Constructing Helpers

Up to then I have only used C-like style. This C-like style was only to focus on what seems the most important for a beginner : how to handle interfaces, services... But in this chapter we want to show a different way : constructing classes which help the programmer : it's why we name them “helper”. We can encounter such examples in Java code examples which comes with SDK. We begin with the fisrt one which comes in spirit : a connection helper.

Desktop Helper

The GAP's Helper

GAP from India helps me when trying to construct a Run Time Dialog Box. He provided this helper. We first give the SimpleOOConnection.hpp file : [cpp] //Listing 1 Gap helper // C++ // SimpleOOConection.hpp

1. ifndef SIMPLEOOCONNECTION_HPP_
2. define SIMPLEOOCONNECTION_HPP_
3. endif

1. include<iostream>

1. include <cppuhelper/bootstrap.hxx>
2. include <com/sun/star/bridge/XUnoUrlResolver.hpp>
3. include <com/sun/star/lang/XMultiServiceFactory.hpp>

using namespace std; using namespace com::sun::star::uno; using namespace com::sun::star::lang; using namespace com::sun::star::bridge; using namespace rtl; using namespace cppu;

class SimpleOOConnection { public : SimpleOOConnection(); Reference< XMultiServiceFactory > connect_ooffice(const char *url);

private : int iNoOfConnection_;

};

And now the implementation file :

[cpp] //Listing 2 // C++

1. include "SimpleOOConnection.hpp"

// int SimpleOOConnection::iNoOfConnection_=0; SimpleOOConnection::SimpleOOConnection() { iNoOfConnection_++; }

Reference< XMultiServiceFactory > SimpleOOConnection::connect_ooffice(const char *url) { // create the initial component context cout<<endl; cout<<url<<"HI"<<endl;

//Initiating Local Component Context Reference< XComponentContext > rComponentContext = defaultBootstrap_InitialComponentContext();

/**

• This local Context contents small Service Manager tha konws how to create services that are neccessary to talk to other
• component context.One such service is com.sun.star.bridge.UnoUrlResolver So it ask local Service Manager to create this
• service.
• /

// retrieve the Local Service Manager from the Local context i.e We get Just servicemanager here Reference< XMultiComponentFactory > rServiceManager = rComponentContext->getServiceManager();

// here we instantiate a sample service with the service com.sun.star.bridge.UnoUrlResolver . Created by local service manager. Reference< XInterface > rInstance = rServiceManager->createInstanceWithContext( OUString::createFromAscii("com.sun.star.bridge.UnoUrlResolver" ),rComponentContext );

// Query for the XUnoUrlResolver interface fro sample service Reference< XUnoUrlResolver > rResolver( rInstance, UNO_QUERY );

//Now it uses UnoUrlResolver to get component context together with service manager from server side

try { // resolve the uno-url rInstance = rResolver->resolve( OUString::createFromAscii(url ) );

// query for the simpler XMultiServiceFactory interface, sufficient for scripting Reference< XMultiServiceFactory > rOfficeServiceManager (rInstance, UNO_QUERY);

return(rOfficeServiceManager); } catch( Exception &e ) { OString o = OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US ); printf( "Error: %s\n", o.pData->buffer ); return('\0'); }

}

Simple Desktop Helper

We first give the header file : [cpp] //Listing 3 Header file of the desktop helper // C++ //********* DesktopHelper class : header DesktopHelper.hpp

1. include <com/sun/star/uno/XInterface.hpp>
2. include <com/sun/star/frame/XComponentLoader.hpp>
3. include <com/sun/star/lang/XMultiServiceFactory.hpp>
4. include <com/sun/star/frame/XDesktop.hpp>

using namespace com::sun::star::uno; using namespace com::sun::star::frame; using namespace com::sun::star::lang;

class DesktopHelper { public : DesktopHelper(); Reference< XInterface > Desktop; Reference< XComponentLoader > xComponentLoader; Reference< XMultiServiceFactory > xSVMG; Reference< XDesktop > xDesktop; private : Reference< XMultiServiceFactory > ooConnect(); };

and the implementation :

