/*
* JustifiedHorizontalFieldManager.java
*
* Copyright � 1998-2011 Research In Motion Limited
*
* 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.
*
* Note: For the sake of simplicity, this sample application may not leverage
* resource bundles and resource strings. However, it is STRONGLY recommended
* that application developers make use of the localization features available
* within the BlackBerry development platform to ensure a seamless application
* experience across a variety of languages and geographies. For more information
* on localizing your application, please refer to the BlackBerry Java Development
* Environment Development Guide associated with this release.
*/
package com.rim.samples.device.ui.wireframelayoutdemo;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.Manager;
/**
* A Manager class which divides its available width between two fields
*/
public class JustifiedHorizontalFieldManager extends Manager {
private final Field _leftField;
private final Field _rightField;
private final boolean _giveLeftFieldPriority;
/**
* Creates a new JustifiedHorizontalFieldManager
*
* @param leftField
* Field to be positioned on the left
* @param rightField
* Field to be positioned on the right
* @param giveLeftFieldPriority
* True is the left field is to be given all of its preferred
* width, false otherwise
*/
public JustifiedHorizontalFieldManager(final Field leftField,
final Field rightField, final boolean giveLeftFieldPriority) {
super(USE_ALL_WIDTH);
_leftField = leftField;
_rightField = rightField;
add(_leftField);
add(_rightField);
_giveLeftFieldPriority = giveLeftFieldPriority;
}
/**
* @see Manager#sublayout(int, int)
*/
protected void sublayout(int width, int height) {
Field firstField;
Field secondField;
if (_giveLeftFieldPriority) {
firstField = _leftField;
secondField = _rightField;
} else {
firstField = _rightField;
secondField = _leftField;
}
int maxHeight = 0;
final int leftFieldLeftMargin = _leftField.getMarginLeft();
final int leftFieldRightMargin = _leftField.getMarginRight();
final int rightFieldLeftMargin = _rightField.getMarginLeft();
final int rightFieldRightMargin = _rightField.getMarginRight();
final int firstFieldMarginBottom = firstField.getMarginBottom();
final int firstFieldMarginTop = firstField.getMarginTop();
final int secondFieldMarginBottom = secondField.getMarginBottom();
final int secondFieldMarginTop = secondField.getMarginTop();
int availableWidth = width;
availableWidth -= leftFieldLeftMargin;
availableWidth -= Math.max(leftFieldRightMargin, rightFieldLeftMargin);
availableWidth -= rightFieldRightMargin;
layoutChild(firstField, availableWidth, height - firstFieldMarginTop
- firstFieldMarginBottom);
maxHeight =
Math.max(maxHeight, firstFieldMarginTop
+ firstField.getHeight() + firstFieldMarginBottom);
availableWidth -= firstField.getWidth();
layoutChild(secondField, availableWidth, height - secondFieldMarginTop
- secondFieldMarginBottom);
maxHeight =
Math.max(maxHeight, secondFieldMarginTop
+ secondField.getHeight() + secondFieldMarginBottom);
availableWidth -= secondField.getWidth();
if (!isStyle(Field.USE_ALL_HEIGHT)) {
height = maxHeight;
}
if (!isStyle(Field.USE_ALL_WIDTH)) {
width -= availableWidth;
}
setPositionChild(_leftField, leftFieldLeftMargin, 0);
setPositionChild(_rightField, width - _rightField.getWidth()
- rightFieldRightMargin, 0);
setExtent(width, height);
}
}