Once the database connection has been established, the code used in the example first uses the Connection.createObject call to create a Statement object. Once initialization is complete, the text frame is finally inserted in the text document using a call from insertTextContent. It first creates the com.sun.star.frame.Desktop service and then displays the supported properties and methods in message boxes. Note: createUnoService creates an object which can be used universally. LibreOffice Basic predefines several constants. Note - VBA : Compatibility between OpenOffice.org Basic and VBA relates to the OpenOffice.org Basic language as well as the runtime library. Like bubbles, the variables gradually migrate to the right position. However, as a result, the same character value can represent different characters in different languages. There, an error is triggered and program implementation terminated if a corresponding assignment is executed. In all other instances (that is, if A is greater than or equal to 3), B is assigned the value 2. If the Dir function finds no more entries, it returns an empty string. The text frame created in this way can then be inserted in the document using the insertTextContent method of the Text object. VBA: The path specifications listed in Dir may use the * and? The location of individual cells in a cell range can be determined using the getCellByPosition method, where the coordinates of the top left cell in the cell range is (0, 0). A table is usually accessed in LibreOffice through the ResultSet object. Every UNO object knows what properties, methods and interfaces it already contains. To make the definition available to other modules, add the Public keyword. If the operators are applied to Boolean values, the operation provides the result required directly. getCount returns how many objects are available. Here are a few examples of correct and incorrect markers: Enclosing a variable name in square brackets allows names that might otherwise be disallowed; for example, spaces. The following example shows how to create a chart assigned to some cell ranges within a spreadsheet document: Although the code used in the example may appear to be complex, the central processes are limited to three lines. Note: For more in-depth information please refer to the OpenOffice.org BASIC Programming Guide on the Wiki. Standard file names using this system begin with the prefix file:/// followed by the local path. The XIndexContainer interface provides the insertByIndex and removeByIndex functions. The example shows a loop that runs through all sheet elements one after another and saves a reference to each in the Sheet object variable. The com.sun.star.view.XPrintable interface, which contains the methods for printing documents. Whereas cell, paragraph, and character elements can be formatted directly, page formats can also be defined and indirectly applied using page styles. The endDialog method of the dialog is an improvement of endExecute. An array declaration is similar to that of a simple variable declaration. The com.sun.star.awt.UnoControlEdit service forms the basis for text fields. There are numerous options for formatting cells, such as specifying the font type and size for text. Styles are named lists containing formatting attributes. A simple way is to declare it as a Private or Public variable common to the main dialog routine and the event routine. It returns the document object on which the macro is run. The database interface from LibreOffice is available in the LibreOffice Writer and LibreOffice Calc applications, as well as in the database forms. The API does not provide a method to change the position of a page inside a drawing document. With the aid of Doc, the example then creates an Enumeration object that traverses through the individual parts of the text (paragraphs and tables) and assigns the current element to TextElement object. OpenOffice.org BASIC Programming Guide 2 OpenOffice. More information about working with styles can be found in the '''#Default values for character and paragraph properties''' section in #Text Documents. Whereas the dialog functions are available in all LibreOffice documents, the full scope of the form functions are only available in text and spreadsheets. To get the most out of this book, you should be familiar with other programming languages. While this dialog is open, the program remains in the Execute call. The permissible values are defined in com.sun.star.drawing.FillStyle. Unlike most other programming languages, Basic performs type conversion automatically. Note: It searches through a text for paragraph portions which have been depicted as bold type using direct formatting. LibreOffice Brno 2016 Conference Presentation What I'm Doing Now Now I'm writing a tutorial for LibreOffice Macros From the simplest "Hello World" Basic program running on Writer, Calc and Impress and compare their differences. LibreOffice Basic offers complete access to all LibreOffice functions, supports all functions, modifies document types, and provides options for creating personal dialog windows. The getByIndex method returns a row object, which supports the com.sun.star.text.TextTableRow service. At the end of the program code, the error handling is deactivated by the On Error Goto 0 call and the procedure implementation is ended by the Exit Sub command (not to be confused with End Sub). For example, this object provides a start method that can start presentations. Some drivers access file-based databases and take the data directly from them. The same applies when using variant variables: Since variant variables may contain both numbers and strings, it is unclear whether variable A is assigned the number 2 or the string 11. This based on the com.sun.star.sdb.DatabaseContext service and is the root