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package org.seasar.cubby.tags; |
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import static org.seasar.cubby.internal.util.LogMessages.format; |
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import static org.seasar.cubby.tags.TagUtils.addCSSClassName; |
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import static org.seasar.cubby.tags.TagUtils.contains; |
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import static org.seasar.cubby.tags.TagUtils.errors; |
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import static org.seasar.cubby.tags.TagUtils.getFormWrapper; |
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import static org.seasar.cubby.tags.TagUtils.multipleFormValues; |
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import static org.seasar.cubby.tags.TagUtils.toAttr; |
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import java.io.IOException; |
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import java.util.Collection; |
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import java.util.Map; |
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import java.util.Map.Entry; |
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import javax.servlet.jsp.JspContext; |
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import javax.servlet.jsp.JspException; |
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import javax.servlet.jsp.JspTagException; |
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import javax.servlet.jsp.JspWriter; |
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import org.seasar.cubby.action.ActionErrors; |
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import org.seasar.cubby.controller.FormWrapper; |
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import org.seasar.cubby.spi.beans.Attribute; |
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import org.seasar.cubby.spi.beans.BeanDesc; |
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import org.seasar.cubby.spi.beans.BeanDescFactory; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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50 | 91 | public class SelectTag extends DynamicAttributesSimpleTagSupport { |
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private String name; |
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private Object items; |
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private String labelProperty; |
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private String valueProperty; |
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65 | 14 | private Boolean emptyOption = Boolean.TRUE; |
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private String emptyOptionLabel; |
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public void setItems(final Object items) { |
77 | 14 | this.items = items; |
78 | 14 | } |
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public void setLabelProperty(final String labelProperty) { |
88 | 6 | this.labelProperty = labelProperty; |
89 | 6 | } |
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public void setValueProperty(final String valueProperty) { |
99 | 7 | this.valueProperty = valueProperty; |
100 | 7 | } |
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public void setEmptyOption(final Boolean emptyOption) { |
109 | 2 | this.emptyOption = emptyOption; |
110 | 2 | } |
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public void setEmptyOptionLabel(final String emptyOptionLabel) { |
119 | 3 | this.emptyOptionLabel = emptyOptionLabel; |
120 | 3 | } |
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public void setName(final String name) { |
129 | 14 | this.name = name; |
130 | 14 | } |
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@Override |
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public void doTag() throws JspException, IOException { |
137 | 14 | if (items == null) { |
138 | 1 | throw new JspTagException(format("ECUB1005")); |
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} |
140 | 13 | final JspContext context = this.getJspContext(); |
141 | 13 | final JspWriter out = context.getOut(); |
142 | 13 | final ActionErrors errors = errors(context); |
143 | 13 | final Map<String, Object> dyn = this.getDynamicAttributes(); |
144 | 13 | final FormWrapper formWrapper = getFormWrapper(this); |
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146 | 13 | if (!errors.getFields().get(this.name).isEmpty()) { |
147 | 0 | addCSSClassName(dyn, "fieldError"); |
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} |
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150 | 13 | final Object[] value = multipleFormValues(context, formWrapper, |
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this.name); |
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153 | 13 | out.write("<select name=\""); |
154 | 13 | out.write(this.name); |
155 | 13 | out.write("\" "); |
156 | 13 | out.write(toAttr(dyn)); |
157 | 13 | out.write(">\n"); |
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159 | 13 | if (emptyOption) { |
160 | 11 | out.write("<option value=\"\">"); |
161 | 11 | out.write(CubbyFunctions.out(emptyOptionLabel)); |
162 | 11 | out.write("</option>\n"); |
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} |
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165 | 13 | if (items != null && items.getClass().isArray()) { |
166 | 0 | final OptionWriter optionWriter = new OptionWriter( |
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new BeanItemAdaptor()); |
168 | 0 | for (final Object item : (Object[]) items) { |
169 | 0 | optionWriter.write(out, item, value); |
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} |
171 | 0 | } else { |
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final OptionWriter optionWriter; |
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final Collection<?> collection; |
174 | 13 | if (items instanceof Collection<?>) { |
175 | 6 | optionWriter = new OptionWriter(new BeanItemAdaptor()); |
176 | 5 | collection = (Collection<?>) items; |
177 | 7 | } else if (items instanceof Map<?, ?>) { |
178 | 7 | optionWriter = new OptionWriter(new EntryItemAdaptor()); |
179 | 7 | collection = ((Map<?, ?>) items).entrySet(); |
