org.opencms.gwt.client.ui.input.CmsLabelSelectCell Maven / Gradle / Ivy
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/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH & Co. KG (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.input;
import org.opencms.gwt.client.ui.I_CmsTruncable;
import org.opencms.gwt.client.ui.css.I_CmsConstantsBundle;
import org.opencms.gwt.client.ui.css.I_CmsInputLayoutBundle;
import com.google.gwt.canvas.client.Canvas;
import com.google.gwt.canvas.dom.client.Context2d;
/**
* This class represents a single select option in the selector of the select box.
*/
public class CmsLabelSelectCell extends A_CmsSelectCell implements I_CmsTruncable {
/** Canvas used for measuring the option size. */
private static final Canvas canvas = Canvas.createIfSupported();
/** The value of the select option. */
protected String m_value;
/** The label of which this select cell consists. */
private CmsLabel m_label = new CmsLabel();
/** The label width last used in a truncate()-call. */
private int m_labelWidth;
/** The opener text. */
private String m_openerText;
/** The text of the select option. */
private String m_text;
/** The text metrics key last used in a truncate()-call. */
private String m_textMetricsKey;
/**
* Creates a new select cell.
*
* @param value the value of the select option
* @param text the text to display for the select option
*/
public CmsLabelSelectCell(String value, String text) {
this(value, text, null);
}
/**
* Creates a new select cell.
*
* @param value the value of the select option
* @param text the text to display for the select option
* @param title the title to display on mouseover
*/
public CmsLabelSelectCell(String value, String text, String title) {
super();
m_value = value;
m_text = text;
m_openerText = text;
initWidget(m_label);
addStyleName(I_CmsInputLayoutBundle.INSTANCE.inputCss().selectBoxCell());
m_label.setText(m_text);
m_label.setTitle(title != null ? title : m_text);
}
/**
* Gets the opener text.
*
* @return the opener text
*/
public String getOpenerText() {
return m_openerText;
}
/**
* Measures the required width for this cell.
*
* @return the required width
*/
@Override
public int getRequiredWidth() {
Context2d context = canvas.getContext2d();
String fontStr = I_CmsConstantsBundle.INSTANCE.css().fontSize()
+ " "
+ I_CmsConstantsBundle.INSTANCE.css().fontFamily();
context.setFont(fontStr);
double width = context.measureText(getText()).getWidth();
return (int)(Math.ceil(width));
}
/**
* Returns the text as which the select option should be displayed to the user.
*
* @return the text of the select option
*/
public String getText() {
return m_text;
}
/**
* @see org.opencms.gwt.client.ui.input.A_CmsSelectCell#getValue()
*/
@Override
public String getValue() {
return m_value;
}
/**
* Sets the opener text.
*
* @param openerText the new opener text
*/
public void setOpenerText(String openerText) {
m_openerText = openerText;
}
/**
* Sets the text of the label.
*
* @param text the new text
*/
public void setText(String text) {
m_label.setText(text);
m_label.setTitle(text);
m_text = text;
if (m_textMetricsKey != null) {
truncate(m_textMetricsKey, m_labelWidth);
}
}
/**
* @see org.opencms.gwt.client.ui.I_CmsTruncable#truncate(java.lang.String, int)
*/
public void truncate(String textMetricsKey, int labelWidth) {
m_textMetricsKey = textMetricsKey;
m_labelWidth = labelWidth;
m_label.truncate(textMetricsKey, labelWidth);
}
}