1 /************************************************************************* 2 * 3 * The Contents of this file are made available subject to the terms of 4 * the BSD license. 5 * 6 * Copyright 2000, 2010 Oracle and/or its affiliates. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of Sun Microsystems, Inc. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 28 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 30 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 31 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 *************************************************************************/ 34 35 import com.sun.star.uno.*; 36 import com.sun.star.container.*; 37 import com.sun.star.lang.*; 38 39 /**************************************************************************/ 40 /** an abstract interface for components doing an action on a form component 41 */ 42 interface IFormComponentAction 43 { 44 public abstract void handle( Object aFormComponent ) throws java.lang.Exception; 45 }; 46 47 /**************************************************************************/ 48 /** a helper class for travelling a form component tree 49 */ 50 class ComponentTreeTraversal implements IFormComponentAction 51 { 52 /* ------------------------------------------------------------------ */ 53 /** Indicator method to decide wether to step down the tree. 54 55 <p>The default implementation checks if the container given is a grid 56 control model or a <service scope="com.sun.star.form">FormComponents</service> 57 instance.</p> 58 */ 59 protected boolean shouldStepInto( XIndexContainer xContainer ) throws com.sun.star.uno.Exception 60 { 61 // step down the tree, if possible 62 XServiceInfo xSI = UNO.queryServiceInfo( xContainer ); 63 if ( null != xSI 64 && ( xSI.supportsService( "com.sun.star.form.FormComponents" ) 65 || xSI.supportsService( "com.sun.star.form.component.GridControl" ) 66 ) 67 ) 68 { 69 return true; 70 } 71 else 72 { 73 return false; 74 } 75 } 76 /* ------------------------------------------------------------------ */ 77 public void handle( Object aFormComponent ) throws com.sun.star.uno.Exception 78 { 79 XIndexContainer xCont = UNO.queryIndexContainer( aFormComponent ); 80 if ( ( null != xCont ) 81 && shouldStepInto( xCont ) 82 ) 83 { 84 for ( int i=0; i<xCont.getCount(); ++i ) 85 { 86 handle( xCont.getByIndex( i ) ); 87 } 88 } 89 } 90 } 91 92