/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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 com.vaadin.client.ui;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.client.Profiler;
import com.vaadin.client.StyleConstants;
/**
* VCCSlayout is a layout which supports configuring it's children with CSS
* selectors
*/
public class VCssLayout extends FlowPanel {
public static final String CLASSNAME = "v-csslayout";
/**
* Default constructor
*/
public VCssLayout() {
super();
setStyleName(CLASSNAME);
addStyleName(StyleConstants.UI_LAYOUT);
}
/**
* For internal use only. May be removed or replaced in the future.
*/
public void addOrMove(Widget child, int index) {
Profiler.enter("VCssLayout.addOrMove");
if (child.getParent() == this) {
Profiler.enter("VCssLayout.addOrMove getWidgetIndex");
int currentIndex = getWidgetIndex(child);
Profiler.leave("VCssLayout.addOrMove getWidgetIndex");
if (index == currentIndex) {
Profiler.leave("VCssLayout.addOrMove");
return;
}
} else if (index == getWidgetCount()) {
// optimized path for appending components - faster especially for
// initial rendering
Profiler.enter("VCssLayout.addOrMove add");
add(child);
Profiler.leave("VCssLayout.addOrMove add");
Profiler.leave("VCssLayout.addOrMove");
return;
}
Profiler.enter("VCssLayout.addOrMove insert");
insert(child, index);
Profiler.leave("VCssLayout.addOrMove insert");
Profiler.leave("VCssLayout.addOrMove");
}
}