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TemplateBase.java
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74 lines (61 loc) · 2.18 KB
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package act.view;
import act.Act;
import act.app.ActionContext;
import act.mail.MailerContext;
import org.osgl.http.H;
import org.osgl.util.IO;
import java.util.Map;
/**
* Base class for {@link Template} implementations
*/
public abstract class TemplateBase implements Template {
@Override
public void merge(ActionContext context) {
Map<String, Object> renderArgs = context.renderArgs();
exposeImplicitVariables(renderArgs, context);
beforeRender(context);
merge(renderArgs, context.resp());
}
@Override
public String render(ActionContext context) {
Map<String, Object> renderArgs = context.renderArgs();
exposeImplicitVariables(renderArgs, context);
beforeRender(context);
return render(renderArgs);
}
@Override
public String render(MailerContext context) {
Map<String, Object> renderArgs = context.renderArgs();
exposeImplicitVariables(renderArgs, context);
beforeRender(context);
return render(renderArgs);
}
/**
* Sub class can implement this method to inject logic that needs to be done
* before rendering happening
*
* @param context
*/
protected void beforeRender(ActionContext context) {}
/**
* Sub class can implement this method to inject logic that needs to be done
* before rendering happening
*
* @param context
*/
protected void beforeRender(MailerContext context) {}
protected void merge(Map<String, Object> renderArgs, H.Response response) {
IO.writeContent(render(renderArgs), response.writer());
}
protected abstract String render(Map<String, Object> renderArgs);
private void exposeImplicitVariables(Map<String, Object> renderArgs, ActionContext context) {
for (ActionViewVarDef var : Act.viewManager().implicitActionViewVariables()) {
renderArgs.put(var.name(), var.eval(context));
}
}
private void exposeImplicitVariables(Map<String, Object> renderArgs, MailerContext context) {
for (MailerViewVarDef var : Act.viewManager().implicitMailerViewVariables()) {
renderArgs.put(var.name(), var.eval(context));
}
}
}