Listing 4 Desktop helper implementation // C++ //****** DesktopHelper class : implementation DesktopHelper.cxx

1. include <stdio.h>
2. include <com/sun/star/bridge/XUnoUrlResolver.hpp>
3. include <cppuhelper/bootstrap.hxx>

using namespace com::sun::star::bridge; using rtl::OUString; using rtl::OString; using namespace cppu;

DesktopHelper::DesktopHelper(){ xSVMG = ooConnect(); if( xSVMG.is() ){

       	printf( "Connected sucessfully to the office\n" );
   	}

//get the desktop service using createInstance returns an XInterface type

   	Reference< XInterface  > Desktop = xSVMG->createInstance(
   		OUString::createFromAscii( "com.sun.star.frame.Desktop" ));

//query for the XComponentLoader interface

   	xComponentLoader = Reference< XComponentLoader > (Desktop, UNO_QUERY);
   	if( xComponentLoader.is() ){
       	printf( "XComponentloader successfully instanciated\n" );

   	}
  	xDesktop = Reference< XDesktop > (Desktop,UNO_QUERY);

}

Reference< XMultiServiceFactory > DesktopHelper::ooConnect(){

  // create the initial component context
  Reference< XComponentContext > rComponentContext = 

defaultBootstrap_InitialComponentContext();

  // retrieve the servicemanager from the context
  Reference< XMultiComponentFactory > rServiceManager = 

rComponentContext->getServiceManager();

  // instantiate a sample service with the servicemanager.
  Reference< XInterface > rInstance =  rServiceManager->createInstanceWithContext(
        OUString::createFromAscii("com.sun.star.bridge.UnoUrlResolver" ),rComponentContext );
  // Query for the XUnoUrlResolver interface
  Reference< XUnoUrlResolver > rResolver( rInstance, UNO_QUERY );

  if( ! rResolver.is() ){
     printf( "Error: Couldn't instantiate com.sun.star.bridge.UnoUrlResolver service\n" );
     return NULL;
  }
  try {
     // resolve the uno-url
     rInstance = rResolver->resolve( OUString::createFromAscii(
        "uno:socket,host=localhost,port=8100;urp;StarOffice.ServiceManager" ) );

     if( ! rInstance.is() ){
        printf( "StarOffice.ServiceManager is not exported from remote counterpart\n" );
        return NULL;
     }

     // query for the simpler XMultiServiceFactory interface, sufficient for scripting
     Reference< XMultiServiceFactory > rOfficeServiceManager (rInstance, UNO_QUERY);

     if( ! rOfficeServiceManager.is() ){
           printf( "XMultiServiceFactory interface is not exported for StarOffice.ServiceManager\n" );
           return NULL;
       }
       return rOfficeServiceManager;
  }
  catch( Exception &e ){
     OString o = OUStringToOString( e.Message, RTL_TEXTENCODING_ASCII_US );
     printf( "Error: %s\n", o.pData->buffer );
     return NULL;
  }
  return NULL;

}

Desktop Helper with message box

What we want here is to have an helper which can avoid us using printf and use a message box instead. But remember the message box interface is deprecated. The new class definition is : [cpp] //Listing 5 A second desktop helper (header file) // C++ //********* DesktopHelper class : header DesktopHelper.hpp

1. include <com/sun/star/uno/XInterface.hpp>
2. include <com/sun/star/frame/XComponentLoader.hpp>
3. include <com/sun/star/lang/XMultiServiceFactory.hpp>
4. include <com/sun/star/frame/XDesktop.hpp>
5. include <com/sun/star/awt/XToolkit.hpp>

