org.opencms.widgets.CmsVfsImageWidgetConfiguration 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 GmbH & Co. KG, 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.widgets;
import org.opencms.file.CmsObject;
import org.opencms.i18n.CmsMessages;
import org.opencms.json.JSONArray;
import org.opencms.json.JSONException;
import org.opencms.json.JSONObject;
import org.opencms.util.CmsMacroResolver;
import org.opencms.util.CmsStringUtil;
import java.util.ArrayList;
import java.util.List;
/**
* Configuration options for the VFS image widget.
*
* The configuration options are read from the configuration String of the widget.
*
* The configuration String has to be formatted as JSON object, with the following possible keys:
*
* class: optional class implementing {@link I_CmsImageWidgetDynamicConfiguration} to dynamically
* configure startup parameters and format values.formatnames: list of format names to select, with pairs of selectable value and selectable text,
* e.g. value1:optiontext1|value2:optiontext2formatvalues: corresponding format values to the format names list,
* can be dynamically generated by the dynamic configuration class.
* The list of values should contain width and height information, with a '?' as sign for dynamic size
* and with an 'x' as separator for width and height.
* Example: ['200x?', '800x600']scaleparams: default scale parameters (no width, height or crop information should be provided!)startup: the startup folder, can be dynamically generated by the provided class,
* in that case, use 'dynamic' as value.type: the startup folder type, can be 'gallery' or 'category'. Can be dynamically generated
* by the provided class, in that case, use 'dynamic' as value.usedescription: indicates if the description input field for the image should be shown or not.useformat: indicates if the format select box for the image should be shown or not.
*
* An example configuration can look like this:
* {scaleparams: 'q:70,r:2,c:CCCC00', type: 'gallery', startup: '/demo_en/images/',
* usedescription: true, useformat: true, formatnames: 'imageleft:Image left|imageright:Image right|imagetop:Image top',
* formatvalues: ['150x?', '250x300', '?x250']}
*
* @since 7.5.0
*/
public class CmsVfsImageWidgetConfiguration extends CmsGalleryWidgetConfiguration {
/** Configuration key name for the formatnames configuration. */
public static final String CONFIG_KEY_FORMATNAMES = "formatnames";
/** Configuration key name for the formatvalues configuration. */
public static final String CONFIG_KEY_FORMATVALUES = "formatvalues";
/** Configuration key name for the scaleparams configuration. */
public static final String CONFIG_KEY_SCALEPARAMS = "scaleparams";
/** Configuration key name for the usedescription configuration. */
public static final String CONFIG_KEY_USEDESCRIPTION = "usedescription";
/** Configuration key name for the useformat configuration. */
public static final String CONFIG_KEY_USEFORMAT = "useformat";
/** The type "category" for the initial image list to load. */
public static final String TYPE_CATEGORY = "category";
/** The type "gallery" for the initial image list to load. */
public static final String TYPE_GALLERY = "gallery";
/** The list of image format values matching the options for the format select box. */
private List m_formatValues;
/** The scale parameters to apply to a scaled image (e.g. quality, type). */
private String m_scaleParams;
/** The list of select options for the format select box, must contain {@link CmsSelectWidgetOption} objects. */
private List m_selectFormat;
/** The select options for the format select box as String. */
private String m_selectFormatString;
/** The flag if the description field should be shown. */
private boolean m_showDescription;
/** The flag if the format select box should be shown. */
private boolean m_showFormat;
/**
* Generates an initialized configuration for the image widget using the given configuration string.
*
* @param cms an initialized instance of a CmsObject
* @param widgetDialog the dialog where the widget is used on
* @param param the widget parameter to generate the widget for
* @param configuration the widget configuration string
*/
public CmsVfsImageWidgetConfiguration(
CmsObject cms,
CmsMessages widgetDialog,
I_CmsWidgetParameter param,
String configuration) {
super();
init(cms, widgetDialog, param, configuration);
}
/**
* Returns the list of image format values matching the options for the format select box.
*
* @return the list of image format values matching the options for the format select box
*/
public List getFormatValues() {
return m_formatValues;
}
/**
* Returns the scale parameters to apply to a scaled image (e.g. quality, type).
*
* @return scale the parameters to apply to a scaled image
*/
public String getScaleParams() {
return m_scaleParams;
}
/**
* Returns the list of select options for the format select box, must contain {@link CmsSelectWidgetOption} objects.
*
* @return the list of select options for the format select box
*/
public List getSelectFormat() {
return m_selectFormat;
}
/**
* Returns the select options for the format select box as String.
*
* The String has the following structure format name 1:localized name 1|format name 2:localized name 2|....
*
* @return the select options for the format select box
*/
public String getSelectFormatString() {
return m_selectFormatString;
}
/**
* Returns if the description field should be shown.
