/*
* Copyright 2000-2016 JetBrains s.r.o.
*
* 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.intellij.vcs.log.ui.frame;
import javax.swing.*;
import java.awt.*;
class WrappedFlowLayout extends FlowLayout {
public WrappedFlowLayout(int hgap, int vgap) {
super(FlowLayout.LEADING, hgap, vgap);
}
@Override
public Dimension preferredLayoutSize(Container target) {
Dimension baseSize = super.preferredLayoutSize(target);
if (getAlignOnBaseline()) {
return baseSize;
}
return getWrappedSize(target);
}
public Dimension getWrappedSize(Container target) {
Container parent = SwingUtilities.getUnwrappedParent(target);
int maxWidth = parent.getWidth() - (parent.getInsets().left + parent.getInsets().right);
Insets insets = target.getInsets();
int height = insets.top + insets.bottom;
int width = insets.left + insets.right;
int rowHeight = 0;
int rowWidth = insets.left + insets.right;
boolean isVisible = false;
boolean start = true;
synchronized (target.getTreeLock()) {
for (int i = 0; i < target.getComponentCount(); i++) {
Component component = target.getComponent(i);
if (component.isVisible()) {
isVisible = true;
Dimension size = component.getPreferredSize();
if (rowWidth + getHgap() + size.width > maxWidth && !start) {
height += getVgap() + rowHeight;
width = Math.max(width, rowWidth);
rowWidth = insets.left + insets.right;
rowHeight = 0;
}
rowWidth += getHgap() + size.width;
rowHeight = Math.max(rowHeight, size.height);
start = false;
}
}
height += getVgap() + rowHeight;
width = Math.max(width, rowWidth);
if (!isVisible) {
return super.preferredLayoutSize(target);
}
else {
return new Dimension(width, height);
}
}
}
@Override
public Dimension minimumLayoutSize(Container target) {
if (getAlignOnBaseline()) return super.minimumLayoutSize(target);
return getWrappedSize(target);
}
}