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The SDK provides a rich set of examples in different programming
languages (Java, Python, C++, LibreOffice 7.4 Basic, OLE) to illustrate the use
of the API and demonstrate how to benefit from the included word
processor, spreadsheet, presentation software, graphics program and
database of LibreOffice 7.4.
Some of the examples need a running office instance listening on a
port. If this is necessary you will get further information in the
makefiles.
Every makefile contains at least one run target to execute an
running example, please see the makefile output in the different
example directories. Some of the examples which create a component have
no run target. In these cases a document is provided which instantiates
and runs the component (see the makefile output). Also the Basic
examples provide documents which use and shows the implemented
functionality.
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| Java examples |
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| Text Document Examples |
Description |
| BookmarkInsertion |
This application connects to the office server and
gets the multi component factory. An empty text document will be opened
and an example text will be entered. Afterwards, some bookmarks will be
inserted. |
| HardFormatting |
This program connects to the office server and gets
the multi component factory. Furthermore, an empty text document will be
opened, an example text will be entered, some text attributes will be
inspected, and the PropertyState will be checked from the selection. |
| SWriter |
The program connects to the office server and gets the
multi component factory. An empty text document will be created, some
text will be entered, and a text table, a colored text, and text frame
will be inserted. |
| StyleCreation |
The example connects to the office server and gets the
multi component factory. An empty text document will be opened, a new
paragraph style will be created, and applied. |
| StyleInitialization |
The program connects to the office server and gets the
multi component factory. Thereafter, an empty text document will be
opened and an example text will be entered. The paragraph collection will
be used, in order to apply a different paragraph style on the
paragraphs. |
| TextDocumentStructure |
The application connects to the office server and gets
the multi component factory. An empty text document will be opened, an
enumeration of all paragraphs and an enumeration of all text portions
will be created. |
| TextReplace |
The example connects to the office server and gets the
multi component factory. An empty text document will be created, an
example text will be inserted, and some English spelled words will be
replaced with US spelled words. |
| GraphicsInserter |
The GraphicsInserter creates a graphics object on an
empty text document by setting its position, width, height, and URL. |
| WriterSelector |
This class gives you information on the selected
objects (text range, text frame, or graphics) at a LibreOffice
Server. |
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| Spreadsheet Document Examples |
Description |
| CalcAddins |
This component adds new functions to the spreadsheet
application. After registering the component, the inserted functions can
be found with help of the functions autopilot. The new functions are
assigned to the category Add-in. |
| ChartTypeChange |
This class loads a LibreOffice 7.4 Calc document and
changes the type of the embedded chart. |
| EuroAdaption |
The application connects to the office server and gets
the multi component factory, opens an empty Calc document, enters an
example text, sets the number format to DM, changes the number format to
EUR (Euro), and uses the DM/EUR factor on each cell with content. |
| SCalc |
The program connects to the office server and gets the
multi component factory. Then an empty calc document will be opened,
cell styles will be created, some data will be inserted into the sheets,
and the created cell styles will be applied. Finally, a 3D chart will be
inserted. |
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| Drawing Document Examples |
Description |
| SDraw |
This program connects to the office server and gets
the multi component factory. Afterwards, an empty text document will
be created and some shapes will be inserted on the draw page. |
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| Document Handling Examples |
Description |
| DocumentConverter |
The program offers a service that converts arbitrary
documents to a favored document type. |
| DocumentLoader |
The DocumentLoader can open a new or an
existing document. |
| DocumentPrinter |
The DocumentPrinter allows you to print the
favored pages of a specified document on your favored printer. |
| DocumentSaver |
The DocumentSaver shows how to save a document and
how you can change the type of your document. |
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| UNO Component Examples |
Description |
| Object Inspector |
The Object Inspector is primarily an auxiliary tool
for the developer, which can present information about an object of the
LibreOffice 7.4 API at run-time. Depending on the object to be inspected,
appropriate methods, interfaces, services, and attributes can be displayed
to the developer. The methods, interfaces, services and attributes are
represented in a predictable tree. If the attributes contained in an
object are to be examined, the appropriate nodes in the tree can be
expanded with the help of the mouse. For each non primitive object, five
categories are offered to the user, as long as those are available with
that object. The Object Inspector is currently available as a NetBeans project
only because of major code changes. Please see the project page for further details. |
| MinimalComponent |
This class provides a minimal UNO component. You can
take this class as a base for your own components. By extensions of this
class it is possible to also extend the function range of the Office. |
| PropTest |
Contains a component that provides property set
interfaces by means of inheriting com.sun.star.lib.uno.helper.ProperterSet. |
| ToDo |
For every to-do listed in a spreadsheet document, this
component calculates the start date, day of week of the start date, the
end date, and the day of week of the end date. All calculations are
dependent upon the values of "Needed Days", "Due Date"
and "Status". The columns "Needed Days" and
"Status" are mandatory. The first to-do should be placed in
row nine. The date to start the calculation should be placed in cell C6.
The private holidays should be placed in cell K4/K5 and below.
All rows will be calculated up to the first empty cell in the first
column. If a cell in the column "Due Date" is colored red,
you should take a look at your entries. |
| EmbeddedObject |
Contains a component that provides an example of embedded object implementation. |
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| Python examples |
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| Example |
Description |
| ToolPanelPoc |
This proof of concept extension illustrates how to create a ToolPanel in Calc. |
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No Additional information
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| C++ examples |
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The DocumentLoader example needs a running office server, before
running this program you should invoke the office with the following
command:
soffice "--accept=socket,host=localhost,port=2083;urp;StarOffice.ServiceManager"
You can also customize the mentioned host and port to your needs.
