ConfirmationInput should have resultValue

- Add flow hooks to ConfirmationInput so that user
  is able to pass a flag from an options so that
  component can bypass interactive mode.
- Fixes #445

spring-shell-core/src/main/java/org/springframework/shell/component/flow/BaseConfirmationInput.java

@@ -35,6 +35,8 @@ public abstract class BaseConfirmationInput extends BaseInput<ConfirmationInputS
 
 	private String name;
 	private Boolean defaultValue;
+	private Boolean resultValue;
+	private ResultMode resultMode;
 	private Function<ConfirmationInputContext, List<AttributedString>> renderer;
 	private List<Consumer<ConfirmationInputContext>> preHandlers = new ArrayList<>();
 	private List<Consumer<ConfirmationInputContext>> postHandlers = new ArrayList<>();
@@ -52,6 +54,18 @@ public abstract class BaseConfirmationInput extends BaseInput<ConfirmationInputS
 		return this;
 	}
 
+	@Override
+	public ConfirmationInputSpec resultValue(Boolean resultValue) {
+		this.resultValue = resultValue;
+		return this;
+	}
+
+	@Override
+	public ConfirmationInputSpec resultMode(ResultMode resultMode) {
+		this.resultMode = resultMode;
+		return this;
+	}
+
 	@Override
 	public ConfirmationInputSpec defaultValue(Boolean defaultValue) {
 		this.defaultValue = defaultValue;
@@ -113,6 +127,14 @@ public abstract class BaseConfirmationInput extends BaseInput<ConfirmationInputS
 		return defaultValue != null ? defaultValue : true;
 	}
 
+	public Boolean getResultValue() {
+		return resultValue;
+	}
+
+	public ResultMode getResultMode() {
+		return resultMode;
+	}
+
 	public Function<ConfirmationInputContext, List<AttributedString>> getRenderer() {
 		return renderer;
 	}

spring-shell-core/src/main/java/org/springframework/shell/component/flow/ComponentFlow.java

@@ -521,6 +521,11 @@ public interface ComponentFlow {
 			return confirmationInputs.stream().map(input -> {
 				ConfirmationInput selector = new ConfirmationInput(terminal, input.getName(), input.getDefaultValue());
 				Function<ComponentContext<?>, ComponentContext<?>> operation = (context) -> {
+						if (input.getResultMode() == ResultMode.ACCEPT && input.isStoreResult()
+								&& input.getResultValue() != null) {
+							context.put(input.getId(), input.getResultValue());
+							return context;
+						}
 						selector.setResourceLoader(resourceLoader);
 						selector.setTemplateExecutor(templateExecutor);
 						if (StringUtils.hasText(input.getTemplateLocation())) {

spring-shell-core/src/main/java/org/springframework/shell/component/flow/ConfirmationInputSpec.java

@@ -39,6 +39,21 @@ public interface ConfirmationInputSpec extends BaseInputSpec<ConfirmationInputSp
 	 * @return a builder
 	 */
 	ConfirmationInputSpec name(String name);
+	/**
+	 * Sets a result value.
+	 *
+	 * @param resultValue the result value
+	 * @return a builder
+	 */
+	ConfirmationInputSpec resultValue(Boolean resultValue);
+
+	/**
+	 * Sets a result mode.
+	 *
+	 * @param resultMode the result mode
+	 * @return a builder
+	 */
+	ConfirmationInputSpec resultMode(ResultMode resultMode);
 
 	/**
 	 * Sets a default value.