equals(endNode); child = child.getNextSibling()) {
            builder.append(child.getText());
        }

        return builder.toString();
    }

    /**
     * Removes nodes from start up to but not including the end node.
     * Start and end are assumed to have the same parent.
     */
    private static void removeSameParent(final Node startNode, final Node endNode) {
        if ((endNode != null) && (startNode.getParentNode() != endNode.getParentNode())) {
            throw new IllegalArgumentException("Start and end nodes are expected to have the same parent.");
        }

        Node curChild = startNode;
        while ((curChild != null) && (curChild != endNode)) {
            Node nextChild = curChild.getNextSibling();
            curChild.remove();
            curChild = nextChild;
        }
    }

    private final Node mFieldStart;
    private final Node mFieldSeparator;
    private final Node mFieldEnd;
    private boolean mIsLocal;
    private String mTarget;

    private static Pattern G_REGEX = Pattern.compile(
            "\\S+" +             // one or more non spaces HYPERLINK or other word in other languages
                    "\\s+" +             // one or more spaces
                    "(?:\"\"\\s+)?" +    // non capturing optional "" and one or more spaces, found in one of the customers files
                    "(\\\\l\\s+)?" +     // optional \l flag followed by one or more spaces
                    "\"" +               // one apostrophe
                    "([^\"]+)" +         // one or more chars except apostrophe (hyperlink target)
                    "\""                 // one closing apostrophe
    );
}

Property Getters/Setters Summary
DocumentBasegetDocument()→ inherited from Node
           Gets the document to which this node belongs.
intgetFieldType()→ inherited from FieldChar
           Returns the type of the field. The value of the property is FieldType integer constant.
FontgetFont()→ inherited from Inline
           Provides access to the font formatting of this object.
booleanisComposite()→ inherited from Node
           Returns true if this node can contain other nodes.
booleanisDeleteRevision()→ inherited from Inline
           Returns true if this object was deleted in Microsoft Word while change tracking was enabled.
booleanisDirty()→ inherited from FieldChar
voidisDirty(boolean value)
           Gets or sets whether the current result of the field is no longer correct (stale) due to other modifications made to the document.
booleanisFormatRevision()→ inherited from Inline
           Returns true if formatting of the object was changed in Microsoft Word while change tracking was enabled.
booleanisInsertRevision()→ inherited from Inline
           Returns true if this object was inserted in Microsoft Word while change tracking was enabled.
booleanisLocked()→ inherited from FieldChar
voidisLocked(boolean value)
           Gets or sets whether the parent field is locked (should not recalculate its result).
booleanisMoveFromRevision()→ inherited from Inline
           Returns true if this object was moved (deleted) in Microsoft Word while change tracking was enabled.
booleanisMoveToRevision()→ inherited from Inline
           Returns true if this object was moved (inserted) in Microsoft Word while change tracking was enabled.
NodegetNextSibling()→ inherited from Node
           Gets the node immediately following this node.
intgetNodeType()
           Returns NodeType.FIELD_START. The value of the property is NodeType integer constant.
CompositeNodegetParentNode()→ inherited from Node
           Gets the immediate parent of this node.
ParagraphgetParentParagraph()→ inherited from Inline
           Retrieves the parent Paragraph of this node.
NodegetPreviousSibling()→ inherited from Node
           Gets the node immediately preceding this node.
RangegetRange()→ inherited from Node
           Returns a Range object that represents the portion of a document that is contained in this node.
 
Method Summary
booleanaccept(DocumentVisitor visitor)
           Accepts a visitor.
NodedeepClone(boolean isCloneChildren)→ inherited from Node
          
CompositeNodegetAncestor(int ancestorType)→ inherited from Node
           Gets the first ancestor of the specified NodeType.
CompositeNodegetAncestor(java.lang.Class ancestorType)→ inherited from Node
           Gets the first ancestor of the specified object type.
FieldgetField()→ inherited from FieldChar
           Returns a field for the field char.
java.lang.StringgetText()→ inherited from SpecialChar
           Gets the special character that this node represents.
NodenextPreOrder(Node rootNode)→ inherited from Node
           Gets next node according to the pre-order tree traversal algorithm.
NodepreviousPreOrder(Node rootNode)→ inherited from Node
           Gets the previous node according to the pre-order tree traversal algorithm.
voidremove()→ inherited from Node
           Removes itself from the parent.
java.lang.StringtoString(SaveOptions saveOptions)→ inherited from Node
           Exports the content of the node into a string using the specified save options.
java.lang.StringtoString(int saveFormat)→ inherited from Node
           Exports the content of the node into a string in the specified format.
 

Property Getters/Setters Detail

getDocument

→ inherited from Node
public DocumentBase getDocument()
Gets the document to which this node belongs.

The node always belongs to a document even if it has just been created and not yet added to the tree, or if it has been removed from the tree.

Example:

Shows how to create a node and set its owning document.
// Open a file from disk
Document doc = new Document();

// Creating a new node of any type requires a document passed into the constructor
Paragraph para = new Paragraph(doc);

// The new paragraph node does not yet have a parent
System.out.println("Paragraph has no parent node: " + (para.getParentNode() == null));

// But the paragraph node knows its document
System.out.println("Both nodes' documents are the same: " + (para.getDocument() == doc));

// The fact that a node always belongs to a document allows us to access and modify 
// properties that reference the document-wide data such as styles or lists
para.getParagraphFormat().setStyleName("Heading 1");

// Now add the paragraph to the main text of the first section
doc.getFirstSection().getBody().appendChild(para);

// The paragraph node is now a child of the Body node
System.out.println("Paragraph has a parent node: " + (para.getParentNode() != null));

getFieldType

→ inherited from FieldChar
public int getFieldType()
Returns the type of the field. The value of the property is FieldType integer constant.