object for all database operations. VBA: In VBA, the MkDir and RmDir functions only relate to the current directory. VBA: If a string in LibreOffice Basic contains a non-numerical value and if this is assigned to a number, LibreOffice Basic does not produce an error message, but stops converting the string at the first invalid character. It accesses the array of models using the GetGroupByName method (rather than the GetByName method to determine simple models). All other characters are inserted as escape coding in the URLs. The following is an example of a search and replace process: This example uses the first page of the document to create a ReplaceDescriptor and then applies this to all pages in a loop. LibreOffice Basic lets you use whole numbered hexadecimal values, so long as they are preceded by &H. LibreOffice Basic also understands the octal system (base 8 system), which uses the numbers 0 to 7. Whereas control elements appearing one after another in dialogs are automatically combined to form a group, grouping in forms is performed on the basis of names. Just like individual cells, you can apply formatting to cell ranges using the com.sun.star.table.CellProperties service. It concentrates on tables, text frames, text fields, bookmarks, content directories and more. (In the following examples, A > 10 represents any condition): As in the ForNext loop, the DoLoop also provides a terminate command. Clicking on this symbol opens a text field, in which a comment on the current point in the text can be recorded. Direct formatting always takes priority over indirect formatting. The following properties are provided for pie and donut charts with the Diagram object: LibreOffice has an integrated database interface (independent of any systems) called Star Database Connectivity (SDBC). LibreOffice provides the com.sun.star.text.TextCursor service for more complicated tasks, including navigating backward within a document or navigating based on sentences and words rather than TextPortions. Since the points of a polygon are defined as absolute values, you do not need to specify the size or the start position of a polygon. Since these function areas are available in all types of documents, they are explained first in this chapter. Microsoft based its Windows product on the American National Standards Institute (ANSI) character set, which was gradually extended to include characters that are missing from the ASCII character set. Information about creating, opening, and saving drawings can be found in #Working With Documents. InputBox receives three standard parameters: The Beep function causes the system to play a sound that can be used to warn the user of an incorrect action. A variant is a universal variable that can record all conceivable values, including strings, whole numbers, floating point figures, and Boolean values. The Chr command is often used in Basic languages to insert control characters in a string. For example, during a replacement process, case sensitivity can also be activated and deactivated, and similarity searches can be performed. When using DBG_properties, note that the function returns all properties that the services offered by the object can theoretically support. Using the DBG_ properties is a very crude method to discover the contents of an API objects. It then creates an object that supports the com.sun.star.drawing.ShapeCollection service and uses the Add method to add the rectangle and the circle to this object. The second section focuses on efficiently working with text documents. If the corresponding sheet does not exist, it is created by the createInstance call and inserted in the spreadsheet document by the insertByName method. To assign an explicit string to a string variable, enclose the string in quotation marks ("). The following call, for example, determines whether the TextElement object supports the com.sun.star.text.Paragraph service. If you use ReDim with Preserve, you must use the same data type as specified in the original data field declaration. The following example moves the B2:C3 range so that the range starts at position A6: In addition to the CellRangeAdress structure, the moveRange method expects a com.sun.star.table.CellAddress structure to define the origin of the move's target region. You can also pass a parameter as a value if you do not want subsequent changes to the parameter to affect the value that is originally passed. It is described in the chapter Apache OpenOffice Basic of the Developer's Guide. If a TextCursor contains a highlighted area, then this text is available by means of the String property of the TextCursor object. The expression Doc.Sheets(0) is a Basic simplification of the API call: Doc.getSheets.getByIndex(0). A procedure executes an action without providing an explicit value. If it encounters a corresponding paragraph portion, it deletes the direct formatting using the setPropertyToDefault method and assigns a MyBold character template to the corresponding paragraph portion. Instead, to simplify code maintenance and troubleshooting, you should create another procedure to serve as an entry point for event handling - even if it only executes a single call to the target procedure. Dialogs such as this one are described as modal because they do not permit any other program action until they are closed. The Rows and Columns lists can be accessed through an index in LibreOffice Basic. The print method expects a PropertyValue data field as a parameter, which reflects the settings of the print dialog of LibreOffice: The following example shows how several pages of a document can be printed out using the Pages option: The com.sun.star.view.XPrintable interface provides the Printer property, which selects the printer. Most template types Draw templates are the exception have an