/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



import com.sun.star.uno.*;
import com.sun.star.lang.*;
import com.sun.star.util.*;
import com.sun.star.beans.*;
import com.sun.star.container.*;
import com.sun.star.awt.*;
import com.sun.star.form.*;


/** provides global helpers
*/
public class FLTools
{
	/* ------------------------------------------------------------------ */
	static void dump_Object( Object aObject )
	{
		XServiceInfo xSI = UNO.queryServiceInfo( aObject );
		if ( null != xSI )
			System.out.println( "dumping object with name \"" + xSI.getImplementationName() + "\"" );
		else
			System.out.println( "object has no service info!" );
	}

	/* ------------------------------------------------------------------ */
	/** translates a string containing an URL into a complete
		<type scope="com.sun.star.util">URL</type> object.
	*/
	static public URL parseURL( String sURL, XComponentContext xCtx ) throws java.lang.Exception
	{
		URL[] aURL = new URL[] { new URL() };
		aURL[0].Complete = sURL;
		// need an URLTransformer
		XURLTransformer xTransformer = (XURLTransformer)UnoRuntime.queryInterface(
			XURLTransformer.class,
            xCtx.getServiceManager().createInstanceWithContext(
                "com.sun.star.util.URLTransformer", xCtx ) );
		xTransformer.parseStrict( aURL );

		return aURL[0];
	}

	/* ------------------------------------------------------------------ */
	/** returns the name of the given form component
	*/
	public static String getName( Object aFormComponent ) throws com.sun.star.uno.Exception
	{
		XNamed xNamed = (XNamed)UnoRuntime.queryInterface( XNamed.class,
			aFormComponent );
		String sName = "";
		if ( null != xNamed )
			sName = xNamed.getName();
		return sName;
	}

	/* ------------------------------------------------------------------ */
	/** returns the label of the given form component
	*/
	public static String getLabel( Object aFormComponent ) throws com.sun.star.uno.Exception
	{
		String sLabel = "";

		XPropertySet xProps = UNO.queryPropertySet( aFormComponent );
		XPropertySetInfo xPSI = ( null != xProps ) ? xProps.getPropertySetInfo() : null;
		if ( null == xPSI )
		{	// no property set or no property set info
			// can't do anything except falling back to the name
			return getName( aFormComponent );
		}

		// first check if the component has a LabelControl
		if ( xPSI.hasPropertyByName( "LabelControl" ) )
			sLabel = getLabel( xProps.getPropertyValue( "LabelControl" ) );

		// no LabelControl or no label at the LabelControl
		if ( 0 == sLabel.length() )
		{
			// a "Label" property?
			if ( xPSI.hasPropertyByName( "Label" ) )
				sLabel = (String)xProps.getPropertyValue( "Label" );

			if ( 0 == sLabel.length() )
			{	// no Label property or no label set
				// -> fallback to the component name
				sLabel = getName( aFormComponent );
			}
		}

		return sLabel;
	}

	/* ------------------------------------------------------------------ */
	/** retrieves the index of a form component within it's parent
	*/
	static public int getIndexInParent( Object aContainer, Object aElement ) throws com.sun.star.uno.Exception
	{
		int nIndex = -1;

		// norm the element
		XInterface xElement = (XInterface)UnoRuntime.queryInterface(
			XInterface.class, aElement );

		// get the container
		XIndexContainer xIndexCont = UNO.queryIndexContainer( aContainer );
		if ( null != xIndexCont )
		{
			// loop through all children
			int nCount = xIndexCont.getCount();
			for ( int i = 0; i < nCount; ++i )
			{
				// compare with the element
				XInterface xCurrent = (XInterface)UnoRuntime.queryInterface(
					XInterface.class, xIndexCont.getByIndex( 0 ) );
				if ( xCurrent.equals( xElement ) )
				{	// found
					nIndex = i;
					break;
				}
			}
		}