Example:

Demonstrates how to retrieve the field class from an existing FieldStart node in the document.
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

FieldDate field = (FieldDate) builder.insertField(FieldType.FIELD_DATE, true);
field.getFormat().setDateTimeFormat("dddd, MMMM dd, yyyy");
field.update();

FieldChar fieldStart = field.getStart();
Assert.assertEquals(FieldType.FIELD_DATE, fieldStart.getFieldType());
Assert.assertEquals(false, fieldStart.isDirty());
Assert.assertEquals(false, fieldStart.isLocked());

// Retrieve the facade object which represents the field in the document
field = (FieldDate) fieldStart.getField();

Assert.assertEquals(false, field.isLocked());
Assert.assertEquals(" DATE  \\@ \"dddd, MMMM dd, yyyy\"", field.getFieldCode());

// This updates only this field in the document
field.update();

getFont

→ inherited from Inline
public Font getFont()
Provides access to the font formatting of this object.

Example:

Shows how to construct an Aspose Words document node by node.
Document doc = new Document();

// A newly created blank document still comes one section, one body and one paragraph
// Calling this method will remove all those nodes to completely empty the document
doc.removeAllChildren();

// This document now has no composite nodes that content can be added to
// If we wish to edit it, we will need to repopulate its node collection,
// which we will start to do with by creating a new Section node
Section section = new Section(doc);

// Append the section to the document
doc.appendChild(section);

// Lets set some properties for the section
section.getPageSetup().setSectionStart(SectionStart.NEW_PAGE);
section.getPageSetup().setPaperSize(PaperSize.LETTER);

// The section that we created is empty, lets populate it. The section needs at least the Body node
Body body = new Body(doc);
section.appendChild(body);

// The body needs to have at least one paragraph
// Note that the paragraph has not yet been added to the document, 
// but we have to specify the parent document
// The parent document is needed so the paragraph can correctly work
// with styles and other document-wide information
Paragraph para = new Paragraph(doc);
body.appendChild(para);

// We can set some formatting for the paragraph
para.getParagraphFormat().setStyleName("Heading 1");
para.getParagraphFormat().setAlignment(ParagraphAlignment.CENTER);

// So far we have one empty paragraph in the document
// The document is valid and can be saved, but lets add some text before saving
// Create a new run of text and add it to our paragraph
Run run = new Run(doc);
run.setText("Hello World!");
run.getFont().setColor(Color.RED);
para.appendChild(run);

Assert.assertEquals("Hello World!" + ControlChar.SECTION_BREAK_CHAR, doc.getText());

doc.save(getArtifactsDir() + "Section.CreateFromScratch.docx");

isComposite

→ inherited from Node
public boolean isComposite()
Returns true if this node can contain other nodes. This method returns false as Node cannot have child nodes.

Example:

Shows how to efficiently visit all direct and indirect children of a composite node.
public void recurseAllNodes() throws Exception {
    Document doc = new Document(getMyDir() + "Paragraphs.docx");

    // Any node that can contain child nodes, such as the document itself, is composite
    Assert.assertTrue(doc.isComposite());

    // Invoke the recursive function that will go through and print all the child nodes of a composite node
    traverseAllNodes(doc, 0);
}

/// <summary>
/// Recursively traverses a node tree while printing the type of each node with an indent depending on depth as well as the contents of all inline nodes.
/// </summary>
@Test(enabled = false)
public void traverseAllNodes(CompositeNode parentNode, int depth) {
    // Loop through immediate children of a node
    for (Node childNode = parentNode.getFirstChild(); childNode != null; childNode = childNode.getNextSibling()) {
        System.out.println(MessageFormat.format("{0}{1}", String.format("    ", depth), Node.nodeTypeToString(childNode.getNodeType())));

        // Recurse into the node if it is a composite node
        if (childNode.isComposite()) {
            System.out.println();
            traverseAllNodes((CompositeNode) childNode, depth + 1);
        } else if (childNode instanceof Inline) {
            System.out.println(" - \"{childNode.GetText().Trim()}\"");
        } else {
            System.out.println();
        }
    }
}

isDeleteRevision

→ inherited from Inline
public boolean isDeleteRevision()
Returns true if this object was deleted in Microsoft Word while change tracking was enabled.

Example:

Shows how to view revision-related properties of Inline nodes.
Document doc = new Document(getMyDir() + "Revision runs.docx");

// This document has 6 revisions
Assert.assertEquals(doc.getRevisions().getCount(), 6);

// The parent node of a revision is the run that the revision concerns, which is an Inline node
Run run = (Run) doc.getRevisions().get(0).getParentNode();

// Get the parent paragraph
Paragraph firstParagraph = run.getParentParagraph();
RunCollection runs = firstParagraph.getRuns();

Assert.assertEquals(runs.getCount(), 6);

// The text in the run at index #2 was typed after revisions were tracked, so it will count as an insert revision
// The font was changed, so it will also be a format revision
Assert.assertTrue(runs.get(2).isInsertRevision());
Assert.assertTrue(runs.get(2).isFormatRevision());

// If one node was moved from one place to another while changes were tracked,
// the node will be placed at the departure location as a "move to revision",
// and a "move from revision" node will be left behind at the origin, in case we want to reject changes
// Highlighting text and dragging it to another place with the mouse and cut-and-pasting (but not copy-pasting) both count as "move revisions"
// The node with the "IsMoveToRevision" flag is the arrival of the move operation, and the node with the "IsMoveFromRevision" flag is the departure point
Assert.assertTrue(runs.get(1).isMoveToRevision());
Assert.assertTrue(runs.get(4).isMoveFromRevision());

// If an Inline node gets deleted while changes are being tracked, it will leave behind a node with the IsDeleteRevision flag set to true until changes are accepted
Assert.assertTrue(runs.get(5).isDeleteRevision());

isDirty/isDirty

→ inherited from FieldChar
public boolean isDirty() / public void isDirty(boolean value)
Gets or sets whether the current result of the field is no longer correct (stale) due to other modifications made to the document.

Example:

Demonstrates how to retrieve the field class from an existing FieldStart node in the document.
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

FieldDate field = (FieldDate) builder.insertField(FieldType.FIELD_DATE, true);
field.getFormat().setDateTimeFormat("dddd, MMMM dd, yyyy");
field.update();

FieldChar fieldStart = field.getStart();
Assert.assertEquals(FieldType.FIELD_DATE, fieldStart.getFieldType());
Assert.assertEquals(false, fieldStart.isDirty());
Assert.assertEquals(false, fieldStart.isLocked());

// Retrieve the facade object which represents the field in the document
field = (FieldDate) fieldStart.getField();

Assert.assertEquals(false, field.isLocked());
Assert.assertEquals(" DATE  \\@ \"dddd, MMMM dd, yyyy\"", field.getFieldCode());

// This updates only this field in the document
field.update();

isFormatRevision

→ inherited from Inline
public boolean isFormatRevision()
Returns true if formatting of the object was changed in Microsoft Word while change tracking was enabled.

