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Diffstat (limited to 'odk/examples/DevelopersGuide/Forms/TableCellTextBinding.java')
| -rw-r--r-- | odk/examples/DevelopersGuide/Forms/TableCellTextBinding.java | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/odk/examples/DevelopersGuide/Forms/TableCellTextBinding.java b/odk/examples/DevelopersGuide/Forms/TableCellTextBinding.java deleted file mode 100644 index e95e02a7..00000000 --- a/odk/examples/DevelopersGuide/Forms/TableCellTextBinding.java +++ /dev/null @@ -1,210 +0,0 @@ -/************************************************************************* - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * Copyright 2000, 2010 Oracle and/or its affiliates. - * - * OpenOffice.org - a multi-platform office productivity suite - * - * This file is part of OpenOffice.org. - * - * OpenOffice.org is free software: you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License version 3 - * only, as published by the Free Software Foundation. - * - * OpenOffice.org is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License version 3 for more details - * (a copy is included in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU Lesser General Public License - * version 3 along with OpenOffice.org. If not, see - * <http://www.openoffice.org/license.html> - * for a copy of the LGPLv3 License. - * - ************************************************************************/ -import com.sun.star.uno.Type; -import com.sun.star.uno.UnoRuntime; -import com.sun.star.table.XCell; -import com.sun.star.util.XModifyListener; -import com.sun.star.beans.XPropertySet; -import com.sun.star.text.XTextRange; -import com.sun.star.form.binding.IncompatibleTypesException; - -/** a value binding to be connected to a form control - - This binding synchronizes the text contained in a table cell (which you must - pass upon construction) to the text in an XBindableValue. - - Well, in real it does not synchronize both directions. The ValueBinding - service has not much room for own activity: It allows notification of changes - in the own value, and it allows external instances to set the current value. - - Note that we implement this binding as a separate thread, which is (more or - less permanently) polling for a new text at the cell. This is unfortunate, but - sadly the Writer table cells do not support actively notifying changes in their - content to other interested parties. -*/ -public class TableCellTextBinding - extends java.lang.Thread - implements com.sun.star.form.binding.XValueBinding, - com.sun.star.util.XModifyBroadcaster -{ - private XTextRange m_cellText; - private Object m_writeSignal; - private String m_newCellText; - private String m_lastKnownCellText; - private boolean m_haveNewCellText; - private java.util.List m_listeners; - - /** Creates a new instance of TableCellTextBinding */ - public TableCellTextBinding( XCell cell ) - { - m_cellText = (XTextRange)UnoRuntime.queryInterface( XTextRange.class, cell ); - - m_newCellText = new String(); - m_listeners = new java.util.LinkedList(); - - start(); - } - - /** retrieves the list of data types which this binding can exchange - */ - public com.sun.star.uno.Type[] getSupportedValueTypes() - { - try - { - // well, only strings here ... - return new Type[] { - getStringType() - }; - } - catch( java.lang.Exception e ) - { - } - return new Type[] { }; - } - - /** retrieves the current value - */ - public Object getValue(com.sun.star.uno.Type type) throws com.sun.star.form.binding.IncompatibleTypesException - { - if ( !type.equals( getStringType() ) ) - throw new com.sun.star.form.binding.IncompatibleTypesException(); - - return m_cellText.getString(); - } - - /** sets a new value - */ - public void setValue(Object obj) throws com.sun.star.form.binding.IncompatibleTypesException - { - String text; - try - { - text = (String)obj; - } - catch( java.lang.ClassCastException e ) - { - throw new com.sun.star.form.binding.IncompatibleTypesException(); - } - // remember the new text - synchronized( m_newCellText ) - { - m_newCellText = text; - m_haveNewCellText = true; - } - // and wake up the thread which is waiting for it - synchronized( m_writeSignal ) - { - m_writeSignal.notify(); - } - } - - /** determines whether a given value type is supported - */ - public boolean supportsType(com.sun.star.uno.Type type) - { - return type.equals( getStringType() ); - } - - /** retrieves the UNO type for the string class - */ - private static final Type getStringType() - { - return new com.sun.star.uno.Type( String.class ); - } - - /** runs the thread - */ - public void run() - { - try - { - m_writeSignal = new Object(); - while ( true ) - { - // go sleep a while - synchronized( m_writeSignal ) - { - m_writeSignal.wait( 200 ); - } - - // if there's new text in the control, propagate it to the cell - synchronized ( m_newCellText ) - { - if ( m_haveNewCellText ) - { - m_cellText.setString( m_newCellText ); - m_lastKnownCellText = m_newCellText; - } - m_haveNewCellText = false; - } - - // if there's new text in the cell, propagate it to the control - String currentCellText = m_cellText.getString(); - if ( !currentCellText.equals( m_lastKnownCellText ) ) - { - m_lastKnownCellText = currentCellText; - // notify the modification - synchronized( m_listeners ) - { - com.sun.star.lang.EventObject eventSource = new com.sun.star.lang.EventObject( this ); - - java.util.Iterator loop = m_listeners.iterator(); - while ( loop.hasNext() ) - { - ((XModifyListener)loop.next()).modified( eventSource ); - } - } - } - } - } - catch( java.lang.Exception e ) - { - e.printStackTrace(System.err); - } - } - - public void addModifyListener(com.sun.star.util.XModifyListener xModifyListener) - { - synchronized( m_listeners ) - { - m_listeners.add( xModifyListener ); - } - } - - public void removeModifyListener(com.sun.star.util.XModifyListener xModifyListener) - { - synchronized( m_listeners ) - { - m_listeners.remove( xModifyListener ); - } - } - - public void disposing(com.sun.star.lang.EventObject eventObject) - { - // not interested in - } -} |