using namespace com::sun::star::uno; using namespace com::sun::star::frame; using namespace com::sun::star::lang; using namespace com::sun::star::awt; class DesktopHelper { public : DesktopHelper(); void ShowMessageBox( const OUString& aTitle, const OUString& aMsgText ); Reference< XInterface > Desktop; Reference< XComponentLoader > xComponentLoader; Reference< XMultiServiceFactory > xSVMG; Reference< XDesktop > xDesktop; sal_Int16 endMsgbox; private : Reference< XMultiServiceFactory > ooConnect(); sal_Bool useMsgbox; Reference< XToolkit > xToolkit; Reference< XFrame > xFrame; }; and the new constructor : [cpp] //Listing 6 A second desktop helper (implementation file) // C++ DesktopHelper::DesktopHelper(){ useMsgbox = false; endMsgbox = 0; xSVMG = ooConnect(); if( xSVMG.is() ){

       	printf( "Connected sucessfully to the office\n" );
   	}

//get the desktop service using createInstance returns an XInterface type

   	Reference< XInterface  > Desktop = xSVMG->createInstance(
   		OUString::createFromAscii( "com.sun.star.frame.Desktop" ));

//query for the XComponentLoader interface

   	xComponentLoader = Reference< XComponentLoader > (Desktop, UNO_QUERY);
   	if( xComponentLoader.is() ){
       	printf( "XComponentloader successfully instanciated\n" );

   	}
  	xDesktop = Reference< XDesktop > (Desktop,UNO_QUERY);

xToolkit = Reference< XToolkit >( xSVMG->createInstance(

                                       OUString( RTL_CONSTASCII_USTRINGPARAM(
                                           "com.sun.star.awt.Toolkit" ))), UNO_QUERY );

xFrame = xDesktop->getCurrentFrame(); if (xFrame.is() && xToolkit.is()) useMsgbox = true; } The method to print out a message is : [cpp] //Listing 7 ShowMessageBox function (XMessageBox interface is deprecated) // C++ void DesktopHelper::ShowMessageBox( const OUString& aTitle, const OUString& aMsgText ) {

   if ( useMsgbox  )
   {
       // describe window properties.
       WindowDescriptor                aDescriptor;
       aDescriptor.Type              = WindowClass_MODALTOP;
       aDescriptor.WindowServiceName = OUString( RTL_CONSTASCII_USTRINGPARAM( "infobox" ));
       aDescriptor.ParentIndex       = -1;
       aDescriptor.Parent            = Reference< XWindowPeer >												(xFrame->getContainerWindow(), UNO_QUERY );
       aDescriptor.Bounds            = Rectangle(300,200,300,200);
       aDescriptor.WindowAttributes  = WindowAttribute::BORDER | WindowAttribute::MOVEABLE 												| WindowAttribute::CLOSEABLE;

       Reference< XWindowPeer > xPeer = xToolkit->createWindow( aDescriptor );
       if ( xPeer.is() )
       {
           Reference< XMessageBox > xMsgBox( xPeer, UNO_QUERY );
           if ( xMsgBox.is() )
           {
               xMsgBox->setCaptionText( aTitle );
               xMsgBox->setMessageText( aMsgText );
               endMsgbox = xMsgBox->execute();
           }
       }
   }

} The way to use this new feature is shown in the above listing : [cpp] //Listing 8 Using the Desktop Helper // C++ DesktopHelper *aDesktop = new (DesktopHelper); aDesktop->ShowMessageBox( OUString::createFromAscii("try"), OUString::createFromAscii("Hello")); while (! aDesktop->endMsgbox); printf("That's all folks !\n"); where you see how to wait the MessageBox ending. This is why I have added this “endMsgbox” component in the class. Effectively, the problem with xMsgBox->execute() is this is a no-blocking instruction, I mean this instruction doesn't wait the MessageBox 's close. If you have no mean to wait, you will have a runtime error if your program finished befor this MessageBox is closed.