Example:

Shows how to view revision-related properties of Inline nodes.
Document doc = new Document(getMyDir() + "Revision runs.docx");

// This document has 6 revisions
Assert.assertEquals(doc.getRevisions().getCount(), 6);

// The parent node of a revision is the run that the revision concerns, which is an Inline node
Run run = (Run) doc.getRevisions().get(0).getParentNode();

// Get the parent paragraph
Paragraph firstParagraph = run.getParentParagraph();
RunCollection runs = firstParagraph.getRuns();

Assert.assertEquals(runs.getCount(), 6);

// The text in the run at index #2 was typed after revisions were tracked, so it will count as an insert revision
// The font was changed, so it will also be a format revision
Assert.assertTrue(runs.get(2).isInsertRevision());
Assert.assertTrue(runs.get(2).isFormatRevision());

// If one node was moved from one place to another while changes were tracked,
// the node will be placed at the departure location as a "move to revision",
// and a "move from revision" node will be left behind at the origin, in case we want to reject changes
// Highlighting text and dragging it to another place with the mouse and cut-and-pasting (but not copy-pasting) both count as "move revisions"
// The node with the "IsMoveToRevision" flag is the arrival of the move operation, and the node with the "IsMoveFromRevision" flag is the departure point
Assert.assertTrue(runs.get(1).isMoveToRevision());
Assert.assertTrue(runs.get(4).isMoveFromRevision());

// If an Inline node gets deleted while changes are being tracked, it will leave behind a node with the IsDeleteRevision flag set to true until changes are accepted
Assert.assertTrue(runs.get(5).isDeleteRevision());

isInsertRevision

→ inherited from Inline
public boolean isInsertRevision()
Returns true if this object was inserted in Microsoft Word while change tracking was enabled.

Example:

Shows how to view revision-related properties of Inline nodes.
Document doc = new Document(getMyDir() + "Revision runs.docx");

// This document has 6 revisions
Assert.assertEquals(doc.getRevisions().getCount(), 6);

// The parent node of a revision is the run that the revision concerns, which is an Inline node
Run run = (Run) doc.getRevisions().get(0).getParentNode();

// Get the parent paragraph
Paragraph firstParagraph = run.getParentParagraph();
RunCollection runs = firstParagraph.getRuns();

Assert.assertEquals(runs.getCount(), 6);

// The text in the run at index #2 was typed after revisions were tracked, so it will count as an insert revision
// The font was changed, so it will also be a format revision
Assert.assertTrue(runs.get(2).isInsertRevision());
Assert.assertTrue(runs.get(2).isFormatRevision());

// If one node was moved from one place to another while changes were tracked,
// the node will be placed at the departure location as a "move to revision",
// and a "move from revision" node will be left behind at the origin, in case we want to reject changes
// Highlighting text and dragging it to another place with the mouse and cut-and-pasting (but not copy-pasting) both count as "move revisions"
// The node with the "IsMoveToRevision" flag is the arrival of the move operation, and the node with the "IsMoveFromRevision" flag is the departure point
Assert.assertTrue(runs.get(1).isMoveToRevision());
Assert.assertTrue(runs.get(4).isMoveFromRevision());

// If an Inline node gets deleted while changes are being tracked, it will leave behind a node with the IsDeleteRevision flag set to true until changes are accepted
Assert.assertTrue(runs.get(5).isDeleteRevision());

isLocked/isLocked

→ inherited from FieldChar
public boolean isLocked() / public void isLocked(boolean value)
Gets or sets whether the parent field is locked (should not recalculate its result).

Example:

Demonstrates how to retrieve the field class from an existing FieldStart node in the document.
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

FieldDate field = (FieldDate) builder.insertField(FieldType.FIELD_DATE, true);
field.getFormat().setDateTimeFormat("dddd, MMMM dd, yyyy");
field.update();

FieldChar fieldStart = field.getStart();
Assert.assertEquals(FieldType.FIELD_DATE, fieldStart.getFieldType());
Assert.assertEquals(false, fieldStart.isDirty());
Assert.assertEquals(false, fieldStart.isLocked());

// Retrieve the facade object which represents the field in the document
field = (FieldDate) fieldStart.getField();

Assert.assertEquals(false, field.isLocked());
Assert.assertEquals(" DATE  \\@ \"dddd, MMMM dd, yyyy\"", field.getFieldCode());

// This updates only this field in the document
field.update();

isMoveFromRevision

→ inherited from Inline
public boolean isMoveFromRevision()
Returns true if this object was moved (deleted) in Microsoft Word while change tracking was enabled.

Example:

Shows how to view revision-related properties of Inline nodes.
Document doc = new Document(getMyDir() + "Revision runs.docx");

// This document has 6 revisions
Assert.assertEquals(doc.getRevisions().getCount(), 6);

// The parent node of a revision is the run that the revision concerns, which is an Inline node
Run run = (Run) doc.getRevisions().get(0).getParentNode();

// Get the parent paragraph
Paragraph firstParagraph = run.getParentParagraph();
RunCollection runs = firstParagraph.getRuns();

Assert.assertEquals(runs.getCount(), 6);

// The text in the run at index #2 was typed after revisions were tracked, so it will count as an insert revision
// The font was changed, so it will also be a format revision
Assert.assertTrue(runs.get(2).isInsertRevision());
Assert.assertTrue(runs.get(2).isFormatRevision());

// If one node was moved from one place to another while changes were tracked,
// the node will be placed at the departure location as a "move to revision",
// and a "move from revision" node will be left behind at the origin, in case we want to reject changes
// Highlighting text and dragging it to another place with the mouse and cut-and-pasting (but not copy-pasting) both count as "move revisions"
// The node with the "IsMoveToRevision" flag is the arrival of the move operation, and the node with the "IsMoveFromRevision" flag is the departure point
Assert.assertTrue(runs.get(1).isMoveToRevision());
Assert.assertTrue(runs.get(4).isMoveFromRevision());

// If an Inline node gets deleted while changes are being tracked, it will leave behind a node with the IsDeleteRevision flag set to true until changes are accepted
Assert.assertTrue(runs.get(5).isDeleteRevision());

isMoveToRevision

→ inherited from Inline
public boolean isMoveToRevision()
Returns true if this object was moved (inserted) in Microsoft Word while change tracking was enabled.

