/**
* Copyright 2010 Google Inc.
*
* 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.waveprotocol.wave.client.scroll;
/**
* Reveals the scrolling capabilities of a view container.
*
* @param <T> type of views within this container
*/
public interface ScrollPanel<T> {
/**
* Moves the viewport so that {@code location} is at the viewport top.
*
* @param location content-space location to appear at the top of the
* viewport.
*/
void moveTo(double location);
/** @return the viewport extent of this scroller. */
Extent getViewport();
/** @return the content extent of this scroller. */
Extent getContent();
/** @return the extent of a view within this panel. */
Extent extentOf(T view);
}