Reflection Helper

Presentation

The reflection helper goal is to provide Object informations on methods, interfaces, services and properties. We begin to give the ReflectionHelper.hpp file : [cpp] //Listing 11 Header file for reflection helper // C++ // ReflectionHelper.hpp

1. include <rtl/ustring.hxx>
2. include <com/sun/star/uno/Sequence.hxx>
3. include <com/sun/star/uno/Any.hxx>
4. include <com/sun/star/lang/XMultiServiceFactory.hpp>
5. include <com/sun/star/beans/XIntrospection.hpp>
6. include <com/sun/star/beans/XIntrospectionAccess.hpp>
7. include <com/sun/star/lang/XTypeProvider.hpp>
8. include <com/sun/star/beans/MethodConcept.hpp>
9. include <com/sun/star/reflection/XIdlMethod.hpp>
10. include <com/sun/star/uno/Type.hxx>
11. include <com/sun/star/beans/Property.hpp>
12. include <com/sun/star/lang/XServiceInfo.hpp>
13. include <com/sun/star/reflection/ParamMode.hpp>

using rtl::OUString; using namespace com::sun::star::reflection; using namespace com::sun::star::beans; using namespace com::sun::star::lang; using namespace com::sun::star::uno;

class ReflectionHelper { public: ReflectionHelper(Any any,Reference< XMultiServiceFactory > oSVM);

Sequence < OUString > getMethods(), getTypes(), getServices(), getPropertiesWithoutValues(), getPropertiesWithValues();


private: Any toInspect; Reference< XMultiServiceFactory > xServiceManager; Reference< XIntrospection >xIntrospection; Reference< XIntrospectionAccess > xIntrospec; Reference< XTypeProvider > xTypeProvider; OUString getValueName(Any object); OUString getParamMode(ParamMode paramMode); // methods Sequence< Reference< XIdlMethod > > mMethods; // Interfaces Sequence< Type > types; // Services Reference< XServiceInfo > xServiceInfo; // Sequence< OUString > services; // Properties Sequence< Property > Properties; }; You can find the complete class implementation here in lising 14

Application

A simple utilisation could be :

[cpp] //Listing 13 // C++ Any toInspect; // I want to inspect rDesktop object : toInspect <<= rDesktop; // need a service manager ReflectionHelper *Reflect = new (ReflectionHelper)(toInspect,rServiceManager); // get all the methods Sequence< OUString > mMethods = Reflect -> getMethods(); printf("******** methods : (%d)\n",mMethods.getLength()); for (int i=0;i<mMethods.getLength();i++){

// do what you want with mMethods[i] : for instance OString OStr = OUStringToOString( mMethods[i], RTL_TEXTENCODING_ASCII_US ); printf("%s\n",OStr.pData->buffer );

}

It's the great values of helpers : they make code simpler and more easy to read.

Printing out Reflection's Results in a Dialog

A fast way of printing out results would be a Dialog and the goal of this chapter is to speak from this topic.

hpp File of the Complete Class

We present again the complete class :

[cpp] //Listing 15 // C++ // ReflectionHelper.hpp class ReflectionHelper { public: ReflectionHelper(Any any,Reference< XMultiServiceFactory > oSVM);

Sequence < OUString > getMethods(), getTypes(), getServices(), getPropertiesWithoutValues(), getPropertiesWithValues(); // Print out void printOut();

private: Any toInspect; Reference< XMultiServiceFactory > xServiceManager; Reference< XIntrospection >xIntrospection; Reference< XIntrospectionAccess > xIntrospec; Reference< XTypeProvider > xTypeProvider; OUString getValueName(Any object); OUString getParamMode(ParamMode paramMode); // methods Sequence< Reference< XIdlMethod > > mMethods; // Interfaces Sequence< Type > types; // Services Reference< XServiceInfo > xServiceInfo; // Sequence< OUString > services; // Properties Sequence< Property > Properties; }; A new method is added : printOut which know how to print results in a run time dialog box.