Example:

Shows how to view revision-related properties of Inline nodes.
Document doc = new Document(getMyDir() + "Revision runs.docx");

// This document has 6 revisions
Assert.assertEquals(doc.getRevisions().getCount(), 6);

// The parent node of a revision is the run that the revision concerns, which is an Inline node
Run run = (Run) doc.getRevisions().get(0).getParentNode();

// Get the parent paragraph
Paragraph firstParagraph = run.getParentParagraph();
RunCollection runs = firstParagraph.getRuns();

Assert.assertEquals(runs.getCount(), 6);

// The text in the run at index #2 was typed after revisions were tracked, so it will count as an insert revision
// The font was changed, so it will also be a format revision
Assert.assertTrue(runs.get(2).isInsertRevision());
Assert.assertTrue(runs.get(2).isFormatRevision());

// If one node was moved from one place to another while changes were tracked,
// the node will be placed at the departure location as a "move to revision",
// and a "move from revision" node will be left behind at the origin, in case we want to reject changes
// Highlighting text and dragging it to another place with the mouse and cut-and-pasting (but not copy-pasting) both count as "move revisions"
// The node with the "IsMoveToRevision" flag is the arrival of the move operation, and the node with the "IsMoveFromRevision" flag is the departure point
Assert.assertTrue(runs.get(1).isMoveToRevision());
Assert.assertTrue(runs.get(4).isMoveFromRevision());

// If an Inline node gets deleted while changes are being tracked, it will leave behind a node with the IsDeleteRevision flag set to true until changes are accepted
Assert.assertTrue(runs.get(5).isDeleteRevision());

getNextSibling

→ inherited from Node
public Node getNextSibling()
Gets the node immediately following this node. If there is no next node, a null is returned.

Example:

Shows how to enumerate immediate child nodes of a composite node using NextSibling.
Document doc = new Document(getMyDir() + "Paragraphs.docx");

// Loop starting from the first child until we reach null
for (Node node = doc.getFirstSection().getBody().getFirstChild(); node != null; node = node.getNextSibling()) {
    // Output the types of the nodes that we come across
    System.out.println(Node.nodeTypeToString(node.getNodeType()));
}

Example:

Shows how to efficiently visit all direct and indirect children of a composite node.
public void recurseAllNodes() throws Exception {
    Document doc = new Document(getMyDir() + "Paragraphs.docx");

    // Any node that can contain child nodes, such as the document itself, is composite
    Assert.assertTrue(doc.isComposite());

    // Invoke the recursive function that will go through and print all the child nodes of a composite node
    traverseAllNodes(doc, 0);
}

/// <summary>
/// Recursively traverses a node tree while printing the type of each node with an indent depending on depth as well as the contents of all inline nodes.
/// </summary>
@Test(enabled = false)
public void traverseAllNodes(CompositeNode parentNode, int depth) {
    // Loop through immediate children of a node
    for (Node childNode = parentNode.getFirstChild(); childNode != null; childNode = childNode.getNextSibling()) {
        System.out.println(MessageFormat.format("{0}{1}", String.format("    ", depth), Node.nodeTypeToString(childNode.getNodeType())));

        // Recurse into the node if it is a composite node
        if (childNode.isComposite()) {
            System.out.println();
            traverseAllNodes((CompositeNode) childNode, depth + 1);
        } else if (childNode instanceof Inline) {
            System.out.println(" - \"{childNode.GetText().Trim()}\"");
        } else {
            System.out.println();
        }
    }
}

getNodeType

public int getNodeType()
Returns NodeType.FIELD_START. The value of the property is NodeType integer constant.

Example:

Shows how to efficiently visit all direct and indirect children of a composite node.
public void recurseAllNodes() throws Exception {
    Document doc = new Document(getMyDir() + "Paragraphs.docx");

    // Any node that can contain child nodes, such as the document itself, is composite
    Assert.assertTrue(doc.isComposite());

    // Invoke the recursive function that will go through and print all the child nodes of a composite node
    traverseAllNodes(doc, 0);
}

/// <summary>
/// Recursively traverses a node tree while printing the type of each node with an indent depending on depth as well as the contents of all inline nodes.
/// </summary>
@Test(enabled = false)
public void traverseAllNodes(CompositeNode parentNode, int depth) {
    // Loop through immediate children of a node
    for (Node childNode = parentNode.getFirstChild(); childNode != null; childNode = childNode.getNextSibling()) {
        System.out.println(MessageFormat.format("{0}{1}", String.format("    ", depth), Node.nodeTypeToString(childNode.getNodeType())));

        // Recurse into the node if it is a composite node
        if (childNode.isComposite()) {
            System.out.println();
            traverseAllNodes((CompositeNode) childNode, depth + 1);
        } else if (childNode instanceof Inline) {
            System.out.println(" - \"{childNode.GetText().Trim()}\"");
        } else {
            System.out.println();
        }
    }
}

getParentNode

→ inherited from Node
public CompositeNode getParentNode()
Gets the immediate parent of this node.

If a node has just been created and not yet added to the tree, or if it has been removed from the tree, the parent is null.

