/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* 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
*
* 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.gwt.client.ui;
import org.opencms.gwt.client.ui.css.I_CmsLayoutBundle;
import org.opencms.gwt.client.util.CmsPositionBean;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.DivElement;
import com.google.gwt.dom.client.Style;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTML;
/**
* A Widget to display a highlighting border around a specified position.<p>
*
* @since 8.0.0
*/
public class CmsHighlightingBorder extends Composite {
/** Enumeration of available border colours. */
public enum BorderColor {
/** Color blue. */
blue(I_CmsLayoutBundle.INSTANCE.highlightCss().colorBlue()),
/** Color red. */
red(I_CmsLayoutBundle.INSTANCE.highlightCss().colorRed());
/** CSS class used to display the border colour. */
private String m_cssClass;
/**
* Constructor.<p>
*
* @param cssClass the CSS class to display the border colour
*/
private BorderColor(String cssClass) {
m_cssClass = cssClass;
}
/**
* Returns the associated CSS class.<p>
*
* @return the CSS class
*/
public String getCssClass() {
return m_cssClass;
}
}
/** The ui-binder interface for this composite. */
interface I_CmsHighlightingBorderUiBinder extends UiBinder<HTML, CmsHighlightingBorder> {
// GWT interface, nothing to do here
}
/** The border offset to the given position. */
private static final int BORDER_OFFSET = 4;
/** The border width. */
private static final int BORDER_WIDTH = 2;
/** The ui-binder instance. */
private static I_CmsHighlightingBorderUiBinder uiBinder = GWT.create(I_CmsHighlightingBorderUiBinder.class);
/** The bottom border. */
@UiField
protected DivElement m_borderBottom;
/** The left border. */
@UiField
protected DivElement m_borderLeft;
/** The right border. */
@UiField
protected DivElement m_borderRight;
/** The top border. */
@UiField
protected DivElement m_borderTop;
/**
* Constructor.<p>
*
* @param position the position data
* @param color the border color
*/
public CmsHighlightingBorder(CmsPositionBean position, BorderColor color) {
this(position.getHeight(), position.getWidth(), position.getLeft(), position.getTop(), color);
}
/**
* Constructor.<p>
*
* @param height the height
* @param width the width
* @param positionLeft the absolute left position
* @param positionTop the absolute top position
* @param color the border color
*/
public CmsHighlightingBorder(int height, int width, int positionLeft, int positionTop, BorderColor color) {
initWidget(uiBinder.createAndBindUi(this));
getWidget().addStyleName(color.getCssClass());
setPosition(height, width, positionLeft, positionTop);
}
/**
* Hides the border.<p>
*/
public void hide() {
setVisible(false);
}
/**
* Sets the border position.<p>
*
* @param position the position data
*/
public void setPosition(CmsPositionBean position) {
setPosition(position.getHeight(), position.getWidth(), position.getLeft(), position.getTop());
}
/**
* Sets the border position.<p>
*
* @param height the height
* @param width the width
* @param positionLeft the absolute left position
* @param positionTop the absolute top position
*/
public void setPosition(int height, int width, int positionLeft, int positionTop) {
positionLeft -= BORDER_OFFSET;
// make sure highlighting does not introduce additional horizontal scroll-bars
if (positionLeft < 0) {
// position left should not be negative
width += positionLeft;
positionLeft = 0;
}
width += (2 * BORDER_OFFSET) - BORDER_WIDTH;
if ((Window.getClientWidth() < (width + positionLeft)) && (Window.getScrollLeft() == 0)) {
// highlighting should not extend over the right hand
width = Window.getClientWidth() - (positionLeft + BORDER_WIDTH);
}
Style style = getElement().getStyle();
style.setLeft(positionLeft, Unit.PX);
style.setTop(positionTop - BORDER_OFFSET, Unit.PX);
setHeight((height + (2 * BORDER_OFFSET)) - BORDER_WIDTH);
setWidth(width);
}
/**
* Shows the border.<p>
*/
public void show() {
setVisible(true);
}
/**
* Sets the highlighting height.<p>
*
* @param height the height
*/
private void setHeight(int height) {
m_borderRight.getStyle().setHeight(height, Unit.PX);
m_borderLeft.getStyle().setHeight(height, Unit.PX);
m_borderBottom.getStyle().setTop(height, Unit.PX);
}
/**
* Sets the highlighting width.<p>
*
* @param width the width
*/
private void setWidth(int width) {
m_borderTop.getStyle().setWidth(width, Unit.PX);
m_borderBottom.getStyle().setWidth(width, Unit.PX);
m_borderRight.getStyle().setLeft(width, Unit.PX);
}
}