Going further with Dialog and Component

In the previous chapter we use and program only two kinds of control in our dialog. We intend in this chapter to further and use a lot of control and then see how things work in this area. We begin again with our counter.

Counter with Numeric Field

When we design the dialog working with our counter, we use two text controls for our numeric data. Because text controls are often used our preceding example is important, but it's time now to improve our design and use a numeric field control. Because the dialog aspec is unchanged we don't provide a snapshot.

Have a look at com.sun.star.awt.XNumericField interface and see what can be done with this interface : only getvalue and setValue will be used in this section, but you can play with other methods. We provide only the callHandlerMethod function method. Here is the corresponding code.

sal_Bool SAL_CALL MyCounterImpl::callHandlerMethod(const Reference< XDialog >& xDialog,const Any& EventObject,const OUString & MethodName ) throw(WrappedTargetException, RuntimeException ){
  if (MethodName.equalsAscii("foo1")){//increment
	increment();
	return sal_True;
  }
  if (MethodName.equalsAscii("foo2")){//decrement
	decrement();
	return sal_True;
  }
  if (MethodName.equalsAscii("foo3")){ //setCount
	Reference< XControlContainer > xControlContainer(xDialog,UNO_QUERY);
	Reference< XControl > xControl=xControlContainer->getControl(OUString::createFromAscii("NumericField1"));
	Reference< XNumericField > xNumericField(xControl,UNO_QUERY);
	setCount((sal_Int32)xNumericField->getValue());
	return sal_True;  
  } 
  if (MethodName.equalsAscii("foo4")){ //getCount
	Reference< XControlContainer > xControlContainer(xDialog,UNO_QUERY);
	Reference< XControl > xControl=xControlContainer->getControl(OUString::createFromAscii("NumericField2"));
	Reference< XNumericField > xNumericField(xControl,UNO_QUERY);
	xNumericField->setValue(getCount());
	return sal_True;
   }
  return sal_False;
}

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See also

• French version of this chapter
• Constructing Components
• The corresponding paragraph in Developer's Guide
• Generic UNO Interfaces for complex toolbar controls
• C++ and UNO tutorial
• Service Declaration
• Registering properties
• UNO tutorial
• UNO IDL
• Extensions Packager (BasicAddonBuilder from Paolo Mantovani)
• BASIC UNO Object Browser : You can see the corresponding code as a complex component.
• Minimal Java Component
• OOoBasic Guide
• Managing Dialogs in OOoBasic.
• Contextual Objects in OOoBasic

Using Radio buttons

We want use radio button to select the increment or decrement. Here is a snapshot of our dialog :

For this problem the com.sun.star.awt.XRadioButton interface is your friend.

sal_Bool SAL_CALL MyCounterImpl::callHandlerMethod(const Reference< XDialog >& xDialog,const Any& EventObject,const OUString & MethodName ) throw(WrappedTargetException, RuntimeException ){
  if (MethodName.equalsAscii("foo1")){//increment
        Reference< XControlContainer > xControlContainer(xDialog,UNO_QUERY);
	Reference< XControl > xControl=xControlContainer->getControl(OUString::createFromAscii("OptionButton1"));
	Reference< XRadioButton > xRadioButton(xControl,UNO_QUERY);
	if (xRadioButton->getState())  m_nDelta=1;
	xControl=xControlContainer->getControl(OUString::createFromAscii("OptionButton2"));
	Reference< XRadioButton > xRadioButton2(xControl,UNO_QUERY);
	if (xRadioButton2->getState())  m_nDelta=5;
	xControl=xControlContainer->getControl(OUString::createFromAscii("OptionButton3"));
	Reference< XRadioButton > xRadioButton3(xControl,UNO_QUERY);
	if (xRadioButton3->getState())  m_nDelta=10;
	increment();
	return sal_True;
  }
  if (MethodName.equalsAscii("foo2")){//decrement
	Reference< XControlContainer > xControlContainer(xDialog,UNO_QUERY);
	Reference< XControl > xControl=xControlContainer->getControl(OUString::createFromAscii("OptionButton1"));
	Reference< XRadioButton > xRadioButton(xControl,UNO_QUERY);
	if (xRadioButton->getState())  m_nDelta=1;
	xControl=xControlContainer->getControl(OUString::createFromAscii("OptionButton2"));
	Reference< XRadioButton > xRadioButton2(xControl,UNO_QUERY);
	if (xRadioButton2->getState())  m_nDelta=5;
	xControl=xControlContainer->getControl(OUString::createFromAscii("OptionButton3"));
	Reference< XRadioButton > xRadioButton3(xControl,UNO_QUERY);
	if (xRadioButton3->getState())  m_nDelta=10;
	decrement();
	return sal_True;
  }
  if (MethodName.equalsAscii("foo3")){ //setCount
	Reference< XControlContainer > xControlContainer(xDialog,UNO_QUERY);
	Reference< XControl > xControl=xControlContainer->getControl(OUString::createFromAscii("NumericField1"));
	Reference< XNumericField > xNumericField(xControl,UNO_QUERY);
	setCount((sal_Int32)xNumericField->getValue());
	return sal_True;  
  } 
  if (MethodName.equalsAscii("foo4")){ //getCount
	Reference< XControlContainer > xControlContainer(xDialog,UNO_QUERY);
	Reference< XControl > xControl=xControlContainer->getControl(OUString::createFromAscii("NumericField2"));
	Reference< XNumericField > xNumericField(xControl,UNO_QUERY);
	xNumericField->setValue(getCount());
	return sal_True;
   }
  return sal_False;
}