Example:

Shows how to access the parent node.
Document doc = new Document();

// Get the document's first paragraph and append a child node to it in the form of a run with text
Paragraph para = doc.getFirstSection().getBody().getFirstParagraph();

// When inserting a new node, the document that the node will belong to must be provided as an argument
Run run = new Run(doc, "Hello world!");
para.appendChild(run);

// The node lineage can be traced back to the document itself
Assert.assertEquals(para, run.getParentNode());
Assert.assertEquals(doc.getFirstSection().getBody(), para.getParentNode());
Assert.assertEquals(doc.getFirstSection(), doc.getFirstSection().getBody().getParentNode());
Assert.assertEquals(doc, doc.getFirstSection().getParentNode());

Example:

Shows how to create a node and set its owning document.
// Open a file from disk
Document doc = new Document();

// Creating a new node of any type requires a document passed into the constructor
Paragraph para = new Paragraph(doc);

// The new paragraph node does not yet have a parent
System.out.println("Paragraph has no parent node: " + (para.getParentNode() == null));

// But the paragraph node knows its document
System.out.println("Both nodes' documents are the same: " + (para.getDocument() == doc));

// The fact that a node always belongs to a document allows us to access and modify 
// properties that reference the document-wide data such as styles or lists
para.getParagraphFormat().setStyleName("Heading 1");

// Now add the paragraph to the main text of the first section
doc.getFirstSection().getBody().appendChild(para);

// The paragraph node is now a child of the Body node
System.out.println("Paragraph has a parent node: " + (para.getParentNode() != null));

getParentParagraph

→ inherited from Inline
public Paragraph getParentParagraph()
Retrieves the parent Paragraph of this node.

Example:

Shows how to view revision-related properties of Inline nodes.
Document doc = new Document(getMyDir() + "Revision runs.docx");

// This document has 6 revisions
Assert.assertEquals(doc.getRevisions().getCount(), 6);

// The parent node of a revision is the run that the revision concerns, which is an Inline node
Run run = (Run) doc.getRevisions().get(0).getParentNode();

// Get the parent paragraph
Paragraph firstParagraph = run.getParentParagraph();
RunCollection runs = firstParagraph.getRuns();

Assert.assertEquals(runs.getCount(), 6);

// The text in the run at index #2 was typed after revisions were tracked, so it will count as an insert revision
// The font was changed, so it will also be a format revision
Assert.assertTrue(runs.get(2).isInsertRevision());
Assert.assertTrue(runs.get(2).isFormatRevision());

// If one node was moved from one place to another while changes were tracked,
// the node will be placed at the departure location as a "move to revision",
// and a "move from revision" node will be left behind at the origin, in case we want to reject changes
// Highlighting text and dragging it to another place with the mouse and cut-and-pasting (but not copy-pasting) both count as "move revisions"
// The node with the "IsMoveToRevision" flag is the arrival of the move operation, and the node with the "IsMoveFromRevision" flag is the departure point
Assert.assertTrue(runs.get(1).isMoveToRevision());
Assert.assertTrue(runs.get(4).isMoveFromRevision());

// If an Inline node gets deleted while changes are being tracked, it will leave behind a node with the IsDeleteRevision flag set to true until changes are accepted
Assert.assertTrue(runs.get(5).isDeleteRevision());

getPreviousSibling

→ inherited from Node
public Node getPreviousSibling()
Gets the node immediately preceding this node. If there is no preceding node, a null is returned.

Example:

Shows how to use of methods of Node and CompositeNode to remove a section before the last section in the document.
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

// Create a second section by inserting a section break and add text to both sections
builder.writeln("Section 1 text.");
builder.insertBreak(BreakType.SECTION_BREAK_CONTINUOUS);
builder.writeln("Section 2 text.");

// Both sections are siblings of each other
Section lastSection = (Section) doc.getLastChild();
Section firstSection = (Section) lastSection.getPreviousSibling();

// Remove a section based on its sibling relationship with another section
if (lastSection.getPreviousSibling() != null)
    doc.removeChild(firstSection);

// The section we removed was the first one, leaving the document with only the second
Assert.assertEquals("Section 2 text.", doc.getText().trim());

getRange

→ inherited from Node
public Range getRange()
Returns a Range object that represents the portion of a document that is contained in this node.

Example:

Shows how to delete all characters of a range.
// Insert two sections into a blank document
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

builder.write("Section 1. ");
builder.insertBreak(BreakType.SECTION_BREAK_CONTINUOUS);
builder.write("Section 2.");

// Verify the whole text of the document
Assert.assertEquals("Section 1. \fSection 2.", doc.getText().trim());

// Delete the first section from the document
doc.getSections().get(0).getRange().delete();

// Check the first section was deleted by looking at the text of the whole document again
Assert.assertEquals("Section 2.", doc.getText().trim());

Method Detail

accept

public boolean accept(DocumentVisitor visitor)
              throws java.lang.Exception
Accepts a visitor.

Calls DocumentVisitor.visitFieldStart(com.aspose.words.FieldStart).

For more info see the Visitor design pattern.

Parameters:
visitor - The visitor that will visit the node.
Returns:
False if the visitor requested the enumeration to stop.

Example:

Shows how to work with a document's field collection.
public void fieldCollection() throws Exception {
    // Create a new document and insert some fields
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    builder.insertField(" DATE \\@ \"dddd, d MMMM yyyy\" ");
    builder.insertField(" TIME ");
    builder.insertField(" REVNUM ");
    builder.insertField(" AUTHOR  \"John Doe\" ");
    builder.insertField(" SUBJECT \"My Subject\" ");
    builder.insertField(" QUOTE \"Hello world!\" ");
    doc.updateFields();

    // Get the collection that contains all the fields in a document
    FieldCollection fields = doc.getRange().getFields();
    Assert.assertEquals(fields.getCount(), 6);

    // Iterate over the field collection and print contents and type of every field using a custom visitor implementation
    FieldVisitor fieldVisitor = new FieldVisitor();

    Iterator<Field> fieldEnumerator = fields.iterator();

    while (fieldEnumerator.hasNext()) {
        if (fieldEnumerator.next() != null) {
            Field currentField = fieldEnumerator.next();

            currentField.getStart().accept(fieldVisitor);
            if (currentField.getSeparator() != null) {
                currentField.getSeparator().accept(fieldVisitor);
            }
            currentField.getEnd().accept(fieldVisitor);
        } else {
            System.out.println("There are no fields in the document.");
        }
    }

    System.out.println(fieldVisitor.getText());

    // Get a field to remove itself
    fields.get(0).remove();
    Assert.assertEquals(fields.getCount(), 5);

