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package org.seasar.cubby.tags; |
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import static org.seasar.cubby.tags.TagUtils.addClassName; |
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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.getOutputValues; |
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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.framework.beans.BeanDesc; |
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import org.seasar.framework.beans.PropertyDesc; |
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import org.seasar.framework.beans.factory.BeanDescFactory; |
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import org.seasar.framework.log.Logger; |
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import org.seasar.framework.message.MessageFormatter; |
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49 | 94 | public class SelectTag extends DynamicAttributesTagSupport { |
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51 | 1 | private static final Logger logger = Logger.getLogger(SelectTag.class); |
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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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68 | 13 | private Boolean emptyOption = Boolean.TRUE; |
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private String emptyOptionLabel; |
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public void setItems(final Object items) { |
82 | 13 | this.items = items; |
83 | 13 | } |
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public void setLabelProperty(final String labelProperty) { |
92 | 6 | this.labelProperty = labelProperty; |
93 | 6 | } |
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public void setValueProperty(final String valueProperty) { |
102 | 7 | this.valueProperty = valueProperty; |
103 | 7 | } |
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public void setEmptyOption(final Boolean emptyOption) { |
112 | 2 | this.emptyOption = emptyOption; |
113 | 2 | } |
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public void setEmptyOptionLabel(final String emptyOptionLabel) { |
122 | 3 | this.emptyOptionLabel = emptyOptionLabel; |
123 | 3 | } |
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public void setName(final String name) { |
132 | 13 | this.name = name; |
133 | 13 | } |
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@Override |
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public void doTag() throws JspException, IOException { |
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.getDynamicAttribute(); |
144 | 13 | final String[] outputValues = getOutputValues(this, this.name); |
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146 | 13 | if (!errors.getFields().get(this.name).isEmpty()) { |
147 | 0 | addClassName(dyn, "fieldError"); |
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} |
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150 | 13 | final Object[] value = multipleFormValues(context, outputValues, |
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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(MessageFormatter.getMessage( |
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"ECUB1001", new Object[] { "items", 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 = DynamicAttributesTagSupport |
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.toString(itemAdaptor.getItemValue(item)); |
205 | 36 | final String labelValue = DynamicAttributesTagSupport |
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.toString(itemAdaptor.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=\"true\""; |
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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(MessageFormatter.getMessage( |
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"ECUB1002", new Object[] { "items", "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) { |
279 | 30 | final BeanDesc beanDesc = BeanDescFactory.getBeanDesc(bean |
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.getClass()); |
281 | 30 | final PropertyDesc propertyDesc = beanDesc |
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.getPropertyDesc(propertyName); |
283 | 30 | return propertyDesc.getValue(bean); |
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} |
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} |
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288 | 13 | private class EntryItemAdaptor implements ItemAdaptor { |
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290 | 7 | EntryItemAdaptor() { |
291 | 7 | if (valueProperty != null) { |
292 | 2 | logger.log("WCUB1001", new Object[] { "items", |
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Map.class.getSimpleName(), "valueProperty", |
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valueProperty, |
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Entry.class.getSimpleName() + "#getKey()" }); |
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} |
297 | 7 | if (labelProperty != null) { |
298 | 2 | logger.log("WCUB1002", new Object[] { "items", |
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Map.class.getSimpleName(), "labelProperty", |
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labelProperty, |
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Entry.class.getSimpleName() + "#getValue()" }); |
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} |
303 | 7 | } |
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public Object getItemValue(final Object item) { |
309 | 21 | return ((Entry<?, ?>) item).getKey(); |
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} |
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public Object getLabelValue(final Object item) { |
316 | 21 | return ((Entry<?, ?>) item).getValue(); |
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} |
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} |
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} |