		// outta here
		return nIndex;
	}

	/* ------------------------------------------------------------------ */
	/** retrieves the parent of the given object
	*/
	static Object getParent( Object aComponent, Class aInterfaceClass )
	{
		XChild xAsChild = (XChild)UnoRuntime.queryInterface( XChild.class, aComponent );

		return UnoRuntime.queryInterface( aInterfaceClass, xAsChild.getParent() );
	}

	/* ------------------------------------------------------------------ */
	/** retrieves the parent of the given object
	*/
	static XPropertySet getParent( Object aComponent )
	{
		return (XPropertySet)getParent( aComponent, XPropertySet.class );
	}

	/* ------------------------------------------------------------------ */
	/** disposes the component given
	*/
	static public void disposeComponent( Object xComp ) throws java.lang.RuntimeException
	{
		XComponent xComponent = (XComponent)UnoRuntime.queryInterface( XComponent.class,
			xComp );
		if ( null != xComponent )
			xComponent.dispose();
	}

	/* ------------------------------------------------------------------ */
	/** get's the XControlModel for a control
	*/
	static public Object getModel( Object aControl, Class aInterfaceClass )
	{
		XControl xControl = (XControl)UnoRuntime.queryInterface(
			XControl.class, aControl );
		XControlModel xModel = null;
		if ( null != xControl )
			xModel = xControl.getModel();

		return UnoRuntime.queryInterface( aInterfaceClass, xModel );
	}

	/* ------------------------------------------------------------------ */
	/** retrieves the type of a form component.
		<p>Speaking strictly, the function recognizes more than form components. Especially,
		it survives a null argument. which means it can be safely applied to the a top-level
		forms container; and it is able to classify grid columns (which are no form components)
		as well.</p>
	*/
	static public String classifyFormComponentType( XPropertySet xComponent ) throws com.sun.star.uno.Exception
	{
		String sType = "<unknown component>";

		XServiceInfo xSI = UNO.queryServiceInfo( xComponent );

		XPropertySetInfo xPSI = null;
		if ( null != xComponent )
			xPSI = xComponent.getPropertySetInfo();

		if ( ( null != xPSI ) && xPSI.hasPropertyByName( "ClassId" ) )
		{
			// get the ClassId property
			XPropertySet xCompProps = UNO.queryPropertySet( xComponent );

			Short nClassId = (Short)xCompProps.getPropertyValue( "ClassId" );
			switch ( nClassId.intValue() )
			{
				case FormComponentType.COMMANDBUTTON: sType = "Command button"; break;
				case FormComponentType.RADIOBUTTON	: sType = "Radio button"; break;
				case FormComponentType.IMAGEBUTTON	: sType = "Image button"; break;
				case FormComponentType.CHECKBOX 	: sType = "Check Box"; break;
				case FormComponentType.LISTBOX		: sType = "List Box"; break;
				case FormComponentType.COMBOBOX 	: sType = "Combo Box"; break;
				case FormComponentType.GROUPBOX 	: sType = "Group Box"; break;
				case FormComponentType.FIXEDTEXT	: sType = "Fixed Text"; break;
				case FormComponentType.GRIDCONTROL	: sType = "Grid Control"; break;
				case FormComponentType.FILECONTROL	: sType = "File Control"; break;
				case FormComponentType.HIDDENCONTROL: sType = "Hidden Control"; break;
				case FormComponentType.IMAGECONTROL : sType = "Image Control"; break;
				case FormComponentType.DATEFIELD	: sType = "Date Field"; break;
				case FormComponentType.TIMEFIELD	: sType = "Time Field"; break;
				case FormComponentType.NUMERICFIELD : sType = "Numeric Field"; break;
				case FormComponentType.CURRENCYFIELD: sType = "Currency Field"; break;
				case FormComponentType.PATTERNFIELD : sType = "Pattern Field"; break;

				case FormComponentType.TEXTFIELD	:
					// there are two known services with this class id: the usual text field,
					// and the formatted field
					sType = "Text Field";
					if ( ( null != xSI ) && xSI.supportsService( "com.sun.star.form.component.FormattedField" ) )
					{
						sType = "Formatted Field";
					}
					break;

				default:
					break;
			}
		}
		else
		{
			if ( ( null != xSI ) && xSI.supportsService( "com.sun.star.form.component.DataForm" ) )
			{
				sType = "Form";
			}
		}

		return sType;
	}

};