001// Licensed under the Apache License, Version 2.0 (the "License");
002// you may not use this file except in compliance with the License.
003// You may obtain a copy of the License at
004//
005//     http://www.apache.org/licenses/LICENSE-2.0
006//
007// Unless required by applicable law or agreed to in writing, software
008// distributed under the License is distributed on an "AS IS" BASIS,
009// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
010// See the License for the specific language governing permissions and
011// limitations under the License.
012
013package org.apache.tapestry5.corelib.base;
014
015import org.apache.tapestry5.annotations.Import;
016import org.apache.tapestry5.annotations.Property;
017import org.apache.tapestry5.http.services.Request;
018import org.apache.tapestry5.internal.InternalConstants;
019import org.apache.tapestry5.ioc.annotations.Inject;
020
021/**
022 * Base page for Tapestry internal pages, that should suppress any application changes to the core stack's CSS.
023 * CSS from the core stack is suppressed, instead the internal stack (which exists for just this purpose)
024 * is imported.
025 *
026 * @since 5.4
027 */
028public abstract class AbstractInternalPage
029{
030    @Inject @Property(write = false)
031    protected Request request;
032
033    void setupRender()
034    {
035        request.setAttribute(InternalConstants.SUPPRESS_CORE_STYLESHEETS, true);
036    }
037
038    @Import(stack = "internal")
039    void beginRender()
040    {
041
042    }
043}