New Implementation Code

The corresponding implementation's code is now given. Notice the reference of listing 14 in the code. Here is a direct link into the corresponding listing. [cpp] //Listing 16 // C++ // constructor ReflectionHelper::ReflectionHelper(Any any,Reference< XMultiServiceFactory > oSVM) : toInspect(any), xServiceManager(oSVM){ xIntrospection = Reference< XIntrospection >( xServiceManager->createInstance(

                               OUString( RTL_CONSTASCII_USTRINGPARAM(
                               "com.sun.star.beans.Introspection" ))), UNO_QUERY );

xIntrospec = xIntrospection->inspect(toInspect); mMethods = xIntrospec -> getMethods(MethodConcept::ALL); xTypeProvider = Reference< XTypeProvider> (toInspect,UNO_QUERY); types = xTypeProvider->getTypes(); xServiceInfo = Reference< XServiceInfo>(toInspect,UNO_QUERY); Properties = xIntrospec -> getProperties(PropertyConcept::ALL); }

Sequence < OUString > ReflectionHelper::getServices() { return xServiceInfo->getSupportedServiceNames(); }

Sequence < OUString > ReflectionHelper::getMethods(){ // See Listing 14 to find the corresponding code. }

Sequence < OUString > ReflectionHelper::getTypes(){ // See Listing 14 to find the corresponding code. }

// to improve : change all the tests with getCppuType : probably quicker than a string test OUString ReflectionHelper::getValueName(Any object){ // See Listing 14 to find the corresponding code. }

// Get properties with values : only those computed in getValueName Sequence < OUString > ReflectionHelper::getPropertiesWithValues(){ // See Listing 14 to find the corresponding code. }

// Get properties without values but types Sequence < OUString > ReflectionHelper::getPropertiesWithoutValues(){ // See Listing 14 to find the corresponding code. }

// Don't forget to add : #include <com/sun/star/reflection/ParamMode.hpp> // Don't forget to add "com.sun.star.reflection.ParamMode \" in the makefile OUString ReflectionHelper::getParamMode(ParamMode paramMode) {

 // See Listing 14 to find the corresponding code.

}

void ReflectionHelper::printOut(){ Reference< XInterface > xdialogModel = xServiceManager->createInstance( OUString::createFromAscii("com.sun.star.awt.UnoControlDialogModel")); #ifdef DEBUG if (xdialogModel.is()) printf("OK XDialogModel\n"); else printf("Error ... XDialodModel\n"); #endif Any val; Reference< XPropertySet > xPSetDialog(xdialogModel,UNO_QUERY); #ifdef DEBUG if (xPSetDialog.is()) printf("OK XPropertySet\n"); else printf("Error ... XPropertySet\n"); #endif sal_Int32 value=100; val<<=value; xPSetDialog->setPropertyValue(OUString::createFromAscii("PositionX"),val); xPSetDialog->setPropertyValue(OUString::createFromAscii("PositionY"),val); value=300;val<<=value; xPSetDialog->setPropertyValue(OUString::createFromAscii("Width"),val); value=200;val<<=value; xPSetDialog->setPropertyValue(OUString::createFromAscii("Height"),val);

val <<=OUString::createFromAscii("Runtime Dialog Demo"); xPSetDialog->setPropertyValue(OUString::createFromAscii("Title"),val);

Reference< XMultiServiceFactory > xMultiServiceFactory( xdialogModel,UNO_QUERY);

///***************** //******** in the above line xMultiServiceFactory instead xServiceManager !!!!!! //Reference< XInterface > xbuttonModel = xServiceManager>createInstance( .... Reference< XInterface > xbuttonModel = xMultiServiceFactory->createInstance( OUString::createFromAscii("com.sun.star.awt.UnoControlButtonModel")); #ifdef DEBUG if (xbuttonModel.is()) printf("OK UnoControlButtonModel\n"); else printf("Error ... UnoControlButtonModel\n"); #endif Reference< XPropertySet > xPSetButton(xbuttonModel,UNO_QUERY); #ifdef DEBUG if (xPSetButton.is()) printf("OK XPropertySet\n"); else printf("Error ... XPropertySet\n"); #endif value=20; val <<= value; xPSetButton->setPropertyValue(OUString::createFromAscii("PositionX"),val); value=170; val <<= value; xPSetButton->setPropertyValue(OUString::createFromAscii("PositionY"),val); value=50; val <<= value; xPSetButton->setPropertyValue(OUString::createFromAscii("Width"),val); value=14; val <<= value; xPSetButton->setPropertyValue(OUString::createFromAscii("Height"),val); val <<=OUString::createFromAscii("Button1"); xPSetButton->setPropertyValue(OUString::createFromAscii("Name"),val); xPSetButton->setPropertyValue(OUString::createFromAscii("TabIndex"),makeAny((short)0)); val <<=OUString::createFromAscii(">>"); xPSetButton->setPropertyValue(OUString::createFromAscii("Label"),val);