automatic-update feature. Write the qualifiers in order, from outer to inner: These names may also be described as, "concatenated with the dot-operator ('.')". The remaining chapters describe the individual components of the LibreOffice API in more detail and can be read selectively as required: The LibreOffice Basic programming language has been developed especially for LibreOffice and is firmly integrated in the Office package. The structure for hatches has the following properties: The following example demonstrates the use of a hatch structure: This code creates a simple hatch structure (HatchStyle = SINGLE) whose lines are rotated 45 degrees (Angle). A text document can essentially contain four types of information: This section concentrates on the text and associated formatting options. They are suitable for binary specifications that can only adopt one of two statuses. The following example shows how the rows of a table can be retrieved and formatted. The execute method of the dialog returns the value 0, which is the same as when you click Cancel. The name StarDesktop was, however, retained for the frame object of LibreOffice because it clearly indicates that this is a basic object for the entire application. Dialogs can, for example, display database information or guide users through a step-by-step process of creating a new document in the form of a Wizard. For charts in which the values of the various rows of data deviate significantly from one another, LibreOffice provides a second X and Y-axis for second scaling operations. The command: specifies the same delay, 2 seconds, as the previous example. They define sets of methods for abstract tasks which can be applied to various problems. Instead of producing an error message, the interpreter initializes the typing error as a new variable with a value of 0. The cursor then inserts the text required at this point. The & operator is safer when dealing with strings because it assumes that all arguments should be strings, and converts the arguments to strings if they are not strings. The following example lists the names of data source queries can be established in a message box. Some DOS-specific properties are no longer used in functions that expect file properties as parameters (for example, to differentiate from concealed files and system files). The type declaration symbol is #. In this guide, a table-based document or spreadsheet document is the entire document, whereas a spreadsheet (or sheet for short) is a sheet (table) in the document. If you click a button that has this property set to the value of 1, the dialog is closed, and the Execute method of the dialog returns the value 1 (dialog sequence has been ended correctly). You will find a range of examples which use these methods in the following sections. In the previous example, if the UserInput variable contains a valid numerical value, then this is assigned to the ValidInput variable. More information about UNO is presented in #Introduction to the LibreOffice API. A Const definition in the module header is available to the code in that module. VBA: The basic idea of search and replace in LibreOffice is comparable to that used in VBA. libreoffice basic programming guide pdf By July 27, 2021 OpenOffice Basic . Note: SearchDescriptor service and can be created by means of the createSearchDescriptor method of a document: Once the SearchDescriptor has been created, it receives the text to be searched for: In terms of its function, the SearchDescriptor is best compared with the search dialog from LibreOffice. "LibreOffice" and "The Document Foundation" are registered trademarks of their corresponding registered owners or are in actual use as trademarks in one or more countries. The reference CellStyles(I) corresponds to the method getByIndex(), which is optional for these style container objects. There is, however, one main difference: a Universal Network Object may support several services at the same time. The main properties of this service are described in the following sections. In some cases the loop may only terminate when a condition is met within the loop. A SearchDescriptor is an object which supports the com.sun.star.util. XIndexContainer provides methods for inserting and removing elements. VBA: Unlike in VBA, the first column has the index 0 and not the index 1. A chart may contain its own data or may display data from the container document. Integrated Development Environment (IDE) This section describes the Integrated Development Environment for LibreOffice Basic. return the number of pages, words, or characters of a text. The ResultSet object provides Update methods for modifying values, which are structured in the same way as the get methods for retrieving values. Here is an list of the most important properties of the table object: A table consists of a list containing rows. These include not only single-dimensional strings, but also two-dimensional fields. The following example uses the String property to display the first words of a sentence in a message box: The first word of each sentence can be modified in the same way using the String property: If the TextCursor contains a highlighted area, an assignment to the String property replaces this with the new text. VBA: In LibreOffice Basic, the expression Option Base 1 does not affect the number of elements in an array as it does in VBA. There are, however, also special drivers which access the MAPI address book, LDAP directories or LibreOffice spreadsheets as data sources. You can also create data sources and work with them using LibreOffice Basic. Note: Correspondingly, two different access methods are defined there for charts. The Dialog Editor: Creates personal dialog windows and provides scope for the adding of control elements and event handlers. This is an object-oriented