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| Example |
Description |
| Draw |
This is essentially the same as the appropriate Java
example, but is implemented in C++. It does not need a running office instance. |
| DocumentLoader |
This component works the same as the appropriate Java
example, but is implemented in C++. It needs a running office instance. |
| Counter |
This demo shows how to implement a very simple UNO
component and how to access the UNO component from an executable. |
| Remote client |
The 'uno' program is used to export an arbitrary
service to other processes. In this example the com.sun.star.uno.Pipe
service (which is built in io-module) is exported. The client component
implements the
com.sun.star.lang.XMain interface. In the run method, it connects to
the servers process and retrieves an instance and does some calls on the
instance. |
| complextoolbarcontrols |
This example shows how to create a toolbar add-on with complex toolbar controls.
It shows how to use an Image Button, a Combo Box, a Spin Field, an Edit Field, a Dropdown Box, a Toggle Dropdown Button and a normal Dropdown Button |
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| LibreOffice 7.4 Basic examples |
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The example programs are embedded in LibreOffice 7.4 documents in the
samples directory. To view or edit the LibreOffice 7.4 Basic source,
select the appropriate document and then select Tools->Macro.
Most of the examples are stand-alone, but two of them (Creating an
Index and Import/Export of ASCII Files) have an associated data file
identified by a .txt file name suffix).
Some of the examples are also available in Java, you can find them in
the
Java section.
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| Example |
Description |
| Changing Appearance |
To change the style used for certain words, you can
start with the following example. This code searches for the regular
expression the[a-z], which stands for the text portion the
followed by exactly one lowercase letter. All occurrences of these four
letters are then changed to bold characters. The same happens in the next
part of the program, this time changing the appearance of
all[a-z] to italic. In order for this example to work, you
must execute it from an open text document. |
| Replacing Text |
If you regularly receive documents from other people
for editing, you might want to make sure that certain words are always
written the same. The next example illustrates this by forcing certain
words to be spelled in American English.
In order for this example to work, you must execute it from an open text
document. For a real world application, it is a good idea to read the
words from an external file. |
| Using Regular Expressions |
Another application of automatic text modification is
related to stylistic questions. Suppose your company’s policy is to
avoid the use of certain words. You want to replace these words, but you
cannot do that automatically because you have to find the appropriate
replacement, which depends on the context. So instead of deleting or
replacing the offending words automatically, you change their color to
make them stand out during a subsequent manual review process.
The following example handles two kinds of unwanted wordings: those
which are absolutely forbidden and must be replaced by something else,
and those which are considered bad style. A subroutine is responsible
for the changes. It can be used to make all words in a list appear in a
certain color in the text document. To keep the lists short, we use
regular expressions which provide for the variants of the words
(plural, adjective etc.). |
| Inserting Bookmarks |
The next example does something very similar. This time, however, we
do not change the color of the words but insert a bookmark at each of
them. You can thus use the StarOffice navigator to jump directly from
word to word. Bookmarks must first be created using
createInstance(). They are then inserted with
insertTextContent() at the current text range.
The main difference to the preceding example is the For loop in
markList(). Instead of changing the color of the current
word, it creates a new bookmark, oBookmark, whose name is the current
word with an integer appended. It then inserts this bookmark at the
word. |
| Creating an Index |
Indices for text documents can be created manually in
LibreOffice 7.4 Writer by clicking on the words that should appear in the
index. If the document is large, or if you have to generate indices for
several documents, this task should be automated. |
| Adapting to Euroland |
Most of the members of the European Union will abandon
their old currency in favor of the new Euro in 2001. This requires
modifications to all programs using the old currencies. Since the exchange
rates for the old currencies have been fixed at the end of 1999, one can
already convert old data. The following program does this for all values
in a table that are formatted with the currency string DM. |
| Import/Export of ASCII Files |
You can use the drawing facilities of StarOffice API
to generate a picture from ASCII input. One application would be a
hierarchical representation of a directory listing, based on textual
data. |
| Stock Quotes Updater |
If you want to display stock charts for certain
companies, you can open up your browser every day, go to a search engine,
look up the quote and copy it by hand into a table. Or you can use a
program that does all this automatically. The following example relies on
the sheet module. It uses URLs to obtain the current stock quotes. The
quotes are displayed in sheets, one for each company. We show a line
diagram and the numerical values for this company on every sheet. The
functionality is hidden in the three subroutines GetValue(),
UpdateValue(), and UpdateChart(). |
| Forms and Controls |
The example document Burger Factory offers some forms
and controls, which you can use to order your desired burger type,
beverage, topping, and sauce. By hitting the button
"Order now!", your order will be placed. |
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| Object Linking and Embedding (OLE) examples |
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| Example |
Description |
| ActiveX Control |
The ActiveX control shows an example of access to UNO
through COM technology. It requires a properly installed StarOffice
version 6.0 or OpenOffice 1.0 or newer. This is a Lite ActiveX control
so it can be used only in containers that allow the use of such controls.
It can be activated with an <OBJECT> tag from a html-page to embed
a document. Without any parameters a new writer document will be opened
for editing. For more details please see the README.
Note: This example works only under windows and if you don't use the MS
.Net C++ compiler please check the makefile and take notice of the
comments. |
| WriterDemo |
This Visual Basic Script creates an empty text
document and inserts text, a table, and a text frame. |
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| Common Language Infrastructure (CLI) examples |
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| Example |
Description |
| Spreadsheet Example |
This example is written in C# and shows how Spreadsheet
documents are created and filled with content. This example actually
consists of three separate executables, SpreadsheetSample.exe,
GeneralTableSample.exe, ViewSample.exe. |
| WriterDemo |
This example is written in VB.NET. It creates a text
document and inserts text, a table, and a text frame. |
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