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Central module for Tapestry, containing interfaces to the Java
Servlet API and all core services and components.
// Copyright 2008, 2009, 2010 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.apache.tapestry5;
import org.apache.tapestry5.corelib.components.BeanEditForm;
import org.apache.tapestry5.ioc.util.IdAllocator;
import org.apache.tapestry5.services.ComponentEventRequestParameters;
import org.apache.tapestry5.services.ComponentSource;
import org.apache.tapestry5.services.PageRenderRequestParameters;
/**
* Constant values for common event names fired by Tapestry components.
*/
public class EventConstants
{
/**
* Default client event name, "action", used in most situations.
*/
public static final String ACTION = "action";
/**
* Event triggered when a page is activated (for rendering). The component event handler will be
* passed the context
* provided by the passivate event.
*/
public static final String ACTIVATE = "activate";
/**
* Event triggered when a link for a page is generated. The event handler for the page may
* provide an object, or an
* array of objects, as the context for the page. These values will become part of the page's
* context, and will be
* provided back when the page is activated.
*/
public static final String PASSIVATE = "passivate";
/**
* Invoked before {@link #PREPARE} when rendering out the form.
*
* @see org.apache.tapestry5.corelib.components.Form
*/
public static final String PREPARE_FOR_RENDER = "prepareForRender";
/**
* Invoked before {@link #PREPARE} when the form is submitted.
*
* @see org.apache.tapestry5.corelib.components.Form
*/
public static final String PREPARE_FOR_SUBMIT = "prepareForSubmit";
/**
* Invoked to let the containing component(s) prepare for the form rendering or the form
* submission.
*
* @see org.apache.tapestry5.corelib.components.Form
*/
public static final String PREPARE = "prepare";
/**
* Event type for a notification after the form has submitted. This event notification occurs on
* any form submit,
* without respect to "success" or "failure".
*
* @see org.apache.tapestry5.corelib.components.Form
*/
public static final String SUBMIT = "submit";
/**
* Event type for a notification to perform validation of submitted data. This allows a listener
* to perform
* cross-field validation. This occurs before the {@link #SUCCESS} or {@link #FAILURE} notification.
*
* @see org.apache.tapestry5.corelib.components.Form
* @deprecated As of 5.2, this event should no longer be used; the Form component now fires a {@link #VALIDATE}
* event. For compatibility, validateForm will be supported, but may be removed in a future release.
*/
public static final String VALIDATE_FORM = "validateForm";
/**
* Event type associated with clicking the cancel button inside a {@link BeanEditForm}.
*
* @since 5.2.0
*/
public static final String CANCELED = "canceled";
/**
* Event type for a notification after the form has submitted, when there are no errors in the
* validation tracker.
* This occurs before the {@link #SUBMIT} event.
*
* @see org.apache.tapestry5.corelib.components.Form
*/
public static final String SUCCESS = "success";
/**
* Event type for a notification after the form has been submitted, when there are errors in the
* validation tracker.
* This occurs before the {@link #SUBMIT} event.
*/
public static final String FAILURE = "failure";
/**
* Event type triggered by the {@link org.apache.tapestry5.corelib.components.Submit} component
* when it is the cause
* of the form submission.
*/
public static final String SELECTED = "selected";
/**
* Event triggered by some form-related components to parse a value provided by the client. This
* takes the place of a {@link org.apache.tapestry5.Translator}.
*/
public static final String PARSE_CLIENT = "parseClient";
/**
* Event triggered by some form-related components to convert a server-side value to a
* client-side string, as an
* alternative to a {@link org.apache.tapestry5.Translator}.
*/
public static final String TO_CLIENT = "toClient";
/**
* Event triggered by form-related components to validate user input. In addition, the Form component
* fires a validate event just before it fires {@link #SUCCESS} or {@link #FAILURE} as a chance
* to perform cross-form validations.
*/
public static final String VALIDATE = "validate";
/**
* Event triggered by {@link org.apache.tapestry5.corelib.components.AjaxFormLoop} to inform the
* container about the
* row removed on the client side. The event context is the object that was removed.
*/
public static final String REMOVE_ROW = "removeRow";
/**
* Event triggered by {@link org.apache.tapestry5.corelib.components.AjaxFormLoop} to inform the
* container that a
* new row has been requested. The return value from the event handler must be the newly created
* object, which must
* also be visible in the {@link org.apache.tapestry5.PrimaryKeyEncoder encoder parameter}.
*/
public static final String ADD_ROW = "addRow";
/**
* Event triggered by the {@link org.apache.tapestry5.corelib.components.Loop} component to
* inform its container of
* all the values that were supplied from the client during a form submission. The event handler
* method should have
* a single parameter, of type Object[] or type List, to receive the values.
*
* @since 5.1.0.0
*/
public static final String SYNCHRONIZE_VALUES = "synchronizeValues";
/**
* Event triggered by {@link org.apache.tapestry5.corelib.components.ProgressiveDisplay} component to inform its
* container of what context (if any) is available. The event handler may return a renderable
* object or null. If
* null is returned, the component renders its own body as the partial markup response.
*
* @since 5.1.0.1
*/
public static final String PROGRESSIVE_DISPLAY = "progressiveDisplay";
/**
* Event triggered by an {@link org.apache.tapestry5.corelib.mixins.Autocomplete} mixin to
* request completions of
* the current input. The context is the partial string provided by the client.
*
* @SINCE 5.1.0.4
*/
public static final String PROVIDE_COMPLETIONS = "provideCompletions";
/**
* Event triggered by {@link org.apache.tapestry5.corelib.components.Select} component to inform
* its
* container that Select's value has changed.
*
* @since 5.2.0
*/
public static final String VALUE_CHANGED = "valueChanged";
/**
* Event triggered during page render link generation. The first context parameter is the {@link Link} object, the
* second is the {@link PageRenderRequestParameters} from which the Link
* was created. The event is triggered on the actively rendering page.
*
* @since 5.2.0
*/
public static final String DECORATE_PAGE_RENDER_LINK = "decoratePageRenderLink";
/**
* Event triggered during component event link generation. The first context parameter is the {@link Link} object,
* the second is the {@link ComponentEventRequestParameters} from which the Link
* was created. The event is triggered on the actively rendering page, not necessarily the page
* containing the component.
*
* @since 5.2.0
*/
public static final String DECORATE_COMPONENT_EVENT_LINK = "decorateComponentEventLink";
/**
* Name of a event triggered by the form component on the {@linkplain ComponentSource#getActivePage() active page}
* to allow it to pre-allocate the names of any query parameters that might be used by the page for its own purposes
* and should not be allocated to components. An {@link IdAllocator} is passed as the event context.
*
* @since 5.2.0
*/
public static final String PREALLOCATE_FORM_CONTROL_NAMES = "preallocateFormControlNames";
}