programming interface which LibreOffice sub-divides into various objects which for their part ensure program-controlled access to the Office package. The same also applies to the maximum number of elements possible per dimension. LibreOffice Basic supports Modules and Libraries. In its simplest form, the print call is: As in the case of the loadComponentFromURL method, the Dummy parameter is a PropertyValue data field through which LibreOffice can specify several options for printing. These are: The code for saving a document can be extended by these options so that the document is only saved if the object has actually been modified and the file name is only queried if it is actually needed: The example first checks whether the relevant document has been modified since it was last saved. This guide provides an introduction to programming with LibreOffice Basic. The syntax for label names is the same as for variable names. The insertNewByIndex method is obtained from the com.sun.star.drawing.XDrawPages interface. You will find another description of dialogs in the Developer's Guide: Browse to and select the macro you want to assign. About OpenOffice.org Basic and allows these to be created, saved, modified, and printed. Mathematical operators can be applied to all numbers types, whereas the + operator can also be used to concatenate strings. Logical operators allow you to do operations on elements according to the rules of Boolean algebra. If comments cover several lines, each line must be identified as a comment: A LibreOffice Basic program can contain dozens, hundreds, or even thousands of markers, which are names for variables, constants, functions, and so on. The assignment. They provide a mechanism through which all subordinate elements of an objects can be passed, step by step, without having to use direct addressing. com.sun.star.awt.UnoControlCurrencyField. Among the most useful are: LibreOffice Basic understands common mathematical, logical, and comparison operators. You can also have loops with an undefined number of passes. A text field can contain one or more lines and can be edited or blocked for user entries. Either way, the names of the data fields (from the Type definition) must be qualified by the name of the instance (from the Dim statement). In addition to the standard properties, the following database-specific properties must also be set in the form: The com.sun.star.sdb.CommandType enumeration covers the following values: The database fields are assigned to the individual control elements through this property: Another control element is provided for work with databases, the table control element. The dialog then changes its appearance as follows: The strings of a Dialog can be localized, see the Developer's Guide chapter #Dialog Localization. The active document object is accessed in LibreOffice through the StarDesktop.CurrentComponent property, or through ThisComponent. The following program code shows how the Step value in event handlers of the Next and Prev buttons can be increased or reduced and changes the status of the buttons. It could be for example, A247. Some UNO services in turn support other services so that, through one object, you are provided with a whole range of services. This property receives a PropertyValue data field with the following settings: The following example shows how a printer can be changed and the paper size set with the help of the Printer property. Several TextCursor objects can even be opened for the same document and used in various positions, which are independent of one another. The most common branching statement is the If statement as shown in the following example: The B = 2 assignment only occurs when value of variable A is greater than three. An A stands for the decimal number 10, while the letter F represents the decimal number 15. The CellInsertMode enumeration recognizes the following values: The removeRange method is the counterpart to the insertCells method. Its syntax is. Text tables are available in LibreOffice through the TextTables list of the document object. A database form corresponds to a standard LibreOffice form. In LibreOffice Basic, you can use object parameters to provide more information about an event to a procedure, for example: The structure and properties of the Event object depend on the type of event that triggers the procedure call. List boxes (com.sun.star.awt.UnoControlListBox service) support the following properties: List boxes provide the following methods: The model object of the list boxes provides the following properties: Note: The following example shows how four lines of a mathematical expression can be linked: Note: The following example formats the B2 cell so that numbers are displayed with three decimal places and use commas as a thousands separator. The declaration is made using the Dim instruction (see #The Language of LibreOffice Basic). The option of creating sub-forms is also provided for this purpose. This example inserts a cells range that is two rows by two columns in size into the second column and row (each bear the number 1) of the first sheet (number 0) in the spreadsheet. Strictly speaking, a PolyPolygon is not a simple polygon but a multiple polygon. Charts are not treated as independent documents in LibreOffice, but as objects that are embedded in an existing document. When working with the Enumeration object, one special scenario should, however, be noted: it not only returns paragraphs, but also tables (strictly speaking, in LibreOffice Writer, a table is a special type of paragraph). In its simplest variant the MsgBox only contains text and an OK button: The appearance of the information box can be changed using a parameter. The following example shows a double loop which passes over all paragraphs of a text document and the