org.opencms.acacia.client.widgets.A_CmsEditWidget Maven / Gradle / Ivy
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/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (C) Alkacon Software (http://www.alkacon.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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 for more details.
*
* For further information about Alkacon Software, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.acacia.client.widgets;
import com.google.gwt.dom.client.Element;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.FocusWidget;
/**
* Abstract editing widget class.
*/
public abstract class A_CmsEditWidget extends FocusWidget implements I_CmsEditWidget {
/** The previous value. */
private String m_previousValue;
/**
* Constructor wrapping a specific DOM element.
*
* @param element the element to wrap
*/
protected A_CmsEditWidget(Element element) {
super(element);
m_previousValue = element.getInnerHTML();
}
/**
* @see com.google.gwt.event.logical.shared.HasValueChangeHandlers#addValueChangeHandler(com.google.gwt.event.logical.shared.ValueChangeHandler)
*/
public abstract HandlerRegistration addValueChangeHandler(ValueChangeHandler handler);
/**
* @see com.google.gwt.user.client.ui.HasValue#getValue()
*/
public String getValue() {
return getElement().getInnerText().trim();
}
/**
* @see org.opencms.acacia.client.widgets.I_CmsEditWidget#onAttachWidget()
*/
public void onAttachWidget() {
super.onAttach();
}
/**
* @see org.opencms.acacia.client.widgets.I_CmsEditWidget#owns(com.google.gwt.dom.client.Element)
*/
public boolean owns(com.google.gwt.dom.client.Element element) {
return false;
}
/**
* Fires the value change event, if the value has changed.
*
* @param force true
to force firing the event, not regarding an actually changed value
*/
protected void fireValueChange(boolean force) {
String currentValue = getValue();
if (force || !currentValue.equals(m_previousValue)) {
m_previousValue = currentValue;
ValueChangeEvent.fire(this, currentValue);
}
}
/**
* Returns the previous value.
*
* @return the previous value
*/
protected String getPreviousValue() {
return m_previousValue;
}
/**
* Sets the previous value.
*
* @param previousValue the previous value to set
*/
protected void setPreviousValue(String previousValue) {
m_previousValue = previousValue;
}
}