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/*******************************************************************************
* Copyright (c) 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.pde.internal.ui.shared.target;
import org.eclipse.core.runtime.*;
import org.eclipse.core.runtime.preferences.*;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;
import org.eclipse.jface.action.*;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.pde.core.target.ITargetDefinition;
import org.eclipse.pde.core.target.ITargetHandle;
import org.eclipse.pde.internal.core.*;
import org.eclipse.pde.internal.core.target.TargetPlatformService;
import org.eclipse.pde.internal.ui.*;
import org.eclipse.pde.internal.ui.preferences.TargetPlatformPreferencePage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.PreferencesUtil;
import org.eclipse.ui.internal.WorkbenchWindow;
import org.eclipse.ui.progress.UIJob;
import org.eclipse.ui.texteditor.StatusLineContributionItem;
/**
* Contributes a status control displaying information on the current target platform,
* similar to HeapStatus.
*
* @since 4.4 Luna
*/
public class TargetStatus {
private static final String TARGET_STATUS_ID = "targetStatus"; //$NON-NLS-1$
private static StatusLineContributionItem targetStatus;
/**
* The status line contribution that displays the current target platform. Uses the
* text editor's contribution item to keep the same look and feel.
*/
private static class TargetStatusLineContributionItem extends StatusLineContributionItem {
public TargetStatusLineContributionItem() {
super(TARGET_STATUS_ID, true, 22);
PDEPlugin.getDefault().getLabelProvider().connect(this); // Needed to avoid disposing the image early
setImage(PDEPlugin.getDefault().getLabelProvider().get(PDEPluginImages.DESC_TARGET_DEFINITION));
update();
setActionHandler(new Action() {
@Override
public void run() {
PreferenceDialog dialog = PreferencesUtil.createPreferenceDialogOn(PDEPlugin.getActiveWorkbenchShell(), TargetPlatformPreferencePage.PAGE_ID, null, null);
dialog.open();
}
});
IEclipsePreferences node = InstanceScope.INSTANCE.getNode(PDECore.PLUGIN_ID);
node.addPreferenceChangeListener(prefListener);
}
/* (non-Javadoc)
* @see org.eclipse.jface.action.ContributionItem#dispose()
*/
@Override
public void dispose() {
PDEPlugin.getDefault().getLabelProvider().disconnect(this);
super.dispose();
IEclipsePreferences node = InstanceScope.INSTANCE.getNode(PDECore.PLUGIN_ID);
node.removePreferenceChangeListener(prefListener);
}
/* (non-Javadoc)
* @see org.eclipse.jface.action.ContributionItem#update()
*/
@Override
public void update() {
String result = Messages.TargetStatus_TargetStatusDefaultString;
try {
ITargetHandle handle = TargetPlatformService.getDefault().getWorkspaceTargetHandle();
if (handle != null) {
ITargetDefinition target = handle.getTargetDefinition();
String name = target.getName();
if (name != null && name.length() > 0) {
result = name;
}
}
} catch (CoreException e) {
PDEPlugin.log(e);
}
final String newValue = result;
UIJob job = new UIJob("") { //$NON-NLS-1$
@Override
public IStatus runInUIThread(IProgressMonitor monitor) {
targetStatus.setText(newValue);
setToolTipText(newValue);
return Status.OK_STATUS;
}
};
job.setSystem(true);
job.schedule();
}
private final IPreferenceChangeListener prefListener = new IPreferenceChangeListener() {
public void preferenceChange(PreferenceChangeEvent event) {
if (ICoreConstants.WORKSPACE_TARGET_HANDLE.equals(event.getKey())) {
update();
}
}
};
}
/**
* @return the existing target status contribution item or a new instance if one hasn't been created
*/
private static StatusLineContributionItem getContributionItem() {
if (targetStatus == null) {
targetStatus = new TargetStatusLineContributionItem();
}
return targetStatus;
}
/**
* Adds or removes the target status contribution from the status line manager depending on the
* value of preference {@link IPreferenceConstants#SHOW_TARGET_STATUS}.
*/
public static void refreshTargetStatus() {
PDEPreferencesManager prefs = PDEPlugin.getDefault().getPreferenceManager();
boolean showStatus = prefs.getBoolean(IPreferenceConstants.SHOW_TARGET_STATUS);
IWorkbenchWindow[] windows = PlatformUI.getWorkbench().getWorkbenchWindows();
for (int i = 0; i < windows.length; i++) {
IWorkbenchWindow window = windows[i];
// We are not in a view or editor so this is the only practical way of getting the status line manager at this time
if (window instanceof WorkbenchWindow) {
IStatusLineManager manager = ((WorkbenchWindow) window).getStatusLineManager();
if (manager != null) {
if (showStatus) {
manager.appendToGroup(StatusLineManager.BEGIN_GROUP, getContributionItem());
} else {
manager.remove(TARGET_STATUS_ID);
}
manager.update(true);
break;
}
}
}
}
}
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