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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, field), this, null,
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| 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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| 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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| writer.print(displayName, getRaw());
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| writer.end();
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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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| } |