// second button : OK button // we need a second button modedl Reference< XInterface > xbuttonModel2 = xMultiServiceFactory->createInstance( OUString::createFromAscii("com.sun.star.awt.UnoControlButtonModel")); #ifdef DEBUG if (xbuttonModel.is()) printf("OK UnoControlButtonModel\n"); else printf("Error ... UnoControlButtonModel\n"); #endif Reference< XPropertySet > xPSetButton2(xbuttonModel2,UNO_QUERY); #ifdef DEBUG if (xPSetButton2.is()) printf("OK XPropertySet\n"); else printf("Error ... XPropertySet\n"); #endif // *** The following property is not position-independant !!!!! // Don't forget to add : #include <com/sun/star/awt/PushButtonType.hpp> // Don't forget to add "com.sun.star.awt.PushButtonType \" in the makefile // short is found with Inspector val <<= (short)PushButtonType_OK; xPSetButton2->setPropertyValue(OUString::createFromAscii("PushButtonType"),val);

value=220; val <<= value; xPSetButton2->setPropertyValue(OUString::createFromAscii("PositionX"),val); value=170; val <<= value; xPSetButton2->setPropertyValue(OUString::createFromAscii("PositionY"),val); value=50; val <<= value; xPSetButton2->setPropertyValue(OUString::createFromAscii("Width"),val); value=14; val <<= value; xPSetButton2->setPropertyValue(OUString::createFromAscii("Height"),val); val <<=OUString::createFromAscii("Button2"); xPSetButton2->setPropertyValue(OUString::createFromAscii("Name"),val); xPSetButton2->setPropertyValue(OUString::createFromAscii("TabIndex"),makeAny((short)1)); val <<=OUString::createFromAscii("OK"); xPSetButton2->setPropertyValue(OUString::createFromAscii("Label"),val);

Reference< XInterface > xlabelModel = xMultiServiceFactory->createInstance( OUString::createFromAscii("com.sun.star.awt.UnoControlEditModel")); #ifdef DEBUG if (xlabelModel.is()) printf("OK EditModel\n"); else printf("Error ... EditModel\n"); #endif Reference< XPropertySet > xPSetLabel(xlabelModel,UNO_QUERY); #ifdef DEBUG if (xPSetLabel.is()) printf("OK XPropertySet2\n"); else printf("Error ... XPropertySet2\n"); #endif value=10; val <<= value; xPSetLabel->setPropertyValue(OUString::createFromAscii("PositionX"),val); value=10; val <<= value; xPSetLabel->setPropertyValue(OUString::createFromAscii("PositionY"),val); value=280; val <<= value; xPSetLabel->setPropertyValue(OUString::createFromAscii("Width"),val); value=150; val <<= value; xPSetLabel->setPropertyValue(OUString::createFromAscii("Height"),val); xPSetLabel->setPropertyValue(OUString::createFromAscii("HScroll"),makeAny((sal_Bool)true)); xPSetLabel->setPropertyValue(OUString::createFromAscii("VScroll"),makeAny((sal_Bool)true)); xPSetLabel->setPropertyValue(OUString::createFromAscii("MultiLine"),makeAny((sal_Bool)true)); xPSetLabel->setPropertyValue(OUString::createFromAscii("HardLineBreaks"),makeAny((sal_Bool)true)); val <<=OUString::createFromAscii("Label1"); xPSetLabel->setPropertyValue(OUString::createFromAscii("Name"),val); xPSetLabel->setPropertyValue(OUString::createFromAscii("TabIndex"),makeAny((short)2));