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} else { |
181 | 0 | throw new JspTagException(format("ECUB1001", "items", |
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items == null ? null : items.getClass())); |
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} |
184 | 12 | for (final Object item : collection) { |
185 | 36 | optionWriter.write(out, item, value); |
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} |
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} |
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189 | 12 | out.write("</select>"); |
190 | 12 | } |
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private static class OptionWriter { |
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private final ItemAdaptor itemAdaptor; |
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196 | 12 | OptionWriter(final ItemAdaptor itemAdaptor) { |
197 | 12 | this.itemAdaptor = itemAdaptor; |
198 | 12 | } |
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void write(final JspWriter out, final Object item, final Object value) |
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throws IOException { |
202 | 36 | out.write("<option value=\""); |
203 | 36 | final String itemValue = TagUtils.toString(itemAdaptor |
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.getItemValue(item)); |
205 | 36 | final String labelValue = TagUtils.toString(itemAdaptor |
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.getLabelValue(item)); |
207 | 36 | out.write(CubbyFunctions.out(itemValue)); |
208 | 36 | out.write("\" "); |
209 | 36 | out.write(selected(itemValue, value)); |
210 | 36 | out.write(">"); |
211 | 36 | out.write(CubbyFunctions.out(labelValue)); |
212 | 36 | out.write("</option>\n"); |
213 | 36 | } |
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private String selected(final String value, final Object values) { |
216 | 36 | if (value == null || values == null) { |
217 | 0 | return ""; |
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} |
219 | 36 | if (contains(values, value)) { |
220 | 14 | return "selected=\"selected\""; |
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} else { |
222 | 22 | return ""; |
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} |
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} |
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} |
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private interface ItemAdaptor { |
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Object getItemValue(Object item); |
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Object getLabelValue(Object item); |
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} |
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private class BeanItemAdaptor implements ItemAdaptor { |
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251 | 6 | BeanItemAdaptor() throws JspTagException { |
252 | 6 | if (valueProperty == null) { |
253 | 1 | throw new JspTagException(format("ECUB1002", "items", |
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"valueProperty")); |
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} |
256 | 5 | } |
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public Object getItemValue(final Object item) { |
262 | 18 | return property(item, valueProperty); |
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} |
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public Object getLabelValue(final Object item) { |
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final Object labelValue; |
270 | 15 | if (labelProperty == null) { |
271 | 3 | labelValue = getItemValue(item); |
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} else { |
273 | 12 | labelValue = property(item, labelProperty); |
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} |
275 | 15 | return labelValue; |
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} |
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private Object property(final Object bean, final String propertyName) { |
288 | 30 | final BeanDesc beanDesc = BeanDescFactory.getBeanDesc(bean |
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.getClass()); |
290 | 30 | final Attribute attribute = beanDesc |
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.getPropertyAttribute(propertyName); |
292 | 30 | return attribute.getValue(bean); |
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} |
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} |
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297 | 14 | private class EntryItemAdaptor implements ItemAdaptor { |
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299 | 7 | EntryItemAdaptor() { |
300 | 7 | if (valueProperty != null) { |
301 | 2 | final Logger logger = LoggerFactory.getLogger(SelectTag.class); |
302 | 2 | if (logger.isWarnEnabled()) { |
303 | 2 | logger.warn(format("WCUB1001", "items", Map.class |
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.getSimpleName(), "valueProperty", valueProperty, |
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Entry.class.getSimpleName() + "#getKey()")); |
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} |
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} |
308 | 7 | if (labelProperty != null) { |
309 | 2 | final Logger logger = LoggerFactory.getLogger(SelectTag.class); |
310 | 2 | if (logger.isWarnEnabled()) { |
311 | 2 | logger.warn(format("WCUB1002", "items", Map.class |
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.getSimpleName(), "labelProperty", labelProperty, |
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Entry.class.getSimpleName() + "#getValue()")); |
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} |
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} |
316 | 7 | } |
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public Object getItemValue(final Object item) { |
322 | 21 | return ((Entry<?, ?>) item).getKey(); |
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} |
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public Object getLabelValue(final Object item) { |
329 | 21 | return ((Entry<?, ?>) item).getValue(); |
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} |
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} |
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} |