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package org.apache.tapestry.valid; |
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import org.apache.tapestry.AbstractComponent; |
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import org.apache.tapestry.BindingException; |
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import org.apache.tapestry.IForm; |
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import org.apache.tapestry.IMarkupWriter; |
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import org.apache.tapestry.IRequestCycle; |
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import org.apache.tapestry.Tapestry; |
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import org.apache.tapestry.TapestryUtils; |
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import org.apache.tapestry.form.IFormComponent; |
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public abstract class FieldLabel extends AbstractComponent |
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{ |
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public abstract boolean isPrerender(); |
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protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) |
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{ |
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IForm form = TapestryUtils.getForm(cycle, this); |
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IFormComponent field = getField(); |
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if (field != null && isPrerender()) |
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form.prerenderField(writer, field, getLocation()); |
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if (cycle.isRewinding()) |
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return; |
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String displayName = getDisplayName(); |
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if (displayName == null) |
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{ |
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if (field == null) |
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throw Tapestry.createRequiredParameterException(this, "field"); |
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displayName = field.getDisplayName(); |
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if (displayName == null) |
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throw new BindingException(ValidMessages.noDisplayName(this, |
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field), this, null, getBinding("field"), null); |
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} |
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IValidationDelegate delegate = form.getDelegate(); |
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String id = (field == null) ? null : field.getClientId(); |
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if (field != null) |
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delegate.writeLabelPrefix(field, writer, cycle); |
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writer.begin("label"); |
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if (id != null) |
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writer.attribute("for", id); |
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delegate.writeLabelAttributes(writer, cycle, field); |
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renderInformalParameters(writer, cycle); |
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delegate.beforeLabelText(writer, cycle, field); |
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writer.print(displayName, getRaw()); |
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delegate.afterLabelText(writer, cycle, field); |
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writer.end(); |
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if (field != null) |
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delegate.writeLabelSuffix(field, writer, cycle); |
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} |
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public abstract String getDisplayName(); |
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public abstract IFormComponent getField(); |
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public abstract boolean getRaw(); |
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} |