/*
* Copyright (c) 2010, grossmann
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the jo-widgets.org nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
package org.jowidgets.impl.command;
import org.jowidgets.api.command.ActionStyle;
import org.jowidgets.api.command.IAction;
import org.jowidgets.api.command.IActionChangeListener;
import org.jowidgets.common.image.IImageConstant;
import org.jowidgets.util.EmptyCheck;
public class ActionWidgetSync {
private final IAction action;
private final IActionWidget actionWidget;
private final IActionChangeListener actionChangeListener;
private final ActionStyle style;
private boolean active;
private boolean textDirty;
private boolean toolTipTextDirty;
private boolean iconDirty;
private boolean enabledDirty;
private boolean currentEnabled;
private boolean disposed;
public ActionWidgetSync(final IAction action, final IActionWidget actionWidget) {
this(action, ActionStyle.COMPLETE, actionWidget);
}
public ActionWidgetSync(final IAction action, final ActionStyle style, final IActionWidget actionWidget) {
super();
this.active = false;
this.disposed = false;
this.textDirty = true;
this.toolTipTextDirty = true;
this.iconDirty = true;
this.enabledDirty = true;
this.action = action;
this.style = style;
this.actionWidget = actionWidget;
this.actionChangeListener = new ActionChangeListener();
//set text immediately to avoid that menu has wrong size when opened
//set text should not be expensive normally
setText(action.getText());
if (action.getActionChangeObservable() != null) {
action.getActionChangeObservable().addActionChangeListener(actionChangeListener);
}
//enable the item to ensure that accelerators works. Item maybe enabled.
actionWidget.setEnabled(true);
currentEnabled = true;
}
public void setActive(final boolean active) {
if (active) {
this.active = true;
if (enabledDirty) {
setEnabled(action.isEnabled());
}
if (iconDirty) {
setIcon(action.getIcon());
}
if (textDirty) {
setText(action.getText());
}
if (toolTipTextDirty) {
setTooltipText(action.getToolTipText());
}
}
else {
this.active = false;
}
}
public void dispose() {
this.disposed = true;
if (action.getActionChangeObservable() != null) {
action.getActionChangeObservable().removeActionChangeListener(actionChangeListener);
}
}
private void setText(final String text) {
if (style == ActionStyle.COMPLETE || action.getIcon() == null) {
actionWidget.setText(text);
}
else {
actionWidget.setToolTipText(text);
}
textDirty = false;
}
private void setIcon(final IImageConstant icon) {
actionWidget.setIcon(icon);
iconDirty = false;
}
private void setEnabled(final boolean enabled) {
actionWidget.setEnabled(enabled);
enabledDirty = false;
currentEnabled = enabled;
}
private void setTooltipText(final String tooltipText) {
if (style == ActionStyle.OMIT_TEXT && action.getIcon() != null) {
if (!EmptyCheck.isEmpty(tooltipText) && !EmptyCheck.isEmpty(action.getText())) {
actionWidget.setToolTipText(action.getText() + ": " + tooltipText);
}
else if (!EmptyCheck.isEmpty(tooltipText)) {
actionWidget.setToolTipText(tooltipText);
}
else if (!EmptyCheck.isEmpty(action.getText())) {
actionWidget.setToolTipText(action.getText());
}
else {
actionWidget.setToolTipText(null);
}
}
else {
actionWidget.setToolTipText(tooltipText);
}
toolTipTextDirty = false;
}
private class ActionChangeListener implements IActionChangeListener {
@Override
public void textChanged() {
if (disposed) {
return;
}
if (active) {
setText(action.getText());
}
else {
textDirty = true;
}
}
@Override
public void toolTipTextChanged() {
if (disposed) {
return;
}
if (active) {
setTooltipText(action.getToolTipText());
}
else {
toolTipTextDirty = true;
}
}
@Override
public void iconChanged() {
if (disposed) {
return;
}
if (active) {
setIcon(action.getIcon());
}
else {
iconDirty = true;
}
}
@Override
public void enabledChanged() {
if (disposed) {
return;
}
if (active) {
setEnabled(action.isEnabled());
}
else {
if (!currentEnabled) {
//enable the item to ensure that accelerators works. Item maybe enabled.
actionWidget.setEnabled(true);
currentEnabled = true;
}
enabledDirty = true;
}
}
}
}