    // Remove a field by reference
    Field lastField = fields.get(3);
    fields.remove(lastField);
    Assert.assertEquals(fields.getCount(), 4);

    // Remove a field by index
    fields.removeAt(2);
    Assert.assertEquals(fields.getCount(), 3);

    // Remove all fields from the document
    fields.clear();
    Assert.assertEquals(fields.getCount(), 0);
}

/// <summary>
/// Document visitor implementation that prints field info.
/// </summary>
public static class FieldVisitor extends DocumentVisitor {
    public FieldVisitor() {
        mBuilder = new StringBuilder();
    }

    /// <summary>
    /// Gets the plain text of the document that was accumulated by the visitor.
    /// </summary>
    public String getText() {
        return mBuilder.toString();
    }

    /// <summary>
    /// Called when a FieldStart node is encountered in the document.
    /// </summary>
    public int visitFieldStart(final FieldStart fieldStart) {
        mBuilder.append("Found field: " + fieldStart.getFieldType() + "\r\n");
        mBuilder.append("\tField code: " + fieldStart.getField().getFieldCode() + "\r\n");
        mBuilder.append("\tDisplayed as: " + fieldStart.getField().getResult() + "\r\n");

        return VisitorAction.CONTINUE;
    }

    /// <summary>
    /// Called when a FieldSeparator node is encountered in the document.
    /// </summary>
    public int visitFieldSeparator(final FieldSeparator fieldSeparator) {
        mBuilder.append("\tFound separator: " + fieldSeparator.getText() + "\r\n");

        return VisitorAction.CONTINUE;
    }

    /// <summary>
    /// Called when a FieldEnd node is encountered in the document.
    /// </summary>
    public int visitFieldEnd(final FieldEnd fieldEnd) {
        mBuilder.append("End of field: " + fieldEnd.getFieldType() + "\r\n");

        return VisitorAction.CONTINUE;
    }

    private StringBuilder mBuilder;
}

deepClone

→ inherited from Node
public Node deepClone(boolean isCloneChildren)

Example:

Shows how to clone composite nodes with and without their child nodes.
Document doc = new Document();
Paragraph para = doc.getFirstSection().getBody().getFirstParagraph();
para.appendChild(new Run(doc, "Hello world!"));

// Clone the paragraph and the child nodes
Node cloneWithChildren = para.deepClone(true);

Assert.assertTrue(((CompositeNode) cloneWithChildren).hasChildNodes());
Assert.assertEquals("Hello world!", cloneWithChildren.getText().trim());

// Clone the paragraph without its clild nodes
Node cloneWithoutChildren = para.deepClone(false);

Assert.assertFalse(((CompositeNode) cloneWithoutChildren).hasChildNodes());
Assert.assertEquals("", cloneWithoutChildren.getText().trim());

getAncestor

→ inherited from Node
public CompositeNode getAncestor(int ancestorType)
Gets the first ancestor of the specified NodeType.
Parameters:
ancestorType - A NodeType value. The node type of the ancestor to retrieve.
Returns:
The ancestor of the specified type or null if no ancestor of this type was found.

Example:

Shows how to find out if a table contains another table or if the table itself is nested inside another table.
public void calculateDepthOfNestedTables() throws Exception {
    Document doc = new Document(getMyDir() + "Nested tables.docx");
    NodeCollection tables = doc.getChildNodes(NodeType.TABLE, true);

    for (int i = 0; i < tables.getCount(); i++) {
        // First lets find if any cells in the table have tables themselves as children
        int count = getChildTableCount((Table) tables.get(i));
        System.out.println(MessageFormat.format("Table #{0} has {1} tables directly within its cells", i, count));

        // Now let's try the other way around, lets try find if the table is nested inside another table and at what depth
        int tableDepth = getNestedDepthOfTable((Table) tables.get(i));

        if (tableDepth > 0)
            System.out.println(MessageFormat.format("Table #{0} is nested inside another table at depth of {1}", i, tableDepth));
        else
            System.out.println(MessageFormat.format("Table #{0} is a non nested table (is not a child of another table)", i));
    }
}

/**
 * Calculates what level a table is nested inside other tables.
 *
 * @returns An integer containing the level the table is nested at.
 * 0 = Table is not nested inside any other table
 * 1 = Table is nested within one parent table
 * 2 = Table is nested within two parent tables etc..
 */
private static int getNestedDepthOfTable(final Table table) {
    int depth = 0;

    int type = table.getNodeType();
    // The parent of the table will be a Cell, instead attempt to find a grandparent that is of type Table
    Node parent = table.getAncestor(table.getNodeType());

    while (parent != null) {
        // Every time we find a table a level up we increase the depth counter and then try to find an
        // ancestor of type table from the parent
        depth++;
        parent = parent.getAncestor(Table.class);
    }

    return depth;
}

/**
 * Determines if a table contains any immediate child table within its cells.
 * Does not recursively traverse through those tables to check for further tables.
 *
 * @returns Returns true if at least one child cell contains a table.
 * Returns false if no cells in the table contains a table.
 */
private static int getChildTableCount(final Table table) {
    int tableCount = 0;
    // Iterate through all child rows in the table
    for (Row row : table.getRows()) {
        // Iterate through all child cells in the row
        for (Cell cell : row.getCells()) {
            // Retrieve the collection of child tables of this cell
            TableCollection childTables = cell.getTables();

            // If this cell has a table as a child then return true
            if (childTables.getCount() > 0) tableCount++;
        }
    }

    // No cell contains a table
    return tableCount;
}

getAncestor

→ inherited from Node
public CompositeNode getAncestor(java.lang.Class ancestorType)
Gets the first ancestor of the specified object type.

The ancestor type matches if it is equal to ancestorType or derived from ancestorType.

Parameters:
ancestorType - The object type of the ancestor to retrieve.
Returns:
The ancestor of the specified type or null if no ancestor of this type was found.