// insert all the control in container Reference< XNameContainer > xNameCont(xdialogModel,UNO_QUERY); #ifdef DEBUG if (xNameCont.is()) printf("OK XNameContainer\n"); else printf("Error ... XNameContainer\n"); #endif val <<= xbuttonModel; // We insert first the button xNameCont->insertByName(OUString::createFromAscii("Button1") ,val); #ifdef DEBUG printf("First\n"); #endif val <<= xbuttonModel2; xNameCont->insertByName(OUString::createFromAscii("Button2") ,val); //printf("First\n"); // We insert now the text control val <<= xlabelModel; xNameCont->insertByName(OUString::createFromAscii("Label1") , val); // create the dialog control and set the model Reference< XInterface >dialog = xServiceManager->createInstance( OUString::createFromAscii("com.sun.star.awt.UnoControlDialog")); #ifdef DEBUG if (dialog.is()) printf("OK dialog\n"); else printf("Error ... dialog\n"); #endif Reference< XControl > xControl(dialog,UNO_QUERY); #ifdef DEBUG if (xControl.is()) printf("OK XControl\n"); else printf("Error ... XControl\n"); #endif Reference< XControlModel > xControlModel(xdialogModel,UNO_QUERY); #ifdef DEBUG if (xControlModel.is()) printf("OK xControlModel\n"); else printf("Error ... xControlModel\n"); #endif xControl->setModel(xControlModel);

// add an action listener to the button control Reference< XControlContainer > xControlCont(dialog,UNO_QUERY); #ifdef DEBUG if (xControlCont.is()) printf("OK xControlContainer\n"); else printf("Error ... xControlContainer\n"); #endif Reference< XInterface > objectButton=xControlCont->getControl(OUString::createFromAscii("Button1")); #ifdef DEBUG if (objectButton.is()) printf("OK objectButton\n"); else printf("Error ... objectButton\n"); #endif Reference< XButton > xButton(objectButton,UNO_QUERY); ActionListenerImpl *xListener = new ActionListenerImpl( xControlCont,this ); Reference< XActionListener > xActionListener = static_cast< XActionListener* > ( xListener ); xButton->addActionListener( xActionListener );

// create a peer Reference< XToolkit >xToolkit = Reference< XToolkit >( xServiceManager->createInstance(

                                       OUString( RTL_CONSTASCII_USTRINGPARAM(
                                           "com.sun.star.awt.Toolkit" ))), UNO_QUERY );

#ifdef DEBUG if (xToolkit.is()) printf ("XToolkit OK...\n"); else printf("XToolkit Error\n"); #endif Reference< XWindow > xWindow(xControl,UNO_QUERY); xWindow->setVisible(true); xControl->createPeer(xToolkit,NULL);

Reference< XDialog > xDialog(dialog,UNO_QUERY); xDialog->execute(); Reference< XComponent > xComponent(dialog,UNO_QUERY); xComponent->dispose();

} We need also an event listener. Here is the corresponding code : [cpp] //Listing 17 action performed event listener // C++ // Don't forget the #include <cppuhelper/implbase1.hxx> typedef ::cppu::WeakImplHelper1< ::com::sun::star::awt::XActionListener > ActionListenerHelper; /** action listener

• /

class ActionListenerImpl : public ActionListenerHelper { private : sal_Int32 _nCounts; Reference< XControlContainer > _xControlCont; //XControlContainer _xControlCont; ReflectionHelper *refHelp; Sequence <OUString> methods,properties,services,types;

public :

ActionListenerImpl(const Reference< XControlContainer >& xControlCont,ReflectionHelper *rHelper) { _xControlCont = xControlCont; _nCounts = 0; refHelp = rHelper; methods = refHelp->getMethods(); properties = refHelp->getPropertiesWithValues(); services = refHelp->getServices(); types = refHelp->getTypes(); }

// XEventListener

virtual void SAL_CALL disposing (const com::sun::star::lang::EventObject& aEventObj ) throw(::com::sun::star::uno::RuntimeException) {

