001 package org.apache.myfaces.tobago.event;
002
003 /*
004 * Licensed to the Apache Software Foundation (ASF) under one or more
005 * contributor license agreements. See the NOTICE file distributed with
006 * this work for additional information regarding copyright ownership.
007 * The ASF licenses this file to You under the Apache License, Version 2.0
008 * (the "License"); you may not use this file except in compliance with
009 * the License. You may obtain a copy of the License at
010 *
011 * http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019
020 import org.apache.commons.logging.Log;
021 import org.apache.commons.logging.LogFactory;
022 import static org.apache.myfaces.tobago.TobagoConstants.ATTR_HEIGHT;
023 import static org.apache.myfaces.tobago.TobagoConstants.ATTR_LEFT;
024 import static org.apache.myfaces.tobago.TobagoConstants.ATTR_TOP;
025 import static org.apache.myfaces.tobago.TobagoConstants.ATTR_WIDTH;
026 import static org.apache.myfaces.tobago.TobagoConstants.FACET_PICKER_POPUP;
027 import org.apache.myfaces.tobago.component.ComponentUtil;
028 import org.apache.myfaces.tobago.config.ThemeConfig;
029
030 import javax.faces.component.UICommand;
031 import javax.faces.component.UIComponent;
032 import javax.faces.context.FacesContext;
033 import javax.faces.el.EvaluationException;
034 import javax.faces.el.MethodBinding;
035 import javax.faces.el.MethodNotFoundException;
036 import javax.faces.event.ActionEvent;
037 import java.util.Map;
038 import java.util.StringTokenizer;
039
040 /*
041 * User: weber
042 * Date: Jul 18, 2005
043 * Time: 3:24:46 PM
044 */
045 public class DatePickerController extends MethodBinding {
046
047 private static final Log LOG = LogFactory.getLog(DatePickerController.class);
048 public static final String OPEN_POPUP = "openPopup";
049 public static final String CLOSE_POPUP = "closePopup";
050
051 public DatePickerController() {
052 }
053
054 public Object invoke(FacesContext facesContext, Object[] objects)
055 throws EvaluationException {
056
057 if (objects[0] instanceof ActionEvent) {
058
059 UICommand command = (UICommand) ((ActionEvent) objects[0]).getSource();
060 final String commandId = command.getClientId(facesContext);
061
062 if (commandId.endsWith(OPEN_POPUP)) {
063
064 final UIComponent popup
065 = command.getFacet(FACET_PICKER_POPUP);
066 if (popup != null) {
067 popup.setRendered(true);
068 final String dimensionParameter
069 = commandId.substring(0, commandId.length() - OPEN_POPUP.length())
070 + "Dimension";
071 final String dimension = (String) facesContext.getExternalContext()
072 .getRequestParameterMap().get(dimensionParameter);
073
074 StringTokenizer st = new StringTokenizer(dimension, "x:");
075 int width = nextDimensionToken(st,
076 ThemeConfig.getValue(facesContext, popup, "DefaultPageWidth"));
077 int height = nextDimensionToken(st,
078 ThemeConfig.getValue(facesContext, popup, "DefaultPageHeight"));
079 int left = nextDimensionToken(st, -1);
080 int top = nextDimensionToken(st, -1);
081 int popupWidth = ComponentUtil.getIntAttribute(
082 popup, ATTR_WIDTH, -1);
083 int popupHeight = ComponentUtil.getIntAttribute(
084 popup, ATTR_HEIGHT, -1);
085 int popupLeft = ComponentUtil.getIntAttribute(
086 popup, ATTR_LEFT, -1);
087 int popupTop = ComponentUtil.getIntAttribute(
088 popup, ATTR_TOP, -1);
089
090 final Map<String, String> attributes = popup.getAttributes();
091 if (popupWidth == -1) {
092 popupWidth = ThemeConfig.getValue(
093 facesContext, popup, "CalendarPopupWidth");
094 attributes.put(
095 ATTR_WIDTH, String.valueOf(popupWidth));
096 }
097 if (popupHeight == -1) {
098 popupHeight = ThemeConfig.getValue(
099 facesContext, popup, "CalendarPopupHeight");
100 attributes.put(
101 ATTR_HEIGHT, String.valueOf(popupHeight));
102 }
103
104 if (popupLeft == -1) {
105 if (left != -1) {
106 int popupRight = left + (popupWidth / 2);
107 popupLeft = popupRight < width
108 ? popupRight - popupWidth
109 : width - popupWidth;
110 } else {
111 popupLeft = (width - popupWidth) / 2;
112 }
113 attributes.put(ATTR_LEFT,
114 (popupLeft > 0 ? String.valueOf(popupLeft) : "0"));
115 }
116
117 if (popupTop == -1) {
118 if (top != -1) {
119 final int fixedHeight =
120 ThemeConfig.getValue(facesContext, command, "fixedHeight");
121 int popupBottom = top + popupHeight + fixedHeight;
122 popupTop = popupBottom < height
123 ? top + fixedHeight
124 : height - popupHeight;
125 } else {
126 popupTop = (height - popupHeight) / 2;
127 }
128 attributes.put(ATTR_TOP,
129 (popupTop > 0 ? String.valueOf(popupTop) : "0"));
130 }
131 }
132 }
133
134 }
135 return null;
136 }
137
138 private int nextDimensionToken(StringTokenizer st, int defaultValue) {
139 if (st.hasMoreTokens()) {
140 try {
141 defaultValue = Integer.parseInt(st.nextToken());
142 } catch (NumberFormatException e) {
143 LOG.error("Caught: " + e.getMessage(), e);
144 }
145 }
146 return defaultValue;
147 }
148
149 public Class getType(FacesContext facesContext)
150 throws MethodNotFoundException {
151 return String.class;
152 }
153 }