gwt.material.design.client.base.viewport.ViewPortFallback Maven / Gradle / Ivy
/*
* #%L
* GwtMaterial
* %%
* Copyright (C) 2015 - 2017 GwtMaterialDesign
* %%
* 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
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*/
package gwt.material.design.client.base.viewport;
/**
* View Port Fallback.
*
* Return true to continue propagating view port detection, false to break.
*
* Note that if {@link ViewPortHandler#propagateFallback(boolean)} is not true,
* this will only be called if no {@link Resolution} matches are made.
* Otherwise the fallback is called upon every failed {@link Resolution} match
* and can be propagated (or not propagated) with its call result.
*
* @author Ben
*/
public interface ViewPortFallback {
/**
* Fallback call.
*
* @param viewPort the view port that wasn't detected.
* @return true to continue propagating view port detection, false to break.
*/
boolean call(ViewPortRect viewPort);
}