Word.StyleCollection class

Contains a collection of Word.Style objects.

Extends

Remarks

[ API set: WordApi 1.5 ]

Properties

context

The request context associated with the object. This connects the add-in's process to the Office host application's process.

items

Gets the loaded child items in this collection.

Methods

getByName(name)

Get the style object by its name.

getByNameOrNullObject(name)

If the corresponding style doesn't exist, then this method returns an object with its isNullObject property set to true.

getCount()

Gets the number of the styles in the collection.

getItem(index)

Gets a style object by its index in the collection.

load(options)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(propertyNames)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(propertyNamesAndPaths)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

toJSON()

Overrides the JavaScript toJSON() method in order to provide more useful output when an API object is passed to JSON.stringify(). (JSON.stringify, in turn, calls the toJSON method of the object that is passed to it.) Whereas the original Word.StyleCollection object is an API object, the toJSON method returns a plain JavaScript object (typed as Word.Interfaces.StyleCollectionData) that contains an "items" array with shallow copies of any loaded properties from the collection's items.

track()

Track the object for automatic adjustment based on surrounding changes in the document. This call is a shorthand for context.trackedObjects.add(thisObject). If you're using this object across .sync calls and outside the sequential execution of a ".run" batch, and get an "InvalidObjectPath" error when setting a property or invoking a method on the object, you need to add the object to the tracked object collection when the object was first created. If this object is part of a collection, you should also track the parent collection.

untrack()

Release the memory associated with this object, if it has previously been tracked. This call is shorthand for context.trackedObjects.remove(thisObject). Having many tracked objects slows down the host application, so please remember to free any objects you add, once you're done using them. You'll need to call context.sync() before the memory release takes effect.

Property Details

context

The request context associated with the object. This connects the add-in's process to the Office host application's process.

context: RequestContext;

Property Value

items

Gets the loaded child items in this collection.

readonly items: Word.Style[];

Property Value

Method Details

getByName(name)

Get the style object by its name.

getByName(name: string): Word.Style;

Parameters

name

string

Required. The style name.

Returns

Remarks

[ API set: WordApi 1.5 ]

getByNameOrNullObject(name)

If the corresponding style doesn't exist, then this method returns an object with its isNullObject property set to true.

getByNameOrNullObject(name: string): Word.Style;

Parameters

name

string

Required. The style name.

Returns

Remarks

[ API set: WordApi 1.5 ]

Examples

// Link to full sample: https://raw.githubusercontent.com/OfficeDev/office-js-snippets/prod/samples/word/50-document/manage-styles.yaml

// Adds a new style.
await Word.run(async (context) => {
  const newStyleName = $("#new-style-name").val() as string;
  if (newStyleName == "") {
    console.warn("Enter a style name to add.");
    return;
  }

  const style = context.document.getStyles().getByNameOrNullObject(newStyleName);
  style.load();
  await context.sync();

  if (!style.isNullObject) {
    console.warn(
      `There's an existing style with the same name '${newStyleName}'! Please provide another style name.`
    );
    return;
  }

  const newStyleType = ($("#new-style-type").val() as unknown) as Word.StyleType;
  context.document.addStyle(newStyleName, newStyleType);
  await context.sync();
  
  console.log(newStyleName + " has been added to the style list.");
});

getCount()

Gets the number of the styles in the collection.

getCount(): OfficeExtension.ClientResult<number>;

Returns

Remarks

[ API set: WordApi 1.5 ]

Examples

// Link to full sample: https://raw.githubusercontent.com/OfficeDev/office-js-snippets/prod/samples/word/50-document/manage-styles.yaml

// Gets the number of styles.
await Word.run(async (context) => {
  const styles = context.document.getStyles();
  const count = styles.getCount();
  await context.sync();

  console.log(`Number of styles: ${count.value}`);
});

getItem(index)

Gets a style object by its index in the collection.

getItem(index: number): Word.Style;

Parameters

index

number

A number that identifies the index location of a style object.

Returns

Remarks

[ API set: WordApi 1.5 ]

load(options)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(options?: Word.Interfaces.StyleCollectionLoadOptions & Word.Interfaces.CollectionLoadOptions): Word.StyleCollection;

Parameters

options

Word.Interfaces.StyleCollectionLoadOptions & Word.Interfaces.CollectionLoadOptions

Provides options for which properties of the object to load.

Returns

load(propertyNames)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(propertyNames?: string | string[]): Word.StyleCollection;

Parameters

propertyNames

string | string[]

A comma-delimited string or an array of strings that specify the properties to load.

Returns

load(propertyNamesAndPaths)

Queues up a command to load the specified properties of the object. You must call context.sync() before reading the properties.

load(propertyNamesAndPaths?: OfficeExtension.LoadOption): Word.StyleCollection;

Parameters

propertyNamesAndPaths
OfficeExtension.LoadOption

propertyNamesAndPaths.select is a comma-delimited string that specifies the properties to load, and propertyNamesAndPaths.expand is a comma-delimited string that specifies the navigation properties to load.

Returns

toJSON()

Overrides the JavaScript toJSON() method in order to provide more useful output when an API object is passed to JSON.stringify(). (JSON.stringify, in turn, calls the toJSON method of the object that is passed to it.) Whereas the original Word.StyleCollection object is an API object, the toJSON method returns a plain JavaScript object (typed as Word.Interfaces.StyleCollectionData) that contains an "items" array with shallow copies of any loaded properties from the collection's items.

toJSON(): Word.Interfaces.StyleCollectionData;

Returns

track()

Track the object for automatic adjustment based on surrounding changes in the document. This call is a shorthand for context.trackedObjects.add(thisObject). If you're using this object across .sync calls and outside the sequential execution of a ".run" batch, and get an "InvalidObjectPath" error when setting a property or invoking a method on the object, you need to add the object to the tracked object collection when the object was first created. If this object is part of a collection, you should also track the parent collection.

track(): Word.StyleCollection;

Returns

untrack()

Release the memory associated with this object, if it has previously been tracked. This call is shorthand for context.trackedObjects.remove(thisObject). Having many tracked objects slows down the host application, so please remember to free any objects you add, once you're done using them. You'll need to call context.sync() before the memory release takes effect.

untrack(): Word.StyleCollection;

Returns