com.sun.glass.ui.accessible.win.WinAccessibleRangeValueProvider Maven / Gradle / Ivy
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.glass.ui.accessible.win;
import com.sun.javafx.accessible.providers.RangeValueProvider;
import com.sun.javafx.accessible.utils.PatternIds;
/**
*
* @author paru
*/
public final class WinAccessibleRangeValueProvider extends WinAccessibleBasePatternProvider {
/**
* A class static block that initializes the JNI method IDs.
*/
static {
_initIDs();
}
native private static void _initIDs();
native protected long _createAccessible(long nativeBaseProvider);
native private void _destroyAccessible(long nativeAccessible);
private long nativeAccessible; // The native accessible
private double storeValue = -1; // TODO: add description
private double smallChange = -1; // TODO: add description
/**
* Downcall to create the native accessible. This will be used when firing
* events or when destroying the native accessible.
*
* @param node the related FX node object.
* @param provider the base provider which this pattern provider is chained to.
*/
public WinAccessibleRangeValueProvider(Object node, WinAccessibleBaseProvider provider) {
super(node);
nativeAccessible = _createAccessible(provider.getNativeAccessible());
}
/**
* Get the native accessible
*
* @return the native accessible
*/
@Override
long getNativeAccessible() {
return nativeAccessible;
}
// Downcalls
/**
* Destroy the native accessible
*
*/
@Override
public void destroyAccessible() {
_destroyAccessible(nativeAccessible);
}
////////////////////////////////////
//
// Start of upcalls from native code
//
////////////////////////////////////
// Note:
// These upcalls are from a native UIA implementation. This code translates
// the upcalls to the UIA-like implementation used in the JavaFX accessibility
// implementation.
/**
* Get the value
*
* @return the value
*/
private double getValue() {
if (storeValue == -1) {
storeValue = ((RangeValueProvider)node).getValue();
}
double currentValue = ((RangeValueProvider)node).getValue();
smallChange = Math.abs(storeValue - currentValue);
return ((RangeValueProvider)node).getValue();
}
/**
* Set the value
*/
private void setValue() {
// do nothing: not sure we want to setValue on the slider?
}
/**
* Get the Minimum value
*
* @return the minimum value
*/
private double getMinimum() {
return ((RangeValueProvider)node).getMinimum();
}
/**
* Get the Maximum value
*
* @return the maximum value
*/
private double getMaximum() {
return ((RangeValueProvider)node).getMaximum();
}
/**
* Determine if the control's value is read only
*
* @return whether or not the control's value is read only
*/
private boolean getIsReadOnly() {
return ((RangeValueProvider)node).isReadOnly();
}
/**
* TODO: Add Description
*
* @return TODO: Add description
*/
private double getSmallChange() {
return smallChange;
}
// TODO: Add getLargeChange?
/**
* Return the ID of the pattern supported by this class
*/
@Override
public int getPatternId() {
return PatternIds.RANGE_VALUE;
}
//////////////////////////////////
//
// End of upcalls from native code
//
//////////////////////////////////
}