*
* @return true if the description field should be shown, otherwise false
*/
public boolean isShowDescription() {
return m_showDescription;
}
/**
* Returns if the format select box should be shown.
*
* @return true if the format select box should be shown, otherwise false
*/
public boolean isShowFormat() {
return m_showFormat;
}
/**
* Initializes the widget configuration using the given configuration string.
*
* @param cms an initialized instance of a CmsObject
* @param widgetDialog the dialog where the widget is used on
* @param param the widget parameter to generate the widget for
* @param configuration the widget configuration string
*/
@Override
protected void init(CmsObject cms, CmsMessages widgetDialog, I_CmsWidgetParameter param, String configuration) {
if (configuration == null) {
// no configuration String found, return
return;
}
configuration = CmsMacroResolver.resolveMacros(configuration, cms, widgetDialog);
JSONObject jsonObj = new JSONObject();
try {
jsonObj = new JSONObject(configuration);
} catch (JSONException e) {
// initialization failed
return;
}
// determine the class name that fills in values dynamically
setClassName(jsonObj.optString(CONFIG_KEY_CLASS, null));
I_CmsImageWidgetDynamicConfiguration dynConf = null;
if (getClassName() != null) {
try {
dynConf = (I_CmsImageWidgetDynamicConfiguration)Class.forName(getClassName()).newInstance();
} catch (Exception e) {
// class not found
}
}
// determine if the description field should be shown
setShowDescription(jsonObj.optBoolean(CONFIG_KEY_USEDESCRIPTION));
// determine if the format select box should be shown
setShowFormat(jsonObj.optBoolean(CONFIG_KEY_USEFORMAT));
if (isShowFormat()) {
// only parse options if the format select box should be shown
String optionsStr = (String)jsonObj.opt(CONFIG_KEY_FORMATNAMES);
setSelectFormatString(optionsStr);
setSelectFormat(CmsSelectWidgetOption.parseOptions(optionsStr));
// get the corresponding format values as well
JSONArray formatValues = jsonObj.optJSONArray(CONFIG_KEY_FORMATVALUES);
if (formatValues != null) {
List formatValueList = new ArrayList(formatValues.length());
for (int i = 0; i < formatValues.length(); i++) {
formatValueList.add(formatValues.optString(i));
}
setFormatValues(formatValueList);
}
if (dynConf != null) {
setFormatValues(
dynConf.getFormatValues(cms, widgetDialog, param, getSelectFormat(), getFormatValues()));
}
}
// determine the initial image list settings
setType(jsonObj.optString(CONFIG_KEY_TYPE));
if ((CONFIG_VALUE_DYNAMIC.equals(getType()) || CmsStringUtil.isEmpty(getType())) && (dynConf != null)) {
setType(dynConf.getType(cms, widgetDialog, param));
}
setStartup(jsonObj.optString(CONFIG_KEY_STARTUP));
if ((CONFIG_VALUE_DYNAMIC.equals(getStartup()) || CmsStringUtil.isEmpty(getStartup())) && (dynConf != null)) {
setStartup(dynConf.getStartup(cms, widgetDialog, param));
}
// determine the scale parameters
setScaleParams(jsonObj.optString(CONFIG_KEY_SCALEPARAMS));
}
/**
* Sets the list of image format values matching the options for the format select box.
*
* @param formatValues the list of image format values matching the options for the format select box
*/
private void setFormatValues(List formatValues) {
m_formatValues = formatValues;
}
/**
* Sets the scale parameters to apply to a scaled image (e.g. quality, type).
*
* @param scaleParams the scale parameters to apply to a scaled image
*/
private void setScaleParams(String scaleParams) {
m_scaleParams = scaleParams;
}
/**
* Sets the list of select options for the format select box, must contain {@link CmsSelectWidgetOption} objects.
*
* @param selectFormat the list of select options for the format select box
*/
private void setSelectFormat(List selectFormat) {
m_selectFormat = selectFormat;
}
/**
* Sets the select options for the format select box as String.
*
* @param formatString the select options for the format select box as String
*/
private void setSelectFormatString(String formatString) {
m_selectFormatString = formatString;
}
/**
* Sets if the description field should be shown.
*
* @param showDescription true if the description field should be shown, otherwise false
*/
private void setShowDescription(boolean showDescription) {
m_showDescription = showDescription;
}
/**
* Sets if the format select box should be shown.
*
* @param showFormat true if the format select box should be shown, otherwise false
*/
private void setShowFormat(boolean showFormat) {
m_showFormat = showFormat;
}
/**
* Returns the values as a parameter string.
*
* @return the values as a parameter string
* */
@Override
public String getConfigString() {
String result = "";
if (m_startup != null) {
result += "&startup=" + m_startup;
}
if (m_type != null) {
result += "&type=" + m_type;
}
return result;
}
}