Example:

Shows how to find out if a table contains another table or if the table itself is nested inside another table.
public void calculateDepthOfNestedTables() throws Exception {
    Document doc = new Document(getMyDir() + "Nested tables.docx");
    NodeCollection tables = doc.getChildNodes(NodeType.TABLE, true);

    for (int i = 0; i < tables.getCount(); i++) {
        // First lets find if any cells in the table have tables themselves as children
        int count = getChildTableCount((Table) tables.get(i));
        System.out.println(MessageFormat.format("Table #{0} has {1} tables directly within its cells", i, count));

        // Now let's try the other way around, lets try find if the table is nested inside another table and at what depth
        int tableDepth = getNestedDepthOfTable((Table) tables.get(i));

        if (tableDepth > 0)
            System.out.println(MessageFormat.format("Table #{0} is nested inside another table at depth of {1}", i, tableDepth));
        else
            System.out.println(MessageFormat.format("Table #{0} is a non nested table (is not a child of another table)", i));
    }
}

/**
 * Calculates what level a table is nested inside other tables.
 *
 * @returns An integer containing the level the table is nested at.
 * 0 = Table is not nested inside any other table
 * 1 = Table is nested within one parent table
 * 2 = Table is nested within two parent tables etc..
 */
private static int getNestedDepthOfTable(final Table table) {
    int depth = 0;

    int type = table.getNodeType();
    // The parent of the table will be a Cell, instead attempt to find a grandparent that is of type Table
    Node parent = table.getAncestor(table.getNodeType());

    while (parent != null) {
        // Every time we find a table a level up we increase the depth counter and then try to find an
        // ancestor of type table from the parent
        depth++;
        parent = parent.getAncestor(Table.class);
    }

    return depth;
}

/**
 * Determines if a table contains any immediate child table within its cells.
 * Does not recursively traverse through those tables to check for further tables.
 *
 * @returns Returns true if at least one child cell contains a table.
 * Returns false if no cells in the table contains a table.
 */
private static int getChildTableCount(final Table table) {
    int tableCount = 0;
    // Iterate through all child rows in the table
    for (Row row : table.getRows()) {
        // Iterate through all child cells in the row
        for (Cell cell : row.getCells()) {
            // Retrieve the collection of child tables of this cell
            TableCollection childTables = cell.getTables();

            // If this cell has a table as a child then return true
            if (childTables.getCount() > 0) tableCount++;
        }
    }

    // No cell contains a table
    return tableCount;
}

getField

→ inherited from FieldChar
public Field getField()
Returns a field for the field char. A new Field object is created each time the method is called.
Returns:
A field for the field char.

Example:

Demonstrates how to retrieve the field class from an existing FieldStart node in the document.
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

FieldDate field = (FieldDate) builder.insertField(FieldType.FIELD_DATE, true);
field.getFormat().setDateTimeFormat("dddd, MMMM dd, yyyy");
field.update();

FieldChar fieldStart = field.getStart();
Assert.assertEquals(FieldType.FIELD_DATE, fieldStart.getFieldType());
Assert.assertEquals(false, fieldStart.isDirty());
Assert.assertEquals(false, fieldStart.isLocked());

// Retrieve the facade object which represents the field in the document
field = (FieldDate) fieldStart.getField();

Assert.assertEquals(false, field.isLocked());
Assert.assertEquals(" DATE  \\@ \"dddd, MMMM dd, yyyy\"", field.getFieldCode());

// This updates only this field in the document
field.update();

getText

→ inherited from SpecialChar
public java.lang.String getText()
Gets the special character that this node represents.
Returns:
The string that contains the character that this node represents.

nextPreOrder

→ inherited from Node
public Node nextPreOrder(Node rootNode)
Gets next node according to the pre-order tree traversal algorithm.
Parameters:
rootNode - The top node (limit) of traversal.
Returns:
Next node in pre-order order. Null if reached the rootNode.

Example:

Shows how to delete all images from a document using pre-order tree traversal.
Document doc = new Document(getMyDir() + "Images.docx");
Assert.assertEquals(doc.getChildNodes(NodeType.SHAPE, true).getCount(), 10);

Node curNode = doc;
while (curNode != null) {
    Node nextNode = curNode.nextPreOrder(doc);

    if (curNode.previousPreOrder(doc) != null && nextNode != null) {
        Assert.assertEquals(curNode, nextNode.previousPreOrder(doc));
    }

    if (curNode.getNodeType() == NodeType.SHAPE) {
        Shape shape = (Shape) curNode;

        // Several shape types can have an image including image shapes and OLE objects
        if (shape.hasImage()) {
            shape.remove();
        }
    }

    curNode = nextNode;
}

// The only remaining shape doesn't have an image
Assert.assertEquals(1, doc.getChildNodes(NodeType.SHAPE, true).getCount());
Assert.assertFalse(((Shape) doc.getChild(NodeType.SHAPE, 0, true)).hasImage());

previousPreOrder

→ inherited from Node
public Node previousPreOrder(Node rootNode)
Gets the previous node according to the pre-order tree traversal algorithm.
Parameters:
rootNode - The top node (limit) of traversal.
Returns:
Previous node in pre-order order. Null if reached the rootNode.

Example:

Shows how to delete all images from a document using pre-order tree traversal.
Document doc = new Document(getMyDir() + "Images.docx");
Assert.assertEquals(doc.getChildNodes(NodeType.SHAPE, true).getCount(), 10);

Node curNode = doc;
while (curNode != null) {
    Node nextNode = curNode.nextPreOrder(doc);

    if (curNode.previousPreOrder(doc) != null && nextNode != null) {
        Assert.assertEquals(curNode, nextNode.previousPreOrder(doc));
    }

    if (curNode.getNodeType() == NodeType.SHAPE) {
        Shape shape = (Shape) curNode;

        // Several shape types can have an image including image shapes and OLE objects
        if (shape.hasImage()) {
            shape.remove();
        }
    }

    curNode = nextNode;
}

// The only remaining shape doesn't have an image
Assert.assertEquals(1, doc.getChildNodes(NodeType.SHAPE, true).getCount());
Assert.assertFalse(((Shape) doc.getChild(NodeType.SHAPE, 0, true)).hasImage());

remove

→ inherited from Node
public void remove()
Removes itself from the parent.