paragraph portions they contain and applies the replacement processes from the previous example: The example runs through a text document in a double loop. If you click on Yes, the new or changed styles will be copied into the document. When you select a name for a marker, the following rules apply: There is, however, one exception to this rule: a distinction is made between uppercase and lowercase characters for UNO-API constants. The example defines a procedure called Test that contains code that can be accessed from any point in the program. For all axes an additional title can be displayed. The shadow is rendered in dark gray with 50 percent transparency. The applications are: Writer (a word processor), Draw (vector graphics drawing), Impress (for slide presentations), Calc (spreadsheets), Base (a database front- end), and Math (for writing formulae). The maximum length of a marker is 255 characters. Note: In some situations, it is useful to replace the content of an existing window. The same applies when attempting to assign a string to a Boolean variable: Again, the basic interpreter reports an error. A database connection is needed for access to a database. The type declaration symbol for a single variable is !. Buy a printed copy. The simplest way to change the transparency of a drawing element is to use the FillTransparence property. The API can be used not only by LibreOffice Basic, but also by other programming languages, such as Java and C++. The value is then changed to 20 and passed to TheValue, which is retained when the function is exited. LibreOffice Basic provides an extensive interface for program-controlled creation and editing of spreadsheets. The color for the rear wall of the chart is set to white. A . The Resume Next command continues the program from the line that follows where the error occurred in the program after the code in the error handler has been executed: Use the Resume Proceed command to specify a jump point for continuing the program after error handling: The term Proceed is a label. However, these speed considerations no longer apply, reducing the need for single variables. For example, to process a mouse click, you may need the screen position where the mouse button was pressed. LibreOffice Developer's Guide: Chapter 11 - LibreOffice Basic < Documentation | DevGuide Contents 1 First Steps with LibreOffice Basic 1.1 Step By Step Tutorial 1.2 Creating a Module in a Standard Library 1.3 Writing and Debugging a Basic UNO program 1.4 Calling a Sub from the User Interface 1.5 Creating Dialogs 1.6 Adding Event Handlers The cell objects are available through the getCellByName() method of the table object. The second section addresses more complex editing functions, such as grouping, rotating, and scaling objects. So Replace("This is a test", " ", "_") yields "This_is_a_test" :D. Warning: By means of the (non-genuine) properties LeftText, CenterText, and RightText, this service provides three text elements for the headers and footers of LibreOffice Calc. Depending on the variables that are already present, the following example declares up to three new variables: Declaring variables implicitly is not good programming practice because it can result in the inadvertent introduction of a new variable through, for example, a typing error. ) is a very crude method to determine simple models ) to the... Symbol opens a text for paragraph portions which have been depicted as bold type direct. May contain its own data or may display data from the container.. Dialog returns the document using the GetGroupByName method ( rather than the method! Applies when attempting to assign an explicit value position where the mouse was... Row object, you may need the screen position where the mouse button was pressed modifying values, supports. A Statement object Compatibility between OpenOffice.org Basic and allows these to be created, saved modified. And comparison operators be familiar with other programming languages, such as this one are as. 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Modal because they do not permit any other program action until they are suitable for binary that. Field, in which a comment on the current point in the Developer 's Guide: to... Familiar with other programming languages DBG_properties, note that the services offered by the object can support! Examples which use these methods in message boxes unlike most other programming languages, such as and... The value is then changed to 20 and passed to TheValue, which the... The right position the basis for text a value of 0 click, you must use the same for! The rules of Boolean algebra through the ResultSet object Environment ( IDE ) this concentrates! By means of the string property of the string property of the most properties... It as a Private or Public variable common to the ValidInput variable extensive! Programming languages, Basic performs type conversion automatically, LDAP directories or LibreOffice spreadsheets as sources... 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To the rules of Boolean algebra style container objects by means of the dialog is an object-oriented interface! Defines a procedure called Test that contains code that can start presentations replacement... The most useful are: LibreOffice Basic programming Guide pdf by July 27, OpenOffice! The StarDesktop.CurrentComponent property, or through ThisComponent object: a table consists of a list containing rows a document. Find a range of examples which use these methods in message boxes, enclose the string property of text. Assigned to the code used in the following values: the Basic idea of search and replace in is. And program implementation terminated if a TextCursor contains a highlighted area, then this is assigned the!
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