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| package org.apache.tapestry.form; |
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| import org.apache.tapestry.AbstractComponent; |
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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.PageRenderSupport; |
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| import org.apache.tapestry.TapestryUtils; |
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| import org.apache.tapestry.valid.IValidationDelegate; |
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| public abstract class AbstractFormComponent extends AbstractComponent implements IFormComponent |
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| { |
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| private static final String SELECTED_ATTRIBUTE_NAME = "org.apache.tapestry.form.SelectedField"; |
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| public abstract IForm getForm(); |
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| public abstract void setForm(IForm form); |
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| public abstract String getName(); |
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| public abstract void setName(String name); |
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| public abstract String getIdParameter(); |
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| public abstract void setClientId(String id); |
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| protected void renderIdAttribute(IMarkupWriter writer, IRequestCycle cycle)
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| { |
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| String rawId = getIdParameter();
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| if (rawId == null)
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| return;
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| String id = cycle.getUniqueId(rawId);
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| setClientId(id);
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| writer.attribute("id", id);
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| } |
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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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| setForm(form);
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| if (form.wasPrerendered(writer, this))
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| return;
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| IValidationDelegate delegate = form.getDelegate();
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| delegate.setFormComponent(this);
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| setName(form);
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| if (form.isRewinding())
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| { |
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| if (!isDisabled())
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| { |
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| rewindFormComponent(writer, cycle);
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| } |
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| } |
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| else if (!cycle.isRewinding())
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| { |
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| renderFormComponent(writer, cycle);
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| if (delegate.isInError())
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| { |
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| select(cycle);
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| } |
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| } |
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| } |
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| protected void select(IRequestCycle cycle)
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| { |
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| if (cycle.getAttribute(SELECTED_ATTRIBUTE_NAME) == null)
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| { |
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| PageRenderSupport pageRenderSupport = TapestryUtils.getOptionalPageRenderSupport(cycle);
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| if (pageRenderSupport != null)
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| { |
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| String formName = getForm().getName();
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| String fieldName = getName();
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| String script = "focus(document." + formName + "." + fieldName + ")";
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| pageRenderSupport.addInitializationScript(script);
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| cycle.setAttribute(SELECTED_ATTRIBUTE_NAME, Boolean.TRUE);
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| } |
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| } |
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| } |
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| protected void renderDelegatePrefix(IMarkupWriter writer, IRequestCycle cycle)
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| { |
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| getForm().getDelegate().writePrefix(writer, cycle, this, null);
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| } |
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| protected void renderDelegateAttributes(IMarkupWriter writer, IRequestCycle cycle)
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| getForm().getDelegate().writeAttributes(writer, cycle, this, null);
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| } |
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| protected void renderDelegateSuffix(IMarkupWriter writer, IRequestCycle cycle)
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| getForm().getDelegate().writeSuffix(writer, cycle, this, null);
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| } |
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| protected void setName(IForm form)
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| { |
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| form.getElementId(this);
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| } |
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| protected abstract void renderFormComponent(IMarkupWriter writer, IRequestCycle cycle); |
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| protected abstract void rewindFormComponent(IMarkupWriter writer, IRequestCycle cycle); |
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| } |