/*
* This library is part of the Acacia Editor -
* an open source inline and form based content editor for GWT.
*
* Copyright (c) Alkacon Software GmbH (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
*
* 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 com.alkacon.acacia.client.ui;
import com.alkacon.acacia.client.css.I_LayoutBundle;
import com.alkacon.geranium.client.dnd.DNDHandler.Orientation;
import com.alkacon.geranium.client.dnd.I_Draggable;
import com.alkacon.geranium.client.dnd.I_DropTarget;
import com.alkacon.geranium.client.ui.HighlightingBorder;
import com.alkacon.geranium.client.util.DomUtil;
import com.alkacon.geranium.client.util.PositionBean;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.RootPanel;
/**
* The attribute values panel.<p>
*/
public class ValuePanel extends FlowPanel implements I_DropTarget {
/** The current place holder. */
protected Element m_placeholder;
/** The placeholder position index. */
protected int m_placeholderIndex = -1;
/** The highlighting border. */
private HighlightingBorder m_highlighting;
/**
* Constructor.<p>
*/
public ValuePanel() {
setStyleName(I_LayoutBundle.INSTANCE.form().attribute());
}
/**
* @see com.alkacon.geranium.client.dnd.I_DropTarget#checkPosition(int, int, com.alkacon.geranium.client.dnd.DNDHandler.Orientation)
*/
public boolean checkPosition(int x, int y, Orientation orientation) {
return true;
}
/**
* @see com.alkacon.geranium.client.dnd.I_DropTarget#getPlaceholderIndex()
*/
public int getPlaceholderIndex() {
return m_placeholderIndex;
}
/**
* Highlights the outline of this panel.<p>
*/
public void highlightOutline() {
m_highlighting = new HighlightingBorder(
PositionBean.getInnerDimensions(getElement()),
HighlightingBorder.BorderColor.red);
m_highlighting.getElement().getStyle().setZIndex(2000000);
RootPanel.get().add(m_highlighting);
}
/**
* @see com.alkacon.geranium.client.dnd.I_DropTarget#insertPlaceholder(com.google.gwt.dom.client.Element, int, int, com.alkacon.geranium.client.dnd.DNDHandler.Orientation)
*/
public void insertPlaceholder(Element placeholder, int x, int y, Orientation orientation) {
m_placeholder = placeholder;
repositionPlaceholder(x, y, orientation);
}
/**
* @see com.alkacon.geranium.client.dnd.I_DropTarget#onDrop(com.alkacon.geranium.client.dnd.I_Draggable)
*/
public void onDrop(I_Draggable draggable) {
// nothing to do
}
/**
* Removes the highlighting border.<p>
*/
public void removeHighlighting() {
if (m_highlighting != null) {
m_highlighting.removeFromParent();
m_highlighting = null;
}
}
/**
* @see com.alkacon.geranium.client.dnd.I_DropTarget#removePlaceholder()
*/
public void removePlaceholder() {
if (m_placeholder == null) {
return;
}
m_placeholder.removeFromParent();
m_placeholder = null;
m_placeholderIndex = -1;
}
/**
* @see com.alkacon.geranium.client.dnd.I_DropTarget#repositionPlaceholder(int, int, com.alkacon.geranium.client.dnd.DNDHandler.Orientation)
*/
public void repositionPlaceholder(int x, int y, Orientation orientation) {
// handle vertical orientation only
m_placeholderIndex = DomUtil.positionElementInside(m_placeholder, getElement(), m_placeholderIndex, -1, y);
}
/**
* Updates the highlighting position if present.<p>
*/
public void updateHighlightingPosition() {
if (m_highlighting != null) {
m_highlighting.setPosition(PositionBean.getInnerDimensions(getElement()));
}
}
}