export class RichEditDocumentBase

get bookmarks(): BookmarkCollection<Bookmark>

get fields(): FieldCollection

var doInAllSubDocuments = true;
var updateTocFields = true;
var options = new DevExpress.RichEdit.UpdateFieldsOptions(doInAllSubDocuments, updateTocFields);
richEdit.document.fields.updateAllFields(function() {
    console.log('Updated');
}, options);

get fonts(): FontCollection

//reduces the document's font collection to the specified fonts
var myFonts = ['Arial', 'Calibri'];
richEdit.document.fonts.getAllFontNames().forEach(fontName => 
    myFonts.find(myFontName => 
        myFontName == fontName) ? null : richEdit.document.fonts.getByName(fontName).delete());

get hyperlinks(): HyperlinkCollection

var text = "Visit our site";
var url = "https://www.devexpress.com/";
var tooltip = "DevExpress site";

richEdit.beginUpdate();
richEdit.history.beginTransaction();
var subDocument = richEdit.selection.activeSubDocument;

var position = richEdit.selection.active;
position = subDocument.insertParagraph(position).interval.end;
position = subDocument.hyperlinks.create(position, new DevExpress.RichEdit.HyperlinkInfo(text, url, "", tooltip)).interval.end;
subDocument.insertParagraph(position);

richEdit.endUpdate();
richEdit.history.endTransaction();

get interval(): Interval

get isProtected(): boolean

function ProtectDocument() {
   if (!richEdit.document.isProtected) {
       const password = window.prompt('enter new password(optional):', '');
   if (password != undefined && password != null)
       richEdit.document.protect(password);
   }
}

function UnprotectDocument() {
   const password = window.prompt('enter password:', '');
   if (password != undefined && password != null) {
       if (richEdit.document.checkProtectionPassword(password))
           richEdit.document.unprotect();
       else
           window.alert('The password incorrect!');
   }
}

get length(): number

var subDocument = richEdit.document.subDocuments.main;
subDocument.insertText(subDocument.length - 1, 'text'); 
// or
richEdit.document.insertText(richEdit.document.length - 1, 'text');

get lists(): ListCollection

get paragraphs(): ParagraphCollection

get rangePermissions(): RangePermissionCollection

get sections(): SectionCollection

var createHeaderIfNotExist = true;
var section = richEdit.document.sections.getByIndex(0);
var subDocument = section.getHeader(DevExpress.RichEdit.HeaderFooterType.Primary, createHeaderIfNotExist);
var position = 0;
subDocument.insertText(position, 'text');

get subDocuments(): SubDocumentCollection<SubDocument>

get tables(): TableCollection

var columnCount = 5;
var rowCount = 5;
var subDocument = richEdit.selection.activeSubDocument;
var position = richEdit.selection.active;
var table = subDocument.tables.create(position, columnCount, rowCount);

checkProtectionPassword(
    password: string
): boolean

function ProtectDocument() {
   if (!richEdit.document.isProtected) {
       const password = window.prompt('enter new password(optional):', '');
   if (password != undefined && password != null)
       richEdit.document.protect(password);
   }
}

function UnprotectDocument() {
   const password = window.prompt('enter password:', '');
   if (password != undefined && password != null) {
       if (richEdit.document.checkProtectionPassword(password))
           richEdit.document.unprotect();
       else
           window.alert('The password incorrect!');
   }
}

deleteText(
    interval: IInterval
): void

richEdit.document.deleteText(new DevExpress.RichEdit.Interval(0, 5));

getCharacterProperties(
    interval: IInterval
): CharacterProperties

getDefaultCharacterProperties(): CharacterProperties

const charProps = richEdit.document.getDefaultCharacterProperties();
charProps.fontName = "Segoe UI";
richEdit.document.setDefaultCharacterProperties(charProps);

getParagraphProperties(
    interval: IInterval
): ParagraphProperties

getText(
    interval?: Interval
): string

var mainSubDocumentText = richEdit.document.getText();

