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/*
* This file is part of the Echo Web Application Framework (hereinafter "Echo").
* Copyright (C) 2002-2009 NextApp, Inc.
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*/
package nextapp.echo.app;
import java.io.Serializable;
/**
* A property which describes an "inset" within a rectangular
* region. This property is commonly used to specify margins of a
* Component relative to its container.
* Null values for top/left/right/bottom margins indicate a 0-pixel inset
* for that margin.
*/
public class Insets
implements Serializable {
/** Serial Version UID. */
private static final long serialVersionUID = 20070101L;
private Extent top;
private Extent bottom;
private Extent left;
private Extent right;
/**
* Creates a new Insets object with the given pixel margin sizes.
*
* @param leftPx the size of the left margin in pixels
* @param topPx the size of the top margin in pixels
* @param rightPx the size of the right margin in pixels
* @param bottomPx the size of the bottom margin in pixels
*/
public Insets(int leftPx, int topPx, int rightPx, int bottomPx) {
super();
this.left = leftPx == 0 ? null : new Extent(leftPx, Extent.PX);
this.top = topPx == 0 ? null : new Extent(topPx, Extent.PX);
this.right = rightPx == 0 ? null : new Extent(rightPx, Extent.PX);
this.bottom = bottomPx == 0 ? null : new Extent(bottomPx, Extent.PX);
}
/**
* Creates a new Insets object with the given margin sizes.
* Insets only supports Extents with
* fixed (i.e., not percent) units.
*
* @param left the size of the left margin
* @param top the size of the top margin
* @param right the size of the right margin
* @param bottom the size of the bottom margin
*/
public Insets(Extent left, Extent top, Extent right, Extent bottom) {
super();
this.left = left;
this.top = top;
this.right = right;
this.bottom = bottom;
}
/**
* Creates a new Insets object, defining all margins to be the provided
* value.
*
* @param sizePx the margin size in pixels
*/
public Insets(int sizePx) {
this(new Extent(sizePx, Extent.PX));
}
/**
* Creates a new Insets object, defining all margins to be the provided
* value.
* Insets only supports Extents with
* fixed (i.e., not percent) units.
*
* @param size the margin size
*/
public Insets(Extent size) {
this(size, size, size, size);
}
/**
* Creates a new Insets object by defining values for the horizontal and
* vertical margins.
*
* @param horizontal the size of the horizontal (left and right) margins in pixels
* @param vertical the size of the vertical (top and bottom) margins in pixels
*/
public Insets(int horizontal, int vertical) {
this(new Extent(horizontal, Extent.PX), new Extent(vertical, Extent.PX));
}
/**
* Creates a new Insets object by defining values for the horizontal and
* vertical margins.
*
* @param horizontal the size of the horizontal (left and right) margins
* @param vertical the size of the vertical (top and bottom) margins
*/
public Insets(Extent horizontal, Extent vertical) {
this(horizontal, vertical, horizontal, vertical);
}
/**
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object o) {
if (!(o instanceof Insets)) {
return false;
}
Insets that = (Insets) o;
if (this.left != that.left && (this.left == null || !this.left.equals(that.left))) {
return false;
}
if (this.top != that.top && (this.top == null || !this.top.equals(that.top))) {
return false;
}
if (this.right != that.right && (this.right == null || !this.right.equals(that.right))) {
return false;
}
if (this.bottom != that.bottom && (this.bottom == null || !this.bottom.equals(that.bottom))) {
return false;
}
return true;
}
/**
* Returns the size of the bottom margin.
* Insets only supports Extents with
* fixed (i.e., not percent) units.
*
* @return the size of the bottom margin
*/
public Extent getBottom() {
return bottom;
}
/**
* Returns the size of the left margin.
* Insets only supports Extents with
* fixed (i.e., not percent) units.
*
* @return the size of the left margin
*/
public Extent getLeft() {
return left;
}
/**
* Returns the size of the right margin.
* Insets only supports Extents with
* fixed (i.e., not percent) units.
*
* @return the size of the right margin
*/
public Extent getRight() {
return right;
}
/**
* Returns the size of the top margin.
* Insets only supports Extents with
* fixed (i.e., not percent) units.
*
* @return the size of the top margin
*/
public Extent getTop() {
return top;
}
}