// _xControlCont = NULL;

1. ifdef DEBUG

printf("object listened to will be disposed\n");

1. endif

}

// XActionListener virtual void SAL_CALL actionPerformed (const ::com::sun::star::awt::ActionEvent& rEvent ) throw ( RuntimeException) { OUString OUStr; // set label text Reference< XControl > label = _xControlCont->getControl(OUString::createFromAscii("Label1"));

// Don't forget to add : #include <com/sun/star/awt/XTextComponent.hpp> // Don't forget to add "com.sun.star.awt.XTextComponent \" in the makefile Reference< XTextComponent > xLabel(label,UNO_QUERY); switch (_nCounts%4){ case 0 : for (int i=0;i<methods.getLength();i++){ if(i==0) xLabel->setText(methods[i] + OUString::createFromAscii("\n"));else xLabel->insertText (xLabel->getSelection(), methods[i] + OUString::createFromAscii("\n")); } xLabel->insertText (xLabel->getSelection(), OUString::createFromAscii("******** Methods : ") + OUStr.valueOf((sal_Int32)methods.getLength())+ OUString::createFromAscii("\n")); break; case 1 :for (int i=0;i<properties.getLength();i++){ if(i==0) xLabel->setText(properties[i] + OUString::createFromAscii("\n"));else xLabel->insertText (xLabel->getSelection(), properties[i] + OUString::createFromAscii("\n")); } xLabel->insertText (xLabel->getSelection(), OUString::createFromAscii("******** Properties : ") + OUStr.valueOf((sal_Int32)properties.getLength())+ OUString::createFromAscii("\n")); break; case 2 :for (int i=0;i<services.getLength();i++){ if(i==0) xLabel->setText(services[i] + OUString::createFromAscii("\n"));else xLabel->insertText (xLabel->getSelection(), services[i] + OUString::createFromAscii("\n")); } xLabel->insertText (xLabel->getSelection(), OUString::createFromAscii("******** Services : ") + OUStr.valueOf((sal_Int32)services.getLength())+ OUString::createFromAscii("\n")); break; case 3 :for (int i=0;i<types.getLength();i++){ if(i==0) xLabel->setText(types[i] + OUString::createFromAscii("\n"));else xLabel->insertText (xLabel->getSelection(), types[i] + OUString::createFromAscii("\n")); } xLabel->insertText (xLabel->getSelection(), OUString::createFromAscii("******** Types - Interfaces : ") + OUStr.valueOf((sal_Int32)types.getLength())+ OUString::createFromAscii("\n")); break; }

// increase click counter _nCounts++;

}

}; Using this helper is easy : here is an example : [cpp] //Listing 18 Using this helper // C++ main( ) { //retrieve an instance of the remote service manager Reference< XMultiServiceFactory > xServiceManager;

   	xServiceManager = ooConnect();
   	if( xServiceManager.is() ){
       	printf( "Connected sucessfully to the office\n" );
   	}

//get the desktop service using createInstance returns an XInterface type

   	Reference< XInterface  > Desktop = xServiceManager->createInstance(
   		OUString::createFromAscii( "com.sun.star.frame.Desktop" ));

//query for the XComponentLoader interface

   	Reference< XComponentLoader > rComponentLoader (Desktop, UNO_QUERY);
   	if( rComponentLoader.is() ){
       	printf( "XComponentloader successfully instanciated\n" );
   	}

Any toInspect; // I want to inspect rDesktop object : toInspect <<= rComponentLoader; // need a service manager ReflectionHelper *Reflect = new (ReflectionHelper)(toInspect,xServiceManager);

Reflect->printOut();

return 0; } The corresponding result is given in the Figure below :

Please click on ">>" button to see the other informations.

See also

• Using C++ with OOo SDK : Main Page
• Writing a Program to Control OpenOffice.org, by Franco Pingiori — Part 1 and Part 2, Linux Journal
• Bernard Marcelly's XRay OOoBasic tool and a XRay tool description in this wiki.