insertColumnBreak(
    position: number
): Interval

insertLineBreak(
    position: number
): Interval

insertPageBreak(
    position: number
): Interval

insertParagraph(
    position: number
): Paragraph

var subDocument = richEdit.selection.activeSubDocument;
var position = richEdit.selection.active;
var templateText = '[Type your text here]';

richEdit.beginUpdate();
richEdit.history.beginTransaction();

position = subDocument.insertParagraph(position).interval.end;
position = subDocument.insertParagraph(position).interval.end;
position = subDocument.insertText(position, 'Dear Mr Stanley,').end;
position = subDocument.insertParagraph(position).interval.end;
var tmpTextInterval = subDocument.insertText(position, templateText);
position = tmpTextInterval.end;
position = subDocument.insertParagraph(position).interval.end;

richEdit.endUpdate();
richEdit.history.endTransaction();

richEdit.selection.setSelection(tmpTextInterval);
richEdit.focus();

insertPicture(
    position: number,
    base64: string,
    size?: Size,
    callback?: (interval: Interval) => void
): void

var subDocument = richEdit.selection.activeSubDocument;
var position = richEdit.selection.active;
var image = "your-image-URL"; // base64 or url
var width = richEdit.unitConverter.pixelsToTwips(100);
var height = richEdit.unitConverter.pixelsToTwips(100);
var size = new DevExpress.RichEdit.Size(width, height);
subDocument.insertPicture(position, image, size, function(interval) { console.log("Picture loaded"); });

insertSectionBreak(
    position: number,
    type: SectionBreakType
): Section

insertText(
    position: number,
    text: string
): Interval

var subDocument = richEdit.selection.activeSubDocument;
var position = richEdit.selection.active;
subDocument.insertText(position, 'text');

var subDocument = richEdit.selection.activeSubDocument;
var position = subDocument.length - 1;
subDocument.insertText(position, 'text');

var createHeaderIfNotExist = true;
var section = richEdit.document.sections.getByIndex(0);
var subDocument = section.getHeader(DevExpress.RichEdit.HeaderFooterType.Primary, createHeaderIfNotExist);
var position = 0;
subDocument.insertText(position, 'text');

protect(
    password: string
): void

function ProtectDocument() {
   if (!richEdit.document.isProtected) {
       const password = window.prompt('enter new password(optional):', '');
   if (password != undefined && password != null)
       richEdit.document.protect(password);
   }
}

function UnprotectDocument() {
   const password = window.prompt('enter password:', '');
   if (password != undefined && password != null) {
       if (richEdit.document.checkProtectionPassword(password))
           richEdit.document.unprotect();
       else
           window.alert('The password incorrect!');
   }
}

setCharacterProperties(
    interval: IInterval,
    characterProperties: ICharacterProperties
): void

var subDocument = richEdit.selection.activeSubDocument;
var position = richEdit.selection.active;
var characterProperties = {
    bold: true,
    fontName: richEdit.document.fonts.getByIndex(0).name,
    highlightColor: "ffff00",
};

richEdit.history.beginTransaction();
richEdit.beginUpdate();
var interval = subDocument.insertText(position, "text");
subDocument.setCharacterProperties(interval, characterProperties);
richEdit.endUpdate();
richEdit.history.endTransaction();

setDefaultCharacterProperties(
    characterProperties: ICharacterProperties
): void

const charProps = richEdit.document.getDefaultCharacterProperties();
charProps.fontName = "Segoe UI";
richEdit.document.setDefaultCharacterProperties(charProps);

setParagraphProperties(
    interval: IInterval,
    paragraphProperties: IParagraphProperties
): void

unprotect(): void

function ProtectDocument() {
   if (!richEdit.document.isProtected) {
       const password = window.prompt('enter new password(optional):', '');
   if (password != undefined && password != null)
       richEdit.document.protect(password);
   }
}

function UnprotectDocument() {
   const password = window.prompt('enter password:', '');
   if (password != undefined && password != null) {
       if (richEdit.document.checkProtectionPassword(password))
           richEdit.document.unprotect();
       else
           window.alert('The password incorrect!');
   }
}