Example:

Shows how to delete all images from a document.
Document doc = new Document(getMyDir() + "Images.docx");
Assert.assertEquals(doc.getChildNodes(NodeType.SHAPE, true).getCount(), 10);

// Here we get all shapes from the document node, but you can do this for any smaller
// node too, for example delete shapes from a single section or a paragraph
NodeCollection shapes = doc.getChildNodes(NodeType.SHAPE, true);

// We cannot delete shape nodes while we enumerate through the collection
// One solution is to add nodes that we want to delete to a temporary array and delete afterwards
ArrayList shapesToDelete = new ArrayList();
for (Shape shape : (Iterable<Shape>) shapes) {
    // Several shape types can have an image including image shapes and OLE objects
    if (shape.hasImage()) {
        shapesToDelete.add(shape);
    }
}

// Now we can delete shapes
for (Shape shape : (Iterable<Shape>) shapesToDelete)
    shape.remove();

// The only remaining shape doesn't have an image
Assert.assertEquals(1, doc.getChildNodes(NodeType.SHAPE, true).getCount());
Assert.assertFalse(((Shape) doc.getChild(NodeType.SHAPE, 0, true)).hasImage());

Example:

Shows how to remove all nodes of a specific type from a composite node.
Document doc = new Document(getMyDir() + "Tables.docx");

Assert.assertEquals(2, doc.getChildNodes(NodeType.TABLE, true).getCount());

// Select the first child node in the body
Node curNode = doc.getFirstSection().getBody().getFirstChild();

while (curNode != null) {
    // Save the next sibling node as a variable in case we want to move to it after deleting this node
    Node nextNode = curNode.getNextSibling();

    // A section body can contain Paragraph and Table nodes
    // If the node is a Table, remove it from the parent
    if (curNode.getNodeType() == NodeType.TABLE) {
        curNode.remove();
    }

    // Continue going through child nodes until null (no more siblings) is reached
    curNode = nextNode;
}

Assert.assertEquals(0, doc.getChildNodes(NodeType.TABLE, true).getCount());

toString

→ inherited from Node
public java.lang.String toString(SaveOptions saveOptions)
               throws java.lang.Exception
Exports the content of the node into a string using the specified save options.
Parameters:
saveOptions - Specifies the options that control how the node is saved.
Returns:
The content of the node in the specified format.

Example:

Exports the content of a node to String in HTML format.
Document doc = new Document(getMyDir() + "Document.docx");

// Extract the last paragraph in the document to convert to HTML
Node node = doc.getLastSection().getBody().getLastParagraph();

// When ToString is called using the html SaveFormat overload then the node is converted directly to html
Assert.assertEquals("<p style=\"margin-top:0pt; margin-bottom:8pt; line-height:108%; font-size:12pt\">" +
        "<span style=\"font-family:'Times New Roman'\">Hello World!</span>" +
        "</p>", node.toString(SaveFormat.HTML));

// We can also modify the result of this conversion using a SaveOptions object
HtmlSaveOptions saveOptions = new HtmlSaveOptions();
saveOptions.setExportRelativeFontSize(true);

Assert.assertEquals("<p style=\"margin-top:0pt; margin-bottom:8pt; line-height:108%\">" +
        "<span style=\"font-family:'Times New Roman'\">Hello World!</span>" +
        "</p>", node.toString(saveOptions));

toString

→ inherited from Node
public java.lang.String toString(int saveFormat)
               throws java.lang.Exception
Exports the content of the node into a string in the specified format.
Returns:
The content of the node in the specified format.
Parameters:
saveFormat - A SaveFormat value.

Example:

Shows how to extract the label of each paragraph in a list as a value or a String.
Document doc = new Document(getMyDir() + "Rendering.docx");
doc.updateListLabels();
int listParaCount = 1;

for (Paragraph paragraph : (Iterable<Paragraph>) doc.getChildNodes(NodeType.PARAGRAPH, true)) {
    // Find if we have the paragraph list. In our document our list uses plain arabic numbers,
    // which start at three and ends at six
    if (paragraph.getListFormat().isListItem()) {
        System.out.println(MessageFormat.format("List item paragraph #{0}", listParaCount));

        // This is the text we get when actually getting when we output this node to text format
        // The list labels are not included in this text output. Trim any paragraph formatting characters
        String paragraphText = paragraph.toString(SaveFormat.TEXT).trim();
        System.out.println("Exported Text: " + paragraphText);

        ListLabel label = paragraph.getListLabel();
        // This gets the position of the paragraph in current level of the list. If we have a list with multiple level then this
        // will tell us what position it is on that particular level
        System.out.println("\tNumerical Id: " + label.getLabelValue());

        // Combine them together to include the list label with the text in the output
        System.out.println("\tList label combined with text: " + label.getLabelString() + " " + paragraphText);

        listParaCount++;
    }
}

Example:

Exports the content of a node to String in HTML format.
Document doc = new Document(getMyDir() + "Document.docx");

// Extract the last paragraph in the document to convert to HTML
Node node = doc.getLastSection().getBody().getLastParagraph();

// When ToString is called using the html SaveFormat overload then the node is converted directly to html
Assert.assertEquals("<p style=\"margin-top:0pt; margin-bottom:8pt; line-height:108%; font-size:12pt\">" +
        "<span style=\"font-family:'Times New Roman'\">Hello World!</span>" +
        "</p>", node.toString(SaveFormat.HTML));

// We can also modify the result of this conversion using a SaveOptions object
HtmlSaveOptions saveOptions = new HtmlSaveOptions();
saveOptions.setExportRelativeFontSize(true);

Assert.assertEquals("<p style=\"margin-top:0pt; margin-bottom:8pt; line-height:108%\">" +
        "<span style=\"font-family:'Times New Roman'\">Hello World!</span>" +
        "</p>", node.toString(saveOptions));

Example:

Shows the difference between calling the GetText and ToString methods on a node.
Document doc = new Document();

// Enter a field into the document
DocumentBuilder builder = new DocumentBuilder(doc);
builder.insertField("MERGEFIELD Field");

// GetText will retrieve all field codes and special characters
Assert.assertEquals("\u0013MERGEFIELD Field\u0014«Field»\u0015\f", doc.getText());

// ToString will give us the plaintext version of the document in the save format we put into the parameter
Assert.assertEquals("«Field»\r\n", doc.toString(SaveFormat.TEXT));

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